Postoperative analgesia after major spine surgery: patient-controlled epidural analgesia versus patient-controlled intravenous analgesia.

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Schenk, Michael R; Putzier, Michael; Kügler, Bjoern; Tohtz, Stephan; Voigt, Kristina; Schink, Tania; Kox, Wolfgang J; Spies, Claudia; Volk, Thomas

2006-11-01

Spinal fusion surgery causes severe postoperative pain, hampering reconvalescense. We investigated the efficacy of patient-controlled epidural analgesia (PCEA) in a prospective, double-blind, randomized, controlled comparison with patient-controlled IV analgesia (PCIA). After lumbar anterior-posterior fusion receiving an epidural catheter intraoperatively, 72 patients were given either PCEA (ropivacaine 0.125% and sufentanil 1.0 microg/mL at 14 mL/h; bolus: 5 mL; lockout time: 15 min) and IV placebo or PCIA (morphine 2.0 mg/mL; bolus: 3 mg; lockout time: 15 min) and epidural placebo. Pain levels (visual analog scale 0-10), functional capabilities (turning in bed, standing, and walking), analgesic consumption, and side effects were evaluated until 72 h after surgery. Fourteen patients were excluded by predetermined criteria, leaving 58 patients for data analysis. Pain levels at rest and during mobilization were significantly lower in the PCEA when compared with that in the PCIA group throughout the study period (P turn in bed was achieved earlier in the PCEA group (P Patients in the PCEA group were significantly more satisfied with pain therapy (P patient satisfaction when compared with PCIA after spinal fusion surgery.

A randomized, double-blind, placebo-controlled trial on the role of preemptive analgesia with acetaminophen [paracetamol] in reducing headache following electroconvulsive therapy [ECT].

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Isuru, Amila; Rodrigo, Asiri; Wijesinghe, Chamara; Ediriweera, Dileepa; Premadasa, Shan; Wijesekara, Carmel; Kuruppuarachchi, Lalith

2017-07-28

Electroconvulsive therapy (ECT) is a safe and efficient treatment for several severe psychiatric disorders, but its use is limited by side effects. Post-ECT headache is one of the commonest side effects. Preemptive analgesia is effective in post-surgical pain management. The most commonly used analgesic is acetaminophen (paracetamol). However, acetaminophen as a preemptive analgesic for post-ECT headache has not been studied adequately. This study was conducted to compare the incidence and severity of post-ECT headache in patients who were administered acetaminophen pre-ECT with a placebo group. This study was a randomised, double-blind, placebo-controlled trial. Sixty-three patients received 1 g acetaminophen and 63 patients received a placebo identical to acetaminophen. The incidence and severity of headache 2 h before and after ECT were compared between placebo and acetaminophen groups. The severity was measured using a visual analog scale. Generalised linear models were used to evaluate variables associated with post ECT headache. Demographic and clinical variables of placebo and acetaminophen groups were comparable except for the energy level used to induce a seizure. Higher proportion of the placebo group (71.4%) experienced post-ECT headache when compared to the acetaminophen group (p < 0.001). The median pain score for headache was 0 (Inter quartile range: 0-2) in acetaminophen group whereas the score was 2 (IQR: 0-4) in placebo group (P < 0.001). Model fitting showed that the administration of acetaminophen is associated with less post-ECT headache (odds ratio = 0.23, 95% CI: 0.11-0.48, P < 0.001). A significant reduction was seen in both the incidence and severity of post-ECT headache with preemptive analgesia with acetaminophen. Ethical approval was granted by an Ethic review committee, University of Kelaniya, Sri Lanka (P/166/10/2015) and the trial was registered in the Sri Lanka Clinical Trials Registry ( SLCTR/2015/27 ).

Placebo-like analgesia via response imagery

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Peerdeman, K.J.; Laarhoven, A.I.M. van; Bartels, D.J.P.; Peters, M.L.; Evers, A.W.M.

2017-01-01

BACKGROUND: Placebo effects on pain are reliably observed in the literature. A core mechanism of these effects is response expectancies. Response expectancies can be formed by instructions, prior experiences and observation of others. Whether mental imagery of a response can also induce placebo-like

Low-dose ketamine infusion for labor analgesia: A double-blind, randomized, placebo controlled clinical trial

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Sam Joel

2014-01-01

Full Text Available Background: Most primary and secondary level hospitals in developing countries provide inadequate labor analgesia due to various medical, technical and economic reasons. This clinical trial was an effort to study the efficacy, safety and feasibility of intravenous (IV ketamine to provide labor analgesia. Materials and Methods: A total of 70 parturients were consented and randomly assigned to receive either IV ketamine or 0.9% saline. A loading dose of ketamine (0.2 mg/kg was followed-by an infusion (0.2 mg/kg/h until the delivery of the neonate. Similar volume of saline was infused in the placebo-group. Intramuscular meperidine was the rescue analgesic in both groups. The pain score, hemodynamic parameters of mother and fetus and the anticipated side-effects of ketamine were observed for. The newborn was assessed by the Neonatologist. Results: The pain score showed a decreasing trend in the ketamine group and after the 1 st h more than 60% of women in the ketamine group had pain relief, which was statistically significant. There was no significant clinical change in the maternal hemodynamics and fetal heart rate. However, 17 (48.5% of them had transient light headedness in the ketamine group. All the neonates were breast fed and the umbilical cord blood pH was between 7.1 and 7.2. The overall satisfaction was significantly high in the intervention group (P = 0.028. Conclusion: A low-dose ketamine infusion (loading dose of 0.2 mg/kg delivered over 30 min, followed-by an infusion at 0.2 mg/kg/h could provide acceptable analgesia during labor and delivery.

Lower Placebo Responses After Long-Term Exposure to Fibromyalgia Pain.

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Kosek, Eva; Rosen, Annelie; Carville, Serena; Choy, Ernest; Gracely, Richard H; Marcus, Hanke; Petzke, Frank; Ingvar, Martin; Jensen, Karin B

2017-07-01

Knowledge about placebo mechanisms in patients with chronic pain is scarce. Fibromyalgia syndrome (FM) is associated with dysfunctions of central pain inhibition, and because placebo analgesia entails activation of endogenous pain inhibition, we hypothesized that long-term exposure to FM pain would negatively affect placebo responses. In our study we examined the placebo group (n = 37, mean age 45 years) from a 12-week, randomized, double-blind, placebo-controlled trial investigating the effects of milnacipran or placebo. Twenty-two patients were classified as placebo nonresponders and 15 as responders, according to the Patient Global Impression of Change scale. Primary outcome was the change in pressure pain sensitivity from baseline to post-treatment. Secondary outcomes included ratings of clinical pain (visual analog scale), FM effect (Fibromyalgia Impact Questionnaire), and pain drawing. Among placebo responders, longer FM duration was associated with smaller reductions in pressure pain sensitivity (r = .689, P = .004), but not among nonresponders (r = -.348, P = .112). In our study we showed that FM duration influences endogenous pain regulation, because pain levels and placebo-induced analgesia were negatively affected. Our results point to the importance of early FM interventions, because endogenous pain regulation may still be harnessed at that early time. Also, placebo-controlled trials should take FM duration into consideration when interpreting results. This study presents a novel perspective on placebo analgesia, because placebo responses among patients with chronic pain were analyzed. Long-term exposure to fibromyalgia pain was associated with lower placebo analgesia, and the results show the importance of taking pain duration into account when interpreting the results from placebo-controlled trials. Copyright © 2017 The Authors. Published by Elsevier Inc. All rights reserved.

Etoricoxib - preemptive and postoperative analgesia (EPPA in patients with laparotomy or thoracotomy - design and protocols

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Hatz Rudolf

2010-05-01

Full Text Available Abstract Background and Objective Our objective was to report on the design and essentials of the Etoricoxib protocol- Preemptive and Postoperative Analgesia (EPPA Trial, investigating whether preemptive analgesia with cox-2 inhibitors is more efficacious than placebo in patients who receive either laparotomy or thoracotomy. Design and Methods The study is a 2 × 2 factorial armed, double blinded, bicentric, randomised placebo-controlled trial comparing (a etoricoxib and (b placebo in a pre- and postoperative setting. The total observation period is 6 months. According to a power analysis, 120 patients scheduled for abdominal or thoracic surgery will randomly be allocated to either the preemptive or the postoperative treatment group. These two groups are each divided into two arms. Preemptive group patients receive etoricoxib prior to surgery and either etoricoxib again or placebo postoperatively. Postoperative group patients receive placebo prior to surgery and either placebo again or etoricoxib after surgery (2 × 2 factorial study design. The Main Outcome Measure is the cumulative use of morphine within the first 48 hours after surgery (measured by patient controlled analgesia PCA. Secondary outcome parameters include a broad range of tests including sensoric perception and genetic polymorphisms. Discussion The results of this study will provide information on the analgesic effectiveness of etoricoxib in preemptive analgesia and will give hints on possible preventive effects of persistent pain. Trial registration NCT00716833

Acupuncture, psyche and the placebo response.

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Enck, Paul; Klosterhalfen, Sibylle; Zipfel, Stephan

2010-10-28

With growing use of acupuncture treatment in various clinical conditions, the question has been posed whether the reported effects reflect specific mechanisms of acupuncture or whether they represent placebo responses, as they often are similar in effect size and resemble similarities to placebo analgesia and its mechanisms. We reviewed the available literature for different placebos (sham procedures) used to control the acupuncture effects, for moderators and potential biases in respective clinical trials, and for central and peripheral mechanisms involved that would allow differentiation of placebo effects from acupuncture and sham acupuncture effects. While the evidence is still limited, it seems that biological differences exist between a placebo response, e.g. in placebo analgesia, and analgesic response during acupunture that does not occur with sham acupuncture. It seems advisable that clinical trials should include potential biomarkers of acupuncture, e.g. measures of the autonomic nervous system function to verify that acupuncture and sham acupuncture are different despite similar clinical effects. Copyright © 2010 Elsevier B.V. All rights reserved.

Placebo-suggestion modulates conflict resolution in the Stroop Task.

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Pedro A Magalhães De Saldanha da Gama

Full Text Available Here, we ask whether placebo-suggestion (without any form of hypnotic induction can modulate the resolution of cognitive conflict. Naïve participants performed a Stroop Task while wearing an EEG cap described as a "brain wave" machine. In Experiment 1, participants were made to believe that the EEG cap would either enhance or decrease their color perception and performance on the Stroop task. In Experiment 2, participants were explicitly asked to imagine that their color perception and performance would be enhanced or decreased (non-hypnotic imaginative suggestion. We observed effects of placebo-suggestion on Stroop interference on accuracy: interference was decreased with positive suggestion and increased with negative suggestion compared to baseline. Intra-individual variability was also increased under negative suggestion compared to baseline. Compliance with the instruction to imagine a modulation of performance, on the other hand, did not influence accuracy and only had a negative impact on response latencies and on intra-individual variability, especially in the congruent condition of the Stroop Task. Taken together, these results demonstrate that expectations induced by a placebo-suggestion can modulate our ability to resolve cognitive conflict, either facilitating or impairing response accuracy depending on the suggestion's contents. Our results also demonstrate a dissociation between placebo-suggestion and non-hypnotic imaginative suggestion.

Psychophysical testing of spatial and temporal dimensions of endogenous analgesia: conditioned pain modulation and offset analgesia.

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Honigman, Liat; Yarnitsky, David; Sprecher, Elliot; Weissman-Fogel, Irit

2013-08-01

The endogenous analgesia (EA) system is psychophysically evaluated using various paradigms, including conditioned pain modulation (CPM) and offset analgesia (OA) testing, respectively, the spatial and temporal filtering processes of noxious information. Though both paradigms assess the function of the EA system, it is still unknown whether they reflect the same aspects of EA and consequently whether they provide additive or equivalent data. Twenty-nine healthy volunteers (15 males) underwent 5 trials of different stimulation conditions in random order including: (1) the classic OA three-temperature stimulus train ('OA'); (2) a three-temperature stimulus train as control for the OA ('OAcon'); (3) a constant temperature stimulus ('constant'); (4) the classic parallel CPM ('CPM'); and (5) a combination of OA and CPM ('OA + CPM'). We found that in males, the pain reduction during the OA + CPM condition was greater than during the OA (P = 0.003) and CPM (P = 0.07) conditions. Furthermore, a correlation was found between OA and CPM (r = 0.62, P = 0.01) at the time of maximum OA effect. The additive effect found suggests that the two paradigms represent at least partially different aspects of EA. The moderate association between the CPM and OA magnitudes indicates, on the other hand, some commonality of their underlying mechanisms.

Specifying the non-specific components of acupuncture analgesia

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Vase, Lene; Baram, Sara; Takakura, Nobuari; Yajima, Hiroyoshi; Takayama, Miho; Kaptchuk, Ted J.; Schou, Søren; Jensen, Troels Staehelin; Zachariae, Robert; Svensson, Peter

2014-01-01

It is well known that acupuncture has pain-relieving effects, but the contribution of specific and especially non-specific factors to acupuncture analgesia is less clear. One hundred and one patients who developed pain ≥ 3 on a visual analog scale (VAS, 0-10) following third molar surgery were randomized to receive active acupuncture, placebo acupuncture, or no treatment for 30 min with acupuncture needles with potential for double-blinding. Patients’ perception of the treatment (active or placebo), and expected pain levels (VAS) were assessed prior to and halfway through the treatment. Looking at actual treatment allocation, there was no specific effect of active acupuncture (P = 0.240), but a large and significant non-specific effect of placebo acupuncture (P acupuncture (P acupuncture had significantly lower pain levels than those who believed they received placebo acupuncture. Expected pain levels accounted for significant and progressively larger amounts of the variance in pain ratings following both active and placebo acupuncture (up to 69.8%), This is the first study to show that under optimized blinding conditions non-specific factors such as patients’ perception of and expectations toward treatment are central to the efficacy of acupuncture analgesia and that these factors may contribute to self-reinforcing effects in acupuncture treatment To obtain an effect of acupuncture in clinical practice it may, therefore, be important to incorporate and optimize these factors. PMID:23707680

Functional MRI studies of acupuncture analgesia modulating within the human brain

International Nuclear Information System (INIS)

Hou Jinwen; Huang Weihao; Wang Qing; Feng Jingwei; Pu Yonglin; Gao Jiahong

2002-01-01

Objective: To evaluate the correlation between acupuncture analgesia and specific functional areas of the brain using functional magnetic resonance imaging (fMRI). Methods: Acupuncture stimulation was induced by manipulating acupuncture needle at the acupuncture point, large intestine 4 (LI 4, Hegu) on the right (dominant) hand of 8 healthy subjects. Functional MRI data were obtained from scanning the whole brain. A block-design paradigm was applied. Functional responses were established by students' group t-test analysis. Results: The data sets from 6 of 8 subjects were used in the study. Signal increases and signal decreases elicited by acupuncture stimulating were demonstrated in multiple brain regions. Signal increases in periaqueductal gray matter and ventral posterior nucleus of the left thalamus, and signal decreases in bilateral anterior cingulate cortex and bilateral occipital lobes were considered as the response to the acupuncture modulating within the human brain. Conclusion: The therapeutic effect of acupuncture analgesia was probably produced by the interaction of multiple brain structures of functional connectivity rather than through the activation of a single brain region

Modafinil reduces patient-reported tiredness after sedation/analgesia but does not improve patient psychomotor skills.

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Galvin, E; Boesjes, H; Hol, J; Ubben, J F; Klein, J; Verbrugge, S J C

2010-02-01

Early recovery of patients following sedation/analgesia and anesthesia is important in ambulatory practice. The aim of this study was to assess whether modafinil, used for the treatment of narcolepsy, improves recovery following sedation/analgesia. Patients scheduled for extracorporeal shock wave lithotripsy were randomly assigned to one of four groups. Two groups received a combination of fentanyl/midazolam with either modafinil or placebo. The remaining groups received remifentanil/propofol with either modafinil or placebo. Modafinil 200 mg was administered to the treatment group patients 1 h before sedation/analgesia. Groups were compared using the digital symbol substitution test (DSST), trail making test (TMT), observer scale of sedation and analgesia (OAA/S) and Aldrete score. Verbal rating scale (VRS) scores for secondary outcome variables e.g. energy, tiredness and dizziness were also recorded before and after treatment. Sixty-seven patients successfully completed the study. Groups received similar doses of sedation and analgesic drugs. No statistically significant difference was found for DSST between groups. No significant adverse effects occurred in relation to modafinil. No statistically significant difference between groups was identified for TMT, OAA/S and Aldrete scores. The mean VRS score for tiredness was lesser in the modafinil/fentanyl/midazolam group [1.3 (2.0)] compared with the placebo group [3.8 (2.5)], P=0.02. Such a difference was not found between the remifentanil/propofol groups [placebo 2.6 (2.2) vs. modafinil 3.1(2.7)], p>0.05. Dizziness was greater in the modafinil/remifentanil/propofol group 1.7 (2.0) vs. placebo 0.0 (0.5), ppsychomotor skills.

A blinded randomised placebo-controlled trial investigating the efficacy of morphine analgesia for procedural pain in infants: Trial protocol.

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Slater, Rebeccah; Hartley, Caroline; Moultrie, Fiona; Adams, Eleri; Juszczak, Ed; Rogers, Richard; Norman, Jane E; Patel, Chetan; Stanbury, Kayleigh; Hoskin, Amy; Green, Gabrielle

2016-11-15

Infant pain has both immediate and long-term negative consequences, yet in clinical practice it is often undertreated. To date, few pain-relieving drugs have been tested in infants. Morphine is a potent analgesic that provides effective pain relief in adults, but there is inconclusive evidence for its effectiveness in infants. The purpose of this study is to establish whether oral morphine provides effective analgesia for procedural pain in infants. A blinded, placebo-controlled, parallel-group randomized, phase II, clinical trial will be undertaken to determine whether morphine sulphate administered orally prior to clinically-required retinopathy of prematurity (ROP) screening and heel lancing provides effective analgesia. 
156 infants between 34 and 42 weeks' gestational age who require a clinical heel lance and ROP screening on the same test occasion will be included in the trial. Infants will be randomised to receive either a single dose of morphine sulphate (100 μg/kg) or placebo. Each infant will be monitored for 48 hours and safety data will be collected during the 24 hours following drug administration. The primary outcome will be the Premature Infant Pain Profile-revised (PIPP-R) score 30 seconds after ROP screening. The co-primary outcome will be the magnitude of nociceptive-specific brain activity evoked by a clinically-required heel lance. Infant clinical stability will be assessed by comparing the number of episodes of bradycardia, tachycardia, desaturation and apnoea, and changes in respiratory support requirements in the 24-hour periods before and after the clinical intervention. In addition, drug safety will be assessed by considering the occurrence of apnoeic and hypotensive episodes requiring intervention in the 24-hour period following drug administration. This study has been published as an Accepted Protocol Summary by The Lancet .

Building up analgesia in humans via the endogenous μ-opioid system by combining placebo and active tDCS: a preliminary report.

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Marcos F DosSantos

Full Text Available Transcranial Direct Current Stimulation (tDCS is a method of non-invasive brain stimulation that has been frequently used in experimental and clinical pain studies. However, the molecular mechanisms underlying tDCS-mediated pain control, and most important its placebo component, are not completely established. In this pilot study, we investigated in vivo the involvement of the endogenous μ-opioid system in the global tDCS-analgesia experience. Nine healthy volunteers went through positron emission tomography (PET scans with [11C]carfentanil, a selective μ-opioid receptor (MOR radiotracer, to measure the central MOR activity during tDCS in vivo (non-displaceable binding potential, BPND--one of the main analgesic mechanisms in the brain. Placebo and real anodal primary motor cortex (M1/2mA tDCS were delivered sequentially for 20 minutes each during the PET scan. The initial placebo tDCS phase induced a decrease in MOR BPND in the periaqueductal gray matter (PAG, precuneus, and thalamus, indicating activation of endogenous μ-opioid neurotransmission, even before the active tDCS. The subsequent real tDCS also induced MOR activation in the PAG and precuneus, which were positively correlated to the changes observed with placebo tDCS. Nonetheless, real tDCS had an additional MOR activation in the left prefrontal cortex. Although significant changes in the MOR BPND occurred with both placebo and real tDCS, significant analgesic effects, measured by improvements in the heat and cold pain thresholds, were only observed after real tDCS, not the placebo tDCS. This study gives preliminary evidence that the analgesic effects reported with M1-tDCS, can be in part related to the recruitment of the same endogenous MOR mechanisms induced by placebo, and that such effects can be purposely optimized by real tDCS.

Clinical evaluation of XaraColl®, a bupivacaine-collagen implant, for postoperative analgesia in two multicenter, randomized, double-blind, placebo-controlled pilot studies

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Cusack SL

2012-06-01

Full Text Available Susan L Cusack,1 Mark Jaros,2 Michael Kuss,3 Harold S Minkowitz,4 Peter Winkle,5 Lisa Hemsen61Cusack Pharmaceutical Consulting, Burlington, NJ, 2Summit Analytical, Denver, CO, USA; 3Premier Research Group, Austin, TX, USA; 4Memorial Hermann Memorial City Medical Center, Houston, TX, USA; 5Advanced Clinical Research Institute, Anaheim, CA, USA; 6Innocoll Technologies, Athlone, IrelandBackground: XaraColl®, a collagen-based implant that delivers bupivacaine to the site of surgical trauma, is under development for postoperative analgesia. Because of differing patient attitudes to postoperative pain control and the inability to assess baseline pain, standard clinical methods for evaluating analgesic efficacy are compromised and justify application of novel integrated approaches.Methods: We conducted two independent, multicenter, double-blind, placebo-controlled studies in men undergoing unilateral inguinal hernioplasty by open laparotomy to evaluate the safety and efficacy of XaraColl at different doses (100 mg and 200 mg of bupivacaine hydrochloride; study 1 and 2, respectively. Enrolled patients (50 in study 1 and 53 in study 2 were randomized to receive active or placebo implants in a 1:1 ratio. Postoperative pain intensity and use of supplementary opioid medication were recorded through 72 hours. Safety was assessed through 30 days. The principal efficacy variables were the summed pain intensity (SPI, total use of opioid analgesia (TOpA, and an integrated endpoint (I-SPI-TOpA. Each variable was analyzed at 24, 48, and 72 hours after implantation. A pooled analysis of both studies was also performed retrospectively.Results: Through 24 and 48 hours, XaraColl-treated patients experienced significantly less pain in study 1 (P < 0.001 and P = 0.012, respectively whereas they took significantly less opioid analgesia in study 2 (P = 0.004 and P = 0.042, respectively. Over the same time intervals in the pooled analysis, treated patients experienced

The Effect of EMLA Cream on Patient-Controlled Analgesia with Remifentanil in ESWL Procedure: A Placebo-Controlled Randomized Study.

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Acar, Arzu; Erhan, Elvan; Nuri Deniz, M; Ugur, Gulden

2013-01-01

To alleviate stinging pain in the skin entry area and visceral discomfort in patients who are undergoing ESWL. This study was designed to investigate the effectiveness of the EMLA cream in combination with remifentanil patient-controlled analgesia (PCA) in patients undergoing ESWL treatment. Sixty patients were divided into two double-blind randomized groups. Those in the first group were administered 3-5mm of EMLA 5% cream on a marked area; the second group received, as a placebo, a cream with no analgesic effect in the same amount. All patients were administered a remifentanil bolus with a PCA device. Arterial blood pressure, oxygen saturation, and respiratory rate were recorded throughout the procedure; postoperative side effects, agitation, and respiratory depression were measured after. Visual Analogue Scale (VAS) scores were taken preoperatively, perioperatively, directly postoperatively, and 60 minutes subsequent to finishing the procedure. There were no statistically significant differences in the frequency of PCA demands and delivered boluses or among perioperative VAS. No significant side effects were noted. Patient satisfaction was recorded high in both groups. EMLA cream offered no advantage over the placebo cream in patients undergoing ESWL with remifentanil PCA.

CHANGES IN SERUM LEVELS OF IL-6 IN THE EARLY POSTOPERATIVE PERIOD AFTER PREEMPTIVE ANALGESIA WITH NIMESULIDE, METAMIZOLE SODIUM AND PLACEBO IN REMOVAL OF IMPACTED MANDIBULAR THIRD MOLARS

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Deyan Zdravkov Neychev

2016-08-01

Full Text Available Abstract Objective: The objective of this study is to determine the change in IL-6 serum levels in patients undergoing preemptive analgesia and surgical removal of an impacted mandibular third molar. Study Design: This is a prospective, double-blind, placebo-controlled study in 80 patients who had an atypical extraction of an impacted mandibular third molar. Results: After surgical removal of impacted mandibular third molars, elevated levels of IL-6 in the early postoperative period were found, and the highest level was 14 pg/ml. Conclusion: Postoperative IL-6 levels rise regardless of the medication used for preemptive analgesia. In the group treated with nimesulide, a trend to reducing IL-6 levels was observed, but further study in a larger number of patients is needed.

Oral analgesia vs intravenous conscious sedation during Essure Micro-Insert sterilization procedure: randomized, double-blind, controlled trial.

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Thiel, John A; Lukwinski, Angelina; Kamencic, Huse; Lim, Hyung

2011-01-01

To compare the pain reported by patients during the Essure Micro-Insert sterilization procedure using either intravenous conscious sedation or oral analgesia. Randomized, double-blind, placebo-controlled trial (Canadian Task Force classification I). Tertiary care ambulatory women's clinic. Eighty women of reproductive age women requesting permanent sterilization. Hysteroscopic placement of the Essure Micro-Insert permanent birth control system. Patients undergoing placement of the Essure Micro-Insert system for permanent contraception were randomized to receive either intravenous conscious sedation, oral analgesia, or placebo. During the procedure, pain scores were recorded using a visual analog scale. Patients in the oral analgesia group reported slightly more pain during insertion of the hysteroscope and placement of the second micro-insert; the groups were otherwise equivalent. They were also equivalent when all visual analog scale scores were combined. Oral analgesia is an effective method of pain control during placement of the Essure Micro-Insert permanent birth control system. Copyright © 2011 AAGL. Published by Elsevier Inc. All rights reserved.

Mechanisms of the placebo response in pain in osteoarthritis.

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Abhishek, A; Doherty, M

2013-09-01

Administration of a placebo associates with symptomatic improvement in many conditions--the so-called placebo response. In this review we explain the concept of placebo response, examine the data that supports existence in osteoarthritis (OA), and discuss its possible mechanisms and determinants. A Pubmed literature search was carried out. Key articles were identified, and their findings discussed in a narrative review. Pain, stiffness, self-reported function and physician-global assessment in OA clearly improve in response to placebo. However, more objective measures such as quadriceps strength and radiographic progression appear less responsive. Although not directly studied in OA, contextual effects, patient expectation and conditioning are believed to be the main mechanisms. Neurotransmitter changes that mediate placebo-induced analgesia include increased endogenous opioid levels, increased dopamine levels, and reduced levels of cholecystokinin. Almost all parts of the brain involved in pain processing are influenced during placebo-induced analgesia. Determinants of the magnitude of placebo response include the patient-practitioner interaction, treatment response expectancy, knowledge of being treated, patient personality traits and placebo specific factors such as the route and frequency of administration, branding, and treatment costs. Clearer understanding of the neurobiology of placebo response validates its existence as a real phenomenon. Although routine administration of placebo for symptomatic improvement is difficult to justify, contextual factors that enhance treatment response should be employed in the management of chronic painful conditions such as OA where available treatments have only modest efficacy. Copyright © 2013 Osteoarthritis Research Society International. Published by Elsevier Ltd. All rights reserved.

Intraperitoneal And Incisional Bupivacaine Analgesia For Major Abdominal/Gynecologic Surgery: A Placebocontrolled

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R. Azarfarin

2006-05-01

Full Text Available Background:Postoperative pain is an important surgical problem. Recent studies in pain pathophysiology have led to the hypothesis that with perioperative administration of analgesics (pre-emptive analgesia it may be possible to prevent or reduce postoperative pain. This study was planned to investigate the efficacy of pre-emptive analgesia on postoperative pain after major gynecologic abdominal surgeries. Methods: In this prospective, double-blinded, randomized, and placebocontrolled trial, 60 ASA physical status I and II patients undergoing major abdominal gynecologic surgeries were randomized to receive 45 mL of bupivacaine 0.375% or 45mL of normal saline; 30 mL and 15 mL of the treatment solution was administered into the peritoneal cavity and incision, respectively, before wound closure. The pain score of the patients was evaluated by the visual analogue scale (VAS on awakening, and at 6, 12, and 24h after surgery. Time to first analgesia request and total analgesic requirements in the first 24h were recorded. Results: Pain scores were significantly higher in the placebo group than in the bupivacaine group on awakening (5.98±1.01 v.s 1.05±1.05; p<0.001, and at 6h after surgery (5.37±0.85 vs. 2.51±1.02; p<0.001. First request to analgesia was significantly longer in the bupivacaine patients than in the placebo group (5.87±3.04 h vs.1.35±0.36; p<0.001.Meperidine consumption over 24h was 96.00 ±17.53 mg in the placebo group compared with 23.28 ±14.89 mg in the bupivacaine patients (p<0.001.Conclusion:A combination of intraperitoneal and incisional bupivacaine infiltration at the end of abdominal gynecologic surgeries reduces postoperative pain on awakening and for 6 hours after surgery, and provides significant opioidsparing analgesia for 24 h after gynecologic abdominal surgeries.

Intravenous dexmedetomidine versus clonidine for prolongation of bupivacaine spinal anesthesia and analgesia: A randomized double-blind study

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Velayudha Sidda Reddy

2013-01-01

Full Text Available Background: Alpha 2 -adrenergic agonists have synergistic action with local anesthetics and may prolong the duration of sensory, motor blockade and postoperative analgesia obtained with spinal anesthesia. Aim: The objectives of this study are to compare and evaluate the efficacy of intravenous dexmedetomidine premedication with clonidine and placebo on spinal blockade duration, postoperative analgesia and sedation in patients undergoing surgery under bupivacaine intrathecal block. Materials and Methods: In this prospective, randomized, double-blind placebo-controlled study, 75 patients of the American Society of Anesthesiologists status I or II, scheduled for orthopedic lower limb surgery under spinal anesthesia, were randomly allocated into three groups of 25 each. Group DE received dexmedetomidine 0.5 μgkg−1 , group CL received clonidine 1.0 μgkg−1 and placebo group PL received 10 ml of normal saline intravenously before subarachnoid anesthesia with 15 mg of 0.5% hyperbaric bupivacaine. Onset time and regression times of sensory and motor blockade, the maximum upper level of sensory blockade were recorded. Duration of postoperative analgesia and sedation scores along with side effects were also recorded. Data was analyzed using analysis of variance or Chi-square test, and the value of P < 0.05 was considered statistically significant. Results: The sensory block level was higher with dexmedetomidine (T4 ± 1 than clonidine (T6 ± 1 or placebo (T6 ± 2. Dexmedetomidine also increased the time (243.35 ± 56.82 min to first postoperative analgesic request compared with clonidine (190.93 ± 42.38 min, P < 0.0001 and placebo (140.75 ± 28.52 min, P < 0.0001. The maximum Ramsay sedation score was greater in the dexmedetomidine group than other two groups (P < 0.0001. Conclusion: Premedication with intravenous dexmedetomidine is better than intravenous clonidine to provide intraoperative sedation and postoperative analgesia during bupivacaine

Intravenous dexmedetomidine versus clonidine for prolongation of bupivacaine spinal anesthesia and analgesia: A randomized double-blind study

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Reddy, Velayudha Sidda; Shaik, Nawaz Ahmed; Donthu, Balaji; Reddy Sannala, Venkata Krishna; Jangam, Venkatsiva

2013-01-01

Background: Alpha2-adrenergic agonists have synergistic action with local anesthetics and may prolong the duration of sensory, motor blockade and postoperative analgesia obtained with spinal anesthesia. Aim: The objectives of this study are to compare and evaluate the efficacy of intravenous dexmedetomidine premedication with clonidine and placebo on spinal blockade duration, postoperative analgesia and sedation in patients undergoing surgery under bupivacaine intrathecal block. Materials and Methods: In this prospective, randomized, double-blind placebo-controlled study, 75 patients of the American Society of Anesthesiologists status I or II, scheduled for orthopedic lower limb surgery under spinal anesthesia, were randomly allocated into three groups of 25 each. Group DE received dexmedetomidine 0.5 μgkg−1, group CL received clonidine 1.0 μgkg−1 and placebo group PL received 10 ml of normal saline intravenously before subarachnoid anesthesia with 15 mg of 0.5% hyperbaric bupivacaine. Onset time and regression times of sensory and motor blockade, the maximum upper level of sensory blockade were recorded. Duration of postoperative analgesia and sedation scores along with side effects were also recorded. Data was analyzed using analysis of variance or Chi-square test, and the value of P < 0.05 was considered statistically significant. Results: The sensory block level was higher with dexmedetomidine (T4 ± 1) than clonidine (T6 ± 1) or placebo (T6 ± 2). Dexmedetomidine also increased the time (243.35 ± 56.82 min) to first postoperative analgesic request compared with clonidine (190.93 ± 42.38 min, P < 0.0001) and placebo (140.75 ± 28.52 min, P < 0.0001). The maximum Ramsay sedation score was greater in the dexmedetomidine group than other two groups (P < 0.0001). Conclusion: Premedication with intravenous dexmedetomidine is better than intravenous clonidine to provide intraoperative sedation and postoperative analgesia during bupivacaine spinal anesthesia

Local infiltration analgesia in urogenital prolapse surgery: a prospective randomized, double-blind, placebo-controlled study

DEFF Research Database (Denmark)

Kristensen, Billy B; Rasmussen, Yvonne H; Agerlin, Marianne

2011-01-01

To evaluate the analgesic effect of high-volume infiltration analgesia in urogenital prolapse surgery and provide a detailed description of the infiltration technique.......To evaluate the analgesic effect of high-volume infiltration analgesia in urogenital prolapse surgery and provide a detailed description of the infiltration technique....

High-volume infiltration analgesia in bilateral hip arthroplasty

DEFF Research Database (Denmark)

Andersen, Lasse Ø; Otte, Niels Kristian Stahl; Husted, Henrik

2011-01-01

Background and purpose High-volume infiltration analgesia may be effective in postoperative pain management after hip arthroplasty but methodological problems prevent exact interpretation of previous studies. Methods In a randomized, double-blind placebo-controlled trial in 12 patients undergoing...... bilateral total hip arthroplasty (THA) in a fast-track setting, saline or high-volume (170 mL) ropivacaine (0.2%) with epinephrine (1:100,000) was administered to the wound intraoperatively along with supplementary postoperative injections via an intraarticular epidural catheter. Oral analgesia...... was instituted preoperatively with a multimodal regimen (gabapentin, celecoxib, and acetaminophen). Pain was assessed repeatedly for 48 hours postoperatively, at rest and with 45° hip flexion. Results Pain scores were low and similar between ropivacaine and saline administration. Median hospital stay was 4...

A placebo-controlled comparison of ketamine with pethidine for the ...

African Journals Online (AJOL)

Southern African Journal of Anaesthesia and Analgesia ... of ketamine when compared with pethidine and placebo for the prevention of postanaesthetic shivering. ... Pain was assessed and recorded by means of a visual analogue scale.

A blinded randomised placebo-controlled trial investigating the efficacy of morphine analgesia for procedural pain in infants: Trial protocol [version 1; referees: 2 approved

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Rebeccah Slater

2016-11-01

Full Text Available Infant pain has both immediate and long-term negative consequences, yet in clinical practice it is often undertreated. To date, few pain-relieving drugs have been tested in infants. Morphine is a potent analgesic that provides effective pain relief in adults, but there is inconclusive evidence for its effectiveness in infants. The purpose of this study is to establish whether oral morphine provides effective analgesia for procedural pain in infants.   A blinded, placebo-controlled, parallel-group randomized, phase II, clinical trial will be undertaken to determine whether morphine sulphate administered orally prior to clinically-required retinopathy of prematurity (ROP screening and heel lancing provides effective analgesia. 
156 infants between 34 and 42 weeks’ gestational age who require a clinical heel lance and ROP screening on the same test occasion will be included in the trial. Infants will be randomised to receive either a single dose of morphine sulphate (100 μg/kg or placebo. Each infant will be monitored for 48 hours and safety data will be collected during the 24 hours following drug administration.   The primary outcome will be the Premature Infant Pain Profile–revised (PIPP-R score 30 seconds after ROP screening. The co-primary outcome will be the magnitude of nociceptive-specific brain activity evoked by a clinically-required heel lance. Infant clinical stability will be assessed by comparing the number of episodes of bradycardia, tachycardia, desaturation and apnoea, and changes in respiratory support requirements in the 24-hour periods before and after the clinical intervention. In addition, drug safety will be assessed by considering the occurrence of apnoeic and hypotensive episodes requiring intervention in the 24-hour period following drug administration. This study has been published as an Accepted Protocol Summary by The Lancet.

Intraoperative local infiltration analgesia for early analgesia after total hip arthroplasty: a randomized, double-blind, placebo-controlled trial

DEFF Research Database (Denmark)

Lunn, Troels H; Husted, Henrik; Solgaard, Søren

2011-01-01

: High-volume local infiltration analgesia (LIA) is widely applied as part of a multimodal pain management strategy in total hip arthroplasty (THA). However, methodological problems hinder the exact interpretation of previous trials, and the evidence for LIA in THA remains to be clarified....... Therefore, we evaluated whether intraoperative high-volume LIA, in addition to a multimodal oral analgesic regimen, would further reduce acute postoperative pain after THA....

Placebos and painkillers: is mind as real as matter?

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Colloca, Luana; Benedetti, Fabrizio

2005-07-01

Considerable progress has been made in our understanding of the neurobiological mechanisms of the placebo effect, and most of our knowledge originates from the field of pain and analgesia. Today, the placebo effect represents a promising model that could allow us to shed new light on mind-body interactions. The mental events induced by placebo administration can activate mechanisms that are similar to those activated by drugs, which indicates a similarity between psychosocial and pharmacodynamic effects. These new neurobiological advances are already changing our conception of how clinical trials and medical practice must be viewed and conducted.

Preincisional analgesia with subcutaneous administration of tramadol reduces postoperative pain in patients after open urologic surgeries: a randomized, double-blind, placebo-controlled study

International Nuclear Information System (INIS)

Safavi, M.; Honarmand, A.; Ghaedi, F.

2012-01-01

Objective: Blockade of parietal nociceptive afferent nerves by wound infiltration with tramadol may be advantageous in the management of postoperative pain. The purpose of the present study was to assess the efficacy of preincisional subcutaneous administration of two doses of tramadol on postoperative pain relief after open urologic surgeries. Methodology: Ninety-six patients scheduled for open urologic surgeries were enrolled in this randomized, double-blind, placebo-controlled study. Patients were divided into three groups of 32 subjects each, and they received subcutaneous administrations of tramadol at 1 mg.kg/sup -1/ (Group T1) or 2 mg.kg/sup -1 (Group T2) or subcutaneous administrations of 10 mL of normal saline (Group C) before undergoing the surgeries. Visual analog scale (VAS) scores and analgesic use were monitored for 24 h after the operation. Results: VAS scores were significantly lower at 15, 30, and 60 min after arrival at the post anesthesia care unit in Group T2 compared with Group T1 and Group C (P < 0.05). Postoperative VAS scores were significantly lower at 4, 8, 16 and 24 h postoperatively in Group T2 compared with Group T1 and Group C. There were no significant differences between Group T1 and Group C on VAS scores at any time point. The time to first rescue analgesia in the postoperative period was significantly lower in Group T2 compared with Group T1 and Group C. The need for postoperative analgesia was significantly lower in Group T2 compared with Group T1 and Group C. Conclusion: Preincisional subcutaneous administration of tramadol at 2 mg.kg/sup -1/ provides effective analgesia during the first 24 hour after open urologic surgeries and does not produce significant side effects. (author)

Placebo-mediated, Naloxone-sensitive suggestibility of short-term memory performance.

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Stern, Jair; Candia, Victor; Porchet, Roseline I; Krummenacher, Peter; Folkers, Gerd; Schedlowski, Manfred; Ettlin, Dominik A; Schönbächler, Georg

2011-03-01

Physiological studies of placebo-mediated suggestion have been recently performed beyond their traditional clinical context of pain and analgesia. Various neurotransmitter systems and immunological modulators have been used in successful placebo suggestions, including Dopamine, Cholecystokinin and, most extensively, opioids. We adhered to an established conceptual framework of placebo research and used the μ-opioid-antagonist Naloxone to test the applicability of this framework within a cognitive domain (e.g. memory) in healthy volunteers. Healthy men (n=62, age 29, SD=9) were required to perform a task-battery, including standardized and custom-designed memory tasks, to test short-term recall and delayed recognition. Tasks were performed twice, before and after intravenous injection of either NaCl (0.9%) or Naloxone (both 0.15 mg/kg), in a double-blind setting. While one group was given neutral information (S-), the other was told that it might receive a drug with suspected memory-boosting properties (S+). Objective and subjective indexes of memory performance and salivary cortisol (as a stress marker) were recorded during both runs and differences between groups were assessed. Short-term memory recall, but not delayed recognition, was objectively increased after placebo-mediated suggestion in the NaCl-group. Naloxone specifically blocked the suggestion effect without interfering with memory performance. These results were not affected when changes in salivary cortisol levels were considered. No reaction time changes, recorded to uncover unspecific attentional impairment, were seen. Placebo-mediated suggestion produced a training-independent, objective and Naloxone-sensitive increase in memory performance. These results indicate an opioid-mediated placebo effect within a circumscribed cognitive domain in healthy volunteers. Copyright © 2011 Elsevier Inc. All rights reserved.

The Effect of the Type and Colour of Placebo Stimuli on Placebo Effects Induced by Observational Learning

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Świder, Karolina; Bąbel, Przemysław

2016-01-01

Research shows that placebo analgesia and nocebo hyperalgesia can be induced through observational learning. Our aim was to replicate and extend these results by studying the influence of the type and colour of stimuli used as placebos on the placebo effects induced by observational learning. Three experimental and two control groups were tested. All participants received pain stimuli of the same intensity preceded by colour lights (green and red) or geometric shapes (circles and squares). Before receiving pain stimuli, participants in the experimental groups, but not in the control groups, observed a model who rated pain stimuli that were preceded by either green lights (green placebo group), red lights (red placebo group), or circles (circle placebo group) as being less painful than those preceded by either red lights (green placebo group), green lights (red placebo group), or squares (circle placebo group). As a result participants in the experimental groups rated pain stimuli preceded by either green lights (green placebo group), red lights (red placebo group), or circles (circle placebo group) as being less painful than the participants in the control groups did, indicating that placebo effect was induced. No statistically significant differences were found in the magnitudes of the placebo effects between the three experimental groups (green placebo, red placebo, and circle placebo groups), indicating that neither the type nor the colour of placebo stimuli affected the placebo effects induced by observational learning. The placebo effects induced by observational learning were found to be unrelated to the individual differences in pain anxiety, fear of pain, and empathy. PMID:27362552

Effects of Multimodal Analgesia on the Success of Mouse Embryo Transfer Surgery

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Parker, John M.; Austin, Jamie; Wilkerson, James; Carbone, Larry

2011-01-01

Multimodal analgesia is promoted as the best practice pain management for invasive animal research procedures. Universal acceptance and incorporation of multimodal analgesia requires assessing potential effects on study outcome. The focus of this study was to assess effects on embryo survival after multimodal analgesia comprising an opioid and nonsteroidal antiinflammatory drug (NSAID) compared with opioid-only analgesia during embryo transfer procedures in transgenic mouse production. Mice were assigned to receive either carprofen (5 mg/kg) with buprenorphine (0.1 mg/kg; CB) or vehicle with buprenorphine (0.1 mg/kg; VB) in a prospective, double-blinded placebo controlled clinical trial. Data were analyzed in surgical sets of 1 to 3 female mice receiving embryos chimeric for a shared targeted embryonic stem-cell clone and host blastocyst cells. A total of 99 surgical sets were analyzed, comprising 199 Crl:CD1 female mice and their 996 offspring. Neither yield (pups weaned per embryo implanted in the surgical set) nor birth rate (average number of pups weaned per dam in the set) differed significantly between the CB and VB conditions. Multimodal opioid–NSAID analgesia appears to have no significant positive or negative effect on the success of producing novel lines of transgenic mice by blastocyst transfer. PMID:21838973

Postoperative analgesia using diclofenac and acetaminophen in children.

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Hannam, Jacqueline A; Anderson, Brian J; Mahadevan, Murali; Holford, Nick H G

2014-09-01

Diclofenac dosing in children for analgesia is currently extrapolated from adult data. Oral diclofenac 1.0 mg·kg(-1) is recommended for children aged 1-12 years. Analgesic effect from combination diclofenac/acetaminophen is unknown. Children (n = 151) undergoing tonsillectomy (c. 1995) were randomized to receive acetaminophen elixir 40 mg·kg(-1) before surgery and 20 mg·kg(-1) rectally at the end of surgery with diclofenac suspension 0.1 mg·kg(-1) , 0.5 mg·kg(-1) , or 2.0 mg·kg(-1) before surgery or placebo. A further 93 children were randomized to receive diclofenac 0.1 mg·kg(-1) , 0.5 mg·kg(-1) , or 2.0 mg·kg(-1) only. Postoperative pain was assessed (visual analogue score, VAS 0-10) at half-hourly intervals from waking until discharge. Data were pooled with those from a further 222 children and 30 adults. One-compartment models with first-order absorption and elimination described the pharmacokinetics of both medicines. Combined drug effects were described using a modified EMAX model with an interaction term. An interval-censored model described the hazard of study dropout. Analgesia onset had an equilibration half-time of 0.496 h for acetaminophen and 0.23 h for diclofenac. The maximum effect (EMAX ) was 4.9. The concentration resulting in 50% of EMAX (C50 ) was 1.23 mg·l(-1) for diclofenac and 13.3 mg·l(-1) for acetaminophen. A peak placebo effect of 6.8 occurred at 4 h. Drug effects were additive. The hazard of dropping out was related to pain (hazard ratio of 1.35 per unit change in pain). Diclofenac 1.0 mg·kg(-1) with acetaminophen 15 mg·kg(-1) achieves equivalent analgesia to acetaminophen 30 mg·kg(-1) . Combination therapy can be used to achieve similar analgesia with lower doses of both drugs. © 2014 John Wiley & Sons Ltd.

Information Models of Acupuncture Analgesia and Meridian Channels

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Chang Hua Zou

2010-12-01

Full Text Available Acupuncture and meridian channels have been major components of Chinese and Eastern Asian medicine—especially for analgesia—for over 2000 years. In recent decades, electroacupuncture (EA analgesia has been applied clinically and experimentally. However, there were controversial results between different treatment frequencies, or between the active and the placebo treatments; and the mechanisms of the treatments and the related meridian channels are still unknown. In this study, we propose a new term of infophysics therapy and develop information models of acupuncture (or EA analgesia and meridian channels, to understand the mechanisms and to explain the controversial results, based on Western theories of information, trigonometry and Fourier series, and physics, as well as published biomedical data. We are trying to build a bridge between Chinese medicine and Western medicine by investigating the Eastern acupuncture analgesia and meridian channels with Western sciences; we model the meridians as a physiological system that is mostly constructed with interstices in or between other physiological systems; we consider frequencies, amplitudes and wave numbers of electric field intensity (EFI as information data. Our modeling results demonstrate that information regulated with acupuncture (or EA is different from pain information, we provide answers to explain the controversial published results, and suggest that mechanisms of acupuncture (or EA analgesia could be mostly involved in information regulation of frequencies and amplitudes of EFI as well as neuronal transmitters such as endorphins.

Clonidine for sedation and analgesia for neonates receiving mechanical ventilation.

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Romantsik, Olga; Calevo, Maria Grazia; Norman, Elisabeth; Bruschettini, Matteo

2017-05-10

Although routine administration of pharmacologic sedation or analgesia during mechanical ventilation in preterm neonates is not recommended, its use in clinical practice remains common. Alpha-2 agonists, mainly clonidine and dexmedetomidine, are used as adjunctive (or alternative) sedative agents alongside opioids and benzodiazepines. Clonidine has not been systematically assessed for use in neonatal sedation during ventilation. To assess whether clonidine administered to term and preterm newborn infants receiving mechanical ventilation reduces morbidity and mortality rates. To compare the intervention versus placebo, no treatment, and dexmedetomidine; and to assess the safety of clonidine infusion for potential harms.To perform subgroup analyses according to gestational age; birth weight; administration method (infusion or bolus therapy); dose, duration, and route of clonidine administration; and pharmacologic sedation as a co-intervention. We used the standard search strategy of the Cochrane Neonatal Review Group to search the Cochrane Central Register of Controlled Trials (CENTRAL; 2016, Issue 12) in the Cochrane Library, MEDLINE via PubMed (1966 to January 10, 2017), Embase (1980 to January 10, 2017), and the Cumulative Index to Nursing and Allied Health Literature (CINAHL; 1982 to January 10, 2017). We also searched clinical trials databases, conference proceedings, and the reference lists of retrieved articles for randomized controlled trials and quasi-randomized trials. We searched for randomized controlled trials, quasi-randomized controlled trials, and cluster trials comparing clonidine versus placebo, no treatment, or dexmedetomidine administered to term and preterm newborns receiving mechanical ventilation via an endotracheal tube. For the included trial, two review authors independently extracted data (e.g. number of participants, birth weight, gestational age, all-cause death during initial hospitalization, duration of respiratory support, sedation

Reduced infant response to a routine care procedure after sucrose analgesia.

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Taddio, Anna; Shah, Vibhuti; Katz, Joel

2009-03-01

Sucrose has analgesic and calming effects in newborns. To date, it is not known whether the beneficial effects extend to caregiving procedures that are performed after painful procedures. Our objective was to determine the effect of sucrose analgesia for procedural pain on infant pain responses during a subsequent caregiving procedure. We conducted a double-blind, randomized, controlled trial. Healthy neonates within 2 strata (normal infants and infants of diabetic mothers) were randomly assigned to a sucrose or placebo water group before all needle procedures after birth. Pain response during a diaper change performed after venipuncture for the newborn screening test was determined by using a validated multidimensional measure, the Premature Infant Pain Profile. The study was conducted between September 15, 2003, and July 27, 2004. Altogether, 412 parents were approached; 263 consented. Twenty-three infants were not assigned, leaving 240 for participation (n = 120 per group), with an equal number in each infant strata. Of those, 186 (78%) completed the study. There were no significant differences in birth characteristics between groups. During diaper change, sucrose-treated infants had lower pain scores than placebo-treated infants. The relative risk of having pain, defined as a Premature Infant Pain Profile score of >/=6, was 0.64 with sucrose compared with placebo. This study demonstrates that when used to manage pain, sucrose reduces the pain response to a subsequent routine caregiving procedure. Therefore, the benefits of sucrose analgesia extend beyond the painful event to other aversive and potentially painful procedures.

Epidural analgesia during labor vs no analgesia: A comparative study

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Wesam Farid Mousa

2012-01-01

Full Text Available Background: Epidural analgesia is claimed to result in prolonged labor. Previous studies have assessed epidural analgesia vs systemic opioids rather than to parturients receiving no analgesia. This study aimed to evaluate the effect of epidural analgesia on labor duration compared with parturients devoid of analgesia. Methods: One hundred sixty nulliparous women in spontaneous labor at full term with a singleton vertex presentation were assigned to the study. Parturients who request epidural analgesia were allocated in the epidural group, whereas those not enthusiastic to labor analgesia were allocated in the control group. Epidural analgesia was provided with 20 mL bolus 0.5% epidural lidocaine plus fentanyl and maintained at 10 mL for 1 h. Duration of the first and second stages of labor, number of parturients receiving oxytocin, maximal oxytocin dose required for each parturient, numbers of instrumental vaginal, vacuum-assisted, and cesarean deliveries and neonatal Apgar score were recorded. Results: There was no statistical difference in the duration of the active-first and the second stages of labor, instrumental delivery, vacuum-assisted or cesarean delivery rates, the number of newborns with 1-min and 5-min Apgar scores less than 7 between both groups and number of parturients receiving oxytocin, however, the maximal oxytocin dose was significantly higher in the epidural group. Conclusion: Epidural analgesia by lidocaine (0.5% and fentanyl does not prolong labor compared with parturients without analgesia; however, significant oxytocin augmentation is required during the epidural analgesia to keep up the aforementioned average labor duration.

A blinded randomised placebo-controlled trial investigating the efficacy of morphine analgesia for procedural pain in infants: Trial protocol [version 2; referees: 2 approved, 1 approved with reservations

Directory of Open Access Journals (Sweden)

Rebeccah Slater

2017-01-01

Full Text Available Infant pain has both immediate and long-term negative consequences, yet in clinical practice it is often undertreated. To date, few pain-relieving drugs have been tested in infants. Morphine is a potent analgesic that provides effective pain relief in adults, but there is inconclusive evidence for its effectiveness in infants. The purpose of this study is to establish whether oral morphine provides effective analgesia for procedural pain in infants.   A blinded, placebo-controlled, parallel-group randomized, phase II, clinical trial will be undertaken to determine whether morphine sulphate administered orally prior to clinically-required retinopathy of prematurity (ROP screening and heel lancing provides effective analgesia. 
156 infants between 34 and 42 weeks’ gestational age who require a clinical heel lance and ROP screening on the same test occasion will be included in the trial. Infants will be randomised to receive either a single dose of morphine sulphate (100 μg/kg or placebo. Each infant will be monitored for 48 hours and safety data will be collected during the 24 hours following drug administration.   The primary outcome will be the Premature Infant Pain Profile–revised (PIPP-R score during the 30 second periods after ROP screening. The co-primary outcome will be the magnitude of nociceptive-specific brain activity evoked by a clinically-required heel lance. Infant clinical stability will be assessed by comparing the number of episodes of bradycardia, tachycardia, desaturation and apnoea, and changes in respiratory support requirements in the 24-hour periods before and after the clinical intervention. In addition, drug safety will be assessed by considering the occurrence of apnoeic and hypotensive episodes requiring intervention in the 24-hour period following drug administration. This study has been published as an Accepted Protocol Summary by The Lancet.

The addition of tramadol to the standard of i.v. acetaminophen and morphine infusion for postoperative analgesia in neonates offers no clinical benefit: a randomized placebo-controlled trial.

Science.gov (United States)

Olischar, Monika; Palmer, Greta M; Orsini, Francesca; Davidson, Andrew J; Perkins, Elizabeth J; Lee, Katherine J; Everest, Neil J; Cranswick, Noel E; Hunt, Rod W

2014-11-01

Tramadol is used following neonatal cardiac and general surgery. However, its ability to opioid-spare or facilitate earlier extubation in postoperative neonates is unquantified. This randomized placebo-controlled trial aimed to assess whether tramadol's addition to standard analgesia resulted in earlier extubation or reduced analgesic/sedative requirements in postsurgical neonates. Neonates born ≥32 weeks postmenstrual age received either tramadol [T] 2 mg·kg(-1) or placebo [P] 6-hourly for up to 5 days postthoracoabdominal surgery in addition to morphine (commenced at 20 mcg·kg(-1) ·h(-1)) and 6-hourly i.v. acetaminophen. Time to extubation, morphine and midazolam amounts, hourly pain scores, and seizure activity were compared using an intention-to-treat and per-protocol analysis. Seventy-one neonates participated. Median survival time to extubation was similar between the groups (T 67 h [95% CI 51, 84] vs P 52 h [95%CI 43, 65]; P = 0.4), and similar numbers were extubated by 96 h (T 69% vs P 77%; difference -8%, 95%CI -28, 13%). Morphine and midazolam exposure was similar, with low pain scores in both groups (mean percentage of time with a pain score >5/20 during the 5 days: T 13% vs P 11%, difference in means 2.8 [95% CI -1.8, 7.6], P = 0.20). Most participants had normal cranial ultrasounds (T 86% vs P 86%); no seizures occurred clinically or electroencephalographically. Tramadol's addition to standard analgesia in this small group of postsurgical neonates did not appear to have any positive effect on time to extubation, morphine or midazolam exposure, or pain scores. This questions the benefit of tramadol for postsurgical neonates. Importantly, no seizures occurred in these ill neonates who may potentially be at greater risk of tramadol toxicity compared with adults. © 2014 John Wiley & Sons Ltd.

Morphine- and buprenorphine-induced analgesia and antihyperalgesia in a human inflammatory pain model

DEFF Research Database (Denmark)

Ravn, Pernille; Secher, EL; Skram, U

2013-01-01

Opioid therapy is associated with the development of tolerance and paradoxically increased sensitivity to pain. It has been suggested that buprenorphine is associated with a higher antihyperalgesia/analgesia ratio than μ-opioid receptor agonists. The primary outcome of this study was therefore...... to investigate relative differences in antihyperalgesia and analgesia effects between morphine and buprenorphine in an inflammatory pain model in volunteers. The secondary outcome was to examine the relationship between pain sensitivity and opioid-induced effects on analgesia, antihyperalgesia, and descending...... pain modulation....

The efficacy of oblique subcostal transversus abdominis plane block in laparoscopic cholecystectomy - a prospective, placebo controlled study.

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Breazu, Caius Mihai; Ciobanu, Lidia; Hadade, Adina; Bartos, Adrian; Mitre, Călin; Mircea, Petru Adrian; Ionescu, Daniela

2016-04-01

Pain control after a laparoscopic cholecystectomy can represent a challenge, considering the side effects due to standard analgesia methods. Recently the transversus abdominis plane block (TAP Block) has been used as a part of multimodal analgesia with promising results. The subcostal approach (OSTAP Block), a variant on the TAP block, produces reliable unilateral supraumbilical analgesia. This study evaluated the efficacy of the OSTAP block with bupivacaine in laparoscopic cholecystectomy compared with the placebo OSTAP block. Sixty ASA I/II adult patients listed for elective laparoscopic cholecystectomy were randomly allocated in one of two groups: Group A (OSTAP placebo) received preoperatively bilateral OSTAP block with sterile normal saline and Group B (OSTAP bupivacaine) received bilateral preoperatively OSTAP block with the same volumes of 0.25% bupivacaine. Twenty-four hours postoperative opioid consumption, the dose of opioid required during surgery, opioid dose in the recovery unit (PACU) and PACU length of stay were evaluated. The quality of analgesia was assessed by the Visual Analogue Scale (VAS) at specific interval hours during 24 h, at rest and with movement. The mean intraoperative opioid consumption showed a significant difference between the two groups, (385 ± 72.52 mg in group A vs 173.67 ± 48.60 mg in group B, p consumption showed a statistically significant difference between groups (32 ± 26.05 mg vs 79 ± 16.68 mg, p < 0.001). PACU length of stay was significantly lower for group B patients compared with group A patients (20.67 ± 11.27 min vs 41.67 ± 12.41 min, p < 0.001). The OSTAP bupivacaine group had a statistically significant lower pain score than the OSTAP placebo group at 0, 2, 4, 6, 12, 24 h, both at rest and with movement. No signs or symptoms of local anaesthetic systemic toxicity or other complications were detected. OSTAP block with bupivacaine 0.25% can provide effective analgesia up to 24 hours after laparoscopic

Endogenous analgesic effect of pregabalin: A double-blind and randomized controlled trial.

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Sugimine, S; Saito, S; Araki, T; Yamamoto, K; Obata, H

2017-07-01

Conditioned pain modulation (CPM) is widely used to measure endogenous analgesia, and a recent study indicated that drugs that act on endogenous analgesia are more effective in individuals with lower CPM. Recent animal studies have indicated that pregabalin activates endogenous analgesia by stimulating the descending pain inhibitory system. The present study examined whether the analgesic effect of pregabalin is greater in individuals with lower original endogenous analgesia using CPM. Fifty-nine healthy subjects were randomly assigned to either a pregabalin group or a placebo group, and 50 of them completed the study. CPM was measured before and after pregabalin or placebo administration. The correlation of initial CPM to change in CPM was compared between the pregabalin and placebo groups. Initial CPM was significantly correlated with the change in CPM in the pregabalin group (r = -0.73, p CPM significantly affected the change in CPM in the pregabalin group but not in the placebo group (pregabalin group: adj R 2  = 0.51, p CPM) was stronger for subjects with lower original endogenous analgesia, suggesting that the mechanism of pregabalin involves the improvement of endogenous analgesia. © 2017 European Pain Federation - EFIC®.

Comparing the Effect of Adding Ketamine and Neostigmine to Bupivacaine 0.25 % for Epidural Analgesia among Patients Candidated for Elective Femoral Fracture Surgery

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Alireza Kamali

2016-11-01

Full Text Available Pain is a complex medical problem that its inadequate postoperative control has adverse effects on patients’ physiological, metabolic and mental status. Adding new supplements will lead to an increased duration of analgesia. The purpose of this study was to compare the addition of neostigmine and ketamine to bupivacaine 0.25% for epidural analgesia increasing duration of postoperative analgesia. In this double blind clinical trial, 90 patients over 50 years candidated for elective hip surgery with ASA class I, II were randomly divided to three groups: neostigmine, ketamine and control groups. All patients received epidural with bupivacaine 0.25% by 2cc/segment. Furthermore, 60 micrograms neostigmine was added in first group and 40 mg ketamine was used for group II. Level of postoperative pain based on VAS and duration of analgesia and amount of analgesic was determined and compared across the three groups. The mean of pain score at 6 and 12 hours after surgery was significantly lower in the ketamine group than the other groups and in neostigmine group was less than placebo (P ≤ 0.01. The mean of duration of postoperative analgesia in the ketamine group was significantly higher than the other groups and in neostigmine group was more than placebo (P ≤ 0.01. The mean dose of analgesic (pethedin was the least in the ketamine group (P ≤ 0.001. Neostigmine and ketamine with bupivacaine 0.25% for epidural anesthesia increased the duration of analgesia during the postoperative period and reduced analgesic consumption that about ketamine was more than neostigmine.

Importance of placebo effect in cough clinical trials.

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Eccles, Ron

2010-01-01

Cough is a unique symptom because, unlike sneeze and other symptoms, it can be under voluntary control and this complicates clinical trials on cough medicines. All over-the-counter cough medicines (OTC) are very effective treatments because of their placebo effect. The placebo effect is enhanced by expectancy related to advertising, brand, packaging, and formulation. This placebo effect creates a problem for the conduct of clinical trials on OTC cough medicines that attempt to demonstrate the efficacy of a pharmacological agent above that of any placebo effect. Up to 85% of the efficacy of some cough medicines can be attributed to a placebo effect. The placebo effect apparent in clinical trials consists of several components: natural recovery, regression of cough response toward mean, demulcent effect, effect of sweetness, voluntary control, and effects related to expectancy and meaning of the treatment. The placebo effect has been studied most in the pain model, and placebo analgesia is reported to depend on the activation of endogenous opioid systems in the brain; this model may be applicable to cough. A balanced placebo design may help to control for the placebo effect, but this trial design may not be acceptable due to deception of patients. The placebo effect in clinical trials may be controlled by use of a crossover design, where feasible, and the changes in the magnitude of the placebo effect in this study design are discussed.

Are all placebo effects equal? Placebo pills, sham acupuncture, cue conditioning and their association.

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Jian Kong

Full Text Available Placebo treatments and healing rituals have been used to treat pain throughout history. The present within-subject crossover study examines the variability in individual responses to placebo treatment with verbal suggestion and visual cue conditioning by investigating whether responses to different types of placebo treatment, as well as conditioning responses, correlate with one another. Secondarily, this study also examines whether responses to sham acupuncture correlate with responses to genuine acupuncture. Healthy subjects were recruited to participate in two sequential experiments. Experiment one is a five-session crossover study. In each session, subjects received one of four treatments: placebo pills (described as Tylenol, sham acupuncture, genuine acupuncture, or no treatment rest control condition. Before and after each treatment, paired with a verbal suggestion of positive effect, each subject's pain threshold, pain tolerance, and pain ratings to calibrated heat pain were measured. At least 14 days after completing experiment one, all subjects were invited to participate in experiment two, during which their analgesic responses to conditioned visual cues were tested. Forty-eight healthy subjects completed experiment one, and 45 completed experiment two. The results showed significantly different effects of genuine acupuncture, placebo pill and rest control on pain threshold. There was no significant association between placebo pills, sham acupuncture and cue conditioning effects, indicating that individuals may respond to unique healing rituals in different ways. This outcome suggests that placebo response may be a complex behavioral phenomenon that has properties that comprise a state, rather than a trait characteristic. This could explain the difficulty of detecting a signature for "placebo responders." However, a significant association was found between the genuine and sham acupuncture treatments, implying that the non

Analgesia peridural para o trabalho de parto e para o parto: efeitos da adição de um opióide Effects of the association of an opioid with epidural analgesia for labor and delivery

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José Guilherme Cecatti

1998-07-01

Full Text Available O objetivo deste estudo foi avaliar a eficácia e segurança da associação bupivacaína com sufentanil para a analgesia no trabalho de parto e do parto por meio de um bloqueio peridural contínuo. Realizou-se um ensaio clínico duplo-cego, prospectivo e aleatório, incluindo sessenta mulheres nulíparas da Maternidade do CAISM/UNICAMP. No momento da analgesia, as mulheres foram aleatoriamente alocadas em dois grupos: BS, recebendo 12,5 mg de bupivacaína com adrenalina mais 30 µg de sufentanil e BP, recebendo 12,5 mg de bupivacaína com adrenalina mais placebo. Foram avaliados os parâmetros relativos à qualidade e duração da analgesia, duração do trabalho de parto e também possíveis efeitos sobre o recém-nascido. Os resultados mostraram a superioridade da adição do sufentanil sobre o grau de analgesia durante o tempo de ação da primeira dose de anestésico local. Não houve aumento na duração do trabalho de parto depois do início da analgesia quando se compararam ambos os grupos, nem qualquer diferença quanto à via de parto. Não houve também diferenças entre os grupos com relação à avaliação dos recém-nascidos. Conclui-se que a associação de 30 µg de sufentanil à primeira dose de bupivacaína é segura e eficaz, melhorando a qualidade da analgesia, sua duração e não afetando a progressão do trabalho de parto e o resultado neonatal.The purpose of the present study was to evaluate the efficacy and safety of the association bupivacaine with sufentanil for labor and delivery analgesia through a continuous epidural blockade, for both mother and the neonate. A randomized double blind prospective clinical trial was performed including sixty nulliparous women at the Maternity of CAISM/UNICAMP. When requesting analgesia, the women were randomly allocated to two groups: BS, receiving 12.5 mg of bupivacaine with adrenaline plus 30 µg of sufentanil and BP, receiving 12.5 mg of bupivacaine with adrenaline plus placebo

intraperitoneal infiltration of ropivacaine for post-operative analgesia in open cholecystectomy

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Ahmed, A.; Ahmed, M.

2017-01-01

Objective: To assess the role of Intraperitoneal infiltration of Ropivacaine for post-op analgesia in open cholecystectomy in a low resource setting. Study Design: Randomized controlled trial. Place and Duration of Study: Study was conducted at department of Anesthesia, Scouts Hospital Chitral, from Jul 2014 to Jun 2016. Material and Methods: After taking approval from hospital ethical committee, total 126 patients were divided randomly in two groups. Group I (study group) was given intraperitoneal ropivacaine and group II (control group) was given routine standard analgesia. After complete recovery, pain was measure on VAS score (1-10) at 1 hour, 6 hour and 24 hour in all patients. Patients having pain score of 4 or more were managed with nalbuphine 5 mg IV bolus. Data was analyzed by SPSS version 16. Results: The comparison of pain score (after 1, 6and 24 hours of surgery), showed that study group had significantly (p-value<0.05) less mean pain score as compared with placebo group. Significant rate of nausea/vomiting was observed (p-value<0.05) higher (62%) in placebo group as compared with (38%) in study group. Statistically there was no significant difference (p-value>0.05) between groups on the basis of mean age (47.89 ± 8.56 vs. 48.75 ± 9.36), gender (Females 70% vs. 68%), duration of the surgery (88.54 ± 12.34 minutes vs. 91.70 ± 13.50 minutes) and American society of anesthesiologist (ASA) grades in study and placebo group patients respectively. Conclusion: Intraperitoneal ropivacaine infiltration helped in reducing the post op pain significantly in open cholecystectomy. (author)

Preemptive carprofen for peri-operative analgesia in dogs undergoing Tibial Plateau Leveling Osteotomy (TPLO): a prospective, randomized, blinded, placebo controlled clinical trial.

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Bufalari, A; Maggio, C; Cerasoli, I; Morath, U; Adami, C

2012-03-01

Eighteen client-owned dogs undergoing Tibial Plateau Leveling Osteotomy (TPLO) were included in this blinded clinical study and randomly assigned to one of two treatment groups. Group C (carprofen) received intravenous (IV) carprofen, 4 mg/kg, prior to anesthesia, whereas group P (placebo) received IV saline. General anesthesia was maintained with isoflurane in oxygen and a constant rate infusion (CRI) of sufentanyl IV. Intra-operatively, assessment of nociception was based on changes in physiological parameters and on the analgesics requirement, whereas in the post-operative period evaluation of pain was performed by using a Hellyer and Gaynor pain score and by comparing the doses of rescue buprenorphine required by the two treatment groups. Although no statistically significant differences in intra-operative sufentanyl doses were found between treatment groups, group C had superior cardiovascular stability, and lower post-operative pain scores and rescue buprenorphine doses than group P. Our results indicate that administration of carprofen prior to surgery was effective in improving peri-operative analgesia in dogs undergoing TPLO.

Sucrose ingestion causes opioid analgesia

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F.N. Segato

1997-08-01

Full Text Available The intake of saccharin solutions for relatively long periods of time causes analgesia in rats, as measured in the hot-plate test, an experimental procedure involving supraspinal components. In order to investigate the effects of sweet substance intake on pain modulation using a different model, male albino Wistar rats weighing 180-200 g received either tap water or sucrose solutions (250 g/l for 1 day or 14 days as their only source of liquid. Each rat consumed an average of 15.6 g sucrose/day. Their tail withdrawal latencies in the tail-flick test (probably a spinal reflex were measured immediately before and after this treatment. An analgesia index was calculated from the withdrawal latencies before and after treatment. The indexes (mean ± SEM, N = 12 for the groups receiving tap water for 1 day or 14 days, and sucrose solution for 1 day or 14 days were 0.09 ± 0.04, 0.10 ± 0.05, 0.15 ± 0.08 and 0.49 ± 0.07, respectively. One-way ANOVA indicated a significant difference (F(3,47 = 9.521, P<0.001 and the Tukey multiple comparison test (P<0.05 showed that the analgesia index of the 14-day sucrose-treated animals differed from all other groups. Naloxone-treated rats (N = 7 receiving sucrose exhibited an analgesia index of 0.20 ± 0.10 while rats receiving only sucrose (N = 7 had an index of 0.68 ± 0.11 (t = 0.254, 10 degrees of freedom, P<0.03. This result indicates that the analgesic effect of sucrose depends on the time during which the solution is consumed and extends the analgesic effects of sweet substance intake, such as saccharin, to a model other than the hot-plate test, with similar results. Endogenous opioids may be involved in the central regulation of the sweet substance-produced analgesia.

Placebo effect of an inert gel on experimentally induced leg muscle pain

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James G Hopker

2010-11-01

Full Text Available James G Hopker1, Abigail J Foad2, Christopher J Beedie2, Damian A Coleman2, Geoffrey Leach11Centre for Sports Studies, University of Kent, Chatham, Kent, UK; 2Department of Sports Science, Tourism and Leisure, Canterbury Christ Church University, Canterbury, Kent, UKPurpose: This study examined the therapeutic effects of an inert placebo gel on experimentally induced muscle pain in a sports therapy setting. It aimed to investigate the degree to which conditioned analgesia, coupled with an expectation of intervention, was a factor in subsequent analgesia.Methods: Participants were sixteen male and eight female sports therapy students at a UK University. With institutional ethics board approval and following informed consent procedures, each was exposed to pain stimulus in the lower leg in five conditions, ie, conditioning, prebaseline, experimental (two placebo gel applications, and postbaseline. In conditioning trials, participants identified a level of pain stimulus equivalent to a perceived pain rating of 6/10. An inert placebo gel was then applied to the site with the explicit instruction that it was an analgesic. Participants were re-exposed to the pain stimulus, the level of which, without their knowledge, had been decreased, creating the impression of an analgesic effect resulting from the gel. In experimental conditions, the placebo gel was applied and the level of pain stimulus required to elicit a pain rating of 6/10 recorded.Results: Following application of the placebo gel, the level of pain stimulus required to elicit a pain rating of 6/10 increased by 8.2%. Application of the placebo gel significantly decreased participant’s perceptions of muscle pain (P = 0.001.Conclusion: Subjects’ experience and expectation of pain reduction may be major factors in the therapeutic process. These factors should be considered in the sports therapeutic environment.Keywords: conditioning, expectation, perception, positive belief, sports therapy

Comparison of analgesic efficacy of intravenous Paracetamol and intravenous dexketoprofen trometamol in multimodal analgesia after hysterectomy.

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Unal, Ciğdem; Cakan, Türkay; Baltaci, Bülent; Başar, Hülya

2013-10-01

[corrected] We aimed to evaluate analgesic efficacy, opioid-sparing, and opioid-related adverse effects of intravenous paracetamol and intravenous dexketoprofen trometamol in combination with iv morphine after total abdominal hysterectomy. Sixty American Society of Anesthesiologist Physical Status Classification I-II patients scheduled for total abdominal hysterectomy were enrolled to this double-blinded, randomized, placebo controlled, and prospective study. Patients were divided into three groups as paracetamol, dexketoprofen trometamol, and placebo (0.9% NaCl) due to their post-operative analgesic usage. Intravenous patient controlled analgesia morphine was used as a rescue analgesic in all groups. Pain scores, hemodynamic parameters, morphine consumption, patient satisfaction, and side-effects were evaluated. Visual Analog Scale (VAS) scores were not statistically significantly different among the groups in all evaluation times, but decrease in VAS scores was statistically significant after the evaluation at 12(th) h in all groups. Total morphine consumption (morphine concentration = 0.2 mg/ml) in group paracetamol (72.3 ± 38.0 ml) and dexketoprofen trometamol (69.3 ± 24.1 ml) was significantly lower than group placebo (129.3 ± 22.6 ml) (P dexketoprofen trometamol after surgery and the increase in global satisfaction score was significant only in group placebo. Dexketoprofen trometamol and Paracetamol didn't cause significant change on pain scores, but increased patients' comfort. Although total morphine consumption was significantly decreased by both drugs, the incidence of nausea and vomiting were similar among the groups. According to results of the present study routine addition of dexketoprofen trometamol and paracetamol to patient controlled analgesia morphine after hysterectomies is not recommended.

Integration of white matter network is associated with interindividual differences in psychologically mediated placebo response in migraine patients.

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Liu, Jixin; Ma, Shaohui; Mu, Junya; Chen, Tao; Xu, Qing; Dun, Wanghuan; Tian, Jie; Zhang, Ming

2017-10-01

Individual differences of brain changes of neural communication and integration in the modular architecture of the human brain network exist for the repeated migraine attack and physical or psychological stressors. However, whether the interindividual variability in the migraine brain connectome predicts placebo response to placebo treatment is still unclear. Using DTI and graph theory approaches, we systematically investigated the topological organization of white matter networks in 71 patients with migraine without aura (MO) and 50 matched healthy controls at three levels: global network measure, nodal efficiency, and nodal intramodule/intermodule efficiency. All patients participated in an 8-week sham acupuncture treatment to induce analgesia. In our results, 30% (n = 21) of patients had 50% change in migraine days from baseline after placebo treatment. At baseline, abnormal increased network integration was found in MO patients as compared with the HC group, and the increased global efficiency before starting clinical treatment was associated with their following placebo response. For nodal efficiency, significantly increased within-subnetwork nodal efficiency and intersubnetwork connectivity of the hippocampus and middle frontal gyrus in patients' white matter network were correlated with the responses of follow-up placebo treatment. Our findings suggested that the trait-like individual differences in pain-related maladaptive stress interfered with and diminished the capacity of chronic pain modulation differently, and the placebo response for treatment could be predicted from a prior white matter network modular structure in migraineurs. Hum Brain Mapp 38:5250-5259, 2017. © 2017 Wiley Periodicals, Inc. © 2017 Wiley Periodicals, Inc.

Preventive analgesia

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Dahl, Jørgen B; Kehlet, Henrik

2011-01-01

This paper will discuss the concepts of pre-emptive and preventive analgesia in acute and persistent postsurgical pain, based on the most recent experimental and clinical literature, with a special focus on injury-induced central sensitization and the development from acute to chronic pain. Recent...... of preventive analgesia for persistent postoperative pain are promising. However, clinicians must be aware of the demands for improved design of their clinical studies in order to get more conclusive answers regarding the different avenues for intervention. Summary: The concept of preventive analgesia is still...

Comparative study of analgesic efficacy and morphine-sparing effect of intramuscular dexketoprofen trometamol with ketoprofen or placebo after major orthopaedic surgery

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Hanna, M H; Elliott, K M; Stuart-Taylor, M E; Roberts, D R; Buggy, D; Arthurs, G J

2003-01-01

Aims Multimodal analgesia is thought to produce balanced and effective postoperative pain control. A combined therapy with nonsteroidal anti-inflammatory drugs (NSAIDs) and opiates could result in synergistic analgesia by acting through different mechanisms. Currently there are very few parenterally administered NSAIDs suitable for the immediate postoperative period. Therefore, this study was undertaken to assess the analgesic efficacy, relative potency, and safety of parenteral dexketoprofen trometamol following major orthopaedic surgery. Methods One hundred and seventy-two patients elected for prosthetic surgery, were randomized to receive two intramuscular injections (12 hourly) of either dexketoprofen 50 mg, ketoprofen 100 mg or placebo in a double-blind fashion. Postoperatively, the patient's pain was stabilized, then they were connected to a patient- controlled analgesia system (PCA) of morphine for 24 h (1 mg with 5 min lockout). Results The mean cumulative amount of morphine (CAM) used was of 39 mg in the dexketoprofen group and 45 mg in the ketoprofen group vs 64 mg in the placebo group. (Reduction in morphine use was approximately one-third between the active compounds compared with placebo (adjusted mean difference of −25 mg between dexketoprofen and placebo and −23 mg between ketoprofen and placebo. These differences were statistically significant: P ≤ 0.0003; 95% CI −35, −14. Pain-intensity scores were consistently lower with the active compounds, the lowest corresponded to the dexketoprofen-treated patients. Regarding sedation, there were statistically significant differences between the two active compounds and placebo only at the 2nd and 13th hours. Wound bleeding was specifically measured with no statistically significant differences found between all the groups. Conclusions Intramuscular administration of dexketoprofen trometamol 50 mg has good analgesic efficacy both in terms of opioid-sparing effect and control of pain after major

Comparison of analgesic efficacy of intravenous Paracetamol and intravenous dexketoprofen trometamol in multimodal analgesia after hysterectomy

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Çiğdem Ünal

2013-01-01

Full Text Available Backround: We aimed to evaluate analgesic efficacy, opioid-sparing, and opioid-related adverse effects of intravenous paracetamol and intravenous dexketoprofen trometamol in combination with iv morphine after total abdominal hysterectomy. Materials and Methods: Sixty American Society of Anesthesiologist Physical Status Classification I-II patients scheduled for total abdominal hysterectomy were enrolled to this double-blinded, randomized, placebo controlled, and prospective study. Patients were divided into three groups as paracetamol, dexketoprofen trometamol, and placebo (0.9% NaCl due to their post-operative analgesic usage. Intravenous patient controlled analgesia morphine was used as a rescue analgesic in all groups. Pain scores, hemodynamic parameters, morphine consumption, patient satisfaction, and side-effects were evaluated. Results: Visual Analog Scale (VAS scores were not statistically significantly different among the groups in all evaluation times, but decrease in VAS scores was statistically significant after the evaluation at 12 th h in all groups. Total morphine consumption (morphine concentration = 0.2 mg/ml in group paracetamol (72.3 ± 38.0 ml and dexketoprofen trometamol (69.3 ± 24.1 ml was significantly lower than group placebo (129.3 ± 22.6 ml (P < 0.001. Global satisfaction scores of the patients in group placebo was significantly lower than group dexketoprofen trometamol after surgery and the increase in global satisfaction score was significant only in group placebo. Conclusion: Dexketoprofen trometamol and Paracetamol didn′t cause significant change on pain scores, but increased patients′ comfort. Although total morphine consumption was significantly decreased by both drugs, the incidence of nausea and vomiting were similar among the groups. According to results of the present study routine addition of dexketoprofen trometamol and paracetamol to patient controlled analgesia morphine after hysterectomies is not

Preemptive Analgesia with Ibuprofen and Acetaminophen in Pediatric Lower Abdominal Surgery

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P Kashefi

2005-07-01

Full Text Available Background: Postoperative pain is a significant problem in pediatrics. Preemptive administration of analgesics has recently emerged as a method to enhance pain management associated with surgery. The objective of this study was to compare the analgesic efficacy of a single-dose of preoperative oral ibuprofen versus acetaminophen in preventing pain after lower abdominal surgery in pediatrics. Methods: In this randomized, double-blind study, following lower abdominal surgery, 75 children, aging 3 to 12 years, were assigned to receive either ibuprofen 20 mg /kg (n=25 or acetaminophen 35 mg/kg (n=25 or placebo (n=25 2 hours before surgery. Agitation in recovery was measured and postoperative pain was quantified 3 and 24 hours after surgery by Oucher’s scale. The amount of postoperative analgesic needed in the ward was also assessed. Results: It was found that preoperative administration of ibuprofen and acetaminophen can reduce agitation in recovery but there was no difference in the agitation score between ibuprofen and acetaminophen groups (P=0.145. Agitation score was significantly lower in ibuprofen group compared to placebo (P>0.005. Similarly, patients in the acetaminophen group were considerably less agitated than those in the placebo group (P=0.002. No significant difference was observed in pain intensity 3 and 24 hours after operation between the three groups [(P=0.495 and (P=0.582 respectively]. The amount of postoperative analgesic needed during ward hospitalization was not significantly different among the three groups (P>0.005. Conclusion: These results provide evidence that preemptive acetaminophen and ibuprofen may reduce agitation during recovery but they neither improve the postoperative pain nor reduce analgesics consumption in ward Key words: Postoperative analgesia, Acetaminophen, Ibuprofen, Preemptive analgesia

Distal Ureteric Stones and Tamsulosin: A Double-Blind, Placebo-Controlled, Randomized, Multicenter Trial.

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Furyk, Jeremy S; Chu, Kevin; Banks, Colin; Greenslade, Jaimi; Keijzers, Gerben; Thom, Ogilvie; Torpie, Tom; Dux, Carl; Narula, Rajan

2016-01-01

We assess the efficacy and safety of tamsulosin compared with placebo as medical expulsive therapy in patients with distal ureteric stones less than or equal to 10 mm in diameter. This was a randomized, double-blind, placebo-controlled, multicenter trial of adult participants with calculus on computed tomography (CT). Patients were allocated to 0.4 mg of tamsulosin or placebo daily for 28 days. The primary outcomes were stone expulsion on CT at 28 days and time to stone expulsion. There were 403 patients randomized, 81.4% were men, and the median age was 46 years. The median stone size was 4.0 mm in the tamsulosin group and 3.7 mm in the placebo group. Of 316 patients who received CT at 28 days, stone passage occurred in 140 of 161 (87.0%) in the tamsulosin group and 127 of 155 (81.9%) with placebo, a difference of 5.0% (95% confidence interval -3.0% to 13.0%). In a prespecified subgroup analysis of large stones (5 to 10 mm), 30 of 36 (83.3%) tamsulosin participants had stone passage compared with 25 of 41 (61.0%) with placebo, a difference of 22.4% (95% confidence interval 3.1% to 41.6%) and number needed to treat of 4.5. There was no difference in urologic interventions, time to self-reported stone passage, pain, or analgesia requirements. Adverse events were generally mild and did not differ between groups. We found no benefit overall of 0.4 mg of tamsulosin daily for patients with distal ureteric calculi less than or equal to 10 mm in terms of spontaneous passage, time to stone passage, pain, or analgesia requirements. In the subgroup with large stones (5 to 10 mm), tamsulosin did increase passage and should be considered. Copyright © 2015 American College of Emergency Physicians. Published by Elsevier Inc. All rights reserved.

Involvement of protein kinase C in the modulation of morphine-induced analgesia and the inhibitory effects of exposure to 60-hz magnetic fields in the land snail, Cepaea nemoralis

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Kavaliers, M.; Ossenkopp, K.P. (Univ. of Western Ontario, London (Canada))

1990-02-26

One of the more consistent and dramatic effects of exposure to magnetic fields is the attenuation of morphine-induced analgesia. Results of previous studies have implicated alterations in calcium channel functioning and Ca{sup ++} flux in the mediation of these effects. It is generally accepted that Ca{sup ++}-activated-phospholipid-dependent protein kinase (Protein kinase C; PKC) plays an important role in relaying trans-membrane signaling in diverse Ca{sup ++} dependent cellular processes. In experiment 1 we observed that morphine-induced analgesia in the land snail, Cepaea nemoralis, as measured by the latency of an avoidance behavior to a warmed surface, was reduced by the PKC activator, SC-9, and was enhanced by the PKC inhibitors, H-7 and H-9. In contrast, HA-10004, a potent inhibitor of other protein kinases, but only a very weak inhibitor of PKC, had no effect on morphine-induced analgesia. In experiment 2 exposure of snails for 30 minutes to a 1.0 gauss (rms) 60-Hz magnetic field reduced morphine-induced analgesia. This inhibitory effect of the magnetic field was reduced by the PKC inhibitors, H-7 and H-9, and was augmented by the PKC activator SC-9. These results suggest that: (i) PKC is involved in the modulation of morphine-induced analgesia and, (ii) the inhibitory effects of magnetic fields involve PKC.

Placebo effects of a sham opioid solution: a randomized controlled study in patients with chronic low back pain.

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Klinger, Regine; Kothe, Ralph; Schmitz, Julia; Kamping, Sandra; Flor, Herta

2017-10-01

This study tested the experimental placebo effect in a group of chronic pain patients. Forty-eight patients having chronic back pain participated in a randomized clinical trial that tested the efficacy of a sham opioid solution (NaCl) compared with an alleged neutral, completely inactive solution (NaCl). We shaped the placebo effect by 2 interventions: verbal instruction and conditioning. The patients were either told that the "solution reduces pain and improves physical capacity" or the "solution is neutral, a placebo." Half of each group was additionally conditioned (coupling solution with reduced experimental pain), yielding 4 subgroups with 12 participants each. Outcome measures were as follows: the patients' clinical back pain ratings and acute pain ratings (both examined by numerical rating scale 0-10) and self-rated functional capacity (0%-100%; time required for the exercise). Expected pain relief before and after solution intake was also assessed. The inactive solution (NaCl), when presented as an effective treatment (sham "opioid" solution), induced placebo analgesia as evident in lower ratings of the patients' clinical back pain (F(3.12,144.21) = 25.05, P pain ratings (F(1.99,87.40) = 18.12, P pain expectations, and they were maintained in both sham opioid groups. The results suggest that it may be clinically useful to explicitly integrate placebo analgesia responses into pain management.

Remifentanil patient controlled analgesia versus epidural analgesia in labour. A multicentre randomized controlled trial

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Freeman Liv M

2012-07-01

Full Text Available Abstract Background Pain relief during labour is a topic of major interest in the Netherlands. Epidural analgesia is considered to be the most effective method of pain relief and recommended as first choice. However its uptake by pregnant women is limited compared to other western countries, partly as a result of non-availability due to logistic problems. Remifentanil, a synthetic opioid, is very suitable for patient controlled analgesia. Recent studies show that epidural analgesia is superior to remifentanil patient controlled analgesia in terms of pain intensity score; however there was no difference in satisfaction with pain relief between both treatments. Methods/design The proposed study is a multicentre randomized controlled study that assesses the cost-effectiveness of remifentanil patient controlled analgesia compared to epidural analgesia. We hypothesize that remifentanil patient controlled analgesia is as effective in improving pain appreciation scores as epidural analgesia, with lower costs and easier achievement of 24 hours availability of pain relief for women in labour and efficient pain relief for those with a contraindication for epidural analgesia. Eligible women will be informed about the study and randomized before active labour has started. Women will be randomly allocated to a strategy based on epidural analgesia or on remifentanil patient controlled analgesia when they request pain relief during labour. Primary outcome is the pain appreciation score, i.e. satisfaction with pain relief. Secondary outcome parameters are costs, patient satisfaction, pain scores (pain-intensity, mode of delivery and maternal and neonatal side effects. The economic analysis will be performed from a short-term healthcare perspective. For both strategies the cost of perinatal care for mother and child, starting at the onset of labour and ending ten days after delivery, will be registered and compared. Discussion This study, considering cost

A systematic review of sex differences in the placebo and the nocebo effect

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Vambheim SM

2017-07-01

Full Text Available Sara M Vambheim,1 Magne Arve Flaten2 1Department of Psychology, UiT, The Arctic University of Norway, Tromsø, 2Department of Psychology, Norwegian University of Science and Technology (NTNU, Trondheim, Norway Objectives: The present review investigated whether there are systematic sex differences in the placebo and the nocebo effect. Methods: A literature search was conducted in multiple electronic databases. Studies were included if the study compared a group or condition where a placebo was administered to a natural history group or similar cohort. Results: Eighteen studies were identified – 12 on placebo effects and 6 on nocebo effects. Chi-square tests revealed that 1 males responded more strongly to placebo treatment, and females responded more strongly to nocebo treatment, and 2 males responded with larger placebo effects induced by verbal information, and females responded with larger nocebo effects induced by conditioning procedures. Conclusion: This review indicates that there are sex differences in the placebo and nocebo effects, probably caused by sex differences in stress, anxiety, and the endogenous opioid system. Keywords: placebo response, nocebo response, placebo analgesia, nocebo hyperalgesia, sex differences

Interaction of acupuncture treatment and manipulation laterality modulated by the default mode network.

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Niu, Xuan; Zhang, Ming; Liu, Zhenyu; Bai, Lijun; Sun, Chuanzhu; Wang, Shan; Wang, Xiaocui; Chen, Zhen; Chen, Hongyan; Tian, Jie

2017-01-01

lobule, inferior parietal lobule, precuneus, and left posterior cingulate cortex. It is also proved that disruptions of the default mode network may account for the cognitive and behavioral impairments in chronic pain patients. Our findings further suggested that default mode network participates in the modulation of spatial-oriented attention on placebo analgesia as a mechanism underlying the degree to which treatment side corresponding to the pain.

Impact of co-administration of oxycodone and smoked cannabis on analgesia and abuse liability.

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Cooper, Ziva D; Bedi, Gillinder; Ramesh, Divya; Balter, Rebecca; Comer, Sandra D; Haney, Margaret

2018-02-05

Cannabinoids combined with opioids produce synergistic antinociceptive effects, decreasing the lowest effective antinociceptive opioid dose (i.e., opioid-sparing effects) in laboratory animals. Although pain patients report greater analgesia when cannabis is used with opioids, no placebo-controlled studies have assessed the direct effects of opioids combined with cannabis in humans or the impact of the combination on abuse liability. This double-blind, placebo-controlled, within-subject study determined if cannabis enhances the analgesic effects of low dose oxycodone using a validated experimental model of pain and its effects on abuse liability. Healthy cannabis smokers (N = 18) were administered oxycodone (0, 2.5, and 5.0 mg, PO) with smoked cannabis (0.0, 5.6% Δ 9 tetrahydrocannabinol [THC]) and analgesia was assessed using the Cold-Pressor Test (CPT). Participants immersed their hand in cold water (4 °C); times to report pain (pain threshold) and withdraw the hand from the water (pain tolerance) were recorded. Abuse-related effects were measured and effects of oxycodone on cannabis self-administration were determined. Alone, 5.0 mg oxycodone increased pain threshold and tolerance (p ≤ 0.05). Although active cannabis and 2.5 mg oxycodone alone failed to elicit analgesia, combined they increased pain threshold and tolerance (p ≤ 0.05). Oxycodone did not increase subjective ratings associated with cannabis abuse, nor did it increase cannabis self-administration. However, the combination of 2.5 mg oxycodone and active cannabis produced small, yet significant, increases in oxycodone abuse liability (p ≤ 0.05). Cannabis enhances the analgesic effects of sub-threshold oxycodone, suggesting synergy, without increases in cannabis's abuse liability. These findings support future research into the therapeutic use of opioid-cannabinoid combinations for pain.

Nitrous oxide for labor analgesia: Utilization and predictors of conversion to neuraxial analgesia.

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Sutton, Caitlin D; Butwick, Alexander J; Riley, Edward T; Carvalho, Brendan

2017-08-01

We examined the characteristics of women who choose nitrous oxide for labor analgesia and identified factors that predict conversion from nitrous oxide to labor neuraxial analgesia. Retrospective descriptive study. Labor and Delivery Ward. 146 pregnant women who used nitrous oxide for analgesia during labor and delivery between September 2014 and September 2015. Chart review only. Demographic, obstetric, and intrapartum characteristics of women using nitrous oxide were examined. Multivariable logistic regression was performed to identify factors associated with conversion from nitrous oxide to neuraxial analgesia. Data are presented as n (%), median [IQR], adjusted relative risk (aRR), and 95% confidence intervals (CI) as appropriate. During the study period, 146 women used nitrous oxide for labor analgesia (accounting for 3% of the total deliveries). The majority (71.9%) of women who used nitrous oxide were nulliparous, and over half (51.9%) had expressed an initial preference for "nonmedical birth." The conversion rate to neuraxial blockade was 63.2%, compared to a concurrent institutional rate of 85.1% in women who did not use nitrous oxide. Factors associated with conversion from nitrous oxide to neuraxial blockade were labor induction (aRR=2.0, CI 1.2-3.3) and labor augmentation (aRR=1.7, CI 1.0-2.9). Only a small number of women opted to use nitrous oxide during labor, analgesia was minimal, and most converted to neuraxial analgesia. Women with induced and augmented labors should be counseled about the increased likelihood that they will convert to neuraxial analgesia. Copyright © 2017 Elsevier Inc. All rights reserved.

Transdermal nitroglycerine enhances postoperative analgesia of intrathecal neostigmine following abdominal hysterectomies

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Fareed Ahmed

2010-01-01

Full Text Available This study was carried out to assess the effect of nitroglycerine (transdermal on intrathecal neostigmine with bupivacaine on postoperative analgesia and note the incidence of adverse effects, if any. After taking informed consent, 120 patients of ASA Grade I and II were systematically randomised into four groups of 30 each. Patients were premedicated with midazolam 0.05 mg/kg intravenously and hydration with Ringer′s lactate solution 10ml/kg preoperatively in the holding room. Group I patients received Intrathecal injection of 15 mg bupivacaine with 1ml of normal saline and transdermal placebo patch. Group II patients received Intrathecal injection of 15 mg bupivacaine with 5 mcg of neostigmine and transdermal placebo patch. Group III patients received Intrathecal injection of 15 mg bupivacaine with 1ml of normal saline with transdermal nitroglycerine patch (5 mg/24 hours. Group IV patients received Intrathecal injection of 15 mg bupivacaine with 5mcg of neostigmine and transdermal nitroglycerine patch (5 mg/24 hours, applied on a non anaesthetised area after 20 minutes. Groups were demographically similar and did not differ in intraoperative characteristics like sensory block, motor block, haemodynamic parameters and SpO 2 . The mean duration of analgesia was 202.17 minutes, 407.20 minutes, 207.53 minutes and 581.63 minutes in control group (I, neostigmine group (II, nitroglycerine group (III and nitroglycerine neostigmine group (IV respectively (P< 0.01. To conclude, our results show that transdermal nitroglycerine itself does not show any analgesic potential but it enhances the analgesic potential of intrathecal neostigmine.

The effect of etoricoxib premedication on postoperative analgesia requirement in orthopedic and trauma patients

International Nuclear Information System (INIS)

Siddiqui, Ahsan K.; Al-Ghamdi, Abdulmohsin A.; Mowafi, Hany A.; Ismail, Salah A.; Sadat-Ali, M.; Al-Dakheel, Dakheel A.

2008-01-01

We have hypothesized that etoricoxib premedication would reduce the need for additional opioids following orthopedic trauma surgery. A double blind, controlled study, conducted in King Fahd University Hospital, King Faisal University, Dammam, Kingdom of Saudi Arabia. After obtaining the approval of Research and Ethics Committee and written consent, 200 American Society of Anesthesiology grade I and II patients that underwent elective upper limb or lower limb fracture fixation surgeries during the period from August 2005 to October 2007 were studied. Patients were randomly premedicated using 120 mg of etoricoxib or placebo n=100, each. To alleviate postoperative pain, a patient controlled analgesia device was programmed to deliver one mg of morphine intravenously locked lockout time, 6 minutes. Visual analog scale and total postoperative morphine consumption over 24 hours and the adverse effects were recorded. One hundred patients in each group completed the study period. Etoricoxib premedication provides a statistically significant postoperative morphine sparing effect over 24 hours postoperatively. Total morphine consumption was 44.2 (8.2) in the placebo and 35.17 mg in the etoricoxib groups p<0.001. The incidence of nausea and vomiting requiring treatment was lower in the etoricoxib group. p=0.014. The postoperative blood loss was similar in both groups. Etoricoxib is a suitable premedication before traumatic orthopedic surgery as it enhanced postoperative analgesia and reduced the need for morphine. (author)

Hypnotic analgesia reduces brain responses to pain seen in others.

Science.gov (United States)

Braboszcz, Claire; Brandao-Farinelli, Edith; Vuilleumier, Patrik

2017-08-29

Brain responses to pain experienced by oneself or seen in other people show consistent overlap in the pain processing network, particularly anterior insula, supporting the view that pain empathy partly relies on neural processes engaged by self-nociception. However, it remains unresolved whether changes in one's own pain sensation may affect empathic responding to others' pain. Here we show that inducing analgesia through hypnosis leads to decreased responses to both self and vicarious experience of pain. Activations in the right anterior insula and amygdala were markedly reduced when participants received painful thermal stimuli following hypnotic analgesia on their own hand, but also when they viewed pictures of others' hand in pain. Functional connectivity analysis indicated that this hypnotic modulation of pain responses was associated with differential recruitment of right prefrontal regions implicated in selective attention and inhibitory control. Our results provide novel support to the view that self-nociception is involved during empathy for pain, and demonstrate the possibility to use hypnotic procedures to modulate higher-level emotional and social processes.

Paediatric analgesia in an Emergency Department.

LENUS (Irish Health Repository)

Hawkes, C

2012-02-03

Timely management of pain in paediatric patients in the Emergency Department (ED) is a well-accepted performance indicator. We describe an audit of the provision of analgesia for children in an Irish ED and the introduction of a nurse-initiated analgesia protocol in an effort to improve performance. 95 children aged 1-16 presenting consecutively to the ED were included and time from triage to analgesia, and the rate of analgesia provision, were recorded. The results were circulated and a nurse initiated analgesia protocol was introduced. An audit including 145 patients followed this. 55.6% of patients with major fractures received analgesia after a median time of 54 minutes, which improved to 61.1% (p = 0.735) after 7 minutes (p = 0.004). Pain score documentation was very poor throughout, improving only slightly from 0% to 19.3%. No child had a documented pain score, which slightly improved to 19.3%. We recommend other Irish EDs to audit their provision of analgesia for children.

Acupuncture analgesia involves modulation of pain-induced gamma oscillations and cortical network connectivity.

Science.gov (United States)

Hauck, Michael; Schröder, Sven; Meyer-Hamme, Gesa; Lorenz, Jürgen; Friedrichs, Sunja; Nolte, Guido; Gerloff, Christian; Engel, Andreas K

2017-11-24

Recent studies support the view that cortical sensory, limbic and executive networks and the autonomic nervous system might interact in distinct manners under the influence of acupuncture to modulate pain. We performed a double-blind crossover design study to investigate subjective ratings, EEG and ECG following experimental laser pain under the influence of sham and verum acupuncture in 26 healthy volunteers. We analyzed neuronal oscillations and inter-regional coherence in the gamma band of 128-channel-EEG recordings as well as heart rate variability (HRV) on two experimental days. Pain ratings and pain-induced gamma oscillations together with vagally-mediated power in the high-frequency bandwidth (vmHF) of HRV decreased significantly stronger during verum than sham acupuncture. Gamma oscillations were localized in the prefrontal cortex (PFC), mid-cingulate cortex (MCC), primary somatosensory cortex and insula. Reductions of pain ratings and vmHF-power were significantly correlated with increase of connectivity between the insula and MCC. In contrast, connectivity between left and right PFC and between PFC and insula correlated positively with vmHF-power without a relationship to acupuncture analgesia. Overall, these findings highlight the influence of the insula in integrating activity in limbic-saliency networks with vagally mediated homeostatic control to mediate antinociception under the influence of acupuncture.

Understanding Central Mechanisms of Acupuncture Analgesia Using Dynamic Quantitative Sensory Testing: A Review

Directory of Open Access Journals (Sweden)

Jiang-Ti Kong

2013-01-01

Full Text Available We discuss the emerging translational tools for the study of acupuncture analgesia with a focus on psychophysical methods. The gap between animal mechanistic studies and human clinical trials of acupuncture analgesia calls for effective translational tools that bridge neurophysiological data with meaningful clinical outcomes. Temporal summation (TS and conditioned pain modulation (CPM are two promising tools yet to be widely utilized. These psychophysical measures capture the state of the ascending facilitation and the descending inhibition of nociceptive transmission, respectively. We review the basic concepts and current methodologies underlying these measures in clinical pain research, and illustrate their application to research on acupuncture analgesia. Finally, we highlight the strengths and limitations of these research methods and make recommendations on future directions. The appropriate addition of TS and CPM to our current research armamentarium will facilitate our efforts to elucidate the central analgesic mechanisms of acupuncture in clinical populations.

Assessment of direct analgesic effect of duloxetine for chronic low back pain: post hoc path analysis of double-blind, placebo-controlled studies

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Enomoto H

2017-06-01

patients were randomized to subgroups based on baseline pain scores, baseline depressive symptoms scores, and gender.Conclusion: Duloxetine significantly improved pain in patients with CLBP. Path analyses results suggest that duloxetine produced analgesia mainly through mechanisms directly impacting pain modulation rather than lifting depressive symptoms. This effect was consistent across all subgroups tested. Keywords: duloxetine, direct analgesic effect, chronic low back pain, post hoc path analysis, double-blind, placebo-controlled studies

Evaluation of ketorolac compared to ketorolac plus dipyrone in post-operative analgesia of videolaparoscopic cholecystectomy

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Silvia Katlauskas Muraro

2009-03-01

Full Text Available Objectives: To compare the analgesic effect of ketorolac with the association of ketorolac plus dipyrone after videolaparoscpic cholecystectomy and with a placebo group. Methods: After approval by the Research Ethics Committee and after having the informed consent signed, 60 patients aged between 18 and 60 years who underwent videolaparoscopic cholecystectomy were evaluated for the post-operative analgesia provided by ketorolac compared to ketorolac plus dipyrone. The patients underwent general anesthesia (with propofol, alfentanil, rocuronium and maintenance with isoflurane. Twenty patients received 20 ml water, 20 patients received ketorolac 30 mg in 20 ml water and 20 received ketorolac 30 mg plus dipyrone 2 g in 20 ml water, during anesthetic induction. In the post-operative recovery room, the patients were evaluated to the moment of their first pain complaint with the use of a visual analogue scale and a verbal pain scale every hour in the first six hours. When necessary, morphine was administered as a rescue medication for pain relief and a PCA pump with morphine solution was turned on. Rresults: Total morphine use was lower in the ketorolac plus dipyrone Group (2 mg and in the ketorolac (2 mg Group, compared to the placebo Group (10.5 mg. Of 20 cases of ketorolac plus dipyrone, eight patients did not complain of pain in the post-operative period, while only three patients did not complain in the ketorolac Group and in the placebo Group (p = 0,05. Cconclusion: Ketorolac is a potent analgesic agent widely used for acute pain treatment, especially after surgeries, with an analgesic potency comparable to that of opiates, the most commonly drugs used during the post-operative of medium to major surgeries. In this study, the results analyzed at this moment show that the association of ketorolac plus dipyrone seemed to be superior to post-operative analgesia compared to the use of ketorolac.

Efficacy and tolerability of intravenous morphine patient-controlled analgesia (PCA) in women undergoing cesarean delivery.

Science.gov (United States)

Andziak, Marta; Beta, Jarosław; Barwijuk, Michal; Issat, Tadeusz; Jakimiuk, Artur J

2015-06-01

The aim of the study was to evaluate analgesic efficacy and tolerability of patient-controlled analgesia (PCA) with intravenous morphine. Our observational study included 50 women who underwent a Misgav-Ladach or modified Misgav-Ladach cesarean section. Automated PCA infusion device (Medima S-PCA Syringe Pump, Medima, Krakow, Poland) was used for postoperative pain control. Time of morphine administration or initiation of intravenous patient-controlled analgesia (IV PCA) with morphine was recorded, as well as post-operative pain at rest assessed by a visual analogue scale (VAS). All patients were followed up for 24 hours after discharge from the operating room, taking into account patient records, worst pain score at rest, number of IV PCA attempts, and drug consumption. Median of total morphine doses used during the postoperative period was 42.9mg (IQR 35.6-48.5), with median infusion time of 687.0 min. (IQR 531.0-757.5). Pain severity and total drug consumption improved after the first 3 hours following cesarean delivery (p PCA attempts per patient was 33 (IQR: 24-37), with median of 11 placebo attempts (IQR: 3-27). Patient-controlled analgesia with morphine is an efficient and acceptable analgesic method in women undergoing cesarean section.

Clinical and ethical implications of placebo effects: enhancing patients' benefits from pain treatment.

Science.gov (United States)

Klinger, Regine; Flor, Herta

2014-01-01

Expectancy and learning are the core psychological mechanisms of placebo analgesia. They interact with further psychological processes such as emotions and motivations (e.g., anxiety, desire for relief), somatic focus, or cognitions (e.g., attitudes toward the treatment). The development of placebo responsiveness and the actual placebo response in a person is the result of the complex interaction between factors traced back to the individual learning history related to analgesic drugs or treatments and factors of the current context referring to the analgesic or placebo treatment. The aim of this chapter is to depict these complex interactions in a new model of analgesic placebo effects. It joins aspects of the learning history (preexisting experiences and preexisting expectations) of a patient with aspects of the current context (current expectation as a result of external and internal situation in which a pain medication/treatment/placebo is taken, e.g., current information about pain medication, current specific context/cues, desire for pain relief, certainty about upcoming pain relief, current expectation about pain reducing course, current selective attention, increased pain experience, or decreased pain experience). In order to exploit placebo efficacy for an analgesic treatment it is worthwhile to assess in which direction each of these factors exerts its influence in order to maximize placebo effects for a specific patient. By applying placebo mechanisms in this differentiated way, the efficacy of pain treatment can be deliberately boosted.

Effectivness of dexametasone vs. Magnesium sulphate in postoperative analgesia: Dexametasone vs. Magnesium sulphate

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Dautaj Brikena

2016-01-01

Full Text Available Introduction: Preoperative use of additive substances may be very helpful in perioperative acute pain management. Intravenous administration of dexametasone in preoperative period prevents postoperative nausea and vomiting but also provides better pain relief. It is also well known that magnesium sulphate (the NMDA receptor's antagonist by its central mechanism of action may be effective in postoperative pain control. Aim: The purpose of this study was to evaluate the effect of dexametasone and magnesium sulphate on postoperative pain management in patients undergoing abdominal surgery (open cholecystectomy. Methods: Seventy eight patients scheduled for elective surgery (open cholecystectomy were included in this study. This was the prospective cohort randomized placebo- controlled study. A total of 78 patients were randomized into three groups. Each group had twenty six patients. The group D, received dexametasone 0.1 mg/ kg iv 30 minutes before surgery. The group M received magnesium sulphate 3 mg/kg iv 30 minutes before surgery. The third group S was placebo group and patients in this group received saline in the same volume for each patient. For pain control after surgery all patients received tramadol 0.9-1.2 mg/kg and diklophenac 1.76 mg/kg. When necessary (VAS ≥ 7, morphine sulphate in dose 0.15 mg/kg was administred subcutaneously For treatment of emetic episodes metoclopramid 10 mg iv. was used. The patients were observed for intensity of pain measured VAS 0-10, pain relief and satisfaction with therapy, sedation, adverse events, emetic episodes and hemodynamic parameters. Results: There was no difference between groups regarding demographic data (age, gender, body weight, ASA score, comorbidity, duration of surgery and anesthesia and amount of fentanyl received during surgery. In group D 11.54% of patients received additional analgesia (morphine sulphate 0.15 mg/kg sc in the first 4 hours and 27% of patients in the first 24 hours

Procedural sedation analgesia

OpenAIRE

Sheta, Saad A

2010-01-01

The number of noninvasive and minimally invasive procedures performed outside of the operating room has grown exponentially over the last several decades. Sedation, analgesia, or both may be needed for many of these interventional or diagnostic procedures. Individualized care is important when determining if a patient requires procedural sedation analgesia (PSA). The patient might need an anti-anxiety drug, pain medicine, immobilization, simple reassurance, or a combination of these interve...

Patient controlled analgesia with remifentanil versus epidural analgesia in labour : randomised multicentre equivalence trial

NARCIS (Netherlands)

Freeman, Liv M; Bloemenkamp, Kitty W; Franssen, Maureen T; Papatsonis, Dimitri N; Hajenius, Petra J; Hollmann, Markus W; Woiski, Mallory D; Porath, Martina; van den Berg, Hans J; van Beek, Erik; Borchert, Odette W H M; Schuitemaker, Nico; Sikkema, J Marko; Kuipers, A H M; Logtenberg, Sabine L M; van der Salm, Paulien C M; Oude Rengerink, Katrien; Lopriore, Enrico; van den Akker-van Marle, M Elske; le Cessie, Saskia; van Lith, Jan M; Struys, Michel M; Mol, Ben Willem J; Dahan, Albert; Middeldorp, Johanna M; Oude Rengerink, K

2015-01-01

OBJECTIVE: To determine women's satisfaction with pain relief using patient controlled analgesia with remifentanil compared with epidural analgesia during labour. DESIGN: Multicentre randomised controlled equivalence trial. SETTING: 15 hospitals in the Netherlands. PARTICIPANTS: Women with an

Patient controlled analgesia with remifentanil versus epidural analgesia in labour : randomised multicentre equivalence trial

NARCIS (Netherlands)

Freeman, Liv M.; Bloemenkamp, Kitty W.; Franssen, Maureen T.; Papatsonis, Dimitri N.; Hajenius, Petra J.; Hollmann, Markus W.; Woiski, Mallory D.; Porath, Martina; van den Berg, Hans J.; van Beek, Erik; Borchert, Odette W. H. M.; Schuitemaker, Nico; Sikkema, J. Marko; Kuipers, A. H. M.; Logtenberg, Sabine L. M.; van der Salm, Paulien C. M.; Rengerink, Katrien Oude; Lopriore, Enrico; van den Akker-van Marle, M. Elske; le Cessie, Saskia; van Lith, Jan M.; Struys, Michel M.; Mol, Ben Willem J.; Dahan, Albert; Middeldorp, Johanna M.

2015-01-01

Objective To determine women's satisfaction with pain relief using patient controlled analgesia with remifentanil compared with epidural analgesia during labour. Design Multicentre randomised controlled equivalence trial. Setting 15 hospitals in the Netherlands. Participants Women with an

Patient controlled analgesia with remifentanil versus epidural analgesia in labour: randomised multicentre equivalence trial

NARCIS (Netherlands)

Freeman, L.M.; Bloemenkamp, K.W.; Franssen, M.T.; Papatsonis, D.N.; Hajenius, P.J.; Hollmann, M.W.; Woiski, M.D.; Porath, M.; Berg, H.J. van den; Beek, E. van; Borchert, O.W.; Schuitemaker, N.; Sikkema, J.M.; Kuipers, A.H.; Logtenberg, S.L.; Salm, P.C. van der; Oude Rengerink, K.; Lopriore, E.; Akker-van Marle, M.E. van den; Cessie, S. le; Lith, J.M. van; Struys, M.M.; Mol, B.W.; Dahan, A; Middeldorp, J.M.

2015-01-01

OBJECTIVE: To determine women's satisfaction with pain relief using patient controlled analgesia with remifentanil compared with epidural analgesia during labour. DESIGN: Multicentre randomised controlled equivalence trial. SETTING: 15 hospitals in the Netherlands. PARTICIPANTS: Women with an

Procedural sedation analgesia

Directory of Open Access Journals (Sweden)

Sheta Saad

2010-01-01

Full Text Available The number of noninvasive and minimally invasive procedures performed outside of the operating room has grown exponentially over the last several decades. Sedation, analgesia, or both may be needed for many of these interventional or diagnostic procedures. Individualized care is important when determining if a patient requires procedural sedation analgesia (PSA. The patient might need an anti-anxiety drug, pain medicine, immobilization, simple reassurance, or a combination of these interventions. The goals of PSA in four different multidisciplinary practices namely; emergency, dentistry, radiology and gastrointestinal endoscopy are discussed in this review article. Some procedures are painful, others painless. Therefore, goals of PSA vary widely. Sedation management can range from minimal sedation, to the extent of minimal anesthesia. Procedural sedation in emergency department (ED usually requires combinations of multiple agents to reach desired effects of analgesia plus anxiolysis. However, in dental practice, moderate sedation analgesia (known to the dentists as conscious sedation is usually what is required. It is usually most effective with the combined use of local anesthesia. The mainstay of success for painless imaging is absolute immobility. Immobility can be achieved by deep sedation or minimal anesthesia. On the other hand, moderate sedation, deep sedation, minimal anesthesia and conventional general anesthesia can be all utilized for management of gastrointestinal endoscopy.

Labour pain with remifentanil patient-controlled analgesia versus epidural analgesia : a randomised equivalence trial

NARCIS (Netherlands)

Logtenberg, Slm; Oude Rengerink, K; Verhoeven, C J; Freeman, L M; van den Akker, Esa; Godfried, M B; van Beek, E; Borchert, Owhm; Schuitemaker, N; van Woerkens, Ecsm; Hostijn, I; Middeldorp, J M; van der Post, J A; Mol, B W

OBJECTIVE: To distinguish satisfaction with pain relief using remifentanil patient-controlled analgesia (RPCA) compared with epidural analgesia (EA) in low-risk labouring women. DESIGN: Randomised controlled equivalence trial. SETTING: Eighteen midwifery practices and six hospitals in the

Low-dose spinal anaesthesia provides effective labour analgesia ...

African Journals Online (AJOL)

Intrathecal analgesia did not severely limit ambulation in any of the patients. ... access to epidural analgesia during labour is limited in low- resource ... world.5,6 With limited resources for epidural analgesia, spinal analgesia ... women.19,20.

Differences in maternal temperature during labour with remifentanil patient-controlled analgesia or epidural analgesia: a randomised controlled trial

NARCIS (Netherlands)

Douma, M.R.; Stienstra, R.; Middeldorp, J.M.; Arbous, M.S.; Dahan, A

2015-01-01

BACKGROUND: Epidural analgesia and remifentanil patient-controlled analgesia are two popular techniques for the treatment of labour pain, each with its own efficacy and toxicity. METHODS: Parturients requesting analgesia were randomly assigned to either patient-controlled intravenous remifentanil or

Patient-controlled analgesia : therapeutic interventions using transdermal electro-activated and electro-modulated drug delivery

NARCIS (Netherlands)

Indermun, S.; Choonara, Y.E.; Kumar, P.; Du Toit, L.C.; Modi, G.; Luttge, R.; Pillay, V.

2014-01-01

Chronic pain poses a major concern to modern medicine and is frequently undertreated, causing suffering and disability. Patient-controlled analgesia, although successful, does have limitations. Transdermal delivery is the pivot to which analgesic research in drug delivery has centralized, especially

Evaluation of the noradrenergic pathway and alpha-2 and beta-receptors in the modulation of the analgesia induced by transcutaneous electric nerve stimulation of high and low frequencies

OpenAIRE

Vasconcellos, Thiago Henrique Ferreira; Pantaleão, Patricia de Fátima; Teixeira, Dulcinéa Gonçalves; Santos, Ana Paula; Ferreira, Célio Marcos dos Reis

2014-01-01

Transcutaneous electric nerve stimulation is a noninvasive method used in clinical Physiotherapy to control acute or chronic pain. Different theories have been proposed to explain the mechanism of the analgesic action of transcutaneous electric nerve stimulation, as the participation of central and peripheral neurotransmitters. The aim of this study was to evaluate the involvement of noradrenergic pathway and of the receptors alfa-2 and beta in the modulation of analgesia produced by transcut...

Patient controlled analgesia with remifentanil versus epidural analgesia in labour: randomised multicentre equivalence trial

NARCIS (Netherlands)

Freeman, Liv M.; Bloemenkamp, Kitty W.; Franssen, Maureen T.; Papatsonis, Dimitri N.; Hajenius, Petra J.; Hollmann, Markus W.; Woiski, Mallory D.; Porath, Martina; van den Berg, Hans J.; van Beek, Erik; Borchert, Odette W. H. M.; Schuitemaker, Nico; Sikkema, J. Marko; Kuipers, A. H. M.; Logtenberg, Sabine L. M.; van der Salm, Paulien C. M.; Oude Rengerink, Katrien; Lopriore, Enrico; van den Akker-van Marle, M. Elske; le Cessie, Saskia; van Lith, Jan M.; Struys, Michel M.; Mol, Ben Willem J.; Dahan, Albert; Middeldorp, Johanna M.

2015-01-01

To determine women's satisfaction with pain relief using patient controlled analgesia with remifentanil compared with epidural analgesia during labour. Multicentre randomised controlled equivalence trial. 15 hospitals in the Netherlands. Women with an intermediate to high obstetric risk with an

Post-caesarean analgesia: What is new?

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Sukhyanti Kerai

2017-01-01

Full Text Available Adequate post-operative analgesia after caesarean section (CS is vital as it impacts the distinct surgical recovery requirements of the parturient. Although newer analgesic modalities and drugs for post-caesarean analgesia have been introduced over the recent years, review of the literature suggests suggests that we are far from achieving the goals of optimum post-operative analgesia. We conducted a systematic review of recent advances in modalities for post-caesarean analgesia. After systematic search and quality assessment of studies, we included a total of 51 randomised controlled trials that evaluated the role of opioids, transversus abdominis plane (TAP block, wound infiltration/infusion, ketamine, gabapentin and ilioinguinal-iliohypogastric nerve block (II-IH NB for post-caesarean analgesia. Administration of opioids still remains the gold standard for post-operative analgesia, but the associated troublesome side effects have led to the mandatory incorporation of non-opioid analgesics in post-CS analgesia regime. Among the non-opioid techniques, TAP block is the most investigated modality of the last decade. The analgesic efficacy of TAP block as a part of multimodal analgesia is established in post-CS cases where intrathecal morphine is not employed and in CS under general anaesthesia. Among non-steroidal anti-inflammatory drugs, COX-I inhibitors and intravenous paracetamol are found to be useful in post-operative analgesic regimen. The perioperative use of ketamine is found useful only in CS done under spinal anaesthesia; no benefit is seen where general anaesthesia is employed. Wound infiltration with local anaesthetics, systemic gabapentin and II-IH NB need further trials to assess their efficacy.

Measurement of event-related potentials and placebo

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Sovilj Platon

2014-01-01

Full Text Available ERP is common abbreviation for event-related brain potentials, which are measured and used in clinical practice as well as in research practice. Contemporary studies of placebo effect are often based on functional neuromagnetic resonance (fMRI, positron emission tomography (PET, and event related potentials (ERP. This paper considers an ERP instrumentation system used in experimental researches of placebo effect. This instrumentation system can be divided into four modules: electrodes and cables, conditioning module, digital measurement module, and PC module for stimulations, presentations, acquisition and data processing. The experimental oddball paradigm is supported by the software of the instrumentation. [Projekat Ministarstva nauke Republike Srbije, br. TR32019 and Provincial Secretariat for Science and Technological Development of Autonomous Province of Vojvodina (Republic of Serbia under research grant No. 114-451-2723

Effect of local infiltration analgesia on post-operative pain following TVT-O: a double-blind, placebo-controlled randomized study.

Science.gov (United States)

Tommaselli, Giovanni A; Di Carlo, Costantino; Formisano, Carmen; Fabozzi, Annamaria; Nappi, Carmine

2014-08-01

To evaluate the effect of a protocol of local anesthesia and epinephrine associated with sedo-analgesia on post-TVT-O pain in comparison with infiltration of saline and epinephrine. Forty-two patients undergoing TVT-O were randomized into two groups to receive periurethral infiltration with epinephrine only (group A, n = 21) or with epinephrine plus 1 % lidocaine hydrochloride (group B, n = 21). Post-operative pain was assessed using a visual analog scale (VAS) from 0 (absence of pain) to 10 (maximum pain possible), 1, 6, 12 and 24 h after the procedure. The total amount of analgesia was recorded and the proportion of women reporting a pain VAS score ≥4, 1 h after the procedure was calculated. ANOVA for repeated measures and Bonferroni correction, the Student's t test for independent samples, the Mann-Whitney U test, the Fisher exact test, or the χ (2) test for parametric was used. Pain level was significantly lower in group B 1 (p = 0.01) and 6 h (p = 0.05) after surgery, but not 12 and 24 h after the procedure. No significant difference was observed in the proportion of women requesting analgesia and in the total dosage of analgesics between the two groups. A significant higher proportion of women in group A reported a pain VAS score higher than four 1 h after surgery in comparison with patients in group B. This randomized study seems to indicate that systematic infiltration before TVT-O positioning with local anesthetic may reduce immediate post-operative pain.

The Use of Ketamine for Acute Treatment of Pain: A Randomized, Double-Blind, Placebo-Controlled Trial.

Science.gov (United States)

Sin, Billy; Tatunchak, Tamara; Paryavi, Mohammad; Olivo, Maria; Mian, Usman; Ruiz, Josel; Shah, Bupendra; de Souza, Sylvie

2017-05-01

Pain is one of the most common reasons for emergency department (ED) visits in the United States. Ketamine is a sedative with N-methyl-D-aspartate (NMDA) receptor antagonism. Recent literature has suggested that the use of subdissociative dose ketamine (SDDK) may be safe and effective for acute pain. The objective of our study was to evaluate ketamine in subdissociative doses as an adjunct for acute pain in the ED. This was a single-center, prospective, randomized, double-blind, placebo-controlled trial that evaluated the use of SDDK in adult patients who presented to the ED with acute pain. Patients received ketamine 0.3 mg/kg via intravenous piggyback over 15 min or placebo. Morphine 0.1 mg/kg intravenous push was administered with the study interventions. The primary outcome was the patient's pain score 15 min after initiation of the intervention. Secondary outcomes included adverse events, consumption of rescue analgesia, patient's length of stay, and patient satisfaction with treatment. Thirty patients were enrolled in each group. Median pain scores in patients who received ketamine were lower than in controls at 15 min (3.5 [interquartile range {IQR} 1.0-7.3 vs. 6.0 [IQR 4.0-9.0], respectively; p = 0.018). No serious adverse events occurred. No difference was detected in the amount of rescue analgesia used or in length of stay. Patients who received ketamine reported a higher mean satisfaction score with their pain management (8.57 [standard deviation {SD} 2.1]) than patients who received placebo (6.05 [SD 2.6]; p = 0.01). When used as an adjunct, SDDK administered at 0.3 mg/kg over 15 min resulted in safe and effective analgesia for ≤30 min in patients who presented with acute pain in the ED. Copyright © 2017 Elsevier Inc. All rights reserved.

Intravenous Magnesium Sulphate for Analgesia after Caesarean Section: A Systematic Review

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Andrew McKeown

2017-01-01

Full Text Available Objective. To summarise the evidence for use of intravenous magnesium for analgesic effect in caesarean section patients. Background. Postcaesarean pain requires effective analgesia. Magnesium, an N-methyl-D-aspartate receptor antagonist and calcium-channel blocker, has previously been investigated for its analgesic properties. Methods. A systematic search was conducted of PubMed, Scopus, MEDLINE, Cochrane Library, and Google Scholar databases for randomised-control trials comparing intravenous magnesium to placebo with analgesic outcomes in caesarean patients. Results. Ten trials met inclusion criteria. Seven were qualitatively compared after exclusion of three for unclear bias risk. Four trials were conducted with general anaesthesia, while three utilised neuraxial anaesthesia. Five of seven trials resulted in decreased analgesic requirement postoperatively and four of seven resulted in lower serial visual analogue scale scores. Conclusions. Adjunct analgesic agents are utilised to improve analgesic outcomes and minimise opioid side effects. Preoperative intravenous magnesium may decrease total postcaesarean rescue analgesia consumption with few side effects; however, small sample size and heterogeneity of methodology in included trials restricts the ability to draw strong conclusions. Therefore, given the apparent safety and efficacy of magnesium, its role as an adjunct analgesic in caesarean section patients should be further investigated with the most current anaesthetic techniques.

[Development of an Analgesia Therapy System for Delivery Based on Bio-feedback Transcuataneous Electrical Nerve Stimulation].

Science.gov (United States)

Deng Songbo; Lu Yaosheng; Fang, Kun; Qin, Ruyi; Lin, Zhan

2015-06-01

Transcuataneous electrical nerve stimulation (TENS) analgesia as a non-drug method has received people's more and more attention recently. Considering problems of existing products, such as unstable performance and unsatisfied effectiveness, we developed a new analgesia therapy system for delivery based on bio-feedback TENS in our laboratory. We proposed a new idea for stimulation signal design, that is, we modulated a middle frequency signal by a traditional low frequency TENS wave in the new system. We designed different prescription waves for pain relief during a uterine contraction or massage between contractions. In the end, a bio-feedback TENS method was proposed, in which the waveforms of stimulation signals were selected and their parameters were modified automatically based on feedback from uterine pressure, etc. It was proved through quality tests and clinical trials that the system had good performance and satisfied analgesia effectiveness.

Epidural analgesia, neonatal care and breastfeeding.

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Zuppa, Antonio Alberto; Alighieri, Giovanni; Riccardi, Riccardo; Cavani, Maria; Iafisco, Alma; Cota, Francesco; Romagnoli, Costantino

2014-11-29

The objective of our study is to evaluate the correlation between epidural analgesia during labor, start of breastfeeding and type of maternal-neonatal care.Two different assistance models were considered: Partial and Full Rooming-in.In this cohort study, 2480 healthy infants were enrolled, 1519 in the Partial Rooming-in group and 1321 in the Full Rooming-in group; 1223 were born to women subjected to epidural analgesia in labor.In case of Partial Rooming-in the rate of exclusive or prevailing breastfeeding is significant more frequent in newborns born to mothers who didn't receive analgesia. Instead, in case of Full Rooming-in the rate of exclusive or prevailing breastfeeding is almost the same and there's no correlation between the use or not of epidural analgesia.The good start of lactation and the success of breastfeeding seems to be guaranteed by the type of care offered to the couple mother-infant, that reverses any possible adverse effects of the use of epidural analgesia in labor.

Schisandra chinensis fruit modulates the gut microbiota composition in association with metabolic markers in obese women: a randomized, double-blind placebo-controlled study.

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Song, Mi-young; Wang, Jing-hua; Eom, Taewoong; Kim, Hojun

2015-08-01

Schisandra chinensis fruit (SCF) is known to have beneficial effects on metabolic diseases, including obesity, and to affect gut microbiota in in vivo studies. However, in human research, there have been a few studies in terms of its clinical roles in lipid metabolism and modulation of gut microbiota. A double-blind, placebo-controlled study with 28 obese women with SCF or placebo was conducted for 12 weeks. Anthropometry and blood and fecal sampling were performed before and after treatment. Analysis of the gut microbiota in feces was performed using denaturing gradient gel electrophoresis and quantitative polymerase chain reaction. Although the values did not differ significantly between the 2 groups, the SCF group tended to show a greater decrease in waist circumference, fat mass, fasting blood glucose, triglycerides, aspartate aminotransferase, and alanine aminotransferase than the placebo group. Clustering of the denaturing gradient gel electrophoresis fingerprints for total bacteria before and after treatment indicated more separate clustering in SCF group than placebo. In correlation analysis, Bacteroides and Bacteroidetes (both increased by SCF) showed significant negative correlation with fat mass, aspartate aminotransferase, and/or alanine aminotransferase, respectively. Ruminococcus (decreased by SCF) showed negative correlation with high-density lipoprotein cholesterol and fasting blood glucose. In conclusion, administration of SCF for 12 weeks resulted in modulation of the gut microbiota composition in Korean obese women, and significant correlations with some bacterial genera and metabolic parameters were noted. However, in general, SCF was not sufficient to induce significant changes in obesity-related parameters compared with placebo. Copyright © 2015 Elsevier Inc. All rights reserved.

Evaluation of the effect of transdermal nitroglycerine patch on intrathecal dexmedetomidine as additive, on postoperative analgesia after abdominal hysterectomy

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Rama Chatterji

2017-01-01

Full Text Available Aim: The aim of this study is to evaluate the effect of transdermal nitroglycerin on intrathecal dexmedetomidine as additive, on postoperative analgesia after abdominal hysterectomy. Materials and Methods: Totally 140 patients of the American Society of Anesthesiologists Grade I or II, posted for abdominal hysterectomy under spinal anesthesia, were randomized to four groups using computer-generated random number list. Group B received 3 ml of 0.5% hyperbaric bupivacaine with 0.5 ml normal saline and placebo patch, Group BN received 3 ml of 0.5% hyperbaric bupivacaine with 0.5 ml NS and transdermal nitroglycerin (t-NTG, Group BD received 3 ml of 0.5% hyperbaric bupivacaine with 5 mcg (0.5 ml dexmedetomidine and placebo patch and Group BDN received 3 ml of 0.5% hyperbaric bupivacaine with 5 μg (0.5 ml dexmedetomidine and t-NTG patch. Outcomes measured include the total duration of analgesia, onset, and duration of sensory and motor block and any adverse effects. Results: The total duration of analgesia was longest in Group BDN (349.9 ± 40.6 min. It was significantly longer than Group BD (252.3 ± 34.0 min and Group B and BN (130.5 ± 18.8, 138.3 ± 19.2 min. Time taken for two segment regression was comparable in Group B (79.9 ± 14.4 min and Group BN (87.1 ± 22.6 min, but it was significantly longer in Group BD (122.5 ± 17.2 min and Group BDN (136.4 ± 25.5 min. There was no significant difference in other variables between the groups. Conclusion: Transdermal nitroglycerine itself does not exhibit any analgesic potential of its own but, it enhances the analgesic potential of intrathecal dexmedetomidine.

Rabbit analgesia.

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Barter, Linda S

2011-01-01

With the increasing popularity of rabbits as household pets, the complexity of diagnostic and surgical procedures performed on rabbits is increasing, along with the frequency of routine surgical procedures. More practitioners are faced with the need to provide adequate analgesia for this species. Preemptive analgesia prior to planned surgical interventions may reduce nervous system changes in response to noxious input, as well as reduce postoperative pain levels and analgesic drug requirements. Concurrent administration of analgesic drugs to anesthetized rabbits undergoing painful procedures is warranted both pre- and intraoperatively as well as postoperatively. This article discusses the neuropharmacologic and pharmacologic aspects of pain in rabbits, and reviews current protocols for the use of analgesic drugs. Published by Elsevier Inc.

Evaluation of the effect of gabapentin on postoperative analgesia with epidural morphine after abdominal hysterectomy

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Diptesh Aryal

2017-07-01

Full Text Available Background & Objectives: Gabapentin has been used successfully as a non-opioid analgesic adjuvant for postoperative pain management. We hypothesized that the preoperative use of gabapentin prolonged the analgesic effect of epidural morphine without an increase in adverse effects of morphine. Materials & Methods: In a randomized, double blind study sixty ASA PS I and II patients undergoing abdominal hysterectomy were assigned to receive either placebo or gabapentin 1200mg 1 hour before surgery. Postoperatively, 0.125% bupivacaine with morphine 50 µg per kg body weight was used for epidural analgesia. Vital parameters, time to the first request for analgesic, visual analogue scale scoring for pain at rest and during movement, 24-hour morphine consumption, and side effects were studied.Results: The patients were comparable with respect to age, weight, ASA PS, baseline hemodynamic parameters and duration of surgery. Gabapentin significantly decreased the duration of analgesia compared to placebo (1078.26 min Vs. 303.5 min; P value <0.0001. The VAS scores at rest and during movement at 1, 2, 4, 8, 12, and 24h were significantly lower in gabapentin group. The total amount of morphine consumption in 24 h postoperatively was significantly lower in gabapentin group (1.93mg Vs. 6.30mg; P value <0.0001. The incidence of nausea and pruritus was significantly lower with gabapentin. Conclusion: Oral gabapentin 1200 mg as a premedication decreases the dose requirement of epidural morphine and postoperative pain after total abdominal hysterectomy. It also decreases the pain scores at rest and during movement significantly. 

Epidural Analgesia in the Postoperative Period

National Research Council Canada - National Science Library

Mathsen, Curtis

2001-01-01

.... This descriptive study was conducted to determine which surgical patients experienced the most analgesia with the fewest side effects when receiving epidural analgesia in the postoperative period...

Labor epidural analgesia: Past, present and future

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Reena

2014-01-01

Full Text Available One of the most severe pains experienced by a woman is that of childbirth. Providing analgesia for labor has always been a challenge more so because of the myths and controversies surrounding labor. It is imperative to understand the pain transmission during various stages of labor in order to select a proper technique for providing labor analgesia. The adverse effects of labor pain are numerous and affect both the mother as well as the fetus. Currently lumbar epidural is considered to be the gold standard technique for labor analgesia. Local anaesthetics like bupivacaine and ropivacaine are commonly used and adjuvants like clonidine, fentanyl and neostigmine have been extensively studied. However, despite being so popular, epidural analgesia is not without complications, with hypotension being the most common. Other complications include accidental dural puncture, infection, intravascular placement, high block and epidural hematoma. Other neuraxial techniques include continuous caudal analgesia, and combined spinal epidural analgesia. The numerous studies investigating the various aspects of this method have also served to dispel various myths surrounding epidural analgesia like increased incidence of cesarean section and instrumental delivery, prolongation of labor and future back pain. The future of labor analgesia lies in the incorporation of ultrasound in identifying the epidural space helping in proper catheter placement. The keywords "labor epidural" in the PUBMED revealed a total of 5018 articles with 574 review articles and 969 clinical trials. The relevant articles along with their references were extensively studied.

Comparison between paracetamol, piroxicam, their combination, and placebo in postoperative pain management of upper limb orthopedic surgery (a randomized double blind clinical trial

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Gholamreza Khalili

2016-01-01

Conclusion: IV infusion of 15 mg/kg Paracetamol used as a preventive may provide effective analgesia in comparison with IM 0.4 mg/kg Piroxicam or placebo. Addition of Piroxicam to Paracetamol has not much more benefit than Paracetamol alone, in reducing pain after upper limb orthopedic surgery.

Multi-modal-analgesia for pain management after Hallux Valgus surgery: a prospective randomised study on the effect of ankle block

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Rolf Christer

2007-12-01

Full Text Available Abstract Background Pain and emesis are the two major complaints after day case surgery. Local anaesthesia has become an important part of optimizing intra and post-operative pain treatment, but is sometimes not entirely sufficient. The aim of the present study was to study the effect of adding an ankle block to a multi-modal analgesic approach on the first 24-hour-need for rescue analgesia in patients undergoing elective Hallux Valgus surgery. Type of study Prospective, randomized patient-blind study comparing ankle block with levo-bupivacaine, lidocaine and Saline placebo control. Methods Ninety patients were studied comparing ankle block (15 cc using levo-bupivacaine 2.5 mg/ml, lidocaine 10 mg/ml or placebo (saline on day-case elective Hallux Valgus surgery, supported by general anaesthesia in all cases. Primary study endpoint was number of patient's requiring oral analgesics during the first 24 post-operative hours. Results Ankle block had no effect on need for rescue analgesia and pain ratings during the 1st 24 postoperative hours, there was no difference seen between placebo and any of the two active local anaesthesia studied. The only differences seen was that both lidocaine and levo-bupivacaine reduced the intra-operative need for anaesthetic (sevoflurane and that levo-bupivacaine patients had a lower need as compared to the lidocaine patients for oral analgesics during the afternoon of surgery. Conclusion Adding a single shot ankle block to a multi-modal pain management strategy reduces the need for intra-operative anaesthesia but has no major impact of need of rescue analgesics or pain during the first 24-hour after surgery.

Relationship between Personality Traits and Endogenous Analgesia: The Role of Harm Avoidance.

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Nahman-Averbuch, Hadas; Yarnitsky, David; Sprecher, Elliot; Granovsky, Yelena; Granot, Michal

2016-01-01

Whether psychological factors such as anxiety and pain catastrophizing levels influence the expression of endogenous analgesia in general and, more specifically, the conditioned pain modulation (CPM) response is still under debate. It may be assumed that other psychological characteristics also play a role in the CPM response. The neurotransmitters serotonin, dopamine, and norepinephrine are involved both in CPM, as well as personality traits such as harm avoidance (HA), novelty seeking (NS), and reward dependence (RD), which can be obtained by the Tridimensional Personality Questionnaire (TPQ). However, the associations between these traits (HA, NS, and RD) with endogenous analgesia revealed by CPM have not yet been explored. Healthy middle-age subjects (n = 28) completed the TPQ, Spielberger's State Anxiety Inventory, and the Pain Catastrophizing Scale and were assessed for CPM paradigms using thermal phasic temporal summation as the "test stimulus" and hand immersion into hot water bath (CPM water) or contact heat (CPM contact) for "conditioning stimulus." Higher levels of HA were associated with less-efficient CPM responses obtained by both paradigms: CPM water (r = 0.418, P = 0.027) and CPM contact (r = 0.374, P = 0.050). However, NS and RD were not associated with the other measurements. No significant relationship was observed between state anxiety and pain catastrophizing levels and the CPM responses. The relationship between the capacity of endogenous analgesia and the tendency to avoid aversive experience can be explained by mutual mechanisms involving similar neurotransmitters or brain areas. These findings illuminate the key role of harm avoidance obtained by the TPQ in determining the characteristics of pain modulation profile. © 2014 World Institute of Pain.

Labor analgesia: An update on the effect of epidural analgesia on labor outcome

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Samina Ismail

2013-01-01

Full Text Available Following the introduction of epidural for labor analgesia, debate has centered on the issue of its effect on outcome of labor; in terms of length of labor and increase in the rate of instrumental vaginal delivery and cesarean section (CS. There is no ideal study on the effect of epidural analgesia (EA on the outcome of labor due to logistic problems in randomization, blinding and getting a control group; as a result these queries are partly answered. Despite these problems, it has been established that labor epidural has minimal effect on progress of established labor and maternal request should be a sufficient indication to start an epidural. Although instrumental vaginal delivery is probably increased with epidural but obstetrician practice, pain free patient and teaching opportunity are likely factors increasing the incidence. Maternal-fetal factors and obstetric management and not the use of EA are the most important determinants of the CS rate. The purpose of this review is to summarize data from controlled trials addressing the question of whether neuraxial labor analgesia causes an increased risk of CS or rate of instrumental delivery. In addition, the review discusses whether the timing of initiation of analgesia infl uences the mode of delivery.

The improved quality of postoperative analgesia after intrathecal morphine does not result in improved recovery and quality of life in the first 6 months after orthopedic surgery: a randomized controlled pilot study

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Foadi N

2017-05-01

Full Text Available Nilufar Foadi,1,* Matthias Karst,1,* Anika Frese-Gaul,2 Niels Rahe-Meyer,3 Stefan Krömer,1 Christian Weilbach 4 1Department of Anesthesiology and Intensive Care Medicine, Pain Clinic, Hannover Medical School, Hannover, 2Department of Psychosomatic Medicine, AHG Psychosomatische Klinik Bad Pyrmont, Bad Pyrmont, 3Department of Anesthesiology and Operative Intensive Care Medicine, Franziskus Hospital, Bielefeld, 4Department of Anesthesiology, Intensive Care Medicine, Emergency Medicine and Pain Medicine, St. Josefs‑Hospital Cloppenburg, Cloppenburg, Germany *These authors contributed equally to this work Objective: In orthopedic surgery, it is well known that the use of intrathecal morphine (ITM leads to an improved quality of postoperative analgesia. Little is known how this improved analgesia affects the long-term course after surgery.Study design: A randomized, double-blind trial.Setting: Academic medical center.Subjects: Forty-nine patients undergoing total hip or knee replacement surgery in spinal anesthesia.Methods: Patients were randomly assigned to receive either 0.1 mg (n=16 or 0.2 mg (n=16 morphine sulfate intrathecally or physiological saline (n=17 added to 3 mL 0.5% isobaric bupivacaine for spinal anesthesia. As a function of the quality of the short-term postoperative analgesia, the effect on recovery and quality of life was evaluated at various time points up to 26 weeks after surgery.Results: In both ITM groups, the additionally required postoperative systemic morphine dose was significantly reduced compared with the placebo group (P=0.004. One week after operation, patients with ITM reported significantly less pain at rest (P=0.01 compared to the placebo group. At discharge, in comparison with the 0.1 mg ITM and placebo group, the 0.2 mg ITM group showed a higher degree of impairment regarding pain, stiffness, and physical function of the respective joint (P=0.02. Over the further follow-up period of 6 months after surgery

OUR EXPERIENCE WITH EPIDURAL LABOUR ANALGESIA

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Uršula Reš Muravec

2003-12-01

Full Text Available Background. To evaluate the effects of regional labour analgesia used at the Hospital for Gynecology and Obstetrics in Postojna, Slovenia, in the year 2002.Patients and methods. In this retrospective study we enrolled 294 parturients who delivered in the year 2002 in the Postojna Maternity Hospital: in group 1 there were 147 parturients in whom three different regional analgesic techniques (study group were used at labour; in group 2 there were 147 parturients in whom regional analgesia was not used (control group. In the first step the two groups were compared in terms of maternal demographic data, duration and outcome of labour and 1' and 5' Apgar scores. In the second step the three regional analgesic groups were compared in terms of the course and outcome of labour, fetal condition, side and adverse effects of regional analgesic techniques, and patient satisfaction with a particular analgesic technique.Results. Regional labour analgesia was used in 147 (14% of the 1048 women who delivered in 2002: epidural analgesia (EPI was performed in 51.0%, combined spinal-epidural (CSE in 42.2% and spinal analgesia (SA in 6.8% of cases. The women in the regional analgesia group were significantly older, more educated, more often nulliparous and accompanied by their partner at labour than the women in the control group. Further, the duration of labour was significantly longer, oxytocin more frequently administered than in the control group. In terms of labour outcome there were no differences in the Cesarean section rates and 1- and 5-min Apgar scores minutes, but and the vacuum extraction rate was significantly higher in the regional analgesia group. Among the three regional analgesia techniques used, there were no statistically significant differences observed in terms of labour duration and outcome, and Apgar scores. The patient satisfaction was greatest with CSE. Adverse side effects such as weak muscles, reduced motion abilities, itching, nausea

In patients undergoing fast track total knee arthroplasty, addition of buprenorphine to a femoral nerve block has no clinical advantage A prospective, double-blinded, randomized, placebo controlled trial

NARCIS (Netherlands)

van Beek, Rienk; Zonneveldt, Harry J.; van der Ploeg, Tjeerd; Steens, Jeroen; Lirk, Phillip; Hollmann, Marcus W.

2017-01-01

Background: Several adjuvants have been proposed to prolong the effect of peripheral nerve blocks, one of which is buprenorphine. In this randomized double blinded placebo controlled trial we studied whether the addition of buprenorphine to a femoral nerve block prolongs analgesia in patients

Activation of Brainstem Pro-opiomelanocortin Neurons Produces Opioidergic Analgesia, Bradycardia and Bradypnoea.

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Cerritelli, Serena; Hirschberg, Stefan; Hill, Rob; Balthasar, Nina; Pickering, Anthony E

2016-01-01

Opioids are widely used medicinally as analgesics and abused for hedonic effects, actions that are each complicated by substantial risks such as cardiorespiratory depression. These drugs mimic peptides such as β-endorphin, which has a key role in endogenous analgesia. The β-endorphin in the central nervous system originates from pro-opiomelanocortin (POMC) neurons in the arcuate nucleus and nucleus of the solitary tract (NTS). Relatively little is known about the NTSPOMC neurons but their position within the sensory nucleus of the vagus led us to test the hypothesis that they play a role in modulation of cardiorespiratory and nociceptive control. The NTSPOMC neurons were targeted using viral vectors in a POMC-Cre mouse line to express either opto-genetic (channelrhodopsin-2) or chemo-genetic (Pharmacologically Selective Actuator Modules). Opto-genetic activation of the NTSPOMC neurons in the working heart brainstem preparation (n = 21) evoked a reliable, titratable and time-locked respiratory inhibition (120% increase in inter-breath interval) with a bradycardia (125±26 beats per minute) and augmented respiratory sinus arrhythmia (58% increase). Chemo-genetic activation of NTSPOMC neurons in vivo was anti-nociceptive in the tail flick assay (latency increased by 126±65%, pneurons were found to project to key brainstem structures involved in cardiorespiratory control (nucleus ambiguus and ventral respiratory group) and endogenous analgesia (periaqueductal gray and midline raphe). Thus the NTSPOMC neurons may be capable of tuning behaviour by an opioidergic modulation of nociceptive, respiratory and cardiac control.

Intravenous lidocaine for postmastectomy pain treatment: randomized, blind, placebo controlled clinical trial

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Tania Cursino de Menezes Couceiro

2015-06-01

Full Text Available BACKGROUND AND OBJECTIVE: Postoperative pain treatment in mastectomy remains a major challenge despite the multimodal approach. The aim of this study was to investigate the analgesic effect of intravenous lidocaine in patients undergoing mastectomy, as well as the postoperative consumption of opioids. METHODS: After approval by the Human Research Ethics Committee of the Instituto de Medicina Integral Prof. Fernando Figueira in Recife, Pernambuco, a randomized, blind, controlled trial was conducted with intravenous lidocaine at a dose of 3 mg/kg infused over 1 h in 45 women undergoing mastectomy under general anesthesia. One patient from placebo group was. RESULTS: Groups were similar in age, body mass index, type of surgery, and postoperative need for opioids. Two of 22 patients in lidocaine group and three of 22 patients in placebo group requested opioid (p = 0.50. Pain on awakening was identified in 4/22 of lidocaine group and 5/22 of placebo group (p = 0.50; in the post-anesthetic recovery room in 14/22 and 12/22 (p = 0.37 of lidocaine and placebo groups, respectively. Pain evaluation 24 h after surgery showed that 2/22 and 3/22 patients (p = 0.50 of lidocaine and placebo groups, respectively, complained of pain. CONCLUSION: Intravenous lidocaine at a dose of 3 mg/kg administered over a period of an hour during mastectomy did not promote additional analgesia compared to placebo in the first 24 h, and has not decreased opioid consumption. However, a beneficial effect of intravenous lidocaine in selected and/or other therapeutic regimens patients cannot be ruled out.

Analgesia induced by repeated exposure to low dose X-rays in mice, and involvement of the accessory olfactory system in modulation of the radiation effects

International Nuclear Information System (INIS)

Miyachi, Yukihisa; Yamada, Takeshi

1997-01-01

The effects of low-dose X-rays on mouse nociceptive behavior were examined using a formalin injected test which rated the amount of time the animals spent licking the injected hind-paw. Male ICR White Swiss mice showed a marked suppression of licking behavior after repeated low-dose X-irradiation (5 cGy/day, 6 consecutive days). The most profound effect was observed on the day 30 after irradiation. The decline of licking behavior, however, was not observed at all following olfactory bulbectomy or vomeronasal tract cut. The analgesic effects could be observed in writhing animals administered acetic-acid intraperitoneally. Moreover, analgesia was totally blocked by the administration of N-nitro-L-arginine, a nitric oxide synthase inhibitor, to accessory olfactory bulbs prior to the exposure. The present results indicate that the olfactory system plays an important role in modulation of radiation-induced analgesia, and a possible involvement of nitric oxide in the formation of recognition memory subjected to repeated X-rays. Relatively higher doses (5 cGy x 9 days, 5 cGy x 12 days), however, did not induce such effects, namely, the decline of nociceptive response was limited to the animals irradiated with the smaller dose. (author)

Patient-controlled analgesia: therapeutic interventions using transdermal electro-activated and electro-modulated drug delivery.

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Indermun, Sunaina; Choonara, Yahya E; Kumar, Pradeep; Du Toit, Lisa C; Modi, Girish; Luttge, Regina; Pillay, Viness

2014-02-01

Chronic pain poses a major concern to modern medicine and is frequently undertreated, causing suffering and disability. Patient-controlled analgesia, although successful, does have limitations. Transdermal delivery is the pivot to which analgesic research in drug delivery has centralized, especially with the confines of needle phobias and associated pain related to traditional injections, and the existing limitations associated with oral drug delivery. Highlighted within is the possibility of further developing transdermal drug delivery for chronic pain treatment using iontophoresis-based microneedle array patches. A concerted effort was made to review critically all available therapies designed for the treatment of chronic pain. The drug delivery systems developed for this purpose and nondrug routes are elaborated on, in a systematic manner. Recent developments and future goals in transdermal delivery as a means to overcome the individual limitations of the aforementioned delivery routes are represented as well. The approval of patch-like devices that contain both the microelectronic-processing mechanism and the active medicament in a small portable device is still awaited by the pharmaceutical industry. This anticipated platform may provide transdermal electro-activated and electro-modulated drug delivery systems a feasible attempt in chronic pain treatment. Iontophoresis has been proven an effective mode used to administer ionized drugs in physiotherapeutic, diagnostic, and dermatological applications and may be an encouraging probability for the development of devices and aids in the treatment of chronic pain. © 2013 Wiley Periodicals, Inc. and the American Pharmacists Association.

Comparison of Transversus Abdominis Plane Infiltration with Liposomal Bupivacaine versus Continuous Epidural Analgesia versus Intravenous Opioid Analgesia.

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Ayad, Sabry; Babazade, Rovnat; Elsharkawy, Hesham; Nadar, Vinayak; Lokhande, Chetan; Makarova, Natalya; Khanna, Rashi; Sessler, Daniel I; Turan, Alparslan

2016-01-01

Epidural analgesia is considered the standard of care but cannot be provided to all patients Liposomal bupivacaine has been approved for field blocks such as transversus abdominis plane (TAP) blocks but has not been clinically compared against other modalities. In this retrospective propensity matched cohort study we thus tested the primary hypothesis that TAP infiltration are noninferior (not worse) to continuous epidural analgesia and superior (better) to intravenous opioid analgesia in patients recovering from major lower abdominal surgery. 318 patients were propensity matched on 18 potential factors among three groups (106 per group): 1) TAP infiltration with bupivacaine liposome; 2) continuous Epidural analgesia with plain bupivacaine; and; 3) intravenous patient-controlled analgesia (IV PCA). We claimed TAP noninferior (not worse) over Epidural if TAP was noninferior (not worse) on total morphine-equivalent opioid and time-weighted average pain score (10-point scale) within first 72 hours after surgery with noninferiority deltas of 1 (10-point scale) for pain and an increase less of 20% in the mean morphine equivalent opioid consumption. We claimed TAP or Epidural groups superior (better) over IV PCA if TAP or Epidural was superior on opioid consumption and at least noninferior on pain outcome. Multivariable linear regressions within the propensity-matched cohorts were used to model total morphine-equivalent opioid dose and time-weighted average pain score within first 72 hours after surgery; joint hypothesis framework was used for formal testing. TAP infiltration were noninferior to Epidural on both primary outcomes (pconsumption (p = 0.37). We did not find noninferiority of Epidural over IV PCA on pain scores (P = 0.13) and nor did we find superiority on opioid consumption (P = 0.98). TAP infiltration with liposomal bupivacaine and continuous epidural analgesia were similar in terms of pain and opioid consumption, and not worse in pain compared with IV PCA

Registered nurses' and midwives' knowledge of epidural analgesia.

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Bird, Annette; Wallis, Marianne; Chaboyer, Wendy

2009-01-01

Despite epidural analgesia increasingly being utilized in hospitals, very little research-based evidence is available about registered nurses' (RNs) and midwives' knowledge of this technique. To describe the current epidural knowledge levels of RNs and midwives in a multi-site setting. RNs and midwives at four, regional teaching facilities completed an epidural knowledge test. The instrument included demographic items and five knowledge subscales relating to epidural analgesia: spinal cord anatomy and physiology; epidural pharmacology; complications of epidural analgesia; assessment of sensory and motor blockade and the general management of patients with epidural analgesia. A total of 408 (99.7% response) RNs and midwives completed the test. Respondents demonstrated good knowledge of sensory and motor blockade assessment and the general management of epidural analgesia subscales with correct responses to 75 and 77% of the questions in these subscales, respectively. Fair knowledge relating to the spinal cord anatomy and physiology subscale was demonstrated with 69% of the questions answered correctly. The knowledge subscales relating to epidural pharmacology (57% correct responses) and the complications of epidural analgesia (56% correct responses) were problematic for the sample. The research results provide generalizable information about what RNs and midwives know about epidural analgesia. These results are an important guide in the development of new and existing dedicated epidural education programs. The results also provide some direction for further research into this important topic.

High-volume infiltration analgesia in total knee arthroplasty: a randomized, double-blind, placebo-controlled trial

DEFF Research Database (Denmark)

Andersen, L.O.; Husted, H.; Otte, K.S.

2008-01-01

with a detailed description of the infiltration technique. METHODS: In a randomized, double-blind, placebo-controlled trial in 12 patients undergoing bilateral knee arthroplasty, saline or high-volume (170 ml) ropivacaine (0.2%) with epinephrine was infiltrated around each knee, with repeated doses administered...

Endogenous Pain Modulation: Association with Resting Heart Rate Variability and Negative Affectivity.

Science.gov (United States)

Van Den Houte, Maaike; Van Oudenhove, Lukas; Bogaerts, Katleen; Van Diest, Ilse; Van den Bergh, Omer

2017-07-21

Several chronic pain syndromes are characterized by deficient endogenous pain modulation as well as elevated negative affectivity and reduced resting heart rate variability. In order to elucidate the relationships between these characteristics, we investigated whether negative affectivity and heart rate variability are associated with endogenous pain modulation in a healthy population. An offset analgesia paradigm with noxious thermal stimulation calibrated to the individual's pain threshold was used to measure endogenous pain modulation magnitude in 63 healthy individuals. Pain ratings during constant noxious heat stimulation to the arm (15 seconds) were compared with ratings during noxious stimulation comprising a 1 °C rise and return of temperature to the initial level (offset trials, 15 seconds). Offset analgesia was defined as the reduction in pain following the 1 °C decrease relative to pain at the same time point during continuous heat stimulation. Evidence for an offset analgesia effect could only be found when noxious stimulation intensity (and, hence, the individual's pain threshold) was intermediate (46 °C or 47 °C). Offset analgesia magnitude was also moderated by resting heart rate variability: a small but significant offset effect was found in participants with high but not low heart rate variability. Negative affectivity was not related to offset analgesia magnitude. These results indicate that resting heart rate variability (HRV) is related to endogenous pain modulation (EPM) in a healthy population. Future research should focus on clarifying the causal relationship between HRV and EPM and chronic pain by using longitudinal study designs. © 2017 American Academy of Pain Medicine. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com

A randomized study of the effects of single-dose gabapentin versus placebo on postoperative pain and morphine consumption after mastectomy

DEFF Research Database (Denmark)

Dirks, Jesper; Fredensborg, Birgitte B; Christensen, Dennis

2002-01-01

BACKGROUND: The anticonvulsant gabapentin has proven effective for neuropathic pain in three large placebo-controlled clinical trials. Experimental and clinical studies have demonstrated antihyperalgesic effects in models involving central neuronal sensitization. It has been suggested that central...... neuronal sensitization may play an important role in postoperative pain. The aim of the study was to investigate the effect of gabapentin on morphine consumption and postoperative pain in patients undergoing radical mastectomy. METHODS: In a randomized, double-blind, placebo-controlled study, 70 patients...... received a single dose of oral gabapentin (1,200 mg) or placebo 1 h before surgery. Patients received patient-controlled analgesia with morphine at doses of 2.5 mg with a lock-out time of 10 min for 4 h postoperatively. Pain was assessed on a visual analog scale at rest and during movement, and side...

Successful practice of electroacupuncture analgesia in equine surgery.

Science.gov (United States)

Sheta, Eldessouky; Ragab, Safwat; Farghali, Haithem; El-Sherif, Asmaa

2015-02-01

Electroacupuncture analgesia was used for surgery in horses and donkeys. A KWD-808 electrical stimulator was used to incrementally induce a dense, dispersed wave output at frequencies from 20 to 55 Hz, which was maintained at a frequency of 55 Hz, and to change the amplitude of the wave to the best grading number for the suggested operation in each animal. Induction of analgesia lasted for 20-30 minutes, and the effect of analgesia was maintained for 20-45 minutes depending on the type of surgery performed. The exhibited clinical signs, physical examination data, and the responses of all animals were used for evaluating the periods of analgesia. Although the majority of the cases (95%) had no response to strong surgical pain, they experienced significant increases in heart rates and respiratory rates during induction. The lack of pain, relaxed surgical procedures, reduced intraoperative bleeding, and improved healing without complications were all definite benefits of using electroacupuncture analgesia in surgery. Thus, this study has provided surgical evidence supporting the effectiveness of electroacupuncture analgesia, as well as confirming its reliability, in the field of equine anesthesia and surgery. Copyright © 2015. Published by Elsevier B.V.

Placebo and Nocebo Effects in Sexual Medicine: An Experimental Approach.

Science.gov (United States)

Kruger, Tillmann H C; Grob, Carolin; de Boer, Claas; Peschel, Thomas; Hartmann, Uwe; Tenbergen, Gilian; Schedlowski, Manfred

2016-11-16

Few studies have investigated placebo and nocebo effects in a human sexuality context. Studying placebo and nocebo responses in this context may provide insight into their potential to modulate sexual drive and function. To examine such effects in sexual medicine, 48 healthy, male heterosexual participants were divided into four groups. Each group received instruction to expect stimulating effects, no effect, or an inhibitory effect on sexual functions. Only one group received the dopamine agonist cabergoline; all other groups received placebo or nocebo. Modulations in sexual experience were examined through an established experimental paradigm of sexual arousal and masturbation-induced orgasm during erotic film sequences with instruction to induce placebo or nocebo effects. Endocrine data, appetitive, consummatory, and refractory sexual behavior parameters were assessed using the Arizona Sexual Experience Scale (ASEX) and the Acute Sexual Experience Scale (ASES). Results showed increased levels of sexual function after administration of cabergoline with significant effects for several parameters. Placebo effects were induced only to a small degree. No negative effects on sexual parameters in the nocebo condition were noted. This paradigm could induce only small placebo and nocebo effects. This supports the view that healthy male sexual function seems relatively resistant to negative external influences.

Patient controlled remifentanil and epidural analgesia during labour : satisfaction, costs and safety

NARCIS (Netherlands)

Freeman, Liv

2016-01-01

Epidural analgesia provided superior analgesia to remifentanil PCA. Women randomised to epidural analgesia with a request for pain relief are more satisfied with their analgesia than women randomised to remifentanil PCA. Costs of epidural analgesia and remifentanil PCA are not significantly

Safety and efficacy of prolonged epidural analgesia after oncologic colorectal surgery

Directory of Open Access Journals (Sweden)

R. V. Garyaev

2012-01-01

Full Text Available This study demonstrates effective thoracic epidural analgesia by ropivacain 0.2 %, phentanyl 2 mkg/ml, adrenaline 2 mkg/ml in single-use infusion pumps in 124 patients, who underwent surgery for colorectal cancer. Safe, effective and controllable analgesia was observed during surgery and postoperative period. Prolonged analgesia facilitates early rehabilitation and improves gastrointestinal peristaltic activity.  Prolonged epidural analgesia is the recommended method of analgesia in this group of patients.

Pre-emptive analgesia: Recent trends and evidences

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Amiya K Mishra

2013-01-01

Full Text Available Preemptive analgesia, initiated before the surgical procedure to prevent pain in the early postoperative period has the potential to be more effective than a similar analgesic treatment initiated after surgery. This article aims to review all the recent published evidences that assess the efficacy of this enigmatic concept. Materials and Methods: We reviewed original research articles, case-reports, meta-analyses, randomized control trials (RCTs, and reviews based on pain physiology for preemptive analgesia from Medline, Medscape, and PubMed from 1993 to 2013. A broad free-text search in English was undertaken with major keywords "Preemptive analgesia," "postoperative pain," "preoperative," and "preincisional". Results: Review of publications showed that intravenous (IV nonsteroidal anti-inflammatory drugs (NSAIDs are quite effective when used alone, as well as with low dose iv ketamine, preemptively to provide adequate postoperative analgesia. However, ketamine has a doubtful role as a standalone agent. Preemptive administration of LA at the incision site reduces postoperative pain, but achieves an analgesic effect similar to that of postincisional anesthetic infiltration as does intraperitoneal administration. Preemptive epidural analgesia has proved its efficacy in controlling perioperative immune function and pain in comparison to parenteral opioids. Gamma-amino butyric acid (GABA analogues like gabapentin and pregabalin have great potential as preemptive analgesic with the added advantage of its anxiolytic effect. Conclusion: Multimodal approaches that address multiple sites along the pain pathway is necessary to treat pain adequately. However, we need to find an answer to the question of how to obtain the maximal clinical benefits with the use of preemptive analgesia.

Labour analgesia: Recent advances

Science.gov (United States)

Pandya, Sunil T

2010-01-01

Advances in the field of labour analgesia have tread a long journey from the days of ether and chloroform in 1847 to the present day practice of comprehensive programme of labour pain management using evidence-based medicine. Newer advances include introduction of newer techniques like combined spinal epidurals, low-dose epidurals facilitating ambulation, pharmacological advances like introduction of remifentanil for patient-controlled intravenous analgesia, introduction of newer local anaesthetics and adjuvants like ropivacaine, levobupivacaine, sufentanil, clonidine and neostigmine, use of inhalational agents like sevoflourane for patient-controlled inhalational analgesia using special vaporizers, all have revolutionized the practice of pain management in labouring parturients. Technological advances like use of ultrasound to localize epidural space in difficult cases minimizes failed epidurals and introduction of novel drug delivery modalities like patient-controlled epidural analgesia (PCEA) pumps and computer-integrated drug delivery pumps have improved the overall maternal satisfaction rate and have enabled us to customize a suitable analgesic regimen for each parturient. Recent randomized controlled trials and Cochrane studies have concluded that the association of epidurals with increased caesarean section and long-term backache remains only a myth. Studies have also shown that the newer, low-dose regimes do not have a statistically significant impact on the duration of labour and breast feeding and also that these reduce the instrumental delivery rates thus improving maternal and foetal safety. Advances in medical technology like use of ultrasound for localizing epidural space have helped the clinicians to minimize the failure rates, and many novel drug delivery modalities like PCEA and computer-integrated PCEA have contributed to the overall maternal satisfaction and safety. PMID:21189877

Effect of N-Methyl-D-Aspartate Receptor Antagonist Dextromethorphan on Opioid Analgesia in Pediatric Intensive Care Unit.

Science.gov (United States)

Naeem, Mohammed; Al Alem, Hala; Al Shehri, Ali; Al-Jeraisy, Majed

2016-01-01

Objective . Pain control is an essential goal in the management of critical children. Narcotics are the mainstay for pain control. Patients frequently need escalating doses of narcotics. In such cases an adjunctive therapy may be beneficial. Dextromethorphan (DM) is NMDA receptor antagonist and may prevent tolerance to narcotics; however, its definitive role is still unclear. We sought whether dextromethorphan addition could decrease the requirements of fentanyl to control pain in critical children. Design . Double-blind, randomized control trial (RCT). Setting . Pediatric multidisciplinary ICU in tertiary care center. Patients . Thirty-six pediatric patients 2-14 years of age in a multidisciplinary PICU requiring analgesia were randomized into dextromethorphan and placebo. The subjects in both groups showed similarity in most of the characteristics. Interventions . Subjects while receiving fentanyl for pain control received dextromethorphan or placebo through nasogastric/orogastric tubes for 96 hours. Pain was assessed using FLACC and faces scales. Measurements and Main Results . This study found no statistical significant difference in fentanyl requirements between subjects receiving dextromethorphan and those receiving placebo ( p = 0.127). Conclusions . Dextromethorphan has no effect on opioid requirement for control of acute pain in children admitted with acute critical care illness in PICU. The registration number for this trial is NCT01553435.

Effect of N-Methyl-D-Aspartate Receptor Antagonist Dextromethorphan on Opioid Analgesia in Pediatric Intensive Care Unit

Directory of Open Access Journals (Sweden)

Mohammed Naeem

2016-01-01

Full Text Available Objective. Pain control is an essential goal in the management of critical children. Narcotics are the mainstay for pain control. Patients frequently need escalating doses of narcotics. In such cases an adjunctive therapy may be beneficial. Dextromethorphan (DM is NMDA receptor antagonist and may prevent tolerance to narcotics; however, its definitive role is still unclear. We sought whether dextromethorphan addition could decrease the requirements of fentanyl to control pain in critical children. Design. Double-blind, randomized control trial (RCT. Setting. Pediatric multidisciplinary ICU in tertiary care center. Patients. Thirty-six pediatric patients 2–14 years of age in a multidisciplinary PICU requiring analgesia were randomized into dextromethorphan and placebo. The subjects in both groups showed similarity in most of the characteristics. Interventions. Subjects while receiving fentanyl for pain control received dextromethorphan or placebo through nasogastric/orogastric tubes for 96 hours. Pain was assessed using FLACC and faces scales. Measurements and Main Results. This study found no statistical significant difference in fentanyl requirements between subjects receiving dextromethorphan and those receiving placebo (p=0.127. Conclusions. Dextromethorphan has no effect on opioid requirement for control of acute pain in children admitted with acute critical care illness in PICU. The registration number for this trial is NCT01553435.

The effect of microinjection of dimethyl sulfoxide into the rostral ventromedial medulla on swim stress-induced analgesia

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S. Nazemi

2018-02-01

Full Text Available Background: Dimethyl sulfoxide (DMSO is an important solvent for compounds that used in pain research. Rostral ventromedial medulla (RVM plays an important role in modulating nociception and stress-induced analgesia (SIA. Objective: The aim of this study was to investigate the effect of DMSO administration into the RVM on SIA by using formalin test. Methods: This experimental study was conducted on 27 Wistar male rats (200±30 gr were randomly assigned to control, stress and stress+DMSO groups. Animals were placed in a water reservoir (20±1°C for 3 minutes to induce forced swimming stress. Stereotaxic surgery was performed to microinjection of DMSO (0.5μl, 100% into RVM. The pain behavior score was evaluated by subcutaneous injection of formalin 2% in the dorsal plantar region of hid paw. Findings: The pain score of phase 1, interphase and phase 2 of formalin test in swim stress group decreased significantly in comparison to control group (P<0.001, P< 0.05, P<0.001 respectively. In addition, the pain score of three phase of formalin test after DMSO injection in swim stress group decreased significantly in comparison to control and stress group (P<0.001, P<0.05 respectively. Conclusion: Also microinjections of DMSO into the RVM potentiate the swim stress analgesia. According to the analgesic effects of dimethyl sulfoxide, as well as its ability to potentiate stressinduced analgesia, DMSO should be used with caution as a solvent in pain studies. Conclusion: Force swim stress induces analgesia in, and microinjections of DMSO into the RVM potentiate the swim stress analgesia. According to the analgesic effects of DMSO, as well as its ability to potentiate stress-induced analgesia, it should be used with caution as solvent in pain studies.

Intrathecal analgesia and palliative care: A case study

Directory of Open Access Journals (Sweden)

Naveen S Salins

2010-01-01

Full Text Available Intrathecal analgesia is an interventional form of pain relief with definite advantages and multiple complications. Administration of intrathecal analgesia needs a good resource setting and expertise. Early complications of intrathecal analgesia can be very distressing and managing these complications will need a high degree of knowledge, technical expertise and level of experience. Pain control alone cannot be the marker of quality in palliative care. A holistic approach may need to be employed that is more person and family oriented.

Posterior paramedian subrhomboidal analgesia versus thoracic epidural analgesia for pain control in patients with multiple rib fractures.

Science.gov (United States)

Shelley, Casey L; Berry, Stepheny; Howard, James; De Ruyter, Martin; Thepthepha, Melissa; Nazir, Niaman; McDonald, Tracy; Dalton, Annemarie; Moncure, Michael

2016-09-01

Rib fractures are common in trauma admissions and are associated with an increased risk of pulmonary complications, intensive care unit admissions, and mortality. Providing adequate pain control in patients with multiple rib fractures decreases the risk of adverse events. Thoracic epidural analgesia is currently the preferred method for pain control. This study compared outcomes in patients with multiple acute rib fractures treated with posterior paramedian subrhomboidal (PoPS) analgesia versus thoracic epidural analgesia (TEA). This prospective study included 30 patients with three or more acute rib fractures admitted to a Level I trauma center. Thoracic epidural analgesia or PoPS catheters were placed, and local anesthesia was infused. Data were collected including patients' pain level, adjunct morphine equivalent use, adverse events, length of stay, lung volumes, and discharge disposition. Nonparametric tests were used and two-sided p Pain rating was lower in the PoPS group (2.5 vs. 5; p = 0.03) after initial placement. Overall, there was no other statistically significant difference in pain control or use of oral morphine adjuncts between the groups. Hypotension occurred in eight patients, 75% with TEA and only 25% with PoPS. No difference was found in adverse events, length of stay, lung volumes, or discharge disposition. In patients with rib fractures, PoPS analgesia may provide pain control equivalent to TEA while being less invasive and more readily placed by a variety of hospital staff. This pilot study is limited by its small sample size, and therefore additional studies are needed to prove equivalence of PoPS compared to TEA. Therapeutic study, level IV.

N-acetylcysteine, a glutamate modulator, in the treatment of trichotillomania: a double-blind, placebo-controlled study.

Science.gov (United States)

Grant, Jon E; Odlaug, Brian L; Kim, Suck Won

2009-07-01

Trichotillomania is characterized by repetitive hair pulling that causes noticeable hair loss. Data on the pharmacologic treatment of trichotillomania are limited to conflicting studies of serotonergic medications. N-acetylcysteine, an amino acid, seems to restore the extracellular glutamate concentration in the nucleus accumbens and, therefore, offers promise in the reduction of compulsive behavior. To determine the efficacy and tolerability of N-acetylcysteine in adults with trichotillomania. Twelve-week, double-blind, placebo-controlled trial. Ambulatory care center. Fifty individuals with trichotillomania (45 women and 5 men; mean [SD] age, 34.3 [12.1] years). N-acetylcysteine (dosing range, 1200-2400 mg/d) or placebo was administered for 12 weeks. Patients were assessed using the Massachusetts General Hospital Hair Pulling Scale, the Clinical Global Impression scale, the Psychiatric Institute Trichotillomania Scale, and measures of depression, anxiety, and psychosocial functioning. Outcomes were examined using analysis of variance modeling analyses and linear regression in an intention-to-treat population. Patients assigned to receive N-acetylcysteine had significantly greater reductions in hair-pulling symptoms as measured using the Massachusetts General Hospital Hair Pulling Scale (P acetylcysteine use compared with 16% taking placebo (P = .003). Significant improvement was initially noted after 9 weeks of treatment. This study, the first to our knowledge that examines the efficacy of a glutamatergic agent in the treatment of trichotillomania, found that N-acetylcysteine demonstrated statistically significant reductions in trichotillomania symptoms. No adverse events occurred in the N-acetylcysteine group, and N-acetylcysteine was well tolerated. Pharmacologic modulation of the glutamate system may prove to be useful in the control of a range of compulsive behaviors. clinicaltrials.gov Identifier: NCT00354770.

Combined spinal epidural labour analgesia: Complications and their management

OpenAIRE

YILMAZ, Nurullah; KOCAMANOGLU, Ismail Serhat; ABANOZ, Hakan

2016-01-01

Combined spinal-epidural analgesia (CSEA) is an effective and increasingly popular analgesia method used in vaginal delivery. CSEA provides rapid and excellent analgesia, allows mobilization, reduces drug consumption significantly and generally causes negligible maternal and fetal /neonatal adverse effects /complications not requiring treatment. The resulting adverse effects /complications are often associated with technical and /or agent/agents used and cause maternal and fetal /neonatal or,...

Does the placebo effect modulate drug bioavailability? Randomized cross-over studies of three drugs.

Science.gov (United States)

Hammami, Muhammad M; Yusuf, Ahmed; Shire, Faduma S; Hussein, Rajaa; Al-Swayeh, Reem

2017-05-23

Medication effect is the sum of its drug, placebo, and drug*placebo interaction effects. It is conceivable that the interaction effect involves modulating drug bioavailability; it was previously observed that being aware of caffeine ingestion may prolong caffeine plasma half-life. This study was set to evaluate such concept using different drugs. Balanced single-dose, two-period, two-group, cross-over design was used to compare the pharmacokinetics of oral cephalexin, ibuprofen, and paracetamol, each described by its name (overt) or as placebo (covert). Volunteers and study coordinators were deceived as to study aim. Drug concentrations were determined blindly by in-house, high performance liquid chromatography assays. Terminal-elimination half-life (t ½ ) (primary outcome), maximum concentration (C max ), C max first time (T max ), terminal-elimination-rate constant (λ), area-under-the-concentration-time-curve, to last measured concentration (AUC T ), extrapolated to infinity (AUC I ), or to T max of overt drug (AUC Overttmax ), and C max /AUC I were calculated blindly using standard non-compartmental method. Covert-vs-overt effect on drug pharmacokinetics was evaluated by analysis-of-variance (ANOVA, primary analysis), 90% confidence interval (CI) using the 80.00-125.00% bioequivalence range, and percentage of individual pharmacokinetic covert/overt ratios that are outside the +25% range. Fifty, 30, and 50 healthy volunteers (18%, 10%, and 6% females, mean (SD) age 30.8 (6.2), 31.4 (6.6), and 31.2 (5.4) years) participated in 3 studies on cephalexin, ibuprofen, and paracetamol, respectively. Withdrawal rate was 4%, 0%, and 4%, respectively. Eighteen blood samples were obtained over 6, 10, and 14 h in each study period of the three drugs, respectively. ANOVA showed no significant difference in any pharmacokinetic parameter for any of the drugs. The 90% CIs for AUC T , AUC I , C max , AUC Overttmax , and C max /AUC I were within the bioequivalence range, except

Epidural analgesia practices for labour: results of a 2005 national survey in Ireland.

LENUS (Irish Health Repository)

Fanning, Rebecca A

2012-02-01

BACKGROUND AND OBJECTIVE: The last 25 years have seen changes in the management of epidural analgesia for labour, including the advent of low-dose epidural analgesia, the development of new local anaesthetic agents, various regimes for maintaining epidural analgesia and the practice of combined spinal-epidural analgesia. We conducted a survey of Irish obstetric anaesthetists to obtain information regarding the conduct and management of obstetric epidural analgesia in Ireland in 2005. The specific objective of this survey was to discover whether new developments in obstetric anaesthesia have been incorporated into clinical practice. METHODS: A postal survey was sent to all anaesthetists with a clinical commitment for obstetric anaesthesia in the sites approved for training by the College of Anaesthetists, Ireland. RESULTS: Fifty-three per cent of anaesthetists surveyed responded. The majority of anaesthetists (98%) use low-dose epidural analgesia for the maintenance of analgesia. Only 11% use it for test-dosing and 32% for the induction of analgesia. The combined spinal-epidural analgesia method is used by 49%, but two-thirds of those who use it perform fewer than five per month. Patient-controlled epidural analgesia was in use at only one site. CONCLUSION: It appears that Irish obstetric anaesthetists have adopted the low-dose epidural analgesia trend for the maintenance of labour analgesia. This practice is not as widespread, however, for test dosing, the induction of analgesia dose or in the administration of intermittent epidural boluses to maintain analgesia when higher concentrations are used. Since its introduction in 2000, levobupivacaine has become the most popular local anaesthetic agent.

Epidural analgesia practices for labour: results of a 2005 national survey in Ireland.

Science.gov (United States)

Fanning, Rebecca A; Briggs, Liam P; Carey, Michael F

2009-03-01

The last 25 years have seen changes in the management of epidural analgesia for labour, including the advent of low-dose epidural analgesia, the development of new local anaesthetic agents, various regimes for maintaining epidural analgesia and the practice of combined spinal-epidural analgesia. We conducted a survey of Irish obstetric anaesthetists to obtain information regarding the conduct and management of obstetric epidural analgesia in Ireland in 2005. The specific objective of this survey was to discover whether new developments in obstetric anaesthesia have been incorporated into clinical practice. A postal survey was sent to all anaesthetists with a clinical commitment for obstetric anaesthesia in the sites approved for training by the College of Anaesthetists, Ireland. Fifty-three per cent of anaesthetists surveyed responded. The majority of anaesthetists (98%) use low-dose epidural analgesia for the maintenance of analgesia. Only 11% use it for test-dosing and 32% for the induction of analgesia. The combined spinal-epidural analgesia method is used by 49%, but two-thirds of those who use it perform fewer than five per month. Patient-controlled epidural analgesia was in use at only one site. It appears that Irish obstetric anaesthetists have adopted the low-dose epidural analgesia trend for the maintenance of labour analgesia. This practice is not as widespread, however, for test dosing, the induction of analgesia dose or in the administration of intermittent epidural boluses to maintain analgesia when higher concentrations are used. Since its introduction in 2000, levobupivacaine has become the most popular local anaesthetic agent.

Electroacupuncture analgesia in a rabbit ovariohysterectomy.

Science.gov (United States)

Parmen, Valentin

2014-02-01

This study investigated the effectiveness of electroacupuncture analgesia (EAA) at local and paravertebral acupoints for a rabbit undergoing an ovariohysterectomy. Twelve clinically healthy New Zealand white rabbits were chosen and divided into two groups: the control group (5 rabbits) and the experimental group (7 rabbits). A neuroleptanalgesic (ketamine + xylazine) was administered to the control group (NLA group); the experimental group received EAA treatment (EAA group). The EAA treatment includes one acupuncture formula for local stimulation at the incision site and systemic stimulation. Results of clinical research have shown postoperative analgesia using EAA treatment to be superior to that using NLA. The average postoperative recovery time was 5.2 times longer in the NLA group than in the EAA group. Because consciousness was maintained, EAA presented an advantage in thermoregulation. Animals administered NLA had prolonged thermal homeostasis because of neurovegetative disconnection. For the EAA group, the operative times were characterized as excellent (28%, p = 0.28) or good (72%, p = 0.72). Local stimulation at the incision site provided excellent analgesia of the abdominal wall (100%). In conclusion, EA can provide general analgesia with a considerable analgesic effect for a rabbit undergoing an ovariohysterectomy, resulting in a short postoperative recovery time. Copyright © 2014. Published by Elsevier B.V.

Acupuncture Mechanisms: Anesthesia, Analgesia and Protection on Organ Functions

Directory of Open Access Journals (Sweden)

Jing Wang

2015-01-01

Full Text Available Acupuncture, as a healing art in traditional Chinese medicine, has been widely used to treat various diseases. In the history of acupuncture anesthesia, in the past decades, mechanisms of acupuncture analgesia has been widely investigated, and in recent years, acupuncture protection on organ functions has attracted great interest. This review summarized the research progress on mechanisms of acupuncture for analgesia and its protection against organ function injury in anesthesia, and its perspective of analgesia, immunomodulation, neuroendocrine regulation and multiple organ protection. The current evidence supports that acupuncture analgesia and its organ protection in anesthesia is associated with the integration of neuroendocrine-immune networks in the level of neurotransmitters, cytokines, hormones, neuronal ensembles, lymphocytes, and endocrine cells. Although the mechanisms of acupuncture analgesia and its organ protection are still not completely understood, basic as well as clinic researches on the mechanisms and applications of acupuncture and related techniques are being carried out.

Assisting informed decision making for labour analgesia: a randomised controlled trial of a decision aid for labour analgesia versus a pamphlet

Directory of Open Access Journals (Sweden)

Torvaldsen Siranda

2010-04-01

Full Text Available Abstract Background Most women use some method of pain relief during labour. There is extensive research evidence available of pharmacological pain relief during labour; however this evidence is not readily available to pregnant women. Decision aids are tools that present evidence based information and allow preference elicitation. Methods We developed a labour analgesia decision aid. Using a RCT design women either received a decision aid or a pamphlet. Eligible women were primiparous, ≥ 37 weeks, planning a vaginal birth of a single infant and had sufficient English to complete the trial materials. We used a combination of affective (anxiety, satisfaction and participation in decision-making and behavioural outcomes (intention and analgesia use to assess the impact of the decision aid, which were assessed before labour. Results 596 women were randomised (395 decision aid group, 201 pamphlet group. There were significant differences in knowledge scores between the decision aid group and the pamphlet group (mean difference 8.6, 95% CI 3.70, 13.40. There were no differences between decisional conflict scores (mean difference -0.99 (95% CI -3.07, 1.07, or anxiety (mean difference 0.3, 95% CI -2.15, 1.50. The decision aid group were significantly more likely to consider their care providers opinion (RR 1.28 95%CI 0.64, 0.95. There were no differences in analgesia use and poor follow through between antenatal analgesia intentions and use. Conclusions This decision aid improves women's labour analgesia knowledge without increasing anxiety. Significantly, the decision aid group were more informed of labour analgesia options, and considered the opinion of their care providers more often when making their analgesia decisions, thus improving informed decision making. Trial Registration Trial registration no: ISRCTN52287533

Remifentanil versus placebo for analgesia during external cephalic version: a randomised clinical trial.

Science.gov (United States)

Muñoz, H; Guerra, S; Perez-Vaquero, P; Valero Martinez, C; Aizpuru, F; Lopez-Picado, A

2014-02-01

Breech presentation occurs in up to 3% of pregnancies at term and may be an indication for caesarean delivery. External cephalic version can be effective in repositioning the fetus in a cephalic presentation, but may be painful for the mother. Our aim was to assess the efficacy of remifentanil versus placebo for pain relief during external cephalic version. A randomized, double-blind, controlled trial that included women at 36-41 weeks of gestation with non-cephalic presentations was performed. Women were randomized to receive either a remifentanil infusion at 0.1 μg/kg/min and demand boluses of 0.1 μg/kg, or saline placebo. The primary outcome was the numerical rating pain score (0-10) after external cephalic version. Sixty women were recruited, 29 in the control group and 31 in the remifentanil group. There were significant differences in pain scores at the end of the procedure (control 6.5 ± 2.4 vs. remifentanil 4.7 ± 2.5, P = 0.005) but not 10 min later (P = 0.054). The overall success rate for external cephalic version was 49% with no significant differences between groups (remifentanil group 54.8% vs. control group 41.3%, P = 0.358). In the remifentanil group, there was one case of nausea and vomiting, one of drowsiness and three cases of fetal bradycardia. In the control group, there were three cases of nausea and vomiting, one of dizziness and nine cases of fetal bradycardia. Intravenous remifentanil with bolus doses on demand during external cephalic version achieved a reduction in pain and increased maternal satisfaction. There were no additional adverse effects, and no difference in the success rate of external cephalic version or the incidence of fetal bradycardia. Copyright © 2013 Elsevier Ltd. All rights reserved.

Intravenous patient-controlled analgesia for acute postoperative pain

DEFF Research Database (Denmark)

Nikolajsen, Lone; Haroutiunian, Simon

2011-01-01

analgesia in terms of adverse effects and consumption of opioids. Standard orders and nursing procedure protocols are recommended for patients receiving intravenous patient-controlled analgesia to monitor treatment efficacy and development of adverse effects. Some subgroups of patients need special...

Comparison of the effects of preoperative and intraoperative intravenous application of dexketoprofen on postoperative analgesia in septorhinoplasty patients: randomised double blind clinical trial.

Science.gov (United States)

Ozer, A B; Erhan, O L; Keles, E; Demirel, I; Bestas, A; Gunduz, G

2012-11-01

Postoperative analgesia is important because it prevents the adverse effects of pain. To study the effect of preoperative or intraoperative application of dexketoprofen on postoperative analgesia and patient comfort in patients undergoing septorhinoplasty. A randomized, double-blind, placebo-controlled study. The study included 100 patients randomly assigned to four groups. Patients from group 50/0 got 50 mg dexketoprofen 30 minutes prior to the operation; patients from group 0/50 got 50 mg dexketoprofen 30 minutes after the operation, and patients from group 25/25 got 25 mg dexketoprofen both 30 minutes prior and 30 minutes after the operation. Dexketoprofen was not applied to any of the patients from group C. Once in the recovery room, patient-controlled analgesia was received to all patients. The patients' visual analog scale (VAS), sedation, nausea and vomiting and dyspepsia complaints were recorded at 1, 2, 3, 4, 5, 6, 7, 8, 12 and 24 hours. In addition, patient satisfaction, intraoperative fentanyl and consumption of tramadol in the postoperative 24 hour period were recorded. The VAS, nausea and vomiting, sedation and patient satisfaction scores were lower in patients from all groups that had received dexketoprofen compared to the controls. There was no difference in intraoperative fentanyl consumption between the groups. The consumption of tramadol was significantly higher in group C compared to all other groups. Dexketoprofen provides good postoperative analgesia and patient satisfaction if applied intravenously to septorhinoplasty patients. However, there is no significant difference between preoperative and intraoperative applications of dexketoprofen.

Epidural analgesia for labour: maternal knowledge, preferences and informed consent.

LENUS (Irish Health Repository)

2012-02-29

Epidural analgesia has become increasingly popular as a form of labour analgesia in Ireland. However obtaining true inform consent has always been difficult. Our study recruited 100 parturients who had undergone epidural analgesia for labour, aimed to determine the information they received prior to regional analgesia, and to ascertain their preferences regarding informed consent. Only 65 (65%) of patients planned to have an epidural. Knowledge of potential complications was variable and inaccurate, with less than 30 (30%) of women aware of the most common complications. Most women 79 (79%) believed that discomfort during labour affected their ability to provide informed consent, and believe consent should be taken prior to onset of labour (96, 96%). The results of this study helps define the standards of consent Irish patients expect for epidural analgesia during labour.

Effect of ketamine on endogenous pain modulation in healthy volunteers.

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Niesters, Marieke; Dahan, Albert; Swartjes, Maarten; Noppers, Ingeborg; Fillingim, Roger B; Aarts, Leon; Sarton, Elise Y

2011-03-01

Inhibitory and facilitatory descending pathways, originating at higher central nervous system sites, modulate activity of dorsal horn nociceptive neurons, and thereby influence pain perception. Dysfunction of inhibitory pain pathways or a shift in the balance between pain facilitation and pain inhibition has been associated with the development of chronic pain. The N-methyl-d-aspartate receptor antagonist ketamine has a prolonged analgesic effect in chronic pain patients. This effect is due to desensitization of sensitized N-methyl-d-aspartate receptors. Additionally, ketamine may modulate or enhance endogenous inhibitory control of pain perception. Diffuse noxious inhibitory control (DNIC) and offset analgesia (OA) are 2 mechanisms involved in descending inhibition. The present study investigates the effect of a ketamine infusion on subsequent DNIC and OA responses to determine whether ketamine has an influence on descending pain control. Ten healthy subjects (4 men/6 women) received a 1-hour placebo or S(+)-ketamine (40mg per 70kg) infusion on 2 separate occasions in random order. Upon the termination of the infusion, DNIC and OA responses were obtained. After placebo treatment, significant descending inhibition of pain responses was present for DNIC and OA. In contrast, after ketamine infusion, no DNIC was observed, but rather a significant facilitatory pain response (Ppain inhibition and pain facilitation was shifted by ketamine towards pain facilitation. The absence of an effect of ketamine on OA indicates differences in the mechanisms and neurotransmitter influences between OA and DNIC. Diffuse noxious inhibitory control responses following a 1-hour low-dose ketamine treatment displayed facilitation of pain in response to experimental noxious thermal stimulation. Copyright © 2010 International Association for the Study of Pain. Published by Elsevier B.V. All rights reserved.

LABOUR ANALGESIA: EPIDURAL DEXMEDITOMIDINE WITH EITHER BUPIVACAINE OR ROPIVACAINE

OpenAIRE

Varaprasad

2015-01-01

BACKGROUND: Pain relief in labour is associated with myths and controversies. Providing effective and safe analgesia has remained a challenge. AIM: The purpose of the study was to compare the effect of analgesia with epidural bupivacain or ropivacain along with dexme ditomidine. METHODS AND MATERIAL: Sixty parturients of ASA grade I and II were randomly selected for the study. Each group consisted of thirty patients. The analgesia, motor loss and level of seda...

Mastoplastia reductora con analgesia acupuntural A mamaplastic reduction using acupunctural analgesia

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Javier Cordero Lozano

2004-08-01

Full Text Available Se realizó un ensayo clínico prospectivo y descriptivo con 40 pacientes portadoras de hipertrofia mamaria que acudieron a consulta de Cirugía Plástica en el Hospital Universitario "Abel Santamaría Cuadrado" de Pinar del Río entre septiembre de 2002 y agosto de 2003 a las que se les realizó mastoplastia reductora con analgesia acupuntural (puntos C1, IG4, VC17, VG20 y un punto especial evaluando la calidad de la analgesia acupuntural transoperatoria, el comportamiento hemodinámico transoperatorio y la ocurrencia de complicaciones postoperatorias. Para la validación estadística se utilizó el paquete Systat Con nivel de ajuste µ= 0.05. Se logró con la acupuntura un nivel analgésico transoperatorio satisfactorio en el 50 % de los casos, incluyendo pacientes de todos los grupos de edad, sobre todo en intervenciones que duraran hasta dos horas, independientemente del grado de hipertrofia mamaria. El comportamiento hemodinámico transoperatorio fue satisfactorio en las pacientes operadas con acupuntura; con esta técnica el registro de complicaciones fue inferior al reportado con anestesia general endotraqueal por otros autores, sin que se reportaran reacciones adversas por el uso de la acupuntura.A prospective descriptive clinical trial was carried out in a sample of 40 patients suffering from breast hypertrophy who attended Cosmetic Surgery Office at Abel Santamaría General Hospital between September 2002 and August 2003. A reductive mastoplasia using acupunctural analgesia was carried out (C1, IG4, VC17, VG20 points and special one assessing the quality of transoperative acupunctural analgesia, transoperative hemodynamic behaviour and the occurrence of postoperative complications. Systat pack was used for statistical validation with a fitted level of a = 0.05. a transoperative analgesic level was achieved successfully in 50 % of cases including patients from every age group particularly in up to two hours surgeries irrespective of the

Preemptive analgesia I: physiological pathways and pharmacological modalities.

LENUS (Irish Health Repository)

Kelly, D J

2012-02-03

PURPOSE: This two-part review summarizes the current knowledge of physiological mechanisms, pharmacological modalities and controversial issues surrounding preemptive analgesia. SOURCE: Articles from 1966 to present were obtained from the MEDLINE databases. Search terms included: analgesia, preemptive; neurotransmitters; pain, postoperative; hyperalgesia; sensitization, central nervous system; pathways, nociception; anesthetic techniques; analgesics, agents. Principal findings: The physiological basis of preemptive analgesia is complex and involves modification of the pain pathways. The pharmacological modalities available may modify the physiological responses at various levels. Effective preemptive analgesic techniques require multi-modal interception of nociceptive input, increasing threshold for nociception, and blocking or decreasing nociceptor receptor activation. Although the literature is controversial regarding the effectiveness of preemptive analgesia, some general recommendations can be helpful in guiding clinical care. Regional anesthesia induced prior to surgical trauma and continued well into the postoperative period is effective in attenuating peripheral and central sensitization. Pharmacologic agents such as NSAIDs (non-steroidal anti-inflammatory drugs) opioids, and NMDA (N-methyl-D-aspartate) - and alpha-2-receptor antagonists, especially when used in combination, act synergistically to decrease postoperative pain. CONCLUSION: The variable patient characteristics and timing of preemptive analgesia in relation to surgical noxious input requires individualization of the technique(s) chosen. Multi-modal analgesic techniques appear most effective.

Preemptive analgesia II: recent advances and current trends.

LENUS (Irish Health Repository)

Kelly, D J

2012-02-03

PURPOSE: This two-part review summarizes the current knowledge of physiological mechanisms, pharmacological modalities and controversial issues surrounding preemptive analgesia. SOURCE: Articles from 1966 to present were obtained from the MEDLINE databases. Search terms included analgesia, preemptive; neurotransmitters; pain, postoperative; hyperalgesia; sensitization, central nervous system; pathways, nociception; anesthetic techniques; analgesics, agents. Principal findings: In Part I of this review article, techniques and agents that attenuate or prevent central and peripheral sensitization were reviewed. In Part II, the conditions required for effective preemptive techniques are evaluated. Specifically, preemptive analgesia may be defined as an antinociceptive treatment that prevents establishment of altered central processing of afferent input from sites of injury. The most important conditions for establishment of effective preemptive analgesia are the establishment of an effective level of antinociception before injury, and the continuation of this effective analgesic level well into the post-injury period to prevent central sensitization during the inflammatory phase. Although single-agent therapy may attenuate the central nociceptive processing, multi-modal therapy is more effective, and may be associated with fewer side effects compared with the high-dose, single-agent therapy. CONCLUSION: The variable patient characteristics and timing of preemptive analgesia in relation to surgical noxious input require individualization of the technique(s) chosen. Multi-modal analgesic techniques appear more effective.

Labour analgesia and the baby: good news is no news.

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Reynolds, Felicity

2011-01-01

When investigating different methods of maternal pain relief in labour, neonatal outcome has not always been at the forefront, or else maternal changes, such as haemodynamics, fever, length of labour, need for oxytocin or type of delivery, are taken as surrogates for neonatal outcome. It is essential to examine the actual baby and to appreciate that labour pain itself has adverse consequences for the baby. For systemic analgesia, pethidine has been most extensively studied and compared with neuraxial analgesia. It depresses fetal muscular activity, aortic blood flow, short-term heart rate variability and oxygen saturation. In the newborn it exacerbates acidosis, depresses Apgar scores, respiration, neurobehavioural score, muscle tone and suckling. Alternatives have few advantages, remifentanil being the most promising. Neuraxial analgesia is associated with better Apgar scores and variable neurobehavioural changes. Neonatal acid-base status is not only better with epidural than with systemic opioid analgesia, it is also better than with no analgesia. The effect on breast feeding has yet to be established, though it is certainly no worse than that of systemic opioid analgesia. Variations in neuraxial technique have little impact on the newborn. Widespread ignorance of the benefit to the newborn of neuraxial labour analgesia in the UK among non-anaesthetists needs to be combated. Copyright © 2010 Elsevier Ltd. All rights reserved.

Effects of maternal epidural analgesia on the neonate--a prospective cohort study.

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Shrestha, Bikash; Devgan, Amit; Sharma, Mukti

2014-12-10

Epidural analgesia is one of the most popular modes of analgesia for child birth. There are controversies regarding adverse effects and safety of epidural analgesia. This study was conducted to study the immediate effects of the maternal epidural analgesia on the neonate during early neonatal phase. A prospective cohort study of 100 neonates born to mothers administered epidural analgesia were compared with 100 neonates born to mothers not administered epidural analgesia in terms of passage of urine, initiation of breast feeding, birth asphyxia and incidence of instrumentation. There was significant difference among the two groups in the passage of urine (P value 0.002) and incidence of instrumentation (P value 0.010) but there was no significant difference in regards to initiation of breast feeding and birth asphyxia. Epidural analgesia does not have any effect on the newborns in regards to breast feeding and birth asphyxia but did have effects like delayed passage of urine and increased incidence of instrumentation.

[Observation on analgesia effect of electroacupuncture during gynecologic outpatient operation].

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Wang, Xiao-Hui; Wu, Xue-Lei; Jin, Ping-Lin; Wang, Lu-Dong; Zhao, Zhi-En; Qin, Xue-Yu; Zhang, Zhi-Yan; Hu, Xue-Zhu; Cai, Zhen-Lin

2012-10-01

To verify the feasibility of electroacupuncture analgesia applied to gynecologic outpatient operation. Two hundred patients were randomly divided into an electroacupuncture analgesia group and an intravenous anesthesia group, 100 cases in each group. Operation types included artificial abortion, diagnostic curettage and remove of intrauterine divice. The electroacupuncture analgesia group was treated with electroacupuncture at bilateral Hegu (LI 4) and Neiguan (PC 6), and the routine gynecologic outpatient operation was performed under patients' waking state. The intravenous anesthesia group was treated with routine gynecologic outpatient operation after intravenous injection of fentanyl and propofol. The excellent rate and the effective rate of analgesia were 88.0% (88/100) and 100.0% (100/100) in the electroacupuncture analgesia group, and 94.0% (94/100) and 100.0% (100/100) in the intravenous anesthesia group, with no statistically significant differences between the two groups (all P > 0.05). There was no adverse reaction in the electroacupuncture anesthesia group, but 11 cases of adverse reactions in the intravenous anesthesia group. Electroacupuncture analgesia can effectively alleviate the pain during gynecologic outpatient operation and it is simple and safe without adverse reactions.

Continuous versus patient-controlled epidural analgesia for labour analgesia and their effects on maternal motor function and ambulation.

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Lovach-Chepujnoska, Margarita; Nojkov, Jordan; Joshevska-Jovanovska, Slagjana; Domazetov, Robert

2014-01-01

The advantages of patient-controlled epidural analgesia (PCEA) for delivery compared with continuous epidural analgesia (CEA) have been a point of interest in research obstetric anaesthesia for more than two decades. The aim of this single blind randomized controlled study was to evaluate the incidence of motor block and ability to perform partial knee flexion in women who received CEA or PCEA. Fifty-one healthy nulliparous women were included in this study. After an initial dose and established sensory block at Th 10, parturients were randomized into two groups: group CEA (10 ml/h), and group PCEA (bolus - 5 ml, lockout interval - 15 minutes, basal rate - 0 ml) with bupivacaine 0.08% and fentanyl 2 µg/ml. The motor function of the lower limbs was evaluated by modified Bromage scale at regular hourly intervals until full cervical dilatation. The quality of analgesia was assessed using a visual analogue pain scale (VAPS) and maternal satisfaction. Mode of delivery, the total number of additional rescue boluses, foetal and neonatal outcomes were recorded. Motor block was significantly lower in the third (33.3% vs. 4.35%; p = 0.008), fourth (57.9% vs. 6.3%; p = 0.003) and fifth hour (75.0% vs. 18.2%; p = 0.001) in the PCEA group. Ambulation occurred in 18% in the CEA and 46% in the PCEA group (p = 0.036). VAPS was with borderline significance in the second (p = 0.076) and significantly lower in the fourth hour (p = 0.034). Compared with CEA, PCEA provided less motor block and better first-stage analgesia, which leads to the conclusion that patient-controlled analgesia techniques are the preferred model in obstetric anesthesia.

Bupivacaine versus lidocaine analgesia for neonatal circumcision

OpenAIRE

Stolik-Dollberg, Orit C; Dollberg, Shaul

2005-01-01

Abstract Background Analgesia for neonatal circumcision was recently advocated for every male infant, and its use is considered essential by the American Academy of Pediatrics. We compared the post-operative analgesic quality of bupivacaine to that of lidocaine for achieving dorsal penile nerve block (DPNB) when performing neonatal circumcision. Methods Data were obtained from 38 neonates following neonatal circumcision. The infants had received DPNB analgesia with either lidocaine or bupivac...

Transversus abdominis plane block: A multimodal analgesia technique – Our experience

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Deepak Dwivedi

2017-01-01

Full Text Available Context: A retrospective observational study conducted to assess transversus abdominis plane (TAP block as a tool for providing multimodal analgesia postoperatively for abdominal surgeries. Aims: The aim is to compare the visual analog scale (VAS of pain and the requirement of rescue analgesia postoperatively in patients undergoing various abdominal surgeries (open and laparoscopic where TAP block was given for postoperative analgesia and was compared with patients who received pain relief according to the institutional protocol. Settings and Design: Retrospective observational study conducted in a tertiary care hospital. Subjects and Methods: Retrospective data from anesthesia records of patients, who underwent abdominal surgeries from January 2016 to December 2016, were analyzed and were divided into two groups. Group A (n = 250 consisted of patients who received the conventional standard postoperative analgesia protocol of the department of anesthesia. Group B (n = 136 consisted of patients who were administered TAP block postsurgery for the postoperative analgesia by the trained anesthesiologist. Primary outcome considered was (i average VAS at 02, 06, 12, and 24 h and (ii average opioid/nonsteroidal anti-inflammatory drug consumption at 24 h postoperatively. Secondary outcome considered was time to first rescue analgesia. Statistical Analysis: All parametric data were analyzed using unpaired t-test. Data are expressed as the mean ± standard deviation. A SPSS version 17 (SPSS Inc., Chicago, IL, USA was used for statistical analysis. Results: Average pain scores (VAS were lower in Group B as compared to Group A in all subcategories of surgery postoperatively. Patients given TAP block (Group B required less rescue analgesia in the postoperative period with time to first rescue analgesia being prolonged. Conclusions: On the basis of our retrospective study, we suggest that TAP block can be utilized as a part of multimodal analgesia regimen for

Postoperative Analgesic Efficacy of Bilateral Transversus Abdominis Plane Block in Patients Undergoing Midline Colorectal Surgeries Using Ropivacaine: A Randomized, Double-blind, Placebo-controlled Trial.

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Qazi, Nahida; Bhat, Wasim Mohammad; Iqbal, Malik Zaffar; Wani, Anisur Rehman; Gurcoo, Showkat A; Rasool, Sahir

2017-01-01

Ultrasound-guided transversus abdominis plane (TAP) block is done as a part of multimodal analgesia for pain relief after abdominal surgeries. This prospective randomized, double-blind, placebo-controlled trial was conducted to evaluate the postoperative analgesic efficacy of bilateral TAP block in patients undergoing midline colorectal surgeries using ropivacaine. Eighty patients scheduled for elective colorectal surgeries involving midline abdominal wall incision under general anesthesia were enrolled in this prospective randomized controlled trial. Group A received TAP block with 20 ml of 0.2% ropivacaine on either side of the abdominal wall, and Group B received 20 ml of normal saline. The time to request for rescue analgesia, total analgesic consumption in 24 h, and satisfaction with the anesthetic technique were assessed. The mean visual analog scale scores at rest and on coughing were higher in control group ( P > 0.05). Time (min) to request for the first rescue analgesia was prolonged in study group compared to control group ( P consumption in 24 h postoperatively was significantly high in control group ( P 0.05). The level of satisfaction concerning postoperative pain control/anesthetic technique was higher in study group ( P < 0.001). TAP block produces effective and prolonged postoperative analgesia in patients undergoing midline colorectal surgery. It is a technically simple block to perform with a high margin of safety. It produces a considerable reduction in mean intravenous postoperative tramadol requirements, reduction in postoperative pain scores, and increased time to first request for further analgesia, both at rest and on movement.

Analgesic and antisympathetic effects of clonidine in burn patients, a randomized, double-blind, placebo-controlled clinical trial

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Ostadalipour Abbas

2007-01-01

Full Text Available Objectives: Unlike most other Analgesic drugs, α2 adrenoceptor agonists are capable of producing analgesia. The aim of this study was to evaluate the Analgesic and antisympathetic effects of clonidine, an α2 adrenoceptor agonist in burn patients. Materials and Methods: This randomized, double-blind, placebo-controlled clinical trial performed on one hundred burn patients in Zarea Hospital, Mazandaran, Iran from august 2004 to July 2005. All patients divided in two groups. Case group (n=50 received oral clonidine, 3.3μg/kg TDS and controls (n=50 received placebo. Heart rate and systolic blood pressure and pain severity Visual analogue score (VAS, were recorded after clonidine administration. Statistical analysis was done by means of Mann Witney U test. Results: 50 patients (mean age 28.96±10 years in case group, and 50 patients (mean age 27.60±11.4 years in control group were studied. VAS pain scores and heart rate in the clonidine group were significantly lower than the control group (P< 0.0001, P< 0.02.there were no significant difference in systolic blood pressure between the two groups on the first and second day but on third day the systolic blood pressure in clonidine group, was lower than controls significantly (P=0.002. Conclusion: This study demonstrates that the use of oral clonidine affects the hemodynamic response to pain in burn patients. Our study demonstrated that clonidine can produce good analgesia and decreased in sympathetic over activity in burn patients, and also reduce opioid dose requirements.

Is urinary drainage necessary during continuous epidural analgesia after colonic resection?

DEFF Research Database (Denmark)

Basse, L; Werner, M; Kehlet, H

2000-01-01

BACKGROUND AND OBJECTIVES: Postoperative urinary retention may occur in between 10% and 60% of patients after major surgery. Continuous lumbar epidural analgesia, in contrast to thoracic epidural analgesia, may inhibit urinary bladder function. Postoperative urinary drainage has been common...... that routine bladder catheterization beyond postoperative day 1 may not be necessary in patients with ongoing continuous low-dose thoracic epidural analgesia....

Comparison of Epidural Analgesia with Transversus Abdominis Plane Analgesia for Postoperative Pain Relief in Patients Undergoing Lower Abdominal Surgery: A Prospective Randomized Study.

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Iyer, Sadasivan Shankar; Bavishi, Harshit; Mohan, Chadalavada Venkataram; Kaur, Navdeep

2017-01-01

Anesthesiologists play an important role in postoperative pain management. For analgesia after lower abdominal surgery, epidural analgesia and ultrasound-guided transversus abdominis plane (TAP) block are suitable options. The study aims to compare the analgesic efficacy of both techniques. Seventy-two patients undergoing lower abdominal surgery under spinal anesthesia were randomized to postoperatively receive lumbar epidural catheter (Group E) or ultrasound-guided TAP block (Group T) through intravenous cannulas placed bilaterally. Group E received 10 ml 0.125% bupivacaine stat and 10 ml 8 th hourly for 48 h. Group T received 20 ml 0.125% bupivacaine bilaterally stat and 20 ml bilaterally 8 th hourly for 48 h. Pain at rest and on coughing, total paracetamol and tramadol consumption were recorded. Analgesia at rest was comparable between the groups in the first 16 h. At 24 and 48 h, Group E had significantly better analgesia at rest ( P = 0.001 and 0.004 respectively). Patients in Group E had significantly higher number of patients with nil or mild pain on coughing at all times. Paracetamol consumption was comparable in both groups, but tramadol consumption was significantly higher in Group T at the end of 48 h ( P = 0.001). For lower abdominal surgeries, analgesia provided by intermittent boluses of 0.125% is comparable for first 16 h between epidural and TAP catheters. However, the quality of analgesia provided by the epidural catheter is superior to that provided by TAP catheters beyond that both at rest and on coughing with reduced opioid consumption.

Effect of premedication to provide analgesia as a supplement to inferior alveolar nerve block in patients with irreversible pulpitis.

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Lapidus, Daniel; Goldberg, Jack; Hobbs, Edward H; Ram, Saravanan; Clark, Glenn T; Enciso, Reyes

2016-06-01

The authors' objective was to determine whether scientific evidence supports the use of oral premedication to increase the efficacy of inferior alveolar nerve block (IANB) and to decrease endodontic treatment pain in patients with diagnosed irreversible pulpitis. The authors included randomized controlled trials that involved enteral premedication and 2% lidocaine IANB for adults with irreversible pulpitis compared with placebo. In particular, the authors reviewed studies comparing nonsteroidal anti-inflammatory drugs (NSAIDs), benzodiazepines, acetaminophen, and corticosteroids with placebo. The authors searched the following electronic databases: the Cochrane Library, MEDLINE, and Web of Science. The authors analyzed 9 randomized controlled clinical trials. Patients who took the NSAIDs under study, including ibuprofen, ketorolac, diclofenac, indomethacin, and lornoxicam, 1 hour before endodontic treatment showed statistically significant improvement in the outcome of having "little or no pain" during endodontic treatment compared with patients who took a placebo 1 hour before endodontic treatment (risk ratio [RR], 1.989; 95% confidence interval [CI], 1.495-2.646; P < .001). Benzodiazepines were not as well represented in the literature, but the 2 included studies did not show a significant improvement in patients' having "little or no pain" during endodontic treatment over placebo (RR, 0.989; 95% CI, 0.677-1.444; P = .954). There is moderate evidence to support the use of oral NSAIDs-in particular, ibuprofen (600 milligrams)-1 hour before the administration of IANB local anesthetic (1.8-3.6 milliliters of 2% lidocaine) to provide additional analgesia to the patient. Copyright © 2016 American Dental Association. Published by Elsevier Inc. All rights reserved.

Chest pain control with kinesiology taping after lobectomy for lung cancer: initial results of a randomized placebo-controlled study.

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Imperatori, Andrea; Grande, Annamaria; Castiglioni, Massimo; Gasperini, Laura; Faini, Agnese; Spampatti, Sebastiano; Nardecchia, Elisa; Terzaghi, Lorena; Dominioni, Lorenzo; Rotolo, Nicola

2016-08-01

Kinesiology taping (KT) is a rehabilitative technique performed by the cutaneous application of a special elastic tape. We tested the safety and efficacy of KT in reducing postoperative chest pain after lung lobectomy. One-hundred and seventeen consecutive patients, both genders, age 18-85, undergoing lobectomy for lung cancer between January 2013 and July 2015 were initially considered. Lobectomies were performed by the same surgical team, with thoracotomy or video-assisted thoracoscopic surgery (VATS) access. Exclusion criteria (n = 25 patients) were: previous KT exposure, recent trauma, pre-existing chest pain, lack of informed consent, >24-h postoperative intensive care unit treatment. After surgery, the 92 eligible patients were randomized to KT experimental group (n = 46) or placebo control group (n = 46). Standard postoperative analgesia was administered in both groups (paracetamol/non-steroidal anti-inflammatory drugs, epidural analgesia including opioids), with supplemental analgesia boluses at patient request. On postoperative day 1 in addition, in experimental group patients a specialized physiotherapist applied KT, with standardized tape length, tension and shape, over three defined skin areas: at the chest access site pain trigger point; over the ipsilateral deltoid/trapezius; lower anterior chest. In control group, usual dressing tape mimicking KT was applied over the same areas, as placebo. Thoracic pain severity score [visual analogue scale (VAS) ranging 0-10] was self-assessed by all patients on postoperative days 1, 2, 5, 8, 9 and 30. The KT group and the control group had similar demographics, lung cancer clinico-pathological features and thoracotomy/VATS ratio. Postoperatively, the two groups also resulted similar in supplemental analgesia, complication rate, mean duration of chest drainage and length of stay. There were no adverse events with KT application. After tape application, KT patients reported overall less thoracic pain than the

Effects of epidural analgesia on labor length, instrumental delivery, and neonatal short-term outcome.

Science.gov (United States)

Hasegawa, Junichi; Farina, Antonio; Turchi, Giovanni; Hasegawa, Yuko; Zanello, Margherita; Baroncini, Simonetta

2013-02-01

We aimed to clarify whether the short-term adverse neonatal outcomes associated with epidural analgesia are due to the epidural analgesia itself or to the instrumental delivery. A retrospective case-control study was conducted to evaluate the relationship between epidural analgesia, labor length, and perinatal outcomes. A total of 350 pregnant women at term who delivered under epidural analgesia (cases) were compared with 1400 patients without epidural analgesia (controls). Vacuum extraction (6.5 vs. 2.9 %) and cesarean section (19.9 vs. 11.1 %) were more frequently performed in the cases than controls (p neonatal variables stratified by mode of delivery were not different in cases and controls, except for a slightly lower umbilical arterial pH in spontaneous delivery for the cases group. However, the Apgar scores and umbilical arterial pH were significantly lower in the neonates delivered by vacuum extraction compared with those in the neonates delivered by spontaneous delivery or cesarean section, regardless of whether epidural analgesia was performed. A multivariable analysis showed that vacuum extraction much more consistently affected the arterial pH than the analgesia itself (the β coefficients were -0.036 for epidural analgesia vs. -0.050 for vacuum extraction). Epidural analgesia was associated with slowly progressing labor, thus resulting in an increased rate of instrumental delivery. This instrumental delivery appears to adversely affect the neonatal outcomes more strongly than the analgesia itself.

Pregabalin and placebo responders show different effects on central pain processing in chronic pancreatitis patients

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Bouwense SA

2015-07-01

Full Text Available Stefan AW Bouwense,1 Søren S Olesen,2 Asbjørn M Drewes,2 Harry van Goor,1 Oliver HG Wilder-Smith31Pain and Nociception Neuroscience Research Group, Department of Surgery, Radboud university medical center, Nijmegen, The Netherlands; 2Mech-Sense, Department of Gastroenterology and Hepatology, Aalborg University Hospital, Aalborg, Denmark; 3Pain and Nociception Neuroscience Research Group, Department of Anaesthesiology, Pain and Palliative Medicine, Radboud university medical center, Nijmegen, The NetherlandsBackground: Pain control in chronic pancreatitis is a major challenge; the mechanisms behind analgesic treatment are poorly understood. This study aims to investigate the differences in pain sensitivity and modulation in chronic pancreatitis patients, based on their clinical response (responders vs nonresponders to placebo or pregabalin treatment. Methods: This study was part of a randomized, double-blind, placebo-controlled trial evaluating the analgesic effects of pregabalin and placebo in chronic pancreatitis. Post hoc, patients were assigned to one of four groups, ie, responders and nonresponders to pregabalin (n=16; n=15 or placebo (n=12; n=17 treatment. Responders were defined as patients with >30% pain reduction after 3 weeks of treatment. We measured change in pain sensitivity before and after the treatment using electric pain detection thresholds (ePDT in dermatomes C5 (generalized effects and Ventral T10 (segmental effects. Descending endogenous pain modulation was quantified via conditioned pain modulation (CPM paradigm. Results: Sixty patients were analyzed in a per-protocol analysis. ePDT change in C5 was significant vs baseline and greater in pregabalin (1.3 mA vs placebo responders (−0.1 mA; P=0.015. This was not so for ePDT in Ventral T10. CPM increased more in pregabalin (9% vs placebo responders (−17%; P<0.001. CPM changed significantly vs baseline only for pregabalin responders (P=0.006. Conclusion: This hypothesis

Effect of pain and analgesia on compensatory reserve.

Science.gov (United States)

Hinojosa-Laborde, Carmen; Fernandez, Jessie Renee D; Muniz, Gary W; Nawn, Corinne D; Burns, Rebecca K; Le, Thuan H; Porter, Kathy B; Hardy, John T; Convertino, Victor A

2017-07-01

The measurement of the body's capacity to compensate for reduced blood volume can be assessed with a compensatory reserve measurement (CRM). The CRM, which is calculated from changes in features of the arterial waveform, represents the integration of compensatory mechanisms during states of low tissue perfusion and oxygenation, such as hemorrhage. This study was designed to test the hypothesis that pain which activates compensatory mechanisms and analgesia that result in reduced blood pressure are associated with lower compensatory reserve. This study evaluated CRM in obstetric patients during labor as pain intensity increased from no pain to severe pain and compared CRM before and after epidural anesthesia. CRM was calculated from a finger pulse oximeter placed on the patient's index finger and connected to the DataOx monitor in healthy pregnant women (n = 20) before and during the active labor phase of childbirth. As pain intensity, based on an 11-point scale (0, no pain; 10, worst pain), increased from 0 to 8.4 ± 0.9 (mean ± SD), CRM was not affected (81 ± 10% to 82 ± 13%). Before analgesia, CRM was 84 ± 10%. CRM at 10 minutes, 20 minutes, 30 minutes, 40 minutes, 50 minutes, and 60 minutes after analgesia was 82 ± 11%, 83 ± 14%, 83 ± 15%, 86 ± 12%, 89 ± 9%, and 87 ± 10%, respectively. There was a transient 2% reduction followed by a 5% increase in CRM from before to after epidural anesthesia (p = 0.048). Pain scores before and after analgesia were 7 ± 2 and 1 ± 1, respectively (p < 0.001). These results indicate that pain and analgesia contribute minimally, but independently to the reduction in compensatory reserve associated with trauma and hemorrhage. As such, our findings suggest that analgesia can be safely administered on the battlefield while maintaining the maximal capacity of mechanisms to compensate for blood loss. Diagnostic study, level II.

Bupivacaine versus lidocaine analgesia for neonatal circumcision

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Stolik-Dollberg Orit C

2005-05-01

Full Text Available Abstract Background Analgesia for neonatal circumcision was recently advocated for every male infant, and its use is considered essential by the American Academy of Pediatrics. We compared the post-operative analgesic quality of bupivacaine to that of lidocaine for achieving dorsal penile nerve block (DPNB when performing neonatal circumcision. Methods Data were obtained from 38 neonates following neonatal circumcision. The infants had received DPNB analgesia with either lidocaine or bupivacaine. The outcome variable was the administration by the parents of acetaminophen during the ensuing 24 hours. Results Seventeen infants received lidocaine and 19 received bupivacaine DPNB. Ten infants in the lidocaine group (59% were given acetaminophen following circumcision compared to only 3 (16% in the bupivacaine group (P 2 = 20.6; P = 0.006. Conclusion DPNB with bupivacaine for neonatal circumcision apparently confers better analgesia than lidocaine as judged by the requirement of acetaminophen over the ensuing 24-hour period.

Ovariohysterectomy requires more post-operative analgesia than orchiectomy in dogs and cats.

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Quarterone, Carolina; Luna, Stelio Pacca Loureiro; Crosignani, Nadia; de Oliveira, Flávia Augusta; Lopes, Carlize; da Maia Lima, Alfredo Feio; de Araújo Aguiar, Antonio Jose

2017-11-01

The requirement for post-operative analgesia after ovariohysterectomy (OH) versus orchiectomy in dogs and cats was compared. Twelve male and 12 female cats and 12 male and 12 female dogs received meloxicam, 0.1 mg/kg body weight, PO, 2 h before surgery. Eleven female cats and 3 female dogs received rescue analgesia ( P = 0.002). No male of either species required rescue analgesia. The number of cats receiving rescue analgesia was greater in females than in males ( P dogs or cats. Postoperative pain after OH should be assessed for at least 2 h for cats and 4 h for dogs, using species-specific validated tools, to ensure proper postoperative pain diagnosis and management. Male dogs and cats subjected to orchiectomy required less postoperative analgesia intervention than female dogs and cats submitted to OH.

[The concept of placebo and the effect of placebo].

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Göka, Erol

2002-01-01

The discussions about what placebo means and how its effect occurs go far back in the history of medicine. In general medicinal understanding, placebo means the subjective feeling of a positive effect in response to something that is used for curative intentions. In spite of difficulties in its definition and unknown content, its existence is generally accepted. What is discussed is its level of effectiveness in any disorder and medication. The placebo effect varies not only among diseases but also among regions and countries. Even the physicians' belief in a placebo increases its effect. Another interesting point about the placebo is its side effects. In many placebo controlled studies, the side effects of the placebo are found to be greater than those of real drugs. Different from other diseases, psychiatric disorders have strong connections with the placebo effect. The results of many studies support this idea. The increasing importance of placebos in psychiatry is really an interesting subject. For some people, the reason for this is hidden in the nature of psychiatric diseases. However, nonpharmacologic placebos such as "inspiration", "convincing", "confidence", and "belief" are believed to play a central role in psychiatry. In this article, placebo (the placebo effect) is defined, the implications of placebo in general medicine or psychiatry are discussed, and specific or nonspecific treatment methods are explained. The effects of a placebo on both the patient and the physician are emphasized. The significance of the placebo effect in psychiatry is also mentioned; and a new point of view, based upon the importance of symbolization and satisfaction is introduced in treatment and related action mechanisms.

Intravenous Remifentanil versus Epidural Ropivacaine with Sufentanil for Labour Analgesia: A Retrospective Study

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Xu, Zhendong; Su, Jing; Liu, Zhiqiang

2014-01-01

Remifentanil with appropriate pharmacological properties seems to be an ideal alternative to epidural analgesia during labour. A retrospective cohort study was undertaken to assess the efficacy and safety of remifentanil intravenous patient-controlled analgesia (IVPCA) compared with epidural analgesia. Medical records of 370 primiparas who received remifentanil IVPCA or epidural analgesia were reviewed. Pain and sedation scores, overall satisfaction, the extent of pain control, maternal side effects and neonatal outcome as primary observational indicators were collected. There was a significant decline of pain scores in both groups. Pain reduction was greater in the epidural group throughout the whole study period (0∼180 min) (Panalgesia. And logistic regression analysis demonstrated that nausea, vomiting were associated with oxytocin usage and instrumental delivery, and dizziness was associated to the type and duration of analgesia. Neonatal outcomes such as Apgar scores and umbilical-cord blood gas analysis were within the normal range, but umbilical pH and base excess of neonatus in the remifentanil group were significantly lower. Remifentanil IVPCA provides poorer efficacy on labor analgesia than epidural analgesia, with more sedation on parturients and a trend of newborn acidosis. Despite these adverse effects, remifentanil IVPCA can still be an alternative option for labor analgesia under the condition of one-to-one bedside care, continuous monitoring, oxygen supply and preparation for neonatal resuscitation. PMID:25386749

Naltrexone-sensitive analgesia following exposure of mice to 2450-MHz radiofrequency radiation (RFR)

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Maillefer, R.H.; Quock, R.M. (Univ. of Illinois, Rockford (United States))

1991-03-11

This study was conducted to determine whether exposure to RFR might induce sufficient thermal stress to activate endogenous opioid mechanisms and induce analgesia. Male Swiss Webster mice, 20-25 g, were exposed to 10, 15 or 20 mV/cm{sup 2} RFR in a 2,450-MHz waveguide system for 10 min, then tested in the abdominal constriction paradigm. Specific absorption rates (SAR) were 23.7 W/kg at 10 mW/cm{sup 2}, 34.6 W/kg at 15 mW/cm{sup 2} and 45.5 W/kg at 20 mW/cm{sup 2}. Confinement in the exposure chamber alone did not appreciably alter body temperature but did appear to induce a stress-associated analgesia that was insensitive to the opioid receptor blocker naltrexone. Exposure of confined mice to RFR elevated body temperature and further increased analgesia in SAR-dependent manner. The high-SAR RFR-induced analgesia, but not the hyperthermia, was reduced by naltrexone. These findings suggest that (1) RFR produces SAR-dependent hyperthermia and analgesia and (2) RFR-induced analgesia is mediated by opioid mechanisms while confinement-induced analgesia involves non-opioid mechanisms.

Fatores relacionados ao uso de analgesia sistêmica em neonatologia Factors related to use of systemic analgesia in neonatology

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Carmen Lúcia Guimarães de Aymar

2008-12-01

Full Text Available O objetivo desse trabalho foi realizar uma revisão da literatura sobre o histórico e o estágio atual de conhecimento sobre a analgesia sistêmica em neonatologia e os fatores que influenciam a sua utilização. Foi realizada busca de artigos científicos através das bases dados do MEDLINE, SciELO e LILACS com as palavras chave: analgesia, analgésicos sistêmicos, dor, neonatologia, recém-nascido, unidade de terapia intensiva e unidade de terapia intensiva neonatal, além de pesquisa adicional em bancos de dados de dissertações, teses e livros texto. A literatura consultada revela que a analgesia não é uma prática rotineira nas unidades de terapia intensiva neonatal, de uma forma geral, apesar dos inúmeros estudos demonstrando a importância do tema. Apesar de ser o alívio da dor um dos princípios básicos da medicina, de envolver questões éticas e humanitárias, e de estarem disponíveis atualmente vários guias práticos e consensos a respeito do manejo da dor no neonato de risco, os resultados encontrados no presente estudo estão muito aquém das recomendações atuais, tornando-se necessária uma intervenção urgente para reverter a situação observada.The purpose of this paper was to carry out a review of literature on the history and current stage of the knowledge of systemic analgesia in neonatology and the factors influencing its use. A search for scientific articles was made in the MEDLINE, SciELO and LILACS databases using the keywords: analgesia, systemic analgesics, pain, neonatology, newborn, intensive care units and neonatal intensive care units. Additional research was made on dissertations and thesis databanks as well as text books. Literature consulted disclosed that, in general, analgesia is not a routine practice in neonatal intensive care units, despite the numerous studies demonstrating its importance. Although pain relief is a basic principle of medicine, involving ethic and humanitarian issues and despite

Opioid inhibition of N-type Ca2+ channels and spinal analgesia couple to alternative splicing.

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Andrade, Arturo; Denome, Sylvia; Jiang, Yu-Qiu; Marangoudakis, Spiro; Lipscombe, Diane

2010-10-01

Alternative pre-mRNA splicing occurs extensively in the nervous systems of complex organisms, including humans, considerably expanding the potential size of the proteome. Cell-specific alternative pre-mRNA splicing is thought to optimize protein function for specialized cellular tasks, but direct evidence for this is limited. Transmission of noxious thermal stimuli relies on the activity of N-type Ca(V)2.2 calcium channels in nociceptors. Using an exon-replacement strategy in mice, we show that mutually exclusive splicing patterns in the Ca(V)2.2 gene modulate N-type channel function in nociceptors, leading to a change in morphine analgesia. Exon 37a (e37a) enhances μ-opioid receptor-mediated inhibition of N-type calcium channels by promoting activity-independent inhibition. In the absence of e37a, spinal morphine analgesia is weakened in vivo but the basal response to noxious thermal stimuli is not altered. Our data suggest that highly specialized, discrete cellular responsiveness in vivo can be attributed to alternative splicing events regulated at the level of individual neurons.

Impact of Analgesia on the Course of Spontaneous Labor in Women with Diabetes Mellitus

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M. I. Neimark

2013-01-01

Full Text Available Objective: to improve the results of spontaneous labor in female patients with diabetes mellitus (DM. Subjects and methods. The results of physiological labor analgesia were analyzed in 140 patients. The parturients were divided into 3 groups: 1 40 parturients in whom analgesia was performed by the intravenous administration of promedol; 2 40 parturients in whom analgesia was done by the fractional administration of 0.2% ropivacaine hydrochloride into the epidural space; 3 40 parturients in whom analgesia was carried out with intravenous paracetamol 2000—3000 mg. In all the patients, the investigators estimated central hemodynamic parameters by echocardiography, the efficiency of labor analgesia according to the scale described by N. N. Rasstrigina and B. V. Shnaider, as well as blood glucose levels, fetal status by a cardiotocographic technique, and neonatal status by Apgar scores at 1 and 5 minutes of life. Results. Analgesia quality assessment established that the best analgesic effect was achieved in the patients in Group 2 where 75.0% of the parturients had 8—10 scores. A comparative analysis of carbohydrate metabolic parameters also ascertained that the most steady-state and physiological glycemic level was recorded in Group 2 patients throughout the study. In addition, epidural analgesia versus other analgesic techniques provides the most steady-state hemodynamic parameters during labor, which promotes improved labor and has a beneficial effect on fetal and neonatal states. Conclusion. Glycemic levels during labor and delivery can be optimized in patients with DM only if adequate analgesia is achieved. By ensuring adequate labor analgesia, epidural analgesia normalizes glycemic and central hemodynamic parameters, favors elimination of delivery abnormalities, and has a beneficial effect on fetal and neonatal states. Key words: epidural analgesia, diabetes mellitus, spontaneous labor.

Analgesia and anaesthesia in childbirth: obscurantism and obfuscation.

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Mander, R

1998-07-01

The terms 'analgesia' and 'anaesthesia' have been defined by emphasizing differing aspects of their effects. The distinction between these interventions has not been clarified by their definitions. The historical remedies for pain were similarly unclear. This lack of clarity is apparent in the introduction of chloroform in childbirth, which has much in common with the introduction and effects of epidural analgesia. The reasons for and benefits of this lack of clarity are examined.

Patient-controlled analgesia after coronary bypass: Remifentanil or sufentanil?

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Alavi, Seyed Mostafa; Ghoreishi, Seyed Mohammadmehran; Chitsazan, Mitra; Ghandi, Iman; Fard, Alireza Jahangiri; Hosseini, Seyed Saeed; Mahjoobifard, Maziar; Fani, Kamal

2014-07-01

adequate pain control after cardiac surgery is mandatory to reduce its remarkable morbidity. In this study, we aimed to compare the efficacy of patient-controlled analgesia with remifentanil or sufentanil for pain management after coronary artery bypass grafting. 249 patients who underwent coronary artery bypass were randomly assigned to receive patient-controlled analgesia with remifentanil or sufentanil during the first 24 h postoperatively. Pain intensity during patient-controlled analgesia was assessed using 4 different pain rating scales. patients given remifentanil had lower Visual Analog Scale scores at 24 h compared to those given sufentanil (p = 0.002). The Numeric Rating Scale at 24 h was also significantly lower in patients using remifentanil (p = 0.004). The Faces Pain Scale scores at 4, 18, and 24 h were significantly lower in patients using remifentanil compared to those using sufentanil (p = 0.045, 0.036, and 0.011, respectively). No significant differences between groups were seen in the pain intensity assessed by the Behavior Rating Scale at any time point during the first 24 h postoperatively. our study showed that both remifentanil and sufentanil patient-controlled analgesia can provide acceptable analgesia after coronary artery bypass. The difference between their efficacies was inconspicuous until 24 h postoperatively. Remifentanil seems to result in better pain relief at 24 h postoperatively. © The Author(s) 2013 Reprints and permissions: sagepub.co.uk/journalsPermissions.nav.

Topical sucralfate treatment of anal fistulotomy wounds: a randomized placebo-controlled trial.

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Gupta, Pravin J; Heda, Purushottam S; Shrirao, Subhash A; Kalaskar, Surekha S

2011-06-01

Sucralfate is a cytoprotective agent which adheres to mucoproteins and forms a protective barrier at wound sites. In oral form it is a common ulcer medication, and as a topical preparation it has been used to treat a wide variety of wounds. The present study was designed to evaluate the effectiveness and safety of topical sucralfate in wound healing after anal fistulotomy. Double-blind, randomized controlled study comparing topical application of sucralfate or placebo. Private outpatient clinic specializing in anorectal disease in Nagpur, India. Patients with a wound length of at least 5 cm after low anal fistulotomy were eligible for the study. Patients were randomly assigned to receive ointment containing 7% sucralfate or a placebo ointment consisting of petroleum jelly. Patients were instructed to apply approximately 3 g of ointment to the wound twice daily after a sitz bath for 6 weeks or until the wound had healed. The wounds were examined by a blinded independent observer at 2, 4, and 6 weeks after the operation. The primary end point was the proportion of patients with wounds that had completely healed. Secondary end points included amount of mucosal covering (scored by the observer), adverse events, and postoperative pain (self-rated on a visual analog scale). Of 80 participants (29 women, 51 men; median age, 23 (range, 17-49) years), 76 participants completed the trial (sucralfate, 39; placebo, 37). At 6-week follow-up, complete wound healing was achieved in 37 patients (95%) in the sucralfate group and 27 patients (73%) in the placebo group (P = .009). Mucosal coverage of the wound was significantly greater with sucralfate than with placebo at each measurement point (P = .01). No adverse events were observed. Postoperative pain scores were significantly lower for sucralfate than for placebo at 2 and 4 weeks after the start of treatment. Wound tissue specimens were not available for morphological and ultrastructural analysis. The results of this study add

Labor analgesia with ropivacaine added to clonidine: a randomized clinical trial

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Giane Nakamura

Full Text Available CONTEXT AND OBJECTIVE: Previous studies have led to speculation that the association between ropivacaine and clonidine might be more effective than ropivacaine alone. We examined the maternal-fetal effects of two pharmacological approaches: a low dose of ropivacaine or a lower dose of ropivacaine plus clonidine for epidural analgesia during labor. DESIGN AND SETTING: Prospective study at Department of Anesthesiology, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista. METHODS: Thirty-two pregnant women in American Society of Anesthesiologists physical status I and II randomly underwent epidural analgesia using 15 ml of ropivacaine 0.125% (R group or 15 ml of ropivacaine 0.0625% plus 75 µg clonidine (RC group. Pain intensity, sensory block level, latency time, motor block intensity, duration of labor analgesia and duration of epidural analgesia were evaluated. The newborns were evaluated using Apgar scores and the Amiel-Tison method (neurological and adaptive capacity score. RESULTS: There were no statistically significant differences between the groups regarding pain score, sensory block level, duration of epidural analgesia or Apgar score. The latency time, duration of labor analgesia and motor block were R group < RC group. The half-hour and two-hour neurological and adaptive capacity scores were higher in the R group. All of the R group newborns and 75% of the RC group newborns were found to be neurologically healthy at the 24-hour examination. RESULTS: There were no statistically significant differences between the groups regarding pain score, sensory block level, duration of epidural analgesia or Apgar score. The latency time, duration of labor analgesia and motor block were R group < RC group. The half-hour and two-hour neurological and adaptive capacity scores were higher in the R group. All of the R group newborns and 75% of the RC group newborns were found to be neurologically healthy at the 24-hour examination

Efficacy of the Bilateral Ilioinguinal-Iliohypogastric Block with Intrathecal Morphine for Postoperative Cesarean Delivery Analgesia

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Manuel C. Vallejo

2012-01-01

Full Text Available The ilioinguinal-iliohypogastric (IIIH block is frequently used as multimodal analgesia for lower abdominal surgeries. The aim of this study is to compare the efficacy of IIIH block using ultrasound visualization for reducing postoperative pain after caesarean delivery (CD in patients receiving intrathecal morphine (ITM under spinal anesthesia. Participants were randomly assigned to 1 of 3 treatment groups for the bilateral IIIH block: Group A = 10 mL of 0.5% bupivacaine, Group B = 10 mL of 0.5% bupivacaine on one side and 10 mL of a normal saline (NSS placebo block on the opposite side, and Group C = 10 mL of NSS placebo per side. Pain and nausea scores, treatment for pain and nausea, and patient satisfaction were recorded for 48 hours after CD. No differences were noted with respect to pain scores or treatment for pain over the 48 hours. There were no differences to the presence of nausea (P=0.64, treatment for nausea (P=0.21, pruritus (P=0.39, emesis (P=0.35, or patient satisfaction (P=0.29. There were no differences in pain and nausea scores over the measured time periods (MANOVA, P>0.05. In parturients receiving ITM for elective CD, IIIH block offers no additional postoperative benefit for up to 48 hours.

Expectant fathers' experience during labor with or without epidural analgesia.

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Capogna, G; Camorcia, M; Stirparo, S

2007-04-01

For men the worst aspect of childbirth is witnessing their partner in pain. The aim of this study was to investigate fathers' attitudes towards labor and delivery with and without epidural analgesia. The study was performed using a questionnaire that included yes/no, multiple choice or 6-point ordinal scale answers. Expectant fathers whose partners were nullipara between 36 and 38 weeks of gestation were recruited and the questionnaires were administered on the day after the birth. To investigate paternal anxiety during labor, the State part of the State-Trait Anxiety Inventory was used. The questionnaire was completed by 243 fathers. Sixty percent (145) of the parturients received epidural analgesia and 40% (98) did not. Paternal characteristics were comparable. Fathers whose partners did not receive epidural analgesia felt their presence as troublesome and unnecessary (Pinvolvement (Pfathers whose partners did not or did receive epidural analgesia (Pinvolvement, participation and satisfaction with the experience of childbirth.

Obstetric regional analgesia in the Jesenice General hospital in year 2006

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Aleksandra Kern

2007-11-01

Full Text Available Background: The aim of this retrospective analysis of the obstetric regional analgesia (ORA in Jesenice General Hospital in year 2006 was to evaluate our work and present results. We analysed workload, quality of the analgesia and patients’ satisfaction. We also estimated the OR for vacuum extraction (VE in nulliparous labouring women having ORA. We compared quality of analgesia and total local analgesic consumption in nulliparous women having VE or spontaneous delivery.Methods: We performed retrospective analysis of labours with ORA in year 2006. All women received epiduraly mixture of 0.1 % bupivacaine with 2 µg of fentanyl per ml in intermittent boluses.The labour pain was assessed using visual analogue scale (VAS. We used median and interquartile range to describe distribution of these values and mean with standard deviation to describe distribution of other data (local anaesthetic consumption. We considered patient with pain VAS 3 or less adequately treated, VAS 4 and 5 sufficiently and VAS 6 and more insufficiently treated. We used odds ratio as measurement of risk for VE, t-test for differences in local anaesthetic consumption and Mann-Whitney test to evaluate differences in pain between tested groups.Results: 225 labouring women opted for ORA or 38 % of all labouring women in year 2006. We performed 224 ORA, 59 % during regular work, 41 % during turn of duty. 18 % of ORA were performed between 10 p.m. and 7.00 a.m. In 98 % of cases epidural analgesia was used. Anaesthesiologic work took 16 minutes in average (SD 6.06. Analgesia was started at VAS median 5 (IQR 4–6.5 and at average cervical dilatation 4.1 cm (SD 1.4. Average consumption of bupivacaine was 55 mg (SD 23.7 and fentanyl 91.7 µg (SD 46.5. Most common complications were inadequate analgesia, and misplacement of epidural catheter (10/222, dural tap (6/222, and unilateral analgesia (2/222. 70 labours were ended with VE (13 %; n = 532. There were 27 (8.7 %; n = 309 VE in

Effect of aquapuncture on postoperative analgesia after ovariohysterectomy in dogs

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Stelio Luna

2015-07-01

Full Text Available Aquapuncture (AqP consists of a water or saline solution injection into acupoints. This study aimed to evaluate the effect of aquapuncture on post-operative analgesia in bitches submitted to elective ovariohysterectomy (OHE. The study was prospective, randomised, and blinded for pain assessment. Sixteen dogs were randomly distributed in two groups of eight animals each. All animals were sedated with 0.05 mg kg-1 of acepromazine intramuscularly (IM, 30 minutes prior to induction of anaesthesia with propofol and maintenance with isoflurane. Eight animals underwent bilateral acupoint injection with 0.1 ml of 0.9% saline (AqP at Gall Bladder 34, Stomach 36, Liver 3 and Spleen 6 acupoints 15 minutes after sedation. Pain score was investigated after 0.5, 1, 2, 5, 8 and 24 hours post-operatively and was compared with a control untreated group of eight animals. Morphine, at 0.5 mg kg-1 IM, was administered when the numerical rating scale was above 33% of the maximum value, in order to control post-operative pain in both groups. There were no differences in cardiorespiratory variables and pain and sedation scores between the groups. Seven (87.5% animals from the control group required rescue analgesia at the first two postoperative hours and five (62.5% animals treated with AqP required rescue analgesia, however, only one (12.5% animal was treated at the first two hours and the remaining animals were treated from 5 hours after surgery. Aquapuncture produced residual analgesia up to 5 h after surgery and may be an option for post-operative analgesia in bitches undergoing OHE, providing that pain is assessed and rescue analgesia administered if necessary.

Neonatal morphine enhances nociception and decreases analgesia in young rats.

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Zhang, Guo Hua; Sweitzer, Sarah M

2008-03-14

The recognition of the impact of neonatal pain experience on subsequent sensory processing has led to the increased advocacy for the use of opioids for pain relief in infants. However, following long-term opioid exposure in intensive care units more than 48% of infants exhibited behaviors indicative of opioid abstinence syndrome, a developmentally equivalent set of behaviors to opioid withdrawal as seen in adults. Little is known about the long-term influence of repeated neonatal morphine exposure on nociception and analgesia. To investigate this, we examined mechanical and thermal nociception on postnatal days 11, 13, 15, 19, 24, 29, 39 and 48 following subcutaneous administration of morphine (3 mg/kg) once daily on postnatal days 1-9. The cumulative morphine dose-response was assessed on postnatal days 20 and 49, and stress-induced analgesia was assessed on postnatal days 29 and 49. Both basal mechanical and thermal nociception in neonatal, morphine-exposed rats were significantly lower than those in saline-exposed, handled-control rats and naive rats until P29. A rightward-shift of cumulative dose-response curves for morphine analgesia upon chronic neonatal morphine was observed both on P20 and P49. The swim stress-induced analgesia was significantly decreased in neonatal morphine-exposed rats on P29, but not on P49. These data indicate that morphine exposure equivalent to the third trimester of gestation produced prolonged pain hypersensitivity, decreased morphine antinociception, and decreased stress-induced analgesia. The present study illustrates the need to examine the long-term influence of prenatal morphine exposure on pain and analgesia in the human pediatric population.

Sex-dependent effects of cannabis-induced analgesia.

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Cooper, Ziva D; Haney, Margaret

2016-10-01

Preclinical studies demonstrate that cannabinoid-mediated antinociceptive effects vary according to sex; it is unknown if these findings extend to humans. This retrospective analysis compared the analgesic, subjective and physiological effects of active cannabis (3.56-5.60% THC) and inactive cannabis (0.00% THC) in male (N=21) and female (N=21) cannabis smokers under double-blind, placebo-controlled conditions. Pain response was measured using the Cold-Pressor Test (CPT). Participants immersed their hand in cold water (4°C); times to report pain (pain sensitivity) and withdraw the hand (pain tolerance) were recorded. Subjective drug ratings were also measured. Among men, active cannabis significantly decreased pain sensitivity relative to inactive cannabis (pcannabis failed to decrease pain sensitivity relative to inactive. Active cannabis increased pain tolerance in both men women immediately after smoking (pcannabis also increased subjective ratings of cannabis associated with abuse liability ('Take again,' 'Liking,' 'Good drug effect'), drug strength, and 'High' relative to inactive in both men and women (pcannabis smokers, men exhibit greater cannabis-induced analgesia relative to women. These sex-dependent differences are independent of cannabis-elicited subjective effects associated with abuse-liability, which were consistent between men and women. As such, sex-dependent differences in cannabis's analgesic effects are an important consideration that warrants further investigation when considering the potential therapeutic effects of cannabinoids for pain relief. Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.

Intravenous paracetamol for relief of pain during transrectal-ultrasound-guided biopsy of the prostate: A prospective, randomized, double-blind, placebo-controlled study

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Ozcan Kilic

2015-11-01

Full Text Available Transrectal-ultrasound-guided prostate biopsy (TRUS-PBx is the standard procedure for diagnosing prostate cancer. The procedure does cause some pain and discomfort; therefore, an adequate analgesia is necessary to ensure patient comfort, which can also facilitate good-quality results. This prospective, randomized, double-blinded, placebo-controlled study aimed to determine if intravenous (IV paracetamol can reduce the severity of pain associated with TRUS-PBx. The study included 104 patients, scheduled to undergo TRUS-PBx with a suspicion of prostate cancer, that were prospectively randomized to receive either IV paracetamol (paracetamol group or placebo (placebo group 30 minutes prior to TRUS-PBx. All patients had 12 standardized biopsy samples taken. Pain was measured using a 10-point visual analog pain scale during probe insertion, during the biopsy procedure, and 1 hour postbiopsy. All biopsies were performed by the same urologist, whereas a different urologist administered the visual analog pain scale. There were not any significant differences in age, prostate-specific antigen level, or prostate volume between the two groups. The pain scores were significantly lower during probe insertion, biopsy procedure, and 1 hour postbiopsy in the paracetamol group than in the placebo group. In conclusion, the IV administration of paracetamol significantly reduced the severity of pain associated with TRUS-PBx.

21 CFR 868.5160 - Gas machine for anesthesia or analgesia.

Science.gov (United States)

2010-04-01

... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Gas machine for anesthesia or analgesia. 868.5160... (CONTINUED) MEDICAL DEVICES ANESTHESIOLOGY DEVICES Therapeutic Devices § 868.5160 Gas machine for anesthesia or analgesia. (a) Gas machine for anesthesia—(1) Identification. A gas machine for anesthesia is a...

Remifentanil patient controlled analgesia versus epidural analgesia in labour. A multicentre randomized controlled trial.

NARCIS (Netherlands)

Freeman, L.M.; Bloemenkamp, K.W.; Franssen, M.T.; Papatsonis, D.N.; Hajenius, P.J.; Huizen, M.E. van; Bremer, H.A.; Akker, E.S. van den; Woiski, M.D.; Porath, M.M.; Beek, E. van; Schuitemaker, N.; Salm, P.C. van der; Fong, B.F.; Radder, C.; Bax, C.J.; Sikkema, M.; Akker-van Marle, M.E. van den; Lith, J.M. van; Lopriore, E.; Uildriks, R.J.; Struys, M.M.; Mol, B.W.; Dahan, A; Middeldorp, J.M.

2012-01-01

ABSTRACT: BACKGROUND: Pain relief during labour is a topic of major interest in the Netherlands. Epidural analgesia is considered to be the most effective method of pain relief and recommended as first choice. However its uptake by pregnant women is limited compared to other western countries,

[Eutopic parturition: psychoprophylaxis or extradural analgesia. Influence on the endocrine response].

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Carrasco, M S; Iglesias, J; Freire, J; Martín, M L; Marín Santana, A; Cobo, I; García Rendón, A

1989-01-01

Prolactin, ACTH, cortisol and HGH levels have been studied on 30 pregnant women in three different periods: during the labour, at the delivery and 24 hours later. They were divided into 3 groups depending on the analgesia: I) no analgesia (n = 10); II) psychoprophylaxis (n = 10), and III) extradural analgesia (n = 10). Prolactin levels increased during delivery and 24 hours later. A significant increase of ACTH levels (p less than 0.01) was observed during the delivery in the 3 groups even though they were under hasal values 24 hours later. Cortisol increased 38% (p less than 0.01) and 52% (p less than 0.02) in II and III groups, respectively during the delivery. No difference was found with HGH. Our results suggest that endocrine response modified by labour and delivery doesn't change with different analgesia techniques.

Unpredictability of regression of analgesia during the continuous postoperative extradural infusion of bupivacaine

DEFF Research Database (Denmark)

Mogensen, T; Hjortsø, N C; Bigler, D

1988-01-01

Twenty-four otherwise healthy patients scheduled for elective major abdominal surgery received general anaesthesia plus lumbar extradural analgesia. A loading dose of 0.5% plain bupivacaine was given to produce sensory analgesia (pin prick) from T4 to S5 and followed by a continuous infusion of 0.......5% plain bupivacaine 8 ml h-1. Pain, scored on a 5-point scale, and sensory analgesia were assessed hourly for 16 h after skin incision. If sensory analgesia decreased by more than 5 segments from its preoperative level, or if the pain score reached 2 (moderate pain), the patients were removed from...

Perinatal and neonatal use of sedation and analgesia.

Science.gov (United States)

McPherson, Christopher; Inder, Terrie

2017-10-01

Optimal obstetric and neonatal care requires the provision of adequate analgesia for painful procedures. However, anesthetic and analgesic agents have the potential to adversely impact the developing fetal/neonatal brain. In this setting, clinicians must assess the risks and benefits of pharmacologic anesthesia and analgesia for specific indications in this population. General anesthesia is required for non-obstetric surgery and cesarean section in the absence of neuraxial anesthesia for the health of the mother and fetus. Although experimental data raise concerns, human data are reassuring and future research may focus on neuroprotective adjuncts in the setting of repeated or prolonged anesthetic exposures. Opioid analgesia is standard of care for preterm infants undergoing major procedures including invasive surgery and endotracheal intubation. The use of opioids for agitation resulting from mechanical ventilation is controversial, but prevalent. Randomized and retrospective studies detect short-term toxicity with inconclusive long-term impact, suggesting the need to explore alternative therapies. Copyright © 2017 Elsevier Ltd. All rights reserved.

Epidural Analgesia and Fever at Labor

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Ye. M. Shifman

2008-01-01

Full Text Available Objective: to study the incidence of labor fever under epidural analgesia (EA and to evaluate its impact on the courses of puerperium and early neonatality. Subjects and methods. The paper presents the data of a prospective study of the course of labor, puerperium, and early neonatality in 397 women in whom labors occurred at the Republican Peritoneal Center in 2006. A study group included 324 parturients in whom labor pain was relieved by EA. A comparison group comprised 55 parturients in whom no analgesics were used at labor. Results. There were no significant statistical differences between the groups in the incidence of labor fever and complicated puerperium and in that of neonatal pyoseptic diseases. Key words: labor hyperthermia, epidural analgesia, labor pain relief.

Remifentanil patient controlled analgesia versus epidural analgesia in labour. A multicentre randomized controlled trial

NARCIS (Netherlands)

Freeman, Liv M.; Bloemenkamp, Kitty W. M.; Franssen, Maureen T. M.; Papatsonis, Dimitri N. M.; Hajenius, Petra J.; van Huizen, Marloes E.; Bremer, Henk A.; van den Akker, Eline S. A.; Woiski, Mallory D.; Porath, Martina M.; van Beek, Erik; Schuitemaker, Nico; van der Salm, Paulien C. M.; Fong, Bianca F.; Radder, Celine; Bax, Caroline J.; Sikkema, Marko; van den Akker-van Marle, M. Elske; van Lith, Jan M. M.; Lopriore, Enrico; Uildriks, Renske J.; Struys, Michel M. R. F.; Mol, Ben Willem J.; Dahan, Albert; Middeldorp, Johanna M.

2012-01-01

Background: Pain relief during labour is a topic of major interest in the Netherlands. Epidural analgesia is considered to be the most effective method of pain relief and recommended as first choice. However its uptake by pregnant women is limited compared to other western countries, partly as a

HYPNOTIZABILITY AND PAIN MODULATION: A Body-Mind Perspective.

Science.gov (United States)

Varanini, Maurizio; Balocchi, Rita; Carli, Giancarlo; Paoletti, Giulia; Santarcangelo, Enrica L

2018-01-01

The study investigated whether the cardiac activity and cognitive-emotional traits sustained by the behavioral inhibition/activation system (BIS/BAS) may contribute to hypnotizability-related pain modulation. Nociceptive stimulation (cold-pressor test) was administered to healthy participants with high (highs) and low (lows) hypnotizability in the presence and absence of suggestions for analgesia. Results showed that heart rate increased abruptly at the beginning of nociceptive stimulation in all participants. Then, only in highs heart rate decreased for the entire duration of hand immersion. During stimulation with suggestions of analgesia, pain threshold negatively correlated with heart rate. BIS/BAS activity partially accounted for the observed hypnotizability-related differences in the relation between cardiac interoception and pain experience.

Sex-dependent components of the analgesia produced by athletic competition.

Science.gov (United States)

Sternberg, W F; Bokat, C; Kass, L; Alboyadjian, A; Gracely, R H

2001-02-01

Competing in various athletic events (track meet, basketball game, or fencing match) can produce analgesia to cold pressor stimuli in male and female college athletes compared with baseline assessments. This competition-induced analgesia has been attributed to the stress associated with competition, which has components related to both physical exercise and the cognitive aspects of competing. This study evaluated the analgesic effect of exercise-related stress, and that caused by the cognitively stressful components of competing independent of exercise. Cold pressor pain ratings were assessed after competition in a track meet and after treadmill exercise or sedentary video game competition in both athletes and nonathletes. As expected, competing in athletics resulted in a decrease in cold pressor ratings in both male and female athletes. Independent of athletic status, treadmill running induced analgesia in women, but not in males, whereas sedentary video game competition produced analgesia in men, but not in women. These findings suggest that different components of the competitive athletic experience might be responsible for the analgesic effects in a sex-dependent manner.

Usefulness of modified intravenous analgesia: initial experience in uterine artery embolization for leiomyomata

International Nuclear Information System (INIS)

Yang, Seung Boo; Jung, Young Jin; Goo, Dong Erk; Jang, Yun Woo

2006-01-01

We wanted to evaluate the usefulness of modified intravenous analgesia for the management of pain during uterine artery embolization for leiomyomata. Between April 2004 and July 2004, 15 patients with symptomatic fibroids underwent uterine artery embolization and pain management. Except the three patients for whom the Visual Analogue Scale (VAS) score was not obtained, twelve patients were included in this study. For pain management, epidural PCA (Patient Controlled Analgesia) was used in two patients, intravenous PCA was used in two patients and modified intravenous analgesia injection was used in eight patients. For all the patients, we used the 2.8 Fr coaxial microcatheter and 500-710 μ m PVA particles for the embolic materials. The protocol of the modified intravenous analgesia injection was as follow, 1) prior to femoral artery puncture, 30 mg of ketorolac tromethamine (Tarasyn)was injected via an intravenous route. 2) At the time that the one side uterine artery embolization was finished, normal saline mixed 150 mg meperidine (Demerol) was administered through the side port of the intravenous line that was used for hydration. 3) Additional ketorolac tromethamine 30 mg was injected after 6 hour. The VAS score and side effects were then checked. After 12 hours, the VAS score was rechecked. If the VAS score was above 4, this was considered as failure of pain management. The VAS scores, complications and side effects for the modified intravenous analgesia injection were compared with that of IV PCA and epidural PCA. The average VAS score of the modified intravenous analgesia injection, intravenous PCA and epidural PCA was 1.4, 1 and 0, respectively; the number of additional intramuscular injections of analgesia was 0.5, 0.5 and 0, respectively. All the patients who underwent epidural PCA had back pain at the puncture site and 1 patient who underwent modified intravenous analgesia injection experienced mild dyspnea, but they easily recovered with such

Usefulness of modified intravenous analgesia: initial experience in uterine artery embolization for leiomyomata

Energy Technology Data Exchange (ETDEWEB)

Yang, Seung Boo; Jung, Young Jin [Soonchunhyang University, Gumi Hospital, Gumi (Korea, Republic of); Goo, Dong Erk; Jang, Yun Woo [Soonchunhyang University Hospital, Seoul (Korea, Republic of)

2006-04-15

We wanted to evaluate the usefulness of modified intravenous analgesia for the management of pain during uterine artery embolization for leiomyomata. Between April 2004 and July 2004, 15 patients with symptomatic fibroids underwent uterine artery embolization and pain management. Except the three patients for whom the Visual Analogue Scale (VAS) score was not obtained, twelve patients were included in this study. For pain management, epidural PCA (Patient Controlled Analgesia) was used in two patients, intravenous PCA was used in two patients and modified intravenous analgesia injection was used in eight patients. For all the patients, we used the 2.8 Fr coaxial microcatheter and 500-710 {mu} m PVA particles for the embolic materials. The protocol of the modified intravenous analgesia injection was as follow, 1) prior to femoral artery puncture, 30 mg of ketorolac tromethamine (Tarasyn)was injected via an intravenous route. 2) At the time that the one side uterine artery embolization was finished, normal saline mixed 150 mg meperidine (Demerol) was administered through the side port of the intravenous line that was used for hydration. 3) Additional ketorolac tromethamine 30 mg was injected after 6 hour. The VAS score and side effects were then checked. After 12 hours, the VAS score was rechecked. If the VAS score was above 4, this was considered as failure of pain management. The VAS scores, complications and side effects for the modified intravenous analgesia injection were compared with that of IV PCA and epidural PCA. The average VAS score of the modified intravenous analgesia injection, intravenous PCA and epidural PCA was 1.4, 1 and 0, respectively; the number of additional intramuscular injections of analgesia was 0.5, 0.5 and 0, respectively. All the patients who underwent epidural PCA had back pain at the puncture site and 1 patient who underwent modified intravenous analgesia injection experienced mild dyspnea, but they easily recovered with such

Intrathecal opioids versus epidural local anesthetics for labor analgesia: a meta-analysis.

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Bucklin, Brenda A; Chestnut, David H; Hawkins, Joy L

2002-01-01

Some anesthesiologists contend that intrathecal opioid administration has advantages over conventional epidural techniques during labor. Randomized clinical trials comparing analgesia and obstetric outcome using single-injection intrathecal opioids versus epidural local anesthetics suggest that intrathecal opioids provide comparable analgesia with few serious side effects. This meta-analysis compared the analgesic efficacy, side effects, and obstetric outcome of single-injection intrathecal opioid techniques versus epidural local anesthetics in laboring women. Relevant clinical studies were identified using electronic and manual searches of the literature covering the period from 1989 to 2000. Searches used the following descriptors: intrathecal analgesia, spinal opioids, epidural analgesia, epidural local anesthetics, and analgesia for labor. Data were extracted from 7 randomized clinical trials comparing analgesic measures, incidence of motor block, pruritus, nausea, hypotension, mode of delivery, and/or Apgar scores. Combined test results indicated comparable analgesic efficacy 15 to 20 minutes after injection with single-injection intrathecal opioid administration. Intrathecal opioid injections were associated with a greater incidence of pruritus (odds ratio, 14.01; 99% confidence interval, 6.9 to 28.3), but there was no difference in the incidence of nausea or in the method of delivery. Published studies suggest that intrathecal opioids provide comparable early labor analgesia when compared with epidural local anesthetics. Intrathecal opioid administration results in a greater incidence of pruritus. The choice of technique does not appear to affect the method of delivery.

Intravenous remifentanil versus epidural ropivacaine with sufentanil for labour analgesia: a retrospective study.

Directory of Open Access Journals (Sweden)

Rong Lin

Full Text Available Remifentanil with appropriate pharmacological properties seems to be an ideal alternative to epidural analgesia during labour. A retrospective cohort study was undertaken to assess the efficacy and safety of remifentanil intravenous patient-controlled analgesia (IVPCA compared with epidural analgesia. Medical records of 370 primiparas who received remifentanil IVPCA or epidural analgesia were reviewed. Pain and sedation scores, overall satisfaction, the extent of pain control, maternal side effects and neonatal outcome as primary observational indicators were collected. There was a significant decline of pain scores in both groups. Pain reduction was greater in the epidural group throughout the whole study period (0 ∼ 180 min (P < 0.0001, and pain scores in the remifentanil group showed an increasing trend one hour later. The remifentanil group had a lower SpO2 (P < 0.0001 and a higher sedation score (P < 0.0001 within 30 min after treatment. The epidural group had a higher overall satisfaction score (3.8 ± 0.4 vs. 3.7 ± 0.6, P = 0.007 and pain relief score (2.9 ± 0.3 vs. 2.8 ± 0.4, P < 0.0001 compared with the remifentanil group. There was no significant difference on side effects between the two groups, except that a higher rate of dizziness (1% vs. 21.8%, P < 0.0001 was observed during remifentanil analgesia. And logistic regression analysis demonstrated that nausea, vomiting were associated with oxytocin usage and instrumental delivery, and dizziness was associated to the type and duration of analgesia. Neonatal outcomes such as Apgar scores and umbilical-cord blood gas analysis were within the normal range, but umbilical pH and base excess of neonatus in the remifentanil group were significantly lower. Remifentanil IVPCA provides poorer efficacy on labor analgesia than epidural analgesia, with more sedation on parturients and a trend of newborn acidosis. Despite these adverse effects, remifentanil IVPCA can still be an alternative

MULTIMODAL ANALGESIA AFTER TOTAL HIP ARTHROPLASTY

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I. G. Mukutsa

2012-01-01

Full Text Available Purpose - to assess the effect of multimodal analgesia in the early rehabilitation of patients after hip replacement. Materials and methods. A prospective single-centre randomized research, which included 32 patients. Patients of the 1st group received paracetamol, ketorolac and tramadol, the 2nd group of patients - ketorolac intravenously and the 3rd group of patients - etoricoxib and gabapentin. Patients of the 2nd and the 3rd groups underwent epidural analgesia with ropivacaine. Multimodal analgesia was carried out for 48 hours after the surgery. Assessment of pain intensity was performed by the VAS (visual analogue scale, a neuropathic pain component - on the DN4 questionnaire . Time was recorded during the first and second verticalization of patients, using the distance walkers and by fixing the distance covered with in 2 minutes. Results. The intensity of pain for more than 50 mm on VAS at movement at least once every 48 hours after the surgery was occurred among 9% of the 1st group, 22% of patients from the 2nd group and 8% of patients of the 3rd group. Number of patients with neuropathic pain component decreased from 25% to 3% (p ≤ 0.05. The first verticalization was performed 10 ± 8 hours after the surgery, the second - 21 ± 8 hours later. Two-minute walk distance was 5 ± 3 and 8 ± 4 m, respectively. It is noted more frequent adverse events in patients of the 1st group was noted compared to patients of the 2nd and the 3rd groups during first (91%, 33% and 25%, p ≤ 0.05 and the second verticalization (70%, 25% and 17%, p ≤ 0.05. Multimodal analgesia allows to proceed with the successful activation of patients after hip replacement with in the first day after the surgery. The 3rd group patients are noted with a tendency for the optimal combination of efficient and safe of analgetic therapy.

Placebo Effect

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... C. Spencer, MD Steven Karceski, MD The placebo effect Joseph H. Friedman, MD Richard Dubinsky, MD WHAT ... placebo: a “dummy” medication that should have no effect on the condition. Placebos are not only drugs. ...

Intravenous lidocaine for post-operative pain relief after hand-assisted laparoscopic colon surgery: a randomized, placebo-controlled clinical trial.

Science.gov (United States)

Tikuišis, R; Miliauskas, P; Samalavičius, N E; Žurauskas, A; Samalavičius, R; Zabulis, V

2014-04-01

Perioperative intravenous (IV) infusion of lidocaine has been shown to decrease post-operative pain, shorten time to return of bowel function, and reduce the length of hospital stay. This randomized, prospective, double-blinded, placebo-controlled clinical trial evaluated the impact of IV lidocaine on the quality of post-operative analgesia and other outcomes after hand-assisted laparoscopic colon surgery. Sixty four patients with colon cancer scheduled for elective colon resection were involved in this study. Patients were randomized to receive either lidocaine infusion [lidocaine group (LG)] or normal 0.9 % saline infusion [placebo group (PG)] for a period of 24 h. Anaesthetic and surgical techniques were standardized. Twenty-four-hour post-operative analgesia in the recovery area was maintained by continuous infusion of 0.1 μg/kg/h fentanyl. The primary outcome of the study was post-operative pain control. Pain was assessed using visual analogue scale (VAS) scores at 2, 4, 8, 12, and 24 h after surgery. Patients with a VAS score >3 were treated with ketorolac 30 mg as needed. Secondary outcomes included time to resumption of bowel function and length of hospital stay. Data in the two groups were compared using the two-tailed Student's t test. All statistical tests were two-tailed at a significance level of 0.05. Demographic characteristics and clinical features of both groups were similar. Intensity of pain at rest in LG compared with PG was significantly lower during the first 24 h post-operatively. LG patients reported significantly less pain during movements at 2-, 12-, and 24-h post-surgery than PG patients. The study showed that ketorolac consumption was significantly higher in PG: mean ketorolac consumption in LG was 43.77 ± 13.86 mg and in PG 51.67 ± 13.16 mg (p = 0.047). Compared with placebo, lidocaine infusion produced a 32 % reduction in time to the first drink (Cohen's d = 3.85), 16 % reduction in time to the first full diet

[Placebo and the relationship between doctors and patients. Overview].

Science.gov (United States)

Scriba, P C

2012-09-01

In medicine, placebos are used both in scientific studies and for practical therapeutic purposes. In evidence-based medicine, the efficacy of treatment may be determined as the difference between the effects of the verum (the active study drug) and the placebo, the latter being a substance lacking specific action on the disease under consideration. However, the improvements in patients' conditions under placebo treatment may be substantial and comparable to those with verum. Genuine placebos predominate in clinical studies, while pseudoplacebos prevail in practical therapy. The term pseudoplacebo can also be applied to many procedures in complementary medicine, including homeopathic medicine (Büchel et al., Placebo in der Medizin, 2011). The comprehensive definition of placebo, as used in a report by the German Medical Association (Büchel et al., Placebo in der Medizin, 2011), states that a placebo effect may occur even when treating with verum. The placebo effect is modulated by the context of the treatment, by the expectations of the patients and the doctors, and by the success of the relationship between doctors and patients. A number of unspecific effects, e.g., spontaneous alleviation, statistical effects, variance with time, methodological errors, in addition to the placebo effect make up the total response that is called"placebo reaction." A complete list of the effectiveness of placebo for all important diseases is still lacking. Further, it is not possible to predict which patients will respond to placebo. Which characteristics of doctors are important (competence, empathy, communicative ability and partnership, trust) in order to achieve a placebo effect, particularly in addition to the verum effect measures of evidence-based medicine? Are there doctors who are better in this than others? Could the nocebo effect weaken the efficacy of treatment in evidence-based medicine? Since a placebo effect may occur in almost any standard therapy, information about

The Role of the Brain's Endocannabinoid System in Pain and Its Modulation by Stress.

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Corcoran, Louise; Roche, Michelle; Finn, David P

2015-01-01

Stress has a complex, bidirectional modulatory influence on pain. Stress may either reduce (stress-induced analgesia) or exacerbate (stress-induced hyperalgesia) pain depending on the nature, duration, and intensity of the stressor. The endogenous cannabinoid (endocannabinoid) system is present throughout the neuroanatomical pathways that mediate and modulate responses to painful stimuli. The specific role of the endocannabinoid system in the brain in pain and the modulation of pain by stress is reviewed herein. We first provide a brief overview of the endocannabinoid system, followed by a review of the evidence that the brain's endocannabinoid system modulates pain. We provide a comprehensive evaluation of the role of the endocannabinoid system supraspinally, and particularly in the rostral ventromedial medulla, periaqueductal gray, amygdala, and prefrontal cortex, in pain, stress-induced analgesia, and stress-induced hyperalgesia. Increased understanding of endocannabinoid-mediated regulation of pain and its modulation by stress will inform the development of novel therapeutic approaches for pain and its comorbidity with stress-related disorders. © 2015 Elsevier Inc. All rights reserved.

Subcutaneous L-tyrosine elicits cutaneous analgesia in response to local skin pinprick in rats.

Science.gov (United States)

Hung, Ching-Hsia; Chiu, Chong-Chi; Liu, Kuo-Sheng; Chen, Yu-Wen; Wang, Jhi-Joung

2015-10-15

The purpose of the study was to estimate the ability of L-tyrosine to induce cutaneous analgesia and to investigate the interaction between L-tyrosine and the local anesthetic lidocaine. After subcutaneously injecting the rats with L-tyrosine and lidocaine in a dose-dependent manner, cutaneous analgesia (by blocking the cutaneous trunci muscle reflex-CTMR) was evaluated in response to the local pinprick. The drug-drug interaction was analyzed by using an isobolographic method. We showed that both L-tyrosine and lidocaine produced dose-dependent cutaneous analgesia. On the 50% effective dose (ED50) basis, the rank of drug potency was lidocaine (5.09 [4.88-5.38] μmol)>L-tyrosine (39.1 [36.5-41.8] μmol) (Ptyrosine lasted longer than that caused by lidocaine (Ptyrosine exhibited an additive effect on infiltrative cutaneous analgesia. Our pre-clinical study demonstrated that L-tyrosine elicits the local/cutaneous analgesia, and the interaction between L-tyrosine and lidocaine is additive. L-tyrosine has a lower potency but much greater duration of cutaneous analgesia than lidocaine. Adding L-tyrosine to lidocaine preparations showed greater duration of cutaneous analgesia compared with lidocaine alone. Copyright © 2015 Elsevier B.V. All rights reserved.

Intranasal sufentanil/ketamine analgesia in children

DEFF Research Database (Denmark)

Nielsen, Bettina Nygaard; Friis, Susanne M; Rømsing, Janne

2014-01-01

The management of procedural pain in children ranges from physical restraint to pharmacological interventions. Pediatric formulations that permit accurate dosing, are accepted by children and a have a rapid onset of analgesia are lacking....

Postoperative pain management with transdermal fentanyl after forefoot surgery: a randomized, placebo-controlled study

Directory of Open Access Journals (Sweden)

Merivirta R

2015-01-01

Full Text Available Riika Merivirta,1 Mikko Pitkänen,2 Jouko Alanen,3 Elina Haapoja,1 Mari Koivisto,4 Kristiina Kuusniemi11Department of Anaesthesiology, Intensive Care, Emergency Care and Pain Medicine of Turku University Hospital and University of Turku, Turku, 2Department of Anaesthesia, Hospital Orton, Invalid Foundation, Helsinki, 3Terveystalo Clinic Hospital, Helsinki, 4Department of Biostatistics, University of Turku, Turku, FinlandBackground: Quality of life is decreased in patients with hallux valgus deformity, mainly because of pain. Significant improvement is usually achieved by surgery. However, postoperative pain can be moderate to severe for 2–3 days. The aim of the present study was to evaluate the use of transdermal fentanyl for postoperative pain management after forefoot surgery.Methods: Sixty patients undergoing hallux valgus or hallux rigidus surgery were allocated to receive a patch delivering either fentanyl 12 µg/hour or placebo for postoperative pain. The consumption of rescue opioid oxycodone, the primary outcome measure, was evaluated daily until the fourth postoperative day. Total consumption of oxycodone during the study period was also assessed. Pain scores and possible adverse effects were evaluated every 6 hours during the first 24 hours and on the fourth postoperative day.Results: The use of rescue opioid was low in both groups, the median (range consumption of oxycodone being 10 (0–50 mg on the day of surgery (no difference between the groups, P=0.31 and 0 (0–35 mg thereafter. The total combined consumption was 10 (0–105 mg in the fentanyl group and 20 (0–70 mg in the placebo group (P=0.23. There were no statistically significant differences in pain scores or adverse effects between the groups.Conclusion: As a part of multimodal analgesia with ibuprofen and acetaminophen, a patch delivering fentanyl 12 µg/hour did not significantly decrease the consumption of rescue opioid or pain scores after forefoot surgery

Compreendendo o Efeito Placebo / Understanding the Placebo Effect

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Elayne Vieira Dias

2015-12-01

Full Text Available Placebo é definido em termos farmacológicos como uma substância inerte, sem propriedades farmacológicas intrínsecas. No entanto, essa definição é superficial, visto que o placebo pode gerar efeitos terapêuticos que dependem de diversos fatores como palavras, rituais, símbolos e significados que acompanham seu uso. Assim, o efeito placebo não diz respeito apenas a uma substância, mas, envolve fatores cognitivos, genéticos e mecanismos de aprendizagem implícita e explícita. Nessa revisão nós abordamos os aspectos gerais do efeito placebo apoiados em diversos estudos com diferentes enfoques, visando uma melhor compreensão desse fenômeno que pode se somar ao tratamento ativo e otimizar os resultados na prática médica. Placebo is pharmacologically defined as an inert substance, with nointrinsic pharmacological properties. However, this is a superficial definition, since placebo may trigger therapeutic effects and its effectiveness depends on various factors such as words, rituals, symbols and meanings following its use. Thus, placebo effect does not refer just to the substance, but it also involves cognitive and genetic factors and learning mechanisms. Here, we review general aspects of the placebo effect supported by several studies with different approaches, to better understand this phenomenon which may contribute to active treatment as well as optimize the results in the clinical practice.

[PERIOPERATIVE ANALGESIA INFLUENCE ON MOTHER REHABILITATION PERIOD AFTER CESAREAN SECTION].

Science.gov (United States)

Sedykh, S V

2015-01-01

Early breast-feeding is a standard of perinatal care currently. After cesarean section it can be possible in case of early mother activation (verticalization). Assessment of perioperative analgesia influence on activation timing was the aim of our research. We included 120 parturient women. It was proved, that local analgesia using in postoperative period promotes early mother verticaliration, and optimal breast-feeding starting.

Staff education, regular sedation and analgesia quality feedback, and a sedation monitoring technology for improving sedation and analgesia quality for critically ill, mechanically ventilated patients: a cluster randomised trial.

Science.gov (United States)

Walsh, Timothy S; Kydonaki, Kalliopi; Antonelli, Jean; Stephen, Jacqueline; Lee, Robert J; Everingham, Kirsty; Hanley, Janet; Phillips, Emma C; Uutela, Kimmo; Peltola, Petra; Cole, Stephen; Quasim, Tara; Ruddy, James; McDougall, Marcia; Davidson, Alan; Rutherford, John; Richards, Jonathan; Weir, Christopher J

2016-10-01

Optimal sedation of patients in intensive care units (ICUs) requires the avoidance of pain, agitation, and unnecessary deep sedation, but these outcomes are challenging to achieve. Excessive sedation can prolong ICU stay, whereas light sedation can increase pain and frightening memories, which are commonly recalled by ICU survivors. We aimed to assess the effectiveness of three interventions to improve sedation and analgesia quality: an online education programme; regular feedback of sedation-analgesia quality data; and use of a novel sedation-monitoring technology (the Responsiveness Index [RI]). We did a cluster randomised trial in eight ICUs, which were randomly allocated to receive education alone (two ICUs), education plus sedation-analgesia quality feedback (two ICUs), education plus RI monitoring technology (two ICUs), or all three interventions (two ICUs). Randomisation was done with computer-generated random permuted blocks, stratified according to recruitment start date. A 45 week baseline period was followed by a 45 week intervention period, separated by an 8 week implementation period in which the interventions were introduced. ICU and research staff were not masked to study group assignment during the intervention period. All mechanically ventilated patients were potentially eligible. We assessed patients' sedation-analgesia quality for each 12 h period of nursing care, and sedation-related adverse events daily. Our primary outcome was the proportion of care periods with optimal sedation-analgesia, defined as being free from excessive sedation, agitation, poor limb relaxation, and poor ventilator synchronisation. Analysis used multilevel generalised linear mixed modelling to explore intervention effects in a single model taking clustering and patient-level factors into account. A concurrent mixed-methods process evaluation was undertaken to help understand the trial findings. The trial is registered with ClinicalTrials.gov, number NCT01634451. Between

Postoperative analgesia and antiemetic efficacy after intrathecal neostigmine in patients undergoing abdominal hysterectomy during spinal anesthesia.

Science.gov (United States)

Lauretti, G R; Mattos, A L; Gomes, J M; Pereira, N L

1997-01-01

Postoperative analgesia and antiemetic efficacy after intrathecal neostigmine were investigated in a randomized, double-blind, placebo-controlled trial of 100 patients undergoing abdominal hysterectomy. The patients were assigned to one of five groups (n = 20), and received intravenous prior to the spinal block the antiemetic test drug (except propofol) and 0.05 mg/kg midazolam. The control group (group C), the neostigmine group (group N), and the propofol group (group P) received saline as the test drug. The droperidol group (group D) received 0.5 mg intravenous droperidol, and the metoclopramide group (group M) 10 mg intravenous metoclopramide. Group P was single-blinded and had an intravenous continuous propofol infusion (2-4 mg/kg/h) turned on 10 minutes after the spinal injection. The intrathecal drugs administered were 20 mg hyperbaric bupivacaine (0.5%) associated with either 100 microg neostigmine or saline (for group C). Nausea, emetic episodes, and the need for rescue medication were recorded for the first 24 hours postoperative and scored by the Visual Analog Scale (VAS). Time-to-first-rescue medication and rescue medications in 24 hours were similar among the groups (P = .2917 and P = .8780, respectively). Intrathecal 100 microg neostigmine was associated with a high incidence of nausea and vomiting perioperative, leading to a high consumption of antiemetics (P antiemetic test drugs were effective in preventing nausea and vomiting after 100 microg neostigmine. Intrathecal neostigmine (100 microg) was ineffective for postoperative analgesia after abdominal hysterectomy due to side effects of nausea and vomiting.

EFFECT OF EPIDURAL ANALGESIA ON LABOR AND ITS OUTCOMES.

Science.gov (United States)

Anwar, Sadia; Anwar, Muhannad Waseem; Ahmad, Sajjad

2015-01-01

Epidural analgesia is an effective and popular way to relieve labour pain but it may interfere with normal mechanism of labour. The objective of this study was to evaluate the outcome of labour in women with effective epidural analgesia in terms of duration of labour, mode of delivery and neonatal outcome. This was a quasi-experimental study conducted in the Department of Obstetrics and Gynaecology, Shaikh Zayed Federal Postgraduate Medical Institute and Hospital, Lahore. One hundred pregnant women were selected by non-probability convenient sampling method. Subjects were divided into two groups of. 50 each as per convenience. Patients of any gravidity at term from 37-41 weeks were included in the sample. Epidural analgesia was applied to group B and distilled water to group A at the lumber region and the progress of labour, mode of delivery and effects on Apgar scores of neonates were evaluated. Out of hundred patients, 77 had normal duration of second stage while 23 had prolonged second stage. Among them, 18 patients (36%) were in epidural group and 5 patients (10%) in non-epidural group, while 4 patients (8%) in epidural group developed intra-partum complications; whereas among non-epidural group had such complications. 65 patients had spontaneous vaginal delivery while 35 patients had instrumental delivery. Among them 29 patients (58%) were in epidural group while only 6 patients (12%) were in non-epidural group. Babies born had Apgar score 5/10 (21.8%), 6/10 (59.4%) and 7/10 (17.8%) at 1 minute and 8/10 (74.3%) and 9/10 (24.8%) at 5 minutes in both groups and none of them needed bag and mask resuscitation. Epidural analgesia does prolong the duration of second stage of labour and increases the instrumental delivery rate. Neonatal outcome is satisfactory while only a few intra-partum complications are found with epidural analgesia.

Effect of irradiation on analgesia induced by morphine and endorphin

International Nuclear Information System (INIS)

Kim, Jin Kyu; Lee, Byoung Hun; Hyun, Soung Hee; Chung, Ki Myung

2003-01-01

Morphine and endorphin administered intracerebroventricularly (i.c.v.) produce analgesia by activating different descending pain inhibitory systems. Gamma irradiation attenuates the acute analgesic action of i.c.v. injected morphine in mice. This study was done to investigate the effect of-irradiation on the analgesia produced by i.c.v. injected morphine and endorphin in male ICR mice. In one group, mice were exposed to whole-body irradiation at a dose of 5 Gy from a 60 Co source and the analgesic effects were tested 5, 30, 60, 90 and 180 min after irradiation using the acetic acid-induced writhing test. The analgesic effect was produced time-dependently and reached its maximum at 90 min after irradiation. Thus, time was fixed in the following studies. In another group, mice were irradiated with 5 Gy and tested 90 minutes later for analgesia produced by i.c.v. administration of morphine or endorphin. Irradiation significantly potentiated the analgesia produced by endorphin. However, the antinociception produced by morphine was not affected by irradiation. These results support the hypothesis that morphine and endorphin administered supraspinally produce antinocieception by different neuronal mechanisms

Effect of irradiation on analgesia induced by morphine and endorphin

Energy Technology Data Exchange (ETDEWEB)

Kim, Jin Kyu; Lee, Byoung Hun; Hyun, Soung Hee; Chung, Ki Myung [KAERI, Daejeon (Korea, Republic of)

2003-07-01

Morphine and endorphin administered intracerebroventricularly (i.c.v.) produce analgesia by activating different descending pain inhibitory systems. Gamma irradiation attenuates the acute analgesic action of i.c.v. injected morphine in mice. This study was done to investigate the effect of-irradiation on the analgesia produced by i.c.v. injected morphine and endorphin in male ICR mice. In one group, mice were exposed to whole-body irradiation at a dose of 5 Gy from a {sup 60}Co source and the analgesic effects were tested 5, 30, 60, 90 and 180 min after irradiation using the acetic acid-induced writhing test. The analgesic effect was produced time-dependently and reached its maximum at 90 min after irradiation. Thus, time was fixed in the following studies. In another group, mice were irradiated with 5 Gy and tested 90 minutes later for analgesia produced by i.c.v. administration of morphine or endorphin. Irradiation significantly potentiated the analgesia produced by endorphin. However, the antinociception produced by morphine was not affected by irradiation. These results support the hypothesis that morphine and endorphin administered supraspinally produce antinocieception by different neuronal mechanisms.

Gender-specific and gonadectomy-specific effects upon swim analgesia: role of steroid replacement therapy.

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Romero, M T; Cooper, M L; Komisaruk, B R; Bodnar, R J

1988-01-01

Both gender-specific and gonadectomy-specific effects have been observed for the analgesic responses following continuous and intermittent cold-water swims (CCWS and ICWS respectively): female rats display significantly less analgesia than males, and gonadectomized rats display significantly less analgesia than sham-operated controls. The present study evaluated the effects of steroid replacement therapy with testosterone propionate (TP: 2 mg/kg, SC) upon CCWS and ICWS analgesia on the tail-flick and jump tests and hypothermia in sham-operated or gonadectomized male and female rats. Thirty days following surgery, rats received either no treatment, a sesame oil vehicle or TP for 14 days prior to, and then during testing. Relative to the no treatment condition, repeated vehicle injections in sham-operated rats eliminated the gender-specific, but did not affect the gonadectomy-specific effects upon CCWS and ICWS analgesia. TP reversed the deficits in CCWS and ICWS analgesia observed in both castrated and ovariectomized rats on both pain tests. TP only potentiated CCWS analgesia in sham-operated males on the tail-flick test. TP potentiated CCWS and ICWS hypothermia in gonadectomized rats and in male sham-operated rats. These data indicate that gonadal steroids play a major modulatory role in the etiology of swim analgesia, and that the observed gender effects are sensitive to possible adaptational variables.

Involvement of α2-adrenoceptors in inhibitory and facilitatory pain modulation processes.

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Vo, L; Drummond, P D

2016-03-01

In healthy humans, high-frequency electrical stimulation (HFS) of the forearm not only produces hyperalgesia at the site of stimulation but also reduces sensitivity to pressure-pain on the ipsilateral side of the forehead. In addition, HFS augments the ipsilateral trigeminal nociceptive blink reflex and intensifies the ipsilateral component of conditioned pain modulation. The aim of this study was to determine whether α2-adrenoceptors mediate these ipsilateral nociceptive influences. The α2-adrenoceptor antagonist yohimbine was administered to 22 participants in a double-blind, placebo-controlled crossover study. In each session, thermal and mechanical sensitivity in the forearms and forehead was assessed before and after HFS. In addition, the combined effect of HFS and yohimbine on the nociceptive blink reflex and on conditioned pain modulation was explored. In this paradigm, the conditioning stimulus was cold pain in the ipsilateral or contralateral temple, and the test stimulus was electrically evoked pain in the forearm. Blood pressure and electrodermal activity increased for several hours after yohimbine administration, consistent with blockade of central α2-adrenoceptors. Yohimbine not only augmented the nociceptive blink reflex ipsilateral to HFS but also intensified the inhibitory influence of ipsilateral temple cooling on electrically evoked pain at the HFS-treated site in the forearm. Yohimbine had no consistent effect on primary or secondary hyperalgesia in the forearm or on pressure-pain in the ipsilateral forehead. These findings imply involvement of α2-adrenoceptors both in ipsilateral antinociceptive and pronociceptive pain modulation processes. However, a mechanism not involving α2-adrenoceptors appears to mediate analgesia in the ipsilateral forehead after HFS. © 2015 European Pain Federation - EFIC®

Dexamethasone prolongs local analgesia after subcutaneous infiltration of bupivacaine microcapsules in human volunteers

DEFF Research Database (Denmark)

Holte, Kathrine; Werner, Mads U; Lacouture, Peter G

2002-01-01

BACKGROUND: The addition of small amounts of dexamethasone to extended-release formulations of bupivacaine in microcapsules has been found to prolong local analgesia in experimental studies, but no clinical data are available. METHODS: In a double-blinded study, 12 healthy male volunteers were...... randomized to receive simultaneous subcutaneous injections of bupivacaine microcapsules with dexamethasone and bupivacaine microcapsules without dexamethasone in each calf. Local analgesia was assessed with a validated human pain model; main parameters evaluated were thermal, mechanical, and pain detection...... curve [AUC]) were considered best estimate of analgesia. Safety evaluations were performed daily for the first week and at 2 weeks, 6 weeks, and 6 months after injection. RESULTS: The addition of dexamethasone significantly prolonged local analgesia of bupivacaine microcapsules without influence...

Reported provision of analgesia to patients with acute abdominal pain in Canadian paediatric emergency departments.

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Poonai, Naveen; Cowie, Allyson; Davidson, Chloe; Benidir, Andréanne; Thompson, Graham C; Boisclair, Philippe; Harman, Stuart; Miller, Michael; Butter, Andreana; Lim, Rod; Ali, Samina

2016-09-01

Evidence exists that analgesics are underutilized, delayed, and insufficiently dosed for emergency department (ED) patients with acute abdominal pain. For physicians practicing in a Canadian paediatric ED setting, we (1) explored theoretical practice variation in the provision of analgesia to children with acute abdominal pain; (2) identified reasons for withholding analgesia; and (3) evaluated the relationship between providing analgesia and surgical consultation. Physician members of Paediatric Emergency Research Canada (PERC) were prospectively surveyed and presented with three scenarios of undifferentiated acute abdominal pain to assess management. A modified Dillman's Tailored Design method was used to distribute the survey from June to July 2014. Overall response rate was 74.5% (149/200); 51.7% of respondents were female and mean age was 44 (SD 8.4) years. The reported rates of providing analgesia for case scenarios representative of renal colic, appendicitis, and intussusception, were 100%, 92.1%, and 83.4%, respectively, while rates of providing intravenous opioids were 85.2%, 58.6%, and 12.4%, respectively. In all 60 responses where the respondent indicated they would obtain a surgical consultation, analgesia would be provided. In the 35 responses where analgesia would be withheld, 21 (60%) believed pain was not severe enough, while 5 (14.3%) indicated it would obscure a surgical condition. Pediatric emergency physicians self-reported rates of providing analgesia for acute abdominal pain scenarios were higher than previously reported, and appeared unrelated to request for surgical consultation. However, an unwillingness to provide opioid analgesia, belief that analgesia can obscure a surgical condition, and failure to take self-reported pain at face value remain, suggesting that the need exists for further knowledge translation efforts.

Stereotactic core biopsy of an impalpable screen-detected breast lesion using acupuncture-analgesia

OpenAIRE

English, R E; Chen, J H

2010-01-01

Chinese acupuncture-analgesia is used for pain management during various surgical procedures. Over the past 40 years this approach has been introduced in many countries and has been particularly helpful in the investigation and treatment of patients who are unable to tolerate conventional analgesia. We report here the case of a woman with a 17-year history of myalgic encephalitis who underwent a stereotactic core biopsy of the breast under acupuncture-analgesia. A planning session was needed ...

Analgesia for patients undergoing shockwave lithotripsy for urinary stones – a systematic review and meta-analysis

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Omar M. Aboumarzouk

Full Text Available ABSTRACT Background Shock wave lithotripsy (SWL is the first line treatment modality for a significant proportion of patients with upper urinary tracts stones. Simple analgesics, opioids and non-steroidal anti-inflammatory drugs (NSAIDs are all suitable agents but the relative efficacy and tolerability of these agents is uncertain. Objectives To determine the efficacy of the different types of analgesics used for the control of pain during SWL for urinary stones. Materials and Methods We searched the Cochrane Renal Group’s Specialised Register, MEDLINE, EMBASE and also hand-searched reference lists of relevant articles (Figure-1. Randomised controlled trials (RCT’s comparing the use of any opioid, simple analgesic or NSAID during SWL were included. These were compared with themselves, each-other or placebo. We included any route or form of administration (bolus, PCA. We excluded agents that were used for their sedative qualities. Data were extracted and assessed for quality independently by three reviewers. Meta-analyses have been performed where possible. When not possible, descriptive analyses of variables were performed. Dichotomous outcomes are reported as relative risk (RR and measurements on continuous scales are reported as weighted mean differences (WMD with 95% confidence intervals. Results Overall, we included 9 RCTs (539 participants from 6 countries. Trial agents included 7 types of NSAIDs, 1 simple analgesic and 4 types of opioids. There were no significant differences in clinical efficacy or tolerability between a simple analgesic (paracetamol and an NSAID (lornoxicam. When comparing the same simple analgesic with an opioid (tramadol, both agents provided safe and effective analgesia for the purpose of SWL with no significant differences. There were no significant differences in pain scores between NSAIDs or opioids in three studies. Adequate analgesia could be achieved more often for opioids than for NSAIDs (RR 0.358; 95% CI

Labor induction just after external cephalic version with epidural analgesia at term.

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Cuerva, Marcos J; Piñel, Carlos S; Caceres, Javier; Espinosa, Jose A

2017-06-01

To analyze the benefits of external cephalic version (ECV) with epidural analgesia at term and labor induction just after the procedure. This is a retrospective observational study with patients who did not want trying a breech vaginal delivery and decided trying an ECV with epidural analgesia at term and wanted labor induction or cesarean section after the procedure. We present the results of 40 ECV with epidural analgesia at term and labor induction or cesarean section just after the ECV. ECV succeeded in 26 out of 40 (65%) patients. Among the 26 successful ECV, 6 delivered by cesarean (23.1%). 20 patients delivered vaginally (76.9%; 50% of all patients). Considering that a high number of cesarean deliveries can be avoided, induction of labor after ECV with epidural analgesia at term can be considered after being discussed in selected patient. Copyright © 2017. Published by Elsevier B.V.

Cutaneous synergistic analgesia of bupivacaine in combination with dopamine in rats.

Science.gov (United States)

Tzeng, Jann-Inn; Wang, Jieh-Neng; Wang, Jhi-Joung; Chen, Yu-Wen; Hung, Ching-Hsia

2016-05-04

The main goal of the study was to investigate the interaction between bupivacaine and dopamine on local analgesia. After the blockade of the cutaneous trunci muscle reflex (CTMR) responses, which occurred following the drugs were subcutaneously injected in rats, the cutaneous analgesic effect of dopamine in a dosage-dependent fashion was compared to that of bupivacaine. Drug-drug interactions were evaluated by isobolographic methods. We showed the dose-dependent effects of dopamine on infiltrative cutaneous analgesia. On the 50% effective dose (ED50) basis, the rank of drug potency was bupivacaine (1.99 [1.92-2.09] μmol/kg) greater than dopamine (190 [181-203] μmol/kg) (Pbupivacaine. The addition of dopamine to the bupivacaine solution exhibited a synergistic effect. Our pre-clinical data showed that dopamine produced a dose-dependent effect in producing cutaneous analgesia. When compared with bupivacaine, dopamine produced a lesser potency with a similar duration of cutaneous analgesia. Dopamine added to the bupivacaine preparation resulted in a synergistic analgesic effect. Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.

Epidural analgesia in labour and neonatal respiratory distress: a case-control study.

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Kumar, Manoj; Chandra, Sue; Ijaz, Zainab; Senthilselvan, Ambikaipakan

2014-03-01

Epidural analgesia is the commonest mode for providing pain relief in labour, with a combination of bupivacaine and fentanyl most often used in practice. To test whether late-preterm and term neonates exposed to opioids in epidural analgesia in labour are more likely to develop respiratory distress in the immediate neonatal period. A case-control study was conducted of singleton infants born during January 2006 to December 2010. Cases were neonates ≥34 weeks gestation, who developed respiratory distress within 24 h of life requiring supplemental oxygen ≥2 h and/or positive pressure ventilation in the neonatal intensive care unit. Controls were gestation and site-matched neonates who did not develop any respiratory distress within the same period. The information on exposure to epidural analgesia and on potential confounding variables was obtained from the standardised delivery record, routinely filled out on all women admitted to the labour wards. In our study, 206 cases and 206 matched controls were enrolled. Exposure to epidural analgesia was present in 146 (70.9%) cases as compared with 131 (63.6%) of the controls. The association between exposure to epidural analgesia and respiratory distress in neonates was statistically significant upon adjustment for all potential confounders (adjusted OR: 1.75, 95% CI 1.03 to 2.99; p = 0.04). When data was separately analysed for term and late-preterm infants, the results were consistent across these subpopulations, showing no interaction effect. Late-preterm and term infants exposed to maternal epidural analgesia in labour are more likely to develop respiratory distress in the immediate neonatal period.

Patient Controlled Epidural Analgesia during Labour: Effect of Addition of Background Infusion on Quality of Analgesia & Maternal Satisfaction

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Uma Srivastava

2009-01-01

Full Text Available Patient controlled epidural analgesia (PCEA is a well established technique for pain relief during labor. But the inclusion of continuous background infusion to PCEA is controversial. The aim of this study was to assess whether the use of continuous infusion along with PCEA was beneficial for laboring women with regards to quality of analgesia, maternal satisfaction and neonatal outcome in comparison to PCEA alone. Fifty five parturients received epidural bolus of 10ml solution containing 0.125% bupivacaine +2 ìg.ml-1 of fentanyl. For maintenance of analgesia the patients of Group PCEA self administered 8 ml bolus with lockout interval of 20 minutes of above solution on demand with no basal infusion. While the patients of Group PCEA + CI received continuous epidural infusion at the rate of 10 ml.hr-1 along with self administered boluses of 3 ml with lockout interval of 10 minutes of similar epidural solution. Patients of both groups were given rescue boluses by the anaesthetists for distressing pain. Verbal analogue pain scores, incidence of distressing pain, need of supplementary/rescue boluses, dose of bupivacaine consumed, maternal satisfaction and neonatal Apgar scores were recorded. No significant difference was observed between mean VAS pain scores during labor, maternal satisfaction, mode of delivery or neonatal Apgar scores. But more patients (n=8 required rescue boluses in PCEA group for distressing pain. The total volume consumed of bupivacaine and opioid was slightly more in PCEA + CI group. In both the techniques the highest sensory level, degree of motor block were comparable& prolongation of labor was not seen. It was concluded that both the techniques provided equivalent labor analgesia, maternal satisfaction and neonatal Apgar scores. PCEA along with continuous infusion at the rate of 10 ml/ hr resulted in lesser incidence of distressing pain and need for rescue analgesic. Although this group consumed higher dose of bupivacaine

NPYFa, A Chimeric Peptide of Met-Enkephalin, and NPFF Induces Tolerance-Free Analgesia.

Science.gov (United States)

Mudgal, Annu; Kumar, Krishan; Mollereau, Catherine; Pasha, Santosh

2016-06-01

Methionine-enkephalin-Arg-Phe is an endogenous amphiactive analgesic peptide. Neuropeptide FF, on the other hand, is reported for its role in opioid modulation and tolerance development. Based on these reports, in the present study we designed a chimeric peptide NPYFa (YGGFMKKKPQRFamide), having the Met-enkephalin (opioid) and PQRFamide sequence of neuropeptide FF, which can then target both the opioid and neuropeptide FF receptors. We hypothesized that the chimeric peptide so designed would have both analgesic properties and further aid in understanding of the role of neuropeptide FF in the development of opiate tolerance. Our studies indicated that NPYFa induced an early onset, potent, dose-dependent and prolonged antinociception. Additionally, antagonists (MOR, KOR, and DOR) pretreatment studies determined a KOR-mediated antinociception activity of the ligand. Further, in vitro binding studies using the Eu-GTP-γS binding assay on cell lines expressing opioid and NPFF receptors showed binding to both the opioid and neuropeptide FF receptors suggesting a multiple receptor binding character of NPYFa. Moreover, chronic (6 days) treatment with NPYFa exhibited an absence of tolerance development subsequent to its analgesia. The current study proposes NPYFa as a potent, long-acting antinociceptor lacking tolerance development as well as a probe to study opioid analgesia and the associated complex mechanisms of tolerance development. © 2016 John Wiley & Sons A/S.

Patient-Controlled Oral Analgesia for Postoperative Pain Management Following Total Knee Replacement

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Patti Kastanias

2010-01-01

Full Text Available PURPOSE: To investigate whether patient-controlled oral analgesia (PCOA used by individuals receiving a total knee replacement could reduce pain, increase patient satisfaction, reduce opioid use and/or reduce opioid side effects when compared with traditional nurse (RN-administered oral analgesia.

Neuraxial analgesia effects on labor progression: facts, fallacies, uncertainties, and the future

Science.gov (United States)

Grant, Erica N.; Tao, Weike; Craig, Margaret; McIntire, Donald; Leveno, Kenneth

2014-01-01

Approximately 60% of women who labor receive some form of neuraxial analgesia, but concerns have been raised regarding whether it negatively impacts the labor and delivery process. In this review, we attempt to clarify what has been established as truths, falsities, and uncertainties regarding the effects of this form of pain relief on labor progression, negative and/or positive. Additionally, although the term “epidural” has become synonymous with neuraxial analgesia, we discuss two other techniques, combined spinal-epidural and continuous spinal analgesia, that are gaining popularity, as well as their effects on labor progression. PMID:25088476

Modulation of formalin-induced Fos-like immunoreactivity in the spinal cord by swim stress-induced analgesia, morphine and ketamine

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Asma Hayati, Ahmad

2008-06-01

Full Text Available Induction of c-fos in the spinal cord due to pain is well established. This study aims to look at the effects of acute swim stress on Fos-like immunoreactivity (FLI induced by formalin and how it is modulated by ketamine and morphine. Acutely-stressed and non-stressed adult male Sprague Dawley rats were pretreated with intraperitoneal injection of ketamine 5 mg/kg (Ketava, Atlantic Lab, morphine 10 mg/kg (Rhotard, Custom Pharmaceutical, or saline, 5 minutes prior to experimentation. Rats were acutely stressed by swimming for 3 min in 20°C water. Dilute formalin (Formaldehyde, Merck was injected to the hindpaw and the formalin score recorded. Rats were then sacrificed and spinal cords (L4-L5 removed for immunohistochemical analysis of FLI. Two-way ANOVA showed significant effects of stress, drug and stress-drug interactions in formalin test and FLI. Both morphine and ketamine produced analgesia in the formalin test. In the saline stressed group, FLI was suppressed on the ipsilateral side (p<0.01 but increased on the contralateral side (p<0.01 compared with non-stressed saline. In morphine and ketamine stressed groups, FLI was increased on both ipsilateral and contralateral sides for morphine (ipsilateral: p<0.05; contralateral: p<0.001 and ketamine (ipsilateral: p<0.05, contralateral: p<0.05 compared with their corresponding non-stressed groups. In conclusion, presence of stress may lead to discrepancy between behavioural manifestation of pain and c-fos induction in the spinal cord.

Neuraxial block and postoperative epidural analgesia

DEFF Research Database (Denmark)

Leslie, K; McIlroy, D; Kasza, J

2016-01-01

BACKGROUND: We assessed associations between intraoperative neuraxial block and postoperative epidural analgesia, and a composite primary outcome of death or non-fatal myocardial infarction, at 30 days post-randomization in POISE-2 Trial subjects. METHODS: 10 010 high-risk noncardiac surgical pat...

Considerações sobre analgesia controlada pelo paciente em hospital universitário Consideraciones sobre analgesia controlada por el paciente en hospital universitario Patient controlled analgesia in a university hospital

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Guilherme Antônio Moreira de Barros

2003-02-01

Full Text Available JUSTIFICATIVA E OBJETIVOS: O rápido progresso obtido nas técnicas cirúrgicas e anestésicas nos últimos anos proporcionou extraordinário aumento das indicações de procedimentos invasivos. Por outro lado, com o envelhecimento da população, o período de recuperação pós-operatória passou a ser motivo de maior preocupação da equipe de saúde. Para tanto, novas técnicas de analgesia foram criadas e desenvolvidas e, dentre elas, destaca-se a Analgesia Controlada pelo Paciente (ACP. Em nosso país, o Serviço de Dor Aguda (SEDA da Disciplina de Terapia Antálgica e Cuidados Paliativos, do Departamento de Anestesiologia da Faculdade de Medicina de Botucatu - UNESP, utiliza há muitos anos esta técnica de analgesia. Com a finalidade de atestar a qualidade do serviço prestado, a pesquisa objetiva verificar a eficácia e segurança do método, assim como identificar e caracterizar a população atendida. MÉTODO: De modo retrospectivo, foram avaliados 679 pacientes tratados pelo SEDA, exclusivamente com o método de ACP, durante três anos. Os pacientes foram incluídos na análise aleatoriamente, sem restrições quanto à idade, ao sexo, ao tipo de cirurgia e considerando-se unicamente a possibilidade de indicação da ACP. Foram estudados os seguintes atributos: sexo, idade, tipo de cirurgia, intensidade da dor, dias de acompanhamento, analgésicos utilizados, vias de administração, ocorrência de efeitos colaterais e complicações da técnica. RESULTADOS: 3,96% dos pacientes submetidos a cirurgias e 1,64% dos internados no período observado foram acompanhados com técnica ACP. A cirurgia torácica foi a mais freqüentemente atendida, com 25% dos pacientes. A morfina foi o medicamento mais utilizado (54,2%, sendo a via peridural a preferencial (49,5%. A escala numérica verbal média foi de 0,8 (0-10. Os efeitos colaterais ocorreram em 22,4% dos doentes tratados. CONCLUSÕES: Os resultados foram considerados excelentes quanto �

Acupuntura e analgesia: aplicações clínicas e principais acupontos Acupuncture and analgesia: clinical applications and main acupoints

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Marilda Onghero Taffarel

2009-12-01

Full Text Available A dor é uma resposta protetora do organismo a estímulos nocivos, que resulta em efeitos indesejáveis quando não controlada. A analgesia pode ser promovida mediante a utilização de vários tipos de fármacos. No entanto, estes podem causar efeitos adversos de acordo com a espécie e condição física do paciente. A acupuntura tem se mostrado eficaz como coanalgésico pela capacidade de diminuir a quantidade de fármacos utilizados para o controle da dor e raramente ser contraindicada. Objetivou-se com este trabalho fazer uma breve revisão sobre as aplicações clínicas e os efeitos fisiológicos da acupuntura nos mecanismos da dor, bem como demonstrar os principais pontos de acupuntura utilizados para analgesia em animais. A pesquisa foi realizada em bases de dados eletrônicas por palavra-chave, durante o período de março a dezembro de 2008.Pain is a protective response of the body to harmful stimulus, which results in undesirable effects if not controlled. Analgesia can be achieved with the use of different types of drugs. However, these drugs can cause adverse effects according to species and patient physical condition. Acupuncture has been proved to be an effective analgesic adjuvant, by the capacity to decrease the amount of drug used for pain control, rarely contra-indicated. The aim of this paper was to review the physiological effects of acupuncture on pain mechanisms, and demonstrate the main acupoints used for animal analgesia. The search was done in electronic search database using key words, in 2008.

Remifentanil for labour analgesia: a double-blinded, randomised controlled trial of maternal and neonatal effects of patient-controlled analgesia versus continuous infusion.

Science.gov (United States)

Shen, M K; Wu, Z F; Zhu, A B; He, L L; Shen, X F; Yang, J J; Feng, S W

2013-03-01

This trial aimed to compare the maternal and neonatal effects of remifentanil given by patient-controlled analgesia (PCA) or continuous infusion for labour analgesia. Patient controlled analgesia was administered using increasing stepwise boluses from 0.1 to 0.4 μg.kg(-1) (0.1 μg.kg(-1) increment, 2 min lockout, n = 30). Continuous infusion used rates from 0.05 to 0.2 μg.kg(-1) .min(-1) (0.05 μg.kg(-1) .min(-1) increment, n = 30). Dose increments were given on request. Women reported lowest pain scores (median (IQR [range]) of 3 (2-4 [2-5]) for PCA and 4 (3-5.25 [3-7]) for continuous infusion (p = 0.004) at 60 min after the beginning of analgesia. The mean (SD) remifentanil umbilical vein/maternal artery ratio in the PCA and infusion groups were 0.74 (0.45) vs 0.70 (0.52), respectively (p = 0.776). The mean (SD) umbilical artery/umbilical vein ratios were 0.31 (0.12) vs 0.26 (0.07), respectively (p = 0.088). Maternal and neonatal adverse reactions of remifentanil were similar between the two groups. The total remifentanil consumption (median (IQR [range]) during PCA administration was lower than continuous infusion, 1.34 (1.22-1.48 [0.89-1.69]) mg vs 1.49 (1.35-1.61 [1.12-1.70] mg; p = 0.011). The results suggest that remifentanil PCA provides better pain relief and similar placental transfer compared with continuous infusion. Anaesthesia © 2013 The Association of Anaesthetists of Great Britain and Ireland.

Effect of epidural analgesia on labor and its outcomes

International Nuclear Information System (INIS)

Fawad, A.; Naz, H.; Nelofar, T.; Abbasi, A.U.N.

2015-01-01

Epidural analgesia is an effective and popular way to relieve labour pain but it may interfere with normal mechanism of labour. The objective of this study was to evaluate the outcome of labour in women with effective epidural analgesia in terms of duration of labour, mode of delivery and neonatal outcome. Methods: This was a quasi-experimental study conducted in the Department of Obstetrics and Gynaecology, Shaikh Zayed Federal Postgraduate Medical Institute and Hospital, Lahore. One hundred pregnant women were selected by non-probability convenient sampling method. Subjects were divided into two groups of 50 each as per convenience. Patients of any gravidity at term from 37-41 weeks were included in the sample. Epidural analgesia was applied to group B and distilled water to group A at the lumber region and the progress of labour, mode of delivery and effects on Apgar scores of neonates were evaluated. Out of hundred patients, 77 had normal duration of second stage while 23 had prolonged second stage. Among them, 18 patients (36%) were in epidural group and 5 patients (10%) in non-epidural group, while 4 patients (8%) in epidural group developed intra-partum complications; whereas among non-epidural group had such complications. 65 patients had spontaneous vaginal delivery while 35 patients had instrumental delivery. Among them 29 patients (58%) were in epidural group while only 6 patients (12%) were in non-epidural group. Babies born had Apgar score 5/10 (21.8%), 6/10 (59.4%) and 7/10 (17.8%) at 1 minute and 8/10 (74.3%) and 9/10 (24.8%) at 5 minutes in both groups and none of them needed bag and mask resuscitation. Conclusion: Epidural analgesia does prolong the duration of second stage of labour and increases the instrumental delivery rate. Neonatal outcome is satisfactory while only a few intra-partum complications are found with epidural analgesia. (author)

Hypnosis, hypnotizability, and placebo.

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Frischholz, Edward J

2015-01-01

Dr. Raz's speculations about the relation between placebo responsivity and hypnotizability are critically examined. While there is no generally accepted theoretical definition of hypnosis, there is a general consensus that hypnotizability can be reliably measured. In contrast, there seems to be a general consensus about a theoretical definition of placebo (including placebo effect, placebo response, and nocebo). There is no widely accepted measure of individual differences in placebo responsivity. Various methodological considerations about how to examine the relation between placebo responsivity and hypnotizability are identified. Studies are identified which indicate that response to treatments which utilize adjunctive hypnosis are superior to placebo treatments. The only study which examined whether placebo responsivity was correlated with hypnotizability seems to indicate that they are only slightly related at best. The possibility that there may be such thing as a "good placebo responder (GPR)" is questioned, while the known clinical value of hypnotizability assessment is reaffirmed. Future directions for empirical research on the relation between placebo responsivity and hypnotizability are identified.

Hypnosis, hynotizability, and placebo.

Science.gov (United States)

Frischholz, Edward J

2007-07-01

Dr. Raz' speculations about the relation between placebo responsivity and hypnotizability are critically examined. While there is no generally accepted theoretical definition of hypnosis, there is a general consensus that hypnotizability can be reliably measured. In contrast, there seems to be a general consensus about a theoretical definition of placebo (including placebo effect, placebo response and nocebo). There is no widely accepted measure of individual differences in placebo responsivity. Various methodological considerations about how to examine the relation between placebo responsivity and hypnotizability are identified. Studies are identified which indicate that response to treatments which utilize adjunctive hypnosis are superior to placebo treatments. The only study which examined whether placebo responsivity was correlated with hypnotizability seems to indicate that they are only slightly related at best. The possibility that there may be such thing as a "good placebo responder (GPR)" is questioned, while the known clinical value of hypnotizability assessment is reaffirmed. Future directions for empirical research on the relation between placebo responsivity and hypnotizability are identified.

Associação entre a analgesia epidural e o trauma perineal no parto vaginal Asociación entre la analgesia epidural y el trauma perineal en el parto vaginal Association between epidural analgesia and perineal laceration in vaginal delivery

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Juliana Cristina dos Santos Monteiro

2009-03-01

Full Text Available O objetivo deste estudo foi analisar a associação entre a analgesia epidural e a laceração perineal em mulheres submetidas ao parto vaginal. Foi realizado um estudo descritivo e transversal, para o qual foram pesquisados 109 prontuários de mulheres assistidas durante o processo de parturição, em uma maternidade em Ribeirão Preto. Os dados foram coletados nos meses de março e abril de 2003. Para analisar a correlação entre as variáveis foi aplicado o teste qui-quadrado. Foi realizado parto normal em 91,7% (100 das parturientes e fórceps em 8,2% (9. Na análise dos dados, 74,3% da amostra receberam analgesia epidural; destas, 26,5% tiveram algum grau de laceração perineal e 9,1%, períneo íntegro, não sendo possível verificar a associação entre as variáveis mencionadas. Não foi verificada, neste estudo, significância estatística para afirmar que as condições do períneo após o parto vaginal e a utilização da analgesia epidural estão associadas (valor x²4GL= 3,1.El objetivo de esto estudio fue analizar la asociación entre la analgesia epidural y la laceración perineal en mujeres sometidas al parto vaginal. Fue realizado un estudio descriptivo y transversal, para lo cual fueron investigados 109 prontuarios de mujeres asistidas durante el proceso de parturición en una maternidad en Ribeirão Preto. Los datos fueron colectados en marzo y abril de 2003. Para analizar la correlación entre las variables fue aplicado el Teste Chi-Cuadrado. Fue realizado parto normal en 91,7% (100 de las parturientes y en 8,2% (09 parto fórceps. En el análisis de los datos, 74,3% de la muestra recibieron analgesia epidural, y de estas 26,5% tuvieron algún nivel de laceración perineal y 9,1% perineo íntegro. No fue posible verificar la asociación entre las variables aludidas. No fue verificado en esto estudio, significancia estadística para afirmar que las condiciones del perineo después del parto vaginal y el uso de analgesia

Nerve injury caused by mandibular block analgesia

DEFF Research Database (Denmark)

Hillerup, S; Jensen, Rigmor H

2006-01-01

Fifty-four injection injuries in 52 patients were caused by mandibular block analgesia affecting the lingual nerve (n=42) and/or the inferior alveolar nerve (n=12). All patients were examined with a standardized test of neurosensory functions. The perception of the following stimuli was assessed......: feather light touch, pinprick, sharp/dull discrimination, warm, cold, point location, brush stroke direction, 2-point discrimination and pain perception. Gustation was tested for recognition of sweet, salt, sour and bitter. Mandibular block analgesia causes lingual nerve injury more frequently than...... inferior alveolar nerve injury. All grades of loss of neurosensory and gustatory functions were found, and a range of persisting neurogenic malfunctions was reported. Subjective complaints and neurosensory function tests indicate that lingual nerve lesions are more incapacitating than inferior alveolar...

Perioperative epidural analgesia reduces cancer recurrence after gastro-oesophageal surgery.

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Hiller, J G; Hacking, M B; Link, E K; Wessels, K L; Riedel, B J

2014-03-01

Recent interest has focused on the role of perioperative epidural analgesia in improving cancer outcomes. The heterogeneity of studies (tumour type, stage and outcome endpoints) has produced inconsistent results. Clinical practice also highlights the variability in epidural effectiveness. We considered the novel hypothesis that effective epidural analgesia improves cancer outcomes following gastro-oesophageal cancer surgery in patients with grouped pathological staging. Following institutional approval, a database analysis identified 140 patients, with 2-year minimum follow-up after gastro-oesophageal cancer surgery. All patients were operated on by a single surgeon (2005-2010). Information pertaining to cancer and survival outcomes was extracted. Univariate analysis demonstrated a 1-year 14% vs. 33% (P = 0.01) and 2-year 27% vs. 40% [hazard ratio (HR)=0.59; 95% CI, 0.32-1.09, P = 0.087] incidence of cancer recurrence in patients with (vs. without) effective (> 36 h duration) epidural analgesia, respectively. Multivariate analysis demonstrated increased time to cancer recurrence (HR = 0.33; 95% CI: 0.17-0.63, P benefit (HR = 0.42; 95% CI: 0.21-0.83, P benefit in patients with oesophageal cancer (HR = 0.34; 95% CI: 0.16-0.75, P = 0.005) and in patients with tumour lymphovascular space infiltration (LVSI), (HR = 0.49; 95% CI: 0.26-0.94, P = 0.03). Effective epidural analgesia improved estimated median time to death (2.9 vs. 1.8 years, P = 0.029) in patients with tumour LVSI. This study found an association between effective post-operative epidural analgesia and medium-term benefit on cancer recurrence and survival following oesophageal surgery. A prospective study that controls for disease type, stage and epidural effectiveness is warranted. © 2014 The Acta Anaesthesiologica Scandinavica Foundation. Published by John Wiley & Sons Ltd.

Combined spinal-epidural analgesia in labour: its effects on delivery outcome

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Suneet Kaur Sra Charanjit Singh

2016-06-01

Full Text Available ABSTRACT BACKGROUND AND OBJECTIVES: Combined spinal-epidural (CSE has become an increasingly popular alternative to traditional labour epidural due to its rapid onset and reliable analgesia provided. This was a prospective, convenient sampling study to determine the effects of CSE analgesia on labour outcome. METHODS: One hundred and ten healthy primigravida parturients with a singleton pregnancy of ≥37 weeks gestation and in the active phase of labour were studied. They were enrolled to the CSE (n = 55 or Non-CSE (n = 55 group based on whether they consented to CSE analgesia. Non-CSE parturients were offered other methods of labour analgesia. The duration of the first and second stage of labour, rate of instrumental vaginal delivery and emergency cesarean section, and Apgar scores were compared. RESULTS: The mean duration of the first and second stage of labour was not significantly different between both groups. Instrumental delivery rates between the groups were not significantly different (CSE group, 11% versus Non-CSE group, 16%. The slightly higher incidence of cesarean section in the CSE group (16% versus 15% in the Non-CSE group was not statistically significant. Neonatal outcome in terms of Apgar score of less than 7 at 1 and 5 min was similar in both groups. CONCLUSION: There were no significant differences in the duration of labour, rate of instrumental vaginal delivery and emergency cesarean section, and neonatal outcome in parturients who received compared to those who did not receive CSE for labour analgesia.

Placebo neural systems: nitric oxide, morphine and the dopamine brain reward and motivation circuitries.

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Fricchione, Gregory; Stefano, George B

2005-05-01

Evidence suggests that the placebo response is related to the tonic effects of constitutive nitric oxide in neural, vascular and immune tissues. Constitutive nitric oxide levels play a role in the modulation of dopamine outflow in the nigrostriatal movement and the mesolimbic and mesocortical reward and motivation circuitries. Endogenous morphine, which stimulates constitutive nitric oxide, may be an important signal molecule working at mu receptors on gamma aminobutyric acid B interneurons to disinhibit nigral and tegmental dopamine output. We surmise that placebo induced belief will activate the prefrontal cortex with downstream stimulatory effects on these dopamine systems as well as on periaqueductal grey opioid output neurons. Placebo responses in Parkinson's disease, depression and pain disorder may result. In addition, mesolimbic/mesocortical control of the stress response systems may provide a way for the placebo response to benefit other medical conditions.

Regional analgesia for video-assisted thoracic surgery – a systematic review

DEFF Research Database (Denmark)

Julia Steinthorsdottir, Kristin; Wildgaard, Lorna; Jessen Hansen, Henrik

2013-01-01

there is no gold standard for regional analgesia for VATS. This systematic review aimed to assess different regional techniques in regards to effect on acute post-operative pain following VATS, with emphasis on VATS lobectomy. The systematic review of the PubMed, Cochrane Library and Embase databases yielded...... be demonstrated, but a guide of factors to include in future studies on regional analgesia for VATS is presented....

Lumbosacral epidural magnesium prolongs ketamine analgesia in conscious sheep Sulfato de magnésio prolonga a analgesia epidural lombosacral induzida pela quetamina em carneiros

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Rafael DeRossi

2012-02-01

Full Text Available PURPOSE: To determine the analgesic, motor, sedation and systemic effects of lumbosacral epidural magnesium sulphate added to ketamine in the sheep. METHODS: Six healthy adult male mixed-breed sheep; weighing 43 ± 5 kg and aged 20-36 months. Each sheep underwent three treatments, at least 2 weeks apart, via epidural injection: (1 ketamine (KE; 2.5 mg/kg, (2 magnesium sulphate (MG; 100 mg, and (3 KE + MG (KEMG; 2.5 mg/kg + 100 mg, respectively. Epidural injections were administered through the lumbosacral space. Analgesia, motor block, sedation, cardiovascular effects, respiratory rate, skin temperature, and rectal temperature were evaluated before (baseline and after drug administration as needed. RESULTS: The duration of analgesia with the lumbosacral epidural KEMG combination was 115 ± 17 min (mean ± SD, that is, more than twice that obtained with KE (41 ± 7 min or MG (29 ± 5 min alone. KE and KEMG used in this experiment induced severe ataxia. The heart rate and arterial blood pressures changes were no statistical difference in these clinically health sheep. CONCLUSION: The dose of magnesium sulphate to lumbosacral epidural ketamine in sheep is feasible, and can be used in procedures analgesics in sheep.OBJETIVO: Determinar os efeitos analgésicos, motores, sedativos e sistêmicos da adição de sulfato de magnésio na analgesia epidural com quetamina em carneiros. MÉTODOS: Foram utilizados seis carneiros machos sadios, pesando 43 ± 5 kg, com idade entre 20 a 36 meses. Cada animal recebeu três tratamentos, com duas semanas entre experimentos via administração epidural: (1 quetamina (KE; 2,5 mg/kg, (2 sulfato de magnésio (MG; 100 mg e (3 KE + MG (KEMG; 2,5 mg/kg + 100 mg, respectivamente. As administrações epidurais foram administradas no espaço lombosacral. Analgesia, bloqueio motor, sedação, efeitos cardiovasculares, freqüência respiratória, temperatura retal e de pele foram avaliados antes (basal e depois da administra

Does different information disclosure on placebo control affect blinding and trial outcomes? A case study of participant information leaflets of randomized placebo-controlled trials of acupuncture

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Soyeon Cheon

2018-01-01

Full Text Available Abstract Background While full disclosure of information on placebo control in participant information leaflets (PILs in a clinical trial is ethically required during informed consent, there have been concerning voices such complete disclosures may increase unnecessary nocebo responses, breach double-blind designs, and/or affect direction of trial outcomes. Taking an example of acupuncture studies, we aimed to examine what participants are told about placebo controls in randomized, placebo-controlled trials, and how it may affect blinding and trial outcomes. Methods Authors of published randomized, placebo-controlled trials of acupuncture were identified from PubMed search and invited to provide PILs for their trials. The collected PILs were subjected to content analysis and categorized based on degree of information disclosure on placebo. Blinding index (BI as a chance-corrected measurement of blinding was calculated and its association with different information disclosure was examined. The impact of different information disclosure from PILs on primary outcomes was estimated using a random effects model. Results In 65 collected PILs, approximately 57% of trials fully informed the participants of placebo control, i.e. full disclosure, while the rest gave deceitful or no information on placebo, i.e. no disclosure. Placebo groups in the studies with no disclosure tended to make more opposite guesses on the type of received intervention than those with disclosure, which may reflect wishful thinking (BI −0.21 vs. −0.16; p = 0.38. In outcome analysis, studies with no disclosure significantly favored acupuncture than those with full disclosure (standardized mean difference − 0.43 vs. −0.12; p = 0.03, probably due to enhanced expectations. Conclusions How participants are told about placebos can be another potential factor that may influence participant blinding and study outcomes by possibly modulating patient expectation. As we

Involvement of MrgprC in Electroacupuncture Analgesia for Attenuating CFA-Induced Thermal Hyperalgesia by Suppressing the TRPV1 Pathway

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Ying-jun Liu

2018-01-01

Full Text Available Mas-related G-protein-coupled receptor C (MrgprC plays an important role in modulating chronic inflammatory pain. Electroacupuncture (EA has a satisfactory analgesic effect on chronic pain. This study aimed to investigate the involvement of MrgprC and its transient receptor potential vanilloid 1 (TRPV1 pathway in EA analgesia in chronic inflammatory pain. Chronic inflammatory pain was induced by subcutaneously injecting complete Freund’s adjuvant (CFA into the left hind paw. EA (2/100 Hz stimulation was administered. MrgprC siRNAs were intrathecally administered to inhibit MrgprC expression, and bovine adrenal medulla 8-22 (BAM8-22 was used to activate MrgprC. The mechanical allodynia was decreased by EA significantly since day 3. The piled analgesic effect of EA was partially blocked by 6 intrathecal administrations of MrgprC siRNA. Both EA and BAM8-22 could downregulate the expression of TRPV1 and PKC in both the DRG and the SCDH. Both EA and BAM8-22 could also decrease the TRPV1 translocation and p-TRPV1 level in both the DRG and the SCDH. The effects of EA on PKCε, TRPV1 translocation, and p-TRPV1 in both the DRG and the SCDH were reversed by MrgprC siRNA. The results indicated that MrgprC played crucial roles in chronic pain modulation and was involved in EA analgesia partially through the regulation of TRPV1 function at the DRG and SCDH levels.

Involvement of MrgprC in Electroacupuncture Analgesia for Attenuating CFA-Induced Thermal Hyperalgesia by Suppressing the TRPV1 Pathway.

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Liu, Ying-Jun; Lin, Xiao-Xi; Fang, Jian-Qiao; Fang, Fang

2018-01-01

Mas-related G-protein-coupled receptor C (MrgprC) plays an important role in modulating chronic inflammatory pain. Electroacupuncture (EA) has a satisfactory analgesic effect on chronic pain. This study aimed to investigate the involvement of MrgprC and its transient receptor potential vanilloid 1 (TRPV1) pathway in EA analgesia in chronic inflammatory pain. Chronic inflammatory pain was induced by subcutaneously injecting complete Freund's adjuvant (CFA) into the left hind paw. EA (2/100 Hz) stimulation was administered. MrgprC siRNAs were intrathecally administered to inhibit MrgprC expression, and bovine adrenal medulla 8-22 (BAM8-22) was used to activate MrgprC. The mechanical allodynia was decreased by EA significantly since day 3. The piled analgesic effect of EA was partially blocked by 6 intrathecal administrations of MrgprC siRNA. Both EA and BAM8-22 could downregulate the expression of TRPV1 and PKC in both the DRG and the SCDH. Both EA and BAM8-22 could also decrease the TRPV1 translocation and p-TRPV1 level in both the DRG and the SCDH. The effects of EA on PKC ε , TRPV1 translocation, and p-TRPV1 in both the DRG and the SCDH were reversed by MrgprC siRNA. The results indicated that MrgprC played crucial roles in chronic pain modulation and was involved in EA analgesia partially through the regulation of TRPV1 function at the DRG and SCDH levels.

Stellate ganglion blockade for analgesia following upper limb surgery.

LENUS (Irish Health Repository)

McDonnell, J G

2012-01-31

We report the successful use of a stellate ganglion block as part of a multi-modal postoperative analgesic regimen. Four patients scheduled for orthopaedic surgery following upper limb trauma underwent blockade of the stellate ganglion pre-operatively under ultrasound guidance. Patients reported excellent postoperative analgesia, with postoperative VAS pain scores between 0 and 2, and consumption of morphine in the first 24 h ranging from 0 to 14 mg. While these are preliminary findings, and must be confirmed in a clinical trial, they highlight the potential for stellate ganglion blockade to provide analgesia following major upper limb surgery.

Efficacy of clonidine as an adjuvant to bupivacaine for caudal analgesia in children undergoing sub-umbilical surgery

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Aruna Parameswari

2010-01-01

Full Text Available Caudal epidural analgesia with bupivacaine is very popular in paediatric anaesthesia for providing intra- and postoperative analgesia. Several adjuvants have been used to prolong the action of bupivacaine. We evaluated the efficacy of clonidine added to bupivacaine in prolonging the analgesia produced by caudal bupivacaine in children undergoing sub-umbilical surgery. One hundred children, age one to three years, undergoing sub-umbilical surgery, were prospectively randomized to one of two groups: caudal analgesia with 1 ml/kg of 0.25% bupivacaine in normal saline (Group A or caudal analgesia with 1 ml/kg of 0.25% bupivacaine with 1 μg/kg of clonidine in normal saline (Group B. Post-operative pain was assessed for 24 hours using the FLACC scale. The mean duration of analgesia was significantly longer in Group B (593.4 ± 423.3 min than in Group A (288.7 ± 259.1 min; P < 0.05. The pain score assessed using FLACC scale was compared between the two groups, and children in Group B had lower pain scores, which was statistically significant. The requirement of rescue medicine was lesser in Group B. Clonidine in a dose of 1 μg/kg added to 0.25% bupivacaine for caudal analgesia, during sub-umbilical surgeries, prolongs the duration of analgesia of bupivacaine, without any side effects.

Obstetrical and perinatal outcomes in patients with or without obstetric analgesia during labor

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Piedrahíta-Gutiérrez, Dany Leandro

2016-07-01

Full Text Available Objective: To describe and compare the obstetric and perinatal outcomes in patients with or without obstetric analgesia during labor, and to determine whether such analgesia is associated with adverse maternal or perinatal outcomes. Methodology: Comparative, retrospective, descriptive study, between January and November 2014, that included 502 healthy patients with normal pregnancies, out of which 250 received obstetric analgesia. The groups were compared as to maternal and perinatal outcomes. Results: Young, single and nulliparous mothers predominated; delivery was vaginal in 86 % of the cases, and by caesarean section in 14 %. Obstetric analgesia was associated with longer duration of the second stage of labor, instrumental delivery and cesarean section due to arrest of dilatation or fetal bradycardia; however, it was not related with higher incidence of postpartum hemorrhage or adverse perinatal outcomes such as meconium-stained amniotic fluid, Apgar under 5 at one minute or under 7 at 5 minutes, the need for neonatal resuscitation or for admission to NICU. Conclusion: Obstetric analgesia increases the duration of the second stage of labor and can increase the rate of caesarean sections and instrumental delivery, but it is not associated with adverse maternal or perinatal outcomes. Therefore, its use in labor is justified.

High frequency electrical stimulation concurrently induces central sensitization and ipsilateral inhibitory pain modulation.

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Vo, L; Drummond, P D

2013-03-01

In healthy humans, analgesia to blunt pressure develops in the ipsilateral forehead during various forms of limb pain. The aim of the current study was to determine whether this analgesic response is induced by ultraviolet B radiation (UVB), which evokes signs of peripheral sensitization, or by high-frequency electrical stimulation (HFS), which triggers signs of central sensitization. Before and after HFS and UVB conditioning, sensitivity to heat and to blunt and sharp stimuli was assessed at and adjacent to the treated site in the forearm. In addition, sensitivity to blunt pressure was measured bilaterally in the forehead. The effect of ipsilateral versus contralateral temple cooling on electrically evoked pain in the forearm was then examined, to determine whether HFS or UVB conditioning altered inhibitory pain modulation. UVB conditioning triggered signs of peripheral sensitization, whereas HFS conditioning triggered signs of central sensitization. Importantly, ipsilateral forehead analgesia developed after HFS but not UVB conditioning. In addition, decreases in electrically evoked pain at the HFS-treated site were greater during ipsilateral than contralateral temple cooling, whereas decreases at the UVB-treated site were similar during both procedures. HFS conditioning induced signs of central sensitization in the forearm and analgesia both in the ipsilateral forehead and the HFS-treated site. This ipsilateral analgesia was not due to peripheral sensitization or other non-specific effects, as it failed to develop after UVB conditioning. Thus, the supra-spinal mechanisms that evoke central sensitization might also trigger a hemilateral inhibitory pain modulation process. This inhibitory process could sharpen the boundaries of central sensitization or limit its spread. © 2012 European Federation of International Association for the Study of Pain Chapters.

Age-related postoperative morphine requirements in children following major surgery--an assessment using patient-controlled analgesia (PCA)

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Hansen, Tom Giedsing; Henneberg, Steen Winther; Hole, P

1996-01-01

To investigate if small children require less morphine for postoperative analgesia than do older children and adolescents we analysed the morphine consumption pattern of 28 consecutive children on intravenous patient-controlled analgesia (PCA) following major surgery. The median age-specific morp......To investigate if small children require less morphine for postoperative analgesia than do older children and adolescents we analysed the morphine consumption pattern of 28 consecutive children on intravenous patient-controlled analgesia (PCA) following major surgery. The median age...

Postoperative opioid analgesia: time for a reconsideration?

DEFF Research Database (Denmark)

Kehlet, H; Rung, G W; Callesen, T

1996-01-01

Postoperative pain relief has improved in recent years with the development of new analgesics, additional routes of administration and the appearance of the hypothesis of preemptive as well as balanced analgesia (Kehlet H; Postoperative pain relief-what is the issue? Br J Anaesth 1994;72:375-8). ......Postoperative pain relief has improved in recent years with the development of new analgesics, additional routes of administration and the appearance of the hypothesis of preemptive as well as balanced analgesia (Kehlet H; Postoperative pain relief-what is the issue? Br J Anaesth 1994......;72:375-8). Many initial improvements simply involved the administration of opioid analgesics in new ways, such as continuous or on demand intravenous (i.v.) or epidural infusion. These methods allow lower total opioid dosages, provide a more stable concentration of opioid at the receptor and correspondingly...

Subcostal transversus abdominis plane block can improve analgesia after laparoscopic cholecystectomy

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Vladimir Vrsajkov

Full Text Available Abstract Background and goal of study: After laparoscopic cholecystectomy, patients have moderate pain in the early postoperative period. Some studies shown beneficial effects of subcostal transversus abdominis plane block on reducing this pain. Our goal was to investigate influence of subcostal transversus abdominis plane block on postoperative pain scores and opioid consumption. Materials and methods: We have randomized 76 patients undergoing laparoscopic cholecystectomy to receive either subcostal transversus abdominis plane block (n = 38 or standard postoperative analgesia (n = 38. First group received bilateral ultrasound guided subcostal transversus abdominis plane block with 20 mL of 0.33% bupivacaine per side before operation and tramadol 1 mg.kg−1 IV for pain breakthrough (≥6. Second group received after operation tramadol 1 mg.kg−1/6 h as standard hospital analgesia protocol. Both groups received acetaminophen 1 g/8 h IV and metamizole 2.5 g/12 h. Pain at rest was recorded for each patient using NR scale (0–10 in period of 10 min, 30 min, 2 h, 4 h, 8 h, 12 h and 16 h after the surgery. Results and discussion: We obtained no difference between groups according age, weight, intraoperative fentanyl consumption and duration of surgery. Subcostal transversus abdominis plane block significantly reduced postoperative pain scores compared to standard analgesia in all periods after surgery. Tramadol consumption was significantly lower in the subcostal transversus abdominis plane (24.29 ± 47.54 g than in the standard analgesia group (270.2 ± 81.9 g (p = 0.000. Conclusion: Our results show that subcostal transversus abdominis plane block can provide superior postoperative analgesia and reduction in opioid requirements after laparoscopic cholecystectomy.

[Subcostal transversus abdominis plane block can improve analgesia after laparoscopic cholecystectomy].

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Vrsajkov, Vladimir; Mančić, Nedjica; Mihajlović, Dunja; Milićević, Suzana Tonković; Uvelin, Arsen; Vrsajkov, Jelena Pantić

After laparoscopic cholecystectomy, patients have moderate pain in the early postoperative period. Some studies shown beneficial effects of subcostal transversus abdominis plane block on reducing this pain. Our goal was to investigate influence of subcostal transversus abdominis plane block on postoperative pain scores and opioid consumption. We have randomized 76 patients undergoing laparoscopic cholecystectomy to receive either subcostal transversus abdominis plane block (n=38) or standard postoperative analgesia (n=38). First group received bilateral ultrasound guided subcostal transversus abdominis plane block with 20mL of 0.33% bupivacaine per side before operation and tramadol 1mg.kg -1 IV for pain breakthrough (≥6). Second group received after operation tramadol 1mg.kg -1 /6h as standard hospital analgesia protocol. Both groups received acetaminophen 1g/8h IV and metamizole 2.5g/12h. Pain at rest was recorded for each patient using NR scale (0-10) in period of 10min, 30min, 2h, 4h, 8h, 12h and 16h after the surgery. We obtained no difference between groups according age, weight, intraoperative fentanyl consumption and duration of surgery. Subcostal transversus abdominis plane block significantly reduced postoperative pain scores compared to standard analgesia in all periods after surgery. Tramadol consumption was significantly lower in the subcostal transversus abdominis plane (24.29±47.54g) than in the standard analgesia group (270.2±81.9g) (p=0.000). Our results show that subcostal transversus abdominis plane block can provide superior postoperative analgesia and reduction in opioid requirements after laparoscopic cholecystectomy. Copyright © 2017 Sociedade Brasileira de Anestesiologia. Publicado por Elsevier Editora Ltda. All rights reserved.

Epidural Analgesia Versus Patient-Controlled Analgesia for Pain Relief in Uterine Artery Embolization for Uterine Fibroids: A Decision Analysis

International Nuclear Information System (INIS)

Kooij, Sanne M. van der; Moolenaar, Lobke M.; Ankum, Willem M.; Reekers, Jim A.; Mol, Ben Willem J.; Hehenkamp, Wouter J. K.

2013-01-01

Purpose: This study was designed to compare the costs and effects of epidural analgesia (EDA) to those of patient-controlled intravenous analgesia (PCA) for postintervention pain relief in women having uterine artery embolization (UAE) for systematic uterine fibroids. Methods: Cost-effectiveness analysis (CEA) based on data from the literature by constructing a decision tree to model the clinical pathways for estimating the effects and costs of treatment with EDA and PCA. Literature on EDA for pain-relief after UAE was missing, and therefore, data on EDA for abdominal surgery were used. Outcome measures were compared costs to reduce one point in visual analogue score (VAS) or numeric rating scale (NRS) for pain 6 and 24 h after UAE and risk for complications. Results: Six hours after the intervention, the VAS was 3.56 when using PCA and 2.0 when using EDA. The costs for pain relief in women undergoing UAE with PCA and EDA were €191 and €355, respectively. The costs for EDA to reduce the VAS score 6 h after the intervention with one point compared with PCA were €105 and €179 after 24 h. The risk of having a complication was 2.45 times higher when using EDA. Conclusions: The results of this indirect comparison of EDA for abdominal surgery with PCA for UAE show that EDA would provide superior analgesia for post UAE pain at 6 and 24 h but with higher costs and an increased risk of complications

Chemically modified tetracyclines an emerging host modulator in chronic periodontitis patients: A randomized, double-blind, placebo-controlled, clinical trial.

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Alyousef, Abdullah A; Divakar, Darshan Devang; Muzaheed

2017-09-01

Although periodontal diseases are caused by some of the specific pathogens, most of the tissue damage is caused by the host reaction to disease and not actually by the infections. Therefore, host modulatory therapy (HMT) has advanced benefit for the treatment of periodontitis, which works basically by reducing tissue destruction and regeneration in periodontium by altering the critical aspects of host response regulation and up regulating defensive regenerative responses. The present study was conducted with the goal to test an innovative therapeutic option using chemically modified tetracycline in patients affected with generalized, moderate and severe chronic periodontitis. We assumed that CMT might have the potential to provoke an assessable clinical result and pharmacologically impede the level inflammatory flow. CMT (incyclinide) treated group had significantly higher CAL (clinical attachment) values than Placebo Control suggesting an improved CAL in CMT treatment. Host modulation therapy width incyclinide can be as an adjunct to conventional nonsurgical therapies without antimicrobial resistance. Progress was noticed in the clinical parameters but not the serum CRP level in our study establishing the role of CMTs in controlling chronic periodontitis. Also CMT treatment indicates its role in anti-inflammatory process as it inhibited IL-12 and TNF alpha but IL-10 level was not affected. However, more randomized placebo-controlled clinical trials with large sample size are required in order to authenticate the usage of CMTs in chronic periodontitis treatment. Based on this understanding, exploration of the novel, low-cost synthetic inhibitors that can be used as potential therapeutic agents, has been tested. Copyright © 2017 Elsevier Ltd. All rights reserved.

Neuromodulation of conditioned placebo/nocebo in heat pain: anodal vs cathodal transcranial direct current stimulation to the right dorsolateral prefrontal cortex.

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Egorova, Natalia; Yu, Rongjun; Kaur, Navneet; Vangel, Mark; Gollub, Randy L; Dougherty, Darin D; Kong, Jian; Camprodon, Joan A

2015-07-01

Placebo and nocebo play an important role in clinical practice and medical research. Modulating placebo/nocebo responses using noninvasive brain stimulation methods, such as transcranial direct current stimulation (tDCS), has the potential to harness these effects to therapeutic benefit in a clinical setting. In this study, we assessed the effect of anodal and cathodal tDCS over the right dorsolateral prefrontal cortex (rDLPFC) on conditioned placebo/nocebo cue response to heat pain. Two matched groups of healthy volunteers were subjected to an identical session of conditioning, during which low and high cues (abstract images) were associated with low and high pain levels, respectively. Twenty-minute 2-mA tDCS (either anodal or cathodal) over the rDLPFC was applied. The influence of tDCS current polarity (anodal vs cathodal) on placebo and nocebo was assessed, using subjects' pain ratings in response to identical pain preceded by the conditioned high or low cues. The duration of cue presentation varied to allow either fully conscious or subliminal processing. Significant placebo and nocebo effects in the anodal but not the cathodal group were elicited with the conditioning paradigm. This study provides evidence of a possibility to modulate the conditioned placebo and nocebo effect by changing the excitability of the rDLPFC using tDCS.

Can oxytocin augmentation modify the risk of epidural analgesia by maternal age in cesarean sections?

Science.gov (United States)

Rossen, Janne; Klungsøyr, Kari; Albrechtsen, Susanne; Løkkegård, Ellen; Rasmussen, Steen; Bergholt, Thomas; Skjeldestad, Finn E

2018-03-07

Maternal age is an established risk factor for cesarean section; epidural analgesia and oxytocin augmentation may modify this association. We investigated the effects and interactions of oxytocin augmentation, epidural analgesia and maternal age on the risk of cesarean section. In all, 416 386 nulliparous women with spontaneous onset of labor, ≥37 weeks of gestation and singleton infants with a cephalic presentation during 2000-2011 from Norway and Denmark were included [Ten-group classification system (Robson) group 1]. In this case-control study the main exposure was maternal age; epidural analgesia, oxytocin augmentation, birthweight and time period were explanatory variables. Chi-square test and logistic regression were used to estimate associations and interactions. The cesarean section rate increased consistently with advancing maternal age, both overall and in strata of epidural analgesia and oxytocin augmentation. We observed strong interactions between maternal age, oxytocin augmentation and epidural analgesia for the risk of cesarean section. Women with epidural analgesia generally had a reduced adjusted odds ratio when oxytocin was used compared with when it was not used. In Norway, this applied to all maternal age groups but in Denmark only for women ≥30 years. Among women without epidural, oxytocin augmentation was associated with an increased odds ratio for cesarean section in Denmark, whereas no difference was observed in Norway. Oxytocin augmentation in nulliparous women with epidural analgesia is associated with a reduced risk of cesarean section in labor with spontaneous onset. © 2018 Nordic Federation of Societies of Obstetrics and Gynecology.

Unpredictability of regression of analgesia during the continuous postoperative extradural infusion of bupivacaine

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Mogensen, T; Hjortsø, N C; Bigler, D

1988-01-01

Twenty-four otherwise healthy patients scheduled for elective major abdominal surgery received general anaesthesia plus lumbar extradural analgesia. A loading dose of 0.5% plain bupivacaine was given to produce sensory analgesia (pin prick) from T4 to S5 and followed by a continuous infusion of 0...

Early versus late initiation of epidural analgesia for labour.

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Sng, Ban Leong; Leong, Wan Ling; Zeng, Yanzhi; Siddiqui, Fahad Javaid; Assam, Pryseley N; Lim, Yvonne; Chan, Edwin S Y; Sia, Alex T

2014-10-09

Pain during childbirth is arguably the most severe pain some women may experience in their lifetime. Epidural analgesia is an effective form of pain relief during labour. Many women have concerns regarding its safety. Furthermore, epidural services and anaesthetic support may not be available consistently across all centres. Observational data suggest that early initiation of epidural may be associated with an increased risk of caesarean section, but the same findings were not seen in recent randomised controlled trials. More recent guidelines suggest that in the absence of a medical contraindication, maternal request is a sufficient medical indication for pain relief during labour. The choice of analgesic technique, agent, and dosage is based on many factors, including patient preference, medical status, and contraindications. There is no systematically reviewed evidence on the maternal and foetal outcomes and safety of this practice. This systematic review aimed to summarise the effectiveness and safety of early initiation versus late initiation of epidural analgesia in women. We considered the obstetric and fetal outcomes relevant to women and side effects of the treatments, including risk of caesarean section, instrumental birth and time to birth. We searched the Cochrane Pregnancy and Childbirth Group's Trials Register (12 February 2014), the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library 2014, Issue 1), MEDLINE (January 1966 to February 2014), Embase (January 1980 to February 2014) and reference lists of retrieved studies. We included all randomised controlled trials involving women undergoing epidural labour analgesia that compared early initiation versus late initiation of epidural labour analgesia. Two review authors independently assessed trials for inclusion, extracted the data and assessed the trial quality. Data were checked for accuracy. We included nine studies with a total of 15,752 women.The overall risk of bias of

Analgesia for pain control during extracorporeal shock wave lithotripsy: Current status

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Narmada P Gupta

2008-01-01

Conclusion: The ideal analgesic, offering optimal pain control, minimal side effects, and cost-effectiveness is still elusive. Opioids administered using various techniques, provide effective analgesia, but require active monitoring of patient for potential adverse effects. Combination therapy (oral NSAID and occlusive dressing of EMLA, DMSO with lidocaine offers an effective alternative mode for achieving analgesia with minimal morbidity. This therapy avoids the need for general anesthesia, injectable analgesics, and opioids along with their side effects.

Subcostal transversus abdominis plane block can improve analgesia after laparoscopic cholecystectomy

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Vladimir Vrsajkov

2018-03-01

Full Text Available Background and goal of study: After laparoscopic cholecystectomy, patients have moderate pain in the early postoperative period. Some studies shown beneficial effects of subcostal transversus abdominis plane block on reducing this pain. Our goal was to investigate influence of subcostal transversus abdominis plane block on postoperative pain scores and opioid consumption. Materials and methods: We have randomized 76 patients undergoing laparoscopic cholecystectomy to receive either subcostal transversus abdominis plane block (n = 38 or standard postoperative analgesia (n = 38. First group received bilateral ultrasound guided subcostal transversus abdominis plane block with 20 mL of 0.33% bupivacaine per side before operation and tramadol 1 mg.kg−1 IV for pain breakthrough (≥6. Second group received after operation tramadol 1 mg.kg−1/6 h as standard hospital analgesia protocol. Both groups received acetaminophen 1 g/8 h IV and metamizole 2.5 g/12 h. Pain at rest was recorded for each patient using NR scale (0–10 in period of 10 min, 30 min, 2 h, 4 h, 8 h, 12 h and 16 h after the surgery. Results and discussion: We obtained no difference between groups according age, weight, intraoperative fentanyl consumption and duration of surgery. Subcostal transversus abdominis plane block significantly reduced postoperative pain scores compared to standard analgesia in all periods after surgery. Tramadol consumption was significantly lower in the subcostal transversus abdominis plane (24.29 ± 47.54 g than in the standard analgesia group (270.2 ± 81.9 g (p = 0.000. Conclusion: Our results show that subcostal transversus abdominis plane block can provide superior postoperative analgesia and reduction in opioid requirements after laparoscopic cholecystectomy. Resumo: Justificativa e objetivo: Após a colecistectomia laparoscópica, os pacientes apresentam dor moderada no pós-operatório imediato. Alguns estudos mostraram

[Obstetric analgesia and anesthesia in Switzerland in 1999].

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Zwetsch-Rast, G; Schneider, M C; Siegemund, M

2002-02-01

This survey investigated the common practice of obstetric analgesia and anaesthesia in Swiss hospitals and evaluated the influence of the Swiss interest group for obstetric anaesthesia. In March 1999 we submitted 145 questionnaires to all Swiss hospitals providing an obstetric service. The rate of epidural analgesia (EA) was higher in large hospitals (> 1,000 births/year) than in small services. EA was maintained by continuous infusion techniques in 53% of the responding hospitals. For elective caesarean section, spinal anaesthesia (SA) and EA were performed in 77% and 16% of the patients, respectively. General anaesthesia (5%) was only used in small hospitals (interest group for obstetric anaesthesia, as well as the expectations of pregnant women, increased the numbers of regional anaesthesia compared with the first survey in 1992.

Neonatal respiratory depression associated with epidural analgesia

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Alberto Gálvez Toro

2013-06-01

Full Text Available Background: Epidural analgesia is the most effective analgesics used during childbirth but is not without its problems.In the Hospital San Juan de la Cruz of Ubeda from November 2011 we have detected 3 cases of newborn infants with signs of respiratory depression. Appeared in them: normal cardiotocographic records during childbirth, use of epidural associated with fentanyl, termination by vacuum and elevated temperature in one case.ObjectivesKnow if the neonatal adaptation to extrauterine life may be influenced by the use of epidural analgesia in childbirth. Review what role can have the rise in maternal temperature and the use of epidural fentanyl with the appearance of newborn respiratory distress.MethodsLiterature Review conducted in February of 2012 in Pubmed and the Cochrane Library, using the key words: childbirth, epidural analgesia, neonatal respiratory depression.ResultsOn the respiratory depression associated with fentanyl, a Cochrane review found indicating that newborns of mothers with an epidural, had a lower pH and were less need for administration of naloxone.On PubMed we find a review study that indicates that the respiratory depression caused by the administration of opioids via neuroaxial is rare, placing it below 1 per 1000, and a clinical case that concluded that doses of fentanyl exceeding 300 µg (approx. 5 µg/kg for 4 hours previous to childbirth, have a high risk of neonatal respiratory depression at birth.The same Cochrane review indicates that the women with epidural analgesia had increased risk of maternal fever of at least 38 ° C and a recent cohort study relates this increase in temperature with a greater likelihood of neonatal adverse events (from 37.5 ° C.ConclusionsThe studies found considered safe epidurals to the neonate and the mother, except when certain conditions are met. The literature and our clinical experience have been reports linking neonatal respiratory depression with increasing temperature (37

Post-radiation analgesia at rats and function of endogenous opiates

International Nuclear Information System (INIS)

Slivkova, E.; Smajda, B.; Paulikova, E.; Lackova, M.

2002-01-01

In this work post-radiation analgesia at rats as well as the function of endogenous opiates were tested. Males of rats were irradiated all-body dose 6 Gy. Hot-plate test was used. Dose of 8 mg of naloxone per kg of animal blocked perception of ache. This dose blocked analgetic effect of ionising radiation. Activity of phagocyte activity and phagocyte index were enhanced at rats which obtained naloxone. Authors stated that opiate system play a significant role at analgesia induced by radiation at rats and can modify response of immunity system on the stress

Analgesia peridural contínua: análise da eficácia, efeitos adversos e fatores de risco para ocorrência de complicações Analgesia peridural continua: análisis de la eficacia, efectos adversos y factores de riesgo para ocurrencia de complicaciones Continuous epidural analgesia: analysis of efficacy, side effects and risk factors

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Leonardo Teixeira Domingues Duarte

2004-06-01

Full Text Available JUSTIFICATIVA E OBJETIVOS: A analgesia promovida pela infusão peridural de anestésico local com analgésicos opióides é reconhecidamente de boa qualidade e com poucos efeitos adversos. O objetivo deste estudo foi determinar o número, formas e gravidade das complicações pós-operatórias relacionadas à analgesia peridural e à inserção do cateter peridural. MÉTODO: Foram avaliados, retrospectivamente, 469 pacientes submetidos à analgesia peridural pós-operatória entre 18/10/1999 e 18/10/2001. A analgesia peridural foi conduzida usando-se solução de bupivacaína a 0,1% com fentanil (1 a 5 µg.ml-1, iniciando-se a infusão de 3 ml.h-1. A velocidade de infusão era ajustada de acordo com a queixa álgica do paciente. Foram analisadas as seguintes variáveis: a duração da infusão peridural; a ocorrência de efeitos adversos e complicações, relacionando-os aos dados demográficos, tipo de cirurgia e posição do cateter peridural; e a qualidade da analgesia obtida com a técnica (escala analógico-visual de dor e índice de satisfação do paciente. RESULTADOS: Os cateteres peridurais permaneceram implantados uma média de 2,2 dias, variando de 6 horas a 10 dias, e o índice global de complicações relacionadas à técnica foi de 46,3%, sendo que a maioria foi de pequena magnitude, sem repercussão clínica. Destas, 13,9% estavam relacionadas diretamente ao cateter peridural (desconexão, exteriorização, dor lombar, inflamação e infecção local. Outras complicações mais comumente encontradas foram vômitos e retenção urinária. A analgesia pós-operatória foi efetiva com 97,2% dos pacientes referindo satisfação com a técnica. Pacientes sem dor ou com dor leve, no primeiro, segundo e terceiro dias de pós-operatório, constituíram, respectivamente, 80,1%, 92,8% e 93,3% da população estudada. CONCLUSÕES: A analgesia peridural contínua é efetiva e segura. As complicações ocorridas não foram consideradas graves

Influence of prior information on pain involves biased perceptual decision-making.

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Wiech, Katja; Vandekerckhove, Joachim; Zaman, Jonas; Tuerlinckx, Francis; Vlaeyen, Johan W S; Tracey, Irene

2014-08-04

Prior information about features of a stimulus is a strong modulator of perception. For instance, the prospect of more intense pain leads to an increased perception of pain, whereas the expectation of analgesia reduces pain, as shown in placebo analgesia and expectancy modulations during drug administration. This influence is commonly assumed to be rooted in altered sensory processing and expectancy-related modulations in the spinal cord, are often taken as evidence for this notion. Contemporary models of perception, however, suggest that prior information can also modulate perception by biasing perceptual decision-making - the inferential process underlying perception in which prior information is used to interpret sensory information. In this type of bias, the information is already present in the system before the stimulus is observed. Computational models can distinguish between changes in sensory processing and altered decision-making as they result in different response times for incorrect choices in a perceptual decision-making task (Figure S1A,B). Using a drift-diffusion model, we investigated the influence of both processes in two independent experiments. The results of both experiments strongly suggest that these changes in pain perception are predominantly based on altered perceptual decision-making. Copyright © 2014 The Authors. Published by Elsevier Inc. All rights reserved.

A Machine Learning Approach to Identifying Placebo Responders in Late-Life Depression Trials.

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Zilcha-Mano, Sigal; Roose, Steven P; Brown, Patrick J; Rutherford, Bret R

2018-01-11

Despite efforts to identify characteristics associated with medication-placebo differences in antidepressant trials, few consistent findings have emerged to guide participant selection in drug development settings and differential therapeutics in clinical practice. Limitations in the methodologies used, particularly searching for a single moderator while treating all other variables as noise, may partially explain the failure to generate consistent results. The present study tested whether interactions between pretreatment patient characteristics, rather than a single-variable solution, may better predict who is most likely to benefit from placebo versus medication. Data were analyzed from 174 patients aged 75 years and older with unipolar depression who were randomly assigned to citalopram or placebo. Model-based recursive partitioning analysis was conducted to identify the most robust significant moderators of placebo versus citalopram response. The greatest signal detection between medication and placebo in favor of medication was among patients with fewer years of education (≤12) who suffered from a longer duration of depression since their first episode (>3.47 years) (B = 2.53, t(32) = 3.01, p = 0.004). Compared with medication, placebo had the greatest response for those who were more educated (>12 years), to the point where placebo almost outperformed medication (B = -0.57, t(96) = -1.90, p = 0.06). Machine learning approaches capable of evaluating the contributions of multiple predictor variables may be a promising methodology for identifying placebo versus medication responders. Duration of depression and education should be considered in the efforts to modulate placebo magnitude in drug development settings and in clinical practice. Copyright © 2018 American Association for Geriatric Psychiatry. Published by Elsevier Inc. All rights reserved.

Labour analgesia with intrathecal fentanyl decreases maternal stress.

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Cascio, M; Pygon, B; Bernett, C; Ramanathan, S

1997-06-01

Lumbar epidural analgesia (LEA) decreases maternal stress as measured by maternal circulating plasma catecholamine concentrations. Intrathecal fentanyl (ITF) provides effective labour analgesia but its effect on maternal epinephrine (Epi) and norepinephrine (NE) concentrations is not known. This study assesses whether ITF reduces maternal stress in the same manner as conventional LEA. Twenty-four healthy women in active labour received either 25 micrograms ITF (n = 12) or epidural lidocaine 1.5% (n = 12) for analgesia. Venous blood samples were collected before anaesthesia and at five minute intervals for 30 min following anaesthesia for the measurement of plasma Epi and NE by high performance liquid chromatography. Maternal blood pressure (BP), heart rate (HR), visual analog scores (VAS) to pain and pruritus were recorded at the same time. Both ITF and LEA decreased pain VAS scores, maternal BP, and plasma Epi concentrations with only minimal effects on plasma NE concentrations. Intrathecal fentanyl (ITF) and LEA reduced plasma epi to a similar extent, with ITF reducing the levels slightly faster than LEA. Intrathecal fentanyl(ITF) and LEA reduced plasma Epi concentrations by 52% and 51%, respectively (P value < 0.01). We conclude that ITF is as effective as LEA in producing pain relief in the labouring patient. Intrathecal Fentanyl (ITF) is also capable of reducing maternal plasma epinephrine concentration, thus avoiding the possibly deleterious side effects of excess amounts of this catecholamine during labour.

Analgesia de parto: estudo comparativo entre anestesia combinada raquiperidural versus anestesia peridural contínua Analgesia de parto: estudio comparativo entre anestesia combinada raqui-peridural versus anestesia peridural continua Labor analgesia: a comparative study between combined spinal-epidural anesthesia versus continuous epidural anesthesia

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Carlos Alberto de Figueiredo Côrtes

2007-02-01

Full Text Available JUSTIFICATIVA E OBJETIVOS: O alívio da dor no trabalho de parto tem recebido atenção constante visando ao bem-estar materno, diminuindo o estresse causado pela dor e reduzindo as conseqüências deste sobre o concepto. Inúmeras técnicas podem ser utilizadas para analgesia de parto. Este trabalho teve como objetivo comparar a técnica peridural contínua com a combinada, ambas com o uso de bupivacaína a 0,25% em excesso enantiomérico 50% e fentanil como agentes. MÉTODO: Participaram do estudo 40 parturientes em trabalho de parto com dilatação cervical entre 4 e 5 cm que foram distribuídas em dois grupos iguais de forma aleatória. O Grupo I recebeu anestesia peridural contínua. O Grupo II recebeu anestesia combinada. Foram avaliados: medidas antropométricas, idade gestacional, dilatação cervical, tempo entre o bloqueio e a ausência de dor por meio da escala analógica visual, possibilidade de deambulação, tempo entre o início da analgesia e a dilatação cervical completa, duração do período expulsivo, parâmetros hemodinâmicos maternos e vitalidade do recém-nascido. Possíveis complicações, como depressão respiratória, hipotensão arterial materna, prurido, náuseas e vômitos, também foram observadas. Para a comparação das médias utilizou-se o teste t de Student e para a paridade e tipo de parto utilizou-se o teste do Qui-quadrado. RESULTADOS: Não houve diferença estatística significativa entre os dois grupos em relação ao tempo entre o início da analgesia e a dilatação cervical completa, bem como em relação ao tempo da duração do período expulsivo, incidência de cesariana relacionada com a analgesia, parâmetros hemodinâmicos maternos e vitalidade do recém-nascido. CONCLUSÕES: Ambas as técnicas se mostraram eficazes e seguras para a analgesia do trabalho de parto, embora a técnica combinada tenha proporcionado um rápido e imediato alívio da dor. Estudos clínicos com maior número de casos s

[Placebo effect in Parkinson's disease].

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Miwa, Hideto

2007-02-01

"Placebo" is Latin for "I shall please". The placebo effect has been widely documented by randomized placebo-controlled drug studies. One of the best examples of placebo effectiveness is that have been shown in clinical trials of anti-parkinsonian drugs. The placebo effect is observable not only in drug trials but also with deep brain stimulation. Recent advances in research on the placebo effect in Parkinson's disease (PD) have suggested that motor symptoms of PD can be essentially improved by placebo. A recent study using positron emission tomography (PET) with raclopride demonstrated that release of endogeneous dopamine in the dorsal striatum occurs in placebo-responsive patients with PD. This suggests that placebo-induced expectation of clinical improvement may activate endogenous dopamine in the striatum, and that placebo effectiveness is thus achieved by endogenous dopamine supplementation. Indeed, decreased neuronal activities in the subthalamic nucleus (STN), that were recorded during surgery to implant deep brain stimulation electrodes, correlated well with placebo-induced clinical improvement in patients with PD. Although the detailed pathophysiological mechanism underlying the placebo effects remains uncertain, theoretically, the placebo effect has generally been explained by two different mechanisms: one is conditioning theory (pavlovian conditioning), and the other is cognitive theory (expectation of clinical improvement). Although both mechanisms may contribute to placebo effects, the placebo effect in PD may be attributed more to cognitive mechanisms such as expectation of improvement, because the placebo effect can be obtained in de novo PD patients. There have been accumulating findings that suggest a functional relationship between dopamine and the expectation of clinical improvement (reward). Further basic studies are required to clarify the complex link between dopamine and the reward system, but such findings will contribute to a better

Fetal effects of combined spinal-epidural vs epidural labour analgesia: a prospective, randomised double-blind study.

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Patel, N P; El-Wahab, N; Fernando, R; Wilson, S; Robson, S C; Columb, M O; Lyons, G R

2014-05-01

We have compared fetal heart rate patterns, Apgar scores and umbilical cord gas values following initiation of labour analgesia using either combined spinal-epidural or epidural. One hundred and fifteen healthy women requesting neuraxial analgesia in the first stage of labour were randomly assigned to receive either combined spinal-epidural (n = 62) or epidural analgesia (n = 53). Fetal heart rate traces, recorded for 30 min before and 60 min after neuraxial block, were categorised as normal, suspicious or pathological according to national guidelines. Sixty-one fetal heart rate tracings were analysed in the combined spinal-epidural group and 52 in the epidural group. No significant differences were found in fetal heart rate patterns, Apgar scores or umbilical artery and vein acid-base status between groups. However, in both combined spinal-epidural and epidural groups, there was a significant increase in the incidence of abnormal fetal heart rate patterns following neuraxial analgesia (p analgesia in the combined spinal-epidural group and zero before compared with 11 after in the epidural group. These changes comprised increased decelerations (p = 0.0045) (combined spinal-epidural group nine before and 14 after analgesia, epidural group four before and 16 after), increased late decelerations (p analgesia, epidural group zero before and eight after), and a reduction in acceleration rate (p = 0.034) (combined spinal-epidural group mean (SD) 12.2 (6.7) h(-1) before and 9.9 (6.1) h(-1) after analgesia, epidural group 11.0 (7.3) h(-1) before and 8.4 (5.9) h(-1) after). These fetal heart rate changes did not affect neonatal outcome in this healthy population. © 2014 The Association of Anaesthetists of Great Britain and Ireland.

Oral administration of analgesia and anxiolysis for pain associated with bone marrow biopsy.

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Talamo, Giampaolo; Liao, Jason; Bayerl, Michael G; Claxton, David F; Zangari, Maurizio

2010-03-01

Medical literature provides only scarce data about the degree of pain experienced by patients undergoing a bone marrow aspiration and biopsy (BMAB), and little is known about the factors that can modify the perception of pain. In this study, we evaluated the effectiveness of a combination of analgesia and anxiolysis in reducing the pain score of patients undergoing BMAB. Eighty-four consecutive adult patients underwent BMAB after local anesthesia with 5 mL of lidocaine hydrochloride 1% aqueous solution in the left posterior superior iliac crest. Analgesia was obtained with acetaminophen 650 mg and oxycodone 10 mg, and anxiolysis was obtained with lorazepam 2 mg, all drugs given once orally 30 min before the procedure. We assessed the pain level with the Wong-Baker Faces Pain Rating Scale, which distinguishes six levels of pain, from 0 to 5. The 34 patients who received an oral administration of analgesia and anxiolysis reported pain at lower levels, i.e., in the range of 0-2, more frequently than the 50 patients who underwent BMAB without analgesia/anxiolysis (78% vs 64%, respectively). Among several predictors analyzed using a multivariate regression model, three were found to be associated with decreased pain level: the use of analgesia/anxiolysis, male sex, and increase in age (all with p values <0.05). Length of the extracted bone specimen, body mass index, and need of a spinal needle for anesthesia in obese patients did not predict for pain level. An oral administration of prophylactic regimen of analgesia and anxiolysis, at the above-mentioned doses, produced a statistically significant reduction of the perception of pain in patients undergoing BMAB, but its effect did not seem to provide a major and clinically significant reduction of pain level.

Effect of postoperative epidural analgesia on rehabilitation and pain after hip fracture surgery

DEFF Research Database (Denmark)

Foss, Nicolai Bang; Kristensen, Morten Tange; Kristensen, Billy Bjarne

2005-01-01

Hip fracture surgery usually carries a high demand for rehabilitation and a significant risk of perioperative morbidity and mortality. Postoperative epidural analgesia may reduce morbidity and has been shown to facilitate rehabilitation in elective orthopedic procedures. No studies exist...... on the effect of postoperative epidural analgesia on pain and rehabilitation after hip fracture surgery....

Epidural Analgesia Versus Patient-Controlled Analgesia for Pain Relief in Uterine Artery Embolization for Uterine Fibroids: A Decision Analysis

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Kooij, Sanne M. van der, E-mail: s.m.vanderkooij@amc.uva.nl; Moolenaar, Lobke M.; Ankum, Willem M. [Academic Medical Centre, Department of Gynaecology (Netherlands); Reekers, Jim A. [Academic Medical Centre, Department of Radiology (Netherlands); Mol, Ben Willem J. [Academic Medical Centre, Department of Gynaecology (Netherlands); Hehenkamp, Wouter J. K. [VU University Medical Centre, Department of Gynaecology (Netherlands)

2013-12-15

Purpose: This study was designed to compare the costs and effects of epidural analgesia (EDA) to those of patient-controlled intravenous analgesia (PCA) for postintervention pain relief in women having uterine artery embolization (UAE) for systematic uterine fibroids. Methods: Cost-effectiveness analysis (CEA) based on data from the literature by constructing a decision tree to model the clinical pathways for estimating the effects and costs of treatment with EDA and PCA. Literature on EDA for pain-relief after UAE was missing, and therefore, data on EDA for abdominal surgery were used. Outcome measures were compared costs to reduce one point in visual analogue score (VAS) or numeric rating scale (NRS) for pain 6 and 24 h after UAE and risk for complications. Results: Six hours after the intervention, the VAS was 3.56 when using PCA and 2.0 when using EDA. The costs for pain relief in women undergoing UAE with PCA and EDA were Euro-Sign 191 and Euro-Sign 355, respectively. The costs for EDA to reduce the VAS score 6 h after the intervention with one point compared with PCA were Euro-Sign 105 and Euro-Sign 179 after 24 h. The risk of having a complication was 2.45 times higher when using EDA. Conclusions: The results of this indirect comparison of EDA for abdominal surgery with PCA for UAE show that EDA would provide superior analgesia for post UAE pain at 6 and 24 h but with higher costs and an increased risk of complications.

Comparison of ropivacaine (0.2%) with or without clonidine 1 μg/kg for epidural labor analgesia: A randomized controlled study

OpenAIRE

Indira Kumari; Kapil Sharma; Vikram Bedi; Madhan Mohan; Hemraj Tungaria; Manish Kumar Modi

2018-01-01

Background and Aims: The aim is to determine the effect of addition of clonidine to ropivacaine for epidural labor analgesia with regard to onset of analgesia, duration of analgesia, neonatal outcome, and quality of analgesia. Material and Methods: A total of 60 term parturients of the American Society of Anesthesiologists Grade I and II with uncomplicated pregnancy, vertex presentation, posted for on-demand epidural labor analgesia after informed consent were divided in two groups. Group ...

Placebo-induced somatic sensations: a multi-modal study of three different placebo interventions.

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Florian Beissner

Full Text Available Somatic sensations induced by placebos are a frequent phenomenon whose etiology and clinical relevance remains unknown. In this study, we have evaluated the quantitative, qualitative, spatial, and temporal characteristics of placebo-induced somatic sensations in response to three different placebo interventions: (1 placebo irritant solution, (2 placebo laser stimulation, and (3 imagined laser stimulation. The quality and intensity of evoked sensations were assessed using the McGill pain questionnaire and visual analogue scales (VAS, while subjects' sensation drawings processed by a geographic information system (GIS were used to measure their spatial characteristics. We found that all three interventions are capable of producing robust sensations most frequently described as "tingling" and "warm" that can reach consider-able spatial extent (≤ 205 mm² and intensity (≤ 80/100 VAS. Sensations from placebo stimulation were often referred to areas remote from the stimulation site and exhibit considerable similarity with referred pain. Interestingly, there was considerable similarity of qualitative features as well as spatial patterns across subjects and placebos. However, placebo laser stimulation elicited significantly stronger and more widespread sensations than placebo irritant solution. Finally, novelty seeking, a character trait assessed by the Temperament and Character Inventory and associated with basal dopaminergic activity, was less pronounced in subjects susceptible to report placebo-induced sensations. Our study has shown that placebo-induced sensations are frequent and can reach considerable intensity and extent. As multiple somatosensory subsystems are involved despite the lack of peripheral stimulus, we propose a central etiology for this phenomenon.

Intrapartum analgesia as a condition of human satisfaction at hospital

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Concetta Polizzi

2013-06-01

Full Text Available The study investigates parturients’ satisfaction with intrapartum analgesia. It aims to assess their opinions about hospital and health staff involved in delivery, besides investigating emotional control, locus control and bond between mothers and their newborn infants. A multidimensional approach has been used to investigate the variable of woman as a person, the variable of context and the variable of bond with the newborn infant. The study was conducted according to a quasi-experimental design, with a control group. The study was performed within the Analgesia and Intensive Care Operational Unit of the Maternal-Infant Department of the P. Giaccone University General Hospital of Palermo. It involved 60 women subdivided into two groups of 30 women each, the experimental group (women who requested intrapartum analgesia called the A group, and the control group (women who refused it called the B group. The following tools were administered: the STAI-Y (State-Trait Anxiety Inventory, form Y scale; the Depression Questionnaire of CBA (Cognitive Behavioural Assessment scale; the Locus of Control questionnaire; and an interview designed for the purpose. The experimental A group women exhibited lower levels of state anxiety and depression post-partum than those of the control B group; moreover, the women in the A group exhibited higher levels of external locus of control and evaluated delivery more positively than those of the B group. There were no significant differences with regard to the relationship with their newborn infants. The study shows that intrapartum analgesia provides hospitals with the possibility to satisfy women’s needs for safety and well-being.

How first time mothers experience the use of epidural analgesia

DEFF Research Database (Denmark)

Jepsen, Ingrid

2010-01-01

How first time mothers experience the use of epidural analgesia during birth Ingrid Jepsen, Midwife, SD, MPH, Kurt Dauer Keller cand.psych, PhD Contact email irj@ucn.dk Aim: to investigate the experiences of epidural analgesia as to the choice of epidurals, the changes in pain, the period from...... and two months later. The midwives were interviewed two hours after the birth. Method of analysis: The “Idealtype-” method, the “importance-” method and the “process-” method described by Bo Eneroth. Results: Two ideal-types were discovered: the worried and the unworried mother. Important and common...

Analgesia de parto em paciente com tetralogia de Fallot não corrigida: relato de caso Analgesia de parto en paciente con tetralogía de Fallot no corregida: relato de caso Labour analgesia in parturient with uncorrected tetralogy of Fallot: case report

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Florentino Fernandes Mendes

2005-02-01

Full Text Available JUSTIFICATIVA E OBJETIVOS: Embora a tetralogia de Fallot seja a mais comum das cardiopatias congênitas cianóticas, as publicações nacionais, relacionando essa doença com a prática anestésica são escassas. O objetivo deste relato é apresentar um caso de analgesia de parto em paciente portadora de tetralogia de Fallot não corrigida e diagnosticada durante a gestação. RELATO DO CASO: Paciente com 26 anos, 56 kg, 1,56 m, idade gestacional 32 semanas e 5 dias, com diagnóstico de tetralogia de Fallot realizado durante a gestação. Internou em trabalho de parto. A conduta obstétrica foi a de parto via baixa, sendo realizada analgesia através de bloqueio peridural com bupivacaína a 0,125% e fentanil (100 µg e colocação de cateter peridural. Após 1h30 minutos do início da analgesia, ocorreu o nascimento. O peso do recém-nascido foi 1485 g e o índice de Apgar 6 e 8 no primeiro e no quinto minutos, respectivamente. A paciente permaneceu estável e sem alterações hemodinâmicas e/ou eletrocardiográficas. CONCLUSÕES: A escolha da técnica anestésica é de fundamental importância no manuseio das pacientes com tetralogia de Fallot não corrigidas. Condições favoráveis do colo e boa dinâmica uterina, particularmente naquelas pacientes sem história de síncope, tornam-se imprescindíveis para uma boa indicação da analgesia de parto.JUSTIFICATIVA Y OBJETIVOS: Aunque la tetralogía de Fallot sea la más común de las cardiopatías congénitas cianóticas, las publicaciones nacionales, relacionando esa enfermedad con la práctica anestésica son escasas. El objetivo de este relato es presentar un caso de analgesia de parto en paciente portadora de tetralogía de Fallot no corregida y diagnosticada durante la gestación. RELATO DEL CASO: Paciente con 26 años, 56 kg, 1,56 m, edad gestacional 32 semanas y 5 días, con diagnóstico de tetralogía de Fallot realizado durante la gestación. Internó en trabajo de parto. La conducta

Hospitalization for partial nephrectomy was not associated with intrathecal opioid analgesia: Retrospective analysis.

Science.gov (United States)

Weingarten, Toby N; Del Mundo, Serena B; Yeoh, Tze Yeng; Scavonetto, Federica; Leibovich, Bradley C; Sprung, Juraj

2014-10-01

The aim of this retrospective study is to test the hypothesis that the use of spinal analgesia shortens the length of hospital stay after partial nephrectomy. We reviewed all patients undergoing partial nephrectomy for malignancy through flank incision between January 1, 2008, and June 30, 2011. We excluded patients who underwent tumor thrombectomy, used sustained-release opioids, or had general anesthesia supplemented by epidural analgesia. Patients were grouped into "spinal" (intrathecal opioid injection for postoperative analgesia) versus "general anesthetic" group, and "early" discharge group (within 3 postoperative days) versus "late" group. Association between demographics, patient physical status, anesthetic techniques, and surgical complexity and hospital stay were analyzed using multivariable logistic regression analysis. Of 380 patients, 158 (41.6%) were discharged "early" and 151 (39.7%) were "spinal" cases. Both spinal and early discharge groups had better postoperative pain control and used less postoperative systemic opioids. Spinal analgesia was associated with early hospital discharge, odds ratio 1.52, (95% confidence interval 1.00-2.30), P = 0.05, but in adjusted analysis was no longer associated with early discharge, 1.16 (0.73-1.86), P = 0.52. Early discharge was associated with calendar year, with more recent years being associated with early discharge. Spinal analgesia combined with general anesthesia was associated with improved postoperative pain control during the 1(st) postoperative day, but not with shorter hospital stay following partial nephrectomy. Therefore, unaccounted practice changes that occurred during more recent times affected hospital stay.

A randomized, controlled trial comparing local infiltration analgesia with epidural infusion for total knee arthroplasty

DEFF Research Database (Denmark)

Andersen, Karen Vestergaard; Bak, Marie; Christensen, Birgitte Viebæk

2010-01-01

There have been few studies describing wound infiltration with additional intraarticular administration of multimodal analgesia for total knee arthroplasty (TKA). In this study, we assessed the efficacy of wound infiltration combined with intraarticular regional analgesia with epidural infusion...

Analgesia after total hip replacement: epidural versus psoas ...

African Journals Online (AJOL)

tive analgesia following total hip replacement surgery. The research design was a ... matoma, intra-abdominal injury and pain due to spasm of the lumbar paravertebral ..... 2. Brown DL. Spinal, epidural, and caudal anesthesia In: Miller RD, ed.

Comparative Analysis of Different Types of Analgesia in Patients after Surgical Correction of Scoliotic Spinal Deformity

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M.A. Georgiyants

2013-03-01

Full Text Available A comparative study of epidural analgesia and anesthesia using opiates after surgical interventions for spinal scoliosis in children has beem carried out. Patients were divided into 2 groups. In the first one postoperative analgesia was carried out by intramuscular injection of promedol, in second one epidural analgesia was used with the constant introduction of ropivacaine. The authors studied the effect of these techniques on hemodynamics, the analysis of the subjective perception of pain by patients.

Intrapleural analgesia after endoscopic thoracic sympathectomy Analgesia intrapleural após simpatectomia videotoracoscópica

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Patrícia Gomes da Silva

2011-12-01

Full Text Available PURPOSE: To compare analgesia traditionally used for thoracic sympathectomy to intrapleural ropivacaine injection in two different doses. METHODS: Twenty-four patients were divided into three similar groups, and all of them received intravenous dipyrone. Group A received intravenous tramadol and intrapleural injection of saline solution. Group B received intrapleural injection of 0.33% ropivacaine, and Group C 0.5% ropivacaine. The following aspects were analyzed: inspiratory capacity, respiratory rate and pain. Pain was evaluated in the immediate postoperative period by means of the visual analog scale and over a one-week period. RESULTS: In Groups A and B, reduced inspiratory capacity was observed in the postoperative period. In the first postoperative 12 hours, only 12.5% of the patients in Groups B and C showed intense pain as compared to 25% in Group A. In the subsequent week, only one patient in Group A showed mild pain while the remainder reported intense pain. In Group B, half of the patients showed intense pain, and in Group C, only one presented intense pain. CONCLUSION: Intrapleural analgesia with ropivacaine resulted in less pain in the late postoperative period with better analgesic outcomes in higher doses, providing a better ventilatory pattern.OBJETIVO: Comparar a analgesia tradicionalmente utilizada para simpatectomia videotoracoscópica à injeção intrapleural de ropivacaína em duas doses diferentes. MÉTODOS: Vinte e quatro pacientes foram distribuídos em três grupos semelhantes, e todos eles receberam dipirona endovenosa. O grupo A recebeu tramadol endovenoso e injeção intrapleural de solução salina. O grupo B recebeu injeção intrapleural de ropivacaína a 0,33%, e Grupo C ropivacaína a 0,5%. Os aspectos analisados foram: capacidade inspiratória, freqüência respiratória e dor. A dor foi avaliada no período pós-operatório por meio da escala visual analógica e durante o período de uma semana. RESULTADOS

Validation of orthopedic postoperative pain assessment methods for dogs: a prospective, blinded, randomized, placebo-controlled study.

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Pascale Rialland

Full Text Available In the context of translational research, there is growing interest in studying surgical orthopedic pain management approaches that are common to humans and dogs. The validity of postoperative pain assessment methods is uncertain with regards to responsiveness and the potential interference of analgesia. The hypothesis was that video analysis (as a reference, electrodermal activity, and two subjective pain scales (VAS and 4A-VET would detect different levels of pain intensity in dogs after a standardized trochleoplasty procedure. In this prospective, blinded, randomized study, postoperative pain was assessed in 25 healthy dogs during a 48-hour time frame (T. Pain was managed with placebo (Group 1, n = 10, preemptive and multimodal analgesia (Group 2, n = 5, or preemptive analgesia consisting in oral tramadol (Group 3, n = 10. Changes over time among groups were analyzed using generalized estimating equations. Multivariate regression tested the significance of relationships between pain scales and video analysis. Video analysis identified that one orthopedic behavior, namely 'Walking with full weight bearing' of the operated leg, decreased more in Group 1 at T24 (indicative of pain, whereas three behaviors indicative of sedation decreased in Group 2 at T24 (all p<0.004. Electrodermal activity was higher in Group 1 than in Groups 2 and 3 until T1 (p<0.0003. The VAS was not responsive. 4A-VET showed divergent results as its orthopedic component (4A-VETleg detected lower pain in Group 2 until T12 (p<0.0009, but its interactive component (4A-VETbeh was increased in Group 2 from T12 to T48 (p<0.001. Concurrent validity established that 4A-VETleg scores the painful orthopedic condition accurately and that pain assessment through 4A-VETbeh and VAS was severely biased by the sedative side-effect of the analgesics. Finally, the video analysis offered a concise template for assessment in dogs with acute orthopedic pain. However, subjective pain

Modafinil reduces patient-reported tiredness after sedation/analgesia but does not improve patient psychomotor skills.

NARCIS (Netherlands)

Galvin, E.; Boesjes, H.; Hol, J.; Ubben, J.F.; Klein-Nulend, J.; Verbrugge, S.J.

2010-01-01

BACKGROUND: Early recovery of patients following sedation/analgesia and anesthesia is important in ambulatory practice. The aim of this study was to assess whether modafinil, used for the treatment of narcolepsy, improves recovery following sedation/analgesia. METHODS: Patients scheduled for

Comparison of analgesic efficacy of four-quadrant transversus abdominis plane (TAP) block and continuous posterior TAP analgesia with epidural analgesia in patients undergoing laparoscopic colorectal surgery: an open-label, randomised, non-inferiority trial.

Science.gov (United States)

Niraj, G; Kelkar, A; Hart, E; Horst, C; Malik, D; Yeow, C; Singh, B; Chaudhri, S

2014-04-01

Posterior transversus abdominis plane blocks have been reported to be an effective method of providing analgesia after lower abdominal surgery. We compared the efficacy of a novel technique of providing continuous transversus abdominis plane analgesia with epidural analgesia in patients on an enhanced recovery programme following laparoscopic colorectal surgery. A non-inferiority comparison was used. Adult patients undergoing elective laparoscopic colorectal surgery were randomly assigned to receive continuous transversus abdominis plane analgesia (n = 35) vs epidural analgesia (n = 35), in addition to a postoperative analgesic regimen comprising regular paracetamol, regular diclofenac and tramadol as required. Sixty-one patients completed the study. The transversus group received four-quadrant transversus abdominis plane blocks and bilateral posterior transversus abdominis plane catheters that were infused with levobupivacaine 0.25% for 48 h. The epidural group received an infusion of bupivacaine and fentanyl. The primary outcome measure was visual analogue scale pain score on coughing at 24 h after surgery. We found no significant difference in median (IQR [range]) visual analogue scores during coughing at 24 h between the transversus group 2.5 (1.0-3.0 [0-5.5]) and the epidural group 2.5 (1.0-5.0 [0-6.0]). The one-sided 97.5% CI was a 0.0 (∞-1.0) difference in means, establishing non-inferiority. There were no significant differences between the groups for tramadol consumption. Success rate was 28/30 (93%) in the transversus group vs 27/31 (87%) in the epidural group. Continuous transversus abdominis plane infusion was non-inferior to epidural infusion in providing analgesia after laparoscopic colorectal surgery. © 2013 The Association of Anaesthetists of Great Britain and Ireland.

Placebo and nocebo

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Luana Colloca

2009-06-01

Full Text Available Over the past two decades the placebo and nocebo effect has shifted from being a nuisance in clinical research to a promising model of an emerging neuroscience of mind-brain-body interactions. In fact, the interest in and the success of placebo research resides in its multifaceted meaning, which involves key issues in modern science - from neurobiology to philosophy, from ethics to social psychology, and from clinical trials design to medical practice. Thus, the placebo effect, which has long been neglected by the neuroscience community, is today considered a real and detectable biological phenomenon, and the question of whether placebos work has been reframed as to how they work. The aim of this review is to introduce the reader to the nature and extent of the placebo and nocebo phenomenon and to present the interesting implications of the new evidence that arises from recent research in the field of pain.

Sucrose-induced analgesia during early life modulates adulthood learning and memory formation.

Science.gov (United States)

Nuseir, Khawla Q; Alzoubi, Karem H; Alabwaini, Jehad; Khabour, Omar F; Kassab, Manal I

2015-06-01

This study is aimed at examining the long-term effects of chronic pain during early life (postnatal day 0 to 8weeks), and intervention using sucrose, on cognitive functions during adulthood in rats. Pain was induced in rat pups via needle pricks of the paws. Sucrose solution or paracetamol was administered for analgesia before the paw prick. Control groups include tactile stimulation to account for handling and touching the paws, and sucrose alone was used. All treatments were started on day one of birth and continued for 8weeks. At the end of the treatments, behavioral studies were conducted to test the spatial learning and memory using radial arm water maze (RAWM), as well as pain threshold via foot-withdrawal response to a hot plate apparatus. Additionally, the hippocampus was dissected, and blood was collected. Levels of neurotrophins (BDNF, IGF-1 and NT-3) and endorphins were assessed using ELISA. The results show that chronic noxious stimulation resulted in comparable foot-withdrawal latency between noxious and tactile groups. On the other hand, pretreatment with sucrose or paracetamol increased pain threshold significantly both in naive rats and noxiously stimulated rats (Pmemory, and sucrose treatment prevented such impairment (Pmemory impairment, and pretreatment with sucrose prevented this impairment via mechanisms that seem to involve BDNF. As evident in the results, sucrose, whether alone or in the presence of pre-noxious stimulation, increases pain threshold in such circumstances; most likely via a mechanism that involves an increase in endogenous opioids. Copyright © 2015 Elsevier Inc. All rights reserved.

Autoradiographic visualization on the role of central 3H-5-hydroxytryptamine in acupuncture analgesia

International Nuclear Information System (INIS)

Zhu Shoupeng; Shi Fuxi; Liu Zhonghao; Jiang Ji

1990-10-01

The role played by central 5-hydroxytryptamine (5-HT) in electroacupuncture analgesia has been studied in rats by means of autoradiography with isotopic tracers 3 H-5-HT. The purpose of the study is to determine the localization of 3 H-5-HT in the midbrain raphe nuclei and in the mesencephalon aquaeduct as well as periaquaeductal gray matter. Parallel experiments were studied by freezing microautoradiographic method and histo-fixative microautoradiographic method. The analgesic effect of acupuncture can be enhanced or lowered by the increment or the decrement of the 5-HT level in the midbrain raphe nuclei and in the mesencephalon aquaeduct as well as periaquaeductal gray matter. The results show that when the rats were subjected to electro-acupuncture analgesia, the microautoradiographic intensities of 3 H-5-HT both in the midbrain raphe nuclei and in the areas of mesencephalon aqueduct were significantly increased. It may be observed that the release of 5-HT in these regions of the brain is accelerated during acupuncture analgesia. From this it can be concluded that the midbrain raphe nuclei and the mesencephalon aquaeduct as well as the periaquaeductal gray matter are closely related to acupuncture analgesia. The results imply that 5-HT in these areas may be one of the most important neurochemical agents mediating acupuncture analgesia

A randomized trial of the effects of antibiotic prophylaxis on epidural-related fever in labor.

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Sharma, Shiv K; Rogers, Beverly B; Alexander, James M; McIntire, Donald D; Leveno, Kenneth J

2014-03-01

It has been suggested that the development of maternal fever during epidural analgesia could be due to intrapartum infection. We investigated whether antibiotic prophylaxis before epidural placement decreases the rate of epidural-related fever. In this double-blind, placebo-controlled trial, 400 healthy nulliparous women requesting epidural analgesia were randomly assigned to receive either cefoxitin 2 g or placebo immediately preceding initiation of epidural labor analgesia. Maternal tympanic temperature was measured hourly, and intrapartum fever was defined as a maternal temperature of ≥38°C. Neonates born to women with fever were evaluated for possible sepsis, and available placentas were evaluated for the presence of neutrophilic inflammation. The primary outcome was maternal fever during epidural analgesia. Thirty-eight percent of women in the cefoxitin group and 40% of women in the placebo group developed fever (P = 0.68). The risk difference (95% confidence interval) for fever ≥38°C during labor (antibiotic versus placebo) was -2.0% (-11.5 to 7.5), and for fever >39°C during labor was -1.5% (-4.7 to 1.7). Approximately half of each study group had placental neutrophilic inflammation, but administration of cefoxitin had no significant effect on any grade of neutrophilic inflammation. Fever developed significantly more often in the women with placental neutrophilic inflammation compared with those without such inflammation (73/158 vs 33/144, P labor epidural analgesia is associated with placental inflammation, but fever and placental inflammation were not reduced with antibiotic prophylaxis. This finding suggests that infection is unlikely to be the cause in its development.

The effects of preoperative oral administration of carprofen or tramadol on postoperative analgesia in dogs undergoing cutaneous tumor removal.

Science.gov (United States)

Karrasch, Nicole M; Lerche, Phillip; Aarnes, Turi K; Gardner, Heather L; London, Cheryl A

2015-08-01

This prospective, blinded, controlled clinical study compared the effects of pre-emptive oral administration of carprofen or tramadol on pain scores and analgesic requirement in dogs undergoing cutaneous tumor removal. Thirty-six client-owned dogs presenting for cutaneous tumor removal were randomly assigned to receive carprofen, tramadol, or no treatment prior to surgery. Pain was assessed using a visual analog scale (VAS), the Modified Glasgow Composite Measure Pain Score (MGCMPS), and algometry at enrollment, prior to premedication, at extubation, then hourly for the first 4 h, and every 4 h for 24 h. Dogs scoring ≥ 7 (MGCMPS), or having a VAS measurement ≥ 40 mm were given rescue analgesia. There were no significant differences in pain VAS, MGCMPS, or algometry. There were no differences in rescue analgesia requirement, or time to rescue analgesia among groups. Carprofen, tramadol, or no pre-emptive analgesia, combined with pre-operative hydromorphone and rescue analgesia, resulted in satisfactory analgesia in the 24-hour postoperative period.

A comparison of intrathecal dexmedetomidine verses intrathecal fentanyl with epidural bupivacaine for combined spinal epidural labor analgesia

OpenAIRE

P K Dilesh; S Eapen; S Kiran; Vivek Chopra

2014-01-01

Context: Combined spinal epidural (CSE) analgesia technique is effective for labor analgesia and various concentrations of bupivacaine and lipophilic opioids like fentanyl have been studied. Dexmedetomidine is a highly selective alpha 2 adrenoreceptor agonist with analgesic properties and has been used intrathecally with bupivacaine for prolonged postoperative analgesia. Recent reviews have shown that it is highly lipophilic and does not cross placenta significantly. Aim: The aim of this s...

Placebo - More hatred than love

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Hong-Liang Zhang

2011-01-01

Full Text Available A placebo is a sham medical intervention that can produce a placebo effect. Laboratory evidence supports the existence of several mechanisms of placebo effects in both healthy population and patients with a variety of medical conditions. The ethics of placebos have long been debated. However, accumulating ethical concern has arisen from the worldwide use of placebo in randomized control trials (RCTs, which may render their participants without early and optimal treatment. Although the pilgrimage of placebo is still on the way, refinement of controls in RCTs is worth paying new attention to.

Placebo - More hatred than love.

Science.gov (United States)

Zhang, Hong-Liang

2011-01-01

A placebo is a sham medical intervention that can produce a placebo effect. Laboratory evidence supports the existence of several mechanisms of placebo effects in both healthy population and patients with a variety of medical conditions. The ethics of placebos have long been debated. However, accumulating ethical concern has arisen from the worldwide use of placebo in randomized control trials (RCTs), which may render their participants without early and optimal treatment. Although the pilgrimage of placebo is still on the way, refinement of controls in RCTs is worth paying new attention to.

A Double-Blind, Randomised, Placebo-Controlled Trial of EMLA® Cream (Eutectic Lidocaine/Prilocaine Cream) for Analgesia Prior to Cryotherapy of Plantar Warts in Adults.

Science.gov (United States)

Lee, Siew Hui; Pakdeethai, Janthorn; Toh, Matthias P H S; Aw, Derrick C W

2014-10-01

Cryotherapy with liquid nitrogen is an effective, safe and convenient form of treatment for plantar warts. EMLA® cream (eutectic mixture of lidocaine 2.5% and prilocaine 2.5%) is a topical local anaesthetic agent that has proven to be effective and well tolerated in the relief of pain associated with various minor interventions in numerous clinical settings. In a single-centre, double-blind, randomised placebo-controlled study, 64 subjects were randomised into 2 groups. The subjects had a thick layer of EMLA® cream or placebo cream applied to pared plantar wart(s) and onto the surrounding margin of 1 mm to 2 mm under occlusion for 60 minutes prior to receiving cryotherapy. The pain of cryotherapy was evaluated by the subjects using a self-administered Visual Analogue Scale (VAS) immediately after the cryotherapy. There was no statistical difference between the mean VAS score for EMLA® cream (47.0 ± 21.4 mm) and placebo (48.9 ± 22.0 mm). Those with more than 1 wart had a significantly higher VAS score than those with only 1 wart (59.1 ± 21.8 vs. 44.3 ± 20.4, P cryotherapy. We conclude that the application of EMLA® cream prior to cryotherapy does not reduce the pain associated with cryotherapy.

External cephalic version for breech presentation with or without spinal analgesia in nulliparous women at term: a randomized controlled trial.

Science.gov (United States)

Weiniger, Carolyn F; Ginosar, Yehuda; Elchalal, Uriel; Sharon, Einav; Nokrian, Malka; Ezra, Yossef

2007-12-01

To compare the success of external cephalic version using spinal analgesia with no analgesia among nulliparas. A prospective randomized controlled trial was performed in a tertiary referral center delivery suite. Nulliparous women at term requesting external cephalic version for breech presentation were randomized to receive spinal analgesia (7.5 mg bupivacaine) or no analgesia before the external cephalic version. An experienced obstetrician performed the external cephalic version. Primary outcome was successful conversion to vertex presentation. Seventy-four women were enrolled, and 70 analyzed (36 spinal, 34 no analgesia). Successful external cephalic version occurred among 24 of 36 (66.7%) women randomized to receive spinal analgesia compared with 11 of 34 (32.4%) without, P=.004 (95% confidence interval [CI] of the difference: 0.0954-0.5513). External cephalic version with spinal analgesia resulted in a lower visual analog pain score, 1.76+/-2.74 compared with 6.84+/-3.08 without, Pexternal cephalic version success was 4.0-fold higher when performed with spinal analgesia P=.02 (95% CI, odds ratio [OR] 1.2-12.9). Complete breech presentation before attempting external cephalic version increased the odds of success 8.2-fold, P=.001 (95% CI, OR 2.2-30.3). Placental position, estimated fetal weight, and maternal weight did not contribute to the success rate when spinal analgesia was used. There were no cases of placental abruption or fetal distress. Administration of spinal analgesia significantly increases the success rate of external cephalic version among nulliparous women at term, which allows possible normal vaginal delivery. ClinicalTrials.gov, www.clinicaltrials.gov, NCT00119184 I.

Randomized placebo-controlled trial of sucrose analgesia on neonatal skin blood flow and pain response during heel lance.

Science.gov (United States)

Tutag Lehr, Victoria; Cortez, Josef; Grever, William; Cepeda, Eugene; Thomas, Ron; Aranda, Jacob V

2015-05-01

To evaluate the effect of oral sucrose on skin blood flow (SBF; perfusion units; PU) measured by Laser Doppler Imager (LDI) in term newborns and pain response (Neonatal Infant Pain Scale score; NIPS score) during heel lance; (2) determine SBF changes during heel lance; and (3) the relationship between SBF and NIPS. Term infants ≤7 days old (n=56) undergoing routine heel lance were randomized to pretreatment with 2.0 mL oral 24% sucrose (n=29) or sterile water (n=27) in a double-blinded, placebo-controlled trial. SBF was assessed by LDI scans and NIPS scores at 10 minutes before lance, immediately after lancing, and 5 minutes after blood extraction. Mean SBF and median NIPS scores were compared between groups using General Linear Model or Kruskal-Wallis. Regressions examined the relationship between SBF immediately after heel lance and NIPS score. Mean SBF and median NIPS scores immediately after heel lance were lower in sucrose-treated infants (167.9±15.5 vs. 205.4±16.0 PU, P=0.09; NIPS 1 [interquartile range 0 to 4] vs. NIPS 3 [interquartile range 0 to 6], P=0.02), although no significant difference in mean SBF. During heel lance NIPS score was predictive of SBF. An increase of 1 in NIPS score was associated with 11 PU increase in SBF (R=0.21; P=0.09) for sucrose, and 16 PU increase for placebo-treated infants (R=0.20; P=0.014). Increased SBF assessed by LDI is a pain response among term neonates after routine heel lance, which was not completely attenuated by oral sucrose administration. Increased SBF is associated with NIPS scores. Sucrose analgesic efficacy evidenced by decreased NIPS scores for the sucrose group. Association of SBF with NIPS scores suggests that LDI is potentially useful for assessing newborn procedural pain.

Combined epidural-spinal opioid-free anaesthesia and analgesia for hysterectomy

DEFF Research Database (Denmark)

Callesen, T; Schouenborg, Lars Øland; Nielsen, D

1999-01-01

Postoperative nausea and vomiting (PONV) are major problems after gynaecological surgery. We studied 40 patients undergoing total abdominal hysterectomy, allocated randomly to receive opioid-free epidural-spinal anaesthesia or general anaesthesia with continuous epidural bupivacaine 15 mg h-1...... or continuous bupivacaine 10 mg h-1 with epidural morphine 0.2 mg h-1, respectively, for postoperative analgesia. Nausea, vomiting, pain and bowel function were scored on 4-point scales for 3 days. Patients undergoing general anaesthesia had significantly higher nausea and vomiting scores (P ... for hysterectomy caused less PONV, but with less effective analgesia compared with general anaesthesia with postoperative continuous epidural morphine and bupivacaine....

Placebo can enhance creativity.

Directory of Open Access Journals (Sweden)

Liron Rozenkrantz

Full Text Available The placebo effect is usually studied in clinical settings for decreasing negative symptoms such as pain, depression and anxiety. There is interest in exploring the placebo effect also outside the clinic, for enhancing positive aspects of performance or cognition. Several studies indicate that placebo can enhance cognitive abilities including memory, implicit learning and general knowledge. Here, we ask whether placebo can enhance creativity, an important aspect of human cognition.Subjects were randomly assigned to a control group who smelled and rated an odorant (n = 45, and a placebo group who were treated identically but were also told that the odorant increases creativity and reduces inhibitions (n = 45. Subjects completed a recently developed automated test for creativity, the creative foraging game (CFG, and a randomly chosen subset (n = 57 also completed two manual standardized creativity tests, the alternate uses test (AUT and the Torrance test (TTCT. In all three tests, participants were asked to create as many original solutions and were scored for originality, flexibility and fluency.The placebo group showed higher originality than the control group both in the CFG (p<0.04, effect size = 0.5 and in the AUT (p<0.05, effect size = 0.4, but not in the Torrance test. The placebo group also found more shapes outside of the standard categories found by a set of 100 CFG players in a previous study, a feature termed out-of-the-boxness (p<0.01, effect size = 0.6.The findings indicate that placebo can enhance the originality aspect of creativity. This strengthens the view that placebo can be used not only to reduce negative clinical symptoms, but also to enhance positive aspects of cognition. Furthermore, we find that the impact of placebo on creativity can be tested by CFG, which can quantify multiple aspects of creative search without need for manual coding. This approach opens the way to explore the behavioral and neural mechanisms by which

Placebo can enhance creativity.

Science.gov (United States)

Rozenkrantz, Liron; Mayo, Avraham E; Ilan, Tomer; Hart, Yuval; Noy, Lior; Alon, Uri

2017-01-01

The placebo effect is usually studied in clinical settings for decreasing negative symptoms such as pain, depression and anxiety. There is interest in exploring the placebo effect also outside the clinic, for enhancing positive aspects of performance or cognition. Several studies indicate that placebo can enhance cognitive abilities including memory, implicit learning and general knowledge. Here, we ask whether placebo can enhance creativity, an important aspect of human cognition. Subjects were randomly assigned to a control group who smelled and rated an odorant (n = 45), and a placebo group who were treated identically but were also told that the odorant increases creativity and reduces inhibitions (n = 45). Subjects completed a recently developed automated test for creativity, the creative foraging game (CFG), and a randomly chosen subset (n = 57) also completed two manual standardized creativity tests, the alternate uses test (AUT) and the Torrance test (TTCT). In all three tests, participants were asked to create as many original solutions and were scored for originality, flexibility and fluency. The placebo group showed higher originality than the control group both in the CFG (pcreativity. This strengthens the view that placebo can be used not only to reduce negative clinical symptoms, but also to enhance positive aspects of cognition. Furthermore, we find that the impact of placebo on creativity can be tested by CFG, which can quantify multiple aspects of creative search without need for manual coding. This approach opens the way to explore the behavioral and neural mechanisms by which placebo might amplify creativity.

Effects of Flurbiprofen Axetil on Postoperative Analgesia and Cytokines in Peripheral Blood of Thoracotomy Patients.

Science.gov (United States)

Zhou, Mi; Li, Beiping; Kong, Ming

2015-06-01

The objective is to study the effects of flurbiprofen axetil (FA) with fentanyl together in postoperative controlled intravenous analgesia (PCIA) on pain intensity, cytokine levels in peripheral blood and adverse reactions of thoracotomy patients. Fifty thoracotomy patients were divided into a FA and a control group, each with 25 cases. Postoperative analgesia was administered in the two groups using PCIA. The pressing times of analgesia pump, the visual analog scale (VAS) scores during resting and coughing at 2, 6, 24, 48, 72 h after surgery and the incidence of adverse drug reactions were recorded. Levels of IL-1β, IL-6, IL-8, IL-2, and TNF-α in peripheral blood were determined before the administration of FA (T0), and at 24 h (T1), 48 h (T2), 72 h (T3) after surgery. The analgesia pump pressing times in the FA group was less than that of the control group. The VAS scores during resting and coughing at 2, 6, 24, 48, 72 h after surgery, were statistically less than those of control group. The incidence rate of nausea and vomiting was insignificantly different between the two groups. Administration of FA together with PCIA in thoracotomy patients can improve postoperative analgesia.

Spinal cellular and network properties modulate pain perception

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Darbon Pascal

2016-01-01

Previously, it has been shown that high levels of plasma glucocorticoids give rise to analgesia. However to our knowledge nothing has been reported regarding a direct non genomic modulation of neuronal spinal activity by peripheral CORT. In the present study, we used combined in vivo and in vitro electrophysiology approaches, associated with the measure of nociceptive mechanical sensitivity and plasma corticosterone level measurement to assess the impact of circulating CORT on rat nociception. We showed that CORT plasma level elevation produced analgesia via the reduction of nociceptive fiber mediated spinal responses. CORT is spinally reduced in the neuroactive metabolite THDOC that specifically enhances lamina II GABAergic synaptic transmission. The main consequence is a reduction of lamina II network excitability reflecting a selective decrease in processing of nociceptive inputs. The depressed neuronal activity at the spinal level then in turn leads to a weaker nociceptive message transmission to supraspinal structures and hence to an alleviation of pain.

Extending labor epidural analgesia using lidocaine plus either dexmedetomidine or epinephrine for emergency cesarean section

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Riham Hasanein

2016-07-01

Conclusion: Epidural dexmedetomidine is comparable to epinephrine as an adjuvant to epidural lidocaine in fastening the onset of surgical anesthesia and resulted in better intraoperative analgesia and in longer duration of sensory and motor block in the settings of converting labor epidural analgesia for emergency CS.

Impact of epidural analgesia on cesarean and operative vaginal delivery rates classified by the Ten Groups Classification System.

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Lucovnik, M; Blajic, I; Verdenik, I; Mirkovic, T; Stopar Pintaric, T

2018-05-01

The Ten Group Classification System (TGCS) allows critical analysis according to the obstetric characteristics of women in labor: singleton or multiple pregnancy, nulliparous, multiparous, or multiparous with a previous cesarean delivery, cephalic, breech presentation or other malpresentation, spontaneous or induced labor, and term or preterm births. Labor outcomes associated with epidural analgesia may be different among the different labor classification groups. The aim of this study was to explore associations between epidural analgesia and cesarean delivery, and epidural analgesia and assisted vaginal delivery, in women classified using the TGCS. Slovenian National Perinatal Information System data for the period 2007-2014 were analyzed. All women after spontaneous onset or induction of labor were classified according to the TGCS, within which cesarean and vaginal assisted delivery rates were investigated (P cesarean delivery rates. Women in group 1 (nulliparous term women with singleton fetuses in cephalic presentation in spontaneous labor) with epidural analgesia had a higher cesarean delivery rate. In most TGCS groups women with epidural analgesia had higher assisted vaginal delivery rates. Epidural analgesia is associated with different effects on cesarean delivery and assisted vaginal delivery rates in different TGCS groups. Copyright © 2018. Published by Elsevier Ltd.

[Effect of nonsteroidal anti-inflammatory drugs and paracetamol on hemodynamic changes during postoperative analgesia in children].

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Leont'ev, D V; Babaev, B D; Shishkov, M V; Ostreĭkov, I F

2005-01-01

The purpose of the present study was to comparatively assess the adequacy of postoperative analgesia using nonsteroidal anti-inflammatory drugs (NSAIDs) and paracetamol in children undergone "minor" surgical interventions. For postoperative analgesia in children, the authors used paracetamol in a single dose of 25-30 mg/kg, diclofenac in a dose of 1.5-2.0 mg/kg, which were rectally administered as suppositories, as well as diclofenac in the same dose as intramuscular injections (Group 1). A comparison was made with postoperative analgesia using analgin and promedole (Group 2 (control)). Group 1 comprised 63 patients and Group 2 included 26 patients with identical diseases (inguinal hernias, varicocele, phimosis). Functional parameters were recorded in patients in the lying position before, 30 min, 1, 2, and 3 hours after surgery. The efficiency of postoperative analgesia was evaluated, by using central hemodynamic parameters that many investigators consider to be one of the major criteria for the adequacy of anesthesia. Comparison of postoperative data has revealed a difference between the groups, which suggests that the use of NSAIDs and paracetamol for preventive and postoperative analgesia in children substantially improves the postoperative period and promotes a rapid rehabilitation in patients. Comparative analysis of the efficiency of postoperative analgesia of the above agents has indicated that diclofenac and paracetamol have a sufficient analgesic activity and at the same time do not show the adverse reactions unique to narcotic analgesics.

ENDOGENOUS ANALGESIA, DEPENDENCE, AND LATENT PAIN SENSITIZATION

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Taylor, Bradley K; Corder, Gregory

2015-01-01

Endogenous activation of μ-opioid receptors (MORs) provides relief from acute pain. Recent studies have established that tissue inflammation produces latent pain sensitization (LS) that is masked by spinal MOR signaling for months, even after complete recovery from injury and re-establishment of normal pain thresholds. Disruption with MOR inverse agonists reinstates pain and precipitates cellular, somatic and aversive signs of physical withdrawal; this phenomenon requires N-methyl-D-aspartate receptor-mediated activation of calcium-sensitive adenylyl cyclase type 1 (AC1). In this review, we present a new conceptual model of the transition from acute to chronic pain, based on the delicate balance between LS and endogenous analgesia that develops after painful tissue injury. First, injury activates pain pathways. Second, the spinal cord establishes MOR constitutive activity (MORCA) as it attempts to control pain. Third, over time, the body becomes dependent on MORCA, which paradoxically sensitizes pain pathways. Stress or injury escalates opposing inhibitory and excitatory influences on nociceptive processing as a pathological consequence of increased endogenous opioid tone. Pain begets MORCA begets pain vulnerability in a vicious cycle. The final result is a silent insidious state characterized by the escalation of two opposing excitatory and inhibitory influences on pain transmission: LS mediated by AC1 (which maintains accelerator), and pain inhibition mediated by MORCA (which maintains the brake). This raises the prospect that opposing homeostatic interactions between MORCA analgesia and latent NMDAR–AC1-mediated pain sensitization create a lasting vulnerability to develop chronic pain. Thus, chronic pain syndromes may result from a failure in constitutive signaling of spinal MORs and a loss of endogenous analgesic control. An overarching long-term therapeutic goal of future research is to alleviate chronic pain by either: a) facilitating endogenous opioid

Four quadrant transversus abdominis plane block and continuous transversus abdominis plane analgesia: a 3-year prospective audit in 124 patients.

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Niraj, G; Kelkar, Aditi; Hart, Elaine; Kaushik, Vipul; Fleet, Danny; Jameson, John

2015-11-01

Transversus abdominis plane (TAP) blocks have been reported to be an effective method of providing analgesia after abdominal surgery. To perform a prospective audit on the effectiveness of a novel technique of providing continuous transversus abdominis plane (TAP) analgesia in patients undergoing emergency and elective abdominal surgery. Prospective single center audit over a 3-year period. University hospital. One hundred twenty-four American Society of Anesthesiologists I to IV adult patients presenting for elective as well as emergency abdominal surgery in whom epidural analgesia was contraindicated or refused. Four quadrant TAP blocks and continuous TAP analgesia. Numerical rating scale pain scores at rest and on coughing, nausea scores, satisfaction scores, complications, frequency of analgesia failure, therapeutic failure with continuous TAP analgesia and opioid consumption. One hundred twenty-four patients who received continuous TAP analgesia were audited. This included 34 patients for elective open surgery, 36 patients for emergency laparotomy, and 54 patients who underwent elective laparoscopic colorectal surgery. Surgical incision was within the dermatomal limit of the block in 70% of the patients (88/124). Therapeutic failure with the technique was 10%. Frequency of analgesic failure over the 48-hour period was none in 39% and below 5 episodes in 57%. Four quadrant transversus abdominis plane blocks and continuous TAP analgesia is an effective technique for providing postoperative analgesia after abdominal surgery. It has the potential to be used as a sole analgesic technique when the surgical incision is within its dermatomal limit. Copyright © 2015 Elsevier Inc. All rights reserved.

Efeito preemptivo da morfina por via venosa na analgesia pós-operatória e na resposta ao trauma cirúrgico Efecto preemptivo de la morfina por vía venosa en la analgesia pós-operatoria y en la respuesta al trauma quirúrgico The effect of preemptive intravenous morphine on postoperative analgesia and surgical stress response

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Levent Kiliçkan

2001-12-01

of preemptive analgesia and both analgesic consumption and surgical stress response are limited. The purpose of this study was to evaluate the effect of preemptive intravenous morphine on both postoperative analgesic consumption and surgical stress response. METHODS: Sixty patients, ASA lor II, aged 20-60, undergoing total abdominal hysterectomy plus bilateral salphingo-opherectomy were randomly assigned to three groups of 20 patients. Group I (n = 20 received 0.15 mg.kg-1 of morphine following induction and placebo saline during peritoneal closure. Group II (n = 20 received placebo saline following induction and 0.15 mg.kg-1 of morphine during peritoneal closure. Group III (n = 20 received placebo salin, both during induction and peritoneal closure. Blood cortisol, glucose levels and leukocyte count were measured in the pre and postoperative period. RESULTS: Postoperative total morphine consumption was significantly lower in group I compared with group III (p < 0.001. In all groups, plasma cortisol levels increased significantly within 4 h of surgery as compared to pre-op values (p < 0.001. Plasma glucose levels also increased significantly in all groups of the postoperative at 30 minutes and 8 hours period (p < 0.001. Postoperative leukocytosis was observed in all groups and the leukocyte count was significantly greater during the postoperative period than preoperative values (p < 0.001. CONCLUSIONS: Preemptive intravenous morphine 0.15 mg.kg-1 has decreased total morphine consumption but has failed to supress the surgical stress response.

Audit of a ward-based patient-controlled epidural analgesia service in Ireland.

LENUS (Irish Health Repository)

Tan, T

2012-02-01

BACKGROUND: Ward-based patient-controlled epidural analgesia (PCEA) for postoperative pain control was introduced at our institution in 2006. We audited the efficacy and safety of ward-based PCEA from January 2006 to December 2008. METHOD: Data were collected from 928 patients who received PCEA in general surgical wards for postoperative analgesia using bupivacaine 0.125% with fentanyl 2 mug\\/mL. RESULTS: On the first postoperative day, the median visual analogue pain score was 2 at rest and 4 on activity. Hypotension occurred in 21 (2.2%) patients, excessive motor blockade in 16 (1.7%), high block in 5 (0.5%), nausea in 5 (0.5%) and pruritus in only 1 patient. Excessive sedation occurred in two (0.2%) patients but no intervention was required. There were no serious complications such as epidural abscess, infection or haematoma. CONCLUSION: Effective and safe postoperative analgesia can be provided with PCEA in a general surgical ward without recourse to high-dependency supervision.

Neuraxial labor analgesia for vaginal delivery and its effects on childhood learning disabilities.

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Flick, Randall P; Lee, Kunmoo; Hofer, Ryan E; Beinborn, Charles W; Hambel, Ellen M; Klein, Melissa K; Gunn, Paul W; Wilder, Robert T; Katusic, Slavica K; Schroeder, Darrell R; Warner, David O; Sprung, Juraj

2011-06-01

In prior work, children born to mothers who received neuraxial anesthesia for cesarean delivery had a lower incidence of subsequent learning disabilities compared with vaginal delivery. The authors speculated that neuraxial anesthesia may reduce stress responses to delivery, which could affect subsequent neurodevelopmental outcomes. To further explore this possibility, we examined the association between the use of neuraxial labor analgesia and development of childhood learning disabilities in a population-based birth cohort of children delivered vaginally. The educational and medical records of all children born to mothers residing in the area of 5 townships of Olmsted County, Minnesota from 1976 to 1982 and remaining in the community at age 5 years were reviewed to identify those with learning disabilities. Cox proportional hazards regression was used to compare the incidence of learning disabilities between children delivered vaginally with and without neuraxial labor analgesia, including analyses adjusted for factors of either potential clinical relevance or that differed between the 2 groups in univariate analysis. Of the study cohort, 4684 mothers delivered children vaginally, with 1495 receiving neuraxial labor analgesia. The presence of childhood learning disabilities in the cohort was not associated with use of labor neuraxial analgesia (adjusted hazard ratio, 1.05; 95%confidence interval, 0.85-1.31; P = 0.63). The use of neuraxial analgesia during labor and vaginal delivery was not independently associated with learning disabilities diagnosed before age 19 years. Future studies are needed to evaluate potential mechanisms of the previous finding indicating that the incidence of learning disabilities is lower in children born to mothers via cesarean delivery under neuraxial anesthesia compared with vaginal delivery.

Postoperative Paraplegia as a Result of Undiagnosed Primitive Neuroectodermal Tumor, Not Epidural Analgesia

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Pei-Ching Hung

2007-10-01

Full Text Available Postoperative paraplegia is a rare complication after epidural analgesia and often occurs with spinal hematoma or cord injury. We present the case of a 16-year-old girl who suffered from a tumor mass in the neck and abdomen who underwent gynecologic operation. Preoperatively, liver metastasis was found by computed tomography. Pathologic findings revealed that the abdominal mass was an ovarian dermoid cyst. After the operation, the patient complained of paraplegia while receiving epidural analgesia for postoperative pain control. A peripheral primitive neuroectodermal tumor in the thoracic and lumbar spines with spinal cord compression was later detected using magnetic resonance imaging. Learning from this case, we suggest that when a patient is preoperatively diagnosed with tumor metastasis, back pain and soreness, spinal cord compression from tumor metastasis should be excluded before epidural analgesia is implemented.

Prospective, randomized, controlled trial of thoracic epidural or patient-controlled opiate analgesia on perioperative quality of life.

LENUS (Irish Health Repository)

Ali, M

2010-03-01

Perioperative epidural analgesia provides continuous pain control and may have advantages over parenteral opiate administration. This study assessed the impact of epidural analgesia on quality of life (QOL) of patients undergoing major surgery.

A comparison of intrathecal dexmedetomidine verses intrathecal fentanyl with epidural bupivacaine for combined spinal epidural labor analgesia

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P K Dilesh

2014-01-01

Conclusion: 10 μg dexmedetomidine intrathecally provides a longer duration of analgesia with lesser incidence of pruritus compared to 20 μg fentanyl intrathecally for CSE labor analgesia with comparable neonatal side-effects.

The anticonvulsant levetiracetam for the treatment of pain in polyneuropathy: A randomized, placebo-controlled, cross-over trial

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Holbech, Jakob Vormstrup; Otto, Marit; Bach, Flemming W

2011-01-01

of this study was to test the analgesic effect of levetiracetam in painful polyneuropathy. METHODS: This was a randomized, double-blind, placebo-controlled, cross-over trial with levetiracetam 3000mg/day versus placebo (6-week treatment periods). Patients with diagnosed polyneuropathy and symptoms for more than......-three patients were screened for participation and 39 patients entered the study. Thirty-five patients were included in the data analysis. There were no differences in the ratings of pain relief (levetiracetam 2.29 versus placebo 2.28, p=0.979), total pain intensity (levetiracetam 5.5 versus placebo 5.3, p=0......Levetiracetam is an anticonvulsant which is assumed to act by modulating neurotransmitter release via binding to the vesicle protein SV2A. This could have an impact on signaling in the nociceptive system, and a pilot study indicated relief of neuropathic pain with levetiracetam. OBJECTIVES: The aim...

ambulation during labor with combined spinal-epidural analgesia

African Journals Online (AJOL)

Adele

cations including aphasia, dysphagia, altered level of consciousness, high sensory block, respiratory depression, and respiratory arrest, following induction of CSEA for labor pain. Conclusion. In summary, the CSEA technique for ambulatory analgesia in labor has a good record of efficacy and safety and can be ac-.

Spinal cord distribution of sup 3 H-morphine after intrathecal administration: Relationship to analgesia

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Nishio, Y.; Sinatra, R.S.; Kitahata, L.M.; Collins, J.G. (Yale Univ. School of Medicine, CT (USA))

1989-09-01

The distribution of intrathecally administered {sup 3}H-morphine was examined by light microscopic autoradiography in rat spinal cord and temporal changes in silver grain localization were compared with results obtained from simultaneous measurements of analgesia. After tissue processing, radio-activity was found to have penetrated in superficial as well as in deeper layers (Rexed lamina V, VII, and X) of rat spinal cord within minutes after application. Silver grain density reached maximal values at 30 min in every region of cord studied. Radioactivity decreased rapidly between 30 min and 2 hr and then more slowly over the next 24 hr. In rats tested for responses to a thermal stimulus (tail flick test), intrathecal administration of morphine (5 and 15 micrograms) resulted in significant dose dependent analgesia that peaked at 30 min and lasted up to 5 hr (P less than 0.5). There was a close relationship between analgesia and spinal cord silver grain density during the first 4 hr of the study. It is postulated that the onset of spinal morphine analgesia depends on appearance of molecules at sites of action followed by the activation of anti-nociceptive mechanisms.

Efficacy of trans abdominis plane block for post cesarean delivery analgesia: A double-blind, randomized trial

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Uma Srivastava

2015-01-01

Full Text Available Background: The transverse abdominis plane (TAP block, a regional block provides effective analgesia after lower abdominal surgeries if used as part of multimodal analgesia. In this prospective, randomized double-blind study, we determined the efficacy of TAP block in patients undergoing cesarean section. Materials and Methods: Totally, 62 parturients undergoing cesarean section were randomized in a double-blind manner to receive either bilateral TAP block at the end of surgery with 20 ml of 0.25% bupivacaine or no TAP block, in addition to standard analgesic comprising 75 mg diclofenac 8 hourly and intravenous patient-controlled analgesia (PCA tramadol. Each patient was assessed at 0, 4, 8, 12, 24, 36, and 48 h after surgery by an independent observer for pain at rest and on movement using numeric rating scale of 0-10, time of 1 st demand for tramadol, total consumption of PCA tramadol, satisfaction with pain management and side effects. Results: Use of tramadol was reduced in patients given TAP block by 50% compared to patients given no block during 48 h after surgery (P < 0.001. Pain scores were lower both on rest and activity at each time point for 24 h in study group (P < 0.001, time of first analgesia was significantly longer, satisfaction was higher, and side effects were less in study group compared to control group. Conclusion: Transverse abdominis plane block was effective in providing analgesia with a substantial reduction in tramadol use during 48 h after cesarean section when used as adjunctive to standard analgesia.

Epidural analgesia during labour, routinely or on request: a cost-effectiveness analysis.

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Bonouvrié, Kimberley; van den Bosch, Anouk; Roumen, Frans J M E; van Kuijk, Sander M; Nijhuis, Jan G; Evers, Silvia M A A; Wassen, Martine M L H

2016-12-01

To assess the cost-effectiveness of routine labour epidural analgesia (EA), from a societal perspective, as compared with labour analgesia on request. Women delivering of a singleton in cephalic presentation beyond 36+0 weeks' gestation were randomly allocated to routine labour EA or analgesia on request in one university and one non-university teaching hospital in the Netherlands. Costs included all medical, non-medical and indirect costs from randomisation to 6 weeks postpartum. Effectiveness was defined as a non-operative, spontaneous vaginal delivery without EA-related maternal adverse effects. Incremental cost-effectiveness ratio (ICER) was defined as the ratio of the difference in costs and the difference in effectiveness between both groups. Data were analysed according to intention to treat and divided into a base case analysis and a sensitivity analysis. Total delivery costs in the routine EA group (n=233) were higher than in the labour on request group (n=255) (difference -€ 322, 95% CI -€ 60 to € 355) due to more medication costs (including EA), a longer stay in the labour ward, and more operations including caesarean sections. Total postpartum hospital costs in the routine EA group were lower (difference -€ 344, 95% CI -€ 1338 to € 621) mainly due to less neonatal admissions (difference -€ 472, 95% CI -€ 1297 to € 331), whereas total postpartum home and others costs were comparable (difference -€ 20, 95% CI -€ 267 to € 248, and -€ 1, 95% CI -€ 67 to € 284, respectively). As a result, the overall mean costs per woman were comparable between the routine EA group and the analgesia on request group (€ 8.708 and € 8.710, respectively, mean difference -€ 2, 95% CI -€ 1.012 to € 916). Routine labour EA resulted in more deliveries with maternal adverse effects, nevertheless the ICER remained low (€ 8; bootstrap 95% CI -€ 6.120 to € 8.659). The cost-effectiveness acceptability curve indicated a low probability that

Comparison of carprofen and tramadol for postoperative analgesia in dogs undergoing enucleation.

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Delgado, Cherlene; Bentley, Ellison; Hetzel, Scott; Smith, Lesley J

2014-12-15

To compare analgesia provided by carprofen and tramadol in dogs after enucleation. Randomized, masked clinical trial. 43 dogs. Client-owned dogs admitted for routine enucleation were randomly assigned to receive either carprofen or tramadol orally 2 hours prior to surgery and 12 hours after the first dose. Dogs were scored for signs of pain at baseline (ie, before carprofen or tramadol administration) and at 0.25, 0.5, 1, 2, 4, 6, 8, 24, and 30 hours after extubation. Dogs received identical premedication and inhalation anesthesia regimens, including premedication with hydromorphone. If the total pain score was ≥ 9 (maximum possible score of 20), there was a score ≥ 3 in any of 5 behavioral categories (highest score possible per category was 3 or 4), or the visual analog scale (VAS) score was ≥ 35 (maximum possible score of 100) combined with a palpation score > 0, rescue analgesia (hydromorphone) was administered and treatment failure was recorded. No differences were found in age, sex, or baseline pain scores between groups. Significantly more dogs receiving tramadol required rescue analgesia (6/21), compared with dogs receiving carprofen (1/22). Pain and VAS scores decreased linearly over time. No significant differences were found in pain or VAS scores between groups at any time point (dogs were excluded from analysis after rescue). Results of this study suggested that carprofen, with opioid premedication, may provide more effective postoperative analgesia than tramadol in dogs undergoing enucleation.

Comparing etoricoxib and celecoxib for preemptive analgesia for acute postoperative pain in patients undergoing arthroscopic anterior cruciate ligament reconstruction: a randomized controlled trial

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Glabglay Prapakorn

2010-10-01

Etoricoxib is more effective than celecoxib and placebo for using as preemptive analgesia for acute postoperative pain control in patients underwent arthroscopic anterior cruciate ligament reconstruction. Trial registration number NCT01017380

Nothingness and the placebo effect phenomenon

DEFF Research Database (Denmark)

Jensen, Tine

The placebo effect is a pharmacological conundrum, since it is a medical effect that is produced by “nothing” because no pharmacologically active substance is present in placebo. Placebo has, among other things, been defined as an inert substance, often a calcium pill. Simultaneously it presents...... a posthuman angle, applying Karen Barad’s concept of agential realism to tackle the issue of nothingness. I argue that the placebo effect produces specific agencies in the placebo effect phenomenon – that is, both the subject under treatment and the placebo emerge in the placebo effect in the act of measuring it...

Ketamina en analgesia multimodal postcesarea

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Monzón Rubio, Eva María

2011-01-01

Mediante la analgesia multimodal influimos en las diferentes vías del dolor a la vez que minimizamos los potenciales efectos adversos de los diferentes fármacos administrados. En el caso del dolor postcesárea esto adquiere un importante matiz debido a la necesidad de disminuir el uso de opioides que pasan a la leche materna en caso de lactancia natural. El uso de dosis subanestésicas de Ketamina ha demostrado en diferentes estudios la disminución de requerimientos de opioides en las primer...

Positive allosteric modulation of GABA-A receptors reduces capsaicin-induced primary and secondary hypersensitivity in rats

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Hansen, Rikke Rie; Erichsen, Helle K; Brown, David T

2012-01-01

GABA-A receptor positive allosteric modulators (PAMs) mediate robust analgesia in animal models of pathological pain, in part via enhancing injury-induced loss of GABA-A-α2 and -α3 receptor function within the spinal cord. As yet, a lack of clinically suitable tool compounds has prevented this co...

Effects of epidural lidocaine analgesia on labor and delivery: A randomized, prospective, controlled trial

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Nafisi Shahram

2006-12-01

Full Text Available Abstract Background Whether epidural analgesia for labor prolongs the active-first and second labor stages and increases the risk of vacuum-assisted delivery is a controversial topic. Our study was conducted to answer the question: does lumbar epidural analgesia with lidocaine affect the progress of labor in our obstetric population? Method 395 healthy, nulliparous women, at term, presented in spontaneous labor with a singleton vertex presentation. These patients were randomized to receive analgesia either, epidural with bolus doses of 1% lidocaine or intravenous, with meperidine 25 to 50 mg when their cervix was dilated to 4 centimeters. The duration of the active-first and second stages of labor and the neonatal apgar scores were recorded, in each patient. The total number of vacuum-assisted and cesarean deliveries were also measured. Results 197 women were randomized to the epidural group. 198 women were randomized to the single-dose intravenous meperidine group. There was no statistical difference in rates of vacuum-assisted delivery rate. Cesarean deliveries, as a consequence of fetal bradycardia or dystocia, did not differ significantly between the groups. Differences in the duration of the active-first and the second stages of labor were not statistically significant. The number of newborns with 1-min and 5-min Apgar scores less than 7, did not differ significantly between both analgesia groups. Conclusion Epidural analgesia with 1% lidocaine does not prolong the active-first and second stages of labor and does not increase vacuum-assisted or cesarean delivery rate.

Epidural analgesia during labor: impact on delivery outcome, neonatal well-being, and early breastfeeding.

Science.gov (United States)

Gizzo, Salvatore; Di Gangi, Stefania; Saccardi, Carlo; Patrelli, Tito Silvio; Paccagnella, Gianluca; Sansone, Laura; Barbara, Favaron; D'Antona, Donato; Nardelli, Giovanni Battista

2012-08-01

The effect of epidural analgesia on labor and effective breastfeeding is still being debated. The aim of this study is to define its impact on the trend of labor, the newborns' well-being, and early breastfeeding. We considered first-term physiologic pregnant women who delivered by the vaginal route. We divided them into two groups: group A received epidural analgesia during labor, whereas group B received no analgesia. We recorded maternal age, gestational age, modality of delivery, length of labor, and length of active labor. All newborns received skin-to-skin contact; early breastfeeding was encouraged. We recorded data on birth weight and length, Apgar score at minutes 1 and 5, type of crying, neonatal reactivity, and time between birth and exposure to the breast. Statistical significance was considered for panalgesia, and 245 patients agreed to participate in our study. Only 128 patients met inclusion criteria. We randomized them in 64 women in group A and 64 women in group B. Data on maternal age, gestational age, type of delivery, neonatal birth weight and length, and Apgar score showed no significant differences. Total length of labor was 363.58±62.20 minutes in Group A versus 292.30±64.75 minutes in group B (pneonatal parameters we found a statistically significant difference only for length of first breastfeeding, with a mean duration of analgesia has little effect on trend of labor and duration of first breastfeed and none on neonatal outcome. A new protocol of epidural analgesia may solve these side effects.

Are there any strategies to improve neonatal outcomes associated with epidural analgesia in labor?

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Armani, Marta; Gaggiano, Carla; Dallaglio, Sara; Romanini, Enzo; Sospiri, Carmen; Magnani, Cinzia

2013-09-01

This study was aimed at evaluating the relationship between epidural analgesia and perinatal outcomes and at verifying the advisability of procedural changes in assistance to labor. From January to December 2012, we conducted a retrospective case-control study on 1,963 laboring pregnant women admitted to the Parma University Hospital. We considered two groups: Group 1 received epidural analgesia and Group 2 received no analgesia. Women with elective cesarean sections, multiple pregnancies or deliveries at <34 weeks were excluded. We recorded maternal data (age, type of delivery, obstetric procedures, premature rupture of membranes, screenings for Group-B Streptococcus) and neonatal data (birth weight, gestational age, 1- and 5-minute Apgar scores, diagnosis at discharge). Of the 1,963 laboring women, 287 requested analgesia and 1,676 did not. We found no significant differences between the two groups in the rates of cesarean section, clavicle fracture, and 1-minute Apgar score between 4 and 7. By contrast, we observed a higher rate of instrumental deliveries (p<0.01), fetal occiput posterior position (p<0.05), neonatal cephalohematoma (p=0.01) in Group 1 than in Group 2 . In Group 1 we also found a higher number of newborns with 1-minute Apgar score of 3 or less (p=0.016). In addition, a significantly higher number of women in Group 1 had fever during labor (p=0.003, odds ratio 5.01). Our results suggest that strategies should be activated to overcome or limit the side-effects of analgesia in labor through prospective and multidisciplinary studies. 

Evaluation of Pain Assessment Techniques and Analgesia Efficacy in a Female Guinea Pig (Cavia porcellus) Model of Surgical Pain

Science.gov (United States)

Oliver, Vanessa L; Athavale, Stephanie; Simon, Katherine E; Kendall, Lon V; Nemzek, Jean A; Lofgren, Jennifer L

2017-01-01

Guinea pigs (Cavia porcellus) are a frequently used species in research, often involving potentially painful procedures. Therefore, evidence-based recommendations regarding analgesia are critically needed to optimize their wellbeing. Our laboratory examined the efficacy of carprofen and extended-release (ER) buprenorphine, alone and as a multimodal combination, for relieving postsurgical pain in guinea pigs. Animals were assessed by using evoked (mechanical hypersensitivity), nonevoked (video ethogram, cageside ethogram, time-to-consumption test), and clinical (weight loss) measurements for 96 h during baseline, anesthesia–analgesia, and hysterectomy conditions. In addition, ER buprenorphine was evaluated pharmacologically. Guinea pigs treated with a single analgesic showed increased mechanical sensitivity for at least 96 h and indices of pain according to the video ethogram for as long as 8 h, compared with levels recorded during anesthesia–analgesia. In contrast, animals given both analgesics demonstrated increased mechanical sensitivity and behavioral evidence of pain for only 2 h after surgery compared with anesthesia–analgesia. The cageside ethogram and time-to-consumption tests failed to identify differences between conditions or treatment groups, highlighting the difficulty of identifying pain in guinea pigs without remote observation. Guinea pigs treated with multimodal analgesia or ER buprenorphine lost at least 10% of their baseline weights, whereas weight loss in carprofen animals was significantly lower (3%). Plasma levels for ER buprenorphine exceeded 0.9 ng/mL from 8 to 96 h after injection. Of the 3 analgesia regimens evaluated, multimodal analgesia provided the most effective pain control in guinea pigs. However the weight loss in the ER buprenorphine–treated animals may need to be considered during analgesia selection. PMID:28724492

The effect of addition of dexamethasone to levobupivacaine in parturients receiving combined spinal-epidural for analgesia for vaginal delivery

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Amr Samir Wahdan

2017-01-01

Full Text Available Background and Aims: Regional analgesia is commonly used for the relief of labour pain, Prolongation of analgesia can be achieved by adjuvant medications. The aim of this randomised controlled trial was to evaluate the efficacy of intrathecal levobupivacaine with dexamethasone for labour analgesia. Methods: A total of 80 females were included in this study, all were primigravidas undergoing vaginal delivery with cervical dilatation ≥4 cm and 50% or more effacement. Forty females were included randomly in either Group L (received intrathecal levobupivacaine 0.25% in 2 mL or Group LD (received intrathecal levobupivacaine 0.25% combined with dexamethasone 4 mg in 2 mL. The primary outcome was the duration of spinal analgesia. Secondary outcomes included the total dose of epidural local anaesthetic given, time to delivery, neonatal outcome and adverse effects. Results: The duration of spinal analgesia was significantly longer in the LD group compared with L group (80.5 ± 12.4 min vs. 57.1 ± 11.5 min, respectively; P< 0.001. In Group LD compared with Group L, time from spinal analgesia to delivery was significantly lower (317.4 ± 98.9 min vs. 372.4 ± 118.8 min, respectively; P = 0.027, and total epidural levobupivacaine consumption was significantly lower (102.4 ± 34.8 mg vs. 120.1 ± 41.9 mg, respectively; P = 0.027. The two groups were comparable with respect to characteristics of sensory and motor block, haemodynamic parameters, pain scores, neonatal outcome and frequency of adverse effects. Conclusion: Intrathecal dexamethasone plus levobupivacaine prolongs the duration of spinal analgesia during combined spinal-epidural CSE for labour analgesia.

Predicting early epidurals: association of maternal, labor, and neonatal characteristics with epidural analgesia initiation at a cervical dilation of 3 cm or less.

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Moore, Albert R; Shan, William Li Pi; Hatzakorzian, Roupen

2013-01-01

Retrospective studies have associated early epidural analgesia with cesarean delivery, but prospective studies do not demonstrate a causal relationship. This suggests that there are other variables associated with early epidural analgesia that increase the risk of cesarean delivery. This study was undertaken to determine the characteristics associated with early epidural analgesia initiation. Information about women delivering at 37 weeks or greater gestation with epidural analgesia, who were not scheduled for cesarean delivery, was extracted from the McGill Obstetric and Neonatal Database. Patients were grouped into those who received epidural analgesia at a cervical dilation of ≤3 cm and >3 cm. Univariable and multivariable logistic regression was used to determine the maternal, neonatal, and labor characteristics that increased the risk of inclusion in the early epidural group. Of the 13,119 patients analyzed, multivariable regression demonstrated odds ratios (OR) of 2.568, 5.915 and 10.410 for oxytocin augmentation, induction, and dinoprostone induction of labor (P analgesia (OR 0.780, P analgesia (P neonatal weight (OR 0.943, P analgesia. Labor augmentation and induction, nulliparity, rupture of membranes spontaneously and before labor starts, increasing maternal weight, and decreasing neonatal weight are associated with early epidural analgesia. Many of these variables are also associated with cesarean delivery.

The study of patient controlled analgesia undergoing interventional therapy for gynecology and obstetrics ailment

International Nuclear Information System (INIS)

She Shouzhang

2006-01-01

Uterine artery embolism is widely used for interventional therapy of gynecology and obstetrics ailment, but immediate incidence of pain occurs in 90% to 100% after uterine artery embolism and postoperative incidence of pain takes place from 80% to 90%. Patient controlled epidural analgesia (PCEA) could be adopted to treat pain with obviously outweighed effects over the traditional drug regimen or patient intravenous analgesia during the period of interventional therapy of uterine artery embolization. PCEA possesses good effect of analgesia and less adverse reaction and furthermore could eliminate or lessen the sufferings of patient and thus improve rehabilitation quality. Adding droperidol (0.005%) into the preparation of PCEA could decrease adverse effect incidence of nausea and vomiting; so it deserves recommendation for extending application in clinical interventional therapy. (authors)

Transcutaneous Electrical Nerve Stimulation (TENS) for the Control of Pain during Rehabilitation Following Total Knee Arthroplasty (TKA): A Randomized, Blinded, Placebo-Controlled Trial

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Rakel, Barbara; Zimmerman, M. Bridget; Geasland, Katharine; Embree, Jennie; Clark, Charles R; Noiseux, Nicolas O; Callaghan, John J; Herr, Keela; Walsh, Deirdre; Sluka, Kathleen A

2014-01-01

This study evaluated the efficacy of TENS in reducing pain and hyperalgesia and increasing function following total knee arthroplasty (TKA). We hypothesized participants using TENS during rehabilitation exercises would: 1) report significantly lower pain during range-of-motion (ROM) and fast walking but not at rest; 2) have less hyperalgesia; and, 3) have better function than participants receiving Placebo-TENS or Standard Care. We also hypothesized that change in ROM pain would differ based on psychological characteristics (trait anxiety, pain catastrophizing and depression) and treatment group. This prospective, randomized study used intent-to-treat analyses on 317 subjects after primary, unilateral TKA. Assessors, blinded to treatment allocation, measured pain, function (ROM and gait speed), and hyperalgesia (quantitative sensory tests) postoperatively and 6 weeks after surgery. Analgesic intake, anxiety, depression, and pain catastrophizing were also assessed. TENS participants used it 1–2 times/day at 42 mA (on average) and had less pain postoperatively during active knee extension (p=0.019) and fast walking (p=0.006) than Standard Care participants. TENS and Placebo-TENS were not significantly different. TENS participants who scored low on anxiety and pain catastrophizing had a greater reduction in ROM pain at 6 weeks than those scoring high on these factors (p=0.002 and 0.03). Both TENS and Placebo-TENS participants had less postoperative mechanical hyperalgesia (p=0.03 – 0.01) than Standard Care participants. Supplementing pharmacologic analgesia with TENS during rehabilitation exercises reduces movement pain postoperatively but a placebo influence exists and the effect is gone by 6 weeks. Patients with low anxiety and pain catastrophizing may benefit most from TENS. PMID:25270585

Involvement of spinal orexin A in the electroacupuncture analgesia in a rat model of post-laparotomy pain

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Feng Xiao-Ming

2012-11-01

Full Text Available Abstract Background Orexin A (OXA, hypocretin/hcrt 1 is a newly discovered potential analgesic substance. However, whether OXA is involved in acupuncture analgesia remains unknown. The present study was designed to investigate the involvement of spinal OXA in electroacupuncture (EA analgesia. Methods A modified rat model of post-laparotomy pain was adopted and evaluated. Von Frey filaments were used to measure mechanical allodynia of the hind paw and abdomen. EA at 2/15 Hz or 2/100 Hz was performed once on the bilateral ST36 and SP6 for 30 min perioperatively. SB-334867, a selective orexin 1 receptor (OX1R antagonist with a higher affinity for OXA than OXB, was intrathecally injected to observe its effect on EA analgesia. Results OXA at 0.3 nmol and EA at 2/15 Hz produced respective analgesic effects on the model (P0.05. In addition, naloxone, a selective opioid receptor antagonist, failed to antagonize OXA-induced analgesia (P>0.05. Conclusions The results of the present study indicate the involvement of OXA in EA analgesia via OX1R in an opioid-independent way.

Intrathecal isobaric ropivacaine-fentanyl versus intrathecal isobaric bupivacaine-fentanyl for labor analgesia: A controlled comparative double-blinded study

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Meenoti Pramod Potdar

2014-01-01

Full Text Available Context: Neuraxial analgesia and walking epidural is the popular method of practicing labor analgesia. The combination of local anesthetic and opioid is advantageous as it prolongs the duration of labor analgesia. Ropivacaine is the newer local anesthetic agent having lesser motor effects and toxic effects hence would be preferred for labor analgesia. Aims: The primary objective of the study was to assess the duration of analgesia of the intrathecal drug. The secondary objective was the assessment of onset, fixation of analgesia, motor weakness, ambulation, sedation, incidence of side-effects, maternal, and neonatal outcomes. Settings and Design: This is prospective, randomized, controlled, double-blinded, study of 120 patients consenting for labor analgesia. Subjects and Methods: A total of 120 primiparas with a singleton pregnancy in active labor who were given combined spinal epidural (CSE were included in the study. These patients were randomly allocated to three groups of 40 each and received CSE. Group F-received 25 μcg fentanyl intrathecally. Group BF-received 25 μcg fentanyl with 2.5 mg isobaric bupivacaine intrathecally. Group RF-received 25 μcg fentanyl with 2.5 mg isobaric ropivacaine intrathecally. Statistical Analysis Used: Correlations among different measurements were assessed using Pearson′s correlation coefficients, P <0.05 was considered to be statistically significant. Results: The three groups show comparable demographic data and obstetric parameters. The duration of spinal analgesia was significantly greater with Group RF 106.63 ± 17.99 min and Group BF 111.75 ± 23.58 min than the control Group F which was 60 ± 10.39 min with P = 0.001, but were comparable for Group BF and RF. The secondary outcome was comparable in all the three groups. Conclusions: The addition of bupivacaine or ropivacaine to fentanyl intrathecally increased duration and quality of analgesia, did not affect ambulation and bearing down. The

Comparison of bupivacaine, ropivacaine and levobupivacaine with sufentanil for patient-controlled epidural analgesia during labor: a randomized clinical trial

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WANG Li-zhong; CHANG Xiang-yang; LIU Xia; HU Xiao-xia; TANG Bei-lei

2010-01-01

Background Ropivacaine and levobupivacaine have been introduced into obstetric analgesic practice with the proposed advantages of causing less motor block and toxicity compared with bupivacaine. However, it is still controversial whether both anesthetics are associated with any clinical benefit relative to bupivacaine for labor analgesia. This study aimed to compare the analgesic efficacy, motor block and side effects of bupivacaine, ropivacaine and levobupivacaine at lower concentrations for patient-controlled epidural labor analgesia. Methods Four hundred and fifty nulliparous parturients were enrolled in this randomized clinical trial. A concentration of 0.05%, 0.075%, 0.1%, 0.125% or 0.15% of either bupivacaine (Group B), ropivacaine (Group R) or levobupivacaine (Group L) with sufentanil 0.5 μg/ml was epidurally administered by patient-controlled analgesia mode. Effective analgesia was defined as a visual analogue scale score was ≤30 mm. The relative median potency for each local anesthetic was calculated using a probit regression model. Parturients demographics, sensory and motor blockade, obstetric data, maternal side effects, hourly volumes of local anesthetic used, and others were also noted. Results There were no significant differences among groups in the numbers of effective analgesia, pain scores, hourly local anesthetic amount used, sensory and motor blockade, labor duration and mode of delivery, side effects and maternal satisfaction (P >0.05). The relative median potency was bupivacaine/ropivacaine: 0.828 (0.602-1.091), bupivacaine/levobupivacaine: 0.845 (0.617-1.12), ropivacaine/levobupivacaine: 1.021 (0.774-1.354), respectively. However, a significantly less number of effective analgesia and higher hourly local anesthetic use were observed in the concentration of 0.05% than those of ≥0.1% within each group (P<0.05). Conclusions Using patient-controlled epidural analgesia, lower concentrations of bupivacaine, ropivacaine and levobupivacaine

Analgesia obstétrica farmacológica: um estudo sobre os desfechos obstétricos e neonatais

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Ruanna Lorna Vieira Fernandes

2017-01-01

Full Text Available Objective: to investigate the association between pharmacological obstetric analgesia and obstetric and neonatal outcomes. Methods: it was a retrospective case-control study conducted with 393 pregnant women comprising 131 cases of pharmacological obstetric analgesia and 262 controls that did not perform this procedure. The sociodemographic and obstetric profile, the circumstances of parturient admission, obstetrical decisions, and obstetric and neonatal outcomes were investigated. Results: pregnant women submitted to pharmacological analgesia during labor presented an increased risk for the use of exogenous oxytocin (p<0.001, episiotomy (p=0.001, Kristeller maneuver (p=0.036, and forceps (p=0.004. Conclusion: pharmacological analgesia does not increase the risk of spontaneous perineal tear, abdominal delivery, and hospitalization in neonatal unit. Nevertheless, it influences the increased risk of synthetic oxytocin use, Kristeller maneuver, episiotomy, forceps, and the occurrence of lower first-minute Apgar scores.

Premedication with gabapentin, alprazolam or a placebo for abdominal hysterectomy: Effect on pre-operative anxiety, post-operative pain and morphine consumption

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Tim Thomas Joseph

2014-01-01

Full Text Available Background and Aims : Utility of gabapentin for pre-operative anxiolysis as compared to commonly administered alprazolam is not evident. The aim of the present study was to compare the effects of pre-operative oral gabapentin 600 mg, alprazolam 0.5 mg or a placebo on pre-operative anxiety along with post-operative pain and morphine consumption. Methods: Seventy five patients scheduled for abdominal hysterectomy under general anaesthesia were included. Groups gabapentin, alprazolam and placebo, received oral gabapentin 600 mg, alprazolam 0.5 mg and one capsule of oral B-complex forte with Vitamin C respectively, on the night prior to surgery and 2 h prior to surgery. Visual analogue scale (VAS was used to measure the anxiety and post-operative pain. All patients received patient-controlled analgesia. Statistical tests used were Kruskal-Wallis test, Wilcoxon signed rank test and one-way ANOVA. Results: Alprazolam provided significant anxiolysis (median [interquartile range] baseline VAS score 35 [15.5, 52] to 20 [6.5, 34.5] after drug administration; P = 0.007. Gabapentin did not provide significant decrease in anxiety (median [interquartile range] VAS score 21 [7.5, 41] to 20 [6.5, 34.5]; P = 0.782. First analgesic request time (median [interquartile range in minutes] was longer in group gabapentin (17.5 [10, 41.25] compared to group placebo (10 [5, 15] (P = 0.019 but comparable to that in group alprazolam (15 [10, 30]. Cumulative morphine consumption at different time periods and total morphine consumption (mean [standard deviation] at the end of study period (38.65 [18.04], 39.91 [15.73], 44.29 [16.02] mg in group gabapentin, alprazolam and placebo respectively were comparable. Conclusion: Gabapentin 600 mg does not have significant anxiolytic effect compared to alprazolam 0.5 mg. Alprazolam 0.5 mg was found to be an effective anxiolytic in the pre-operative period. Neither alprazolam nor gabapentin, when compared to placebo showed any opioid

[The influence of patient-controlled epidural analgesia on labor progress and neonatal outcome].

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Rzepka, Rafał; Zukowski, Maciej; Michalczyk, Michał; Nikodemski, Tomasz; Torbé, Andrzej; Kwiatkowski, Sebastian; Mikołajek-Bedner, Wioletta; Czajka, Ryszard

2012-02-01

The aim of the study was to check the influence of patient control epidural analgesia on labor progress and neonatal outcome. 144 parturients were included into the clinical trial. In 73 cases patient control epidural analgesia was used and in 71 cases pethidine (meperidine) solution was given intravenously. Apgar score, umbilical artery pH, pain intensity the time of the first, second and third stage of labor the rate of episiotomy and uterine postpartum abrasions and the rate of caesarean sections and vaginal operative delivery were compared. The time of the second stage of labor was significantly longer in the study group (40.99 vs 26.49 min, p- neonatal outcome was comparable in both groups. There were no differences in the time of the first and the second stage of labor in primiparas and multiparas analyzed separately. Visual Analogue Score was lower in the study group (Ch(2)-12,48, p-0.25), especially in the subgroups of primiparas and multiparas. Patient control epidural analgesia does not affect the time of the first and second stage of labor, oxytocin augmentation of labor may be the reason of that. This method is a more effective way of relieving labor pain. An increase of operative delivery is not observed after patient control epidural analgesia on condition that low doses and concentrations of analgesic drugs are used.

Predicting placebo response in adolescents with major depressive disorder: The Adolescent Placebo Impact Composite Score (APICS).

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Nakonezny, Paul A; Mayes, Taryn L; Byerly, Matthew J; Emslie, Graham J

2015-09-01

The aim of this study was to construct a composite scoring system to predict the probability of placebo response in adolescents with Major Depressive Disorder (MDD). Participants of the current study were 151 adolescents (aged 12-17 years) who were randomized to the placebo arm (placebo transdermal patches) of a randomized controlled trial (RCT) comparing the selegiline transdermal patch with placebo (DelBello et al., 2014). The primary outcome of response was defined as a CGI-I score of 1 or 2 (very much or much improved) at week 12 (study-end) or exit. As a first step, a multiple logistic mixed model was used to estimate the odds of placebo response from each predictor in the model, including age, CDRS-R total at baseline (depressive symptom severity), history of recurrent depression (yes vs. no), sex (female vs. male), and race (non-Caucasian vs. Caucasian). On the basis of the initial logistic mixed model analysis, we then constructed an Adolescent Placebo Impact Composite Score (APICS) that became the sole predictor in a re-specified Bayesian logistic regression model to estimate the probability of placebo response. Finally, the AUC for the APICS was tested against a nominal area of 0.50 to evaluate how well the APICS discriminated placebo response status. Among the 151 adolescents, with a mean age of 14.6 years (SD = 1.6) and a mean baseline CDRS-R total of 60.6 (SD = 12.1), 68.2% were females, 50.3% was Caucasian, and 39.7% had a history of recurrent depression. Placebo response rate was 58.3%. Based on the logistic mixed model, the re-specified equation with the highest discriminatory ability to estimate the probability of placebo response was APICS = age + (0.32 × CDRS-R Total at baseline) + (-2.85 × if female) + (-5.50 × if history of recurrent depression) + (-5.85 × if non-Caucasian). The AUC for this model was 0.59 (p = .049). Within a Bayesian decision-theoretic framework, in 95.5% of the time, the 10,000 posterior Monte Carlo samples suggested

Retrospective study of the association between epidural analgesia during labour and complications for the newborn.

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Herrera-Gómez, A; García-Martínez, O; Ramos-Torrecillas, J; De Luna-Bertos, E; Ruiz, C; Ocaña-Peinado, F M

2015-06-01

our objective was to determine the association between epidural analgesia and different variables. the effect on newborns of epidural analgesia administered to the mother during labour remains under debate. this association was retrospectively investigated in a cohort of 2399 children born in a Spanish public hospital. Only full-term (>37 weeks of gestation) deliveries were included. Other exclusion criteria were: induced delivery (medical or obstetric indication), elective caesarean section, or the presence of an important pregnancy risk factors (hypertension, diabetes, severe disease, toxaemia, retarded intrauterine growth, chronologically prolonged pregnancy, prolonged membrane rupture (>24 hours), oligoamnios, or polyhydramnios). The Mann-Whitney U test and Fisher׳s exact test were applied to determine the relationship between variables. Apgar index values at one minute and five minutes were slightly but significantly lower in neonates whose mothers had received epidural analgesia. Neonatal intensive care unit admission was significantly more frequent in the epidural versus non-epidural group. Resuscitation was significantly more frequent in the epidural versus non-epidural group. Early breast feeding onset was more frequent in the non-epidural group. The adverse effect of epidural analgesia on early lactation remained significant after adjusting for NICU admission and the need for resuscitation in a logistic regression analysis. Epidural analgesia may have adverse effects on newborns, although the risks are low, and further research is required to elucidate the causal nature of this relationship. Copyright © 2015 Elsevier Ltd. All rights reserved.

Comparison of dural puncture epidural technique versus conventional epidural technique for labor analgesia in primigravida

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Pritam Yadav

2018-01-01

Full Text Available >Background: Dural puncture epidural (DPE is a method in which a dural hole is created prior to epidural injection. This study was planned to evaluate whether dural puncture improves onset and duration of labor analgesia when compared to conventional epidural technique.Methods and Materials: Sixty term primigravida parturients of ASA grade I and II were randomly assigned to two groups of 30 each (Group E for conventional epidural and Group DE for dural puncture epidural. In group E, epidural space was identified and 18-gauge multi-orifice catheter was threaded 5 cm into the epidural space. In group DE, dura was punctured using the combines spinal epidural (CSE spinal needle and epidural catheter threaded as in group E followed by 10 ml of injection of Ropivacaine (0.2% with 20 mcg of Fentanyl (2 mcg/ml in fractions of 2.5 ml. Later, Ropivacaine 10 ml was given as a top-up on patient request. Onset, visual analouge scale (VAS, sensory and motor block, haemodynamic variables, duration of analgesia of initial dose were noted along with mode of delivery and the neonatal outcome.Results: Six parturients in group DE achieved adequate analgesia in 5 minutes while none of those in group E (P 0.05.Conclusions: Both techniques of labor analgesia are efficacious; dural puncture epidural has the potential to fasten onset and improve quality of labor analgesia when compared with conventional epidural technique.

Sedation and analgesia practices in neonatal intensive care units (EUROPAIN): results from a prospective cohort study

NARCIS (Netherlands)

Carbajal, Ricardo; Eriksson, Mats; Courtois, Emilie; Boyle, Elaine; Avila-Alvarez, Alejandro; Andersen, Randi Dovland; Sarafidis, Kosmas; Polkki, Tarja; Matos, Cristina; Lago, Paola; Papadouri, Thalia; Montalto, Simon Attard; Ilmoja, Mari-Liis; Simons, Sinno; Tameliene, Rasa; van Overmeire, Bart; Berger, Angelika; Dobrzanska, Anna; Schroth, Michael; Bergqvist, Lena; Lagercrantz, Hugo; Anand, Kanwaljeet J. S.; Kiechl-Kohlendorfer, Ursula; Trinkl, Anna; Deindl, Philipp; Wald, Martin; Rigo, Vincent; Dussart, Anneliese; Dierckx, Elke; Coppens, Sophie; Kiilsapaa, Birgit; Metsvaht, Tuuli; Metsäranta, Marjo; Nikolajev, Kari; Saarela, Timo; Peltoniemi, Outi; Tammela, Outi; Lehtonen, Liisa; Savagner, Christophe; Sevestre, Anna; Alexandre, Cénéric; Bouchon-Guedj, Nathalie; Saumureau, Simone; Grosse, Camille; Jouvencel, Philippe; Ramful, Duksha; Clamadieu, Catherine; Mourdie, Julien; Montcho, Yannis; Cambonie, Gilles; Di Maio, Massimo; Patural, Hugues; Asrtuc, Dominique; Norbert, Karine; Bouchera, Kassis; Lang, Mathieu; Galene Gromez, Sophie; Hamon, Isabelle; Nolent, Paul; Ntwari, René-Christian; Lallemant, Carine; Chary Tardy, Anne Cécile; Pelluau, Sonia; Roue, Jean Michel; Picaud, Jean Charles; Camelio, Aurélie; Tourneux, Pierre; Saint-Faust, Marie; Morville, Patrice; David, Alexandra; Theret, Bernard; Frédérique, Martin; Topf, Georg; Menendez-Castro, Ricardo; Fujiwara-Pichler, Erhard; Deeg, Karl Heinz; Anatolitou, Fani; Baroutis, George; Papazafeiratou, Chrissoulan; Giannakopoulou, Christine; Baltogianni, Maria; Delivoria, Varvara; Sterpi, Magdalena; Saklamaki-Kontou, Melpomeni; Dimitriou, Gabriel; Charitou, Antonia; Thomaidou, Agathi; Chatziioannidis, Ilias; Salvanos, Iraklis; Pirelli, Anna; Poggiani, Carlo; Fasolato, Valeria; Cristofori, Gloria; Gomirato, Serena; Allegro, Antonella; Alfiero, Michela; Biban, Paolo; Bertolini, Alessandra; Golin, Rosanna; Franco, Elena; Molinaro, Grazia; Federica, Visintini; Rossini, Roberto; Garetti, Elisabetta; Faraoni, Maddalena; Dani, Carlo; Germini, Cristina; Braguglia, Annabella; Benigni, Gina; Azzali, Adriano; Santa, Barresi; Romoli, Raffaella; Carrera, Giuseppe; Miria, Natile; Savant, Patrizia; Cossu, Maria Antonia; Giancarlo, Gargano; Cassar, Robert; Bos, Annelis; van Kaam, Anton; Brouwer, Mieke; van Lingen, Richard; Bambang Oetomo, Sidarto; Sivertsen, Wiebke; Nakstad, Britt; Solhjell, Kari; Flagstad, Gro; Salvesen, Bodil; Nessestrand, Ingunn A. M.; Nordhov, Marianne; Anderssen, Sven-Harald; Wasland, Kristin; Danielsen, Kåre; Kristoffersen, Laila Marie; Ytterdahl Bergland, Unni; Borghild Stornes, Randi; Andresen, Jannicke; Solberg, Rønnaug; Hochnowski, Kristoffer; Terpinska, Ewa; Kociszewska-Najman, Bozena; Melka, Andrzej; Głuszczak, Ewa; Niezgoda, Anna; Borszewska-Kornacka, Maria Katarzyna; Witwicki, Jacek M.; Korbal, Piotr; Ramos, Helena; Garcia, Pedro; Machado, Cidália; Clemente, Fátima; Costa, Miguel; Trindade, Cristina; Salazar, Anabela; Martins Barroso, Laura; Resende, Cristine; Afonso, Maria Eulàlia; Torres, Jacinto; Maciel, Paula; Nunes, José Luis; Neve Dos Santos, Vera Alexandra; Melgar Bonis, Ana; Euba Lopez, Aintzane; Tapia Collados, Caridad; Jesus Ripalda, María; Solis Sanchez, Gonzalo; Martin Parra, Belén; Botet, Francesc; Fernandez Trisac, Jose Luis; Elorza Fernandez, María Dolores; Arriaga Redondo, María; Bargallo Ailagas, Eva; Saenz, Pilar; Lopez Ortego, Paloma; Ventura, Purificación; Galve, Zenaida; Perez Ocon, Amaya; Crespo Suarez, Pilar; Dianez Vega, Gloria; San Feliciano, Laura; Herranz Carillo, Gloria; Esteban Diez, Inés; Reyné, Mar; Garcia Borau, María José; de Las Cuevas, Isabel; Couce, María L.; González Carrasco, Ersilia; Montoro Exposito, Aurora; Concheiro Guisan, Ana; Luna Lagares, Salud; Sanchez Redondo, Maria Dolores; Hellström Westas, Lena; Moren, Stefan; Norman, Elisabeth; Olsson, Emma; Åberg, Emma; Printz, Gordana; Turner, Mark; McBride, Tim; Bomont, Robert; Webb, Delyth; Saladi, Murthy; Thirumurugan, Arumugavelu; Brooke, Nigel; Skene, Caryl; Bilolikar, Harsha; Noble, Vibert; Vora, Amish; Thompson, Fiona; Deorukhkar, Anjum; El-Refee, Sherif; McIntyre, John; Millman, Guy; Reed, Joanne; Babirecki, Matthew; Kumar, Dev; Yadav, Mahesh; O'Brien, Margaret; Gasiorowski, Edward Robert; Rawlingson, Chris; Shastri, Aravind; Tibby, Shane; Walsh, Sandra; Azzopardi, Denis; Soe, Aung; MaCrae, Duncan; Eyre, Elizabeth; Menon, Gopi; Gupta, Samir; James, Anitha; Surana, Pinki; Adams, Eleri; Wolf, Andrew; Maxwell, Nicola; Wagstaff, Miles; Mann, Rebecca; Kumar, Yadlapalli; Quinn, Michael; Jones Dyson, Steve; Mannix, Paul; Morris, Kevin; Ewer, Andrew; Gurusamy, Kalyana; Deshpande, Sanjeev; Alexander, John; Blake, Kathryn; Kumar, Siva; Oddie, Sam; Ohadike, Pamela; McKechnie, Liz; Gibson, David; Shirsalkar, Anand; Suryanarayanan, Balaji; Hubbard, Marie; Lal, Mithilesh; Ali, Imdad; Shah, Divyen; Sketchley, Suzanne; Gupta, Richa; Schofield, Joanne; Ezzat, Medhat; Mupanemunda, Richard; Gallagher, Andrew; Kronsberg, Shari

2015-01-01

Background Neonates who are in pain or are stressed during care in the intensive care unit (ICU) are often given sedation or analgesia. We investigated the current use of sedation or analgesia in neonatal ICUs (NICUs) in European countries. Methods EUROPAIN (EUROpean Pain Audit In Neonates) was a

Improving postoperative tonsillectomy pain management in children--a double blinded randomised control trial of a patient analgesia information sheet.

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Bailey, Lucas; Sun, Jing; Courtney, Mark; Murphy, Paul

2015-05-01

To evaluate paediatric post-tonsillectomy pain management using oxycodone when a specific analgesia information sheet is included with standard postoperative information. Oxycodone information sheets were randomly allocated to half the study children's post-tonsillectomy information pack. The trial was double-blinded to the surgeon, anaesthetist, nursing and administrative staff. Parents and children completed the pain assessment on day 3, 5 and 7. On day 10 the parents completed a questionnaire. A postoperative analgesia information sheet provides for higher satisfaction and knowledge for parents using oxycodone (psheet, most significantly at day 3 and 7 post operatively (psheets are useful in education and use of postoperative analgesia. The primary objective to explore the efficacy of the information sheet has proved to be successful in this setting. Given risks of opioid analgesia, it is recommended that postoperative information sheets be given to all parents, to provide for improved analgesia control and safe management of children in the postoperative period. Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.

N-Acetyl-cysteine causes analgesia by reinforcing the endogenous activation of type-2 metabotropic glutamate receptors

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Bernabucci Matteo

2012-10-01

Full Text Available Abstract Background Pharmacological activation of type-2 metabotropic glutamate receptors (mGlu2 receptors causes analgesia in experimental models of inflammatory and neuropathic pain. Presynaptic mGlu2 receptors are activated by the glutamate released from astrocytes by means of the cystine/glutamate antiporter (System xc- or Sxc-. We examined the analgesic activity of the Sxc- activator, N-acetyl-cysteine (NAC, in mice developing inflammatory or neuropathic pain. Results A single injection of NAC (100 mg/kg, i.p. reduced nocifensive behavior in the second phase of the formalin test. NAC-induced analgesia was abrogated by the Sxc- inhibitor, sulphasalazine (8 mg/kg, i.p. or by the mGlu2/3 receptor antagonist, LY341495 (1 mg/kg, i.p.. NAC still caused analgesia in mGlu3−/− mice, but was inactive in mGlu2−/− mice. In wild-type mice, NAC retained the analgesic activity in the formalin test when injected daily for 7 days, indicating the lack of tolerance. Both single and repeated injections of NAC also caused analgesia in the complete Freund’s adjuvant (CFA model of chronic inflammatory pain, and, again, analgesia was abolished by LY341495. Data obtained in mice developing neuropathic pain in response to chronic constriction injury (CCI of the sciatic nerve were divergent. In this model, a single injection of NAC caused analgesia that was reversed by LY341495, whereas repeated injections of NAC were ineffective. Thus, tolerance to NAC-induced analgesia developed in the CCI model, but not in models of inflammatory pain. The CFA and CCI models differed with respect to the expression levels of xCT (the catalytic subunit of Sxc- and activator of G-protein signaling type-3 (AGS3 in the dorsal portion of the lumbar spinal cord. CFA-treated mice showed no change in either protein, whereas CCI mice showed an ipislateral reduction in xCT levels and a bilateral increase in AGS3 levels in the spinal cord. Conclusions These data demonstrate that

Molecular and cellular mechanisms of the age-dependency of opioid analgesia and tolerance

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Zhao Jing

2012-05-01

Full Text Available Abstract The age-dependency of opioid analgesia and tolerance has been noticed in both clinical observation and laboratory studies. Evidence shows that many molecular and cellular events that play essential roles in opioid analgesia and tolerance are actually age-dependent. For example, the expression and functions of endogenous opioid peptides, multiple types of opioid receptors, G protein subunits that couple to opioid receptors, and regulators of G protein signaling (RGS proteins change with development and age. Other signaling systems that are critical to opioid tolerance development, such as N-methyl-D-aspartic acid (NMDA receptors, also undergo age-related changes. It is plausible that the age-dependent expression and functions of molecules within and related to the opioid signaling pathways, as well as age-dependent cellular activity such as agonist-induced opioid receptor internalization and desensitization, eventually lead to significant age-dependent changes in opioid analgesia and tolerance development.

Caudal analgesia for herniotomy: Comparative evaluation of two ...

African Journals Online (AJOL)

Objective: There is currently a wide range of volume schemes for bupivacaine caudal anesthesia. This study evaluated the quality of caudal analgesia achieved with a dosing scheme of 0.75 ml/kg compared with 0.5 ml/kg of 0.25% plain bupivacaine for herniotomy. Methods: After the institutional approval, American Society ...

Prehospital Use of Ketamine in Battlefield Analgesia

Science.gov (United States)

2012-03-08

Breathing a. In a casualty with progressive respiratory distress and known or suspected torso trauma , consider a tension pneumothorax and... pneumothorax and decompress the chest on the side of the injury with a 14-gauge, 3.25 inch needle/catheter unit inserted in the second...Military Advanced Regional Anesthesia and Analgesia Handbook, U.S. Special Operations Command Tactical Trauma Protocols (since 2008), Army Ranger Medic

Placebo interventions for all clinical conditions

DEFF Research Database (Denmark)

Hróbjartsson, Asbjørn; Gøtzsche, Peter C

2010-01-01

Placebo interventions are often claimed to substantially improve patient-reported and observer-reported outcomes in many clinical conditions, but most reports on effects of placebos are based on studies that have not randomised patients to placebo or no treatment. Two previous versions of this re...... of this review from 2001 and 2004 found that placebo interventions in general did not have clinically important effects, but that there were possible beneficial effects on patient-reported outcomes, especially pain. Since then several relevant trials have been published.......Placebo interventions are often claimed to substantially improve patient-reported and observer-reported outcomes in many clinical conditions, but most reports on effects of placebos are based on studies that have not randomised patients to placebo or no treatment. Two previous versions...

Side effects of pain and analgesia in animal experimentation.

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Jirkof, Paulin

2017-03-22

This review highlights selected effects of untreated pain and of widely used analgesics such as opioids, non-steroid anti-inflammatory drugs and antipyretics, to illustrate the relevance of carefully planned, appropriate and controlled analgesia for greater reproducibility in animal experiments involving laboratory rodents.

A psychophysical study of endogenous analgesia: the role of the conditioning pain in the induction and magnitude of conditioned pain modulation.

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Nir, Rony-Reuven; Granovsky, Yelena; Yarnitsky, David; Sprecher, Elliot; Granot, Michal

2011-05-01

Endogenous analgesia (EA) can be examined experimentally using a conditioned pain modulation (CPM) paradigm. While noxious conditioning stimulation intensities (CSIs) are mainly used, it has not been fully investigated in the same experimental design whether the experienced conditioning pain level affects CPM responses. The principal goal of the present study was to characterize CPM induction and magnitudes evoked by various conditioning pain levels. Furthermore, we explored associations between conditioning pain reports and CPM responses across various CSIs. Thirty healthy, young, right-handed males were tested with a parallel CPM paradigm. Three different CSIs (hand water-immersion) induced mild, moderate and intense pain levels, rated 12.41 ± 7.85, 31.57 ± 9.56 and 58.1 ± 11.43, respectively (0-100 numerical pain scale) (P < 0.0001). Contact-heat 'test-stimulus' levels were compared before and during conditioning. Within the group, (i) CPM was induced only by the moderate and intense CSIs (Ps ≤ 0.001); (ii) no difference was demonstrated between the magnitudes of these CPM responses. Regression analysis revealed that CPM induction was independent of the perceived conditioning pain level, but associated with the absolute CSI (P < 0.0001). Conditioning pain levels were correlated across all CSIs, as were CPM magnitudes (Ps ≤ 0.01). We conclude that among males, (i) once a CPM response is evoked by a required conditioning pain experience, its magnitude is not further affected by increasing conditioning pain and (ii) CPM magnitudes are inter-correlated, but unrelated to conditioning pain reports. These observations may suggest that CPM responses represent an intrinsic element of an individual's EA processes, which are not significantly affected by the experienced conditioning pain. Copyright © 2010 European Federation of International Association for the Study of Pain Chapters. Published by Elsevier Ltd. All rights reserved.

Analgesia pós-operatória em cirurgia ortopédica: estudo comparativo entre o bloqueio do plexo lombar por via perivascular inguinal (3 em 1 com ropivacaína e a analgesia subaracnóidea com morfina Analgesia pós-operatoria en cirugía ortopédica: estudio comparativo entre el bloqueo del plexo lombar por vía perivascular inguinal (3 en 1 con ropivacaína y la analgesia subaracnóidea con morfina Postoperative analgesia following orthopedic surgery: a study comparing perivascular lumbar plexus inguinal block with ropivacaine (3 in 1 and spinal anesthesia with morphine

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Neuber Martins Fonseca

2003-04-01

Full Text Available JUSTIFICATIVA E OBJETIVOS: O bloqueio do plexo lombar pelo acesso perivascular inguinal, chamado de bloqueio 3 em 1, tem sido utilizado para analgesia pós-operatória. O objetivo deste estudo foi comparar a analgesia pós-operatória do bloqueio 3 em 1 a da morfina subaracnóidea em pacientes submetidos a cirurgias ortopédicas em membro inferior (MI. MÉTODO: Foram estudados 40 pacientes escalados para cirurgia ortopédica de MI, de ambos os sexos, estado físico ASA I e II, com idades entre 15 e 75 anos, distribuídos em 2 grupos (M e BPL. Foi realizada anestesia subaracnóidea em todos os pacientes, em L3-L4 ou L4-L5, com 20 mg de bupivacaína isobárica a 0,5%. No grupo M (n = 20 foi associado 50 µg de morfina ao anestésico local. No grupo BPL (n = 20 foi realizado o bloqueio 3 em 1 ao término da cirurgia, utilizando 200 mg de ropivacaína a 0,5%. Avaliou-se a analgesia e a intensidade da dor às 4, 8, 12, 14, 16, 20 e 24 horas após o término da cirurgia, o nível do bloqueio subaracnóideo, o tempo cirúrgico e as complicações. RESULTADOS: A duração da analgesia no grupo BPL foi de 13,1 ± 2,47, enquanto no grupo M todos os pacientes referiam dor e ausência de bloqueio motor no primeiro instante avaliado (4 horas. Houve falha do bloqueio de um dos 3 nervos em 3 pacientes. A incidência de náusea e prurido foi significativamente maior no grupo M. Quanto à retenção urinária, não houve diferença significante entre os grupos. Não houve depressão respiratória, hipotensão arterial ou bradicardia. A analgesia pós-operatória foi mais efetiva no grupo BPL, comparada ao grupo M às 4, 8, 12,14 e 16 horas. Às 20 e 24 horas não houve diferença significante entre os grupos. CONCLUSÕES: A analgesia pós-operatória proporcionada pelo bloqueio 3 em 1 apresentou efeitos colaterais inferiores à morfina subaracnóidea com tempo de analgesia semelhante.JUSTIFICATIVA Y OBJETIVOS: El bloqueo del plexo lumbar por el acceso

Effects of Intrathecal Clonidine on Spinal Analgesia during Elective Cesarean Delivery: A Randomized Double Blind Clinical Trial

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Houshang Talebi

2016-05-01

Full Text Available In order To investigate the effect of addition of clonidine to lidocaine on duration of spinal analgesia and need for postoperative analgesics after Caesarean section delivery, this randomized case-controlled double-blind clinical trial was designed and conducted. 166 eligible women were randomly allocated to either case or control group (n=83, Spinal anesthesia was done by 75-100 mg lidocaine 0.5% in control group and by 75-100 mg lidocaine 0.5% plus 75µg clonidine in case group. Onset of analgesia, Blood pressure, Hypotension, Bradycardia, and Neonates Apgar scores were recorded during surgery. After surgery, duration of sensory and motor functions, Intensity of post-operative nausea and vomiting, Total analgesic consumption and time to first analgesic request were assessed. Data were analyzed by SPSS and an alpha level < 0.05 was considered to be statistically significant. Onset of analgesia, Duration of Motor and sensory block, mothers’ systolic blood pressure and pulse rate in different recorded times, and Total Analgesic consumption in case group showed a statically significant difference in comparison to the control group. Analgesia demanding, Time of first request for analgesics, Intensity of Nauseas and vomiting, Apgar score showed no significant difference. We have demonstrated that addition of 75 µg clonidine to lidocaine extends spinal analgesia along with sensory and motor block after Caesarean section and improves early analgesia without clinically significant maternal or neonatal side-effects. This single 75 µg intrathecal clonidine dose also reduced the amount of subsequent analgesic consumption during the first 12 hours after delivery.

An investigation into the effects of frequency-modulated transcutaneous electrical nerve stimulation (TENS) on experimentally-induced pressure pain in healthy human participants.

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Chen, Chih-Chung; Johnson, Mark I

2009-10-01

Frequency-modulated transcutaneous electrical nerve stimulation (TENS) delivers currents that fluctuate between preset boundaries over a fixed period of time. This study compared the effects of constant-frequency TENS and frequency-modulated TENS on blunt pressure pain in healthy human volunteers. Thirty-six participants received constant-frequency TENS (80 pps), frequency-modulated TENS (20 to 100 pps), and placebo (no current) TENS at a strong nonpainful intensity in a randomized cross-over manner. Pain threshold was taken from the forearm using pressure algometry. There were no statistical differences between constant-frequency TENS and frequency-modulated TENS after 20 minutes (OR = 1.54; CI, 0.29, 8.23, P = 1.0). Both constant-frequency TENS and frequency-modulated TENS were superior to placebo TENS (OR = 59.5, P TENS does not influence hypoalgesia to any greater extent than constant-frequency TENS when currents generate a strong nonpainful paraesthesia at the site of pain. The finding that frequency-modulated TENS and constant-frequency TENS were superior to placebo TENS provides further evidence that a strong yet nonpainful TENS intensity is a prerequisite for hypoalgesia. This study provides evidence that TENS, delivered at a strong nonpainful intensity, increases pain threshold to pressure algometry in healthy participants over and above that seen with placebo (no current) TENS. Frequency-modulated TENS does not increase hypoalgesia to any appreciable extent to that seen with constant-frequency TENS.

Acupuncture analgesia: The complementary pain management in dentistry

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Abdurachman Abdurachman

2011-03-01

Full Text Available Background: Pain is the most common reason for medical consultation in the United States. Pain is a major symptom in many medical conditions, and can significantly interfere with a person’s quality of life and general functioning. One of the very unpleasant pain is toothache. Conventional treatments for toothache are improving oral hygiene, prescribing analgesics, anti-inflammatory, and also antibiotics if there are infection even extractions are performed if necessary. Another way to conventional approaches, patients may consider acupuncture method. Acupuncture involves the insertion of needles with the width of a human hair along the precise points throughout the body. This process triggers body’s energy normal flow through extra anatomy pathway called meridian. Purpose: This case report is aimed to emphasize the existence of teeth-organ relationships through communication channels outside the lines of communication that has been known in anatomy. Case: Two patients with toothache complaints in the lower right molars came to an acupuncturist who was a medical practitioner. In these cases pain were relieved by acupuncture analgesia. Case management: Two patients were subjected to acupuncture analgesia with different acupuncture points that were customized to the affected tooth, case 1 with the large intestine-4 (Li-4 which located in the hand and case 2 with bladder-25 (Bl-25 which located in the back of the body. Ninety percent of pain was relieved in 40 seconds. Conclusion: Pain in toothache can be relieved using acupuncture analgesia technique, using meridian as an extra anatomy pathway. Nevertheless, treating the source of pain by dental practitioner is mandatory.Latar belakang: Nyeri adalah alasan paling umum yang menyebabkan orang datang berkonsultasi kepada profesional medis di Amerika Serikat. Nyeri merupakan gejala utama dalam kasus medis, dan dapat mengganggu kualitas hidup dan kegiatan umum seseorang secara signifikan. Salah satu

Clonidine versus sufentanil as an adjuvant to ropivacaine in patient-controlled epidural labour analgesia: A randomised double-blind trial.

Science.gov (United States)

Roelants, Fabienne; Lavand'homme, Patricia

2015-11-01

Adjuvants to local anaesthetics for epidural labour analgesia are useful if they reduce side-effects or personnel requirements. Epidural clonidine improves analgesia and provides a significant local anaesthetic-sparing effect. To compare the number of rescue doses administered by the anaesthesiologist when clonidine or sufentanil is added to epidural ropivacaine. A randomised double-blind trial. Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, Brussels, Belgium, from June 2009 to June 2010. One hundred and ninety-five women in labour. Epidural analgesia initiated with 10 ml ropivacaine 0.1%, women randomised to receive patient-controlled epidural analgesia (5 ml demand bolus, 15 min lockout) with ropivacaine 0.1% and sufentanil 0.25 μg ml⁻¹ (RS group; n = 65), or ropivacaine 0.1% and clonidine 1.5 μg ml⁻¹ (RC1.5 group; n = 65) or ropivacaine 0.1% and clonidine 3 μg ml⁻¹ (RC3 group; n = 65). Rescue analgesia was available as needed – 10 ml ropivacaine 0.1% (numerical rating scale neonatal outcomes were similar among the groups. Compared with sufentanil 0.25 μg ml⁻¹, addition of clonidine (1.5 to 3 μg ml⁻¹) to patient-controlled epidural analgesia with ropivacaine 0.1% provided similar labour analgesia and a similar need for anaesthesiologist-administered rescue doses. Clonidine 3 μg ml⁻¹ did not offer any advantage over clonidine 1.5 μg ml⁻¹. The instrumentation rate was higher in both the clonidine groups.

Acupuncture Anesthesia and Analgesia for Clinical Acute Pain in Japan

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Reina Taguchi

2008-01-01

Full Text Available Acupuncture anesthesia has been practiced in China since about 1960. In Japan, Hyodo reported 30 cases of acupuncture anesthesia in 1972. However, from around 1980, the direction of acupuncture investigations turned from anesthesia to analgesia. Acupuncture analgesia is presently considered a way to activate the body's endogenous analgesic system. Recently, with the rise of acupuncture as one of the most well known CAM therapies, acupuncture or moxibustion treatment has been reported for both acute and chronic pain. Even so, few clinical reports and original articles have been reported in Japan. This review illustrates how acupuncture is being used in Japan for acute pain such as surgical operations, post- operative pain (POP, neuropathic pain, pain associated with teeth extractions and after the extraction of impacted wisdom teeth.

The placebo effect and nothingness

DEFF Research Database (Denmark)

Jensen, Tine

In this paper I shall discuss the placebo effect from a posthuman angle. The placebo effect is a medical conundrum, as it is a medical effect that is produced by “nothing”. Placebo literally means, ”I please”, and the placebo has, among other things, been defined as an inert substance, often...... a calcium pill. Placebos are being used in medical trials to determine how much of the medical effect is caused by other factors than medical. There is a vast amount of literature on the placebo effect and it has been studied since the late 1940’ies, mainly for the purpose of pre-elimination from medical...... trials. It has been studied as an effect of personality traits, as an expectational effect, and from a physiological point of departure. Still it remains a medical riddle how something that is “nothing” can cause a measurable effect? In this paper I shall address this issue from a posthuman angle...

Comparison of efficacy of bupivacaine and fentanyl with bupivacaine and sufentanil for epidural labor analgesia

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Kalra Sumit

2010-01-01

Full Text Available Objectives: A study to compare the efficacy between fentanyl and sufentanil combined with low concentration (0.0625% of bupivacaine for epidural labor analgesia in laboring women. Materials and Methods: Fifty full term parturients received an initial bolus dose of a 10 ml solution containing 0.125% bupivacaine. The patients were randomly divided into two: group F received 0.0625% bupivacaine with 2.5 mcg/ml fentanyl and group S received 0.0625% bupivacaine with 0.25 mcg/ml sufentanil. Verbal analogue pain scores, need of supplementary/rescue boluses dose of bupivacaine consumed, mode of delivery, maternal satisfaction, and neonatal Apgar scores were recorded. No significant difference was observed between both groups. Results: Both the groups provided equivalent labor analgesia and maternal satisfaction. The chances of cesarean delivery were also not increased in any group. No difference in the cephalad extent of sensory analgesia, motor block or neonatal Apgar score were observed. Although mean pain scores throughout the labor and delivery were similar in both groups, more patients in fentanyl group required supplementary boluses though not statistically significant. Conclusion: We conclude that both 0.0625% bupivacaine-fentanyl (2.5 μg/ml and 0.0625% bupivacaine-sufentanil (0.25 μg/ml were equally effective by continuous epidural infusion in providing labor analgesia with hemodynamic stability achieving equivalent maternal satisfaction without serious maternal or fetal side effects. We found that sufentanil was 10 times more potent than fentanyl as an analgesic for continuous epidural labor analgesia.

Reduction of opioid withdrawal and potentiation of acute opioid analgesia by systemic AV411 (ibudilast).

Science.gov (United States)

Hutchinson, Mark R; Lewis, Susannah S; Coats, Benjamen D; Skyba, David A; Crysdale, Nicole Y; Berkelhammer, Debra L; Brzeski, Anita; Northcutt, Alexis; Vietz, Christine M; Judd, Charles M; Maier, Steven F; Watkins, Linda R; Johnson, Kirk W

2009-02-01

Morphine-induced glial proinflammatory responses have been documented to contribute to tolerance to opioid analgesia. Here, we examined whether drugs previously shown to suppress glial proinflammatory responses can alter other clinically relevant opioid effects; namely, withdrawal or acute analgesia. AV411 (ibudilast) and minocycline, drugs with distinct mechanisms of action that result in attenuation of glial proinflammatory responses, each reduced naloxone-precipitated withdrawal. Analysis of brain nuclei associated with opioid withdrawal revealed that morphine altered expression of glial activation markers, cytokines, chemokines, and a neurotrophic factor. AV411 attenuated many of these morphine-induced effects. AV411 also protected against spontaneous withdrawal-induced hyperactivity and weight loss recorded across a 12-day timecourse. Notably, in the spontaneous withdrawal study, AV411 treatment was delayed relative to the start of the morphine regimen so to also test whether AV411 could still be effective in the face of established morphine dependence, which it was. AV411 did not simply attenuate all opioid effects, as co-administering AV411 with morphine or oxycodone caused three-to-five-fold increases in acute analgesic potency, as revealed by leftward shifts in the analgesic dose response curves. Timecourse analyses revealed that plasma morphine levels were not altered by AV411, suggestive that potentiated analgesia was not simply due to prolongation of morphine exposure or increased plasma concentrations. These data support and extend similar potentiation of acute opioid analgesia by minocycline, again providing converging lines of evidence of glial involvement. Hence, suppression of glial proinflammatory responses can significantly reduce opioid withdrawal, while improving analgesia.

Frequency of colonization and isolated bacteria from the tip of epidural catheter implanted for postoperative analgesia.

Science.gov (United States)

Stabille, Débora Miranda Diogo; Diogo Filho, Augusto; Mandim, Beatriz Lemos da Silva; de Araújo, Lúcio Borges; Mesquita, Priscila Miranda Diogo; Jorge, Miguel Tanús

2015-01-01

The increased use of epidural analgesia with catheter leads to the need to demonstrate the safety of this method and know the incidence of catheter colonization, inserted postoperatively for epidural analgesia, and the bacteria responsible for this colonization. From November 2011 to April 2012, patients electively operated and maintained under epidural catheter for postoperative analgesia were evaluated. The catheter tip was collected for semiquantitative and qualitative microbiological analysis. Of 68 cultured catheters, six tips (8.8%) had positive cultures. No patient had superficial or deep infection. The mean duration of catheter use was 43.45 h (18-118) (p=0.0894). The type of surgery (contaminated or uncontaminated), physical status of patients, and surgical time showed no relation with the colonization of catheters. Microorganisms isolated from the catheter tip were Staphylococcus aureus, Pseudomonas aeruginosa and Sphingomonas paucimobilis. Postoperative epidural catheter analgesia, under these study conditions, was found to be low risk for bacterial colonization in patients at surgical wards. Copyright © 2014 Sociedade Brasileira de Anestesiologia. Published by Elsevier Editora Ltda. All rights reserved.

COMPARATIVE STUDY OF EPIDURAL FENTANYL AND FENTANYL PLUS MAGNESIUM SULPHATE FOR POSTOPERATIVE ANALGESIA

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Shiva

2015-11-01

Full Text Available AIMS AND OBJECTIVES Magnesium has antinociceptive effects in animal and human models of pain. It is found that the addition of Magnesium sulphate to postoperative Epidural infusion of Fentanyl may decrease the need for Fentanyl. We undertook a study to compare the duration of postoperative analgesia after Epidural Fentanyl and Epidural Fentanyl plus Magnesium sulphate administered postoperatively, along with side effects. MATERIALS AND METHODS 50 patients undergoing elective lower limb and abdominal surgeries were randomized into one of the two groups with 25 patients in each group. Combined Spinal Epidural Anaesthesia was used for all patients. Spinal anaesthesia with 2.5 cc of 0.5% Hyperbaric Bupivacaine was given. When sensory blockade regressed to L1, patients were given either 50 µg of Fentanyl (diluted to 6cc with normal saline, Group F or 50 µg of Fentanyl plus 50 mg Magnesium sulphate (diluted to 6cc with normal saline, Group FM. Parameters like blood pressure, pulse rate, respiratory rate and oxygen saturation were monitored, and other side effects were noted. Data were analysed by using Student t test and Chi-square/ Fisher Exact tests. RESULTS There was significant difference in duration of analgesia between Group F (107 min and Group FM (143 min. Hemodynamic parameters were stable in both the groups with minimal side effects. CONCLUSION Co-administration of Magnesium sulphate with Fentanyl for postoperative Epidural analgesia results in prolongation of Fentanyl analgesia without significant side-effects.

EPIDURAL ANALGESIA DURING LABOR Analgesia epidural para el trabajo de parto

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Juan Carlos Zafra Pedone

2008-12-01

Full Text Available Introduction: The labor pain affect to all pregnant woman and it has biochemical and physiological changes that affect to mother and fetus and interact with your normal evolution. Currently there are analgesic techniques to less effectively labor pain, to provide a high satisfaction level and supply clinical and laboratory beneficial outcomes. In own context these techniques are very low used. Objective: To describe the use of epidural analgesic procedures in a pregnancy woman group during labor at the Universitarian Hospital San Jose – Popayan, Colombia. Materials and methods: Case series design. We recollected information of patients from Obstetric service during two months of 2006. The patient’s information was recollected from medical history with an instrument that content variables related with the analgesic technique and labor. The analyses were performed using descriptive statistics Results: 41 pregnant woman with a mean age of 23,4 were included. 65,9% were nulliparous and 85,4% were term pregnancy. At the moment of dural puncture the dilation and EVA pain scale mode was 6 and 8 respectively. The latency mean was 14,1 minutes. 95,1% were require a booster applied in a mean of 80 minutes and 61% were required a second booster applied in a mean of 49 min after that. The way of termination of pregnancy was vaginal predominantly. Conclusions: The results of this study are congruent to reporting in the world literature. These conclusions support the effectiveness of epidural analgesia and its favorable benefit/risk relation to the control of labor pain. Introducción: El dolor asociado con el trabajo de parto afecta a todas las pacientes e involucra alteraciones que afectan a la madre y al feto e interactúan interfiriendo con su evolución normal. Actualmente disponemos de alternativas analgésicas peridurales que han demostrado controlar en forma efectiva el dolor, proporcionar un alto grado de satisfacción de las pacientes y proveer

The roles of acute and chronic pain in regression of sensory analgesia during continuous epidural bupivacaine infusion

DEFF Research Database (Denmark)

Mogensen, T; Scott, N B; Lund, Claus

1988-01-01

The purpose of this study was to investigate whether regression of sensory analgesia during constant epidural bupivacaine infusion was different in postoperative patients with acute pain than in patients with chronic nonsurgical pain. Sensory levels of analgesia (to pinprick) and pain (on a five......-point scale) were assessed hourly for 16 hours during continuous epidural infusion of 0.5% plain bupivacaine (8 ml/hr) in 12 patients with chronic nonsurgical pain and in 30 patients after major abdominal surgery performed under combined bupivacaine and halothane--N2O general anesthesia. No opiates were given....... If sensory analgesia decreased more than five segments from the initial level or if the pain score reached 2 (moderate pain), the patient was removed from the study. Initial levels of sensory analgesia after loading doses of 21.8 +/- 0.5 and 19.3 +/- 0.8 ml bupivacaine 0.5% were similar (T3.8 +/- 0.3 and T3...

Perioperative analgesia after intrathecal fentanyl and morphine or morphine alone for cesarean section: A randomized controlled study.

Science.gov (United States)

Weigl, Wojciech; Bieryło, Andrzej; Wielgus, Monika; Krzemień-Wiczyńska, Świetlana; Kołacz, Marcin; Dąbrowski, Michał J

2017-12-01

Intrathecal morphine is used in the postoperative management of pain after caesarean section (CS), but might not be optimal for intraoperative analgesia. We hypothesized that intrathecal fentanyl could supplement intraoperative analgesia when added to a local anesthetic and morphine without affecting management of postoperative pain. This prospective, randomized, double-blind, parallel-group study included 60 parturients scheduled for elective CS. Spinal anesthesia consisted of bupivacaine with either morphine 100 μg (M group), or fentanyl 25 μg and morphine 100 μg (FM group). The frequency of intraoperative pain and pethidine consumption in the 24 hours postoperatively was recorded. Fewer patients in the FM group required additional intraoperative analgesia (P fentanyl and morphine may provide better perioperative analgesia than morphine alone in CS and could be useful when the time from anesthesia to skin incision is short. However, an increase in PONV and possible acute spinal opioid tolerance after addition of intrathecal fentanyl warrants further investigation using lower doses of fentanyl.

ANAESTHESIA, POSTOPERATIVE ANALGESIA AND EARLY REHABILITATION FOR UPPER EXTREMITY BONE AND MAJOR JOINTS SURGERY

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A. V. Kurnosov

2011-01-01

Full Text Available A new method was developed to perform prolonged brachial plexus block with almost 100% effectiveness. It was also shown in 44 patients to be 33 % safer for local complications and 11,3 % safer for general complications than common used supraclavicular Winnie block (42 patients in control group, received opiates and NSAID for post-operative analgesia. This new method of analgesia allows effective rehabilitation after elbow arthroplasty to be started on the first day after the surgery.

Safety and efficacy of procedural sedation and analgesia (PSA ...

African Journals Online (AJOL)

Safety and efficacy of procedural sedation and analgesia (PSA) conducted by medical officers in a level 1 hospital in Cape Town. ... Respiratory complications were treated with simple airway manoeuvres; no patient required intubation or experienced respiratory problems after waking up. There was no significant difference ...

Epidural Labor Analgesia-Fentanyl Dose and Breastfeeding Success: A Randomized Clinical Trial.

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Lee, Amy I; McCarthy, Robert J; Toledo, Paloma; Jones, Mary Jane; White, Nancy; Wong, Cynthia A

2017-10-01

Breastfeeding is an important public health concern. High cumulative doses of epidural fentanyl administered for labor analgesia have been reported to be associated with early termination of breastfeeding. We tested the hypothesis that breastfeeding success is adversely influenced by the cumulative epidural fentanyl dose administered for labor analgesia. The study was a randomized, double-blind, controlled trial of parous women at greater than 38 weeks gestation who planned to breastfeed, had successfully breastfed a prior infant, and who received neuraxial labor analgesia. Participants were randomized to receive one of three epidural maintenance solutions for labor analgesia (bupivacaine 1 mg/ml, bupivacaine 0.8 mg/ml with fentanyl 1 μg/ml, or bupivacaine 0.625 mg/ml with fentanyl 2 μg/ml). The primary outcome was the proportion of women breastfeeding at 6 weeks postpartum. Maternal and umbilical venous blood fentanyl and bupivacaine concentration at delivery were measured. A total of 345 women were randomized and 305 had complete data for analysis. The frequency of breastfeeding at 6 weeks was 97, 98, and 94% in the groups receiving epidural fentanyl 0, 1, and 2 μg/ml, respectively (P = 0.34). The cumulative fentanyl dose (difference: 37 μg [95% CI of the difference, -58 to 79 μg], P = 0.28) and maternal and umbilical cord venous fentanyl and bupivacaine concentrations did not differ between women who discontinued breastfeeding and those who were still breastfeeding at 6 weeks postpartum. Labor epidural solutions containing fentanyl concentrations as high as 2 μg/ml do not appear to influence breastfeeding rates at 6 weeks postpartum.

Maternal and foetal outcome after epidural labour analgesia in high-risk pregnancies

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Sukhen Samanta

2016-01-01

Full Text Available Background and Aims: Low concentration local anaesthetic improves uteroplacental blood flow in antenatal period and during labour in preeclampsia. We compared neonatal outcome after epidural ropivacaine plus fentanyl with intramuscular tramadol analgesia during labour in high-risk parturients with intrauterine growth restriction of mixed aetiology. Methods: Forty-eight parturients with sonographic evidence of foetal weight <1.5 kg were enrolled in this non-randomized, double-blinded prospective study. The epidural (E group received 0.15% ropivacaine 10 ml with 30 μg fentanyl incremental bolus followed by 7–15 ml 0.1% ropivacaine with 2 μg/ml fentanyl in continuous infusion titrated until visual analogue scale was three. Tramadol (T group received intramuscular tramadol 1 mg/kg as bolus as well as maintenance 4–6 hourly. Neonatal outcomes were measured with cord blood base deficit, pH, ionised calcium, sugar and Apgar score after delivery. Maternal satisfaction was also assessed by four point subjective score. Results: Baseline maternal demographics and neonatal birth weight were comparable. Neonatal cord blood pH, base deficit, sugar, and ionised calcium levels were significantly improved in the epidural group in comparison to the tramadol group. Maternal satisfaction (P = 0.0001 regarding labour analgesia in epidural group was expressed as excellent by 48%, good by 52% whereas it was fair in 75% and poor in 25% in the tramadol group. Better haemodynamic and pain scores were reported in the epidural group. Conclusion: Epidural labour analgesia with low concentration local anaesthetic is associated with less neonatal cord blood acidaemia, better sugar and ionised calcium levels. The analgesic efficacy and maternal satisfaction are also better with epidural labour analgesia.

Transversus abdominal plane block for postoperative analgesia: a systematic review and meta-analysis of randomized-controlled trials.

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Brogi, Etrusca; Kazan, Roy; Cyr, Shantale; Giunta, Francesco; Hemmerling, Thomas M

2016-10-01

The transversus abdominal plane (TAP) block has been described as an effective pain control technique after abdominal surgery. We performed a systematic review and meta-analysis of randomized-controlled trials (RCTs) to account for the increasing number of TAP block studies appearing in the literature. The primary outcome we examined was the effect of TAP block on the postoperative pain score at six, 12, and 24 hr. The secondary outcome was 24-hr morphine consumption. We searched the United States National Library of Medicine database, the Excerpta Medica database, and the Cochrane Central Register of Controlled Clinical Studies and identified RCTs focusing on the analgesic efficacy of TAP block compared with a control group [i.e., placebo, epidural analgesia, intrathecal morphine (ITM), and ilioinguinal nerve block after abdominal surgery]. Meta-analyses were performed on postoperative pain scores at rest at six, 12, and 24 hr (visual analogue scale, 0-10) and on 24-hr opioid consumption. In the 51 trials identified, compared with placebo, TAP block reduced the VAS for pain at six hours by 1.4 (95% confidence interval [CI], -1.9 to -0.8; P consumption at 24 hr after surgery (mean difference, -14.7 mg; 95% CI, -18.4 to -11.0; P consumption in the TAP block group after gynecological surgery, appendectomy, inguinal surgery, bariatric surgery, and urological surgery. Nevertheless, separate analysis of the studies comparing ITM with TAP block revealed that ITM seemed to have a greater analgesic efficacy. The TAP block can play an important role in the management of pain after abdominal surgery by reducing both pain scores and 24-hr morphine consumption. It may have particular utility when neuraxial techniques or opioids are contraindicated.

Pain Management of Malignant Psoas Syndrome Under Epidural Analgesia During Palliative Radiotherapy.

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Ota, Takayo; Makihara, Masaru; Tsukuda, Hiroshi; Kajikawa, Ryuji; Inamori, Masayuki; Miyatake, Nozomi; Tanaka, Noriko; Tokunaga, Masahiro; Hasegawa, Yoshikazu; Tada, Takuhito; Fukuoka, Masahiro

2017-06-01

Malignant psoas syndrome is a rare malignant condition presenting as lumbosacral plexopathy and painful fixed flexion of the hip. Metastasis to the psoas muscle is observed, which damages the nerve bundles in the lumbosacral plexuses. The syndrome presents as refractory lower back pain with several other neurological symptoms. The pain is difficult to control because it is a mixture of nociceptive and neuropathic pain, which indicates that treatment requires a versatile approach. The authors report a case of severe back pain caused by metastasis to the psoas muscle of advanced gastric cancer in a patient who underwent palliative radiotherapy under epidural analgesia. Despite conventional analgesics and subcutaneous oxycodone, he had difficulties in maintaining supine position because of the back pain and had a problem to receive radiotherapy, which required him to stay still in the same position during the treatment. By epidural analgesia, he could remain in supine position and complete radiotherapy without increasing opioid administration. His back pain was improved after the radiotherapy. Epidural analgesia is an effective treatment choice for a patient who is unable to keep the position during palliative radiotherapy.

The effect of opioid receptor blockade on the neural processing of thermal stimuli.

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Eszter D Schoell

Full Text Available The endogenous opioid system represents one of the principal systems in the modulation of pain. This has been demonstrated in studies of placebo analgesia and stress-induced analgesia, where anti-nociceptive activity triggered by pain itself or by cognitive states is blocked by opioid antagonists. The aim of this study was to characterize the effect of opioid receptor blockade on the physiological processing of painful thermal stimulation in the absence of cognitive manipulation. We therefore measured BOLD (blood oxygen level dependent signal responses and intensity ratings to non-painful and painful thermal stimuli in a double-blind, cross-over design using the opioid receptor antagonist naloxone. On the behavioral level, we observed an increase in intensity ratings under naloxone due mainly to a difference in the non-painful stimuli. On the neural level, painful thermal stimulation was associated with a negative BOLD signal within the pregenual anterior cingulate cortex, and this deactivation was abolished by naloxone.

[Sedation and analgesia practices among Spanish neonatal intensive care units].

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Avila-Alvarez, A; Carbajal, R; Courtois, E; Pertega-Diaz, S; Muñiz-Garcia, J; Anand, K J S

2015-08-01

Pain management and sedation is a priority in neonatal intensive care units. A study was designed with the aim of determining current clinical practice as regards sedation and analgesia in neonatal intensive care units in Spain, as well as to identify factors associated with the use of sedative and analgesic drugs. A multicenter, observational, longitudinal and prospective study. Thirty neonatal units participated and included 468 neonates. Of these, 198 (42,3%) received sedatives or analgesics. A total of 19 different drugs were used during the study period, and the most used was fentanyl. Only fentanyl, midazolam, morphine and paracetamol were used in at least 20% of the neonates who received sedatives and/or analgesics. In infusions, 14 different drug prescriptions were used, with the most frequent being fentanyl and the combination of fentanyl and midazolam. The variables associated with receiving sedation and/or analgesia were, to have required invasive ventilation (P3 (P=.023; OR=2.26), the existence of pain evaluation guides in the unit (Pneonates admitted to intensive care units receive sedatives or analgesics. There is significant variation between Spanish neonatal units as regards sedation and analgesia prescribing. Our results provide evidence on the "state of the art", and could serve as the basis of preparing clinical practice guidelines at a national level. Copyright © 2015 Asociación Española de Pediatría. Published by Elsevier España, S.L.U. All rights reserved.

Randomized clinical trial of transversus abdominis plane block versus placebo control in live-donor nephrectomy.

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Hosgood, Sarah A; Thiyagarajan, Umasanker M; Nicholson, Harriet F L; Jeyapalan, Inthira; Nicholson, Michael L

2012-09-15

Laparoscopic surgery reduces pain after donor nephrectomy; however, most patients still require a significant amount of postoperative parenteral opiate analgesia. Therefore, there is a need to investigate techniques that might further reduce postoperative pain. This study assessed the safety and efficacy of using a transversus abdominis plane (TAP) block in a randomized, double-blind, placebo-controlled trial. Forty-six patients were analyzed in the trial and were randomized to undergo the TAP block procedure with either bupivacaine (n=24) or saline placebo (Control n=22) injected into the muscle plane. Prefilled syringes were dispensed with the group allocation concealed to maintain blinding. After surgery, the amount of morphine, level of pain, and measures of recovery were recorded. The amount of morphine used 6 hr after surgery was significantly lower in patients receiving TAP block with bupivacaine compared with the control (presented as mean [SD], 12.4 [8.4] vs. 21.2 [14.0] mg; P=0.015). However, the total amount of morphine used was similar in both groups 45.6 [31.4] vs. 52.7 [28.8] mg; P=0.771. Patients in the bupivacaine group experienced significantly less pain on postoperative days 1 (score, 19 [15] vs. 37 [20]; P=0.003) and 2 (score, 11 [10] vs. 19 [13]; P=0.031). Recovery and postoperative hospital stay were similar in both groups. There were no complications associated with the procedure. The TAP block procedure is beneficial in reducing postoperative pain and early morphine requirements in laparoscopic live-donor nephrectomy.

Painful procedures and analgesia in the NICU: what has changed in the medical perception and practice in a ten-year period?

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Prestes, Ana Claudia Yoshikumi; Balda, Rita de Cássia Xavier; Santos, Gianni Mara Silva dos; Rugolo, Ligia Maria Suppo de Souza; Bentlin, Maria Regina; Magalhães, Mauricio; Pachi, Paulo Roberto; Marba, Sergio Tadeu Martins; Caldas, Jamil Pedro de Siqueira; Guinsburg, Ruth

2016-01-01

To compare the use of analgesia versus neonatologists' perception regarding analgesic use in painful procedures in the years 2001, 2006, and 2011. This was a prospective cohort study of all newborns admitted to four university neonatal intensive care units during one month in 2001, 2006, and 2011. The frequency of analgesic prescription for painful procedures was evaluated. Of the 202 neonatologists, 188 answered a questionnaire giving their opinion on the intensity of pain during lumbar puncture, tracheal intubation, mechanical ventilation, and postoperative period using a 10-cm visual analogic scale (VAS; pain >3cm). For lumbar puncture, 12% (2001), 43% (2006), and 36% (2011) were performed using analgesia. Among the neonatologists, 40-50% reported VAS >3 for lumbar puncture in all study periods. For intubation, 30% received analgesia in the study periods, and 35% (2001), 55% (2006), and 73% (2011) of the neonatologists reported VAS >3 and would prescribe analgesia for this procedure. As for mechanical ventilation, 45% (2001), 64% (2006), and 48% (2011) of patient-days were under analgesia; 56% (2001), 57% (2006), and 26% (2011) of neonatologists reported VAS >3 and said they would use analgesia during mechanical ventilation. For the first three post-operative days, 37% (2001), 78% (2006), and 89% (2011) of the patients received analgesia and more than 90% of neonatologists reported VAS >3 for major surgeries. Despite an increase in the medical perception of neonatal pain and in analgesic use during painful procedures, the gap between clinical practice and neonatologist perception of analgesia need did not change during the ten-year period. Copyright © 2015 Sociedade Brasileira de Pediatria. Published by Elsevier Editora Ltda. All rights reserved.

Painful procedures and analgesia in the NICU: what has changed in the medical perception and practice in a ten-year period?

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Ana Claudia Yoshikumi Prestes

2016-02-01

Full Text Available ABSTRACT OBJECTIVE: To compare the use of analgesia versus neonatologists' perception regarding analgesic use in painful procedures in the years 2001, 2006, and 2011. METHODS: This was a prospective cohort study of all newborns admitted to four university neonatal intensive care units during one month in 2001, 2006, and 2011. The frequency of analgesic prescription for painful procedures was evaluated. Of the 202 neonatologists, 188 answered a questionnaire giving their opinion on the intensity of pain during lumbar puncture, tracheal intubation, mechanical ventilation, and postoperative period using a 10-cm visual analogic scale (VAS; pain >3 cm. RESULTS: For lumbar puncture, 12% (2001, 43% (2006, and 36% (2011 were performed using analgesia. Among the neonatologists, 40-50% reported VAS >3 for lumbar puncture in all study periods. For intubation, 30% received analgesia in the study periods, and 35% (2001, 55% (2006, and 73% (2011 of the neonatologists reported VAS >3 and would prescribe analgesia for this procedure. As for mechanical ventilation, 45% (2001, 64% (2006, and 48% (2011 of patient-days were under analgesia; 56% (2001, 57% (2006, and 26% (2011 of neonatologists reported VAS >3 and said they would use analgesia during mechanical ventilation. For the first three post-operative days, 37% (2001, 78% (2006, and 89% (2011 of the patients received analgesia and more than 90% of neonatologists reported VAS >3 for major surgeries. CONCLUSIONS: Despite an increase in the medical perception of neonatal pain and in analgesic use during painful procedures, the gap between clinical practice and neonatologist perception of analgesia need did not change during the ten-year period.

Clonidine as an adjunct to intravenous regional anesthesia: A randomized, double-blind, placebo-controlled dose ranging study

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Clarence S Ivie

2011-01-01

Full Text Available Background : The addition of clonidine to lidocaine intravenous regional anesthesia (IVRA has been previously reported to improve postoperative analgesia in patients undergoing upper extremity surgery. Our objective was to perform a dose ranging study in order to determine the optimal dose of clonidine used with lidocaine in IVRA. Design & Setting : We performed a double-blinded randomized placebo-controlled study with 60 patients scheduled for elective endoscopic carpal tunnel release under IVRA with 50 ml lidocaine 0.5%. University-affiliated outpatient surgery center. Data collected in operating rooms, recovery room, and by telephone after discharge from surgery center. Materials & Methods : Sixty adult ASA I or II patients undergoing outpatient endoscopic carpal tunnel release under intravenous regional anesthesia.Patients were randomized into five study groups receiving different doses of clonidine in addition to 50 ml 0.5% lidocaine in their IVRA. Group A received 0 mcg/kg, group B 0.25 mcg/kg, group C 0.5 mcg/kg, group D 1.0 mcg/kg and group E 1.5 mcg/kg of clonidine.Intraoperative fentanyl, recovery room pain scores, time to first postsurgical analgesic, total number of acetaminophen/codeine tablets consumed postsurgery, incidence of sedation, hypotension and bradycardia. Results & Conclusions : There was no benefit from any dose of clonidine compared to placebo. There were no clonidine-related side effects seen within the dose range studied. In short duration minor hand surgery, the addition of clonidine to lidocaine-based intravenous regional anesthesia provides no measurable benefit.

Placebo Response is Driven by UCS Revaluation: Evidence, Neurophysiological Consequences and a Quantitative Model.

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Puviani, Luca; Rama, Sidita

2016-07-20

Despite growing scientific interest in the placebo effect and increasing understanding of neurobiological mechanisms, theoretical modeling of the placebo response remains poorly developed. The most extensively accepted theories are expectation and conditioning, involving both conscious and unconscious information processing. However, it is not completely understood how these mechanisms can shape the placebo response. We focus here on neural processes which can account for key properties of the response to substance intake. It is shown that placebo response can be conceptualized as a reaction of a distributed neural system within the central nervous system. Such a reaction represents an integrated component of the response to open substance administration (or to substance intake) and is updated through "unconditioned stimulus (UCS) revaluation learning". The analysis leads to a theorem, which proves the existence of two distinct quantities coded within the brain, these are the expected or prediction outcome and the reactive response. We show that the reactive response is updated automatically by implicit revaluation learning, while the expected outcome can also be modulated through conscious information processing. Conceptualizing the response to substance intake in terms of UCS revaluation learning leads to the theoretical formulation of a potential neuropharmacological treatment for increasing unlimitedly the effectiveness of a given drug.

Antenatal education for childbirth-epidural analgesia.

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Cutajar, Lisa; Cyna, Allan M

2018-05-07

The language structures used by antenatal educators have not been previously researched in the context of antenatal childbirth classes. Epidural analgesia for labour is a common, and a frequently asked about, component of antenatal education for parents in hospitals providing maternity care. We aimed to identify the way information is described and presented by childbirth educators to assess content and determine which language structures such as metaphor, suggestion, information and storytelling are utilized. This observational study of antenatal education was conducted at a single tertiary referral center for maternity care in Western Sydney, Australia. All three childbirth educators agreed to be video recorded whilst providing information to parents during antenatal classes. Audio data was subsequently transcribed and then analysed by two researchers, independently categorising the various language structures and types of information provided. For the purposes of the current study, data concerning a single topic was used for the analysis-'epidural analgesia for labour'. Language structures used were highly variable between educators, as was the content and time taken for the information being provided. Our findings represent a first attempt to identify baseline information used in the clinical setting of antenatal education in order to categories communication structures used. This study has identified areas for further improvements and consistency in the way educators provide information to parents and has important implications for future midwifery practice, education and research. Copyright © 2018 Elsevier Ltd. All rights reserved.

COMPARATIVE STUDY TO EVALUATE ANALGESIC EFFICACY OF CAUDAL MIDAZOLAM AND CLONIDINE POSTOPERATIVE ANALGESIA IN CHILDREN

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Ramalinga Raju A.V.S

2017-03-01

Full Text Available BACKGROUND Caudal epidural analgesia is one of the most popular regional techniques used in paediatric patients undergoing lower limb, anoperineal and abdominal surgical procedures for postoperative pain relief. The aim of postoperative pain relief is to provide subjective comfort and inhibit trauma-induced nociceptive impulses to blunt autonomic and reflex responses to pain and subsequently to enhance the restoration of function. Caudal epidural analgesia though practiced widely is of short duration even when used with long-acting local anaesthetics. MATERIALS AND METHODS Children of either sex undergoing elective hernia or hydrocele surgery within in the age group of 2-8 years belonging to ASA I and II were included in the study. Informed consent was obtained from the parents before procedure. RESULTS The duration of analgesia in the study group was 10.14 ± 4.69 hrs. and 6.83 ± 0.79 hrs. in the clonidine group and midazolam group. Duration of analgesia in clonidine group was significantly longer when compared to with midazolam group with a p value of <0.05. Sedation Score- There was decrease in heart rate and mean arterial pressure from baseline, but these were under allowable limits of 20%. The patient had pain scores of less than 8 for first 6-8 hrs. The patients were well sedated and were easily arousable. CONCLUSION We conclude that in our study we found that clonidine 8 μg/kg provided good analgesia for a longer duration when compared with midazolam. Clonidine also provided good sedation with minimal haemodynamic variations. This is in agreement with studies conducted to know haemodynamic stability with higher doses of clonidine.

Analgesia induced by morphine microinjected into the nucleus raphe magnus: effects on tonic pain.

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Dualé, Christian; Sierralta, Fernando; Dallel, Radhouane

2007-07-01

One of the possible sites of action of the analgesic effect of morphine is the Nucleus Raphe Magnus, as morphine injected into this structure induces analgesia in transient pain models. In order to test if morphine in the Nucleus Raphe Magnus is also analgesic in a tonic pain model, 5 microg of morphine or saline (control) were microinjected into the Nucleus Raphe Magnus of the rat. Analgesic effects were assessed following nociceptive stimulation using transient heating of the tail (phasic pain) and subcutaneous orofacial injection of 1.5 % formalin (tonic pain). While morphine was strongly analgesic for the tail-flick response (p <0.0001 compared to control), analgesia on the response to formalin was also observed for both early (p = 0.007) and late responses (p = 0.02). However, the response to formalin was not completely blunted. These results suggest that the Nucleus Raphe Magnus is not the exclusive site of action of morphine-induced analgesia in clinical conditions.

Fluoroscopically guided tunneled trans-caudal epidural catheter technique for opioid-free neonatal epidural analgesia.

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Franklin, Andrew D; Hughes, Elisabeth M

2016-06-01

Epidural analgesia confers significant perioperative advantages to neonates undergoing surgical procedures but may be very technically challenging to place using a standard interlaminar loss-of-resistance to saline technique given the shallow depth of the epidural space. Thoracic epidural catheters placed via the caudal route may reduce the risk of direct neural injury from needle placement, but often pose higher risks of infection and/or improper positioning if placed without radiographic guidance. We present a detailed method of placing a fluoroscopically guided, tunneled transcaudal epidural catheter, which may reduce both of these risks. The accuracy and precision of this technique often provides adequate analgesia to allow for opioid-free epidural infusions as well as significant reductions in systemic opioids through the perioperative period. Opioid-free analgesia using a regional anesthetic technique allows for earlier extubation and reduced perioperative sedation, which may have a less deleterious neurocognitive effect on the developing brain of the neonate.

Clonidina e dexmedetomidina por via peridural para analgesia e sedação pós-operatória de colecistectomia Clonidina y dexmedetomidina por vía peridural para analgesia y sedación pós-operatoria de colecistectomía Epidural clonidine or dexmedetomidine for post-cholecystectomy analgesia and sedation

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Antônio Mauro Vieira

2004-08-01

Full Text Available JUSTIFICATIVA E OBJETIVOS: A clonidina e a dexmedetomidina são agonistas alfa2-adrenérgicos que, quando administrados por via peridural, possuem propriedades analgésicas e potencializam os efeitos dos anestésicos locais. A presente pesquisa objetivou avaliar a analgesia e a sedação produzidas pela clonidina ou dexmedetomidina associadas à ropivacaína, por via peridural, no pós-operatório de colecistectomia por via subcostal. MÉTODO: Participaram do estudo aleatório e duplamente encoberto 40 pacientes, de ambos os sexos, com idade variando de 18 a 50 anos, peso entre 50 e 100 kg, estado físico ASA I e II, submetidos à colecistectomia por via subcostal, os quais foram distribuídos em dois grupos: clonidina (GC, em que foi administrada clonidina (1 ml = 150 µg associada à ropivacaína a 0,75% (20 ml por via peridural; dexmedetomidina (GD, em que foi injetada dexmedetomidina (2 µg.kg-1 associada à ropivacaína a 0,75% (20 ml por via peridural. A analgesia e a sedação foram observadas 2, 6 e 24 horas após o término da anestesia. RESULTADOS: Ocorreu sedação depois de 2 e 6 horas em ambos os grupos, sendo que houve diferença estatística significante entre os tempos de 2 e 6 horas no grupo dexmedetomidina. Houve analgesia em ambos os grupos, especialmente depois de 2 e 6 horas. Foi detectada diferença estatística significante entre os tempos de 2, 6 e 24 horas no grupo dexmedetomidina; no grupo clonidina essa diferença estatística significante foi observada entre os tempos de 2 e 6 horas e entre 2 e 24 horas. CONCLUSÕES: Os resultados permitiram concluir que a clonidina ou a dexmedetomidina associadas à ropivacaína a 0,75% asseguraram analgesia e sedação nos tempos de observação de 2 e 6 horas após o término da anestesia, nos pacientes submetidos à colecistectomia por via subcostal e que a clonidina promove analgesia mais prolongada.JUSTIFICATIVA Y OBJETIVOS: La clonidina y la dexmedetomidina son agonistas alfa2

Palliative sedation and analgesia in the terminally ill children. Report of two cases and review of the literature

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Velasco Pérez Georgina

2014-07-01

Full Text Available We present the case of two children with cancer in the final stage of life, we describe the treatment given in this phase based on palliative sedation and analgesia to provide comfort to the patients and to offer calm to their relatives. We reviewed the literature information on support of sedation and analgesia at this stage of life, and the use of drugs such as midazolam and morphine. With the information provided in this article we expect physicians to convince themselves that opportune sedation and analgesia are useful and beneficial at the terminal stage of life.

Analgesia and anesthesia for neonates : Study design and ethical issues

NARCIS (Netherlands)

Anand, KJS; Aranda, JV; Berde, CB; Buckman, S; Capparelli, EV; Carlo, WA; Hummel, P; Lantos, P; Johnston, CC; Lehr, VT; Lynn, AM; Oberlander, TF; Raju, TNK; Soriano, SG; Taddio, A; Walco, GA; Maxwell, L.G.

Objective: The purpose of this article is to summarize the clinical, methodologic, and ethical considerations for researchers interested in designing future trials in neonatal analgesia and anesthesia, hopefully stimulating additional research in this field. Methods: The MEDLINE, PubMed, EMBASE, and

Caudal block and emergence delirium in pediatric patients: Is it analgesia or sedation?

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Aparna Sinha

2012-01-01

Full Text Available Background: Emergence delirium (ED although a short-lived and self-limiting phenomenon, makes a child prone to injury in the immediate postoperative period and hence is a cause of concern not only to the pediatric anesthesiologist, surgeons, and post anesthesia care unit staff but also amongst parents. Additional medication to quieten the child offsets the potential benefits of rapid emergence and delays recovery in day care settings. There is conflicting evidence of influence of analgesia and sedation following anesthesia on emergence agitation. We hypothesized that an anesthetic technique which improves analgesia and prolongs emergence time will reduce the incidence of ED. We selected ketamine as adjuvant to caudal block for this purpose. Methods: This randomized, double blind prospective study was performed in 150 premedicated children ASA I, II, aged 2 to 8 years who were randomly assigned to either group B (caudal with bupivacaine, BK (bupivacaine and ketamine, or NC (no caudal, soon after LMA placement. Recovery characteristics and complications were recorded. Results: Emergence time, duration of pain relief, and Pediatric Anesthesia Emergence Delirium (PAED scores were significantly higher in the NC group (P<0.05. Duration of analgesia and emergence time were significantly more in group BK than groups B and NC. However, the discharge readiness was comparable between all groups. No patient in BK group required to be given any medication to treat ED. Conclusion: Emergence time as well as duration of analgesia have significant influence on incidence of emergence delirium. Ketamine, as caudal adjuvant is a promising agent to protect against ED in children, following sevoflurane anesthesia.

Randomized comparison of effectiveness of unimodal opioid analgesia with multimodal analgesia in post–cesarean section pain management

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Adeniji AO

2013-05-01

Full Text Available Adetunji Oladeni Adeniji,1 Oluseyi Olaboyede A Atanda21Department of Obstetrics and Gynaecology, Ladoke Akintola University of Technology, Ogbomoso, Nigeria; 2Department of Obstetrics and Gynaecology, Ladoke Akintola University of Technology Teaching Hospital, Osogbo, NigeriaBackground: Postoperative pain leads to patient discomfort, decreased level of satisfaction, prolonged recovery, and higher health costs. Acute pain control therefore improves the overall quality of life in patients undergoing cesarean section. Pain relief is a fundamental human right, but there is no gold standard for post–cesarean section pain management.Objective: To compare the efficacy of pentazocine and tramadol used in unimodal and multimodal (in combination with piroxicam approach, in the management of post–cesarean section pain.Materials and methods: This study employed a random allocation design to compare the effectiveness of intramuscular pentazocine (60 mg or tramadol (100 mg as single analgesic agent and in combination with daily intramuscular piroxicam 20 mg, for the management of post–cesarean section pain during the immediate 12 hours after surgery. The primary outcome measure was control of postoperative pain, while the secondary outcome measures were the analgesic agent onset of action, duration of action, patient satisfaction, and maternal and neonatal adverse outcomes. Data obtained were entered into a predesigned sheet and analyzed with the Statistical Package for Social Sciences version 17. Means ± standard deviation (SD were calculated for the quantitative variables, and the difference between two independent groups was compared using unpaired Student's t-test. The level of significance was set at 0.05.Results: A total of 120 patients were equally and randomly allocated to four study groups – two that received unimodal analgesia (the pentazocine group and the tramadol group and two that received multimodal analgesia (the pentazocine

Epidural Labor Analgesia and Maternal Fever.

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Sharpe, Emily E; Arendt, Katherine W

2017-06-01

Women receiving an epidural for labor analgesia are at increased risk for intrapartum fever. This relationship has been supported by observational, before and after, and randomized controlled trials. The etiology is not well understood but is likely a result of noninfectious inflammation as studies have found women with fever have higher levels of inflammatory markers. Maternal pyrexia may change obstetric management and women are more likely to receive antibiotics or undergo cesarean delivery. Maternal pyrexia is associated with adverse neonatal outcomes. With these consequences, understanding and preventing maternal fever is imperative.

Introducing a patient-controlled analgesia-based acute pain relief ...

African Journals Online (AJOL)

The 10 months after the introduction of the first acute pain relief service (APRS) in southern Africa is described. Seven hundred patients were treated with morphine by means of patient-controlled analgesia (PCA), administered to patients after major surgery or extensive burns via the intravenous (IV) or subcutaneous (SC) ...

Periarticular infiltration for pain relief after total hip arthroplasty: a comparison with epidural and PCA analgesia.

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Pandazi, Ageliki; Kanellopoulos, Ilias; Kalimeris, Konstantinos; Batistaki, Chrysanthi; Nikolakopoulos, Nikolaos; Matsota, Paraskevi; Babis, George C; Kostopanagiotou, Georgia

2013-11-01

Epidural and intravenous patient-controlled analgesia (PCA) are established methods for pain relief after total hip arthroplasty (THA). Periarticular infiltration is an alternative method that is gaining ground due to its simplicity and safety. Our study aims to assess the efficacy of periarticular infiltration in pain relief after THA. Sixty-three patients undergoing THA under spinal anaesthesia were randomly assigned to receive postoperative analgesia with continuous epidural infusion with ropivacaine (epidural group), intraoperative periarticular infiltration with ropivacaine, clonidine, morphine, epinephrine and corticosteroids (infiltration group) or PCA with morphine (PCA group). PCA morphine provided rescue analgesia in all groups. We recorded morphine consumption, visual analog scale (VAS) scores at rest and movement, blood loss from wound drainage, mean arterial pressure (MAP) and adverse effects at 1, 6, 12, 24 h postoperatively. Morphine consumption at all time points, VAS scores at rest, 6, 12 and 24 h and at movement, 6 and 12 h postoperatively were lower in infiltration group compared to PCA group (p PCA group (p PCA with morphine after THA, providing better pain relief and lower opioid consumption postoperatively. Infiltration seems to be equally effective to epidural analgesia without having the potential side effects of the latter.

Patient-controlled analgesia with remifentanil versus alternative parenteral methods for pain management in labour.

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Weibel, Stephanie; Jelting, Yvonne; Afshari, Arash; Pace, Nathan Leon; Eberhart, Leopold Hj; Jokinen, Johanna; Artmann, Thorsten; Kranke, Peter

2017-04-13

Multiple analgesic strategies for pain relief during labour are available. Recently remifentanil, a short-acting opioid, has recently been used as an alternative analgesic due to its unique pharmacological properties. To systematically assess the effectiveness of remifentanil intravenous patient-controlled analgesia (PCA) for labour pain, along with any potential harms to the mother and the newborn. We searched the Cochrane Pregnancy and Childbirth Group's Trials Register (9 December 2015), ClinicalTrials.gov, the WHO International Clinical Trials Registry Platform (ICTRP), handsearched congress abstracts (November 2015), and reference lists of retrieved studies. Randomised controlled trials (RCTs) and cluster-randomised trials comparing remifentanil (PCA) with another opioid (intravenous (IV)/intramuscular (IM)), or with another opioid (PCA), or with epidural analgesia, or with remifentanil (continuous IV), or with remifentanil (PCA, different regimen), or with inhalational analgesia, or with placebo/no treatment in all women in labour including high-risk groups with planned vaginal delivery. Two review authors independently assessed trials for inclusion, extracted data, and appraised study quality.We contacted study authors for additional information other than incomplete outcome data. We performed random-effects meta-analysis.To reduce the risk of random error in meta-analysis we performed trial sequential analysis. We included total zero event trials and used a constant continuity correction of 0.01 (ccc 0.01) for meta-analysis. We applied the Grades of Recommendation, Assessment, Development, and Evaluation (GRADE) approach to assess the quality of evidence. Twenty RCTs with 3569 women were included. Of those, 10 trials (2983 participants) compared remifentanil (PCA) to an epidural, four trials (216 participants) to another opioid (IV/IM), three trials (215 participants) to another opioid (PCA), two trials (135 participants) to remifentanil (continuous IV

[Frequency of colonization and isolated bacteria from the tip of the epidural catheter implanted for postoperative analgesia].

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Stabille, Débora Miranda Diogo; Filho, Augusto Diogo; Mandim, Beatriz Lemos da Silva; Araújo, Lúcio Borges de; Mesquita, Priscila Miranda Diogo; Jorge, Miguel Tanús

2015-01-01

The increased use of epidural analgesia with catheter leads to the need to demonstrate the safety of this method and know the incidence of catheter colonization, inserted postoperatively for epidural analgesia, and the bacteria responsible for this colonization. From November 2011 to April 2012, patients electively operated and maintained under epidural catheter for postoperative analgesia were evaluated. The catheter tip was collected for semiquantitative and qualitative microbiological analysis. Of 68 cultured catheters, six tips (8.8%) had positive cultures. No patient had superficial or deep infection. The mean duration of catheter use was 43.45hours (18-118) (p=0.0894). The type of surgery (contaminated or uncontaminated), physical status of patients, and surgical time showed no relation with the colonization of catheters. Microorganisms isolated from the catheter tip were Staphylococcus aureus, Pseudomonas aeruginosa and Sphingomonas paucimobilis. Postoperative epidural catheter analgesia, under this study conditions, was found to be low risk for bacterial colonization in patients at surgical wards. Copyright © 2014 Sociedade Brasileira de Anestesiologia. Publicado por Elsevier Editora Ltda. All rights reserved.

Role of wound instillation with bupivacaine through surgical drains for postoperative analgesia in modified radical mastectomy

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Nirmala Jonnavithula

2015-01-01

Full Text Available Background and Aims: Modified Radical Mastectomy (MRM is the commonly used surgical procedure for operable breast cancer, which involves extensive tissue dissection. Therefore, wound instillation with local anaesthetic may provide better postoperative analgesia than infiltration along the line of incision. We hypothesised that instillation of bupivacaine through chest and axillary drains into the wound may provide postoperative analgesia. Methods: In this prospective randomised controlled study 60 patients aged 45-60 years were divided into three groups. All patients were administered general anaesthesia. At the end of the surgical procedure, axillary and chest wall drains were placed before closure. Group C was the control with no instillation; Group S received 40 ml normal saline, 20 ml through each drain; and Group B received 40 ml of 0.25% bupivacaine and the drains were clamped for 10 min. After extubation, pain score for both static and dynamic pain was evaluated using visual analog scale and then 4 th hourly till 24 h. Rescue analgesia was injection tramadol, if the pain score exceeds 4. Statistical analysis was performed using SPSS version 13. Results : There was a significant difference in the cumulative analgesic requirement and the number of analgesic demands between the groups (P: 0.000. The mean duration of analgesia in the bupivacaine group was 14.6 h, 10.3 in the saline group and 4.3 h in the control group. Conclusion : Wound instillation with local anaesthetics is a simple and effective means of providing good analgesia without any major side-effects.

Pharmacodynamic effects of steady-state fingolimod on antibody response in healthy volunteers: a 4-week, randomized, placebo-controlled, parallel-group, multiple-dose study.

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Boulton, Craig; Meiser, Karin; David, Olivier J; Schmouder, Robert

2012-12-01

Fingolimod, a first-in-class oral sphingosine 1-phosphate receptor (S1PR) modulator, is approved in many countries for relapsing-remitting multiple sclerosis, at a once-daily 0.5-mg dose. A reduction in peripheral lymphocyte count is an expected consequence of the fingolimod mechanism of S1PR modulation. The authors investigated if this pharmacodynamic effect impacts humoral and cellular immunogenicity. In this double-blind, parallel-group, 4-week study, 72 healthy volunteers were randomized to steady state, fingolimod 0.5 mg, 1.25 mg, or to placebo. The authors compared T-cell dependent and independent responses to the neoantigens, keyhole limpet hemocyanin (KLH), and pneumococcal polysaccharides vaccine (PPV-23), respectively, and additionally recall antigen response (tetanus toxoid [TT]) and delayed-type hypersensitivity (DTH) to KLH, TT, and Candida albicans. Fingolimod caused mild to moderate decreases in anti-KLH and anti-PPV-23 IgG and IgM levels versus placebo. Responder rates were identical between placebo and 0.5-mg groups for anti-KLH IgG (both > 90%) and comparable for anti-PPV-23 IgG (55% and 41%, respectively). Fingolimod did not affect anti-TT immunogenicity, and DTH response did not differ between placebo and fingolimod 0.5-mg groups. Expectedly, lymphocyte count reduced substantially in the fingolimod groups versus placebo but reversed by study end. Fingolimod was well tolerated, and the observed safety profile was consistent with previous reports.

Mood Predicts Response to Placebo CPAP

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Carl J. Stepnowsky

2012-01-01

Full Text Available Study Objectives. Continuous positive airway pressure (CPAP therapy is efficacious for treating obstructive sleep apnea (OSA, but recent studies with placebo CPAP (CPAP administered at subtherapeutic pressure have revealed nonspecific (or placebo responses to CPAP treatment. This study examined baseline psychological factors associated with beneficial effects from placebo CPAP treatment. Participants. Twenty-five participants were studied with polysomnography at baseline and after treatment with placebo CPAP. Design. Participants were randomized to either CPAP treatment or placebo CPAP. Baseline mood was assessed with the Profile of Mood States (POMS. Total mood disturbance (POMS-Total was obtained by summing the six POMS subscale scores, with Vigor weighted negatively. The dependent variable was changed in apnea-hypopnea index (ΔAHI, calculated by subtracting pre- from post-CPAP AHI. Negative values implied improvement. Hierarchical regression analysis was performed, with pre-CPAP AHI added as a covariate to control for baseline OSA severity. Results. Baseline emotional distress predicted the drop in AHI in response to placebo CPAP. Highly distressed patients showed greater placebo response, with a 34% drop (i.e., improvement in AHI. Conclusion. These findings underscore the importance of placebo-controlled studies of CPAP treatment. Whereas such trials are routinely included in drug trials, this paper argues for their importance even in mechanical-oriented sleep interventions.

Parameter Optimization Analysis of Prolonged Analgesia Effect of tDCS on Neuropathic Pain Rats

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Wen, Hui-Zhong; Gao, Shi-Hao; Zhao, Yan-Dong; He, Wen-Juan; Tian, Xue-Long; Ruan, Huai-Zhen

2017-01-01

Background: Transcranial direct current stimulation (tDCS) is widely used to treat human nerve disorders and neuropathic pain by modulating the excitability of cortex. The effectiveness of tDCS is influenced by its stimulation parameters, but there have been no systematic studies to help guide the selection of different parameters. Objective: This study aims to assess the effects of tDCS of primary motor cortex (M1) on chronic neuropathic pain in rats and to test for the optimal parameter combinations for analgesia. Methods: Using the chronic neuropathic pain models of chronic constriction injury (CCI), we measured pain thresholds before and after anodal-tDCS (A-tDCS) using different parameter conditions, including stimulation intensity, stimulation time, intervention time and electrode located (ipsilateral or contralateral M1 of the ligated paw on male/female CCI models). Results: Following the application of A-tDCS over M1, we observed that the antinociceptive effects were depended on different parameters. First, we found that repetitive A-tDCS had a longer analgesic effect than single stimulus, and both ipsilateral-tDCS (ip-tDCS) and contralateral-tDCS (con-tDCS) produce a long-lasting analgesic effect on neuropathic pain. Second, the antinociceptive effects were intensity-dependent and time-dependent, high intensities worked better than low intensities and long stimulus durations worked better than short stimulus durations. Third, timing of the intervention after injury affected the stimulation outcome, early use of tDCS was an effective method to prevent the development of pain, and more frequent intervention induced more analgesia in CCI rats, finally, similar antinociceptive effects of con- and ip-tDCS were observed in both sexes of CCI rats. Conclusion: Optimized protocols of tDCS for treating antinociceptive effects were developed. These findings should be taken into consideration when using tDCS to produce analgesic effects in clinical applications. PMID

[Benefits of epidural analgesia in major neonatal surgery].

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Gómez-Chacón, J; Encarnación, J; Couselo, M; Mangas, L; Domenech, A; Gutiérrez, C; García Sala, C

2012-07-01

The aim of this paper is to describe and evaluate the benefits of epidural anesthesia in major surgery neonatal. We have performed a matched case-control (2:1) study of patients undergoing neonatal major surgery (NMSs) who received intra-and postoperative epidural anesthesia (EA) and controls with conventional general anesthesia. The matching criteria were age, weight and baseline pathology. EA was administered by caudal puncture and epidural catheter placed with ultrasound support. Levobupivacaine was selected as anesthetic drug. The time to extubation, intestinal transit time, type of analgesia and complications were studied. This study is based on 11 cases (2 esophageal atresia, 2 diaphragmatic hernias, 1 necrotizing enterocolitis, 3 intestinal atresia, 2 anorectal malformation and 1 bladder exstrophy) and 22 controls. We observed statistically significant differences in time to extubation (95% CI OR 12 1.99 to 72.35; Chi2 p = 0.004, Mann U Whytney p = 0.013) and intestinal transit time (Mann Whitney U p analgesia. Therefore we believe that the intra-and postoperative EA helps improve postoperative management in neonates and should be preferred in centers where this technique is available.

Requests and usage of epidural analgesia in grand-grand multiparous and similar-aged women with lesser parity: prospective observational study.

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Ioscovich, Alexander; Fadeev, Angelika; Rivilis, Alina; Elstein, Deborah

2011-11-01

Epidural analgesia in older and multiparous women has been associated with risks. The aim of this study was to compare epidural analgesia use for labor/delivery in grand-grand multiparous women (GGMP; ≥10 births) relative to that in similar-aged women with lesser parity. This was a prospective observational study of advanced age gravida. All laboring women in a six-month period admitted to a tertiary Israeli center were included if they were advanced age (≥36 years old) with one to two previous births (Low parity; n=128) or four to five previous births (Medium parity; n=181), and all GGMP (any age; n=187). Primary outcome was comparison of requests for and use of epidural analgesia for labor/delivery. There were no significant differences across parity groups in percent of gravida requesting or receiving epidural analgesia (46.5-59.4%). Time from admission to epidural administration (range mean times: 168-187 min) and from advent of epidural to delivery (range mean times: 155-160 min) were comparable across parity groups. Use of other analgesia (5.8-8%) was not significantly different. Requests for and use of epidural analgesia was comparable in older gravida and was not correlated with parity. Mean times from presentation to epidural administration, mean cervical dilatation at epidural initiation, and mean time from performing of epidural to delivery were comparable across groups.

Safety and Efficacy of a Pharmacist-Managed Patient-Controlled Analgesia Service in Postsurgical Patients.

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McGonigal, Katrina H; Giuliano, Christopher A; Hurren, Jeff

2017-09-01

To compare the safety and efficacy of a pharmacist-managed patient-controlled analgesia (PCA) service with physician/midlevel provider-managed (standard) PCA services in postsurgical patients. This was a multicenter, retrospective cohort study performed at 3 major hospitals in the Detroit, Michigan, metropolitan area. Postsurgical patients from October 2012 to December 2013 were included. The primary outcome compared the pain area under the curve adjusted for time on PCA (AUC/T) of patients receiving pharmacist-managed PCA services vs. standard care, up to 72 hours after initiation of PCA. Secondary outcomes included initial opioid selection, programmed PCA settings, duration of PCA use, frequency of adjunct analgesia utilization, and frequency of breakthrough analgesia utilization. Safety outcomes were assessed as a composite safety endpoint and individually. Total pain AUC/T scores did not differ between the pharmacist-managed and standard-managed groups (3.25 vs. 3.25, respectively; P = 0.98). Adjunct pain medications were given with similar frequency in the 2 groups; however, significantly fewer patients required breakthrough pain medication in the pharmacist-managed group (11% vs. 36%, respectively; P patients requiring antiemetic use (46% vs. 32%; P = 0.04). A pharmacist-managed PCA service provided no difference in pain control compared to standard management. The requirement for breakthrough analgesia was decreased in the pharmacist group, while the need for antiemetic use was increased. Further research should be conducted to evaluate different PCA management strategies. © 2016 World Institute of Pain.

Efficacy of a sedo-analgesia protocol in pre-hospital trauma treatment

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Savino Occhionorelli

2013-06-01

Full Text Available Pre-hospital trauma treatment is an important situation in which pain should be appropriately assessed and treated, but there is a great lack of studies about it. Literature has widely pointed out that the underanalgesia problem is spread to all groups of patients. The objective of the study is to verify the efficacy of a sedation-analgesia protocol based on the use of NSAIDs, Fentanyl and Midazolam, for prehospital treatment of trauma patients. The protocol was tested in three Emergency Medical Services for a four month period, in which 30 patients were included in the study. Results evidenced a good management of both pain and anxiety in the majority of patients treated, with the achievement of analgesia target in 80% of the patients and sedation target in 100% of the patients.

Pectoral Fascial (PECS) I and II Blocks as Rescue Analgesia in a Patient Undergoing Minimally Invasive Cardiac Surgery.

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Yalamuri, Suraj; Klinger, Rebecca Y; Bullock, W Michael; Glower, Donald D; Bottiger, Brandi A; Gadsden, Jeffrey C

Patients undergoing minimally invasive cardiac surgery have the potential for significant pain from the thoracotomy site. We report the successful use of pectoral nerve block types I and II (Pecs I and II) as rescue analgesia in a patient undergoing minimally invasive mitral valve repair. In this case, a 78-year-old man, with no history of chronic pain, underwent mitral valve repair via right anterior thoracotomy for severe mitral regurgitation. After extubation, he complained of 10/10 pain at the incision site that was minimally responsive to intravenous opioids. He required supplemental oxygen because of poor pulmonary mechanics, with shallow breathing and splinting due to pain, and subsequent intensive care unit readmission. Ultrasound-guided Pecs I and II blocks were performed on the right side with 30 mL of 0.2% ropivacaine with 1:400,000 epinephrine. The blocks resulted in near-complete chest wall analgesia and improved pulmonary mechanics for approximately 24 hours. After the single-injection blocks regressed, a second set of blocks was performed with 266 mg of liposomal bupivacaine mixed with bupivacaine. This second set of blocks provided extended analgesia for an additional 48 hours. The patient was weaned rapidly from supplemental oxygen after the blocks because of improved analgesia. Pectoral nerve blocks have been described in the setting of breast surgery to provide chest wall analgesia. We report the first successful use of Pecs blocks to provide effective chest wall analgesia for a patient undergoing minimally invasive cardiac surgery with thoracotomy. We believe that these blocks may provide an important nonopioid option for the management of pain during recovery from minimally invasive cardiac surgery.

Role of Epidural Analgesia within an ERAS Program after Laparoscopic Colorectal Surgery: A Review and Meta-Analysis of Randomised Controlled Studies

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Giuseppe Borzellino

2016-01-01

Full Text Available Introduction. Epidural analgesia has been a cornerstone of any ERAS program for open colorectal surgery. With the improvements in anesthetic and analgesic techniques as well as the introduction of the laparoscopy for colorectal resection, the role of epidural analgesia has been questioned. The aim of the review was to assess through a meta-analysis the impact of epidural analgesia compared to other analgesic techniques for colorectal laparoscopic surgery within an ERAS program. Methods. Literature research was performed on PubMed, Embase, and the Cochrane Library. All randomised clinical trials that reported data on hospital stay, postoperative complications, and readmissions rates within an ERAS program with and without an epidural analgesia after a colorectal laparoscopic resection were included. Results. Five randomised clinical trials were selected and a total of 168 patients submitted to epidural analgesia were compared to 163 patients treated by an alternative analgesic technique. Pooled data show a longer hospital stay in the epidural group with a mean difference of 1.07 (95% CI 0.06–2.08 without any significant differences in postoperative complications and readmissions rates. Conclusion. Epidural analgesia does not seem to offer any additional clinical benefits to patients undergoing laparoscopic colorectal surgery within an ERAS program.

Quality of analgesia in physician-operated telemedical prehospital emergency care is comparable to physician-based prehospital care - a retrospective longitudinal study.

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Lenssen, Niklas; Krockauer, Andreas; Beckers, Stefan K; Rossaint, Rolf; Hirsch, Frederik; Brokmann, Jörg C; Bergrath, Sebastian

2017-05-08

Acute pain is a common reason for summoning emergency medical services (EMS). Yet in several countries the law restricts opioid-based analgesia administration to physicians. Telemedical support of paramedics is a novel approach to enable timely treatment under the guidance of a physician. In this retrospective observational study, conducted in the EMS of Aachen, Germany, the analgesic quality and occurrence of adverse events were compared between telemedically-supported paramedics (July-December, 2014) and a historical control group (conventional on-scene EMS physicians; January-March, 2014). pain (initial numerical rating scale (NRS) ≥5) and/or performed analgesia. Telemedically-assisted analgesia was performed in 149 patients; conventional analgesia in 199 control cases. Teleconsultation vs. Initial NRS scores were 8.0 ± 1.5 and 8.1 ± 1.7. Complete NRS documentation was carried out in 140/149 vs. 130/199 cases, p room arrival of 3.1 ± 1.7 vs. 3.3 ± 1.9 (p = 0.5229). No severe adverse events occurred in either group. Clinically relevant pain reduction was achieved in both groups. Thus, the concept of remote physician-based telemedically-delegated analgesia by paramedics is effective compared to analgesia by on-scene EMS physicians and safe.

Placebo effects in competitive sport: qualitative data.

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Beedie, Christopher J

2007-01-01

The paper examines the placebo effect in sports performance. The possibility that the placebo effect is a more common phenomenon than the quantity of published research would suggest is briefly addressed. It is suggested that the placebo control design often used in sports performance research masks any placebo effects and thus presents a false picture of the mechanisms underlying performance-enhancing interventions in the real world. An electronic survey was sent to 48 competitive, international and professional athletes. Questions related to the placebo effect in competitive sport. Thirty responses were received. Data indicate that the majority (97%) of respondents believe that the placebo effect can exert an influence on sports performance, and that a significant number (73%) have experienced what they defined as a placebo effect. Inductive content analysis reveals that these experiences fall into several categories such as explicit placebo effects, inadvertent false beliefs, ritual and reverse placebo effects. Furthermore, 10 respondents (33%) offer explanations as to the nature of the placebo effect. Again, inductive content analysis reveals that these explanations fall into several categories including deliberate changes in competitive strategy, belief/expectancy, faith in a third party, and marketing. Overall, responses support previous experimental research and anecdotal reports that have found a relationship between belief and sports performance. It is suggested that further research be structured to not simply control for the placebo effect, but to elucidate it. Key pointsA survey of 30 athletes revealed that 73% have experienced a placebo effect in sport.Athletes suggest several potential explanations for these effects.Findings support the idea that placebo effects might be common in sport.Researchers and practitioners should be aware of the possible impact of these effects on research findings and competitive performance.

Do antenatal education classes decrease use of epidural analgesia during labour? – a Danish RCT

DEFF Research Database (Denmark)

Brixval, Carina Sjöberg; Thygesen, Lau Caspar; Axelsen, Solveig Forberg

Background: Epidural analgesia is widely used as pain relief during labour but has negative side effects, such as prolonged labour and increased risk of obstetric interventions. Antenatal education in small groups may increase trust in own ability to cope at home in the early stages of labour...... of an antenatal education program in small classes on use of epidural analgesia. Methods: Data from the NEWBORN trial were used. A total of 1766 women from the Copenhagen area, Denmark were randomized to participate in either antenatal education in small groups or standard care. Data were analysed according...... on whether to implement the NEWBORN program in a clinical setting also depend upon the trial effect on psycho-social outcomes which will be analysed in near future. Main messages (max 200 anslag): 1. No effect of antenatal education in small groups on use of epidural analgesia as pain relief during labour...

Assessment of buprenorphine, carprofen, and their combination for postoperative analgesia in olive baboons (Papio anubis).

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Allison, Sarah O; Halliday, Lisa C; French, Jeffrey A; Novikov, Dmitri D; Fortman, Jeffrey D

2007-05-01

This study compared the efficacy of buprenorphine, carprofen, and a combination of the 2 analgesics in female baboons. Physiologic and behavioral parameters were assessed at baseline and postoperatively for 6 d by use of continuous noninvasive physiologic monitoring and twice-daily videotaping. Prior to surgery, all animals received a pre-emptive dose of either 0.01 mg/kg buprenorphine intramuscularly, 2.2 mg/kg carprofen intramuscularly, or a combination of 0.01 mg/kg buprenorphine and 2.2 mg/kg carprofen intramuscularly. All animals in the carprofen (n = 4) and buprenorphine+carprofen (n = 4) treatment groups appeared to have sufficient analgesia. Three of 4 animals in the buprenorphine group had adequate analgesia. The fourth animal had an elevated heart rate and spent less time standing during the postoperative period. In this study, the use of carprofen or a combination of carprofen plus buprenorphine provided more reliable postoperative analgesia than buprenorphine alone.

Maternal satisfaction as an outcome criterion in research on labor analgesia: data analysis from the recent literature.

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Dualé, Christian; Nicolas-Courbon, Aurélie; Gerbaud, Laurent; Lemery, Didier; Bonnin, Martine; Pereira, Bruno

2015-03-01

To investigate whether maternal satisfaction (MS) is taken into consideration as an outcome criterion in clinical research on analgesia for labor. A systematic review of articles reporting analgesia for labor from a panel of 17 influential journals was undertaken. A total of 116 articles were analyzed, including 282 within-study groups. The scope of MS, the type of outcome measure used, and the time of measurement were noted. Each available observation was assigned an ordinal value of MS (ordMS), according to data distribution. The factors influencing ordMS were identified by multivariable analysis. The methods used to assess MS were very variable, even within the different measurement tools reported. The weighted distribution of ordMS was 17.8%, 21.8%, 31.2%, and 29.3% for levels "poor," "fair," "good," and "excellent," respectively. In comparative studies, statistical differences for analgesia were related to statistical differences for MS (Pvalue was high (0.87). Power to detect a difference in MS between treatment groups was low in general, but it influenced reporting of a significant difference for MS (Pinitial cervical dilatation, and the within-study percentage of nulliparous women. The techniques alternative to epidural analgesia negatively influenced ordMS. A standard and validated tool to assess MS in clinical research on analgesia for labor is still to be developed. Power should be improved by acting on sample sizes or sensitivity of the outcome.

Placebo Effects and Informed Consent.

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Alfano, Mark

2015-01-01

The concepts of placebos and placebo effects refer to extremely diverse phenomena. I recommend dissolving the concepts of placebos and placebo effects into loosely related groups of specific mechanisms, including (potentially among others) expectation-fulfillment, classical conditioning, and attentional-somatic feedback loops. If this approach is on the right track, it has three main implications for the ethics of informed consent. First, because of the expectation-fulfillment mechanism, the process of informing cannot be considered independently from the potential effects of treatment. Obtaining informed consent influences the effects of treatment. This provides support for the authorized concealment and authorized deception paradigms, and perhaps even for outright deceptive placebo use. Second, doctors may easily fail to consider the potential benefits of conditioning, leading them to misjudge the trade-off between beneficence and autonomy. Third, how attentional-somatic feedback loops play out depends not only on the content of the informing process but also on its framing. This suggests a role for libertarian paternalism in clinical practice.

A randomized controlled trial of the effect of combined spinal-epidural analgesia on the success of external cephalic version for breech presentation.

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Sullivan, J T; Grobman, W A; Bauchat, J R; Scavone, B M; Grouper, S; McCarthy, R J; Wong, C A

2009-10-01

Improving the success of external cephalic version (ECV) for breech presentation may help avoid some cesarean deliveries. The results of randomized trials comparing the success of ECV with neuraxial analgesia compared to control are inconsistent. We hypothesized that combined spinal-epidural (CSE) analgesia would increase the success of ECV when compared with systemic opioid analgesia. Parturients with singleton breech presentation (n=96) were randomized to receive CSE analgesia with bupivacaine 2.5mg and fentanyl 15 microg (CSE group) or intravenous fentanyl 50 microg (SYS group) before ECV attempt. The primary outcome was ECV success. The success rate of ECV was 47% with CSE and 31% in the SYS group (P=0.14). Subsequent vaginal delivery was 36% for CSE and 25% for SYS (P=0.27). Median [IQR] visual analog pain scores (0-100mm scale) were lower with CSE (3 [0-12]) compared to SYS analgesia (36 [16 to 54]) (P<0.005) and patient satisfaction (0-10 scale) was higher (CSE 10 [9 to 10] versus SYS 7 [4 to 9]) (P<0.005). There were no differences in fetal heart rate patterns, but median time to return to fetal heart rate reactivity after analgesia was shorter with CSE (13 [IQR 9-21] min) compared to the SYS group (39 [IQR 23-51] min) (P=0.02). There was no difference in the rate of successful ECV or vaginal delivery with CSE compared to intravenous fentanyl analgesia. Pain scores were lower and satisfaction higher with CSE analgesia, and median time to fetal heart rate reactivity was shorter in the CSE group.

PLACEBO EFFECTS IN COMPETITIVE SPORT: QUALITATIVE DATA

Directory of Open Access Journals (Sweden)

Christopher J. Beedie

2007-03-01

Full Text Available The paper examines the placebo effect in sports performance. The possibility that the placebo effect is a more common phenomenon than the quantity of published research would suggest is briefly addressed. It is suggested that the placebo control design often used in sports performance research masks any placebo effects and thus presents a false picture of the mechanisms underlying performance-enhancing interventions in the real world. An electronic survey was sent to 48 competitive, international and professional athletes. Questions related to the placebo effect in competitive sport. Thirty responses were received. Data indicate that the majority (97% of respondents believe that the placebo effect can exert an influence on sports performance, and that a significant number (73% have experienced what they defined as a placebo effect. Inductive content analysis reveals that these experiences fall into several categories such as explicit placebo effects, inadvertent false beliefs, ritual and reverse placebo effects. Furthermore, 10 respondents (33% offer explanations as to the nature of the placebo effect. Again, inductive content analysis reveals that these explanations fall into several categories including deliberate changes in competitive strategy, belief/expectancy, faith in a third party, and marketing. Overall, responses support previous experimental research and anecdotal reports that have found a relationship between belief and sports performance. It is suggested that further research be structured to not simply control for the placebo effect, but to elucidate it

Thoracic epidural analgesia in donor hepatectomy: An analysis.

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Koul, Archna; Pant, Deepanjali; Rudravaram, Swetha; Sood, Jayashree

2018-02-01

The purpose of this study is to analyze whether supplementation of general anesthesia (GA) with thoracic epidural analgesia (TEA) for right lobe donor hepatectomy is a safe modality of pain relief in terms of changes in postoperative coagulation profile, incidence of epidural catheter-related complications, and timing of removal of epidural catheter. Retrospective analysis of the record of 104 patients who received TEA for right lobe donor hepatectomy was done. Platelet count, international normalized ratio, alanine aminotransferase, and aspartate aminotransferase were recorded postoperatively until the removal of the epidural catheter. The day of removal of the epidural catheter and visual analogue scale (VAS) scores were also recorded. Any complication encountered was documented. Intraoperatively, central venous pressure (CVP), hemodynamic variables, and volume of intravenous fluids infused were also noted. Statistical analysis was performed by using SPSS statistical package, version 17.0 (SPSS Inc. Chicago, IL). Continuous variables were presented as mean ± standard deviation. A total of 90% of patients had mean VAS scores between 1 and 4 in the postoperative period between days 1 and 5. None of the patients had a VAS score above 5. Although changes in coagulation status were encountered in all patients in the postoperative period, these changes were transient and did not persist beyond postoperative day (POD) 5. There was no delay in removal of the epidural catheter, and the majority of patients had the catheter removed by POD 4. There was no incidence of epidural hematoma. Aside from good intraoperative and postoperative analgesia, TEA in combination with balanced GA and fluid restriction enabled maintenance of low CVP and prevention of hepatic congestion. In conclusion, vigilant use of TEA appears to be safe during donor hepatectomy. Living liver donors should not be denied efficient analgesia for the fear of complications. Liver Transplantation 24 214

The early history of the placebo.

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Jütte, Robert

2013-04-01

In the late 18th century the term "placebo" became part of medical jargon. In contrast to the prevailing opinion that it was the Scottish physician and pharmacologist William Cullen (1710-1790) who introduced this expression into medical language in 1772, the credit must be given to another English physician, Alexander Sutherland (born before 1730 - died after 1773). The main reason for administering placebos in late 18th-century medical practice was to satisfy the patient's demand and his expectations. Another reason was obstinancy of the patient: the motivation behind such prescriptions may be summarized as prescribing inert drugs for the satisfaction of the patient's mind, and not with the view of producing any direct remedial effect. In most cases these 18th century physicians did not administer "pure" placebos but resorted to any kind of medicine which they thought simple, feeble, or altogether powerless, non-perturbing medicines. Today we make the distinction between pure placebos (substances with no pharmacological effect, e.g. sugar pills) and impure placebos (substances with pharmacological effect but not on the condition being treated). In the 18th century those physicians who prescribed placebo usually thought of drugs which were considered not very effective in the particular case, e.g. a mild ointment. At the same time, only very few brilliant minds came up with the ingenious idea of using inert substances as placebo. An alternative to milk sugar used as placebo in homeopathy was breadpills. Recent research suggests that expectancy is an integral part of the placebo effect. As early as 1775 the English bishop John Douglas (1721-1807) anticipated the findings of modern research on the placebo effect. Copyright © 2012 Elsevier Ltd. All rights reserved.

How placebos change the patient's brain.

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Benedetti, Fabrizio; Carlino, Elisa; Pollo, Antonella

2011-01-01

Although placebos have long been considered a nuisance in clinical research, today they represent an active and productive field of research and, because of the involvement of many mechanisms, the study of the placebo effect can actually be viewed as a melting pot of concepts and ideas for neuroscience. Indeed, there exists not a single but many placebo effects, with different mechanisms and in different systems, medical conditions, and therapeutic interventions. For example, brain mechanisms of expectation, anxiety, and reward are all involved, as well as a variety of learning phenomena, such as Pavlovian conditioning, cognitive, and social learning. There is also some experimental evidence of different genetic variants in placebo responsiveness. The most productive models to better understand the neurobiology of the placebo effect are pain and Parkinson's disease. In these medical conditions, the neural networks that are involved have been identified: that is, the opioidergic-cholecystokinergic-dopaminergic modulatory network in pain and part of the basal ganglia circuitry in Parkinson's disease. Important clinical implications emerge from these recent advances in placebo research. First, as the placebo effect is basically a psychosocial context effect, these data indicate that different social stimuli, such as words and rituals of the therapeutic act, may change the chemistry and circuitry of the patient's brain. Second, the mechanisms that are activated by placebos are the same as those activated by drugs, which suggests a cognitive/affective interference with drug action. Third, if prefrontal functioning is impaired, placebo responses are reduced or totally lacking, as occurs in dementia of the Alzheimer's type.

Opioid-Induced Glial Activation: Mechanisms of Activation and Implications for Opioid Analgesia, Dependence, and Reward

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Mark R. Hutchinson

2007-01-01

Full Text Available This review will introduce the concept of toll-like receptor (TLR–mediated glial activation as central to all of the following: neuropathic pain, compromised acute opioid analgesia, and unwanted opioid side effects (tolerance, dependence, and reward. Attenuation of glial activation has previously been demonstrated both to alleviate exaggerated pain states induced by experimental pain models and to reduce the development of opioid tolerance. Here we demonstrate that selective acute antagonism of TLR4 results in reversal of neuropathic pain as well as potentiation of opioid analgesia. Attenuating central nervous system glial activation was also found to reduce the development of opioid dependence, and opioid reward at a behavioral (conditioned place preference and neurochemical (nucleus accumbens microdialysis of morphine-induced elevations in dopamine level of analysis. Moreover, a novel antagonism of TLR4 by (+- and (˗-isomer opioid antagonists has now been characterized, and both antiallodynic and morphine analgesia potentiating activity shown. Opioid agonists were found to also possess TLR4 agonistic activity, predictive of glial activation. Targeting glial activation is a novel and as yet clinically unexploited method for treatment of neuropathic pain. Moreover, these data indicate that attenuation of glial activation, by general or selective TLR antagonistic mechanisms, may also be a clinical method for separating the beneficial (analgesia and unwanted (tolerance, dependence, and reward actions of opioids, thereby improving the safety and efficacy of their use.

Pharmacological therapy for analgesia and sedation in the newborn.

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Anand, K J S; Hall, R W

2006-11-01

Rapid advances have been made in the use of pharmacological analgesia and sedation for newborns requiring neonatal intensive care. Practical considerations for the use of systemic analgesics (opioids, non-steroidal anti-inflammatory agents, other drugs), local and topical anaesthetics, and sedative or anaesthetic agents (benzodiazepines, barbiturates, other drugs) are summarised using an evidence-based medicine approach, while avoiding mention of the underlying basic physiology or pharmacology. These developments have inspired more humane approaches to neonatal intensive care. Despite these advances, little is known about the clinical effectiveness, immediate toxicity, effects on special patient populations, or long-term effects after neonatal exposure to analgesics or sedatives. The desired or adverse effects of drug combinations, interactions with non-pharmacological interventions or use for specific conditions also remain unknown. Despite the huge gaps in our knowledge, preliminary evidence for the use of neonatal analgesia and sedation is available, but must be combined with a clear definition of clinical goals, continuous physiological monitoring, evaluation of side effects or tolerance, and consideration of long-term clinical outcomes.

Efficacy and tolerability of an undenatured type II collagen supplement in modulating knee osteoarthritis symptoms: a multicenter randomized, double-blind, placebo-controlled study.

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Lugo, James P; Saiyed, Zainulabedin M; Lane, Nancy E

2016-01-29

Undenatured type II collagen (UC-II) is a nutritional supplement derived from chicken sternum cartilage. The purpose of this study was to evaluate the efficacy and tolerability of UC-II for knee osteoarthritis (OA) pain and associated symptoms compared to placebo and to glucosamine hydrochloride plus chondroitin sulfate (GC). One hundred ninety one volunteers were randomized into three groups receiving a daily dose of UC-II (40 mg), GC (1500 mg G & 1200 mg C), or placebo for a 180-day period. The primary endpoint was the change in total Western Ontario McMaster Universities Osteoarthritis Index (WOMAC) from baseline through day 180 for the UC-II group versus placebo and GC. Secondary endpoints included the Lequesne Functional Index (LFI), the Visual Analog Scale (VAS) for pain and the WOMAC subscales. Modified intent-to-treat analysis were performed for all endpoints using analysis of covariance and mixed model repeated measures, while incremental area under the curve was calculated by the intent-to-treat method. At day 180, the UC-II group demonstrated a significant reduction in overall WOMAC score compared to placebo (p = 0.002) and GC (p = 0.04). Supplementation with UC-II also resulted in significant changes for all three WOMAC subscales: pain (p = 0.0003 vs. placebo; p = 0.016 vs. GC); stiffness (p = 0.004 vs. placebo; p = 0.044 vs. GC); physical function (p = 0.007 vs. placebo). Safety outcomes did not differ among the groups. UC-II improved knee joint symptoms in knee OA subjects and was well-tolerated. Additional studies that elucidate the mechanism for this supplement's actions are warranted. CTRI/2013/05/003663 ; CTRI/2013/02/003348 .

Ultrasound and nerve stimulator guided continuous femoral nerve block analgesia after total knee arthroplasty: a multicenter randomized controlled study

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Fen Wang

2015-02-01

Full Text Available BACKGROUND AND OBJECTIVES: Postoperative analgesia is crucial for early functional excise after total knee arthroplasty. To investigate the clinical efficacy of ultrasound and nerve stimulator guided continuous femoral nerve block analgesia after total knee arthroplasty. METHODS: 46 patients with ASA grade I-III who underwent total knee arthroplasty received postoperative analgesia from October 2012 to January 2013. In 22 patients, ultrasound and nerve stimulator guided continuous femoral nerve block were performed for analgesia (CFNB group; in 24 patients, epidural analgesia was done (PCEA group. The analgesic effects, side effects, articular recovery and complications were compared between two groups. RESULTS: At 6 h and 12 h after surgery, the knee pain score (VAS score during functional tests after active exercise and after passive excise in CFNB were significantly reduced when compared with PCEA group. The amount of parecoxib used in CFNB patients was significantly reduced when compared with PCEA group. At 48 h after surgery, the muscle strength grade in CFNB group was significantly higher, and the time to ambulatory activity was shorter than those in PCEA group. The incidence of nausea and vomiting in CFNB patients was significantly reduced when compared with PCEA group. CONCLUSION: Ultrasound and nerve stimulator guided continuous femoral nerve block provide better analgesia at 6 h and 12 h, demonstrated by RVAS and PVAS. The amount of parecoxib also reduces, the incidence of nausea and vomiting decreased, the influence on muscle strength is compromised and patients can perform ambulatory activity under this condition.

Pro con debate: the use of regional vs systemic analgesia for neonatal surgery.

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Bösenberg, Adrian T; Jöhr, Martin; Wolf, Andrew R

2011-12-01

In recent years the inclusion of regional techniques to pediatric anesthesia has transformed practice. Simple procedures such as caudal anesthesia with local anaesthetics can reduce the amounts of general anesthesia required and provide complete analgesia in the postoperative period while avoiding large amounts of opioid analgesia with potential side effects that can impair recovery. However, the application of central blocks (epidural and spinal local anesthesia) via catheters in the younger infant, neonate and even preterm neonate remains more controversial. The potential for such invasive maneuvers themselves to augment risk, can be argued to outweigh the benefits, others would argue that epidural analgesia can reduce the need for postoperative ventilation and that this not only facilitates surgery when intensive care facilities are limited, but also reduces cost in terms of PICU stay and recovery profile. Currently, opinions are divided and strongly held with some major units adopting this approach widely and others maintaining a more conservative stance to anesthesia for major neonatal surgery. In this pro-con debate the evidence base is examined, supplemented with expert opinion to try to provide a balanced overall view. © 2011 Blackwell Publishing Ltd.

Semiotics and the placebo effect.

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Miller, Franklin G; Colloca, Luana

2010-01-01

Despite substantial progress in elucidating its neurobiological mechanisms, theoretical understanding of the placebo effect is poorly developed. Application of the semiotic theory developed by the American philosopher Charles Peirce offers a promising account of placebo effects as involving the apprehension and response to signs. The semiotic approach dovetails with the various psychological mechanisms invoked to account for placebo effects, such as conditioning and expectation, and bridges the biological and cultural dimensions of this fascinating phenomenon.

Improvement of Morphine-Mediated Analgesia by Inhibition of β-Arrestin 2 Expression in Mice Periaqueductal Gray Matter

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Li, Yuting; Liu, Xing; Liu, Chang; Kang, Jiuhong; Yang, Jingyu; Pei, Gang; Wu, Chunfu

2009-01-01

Morphine is a well-known μ-opioid receptor (MOR) agonist and an efficient analgesic, but its long-term use inevitably leads to drug addiction and tolerance. Here, we show that specific inhibition of β-arrestin2 with its siRNA lentivirus microinjected in mice periaqueductal gray matter (PAG) significantly improved both acute and chronic morphine analgesia and delayed the tolerance in the hotplate test. The specific effect of β-arrestin2 was proven by overexpression or knockdown of its homology β-arrestin1 in PAG, which showed no significant effects on morphine analgesia. These findings suggest that specific siRNA targeting β-arrestin2 may constitute a new approach to morphine therapy and other MOR agonist-mediated analgesia and tolerance. PMID:19399231

Comparison of morphine and carprofen administered alone or in combination for analgesia in dogs undergoing ovariohysterectomy.

Science.gov (United States)

Dzikiti, T B; Joubert, K E; Venter, L J; Dzikiti, L N

2006-09-01

In this study the analgesic efficacy of the pure agonistic opioid morphine and the cyclo-oxygenase type-2-selective carprofen were compared since there is no previous specific comparative study for these two common analgesics. Forty-five bitches undergoing elective ovariohysterectomy were randomly assigned to one of three groups; receiving morphine 0.4 mg/kg bodyweight pre-operatively and 0.2 mg/kg every 4-6 hours thereafter (Morphine group), receiving a once-off carprofen 4 mg/kg injection (Carprofen group) or receiving both morphine and carprofen (MorphCarp group). The dogs were premedicated with acepromazine 0.01 mg/kg and induced with either thiopentone 5-10 mg/kg or propofol 4-6 mg/kg. General anaesthesia was maintained with halothane in oxygen. The degree of pain was assessed over a 24-hour period under blinded conditions using a pain scale modified from the University of Melbourne pain scale and the Glasgow composite pain tool. Physiological parameters such as respiratory rate, pulse rate and body temperature were also assessed over the same time period. There was no significant difference in pain-scores and thus analgesia offered by the three analgesia protocols at any assessment point across the three groups, but there were differences within groups across time points. Baseline total pain-scores were lower than scores at all post-operative points within all three groups. Both morphine and carprofen provided good analgesia without any obvious adverse effects. This study indicates that at the dosages indicated above, carprofen administered on its own produces analgesia equal to that produced by morphine and that the two drugs administered together do not produce better analgesia than either drug administered on its own.

Southern African Journal of Anaesthesia and Analgesia - Vol 20, No ...

African Journals Online (AJOL)

Effectiveness of tramadol/paracetamol compared with etoricoxib as postoperative analgesia in daycare surgery · EMAIL FREE FULL TEXT EMAIL FREE FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT. Choy Y. Choy, Adnan Isquandar, 155-159. http://dx.doi.org/10.1080/22201173.2014.936750 ...

Continuous bilateral thoracic paravertebral blockade for analgesia after cardiac surgery: a randomised, controlled trial.

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Lockwood, Geoff G; Cabreros, Leilani; Banach, Dorota; Punjabi, Prakash P

2017-10-01

Continuous bilateral thoracic paravertebral blockade has been used for analgesia after cardiac surgery, but its efficacy has never been formally tested. Fifty adult patients were enrolled in a double-blind, randomised, controlled study of continuous bilateral thoracic paravertebral infusion of 0.5% lidocaine (1 mg.kg -1 .hr -1 ) for analgesia after coronary surgery. Control patients received a subcutaneous infusion of lidocaine at the same rate through catheters inserted at the same locations as the study group. The primary outcome was morphine consumption at 48 hours using patient-controlled analgesia (PCA). Secondary outcomes included pain, respiratory function, nausea and vomiting. Serum lidocaine concentrations were measured on the first two post-operative days. There was no difference in morphine consumption or in any other outcome measure between the groups. Serum lidocaine concentrations increased during the study, with a maximum of 5.9 mg.l -1 . There were no adverse events as a consequence of the study. Bilateral paravertebral infusion of lidocaine confers no advantage over systemic lidocaine infusion after cardiac surgery. ISRCTN13424423 ( https://www.isrctn.com ).

Infant feeding and analgesia in labour: the evidence is accumulating

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Jordan Sue

2006-12-01

Full Text Available Abstract The interesting and important paper by Torvaldsen and colleagues provides further circumstantial evidence of a positive association between intrapartum analgesia and feeding infant formula. Not all research supports this association. Before 'failure to breastfeed' can be adjudged an adverse effect of intrapartum analgesia, the research evidence needs to be considered in detail. Examination of the existing evidence against the Bradford-Hill criteria indicates that the evidence is not yet conclusive. However, the difficulties of obtaining funding and undertaking large trials to explore putative adverse drug reactions in pregnant women may mean that we shall never have conclusive evidence of harm. Therefore, reports of large cohort studies with regression models, as in the paper published today, assume a greater importance than in other areas of investigation. Meanwhile, women and their clinicians may feel that sufficient evidence has accumulated to justify offering extra support to establish breastfeeding if women have received high doses of analgesics in labour.

The Neuroanatomy of Sexual Dimorphism in Opioid Analgesia

Science.gov (United States)

2014-04-13

2012 for review). Studies utilizing orofacial , somatosensory or visceral pain assays typically report that morphine produces a significantly greater...Review The neuroanatomy of sexual dimorphism in opioid analgesia Dayna R. Loyd a, Anne Z. Murphy b,⁎ a Pain Management Research Area, United States...online 13 April 2014 Keywords: Pain Periaqueductal gray Morphine Mu opioid receptor The influence of sex has been neglected in clinical studies on pain

Efficacy of Ultrasound-Guided Serratus Plane Block on Postoperative Quality of Recovery and Analgesia After Video-Assisted Thoracic Surgery: A Randomized, Triple-Blind, Placebo-Controlled Study.

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Kim, Do-Hyeong; Oh, Young Jun; Lee, Jin Gu; Ha, Donghun; Chang, Young Jin; Kwak, Hyun Jeong

2018-04-01

The optimal regional technique for analgesia and improved quality of recovery after video-assisted thoracic surgery (a procedure associated with considerable postoperative pain) has not been established. The main objective in this study was to compare quality of recovery in patients undergoing serratus plane block (SPB) with either ropivacaine or normal saline on the first postoperative day. Secondary outcomes were analgesic outcomes, including postoperative pain intensity and opioid consumption. Ninety patients undergoing video-assisted thoracic surgery were randomized to receive ultrasound-guided SPB with 0.4 mL/kg of either 0.375% ropivacaine (SPB group) or normal saline (control group) after anesthetic induction. The primary outcome was the 40-item Quality of Recovery (QoR-40) score at 24 hours after surgery. The QoR-40 questionnaire was completed by patients the day before surgery and on postoperative days 1 and 2. Pain scores, opioid consumption, and adverse events were assessed for 2 days postoperatively. Eighty-five patients completed the study: 42 in the SPB group and 43 in the control group. The global QoR-40 scores on both postoperative days 1 and 2 were significantly higher in the SPB group than in the control group (estimated mean difference 8.5, 97.5% confidence interval [CI], 2.1-15.0, and P = .003; 8.5, 97.5% CI, 2.0-15.1, and P = .004, respectively). The overall mean difference between the SPB and control groups was 8.5 (95% CI, 3.3-13.8; P = .002). Pain scores at rest and opioid consumption were significantly lower up to 6 hours after surgery in the SPB group than in the control group. Cumulative opioid consumption was significantly lower up to 24 hours postoperatively in the SPB group. Single-injection SPB with ropivacaine enhanced the quality of recovery for 2 days postoperatively and improved postoperative analgesia during the early postoperative period in patients undergoing video-assisted thoracic surgery.

The analgesic efficacy of intravenous lidocaine infusion after laparoscopic fundoplication: a prospective, randomized, double-blind, placebo-controlled trial

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Dale GJ

2016-12-01

Full Text Available Gregory J Dale,1 Stephanie Phillips,2 Gregory L Falk3 1Westmead Hospital Clinical School, The University of Sydney, 2Sydney Adventist Hospital Clinical School, The University of Sydney, 3Concord Clinical School, The University of Sydney, Sydney, Australia Abstract: This study aimed to determine if intravenous lidocaine infusion reduces postoperative pain intensity following laparoscopic fundoplication surgery and to also validate the safety of intravenous lidocaine at the dose tested. This was an equally randomized, double-blind, placebo-controlled, parallel-group, single center trial. Adult patients undergoing laparoscopic fundoplication were recruited. The intervention group received 1 mg/kg intravenous lidocaine bolus prior to induction of anesthesia, then an intravenous infusion at 2 mg/kg/h for 24 hours. The primary outcome was pain, measured using a numeric rating scale for 30 hours postoperatively. Secondary outcomes were nausea and vomiting, opioid requirements, adverse events, serum lidocaine concentration, and length of hospital stay. The study was terminated after an interim analysis of 24 patients showed evidence of futility. There was no difference in postoperative pain scores (lidocaine versus control, mean ± standard deviation at rest (2.0 ± 2.7 vs 2.1 ± 2.4, P=0.286 or with movement (2.0 ± 2.6 vs 2.6 ± 2.7, P=0.487. Three adverse events occurred in the lidocaine group (25% of patients. Intravenous lidocaine did not provide clinically significant analgesia to patients undergoing laparoscopic fundoplication. The serum lidocaine concentration of patients who experienced adverse events were within the therapeutic range. This trial cannot confirm the safety of intravenous lidocaine at the dose tested. Keywords: analgesia, local anesthetics, intravenous infusions, pharmacokinetics

Sex differences in the relationships between parasympathetic activity and pain modulation.

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Nahman-Averbuch, Hadas; Dayan, Lior; Sprecher, Elliot; Hochberg, Uri; Brill, Silviu; Yarnitsky, David; Jacob, Giris

2016-02-01

Higher parasympathetic activity is related to lower pain perception in healthy subjects and pain patients. We aimed to examine whether this relationship depends on sex, in healthy subjects. Parasympathetic activity was assessed using time- and frequency-domain heart rate variability indices and deep breathing ratio. Pain perception parameters, consisting of heat pain thresholds and pain ratings of supra-thresholds stimuli, as well as pain modulation parameters of mechanical temporal summation, pain adaptation, offset analgesia and conditioned pain modulation (CPM) response were examined. Forty healthy subjects were examined (20 men). Women demonstrated higher parasympathetic activity compared to men (high frequency power of 0.55±0.2 and 0.40±0.2, respectively, p=0.02) and less pain reduction in the offset analgesia paradigm (-35.4±29.1 and -55.0±31.2, respectively, p=0.046). Separate slopes models analyses revealed sex differences such that a significant negative correlation was observed between higher rMSSD (the root mean square of successive differences) and higher pain adaptation in men (r=-0.649, p=0.003) but not in women (r=0.382, p=0.106). Similarly, a significant negative correlation was found between higher rMSSD and higher efficiency of the CPM response in men (r=-0.510, p=0.026) but not in women (r=0.406, p=0.085). Sex hormones levels, psychological factors or baseline autonomic activity can be possible explanations for these sex differences. Future autonomic interventions destined to change pain modulation should consider sex as an important intervening factor. Copyright © 2015 Elsevier Inc. All rights reserved.

Labor induction just after external cephalic version with epidural analgesia at term

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Marcos J. Cuerva

2017-06-01

Conclusion: Considering that a high number of cesarean deliveries can be avoided, induction of labor after ECV with epidural analgesia at term can be considered after being discussed in selected patient.

Prophylactic use of pregabalin for prevention of succinylcholine-induced fasciculation and myalgia: a randomized, double-blinded, placebo-controlled study

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Vinit K. Srivastava

2016-04-01

Full Text Available ABSTRACT BACKGROUND: Succinylcholine is commonly used to achieve profound neuromuscular blockade of rapid onset and short duration. OBJECTIVE: The present study compared the efficacy of pregabalin for prevention of succinylcholine-induced fasciculation and myalgia. DESIGN: Prospective, randomized, placebo controlled, double blinded study. MATERIALS AND METHODS: Patients of both genders undergoing elective spine surgery were randomly assigned to two groups. Patients in Group P (pregabalin group received 150 mg of pregabalin orally 1 h prior to induction of anesthesia with sips of water and patients in Group C (control group received placebo. Anesthesia was induced with fentanyl 1.5 mcg/kg, propofol 1.5-2.0 mg/kg followed by succinylcholine 1.5 mg/kg. The intensity of fasciculations was assessed by an observer blinded to the group allotment of the patient on a 4-point scale. A blinded observer recorded postoperative myalgia grade after 24 h of surgery. Patients were provided patient-controlled analgesia with fentanyl for postoperative pain relief. RESULTS: Demographic data of both groups were comparable (p > 0.05. The incidence of muscle fasciculation's was not significant between two groups (p = 0.707, while more patients in group C had moderate to severe fasciculation's compared to group P (p = 0.028. The incidence and severity of myalgia were significantly lower in group P (p < 0.05. CONCLUSION: Pregabalin 150 mg prevents succinylcholine-induced fasciculations and myalgia and also decreases the fentanyl consumption in elective sine surgery.

Escitalopram in painful polyneuropathy: A randomized, placebo-controlled, cross-over trial

DEFF Research Database (Denmark)

Otto, Marit; Bach, Flemming W; Jensen, Troels S

2008-01-01

Serotonin (5-HT) is involved in pain modulation via descending pathways in the central nervous system. The aim of this study was to test if escitalopram, a selective serotonin reuptake inhibitor (SSRI), would relieve pain in polyneuropathy. The study design was a randomized, double-blind, placebo......-controlled cross-over trial. The daily dose of escitalopram was 20mg once daily. During the two treatment periods of 5 weeks duration, patients rated pain relief (primary outcome variable) on a 6-point ordered nominal scale. Secondary outcome measures comprised total pain and different pain symptoms (touch...

Comparative evaluation of dexmedetomidine and fentanyl for epidural analgesia in lower limb orthopedic surgeries

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Sukhminder Jit Singh Bajwa

2011-01-01

Full Text Available Background and Aims: Opioids as epidural adjunct to local anesthetics (LA have been in use since long and α-2 agonists are being increasingly used for similar purpose. The present study aims at comparing the hemodynamic, sedative, and analgesia potentiating effects of epidurally administered fentanyl and dexmedetomidine when combined with ropivacaine. Methods: A total of one hundred patients of both gender aged 21-56 years, American Society of Anaesthesiologist (ASA physical status I and II who underwent lower limb orthopedic surgery were enrolled into the present study. Patients were randomly divided into two groups: Ropivacaine + Dexmedetomidine (RD and Ropivacaine + Fentanyl (RF, comprising 50 patie nts each. Inj. Ropivacaine, 15 ml of 0.75%, was administered epidurally in both the groups with addition of 1 μg/kg of dexmedetomidine in RD group and 1 μg/kg of fentanyl in RF group. Besides cardio-respiratory parameters and sedation scores, various block characteristics were also observed which included time to onset of analgesia at T10, maximum sensory analgesic level, time to complete motor blockade, time to two segmental dermatomal regressions, and time to first rescue analgesic. At the end of study, data was compiled systematically and analyzed using ANOVA with post-hoc significance, Chi-square test and Fisher′s exact test. Value of P<0.05 is considered significant and P<0.001 as highly significant. Results: The demographic profile of patients was comparable in both the groups. Onset of sensory analgesia at T10 (7.12±2.44 vs 9.14±2.94 and establishment of complete motor blockade (18.16±4.52 vs 22.98±4.78 was significantly earlier in the RD group. Postoperative analgesia was prolonged significantly in the RD group (366.62±24.42 and consequently low dose consumption of local anaesthetic LA (76.82±14.28 vs 104.35±18.96 during epidural top-ups postoperatively. Sedation scores were much better in the RD group and highly significant on

Differential effectiveness of placebo treatments

DEFF Research Database (Denmark)

Meissner, Karin; Fässler, Margrit; Rücker, Gerta

2013-01-01

IMPORTANCE When analyzing results of randomized clinical trials, the treatment with the greatest specific effect compared with its placebo control is considered to be the most effective one. Although systematic variations of improvements in placebo control groups would have important implications...... relevant sources through February 2012 and contacted the authors to identify randomized clinical trials on the prophylaxis of migraine with an observation period of at least 8 weeks after randomization that compared an experimental treatment with a placebo control group. We calculated pooled random-effects...... and sham surgery are associated with higher responder ratios than oral pharmacological placebos. Clinicians who treat patients with migraine should be aware that a relevant part of the overall effect they observe in practice might be due to nonspecific effects and that the size of such effects might differ...

Placebo treatment facilitates social trust and approach behavior.

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Yan, Xinyuan; Yong, Xue; Huang, Wenhao; Ma, Yina

2018-05-29

Placebo effect refers to beneficial changes induced by the use of inert treatment, such as placebo-induced relief of physical pain and attenuation of negative affect. To date, we know little about whether placebo treatment could facilitate social functioning, a crucial aspect for well-being of a social species. In the present study, we develop and validate a paradigm to induce placebo effects on social trust and approach behavior (social placebo effect), and show robust evidence that placebo treatment promotes trust in others and increases preference for a closer interpersonal distance. We further examine placebo effects in real-life social interaction and show that placebo treatment makes single, but not pair-bonded, males keep closer to an attractive first-met female and perceive less social anxiety in the female. Finally, we show evidence that the effects of placebo treatment on social trust and approach behavior can be as strong as the effect of intranasal administration of oxytocin, a neuropeptide known for its function in facilitating social cognition and behavior. The finding of the social placebo effect extends our understanding of placebo effects on improvement of physical, mental, and social well-being and suggests clinical potentials in the treatment of social dysfunction.

ESTIMATION OF MULTI-MODAL ANALGESIA ADEQUACY IN THE PERIOPERATIVE PERIOD AT LONG-TERMED TRAUMATIZING ABDOMINAL OPERATIVE INTERVENTIONS

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V. Kh. Sharipova

2015-01-01

Full Text Available PURPOSE OF THE STUDY. Improvement of perioperative multimodal analgesia at long­termed traumatizing abdominal interventions with estimation of its effectiveness.MATERIALS AND METHODS. Eighty six patients have been examined and divided into 3 groups depending on anesthesia and postoperative pain relief methods.RESULTS. The effectiveness of perioperative multi­modal analgesia using methods affecting the whole pathogenesis of pain has been revealed. Minimal stress of central and peripheral hemodynamics parameters, less evident pain syndrome in the post­operative period, economic effect shown up by the decrease of the use of narcotic analgesics both in intra­ and post­operative period have been observed.CONCLUSION. Algorithm of perioperative multi­modal analgesia at long­termed and traumatizing abdominal operative interventions has been developed. 

Comparison of continuous interscalene block and subacromial infusion of local anesthetic for postoperative analgesia after open shoulder surgery.

Science.gov (United States)

Baskan, Semih; Cankaya, Deniz; Unal, Hidayet; Yoldas, Burak; Taspinar, Vildan; Deveci, Alper; Tabak, Yalcin; Baydar, Mustafa

2017-01-01

This study compared the efficacy of continuous interscalene block (CISB) and subacromial infusion of local anesthetic (CSIA) for postoperative analgesia after open shoulder surgery. This randomized, prospective, double-blinded, single-center study included 40 adult patients undergoing open shoulder surgery. All patients received a standardized general anesthetic. The patients were separated into group CISB and group CSIA. A loading dose of 40 mL 0.25% bupivacaine was administered and patient-controlled analgesia was applied by catheter with 0.1% bupivacaine 5 mL/h throughout 24 h basal infusion, 2 mL bolus dose, and 20 min knocked time in both groups postoperatively. Visual analog scale (VAS) scores, additional analgesia need, local anesthetic consumption, complications, and side effects were recorded during the first 24 h postoperatively. The range of motion (ROM) score was recorded preoperatively and in the first and third weeks postoperatively. A statistically significant difference was determined between the groups in respect of consumption of local anesthetic, VAS scores, additional analgesia consumption, complications, and side effects, with lower values recorded in the CISB group. There were no significant differences in ROM scoring in the preoperative and postoperative third week between the two groups but there were significant differences in ROM scoring in the postoperative first week, with higher ROM scoring values in the group CISB patients. The results of this study have shown that continuous interscalene infusion of bupivacaine is an effective and safe method of postoperative analgesia after open shoulder surgery.

Transversus abdominis plane block as a component of multimodal analgesia for laparoscopic cholecystectomy.

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Oksar, Menekse; Koyuncu, Onur; Turhanoglu, Selim; Temiz, Muhyittin; Oran, Mustafa Cemil

2016-11-01

To evaluate and compare intercostal-iliac transversus abdominis plane (TAP) and oblique subcostal TAP (OSTAP) blocks for multimodal analgesia in patients receiving laparoscopic cholecystectomy. A prospective, randomized, double-blinded clinical study. Operating room, postoperative recovery area, and ward. In total, 60 laparoscopic cholecystectomy patients (43 women, 17 men, American Society of Anesthesiologists grades I-II) were enrolled from the general surgery department of our tertiary care center. The patients were assigned to 1 of the 3 groups. Group 1 received TAP blocks (n=20), group 2 received OSTAP blocks (n=20), and group 3 patients were used as controls and received patient-controlled analgesia (PCA) only (n=20). After the induction of anesthesia, blocks were performed bilaterally in study groups 1 and 2, using 20mL of lidocaine (5mg/mL). PCA with intravenous tramadol was routinely provided for all patients during the first 24hours. The intraoperative use of remifentanil, postoperative visual analog scale (VAS) scores, demand for PCA, and total analgesic consumption were recorded. The patients in the control group had greater analgesic demands and analgesic consumption than did those in groups 1 and 2. However, patients in the OSTAP group had lower VAS scores than did those in groups 1 and 3. The demand for analgesia was greater in the control group than in groups 1 and 2. Moreover, lower VAS scores were recorded in the OSTAP group than in groups 1 and 3 and were positively correlated with total PCA consumption among all patients. However, postoperative VAS scores were negatively correlated with the total intraoperative consumption of remifentanil at 24hours. TAP and OSTAP blocks improved postoperative analgesia in patients receiving laparoscopic cholecystectomy, which resulted in lower VAS scores and reduction in total analgesic consumption. Copyright © 2016 Elsevier Inc. All rights reserved.

Optimal Dose of Epidural Dexmedetomidine Added to Ropivacaine for Epidural Labor Analgesia: A Pilot Study

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Zhang Wangping

2017-01-01

Full Text Available Background. Dexmedetomidine combined with local anesthetics can decrease the concentration of epidural ropivacaine. However, the optimal dose of epidural dexmedetomidine combined with ropivacaine for labor analgesia is still uncertain. This study investigated the effect of adding different dose of epidural dexmedetomidine to ropivacaine during epidural labor analgesia. Methods. One hundred women were randomly assigned to one of the four groups (Groups A, B, C, and D received 0.25, 0.5, 0.75, and 1 μg/ml of dexmedetomidine plus 0.1% ropivacaine, resp.. The onset of epidural anesthesia and stages of labor were studied, and pain was assessed using a visual analogue scale (VAS. Hemodynamic parameters and fetal heart rate were monitored. Apgar scores and umbilical artery pH were recorded. The side effects, if any, were recorded also. Results. The addition of 0.25, 0.5, and 0.75 μg/ml of dexmedetomidine to 0.1% ropivacaine provided safe and effective analgesia, but 1 μg/ml of dexmedetomidine resulted in increasing incidence of motor block. The hemodynamic parameters were similar between groups (P>0.05. Side effects in Group D were significantly higher than those in the other three groups (P<0.05. Conclusions. When dexmedetomidine is combined with 0.1% ropivacaine, the optimal concentration of dexmedetomidine is 0.5 μg/ml for epidural labor analgesia (this trial is registered with ChiCTR-OPC-16008548.

Comparison of morphine and carprofen administered alone or in combination for analgesia in dogs undergoing ovariohysterectomy

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T.B. Dzikiti

2006-06-01

Full Text Available In this study the analgesic efficacy of the pure agonistic opioid morphine and the cyclo-oxygenase type-2-selective carprofen were compared since there is no previous specific comparative study for these two common analgesics. Forty-five bitches undergoing elective ovariohysterectomy were randomly assigned to one of three groups; receiving morphine 0.4 mg/kg bodyweight pre-operatively and 0.2 mg/kg every 4-6 hours thereafter (Morphine group, receiving a once-off carprofen 4 mg/kg injection (Carprofen group or receiving both morphine and carprofen (MorphCarp group. The dogs were premedicated with acepromazine 0.01 mg/kg and induced with either thiopentone 5-10 mg/kg or propofol 4-6 mg/kg. General anaesthesia was maintained with halothane in oxygen. The degree of pain was assessed over a 24-hour period under blinded conditions using a pain scale modified from the University of Melbourne pain scale and the Glasgow composite pain tool. Physiological parameters such as respiratory rate, pulse rate and body temperature were also assessed over the same time period. There was no significant difference in pain-scores and thus analgesia offered by the three analgesia protocols at any assessment point across the three groups, but there were differences within groups across time points. Baseline total pain-scores were lower than scores at all post-operative points within all three groups. Both morphine and carprofen provided good analgesia without any obvious adverse effects. This study indicates that at the dosages indicated above, carprofen administered on its own produces analgesia equal to that produced by morphine and that the two drugs administered together do not produce better analgesia than either drug administered on its own.

Comparative study of caudal bupivacaine versus bupivacaine with tramadol for postoperative analgesia in paediatric cancer patients

Institute of Scientific and Technical Information of China (English)

Mohammed Hegazy; Ayman A. Ghoneim

2013-01-01

Objective: Caudal epidural analgesia has become very common analgesic technique in paediatric surgery. Add-ing tramadol to bupivacaine for caudal injection prolongs duration of analgesia with minimal side effects. The aim of the study was to investigate the different effects of caudal bupivacaine versus bupivacaine with thamadol for postoperative analgesia in paediatric cancer patients. Methods: A prospective randomized controlled trial was conducted over 40 paediatric cancer pa-tients who were recruited from Children Cancer Hospital of Egypt (57357 Hospital). Patients were randomized into 2 groups: bupivacaine group (group B, 20 patients) to receive single shot caudal block of 1 mL/kg 0.1875% bupivacaine; tramadol group (group T, 20 patients) prepared as group B with the addition of 1 mg/kg caudal tramadol. Results: The mean duration of analgesia was significantly longer among group T than group B [(24 ± 13.7) hours versus (7 ± 3.7) hours respectively with P = 0.001]. Group T showed a significantly lower mean FLACC score than group B (2.2 ± 0.9 versus 3.6 ± 0.6 with P = 0.002). The difference in FLACC score was comparable on arrival, and after 2 and 4 hours. At 8 and 12 hours the group B recorded significantly higher scores (P = 0.002 and 0.0001 respectively). There were no significant differences between the groups as regards sedation score [the median in both groups was 1 (0–1) with P value = o.8]. No one developed facial flush or pruritis. Conclusion: Caudal injection of low dose tramadol 1 mg/kg with bupivacaine 0.1875% is proved to be effective, long standing technique for postoperative analgesia in major paediatric cancer surgery and almost devoid of side effect.

Improved Outcomes Associated with the Liberal Use of Thoracic Epidural Analgesia in Patients with Rib Fractures.

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Jensen, Courtney D; Stark, Jamie T; Jacobson, Lewis L; Powers, Jan M; Joseph, Michael F; Kinsella-Shaw, Jeffrey M; Denegar, Craig R

2017-09-01

Each year, more than 150,000 patients with rib fractures are admitted to US trauma centers; as many as 10% die. Effective pain control is critical to survival. One way to manage pain is thoracic epidural analgesia. If this treatment reduces mortality, more frequent use may be indicated. We analyzed the patient registry of a level II trauma center. All patients admitted with one or more rib fractures (N = 1,347) were considered. Patients who were not candidates for epidural analgesia (N = 382) were eliminated. Mortality was assessed with binary logistic regressions. Across the total population, mortality was 6.7%; incidence of pneumonia was 11.1%; mechanical ventilation was required in 23.8% of patients, for an average duration of 10.0 days; average stay in the hospital was 7.7 nights; and 49.7% of patients were admitted to the ICU for an average of 7.2 nights. Epidural analgesia was administered to 18.4% of patients. After matching samples for candidacy, patients who received epidurals were 3.7 years older, fractured 2.6 more ribs, had higher injury severity scores, and were more likely to present with bilateral fractures, flail segments, pulmonary contusions, hemothoraces, and pneumothoraces. Despite greater injury severity, mortality among these patients was lower (0.5%) than those who received alternative care (1.9%). Controlling for age, injury severity, and use of mechanical ventilation, epidural analgesia predicted a 97% reduction in mortality. Thoracic epidural analgesia associates with reduced mortality in rib fracture patients. Better care of this population is likely to be facilitated by more frequent reliance on this treatment. © 2016 American Academy of Pain Medicine. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com

D1- and D2-like dopamine receptors within the nucleus accumbens contribute to stress-induced analgesia in formalin-related pain behaviours in rats.

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Faramarzi, G; Zendehdel, M; Haghparast, A

2016-10-01

Stressful experiences can produce analgesia, termed stress-induced analgesia (SIA). Meanwhile, it has been widely established that the mesolimbic dopamine pathway and nucleus accumbens (NAc) have a profound role in pain modulation. In this study, we examined the role of accumbal dopamine receptors in antinociception caused by forced swim stress (FSS) in order to understand more about the function of these receptors within the NAc in FSS-induced analgesia. Stereotaxic surgery was unilaterally performed on adult male Wistar rats weighing 230-250 g (some on the left and some on the right side of the midline). Two supergroups were microinjected into the NAc with a D1-like dopamine receptor antagonist, SCH-23390, at doses of 0.25, 1 and 4 μg/0.5 μl saline per rat or Sulpiride as a D2-like dopamine receptor antagonist at the same doses [0.25, 1 and 4 μg/0.5 μl dimethyl sulfoxide (DMSO) per rat]; while their controls just received intra-accumbal saline or DMSO at 0.5 μl, respectively. The formalin test was performed after rats were subjected to FSS (6 min, 25 ± 1 °C) to assess pain-related behaviours. The results demonstrated that intra-accumbal infusions of SCH-23390 and Sulpiride dose-dependently reduced FSS-induced antinociception in both phases of the formalin test. However, the percentage decrease in area under the curve (AUC) values calculated for treatment groups compared to formalin-control group was more significant in the late phase than the early phase. Our findings suggest that D1- and D2-like dopamine receptors in the NAc are involved in stress-induced antinociceptive behaviours in the formalin test as an animal model of persistent inflammatory pain. Forced swim stress (FSS) induces the antinociception in both phases of formalin test. Blockade of accumbal dopamine receptors attenuate the antinociception induced by FSS. Stress-induced analgesia is dose-dependently reduced by dopamine receptor antagonists in both phases, although it is more

Knowledge, attitude and acceptance of antenatal women toward labor analgesia and caesarean section in a medical college hospital in India

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Udita Naithani

2011-01-01

Full Text Available Background : The present audit was initiated to evaluate the knowledge, attitude, perception and acceptance of women toward labor analgesia and caesarean section, in a Medical College Hospital in Udaipur, India. Materials and Methods : A semi-structured interview of 200 antenatal women was conducted, to assess the knowledge, attitude and perception regarding labor analgesia and caesarean section (CS and to estimate the correlation of awareness and acceptability with demographic variables. The data were analyzed using Epi Info 6 and the Likert type scale (0 - 10, as also the chi square test, to calculate the statistical significance. Results : Most of the patients (n = 181, 90.50% were unaware of labor analgesia. When the option of labor analgesia was offered, only 23% (n = 46 accepted it and the most significant reason for refusal was to experience natural child birth (n = 114 / 154, 74.03%. An educational status of the graduate level had a positive impact on knowledge about labor analgesia (P = 0.0001. When the option for CS was offered, 73.50% women (n = 147; P = 0.008 refused and the most common reasons for refusal were fear of operation (53.06%, n = 78 and delay in resuming household work (46.26%, n = 68. Educational status up to the graduate level and previous surgical experience of CS had a positive correlation with preference for CS (P = 0.0092 and P = 0.0001, respectively. Conclusions : Awareness and acceptance for labor analgesia was relatively low among the prospective parturients. A higher level of education had a significant impact on their decisions regarding delivery.

Postoperative pain and gastro-intestinal recovery after colonic resection with epidural analgesia and multimodal rehabilitation

DEFF Research Database (Denmark)

Werner, M U; Gaarn-Larsen, L; Basse, L

2005-01-01

The aim of the study was to evaluate initial postoperative pain intensity and the association with recovery of gastrointestinal function and length of stay (LOS) in a multimodal programme with epidural analgesia, early oral nutrition and mobilisation with a 48 h planned hospital stay. One hundred......, respectively. Gastrointestinal recovery and LOS did not differ between patients with high (3-6) versus low (0-2) dynamic pain scores (P > 0.4 and P > 0.1, respectively). It is concluded that a multimodal rehabilitation program including continuous thoracic epidural analgesia leads to early recovery...

Analgesia regional periférica com lidocaína em paciente queimado: relato de caso

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Geier, Karl Otto

2004-01-01

JUSTIFICATIVA E OBJETIVOS: A realização de anestesia regional em pacientes queimados é dificultosa pela localização aleatória das lesões térmicas. Elevadas taxas de alfa1 glicoproteína ácida com grande afinidade para drogas alcalinas, especialmente a lidocaína, têm sido observadas nesses pacientes. Este caso relata como o uso intermitente de anestesia e analgesia regional periférica com altas doses de lidocaína podem ser úteis em fornecer efetiva analgesia num paciente com queimaduras de segu...

Placebo Trends across the Border: US versus Canada.

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Harris, Cory S; Campbell, Natasha K J; Raz, Amir

2015-01-01

Physicians around the world report to using placebos in a variety of situations and with varying degrees of frequency. Inconsistent methodologies, however, complicate interpretation and prevent direct comparisons across studies. While US- and Canada-based physicians share similar professional standards, Canada harbours a less-litigious universal healthcare model with no formal placebo-related policy-factors that may impact how physicians view and use placebos. To compare American and Canadian data, we circulated an online survey to academic physicians practicing in Canada, collected anonymous responses, and extracted those of internists and rheumatologists for comparison to US data obtained through parallel methodologies. Whereas our data show overall concordance across the border-from definitions to ethical limitations and therapeutic potential-differences between American- and Canadian-based placebo practices merit acknowledgement. For example, compared to 45%-80% among US-based respondents, only 23±7% of Canada-based respondents reported using placebos in clinical practice. However, 79±7% of Canada-respondents-a figure comparable to US data-professed to prescribing at least one form of treatment without proven or expected efficacy. Placebo interventions including unwarranted vitamins and herbal supplements (impure placebos) as well as sugar pills and saline injections (pure placebos) appear more common in Canada, where more doctors described placebos as "placebos" (rather than "medications") and used them as a "diagnostic" tool (rather than a means of placating patient demands for treatment). Cross-border variation in the use of clinical placebos appears minor despite substantial differences in health care delivery system, malpractice climate, and placebo-related policy. The prevalence of impure placebos in both Canadian and US clinics raises ethical and practical questions currently unaddressed by policy and warranting investigation.

Examination of Org 26576, an AMPA receptor positive allosteric modulator, in patients diagnosed with major depressive disorder: an exploratory, randomized, double-blind, placebo-controlled trial.

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Nations, Kari R; Dogterom, Peter; Bursi, Roberta; Schipper, Jacques; Greenwald, Scott; Zraket, David; Gertsik, Lev; Johnstone, Jack; Lee, Allen; Pande, Yogesh; Ruigt, Ge; Ereshefsky, Larry

2012-12-01

Org 26576 acts by modulating ionotropic AMPA-type glutamate receptors to enhance glutamatergic neurotransmission. The aim of this Phase 1b study (N=54) was to explore safety, tolerability, pharmacokinetics, and pharmacodynamics of Org 26576 in depressed patients. Part I (N=24) evaluated the maximum tolerated dose (MTD) and optimal titration schedule in a multiple rising dose paradigm (range 100 mg BID to 600 mg BID); Part II (N=30) utilized a parallel groups design (100 mg BID, 400 mg BID, placebo) to examine all endpoints over a 28-day dosing period. Based on the number of moderate intensity adverse events reported at the 600 mg BID dose level, the MTD established in Part I was 450 mg BID. Symptomatic improvement as measured by the Montgomery-Asberg Depression Rating Scale was numerically greater in the Org 26576 groups than in the placebo group in both study parts. In Part II, the 400 mg BID dose was associated with improvements in executive functioning and speed of processing cognitive tests. Org 26576 was also associated with growth hormone increases and cortisol decreases at the end of treatment but did not influence prolactin or brain-derived neurotrophic factor. The quantitative electroencephalogram index Antidepressant Treatment Response at Week 1 was able to significantly predict symptomatic response at endpoint in the active treatment group, as was early improvement in social acuity. Overall, Org 26576 demonstrated good tolerability and pharmacokinetic properties in depressed patients, and pharmacodynamic endpoints suggested that it may show promise in future well-controlled, adequately powered proof of concept trials.

Ilioinguinal-iliohypogastric nerve block with intravenous dexketoprofen improves postoperative analgesia in abdominal hysterectomies.

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Yucel, Evren; Kol, Iclal Ozdemir; Duger, Cevdet; Kaygusuz, Kenan; Gursoy, Sinan; Mimaroglu, Caner

2013-01-01

In this study, our aim was to evaluate the effects of intravenous dexketoprofen trometamol with ilioinguinal and iliohypogastric nerve block on analgesic quality and morphine consumption after total abdominal hysterectomy operations. We conducted this randomized controlled clinical study on 61 patients. The study was conducted in the operation room, post-anesthesia care unit, and inpatient clinic. We randomly grouped the 61 patients into control group (group C), block group (group B) and dexketoprofen-block group (group DB). Before the skin incision performed after anesthesia induction, we performed ilioinguinal iliohypogastric block (group C given saline and group P and DB given levobupivacaine). In contrast to group C and B, group DB was given dexketoprofen. We administered morphine analgesia to all patients by patient-controlled analgesia (PCA) during the postoperative 24 hours. We recorded Visual Analogue Scale (VAS), satisfaction scores, morphine consumption and side effects during postoperative 24 hours. We found the DB group's VAS scores to be lower than the control group and block group's (p dexketoprofen increases patient satisfaction by decreasing opioid consumption, increasing patient satisfaction, which suggests that dexketoprofen trometamol is an effective non-steroidal anti-inflammatory analgesic in postoperative analgesia. Copyright © 2013 Sociedade Brasileira de Anestesiologia. Published by Elsevier Editora Ltda. All rights reserved.

Mast cell deficiency attenuates acupuncture analgesia for mechanical pain using c-kit gene mutant rats.

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Cui, Xiang; Liu, Kun; Xu, Dandan; Zhang, Youyou; He, Xun; Liu, Hao; Gao, Xinyan; Zhu, Bing

2018-01-01

Acupuncture therapy plays a pivotal role in pain relief, and increasing evidence demonstrates that mast cells (MCs) may mediate acupuncture analgesia. The present study aims to investigate the role of MCs in acupuncture analgesia using c-kit gene mutant-induced MC-deficient rats. WsRC-Ws/Ws rats and their wild-type (WT) littermates (WsRC-+/+) were used. The number of MCs in skin of ST36 area was compared in two rats after immunofluorescence labeling. Mechanical withdrawal latency (MWL), mechanical withdrawal threshold (MWT), and thermal withdrawal latency (TWL) were measured on bilateral plantar for pain threshold evaluation before and after each stimulus. Acupuncture- and moxibustion-like stimuli (43°C, 46°C heat, 1 mA electroacupuncture [EA], 3 mA EA, and manual acupuncture [MA]) were applied randomly on different days. Fewer MCs were observed in the skin of ST36 in mutant rats compared to WT rats ( P 0.05). Bilateral MWL and MWT in WsRC-+/+ rats increased significantly after each stimulus compared to baseline ( P <0.01, P <0.001). In WsRC-Ws/Ws rats, only noxious stimuli could produce anti-nociceptive effects for mechanical pain (46°C, 3 mA EA, MA) ( P <0.01, P <0.001). Additionally, the net increases in MWL and MWT induced by most stimuli were greater in WT than in mutant rats ( P <0.05). For thermal nociception, either high- or low-intensity stimuli could significantly augment TWL in two rats ( P <0.001), and the net increases of TWL evoked by most stimuli were to the same extent in two genetic variants. MCs influence the basic mechanical but not thermal pain threshold. MCs participate in acupuncture analgesia in mechanical but not in thermal nociception, in that MC deficiency may attenuate the mechanical analgesia evoked by high-intensity stimuli and eliminate analgesia provoked by low-intensity stimuli.

PREEMPTIVE SINGLE-DOSE PREGABALIN IN MODULATION OF POSTOPERATIVE PAIN AND OPIOID REQUIREMENT AFTER LAPAROSCOPIC CHOLECYSTECTOMY- A RANDOMIZED CLINICAL STUDY

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Rajib Hazarika

2018-01-01

Full Text Available BACKGROUND With the enormous advancement in the field of laparoscopic cholecystectomy, postoperative pain has substantially reduced as compared to open procedures. However, postoperative pain is still the most frequent complaint, which can hamper recovery, mandate inpatient admission and thereby increase the cost of such care. Preemptive analgesia attenuates sensitisation of pain before surgery so as to reduce postoperative hyperalgesia and allodynia. Pregabalin is a structural analog of γ-aminobutyric acid, which shows analgesic, anticonvulsant, and anxiolytic effects. The aim of the present study was to evaluate the effectiveness of preemptive oral pregabalin on postoperative pain and opioid consumption in patients undergoing laparoscopic cholecystectomy. MATERIALS AND METHODS Eighty adult patients of ASA I and II undergoing laparoscopic cholecystectomy were randomly divided into two groups to receive either pregabalin 150 mg capsule or a matching placebo (vitamin B complex capsule 1 hour before surgery. Anaesthesia technique was standardised in both the groups. Postoperative pain was assessed at 0, 1, 2, 3, 6, 9, 12, 18 and 24 hours period postoperatively by a 10 cm visual analogue scale, where 0, no pain; 10, worst imaginable pain. Subjects received Inj. Tramadol hydrochloride (1 mg/kg IV as a rescue analgesic whenever VAS score was ≥4. Occurrence of any side effects like nausea, vomiting, sedation, headache and dizziness was also noted. Statistical Analysis Used- Data analysis was done using PASW 18.0 software. Results were analysed by Mann-Whitney U-test, large sample difference in proportion test and Fisher’s Exact test. RESULTS Patients in the pregabalin group had significantly lower pain scores at all the time intervals in comparison to placebo group (p<0.05. Total postoperative tramadol consumption in the pregabalin group was statistically significantly lower than in the control group (p<0.05 and also time to first request for