WorldWideScience

Sample records for advanced airway management

  1. Assessing Advanced Airway Management Performance in a National Cohort of Emergency Medical Services Agencies.

    Science.gov (United States)

    Wang, Henry E; Donnelly, John P; Barton, Dustin; Jarvis, Jeffrey L

    2018-05-01

    Although often the focus of quality improvement efforts, emergency medical services (EMS) advanced airway management performance has few national comparisons, nor are there many assessments with benchmarks accounting for differences in agency volume or patient mix. We seek to assess variations in advanced airway management and conventional intubation performance in a national cohort of EMS agencies. We used EMS data from ESO Solutions, a national EMS electronic health record system. We identified EMS emergency responses with attempted advanced airway management (conventional intubation, rapid sequence intubation, sedation-assisted intubation, supraglottic airway insertion, and cricothyroidotomy). We also separately examined cases with initial conventional intubation. We determined EMS agency risk-standardized advanced airway management and initial conventional intubation success rates by using mixed-effects regression models, fitting agency as a random intercept, adjusting for patient age, sex, race, cardiac arrest, or trauma status, and use of rapid sequence or sedation-assisted intubation, and accounting for reliability variations from EMS agency airway volume. We assessed changes in agency advanced airway management and initial conventional intubation performance rank after risk and reliability adjustment. We also identified high and low performers (reliability-adjusted and risk-standardized success confidence intervals falling outside the mean). During 2011 to 2015, 550 EMS agencies performed 57,209 advanced airway management procedures. Among 401 EMS agencies with greater than or equal to 10 advanced airway management procedures, there were a total of 56,636 procedures. Median reliability-adjusted and risk-standardized EMS agency advanced airway management success was 92.9% (interquartile range 90.1% to 94.8%; minimum 58.2%; maximum 99.0%). There were 56 advanced airway management low-performing and 38 high-performing EMS agencies. Among 342 agencies with

  2. Pre-hospital advanced airway management by anaesthesiologists: is there still room for improvement?

    Science.gov (United States)

    Sollid, Stephen J M; Heltne, Jon Kenneth; Søreide, Eldar; Lossius, Hans Morten

    2008-07-21

    Endotracheal intubation is an important part of pre-hospital advanced life support that requires training and experience, and should only be performed by specially trained personnel. In Norway, anaesthesiologists serve as Helicopter Emergency Medical Service HEMS physicians. However, little is known about how they themselves evaluate the quality and safety of pre-hospital advanced airway management. Using a semi-structured questionnaire, we interviewed anaesthesiologists working in the three HEMS programs covering Western Norway. We compared answers from specialists and non-specialists as well as full- and part-time HEMS physicians. Of the 17 available respondents, most (88%) felt that their continuous exposure to intubations was not sufficient. Additional training was mainly acquired through other clinical practice and mannequin- or cadaver-based skills training. Of the respondents, 77% and 35% reported having experienced difficult and failed intubations, respectively. Further, 59% reported knowledge of airway management-related deaths in their HEMS program. Significantly more full- than part-time HEMS physicians had experienced these problems. All respondents had airway back-up equipment in their service, but 29% were not familiar with all the equipment. The majority of anaesthesiologists working as HEMS physicians view pre-hospital advanced airway management as a high-risk procedure. Relevant airway management competencies for HEMS physicians in Norway seem to be insufficiently trained and maintained. A better-defined level of competence with better training methods and systems seems warranted.

  3. Pre-hospital advanced airway management by anaesthesiologists: Is there still room for improvement?

    Directory of Open Access Journals (Sweden)

    Søreide Eldar

    2008-07-01

    Full Text Available Abstract Background Endotracheal intubation is an important part of pre-hospital advanced life support that requires training and experience, and should only be performed by specially trained personnel. In Norway, anaesthesiologists serve as Helicopter Emergency Medical Service HEMS physicians. However, little is known about how they themselves evaluate the quality and safety of pre-hospital advanced airway management. Method Using a semi-structured questionnaire, we interviewed anaesthesiologists working in the three HEMS programs covering Western Norway. We compared answers from specialists and non-specialists as well as full- and part-time HEMS physicians. Results Of the 17 available respondents, most (88% felt that their continuous exposure to intubations was not sufficient. Additional training was mainly acquired through other clinical practice and mannequin- or cadaver-based skills training. Of the respondents, 77% and 35% reported having experienced difficult and failed intubations, respectively. Further, 59% reported knowledge of airway management-related deaths in their HEMS program. Significantly more full- than part-time HEMS physicians had experienced these problems. All respondents had airway back-up equipment in their service, but 29% were not familiar with all the equipment. Conclusion The majority of anaesthesiologists working as HEMS physicians view pre-hospital advanced airway management as a high-risk procedure. Relevant airway management competencies for HEMS physicians in Norway seem to be insufficiently trained and maintained. A better-defined level of competence with better training methods and systems seems warranted.

  4. A consensus-based template for uniform reporting of data from pre-hospital advanced airway management

    DEFF Research Database (Denmark)

    Sollid, Stephen J M; Lockey, David; Lossius, Hans Morten

    2009-01-01

    with airway management have recently propagated the need for guidelines and standards in pre-hospital airway management. Following the path of other initiatives to establish templates for uniform data reporting, like the many Utstein-style templates, we initiated and carried out a structured consensus process......, the group defined 19 optional variables for which a consensus could not be achieved or the data were considered as valuable but not essential. CONCLUSION: We successfully developed an Utstein-style template for documenting and reporting pre-hospital airway management. The core dataset for this template......BACKGROUND: Advanced airway management is a critical intervention that can harm the patient if performed poorly. The available literature on this subject is rich, but it is difficult to interpret due to a huge variability and poor definitions. Several initiatives from large organisations concerned...

  5. Association of prehospital advanced airway management with neurologic outcome and survival in patients with out-of-hospital cardiac arrest.

    Science.gov (United States)

    Hasegawa, Kohei; Hiraide, Atsushi; Chang, Yuchiao; Brown, David F M

    2013-01-16

    It is unclear whether advanced airway management such as endotracheal intubation or use of supraglottic airway devices in the prehospital setting improves outcomes following out-of-hospital cardiac arrest (OHCA) compared with conventional bag-valve-mask ventilation. To test the hypothesis that prehospital advanced airway management is associated with favorable outcome after adult OHCA. Prospective, nationwide, population-based study (All-Japan Utstein Registry) involving 649,654 consecutive adult patients in Japan who had an OHCA and in whom resuscitation was attempted by emergency responders with subsequent transport to medical institutions from January 2005 through December 2010. Favorable neurological outcome 1 month after an OHCA, defined as cerebral performance category 1 or 2. Of the eligible 649,359 patients with OHCA, 367,837 (57%) underwent bag-valve-mask ventilation and 281,522 (43%) advanced airway management, including 41,972 (6%) with endotracheal intubation and 239,550 (37%) with use of supraglottic airways. In the full cohort, the advanced airway group incurred a lower rate of favorable neurological outcome compared with the bag-valve-mask group (1.1% vs 2.9%; odds ratio [OR], 0.38; 95% CI, 0.36-0.39). In multivariable logistic regression, advanced airway management had an OR for favorable neurological outcome of 0.38 (95% CI, 0.37-0.40) after adjusting for age, sex, etiology of arrest, first documented rhythm, witnessed status, type of bystander cardiopulmonary resuscitation, use of public access automated external defibrillator, epinephrine administration, and time intervals. Similarly, the odds of neurologically favorable survival were significantly lower both for endotracheal intubation (adjusted OR, 0.41; 95% CI, 0.37-0.45) and for supraglottic airways (adjusted OR, 0.38; 95% CI, 0.36-0.40). In a propensity score-matched cohort (357,228 patients), the adjusted odds of neurologically favorable survival were significantly lower both for

  6. Improving the safety of remote site emergency airway management.

    Science.gov (United States)

    Wijesuriya, Julian; Brand, Jonathan

    2014-01-01

    Airway management, particularly in non-theatre settings, is an area of anaesthesia and critical care associated with significant risk of morbidity & mortality, as highlighted during the 4th National Audit Project of the Royal College of Anaesthetists (NAP4). A survey of junior anaesthetists at our hospital highlighted a lack of confidence and perceived lack of safety in emergency airway management, especially in non-theatre settings. We developed and implemented a multifaceted airway package designed to improve the safety of remote site airway management. A Rapid Sequence Induction (RSI) checklist was developed; this was combined with new advanced airway equipment and drugs bags. Additionally, new carbon dioxide detector filters were procured in order to comply with NAP4 monitoring recommendations. The RSI checklists were placed in key locations throughout the hospital and the drugs and advanced airway equipment bags were centralised in the Intensive Care Unit (ICU). It was agreed with the senior nursing staff that an appropriately trained ICU nurse would attend all emergency situations with new airway resources upon request. Departmental guidelines were updated to include details of the new resources and the on-call anaesthetist's responsibilities regarding checks and maintenance. Following our intervention trainees reported higher confidence levels regarding remote site emergency airway management. Nine trusts within the Northern Region were surveyed and we found large variations in the provision of remote site airway management resources. Complications in remote site airway management due lack of available appropriate drugs, equipment or trained staff are potentially life threatening and completely avoidable. Utilising the intervention package an anaesthetist would be able to safely plan and prepare for airway management in any setting. They would subsequently have the drugs, equipment, and trained assistance required to manage any difficulties or complications

  7. Pediatric Trainees Managing a Difficult Airway: Comparison of Laryngeal Mask Airway, Direct, and Video-Assisted Laryngoscopy

    Directory of Open Access Journals (Sweden)

    Art Ambrosio MD

    2017-05-01

    Full Text Available Objective Difficult airway management is a key skill required by all pediatric physicians, yet training on multiple modalities is lacking. The objective of this study was to compare the rate of, and time to, successful advanced infant airway placement with direct laryngoscopy, video-assisted laryngoscopy, and laryngeal mask airway (LMA in a difficult airway simulator. This study is the first to compare the success with 3 methods for difficult airway management among pediatric trainees. Study Design Randomized crossover pilot study. Setting Tertiary academic medical center. Methods Twenty-two pediatric residents, interns, and medical students were tested. Participants were provided 1 training session by faculty using a normal infant manikin. Subjects then performed all 3 of the aforementioned advanced airway modalities in a randomized order on a difficult airway model of a Robin sequence. Success was defined as confirmed endotracheal intubation or correct LMA placement by the testing instructor in ≤120 seconds. Results Direct laryngoscopy demonstrated a significantly higher placement success rate (77.3% than video-assisted laryngoscopy (36.4%, P = .0117 and LMA (31.8%, P = .0039. Video-assisted laryngoscopy required a significantly longer amount of time during successful intubations (84.8 seconds; 95% CI, 59.4-110.1 versus direct laryngoscopy (44.9 seconds; 95% CI, 33.8-55.9 and LMA placement (36.6 seconds; 95% CI, 24.7-48.4. Conclusions Pediatric trainees demonstrated significantly higher success using direct laryngoscopy in a difficult airway simulator model. However, given the potential lifesaving implications of advanced airway adjuncts, including video-assisted laryngoscopy and LMA placement, more extensive training on adjunctive airway management techniques may be useful for trainees.

  8. Advanced airway management in hoist and longline operations in mountain HEMS - considerations in austere environments: a narrative review This review is endorsed by the International Commission for Mountain Emergency Medicine (ICAR MEDCOM).

    Science.gov (United States)

    Pietsch, Urs; Knapp, Jürgen; Kreuzer, Oliver; Ney, Ludwig; Strapazzon, Giacomo; Lischke, Volker; Albrecht, Roland; Phillips, Patrick; Rauch, Simon

    2018-04-03

    Providing sufficient oxygenation and ventilation is of paramount importance for the survival of emergency patients. Therefore, advanced airway management is one of the core tasks for every rescue team. Endotracheal intubation is the gold standard to secure the airway in the prehospital setting. This review aims to highlight special considerations for advanced airway management preceding human external cargo (HEC) evacuations. We systematically searched MEDLINE, EMBASE, and PubMed in August 2017 for articles on airway management and ventilation in patients before hoist or longline operation in HEMS. Relevant reference lists were hand-searched. Three articles with regard to advanced airway management and five articles concerning the epidemiology of advanced airway management in hoist or longline rescue missions were included. We found one case report regarding ventilation during hoist operations. The exact incidence of advanced airway management before evacuation of a patient by HEC is unknown but seems to be very low (< 5%). There are several hazards which can impede mechanical ventilation of patients during HEC extractions: loss of equipment, hyperventilation, inability to ventilate and consequent hypoxia, as well as inadequacy of monitoring. Advanced airway management prior to HEC operation is rarely performed. If intubation before helicopter hoist operations (HHO) and human cargo sling (HCS) extraction is considered by the rescue team, a risk/benefit analysis should be performed and a clear standard operating procedure (SOP) should be defined. Continuous and rigorous training including the whole crew is required. An international registry on airway management during HEC extraction would be desirable.

  9. Airway management in neuroanesthesiology.

    Science.gov (United States)

    Aziz, Michael

    2012-06-01

    Airway management for neuroanesthesiology brings together some key principles that are shared throughout neuroanesthesiology. This article appropriately targets the cervical spine with associated injury and the challenges surrounding airway management. The primary focus of this article is on the unique airway management obstacles encountered with cervical spine injury or cervical spine surgery, and unique considerations regarding functional neurosurgery are addressed. Furthermore, topics related to difficult airway management for those with rheumatoid arthritis or pituitary surgery are reviewed. Copyright © 2012 Elsevier Inc. All rights reserved.

  10. Management of the difficult airway.

    Science.gov (United States)

    Schwartz, D E; Wiener-Kronish, J P

    1991-09-01

    For clinicians involved in airway management, a plan of action for dealing with the difficult airway or a failed intubation should be developed well in advance of encountering a patient in whom intubation is not routine. When difficulty is anticipated, the equipment necessary for performing a difficult intubation should be immediately available. It also is prudent to have a surgeon skilled in performing a tracheotomy and a criothyroidotomy stand by. The intubation should be attempted in the awake state, preferably using the fiberoptic bronchoscope. The more challenging situation is when the difficult airway is confronted unexpectedly. After the first failed attempt at laryngoscopy, head position should be checked and the patient ventilated with oxygen by mask. A smaller styletted tube and possibly a different laryngoscope blade should be selected for a second attempt at intubation. The fiberoptic bronchoscope and other equipment for difficult intubation should be obtained. A second attempt should then be made. If this is unsuccessful, the patient should be reoxygenated, and assistance including a skilled anesthesiologist and surgeon should be summoned. On a third attempt, traction to the tongue can be applied by an assistant, a tube changer could be used to enter the larynx, or one of the other special techniques previously described can be used. If this third attempt fails, it may be helpful to have a physician more experienced in airway management attempt intubation after oxygen has been administered to the patient. If all attempts are unsuccessful, then invasive techniques to secure the airway will have to be performed.

  11. Clinical review: Management of difficult airways

    Science.gov (United States)

    Langeron, Olivier; Amour, Julien; Vivien, Benoît; Aubrun, Frédéric

    2006-01-01

    Difficulties or failure in airway management are still important factors in morbidity and mortality related to anesthesia and intensive care. A patent and secure airway is essential to manage anesthetized or critically ill patients. Oxygenation maintenance during tracheal intubation is the cornerstone of difficult airway management and is always emphasized in guidelines. The occurrence of respiratory adverse events has decreased in claims for injuries due to inadequate airway management mainly at induction of anesthesia. Nevertheless, claim reports emphasize that airway emergencies, tracheal extubation and/or recovery of anesthesia phases are still associated with death or brain damage, indicating that additional educational support and management strategies to improve patient safety are required. The present brief review analyses specific problems of airway management related to difficult tracheal intubation and to difficult mask ventilation prediction. The review will focus on basic airway management including preoxygenation, and on some oxygenation and tracheal intubation techniques that may be performed to solve a difficult airway. PMID:17184555

  12. Clinical review: management of difficult airways.

    Science.gov (United States)

    Langeron, Olivier; Amour, Julien; Vivien, Benoît; Aubrun, Frédéric

    2006-01-01

    Difficulties or failure in airway management are still important factors in morbidity and mortality related to anesthesia and intensive care. A patent and secure airway is essential to manage anesthetized or critically ill patients. Oxygenation maintenance during tracheal intubation is the cornerstone of difficult airway management and is always emphasized in guidelines. The occurrence of respiratory adverse events has decreased in claims for injuries due to inadequate airway management mainly at induction of anesthesia. Nevertheless, claim reports emphasize that airway emergencies, tracheal extubation and/or recovery of anesthesia phases are still associated with death or brain damage, indicating that additional educational support and management strategies to improve patient safety are required. The present brief review analyses specific problems of airway management related to difficult tracheal intubation and to difficult mask ventilation prediction. The review will focus on basic airway management including preoxygenation, and on some oxygenation and tracheal intubation techniques that may be performed to solve a difficult airway.

  13. Airway management in trauma.

    Science.gov (United States)

    Langeron, O; Birenbaum, A; Amour, J

    2009-05-01

    Maintenance of a patent and prevention of aspiration are essential for the management of the trauma patient, that requires experienced physicians in airway control techniques. Difficulties of the airway control in the trauma setting are increased by the vital failures, the risk of aspiration, the potential cervical spine injury, the combative patient, and the obvious risk of difficult tracheal intubation related to specific injury related to the trauma. Endotracheal intubation remains the gold standard in trauma patient airway management and should be performed via the oral route with a rapid sequence induction and a manual in-line stabilization maneuver, to decrease the risks previously mentioned. Different techniques to control the airway in trauma patients are presented: improvement of the laryngoscopic vision, lighted stylet tracheal intubation, retrograde technique for orotracheal intubation, the laryngeal mask and the intubating laryngeal mask airways, the combitube and cricothyroidotomy. Management of the airway in trauma patients requires regular training in these techniques and the knowledge of complementary techniques allowing tracheal intubation or oxygenation to overcome difficult intubation and to prevent major complications as hypoxemia and aspiration.

  14. Clinical review: Management of difficult airways

    OpenAIRE

    Langeron, Olivier; Amour, Julien; Vivien, Benoît; Aubrun, Frédéric

    2006-01-01

    Difficulties or failure in airway management are still important factors in morbidity and mortality related to anesthesia and intensive care. A patent and secure airway is essential to manage anesthetized or critically ill patients. Oxygenation maintenance during tracheal intubation is the cornerstone of difficult airway management and is always emphasized in guidelines. The occurrence of respiratory adverse events has decreased in claims for injuries due to inadequate airway management mainl...

  15. Paediatric airway management: basic aspects

    DEFF Research Database (Denmark)

    Holm-Knudsen, R J; Rasmussen, L S

    2009-01-01

    Paediatric airway management is a great challenge, especially for anaesthesiologists working in departments with a low number of paediatric surgical procedures. The paediatric airway is substantially different from the adult airway and obstruction leads to rapid desaturation in infants and small...... children. This paper aims at providing the non-paediatric anaesthesiologist with a set of safe and simple principles for basic paediatric airway management. In contrast to adults, most children with difficult airways are recognised before induction of anaesthesia but problems may arise in all children...

  16. Emergency surgical airway management in Denmark

    DEFF Research Database (Denmark)

    Rosenstock, C V; Nørskov, A K; Wetterslev, J

    2016-01-01

    for difficult airway management. RESULTS: In the DAD cohort 27 out of 452 461 patients had an ESA representing an incidence of 0.06 events per thousand (95% CI; 0.04 to 0.08). A total of 12 149/452 461 patients underwent Ear-Nose and Throat (ENT) surgery, giving an ESA incidence among ENT patients of 1.6 events...... of which three failed. Reviewers evaluated airway management as satisfactory in 10/27 patients. CONCLUSIONS: The incidence of ESA in the DAD cohort was 0.06 events per thousand. Among ENT patients, the ESA Incidence was 1.6 events per thousand. Airway management was evaluated as satisfactory for 10......BACKGROUND: The emergency surgical airway (ESA) is the final option in difficult airway management. We identified ESA procedures registered in the Danish Anaesthesia Database (DAD) and described the performed airway management. METHODS: We extracted a cohort of 452 461 adult patients undergoing...

  17. Obstetric airway management

    African Journals Online (AJOL)

    of stomach contents into the lungs during obstetric anesthesia.8 ... Both of the mortalities occurred secondary to solid ... The large number of deaths ... subcategories of patients as a first-line airway device, and are increasingly being ... outline the problems with obstetric airway management, and then focus on a few of the ...

  18. EMS-physicians' self reported airway management training and expertise; a descriptive study from the Central Region of Denmark

    Directory of Open Access Journals (Sweden)

    Rognås Leif K

    2011-02-01

    Full Text Available Abstract Background Prehospital advanced airway management, including prehospital endotracheal intubation is challenging and recent papers have addressed the need for proper training, skill maintenance and quality control for emergency medical service personnel. The aim of this study was to provide data regarding airway management-training and expertise from the regional physician-staffed emergency medical service (EMS. Methods The EMS in this part of The Central Region of Denmark is a two tiered system. The second tier comprises physician staffed Mobile Emergency Care Units. The medical directors of the programs supplied system data. A questionnaire addressing airway management experience, training and knowledge was sent to the EMS-physicians. Results There are no specific guidelines, standard operating procedures or standardised program for obtaining and maintaining skills regarding prehospital advanced airway management in the schemes covered by this study. 53/67 physicians responded; 98,1% were specialists in anesthesiology, with an average of 17,6 years of experience in anesthesiology, and 7,2 years experience as EMS-physicians. 84,9% reported having attended life support course(s, 64,2% an advanced airway management course. 24,5% fulfilled the curriculum suggested for Danish EMS physicians. 47,2% had encountered a difficult or impossible PHETI, most commonly in a patient in cardiac arrest or a trauma patient. Only 20,8% of the physicians were completely familiar with what back-up devices were available for airway management. Conclusions In this, the first Danish study of prehospital advanced airway management, we found a high degree of experience, education and training among the EMS-physicians, but their equipment awareness was limited. Check-outs, guidelines, standard operating procedures and other quality control measures may be needed.

  19. Difficult Airway Response Team: A Novel Quality Improvement Program for Managing Hospital-Wide Airway Emergencies

    Science.gov (United States)

    Mark, Lynette J.; Herzer, Kurt R.; Cover, Renee; Pandian, Vinciya; Bhatti, Nasir I.; Berkow, Lauren C.; Haut, Elliott R.; Hillel, Alexander T.; Miller, Christina R.; Feller-Kopman, David J.; Schiavi, Adam J.; Xie, Yanjun J.; Lim, Christine; Holzmueller, Christine; Ahmad, Mueen; Thomas, Pradeep; Flint, Paul W.; Mirski, Marek A.

    2015-01-01

    Background Difficult airway cases can quickly become emergencies, increasing the risk of life-threatening complications or death. Emergency airway management outside the operating room is particularly challenging. Methods We developed a quality improvement program—the Difficult Airway Response Team (DART)—to improve emergency airway management outside the operating room. DART was implemented by a team of anesthesiologists, otolaryngologists, trauma surgeons, emergency medicine physicians, and risk managers in 2005 at The Johns Hopkins Hospital in Baltimore, Maryland. The DART program had three core components: operations, safety, and education. The operations component focused on developing a multidisciplinary difficult airway response team, standardizing the emergency response process, and deploying difficult airway equipment carts throughout the hospital. The safety component focused on real-time monitoring of DART activations and learning from past DART events to continuously improve system-level performance. This objective entailed monitoring the paging system, reporting difficult airway events and DART activations to a web-based registry, and using in situ simulations to identify and mitigate defects in the emergency airway management process. The educational component included development of a multispecialty difficult airway curriculum encompassing case-based lectures, simulation, and team building/communication to ensure consistency of care. Educational materials were also developed for non-DART staff and patients to inform them about the needs of patients with difficult airways and ensure continuity of care with other providers after discharge. Results Between July 2008 and June 2013, DART managed 360 adult difficult airway events comprising 8% of all code activations. Predisposing patient factors included body mass index > 40, history of head and neck tumor, prior difficult intubation, cervical spine injury, airway edema, airway bleeding, and previous

  20. Difficult airway response team: a novel quality improvement program for managing hospital-wide airway emergencies.

    Science.gov (United States)

    Mark, Lynette J; Herzer, Kurt R; Cover, Renee; Pandian, Vinciya; Bhatti, Nasir I; Berkow, Lauren C; Haut, Elliott R; Hillel, Alexander T; Miller, Christina R; Feller-Kopman, David J; Schiavi, Adam J; Xie, Yanjun J; Lim, Christine; Holzmueller, Christine; Ahmad, Mueen; Thomas, Pradeep; Flint, Paul W; Mirski, Marek A

    2015-07-01

    Difficult airway cases can quickly become emergencies, increasing the risk of life-threatening complications or death. Emergency airway management outside the operating room is particularly challenging. We developed a quality improvement program-the Difficult Airway Response Team (DART)-to improve emergency airway management outside the operating room. DART was implemented by a team of anesthesiologists, otolaryngologists, trauma surgeons, emergency medicine physicians, and risk managers in 2005 at The Johns Hopkins Hospital in Baltimore, Maryland. The DART program had 3 core components: operations, safety, and education. The operations component focused on developing a multidisciplinary difficult airway response team, standardizing the emergency response process, and deploying difficult airway equipment carts throughout the hospital. The safety component focused on real-time monitoring of DART activations and learning from past DART events to continuously improve system-level performance. This objective entailed monitoring the paging system, reporting difficult airway events and DART activations to a Web-based registry, and using in situ simulations to identify and mitigate defects in the emergency airway management process. The educational component included development of a multispecialty difficult airway curriculum encompassing case-based lectures, simulation, and team building/communication to ensure consistency of care. Educational materials were also developed for non-DART staff and patients to inform them about the needs of patients with difficult airways and ensure continuity of care with other providers after discharge. Between July 2008 and June 2013, DART managed 360 adult difficult airway events comprising 8% of all code activations. Predisposing patient factors included body mass index >40, history of head and neck tumor, prior difficult intubation, cervical spine injury, airway edema, airway bleeding, and previous or current tracheostomy. Twenty

  1. Airway management by physician-staffed Helicopter Emergency Medical Services - a prospective, multicentre, observational study of 2,327 patients.

    Science.gov (United States)

    Sunde, Geir Arne; Heltne, Jon-Kenneth; Lockey, David; Burns, Brian; Sandberg, Mårten; Fredriksen, Knut; Hufthammer, Karl Ove; Soti, Akos; Lyon, Richard; Jäntti, Helena; Kämäräinen, Antti; Reid, Bjørn Ole; Silfvast, Tom; Harm, Falko; Sollid, Stephen J M

    2015-08-07

    Despite numerous studies on prehospital airway management, results are difficult to compare due to inconsistent or heterogeneous data. The objective of this study was to assess advanced airway management from international physician-staffed helicopter emergency medical services. We collected airway data from 21 helicopter emergency medical services in Australia, England, Finland, Hungary, Norway and Switzerland over a 12-month period. A uniform Utstein-style airway template was used for collecting data. The participating services attended 14,703 patients on primary missions during the study period, and 2,327 (16 %) required advanced prehospital airway interventions. Of these, tracheal intubation was attempted in 92 % of the cases. The rest were managed with supraglottic airway devices (5 %), bag-valve-mask ventilation (2 %) or continuous positive airway pressure (0.2 %). Intubation failure rates were 14.5 % (first-attempt) and 1.2 % (overall). Cardiac arrest patients showed significantly higher first-attempt intubation failure rates (odds ratio: 2.0; 95 % CI: 1.5-2.6; p < 0.001) compared to non-cardiac arrest patients. Complications were recorded in 13 %, with recognised oesophageal intubation being the most frequent (25 % of all patients with complications). For non-cardiac arrest patients, important risk predictors for first-attempt failure were patient age (a non-linear association) and administration of sedatives (reduced failure risk). The patient's sex, provider's intubation experience, trauma type (patient category), indication for airway intervention and use of neuromuscular blocking agents were not risk factors for first-attempt intubation failure. Advanced airway management in physician-staffed prehospital services was performed frequently, with high intubation success rates and low complication rates overall. However, cardiac arrest patients showed significantly higher first-attempt failure rates compared to non-cardiac arrest patients. All

  2. Airway management in a patient with bullous pemphigoid

    International Nuclear Information System (INIS)

    Yasir, M.; Khan, F.A.

    2013-01-01

    Airway management in patients with pemphigoid lesions has anaesthetic implications. We report a case of a 23 years old female with bullous pemphigoid who presented with laryngeal stenosis and critical airway narrowing. The airway was initially managed with jet ventilation. Anaesthesia was maintained with propofol infusion and ventilation was performed by introducing a size 10 French gauge suction catheter through the stenotic laryngeal orifice. Thirty minutes into anaesthesia, she developed subcutaneous emphysema and decreased air entry on right side of the chest but remained hemodynamically stable. The airway was further managed by tracheostomy. This case report highlights complications that can occur during the anaesthetic management of such cases. (author)

  3. Impact of Video Laryngoscopy on Advanced Airway Management by Critical Care Transport Paramedics and Nurses Using the CMAC Pocket Monitor.

    Science.gov (United States)

    Boehringer, Bradley; Choate, Michael; Hurwitz, Shelley; Tilney, Peter V R; Judge, Thomas

    2015-01-01

    Accurate endotracheal intubation for patients in extremis or at risk of physiologic decompensation is the gold standard for emergency medicine. Field intubation is a complex process and time to intubation, number of attempts, and hypoxia have all been shown to correlate with increases in morbidity and mortality. Expanding laryngoscope technology which incorporates active video, in addition to direct laryngoscopy, offers providers improved and varied tools to employ in management of the advanced airway. Over a nine-year period a helicopter emergency medical services team, comprised of a flight paramedic and flight nurse, intended to intubate 790 patients. Comparative data analysis was performed and demonstrated that the introduction of the CMAC video laryngoscope improved nearly every measure of success in airway management. Overall intubation success increased from 94.9% to 99.0%, first pass success rates increased from 75.4% to 94.9%, combined first and second pass success rates increased from 89.2% to 97.4%, and mean number of intubation attempts decreased from 1.33 to 1.08.

  4. Airway Management of the Patient with Maxillofacial Trauma: Review of the Literature and Suggested Clinical Approach

    Directory of Open Access Journals (Sweden)

    Michal Barak

    2015-01-01

    Full Text Available According to the Advanced Trauma Life Support recommendations for managing patients with life-threatening injuries, securing the airway is the first task of a primary caregiver. Airway management of patients with maxillofacial trauma is complex and crucial because it can dictate a patient’s survival. Securing the airway of patients with maxillofacial trauma is often extremely difficult because the trauma involves the patient’s airway and their breathing is compromised. In these patients, mask ventilation and endotracheal intubation are anticipated to be difficult. Additionally, some of these patients may not yet have been cleared of a cervical spine injury, and all are regarded as having a full stomach and having an increased risk of regurgitation and pulmonary aspiration. The requirements of the intended maxillofacial operation may often preclude the use of an oral intubation tube, and alternative methods for securing the airway should be considered before the start of the surgery. In order to improve the clinical outcome of patients with maxillofacial trauma, cooperation between maxillofacial surgeons, anesthesiologists, and trauma specialists is needed. In this review, we discuss the complexity and difficulties of securing the airway of patients with maxillofacial trauma and present our approach for airway management of such patients.

  5. Crisis management during anaesthesia: obstruction of the natural airway.

    Science.gov (United States)

    Visvanathan, T; Kluger, M T; Webb, R K; Westhorpe, R N

    2005-06-01

    Obstruction of the natural airway, while usually easily recognised and managed, may present simply as desaturation, have an unexpected cause, be very difficult to manage, and have serious consequences for the patient. To examine the role of a previously described core algorithm "COVER ABCD-A SWIFT CHECK", supplemented by a specific sub-algorithm for obstruction of the natural airway, in the management of acute airway obstruction occurring in association with anaesthesia. The potential performance for this structured approach for each of the relevant incidents among the first 4000 reported to the Australian Incident Monitoring Study (AIMS) was compared with the actual management as reported by the anaesthetists involved. There were 62 relevant incidents among the first 4000 reports to the AIMS. It was considered that the correct use of the structured approach would have led to earlier recognition of the problem and/or better management in 11% of cases. Airway management is a fundamental anaesthetic responsibility and skill. Airway obstruction demands a rapid and organised approach to its diagnosis and management and undue delay usually results in desaturation and a potential threat to life. An uncomplicated pre-learned sequence of airway rescue instructions is an essential part of every anaesthetist's clinical practice requirements.

  6. Airway management after maxillectomy with free flap reconstruction.

    Science.gov (United States)

    Brickman, Daniel S; Reh, Douglas D; Schneider, Daniel S; Bush, Ben; Rosenthal, Eben L; Wax, Mark K

    2013-08-01

    Maxillectomy defects require complex 3-dimensional reconstructions often best suited to microvascular free tissue transfer. Postoperative airway management during this procedure has little discussion in the literature and is often dictated by surgical dogma. The purpose of this article was to review our experience in order to evaluate the effect of airway management on perioperative outcomes in patients undergoing maxillectomy with free flap reconstruction. A retrospective chart review was performed on patients receiving maxillectomy with microvascular reconstruction at 2 institutions between 1999 and 2011. Patient's airways were managed with or without elective tracheotomy at the surgical team's discretion and different perioperative outcomes were measured. The primary outcome was incidence of airway complication including pneumonia and need for further airway intervention. Secondary outcome was measured as factors leading to perioperative performance of the tracheotomy. Seventy-nine of 143 patients received elective tracheotomy perioperatively. The incidence of airway complication was equivalent between groups (10.1% vs 9.4%; p = .89). Patients with cardiopulmonary comorbidities were more likely to receive perioperative tracheotomy (74.1% vs 50.9%; p = .03) without a difference in airway complications. Other patient cofactors did not have an impact on perioperative tracheotomy or airway complication rate. Elective tracheotomy may safely be avoided in a subset of patients undergoing maxillectomy with microvascular reconstruction. Elective tracheotomy should be considered in patients with cardiopulmonary risk factors. Copyright © 2012 Wiley Periodicals, Inc.

  7. Pharyngeal Airway Space Changes After Condylar Replacement and Mandibular Advancement Surgery.

    Science.gov (United States)

    Yuen, Holly; Rossouw, P Emile; Wolford, Larry M; Wang, Hongyue

    2018-01-03

    The aim of this study was to examine the total volume and cross-sectional areas of the pharyngeal airway after bilateral condylar replacement and mandibular advancement surgery. A total of 137 patients (126 women and 11 men) underwent bilateral temporomandibular joint total joint replacement performed by 1 surgeon. A subsample of 30 patients who underwent condylar replacement and only mandibular advancement were evaluated for impact on the airway. Measurements were taken preoperatively, postoperatively, and at a follow-up 1 year after surgery on cone beam computed tomography scans. InVivoDental 3-dimensional imaging (Anatomage, San Jose, CA) was used to measure airway space regarding total volume (in cubic centimeters); minimum cross-sectional area (in square millimeters); minimum cross sections of the first, second, and third cervical vertebrae; and whether the patient had mandibular retrognathia before surgery. A second operator was used to test for interoperator error. Descriptive and bivariate statistics were computed, and the P value was set at .05. There was a significant increase in all measurements at the follow-up visit compared with the preoperative visit. There were no significant differences between groups based on simultaneous Le Fort I surgery, mandibular retrognathia, and gender. However, there were statistically significant differences in cross sections 1 and 2, as well as minimum cross-sectional area, regarding age. Condylar replacement and mandibular advancement have a significant association with an increase in airway space. The intraclass correlation coefficient showed excellent agreement between interoperator measurements. Patients undergoing bilateral temporomandibular joint replacement and mandibular advancement surgery showed an increase in pharyngeal airway space at a 1-year follow-up. In this study, age was significantly associated with the cross-sectional areas of the airway, with older patients having smaller values. Copyright © 2018

  8. Airway management and morbid obesity

    DEFF Research Database (Denmark)

    Kristensen, Michael S

    2010-01-01

    Morbidly obese patients present with excess fatty tissue externally on the breast, neck, thoracic wall and abdomen and internally in the mouth, pharynx and abdomen. This excess tissue tends to make access (intubation, tracheostomy) to and patency (during sedation or mask ventilation) of the upper...... in morbidly obese patients and should be followed by actions to counteract atelectasis formation. The decision as to weather to use a rapid sequence induction, an awake intubation or a standard induction with hypnotics should depend on the thorough airway examination and comorbidity and should not be based...... solely on whether morbid obesity is present or not. It is important to ensure sufficient depth of anaesthesia before initiating manipulation of the airway because inadequate anaesthesia depth predisposes to aspiration if airway management becomes difficult. The intubating laryngeal mask airway is more...

  9. Retrotracheal Extraskeletal Ewing's Sarcoma: Case Report and Discussion on Airway Management.

    Science.gov (United States)

    Van Der Meer, Graeme; Linkhorn, Hannah; Gruber, Maayan; Mahadevan, Murali; Barber, Colin

    2017-03-01

    Extraskeletal Ewing's sarcoma is a rare tumor, and the management of airway compromise in case of cervical Ewing's sarcoma has not been established. This report describes the case of a patient with retrotracheal Ewing's sarcoma and discusses a successful approach to airway management. A 12-year-old male presented with a 2-week history of sore throat and sleep-disordered breathing and 48 hours of stridor. Imaging confirmed a retrotracheal soft tissue mass with airway compromise. A planned and controlled approach to his airway management resulted in a secure airway prior to definitive treatment.

  10. Successful difficult airway management of a child with Coffin-siris syndrome.

    Science.gov (United States)

    Ozkan, Ahmet Selim; Akbas, Sedat; Yalin, Mehmet Ridvan; Ozdemir, Emine; Koylu, Zeynep

    2017-08-01

    Management of airway in patients who have Coffin-Siris syndrome (CSS) is often problematic because most of these patients have difficult airway. NTI via C-MAC VL is an useful alternative to direct laryngoscope for orotracheal intubation in airway and anesthetic management in a case of CSS. Alternative airway devices should be readily available.

  11. [Airway management in a man with ankylosing spondylitis].

    Science.gov (United States)

    Gil, S; Jamart, V; Borrás, R; Miranda, A

    2007-02-01

    We report a case of difficult airway management in a 41-year-old man with ankylosing spondylitis who was scheduled for total left hip replacement surgery. After several failed attempts to achieve regional anesthesia, we converted to general anesthesia with orotracheal intubation using a fiberoptic bronchoscope. Ankylosing spondylitis leads to fibrosis, ossification, and ankylosis along the spinal column and sacroiliac articulations. Cervical column and atlantooccipital articulation mobility are reduced and in severe cases the cervical vertebrae become fixed in a flexed position. This portion of the spine is also the most susceptible to fracture, particularly in hyperextension, an event that could lead to damage to the cervical spinal cord during maneuvers to manage the airway. Patients with this condition may also have temporomandibular joint involvement, further complicating airway management. We report the case of a patient with ankylosing spondylitis with fixation along the entire spine. The airway was managed by intubation with a fiberoptic bronchoscope. Spontaneous ventilation was maintained during the maneuver, and sedation was achieved with perfusion of remifentanil as the only anesthetic agent following failure of intradural anesthesia.

  12. Successful difficult airway management of a child with Coffin?siris syndrome

    OpenAIRE

    Ozkan, Ahmet Selim; Akbas, Sedat; Yalin, Mehmet Ridvan; Ozdemir, Emine; Koylu, Zeynep

    2017-01-01

    Key Clinical Message Management of airway in patients who have Coffin?Siris syndrome (CSS) is often problematic because most of these patients have difficult airway. NTI via C?MAC VL is an useful alternative to direct laryngoscope for orotracheal intubation in airway and anesthetic management in a case of CSS. Alternative airway devices should be readily available.

  13. Airway Management in a Patient With Tracheal Disruption due to Penetrating Neck Trauma With Hollow Point Ammunition: A Case Report.

    Science.gov (United States)

    Johnson, Angela M; Hill, James L; Zagorski, Dave J; McClain, Joseph M; Maronian, Nicole C

    2018-05-01

    Rapid sequence induction and intubation was performed for a patient in respiratory distress after a gunshot wound to the neck. Resistance was noted distal to vocal cords. With a bronchoscope unavailable, the endotracheal tube was advanced with a corkscrew maneuver. Subcutaneous emphysema had developed. The endotracheal tube was advanced into the right mainstem with adequate ventilation. Imaging illustrated tracheoesophageal injury. The patient was emergently explored. An intraluminal bullet was removed, lateral wall tracheal defect was repaired, and a tracheostomy was placed. The intubating provider should secure the airway by the method they are most comfortable, have high suspicion of airway injury, and prepare to manage airway disruption.

  14. Outcome of advanced lung cancer with central airway obstruction versus without central airway obstruction

    Science.gov (United States)

    Verma, Akash; Goh, Soon Keng; Tai, Dessmon Y.H.; Kor, Ai Ching; Seow, Debra G.F.; Sein, Zin Nge Nge; Samol, Jens; Abisheganaden, John

    2018-01-01

    Patients with central airway obstruction (CAO) from advanced lung cancer present with significant morbidity and are assumed to have lower survival. Hence, they are offered only palliative support. We asked if patients who have advanced lung cancer with CAO (recanalised and treated) will behave similarly to those with advanced lung cancer without CAO. This study was a retrospective review of the medical records of the patients managed for advanced lung cancer during 2010 and 2015 at our institution. 85 patients were studied. Median survival and 1-, 2- and 5-year survival were 5.8 months, 30.3%, 11.7% and 2.3% versus 9.3 months, 35.7%, 9.6% and 4.7%, respectively, in the CAO and no CAO groups (p=0.30). More patients presented with respiratory failure (15 (35%) versus none; p=0.0001) and required assisted mechanical ventilation (10 (23.3%) versus none; p=0.001) in the CAO group compared with the no CAO group. Fewer patients received chemotherapy in the CAO group (11 (25.5%)) compared with the no CAO group (23 (54.7%); p=0.008). There was no difference in survival among patients with advanced lung cancer whether they presented with CAO or without CAO. Survival was similar to those without CAO in patients with recanalised CAO despite greater morbidity and lesser use of chemotherapy, strongly advocating bronchoscopic recanalisation of CAO. These findings dispel the nihilism associated with such cases. PMID:29637076

  15. Airway management and morbid obesity

    DEFF Research Database (Denmark)

    Kristensen, Michael S

    2010-01-01

    Morbidly obese patients present with excess fatty tissue externally on the breast, neck, thoracic wall and abdomen and internally in the mouth, pharynx and abdomen. This excess tissue tends to make access (intubation, tracheostomy) to and patency (during sedation or mask ventilation) of the upper...... airway and the function of the lungs (decreased residual capacity and aggravated ventilation perfusion mismatch) worse than in lean patients. Proper planning and preparation of airway management is essential, including elevation of the patient's upper body, head and neck. Preoxygenation is mandatory...

  16. Anaesthetic management of the airway in The Netherlands : a postal survey

    NARCIS (Netherlands)

    Borg, PAJ; Stuart, C; Dercksen, B; Eindhoven, GB

    2001-01-01

    Backgound and objective A postal survey was conducted in order to investigate current practice in airway management amongst Dutch anaesthetists and to investigate the role of recent training and the role of an 'Access to the Airway' airway management course. Methods A questionnaire containing 27

  17. The Availability of Advanced Airway Equipment and Experience with Videolaryngoscopy in the UK: Two UK Surveys

    Directory of Open Access Journals (Sweden)

    Rachel L. Gill

    2015-01-01

    Full Text Available Fibreoptic intubation, high frequency jet ventilation, and videolaryngoscopy form part of the Royal College of Anaesthetists compulsory higher airway training module. Curriculum delivery requires equipment availability and competent trainers. We sought to establish (1 availability of advanced airway equipment in UK hospitals (Survey I and (2 if those interested in airway management (Difficult Airway Society (DAS members had access to videolaryngoscopes, their basic skill levels and teaching competence with these devices and if they believed that videolaryngoscopy was replacing conventional or fibreoptic laryngoscopy (Survey II. Data was obtained from 212 hospitals (73.1% and 554 DAS members (27.6%. Most hospitals (202, 99% owned a fiberscope, 119 (57.5% had a videolaryngoscope, yet only 62 (29.5% had high frequency jet ventilators. DAS members had variable access to videolaryngoscopes with Airtraq 319 (59.6% and Glidescope 176 (32.9% being the most common. More DAS members were happy to teach or use videolaryngoscopes in a difficult airway than those who had used them more than ten times. The majority rated Macintosh laryngoscopy as the most important airway skill. Members rated fibreoptic intubation and videolaryngoscopy skills equally. Our surveys demonstrate widespread availability of fibreoptic scopes, limited availability of videolaryngoscopes, and limited numbers of experienced videolaryngoscope tutors.

  18. Airway Management in a Patient with Wolf-Hirschhorn Syndrome.

    Science.gov (United States)

    Gamble, John F; Kurian, Dinesh J; Udani, Andrea G; Greene, Nathaniel H

    2016-01-01

    We present a case of a 3-month-old female with Wolf-Hirschhorn syndrome (WHS) undergoing general anesthesia for laparoscopic gastrostomy tube placement with a focus on airway management. WHS is a rare 4p microdeletion syndrome resulting in multiple congenital abnormalities, including craniofacial deformities. Microcephaly, micrognathia, and glossoptosis are common features in WHS patients and risk factors for a pediatric airway that is potentially difficult to intubate. We discuss anesthesia strategies for airway preparation and management in a WHS patient requiring general anesthesia with endotracheal intubation.

  19. Airway Management in a Patient with Wolf-Hirschhorn Syndrome

    Directory of Open Access Journals (Sweden)

    John F. Gamble

    2016-01-01

    Full Text Available We present a case of a 3-month-old female with Wolf-Hirschhorn syndrome (WHS undergoing general anesthesia for laparoscopic gastrostomy tube placement with a focus on airway management. WHS is a rare 4p microdeletion syndrome resulting in multiple congenital abnormalities, including craniofacial deformities. Microcephaly, micrognathia, and glossoptosis are common features in WHS patients and risk factors for a pediatric airway that is potentially difficult to intubate. We discuss anesthesia strategies for airway preparation and management in a WHS patient requiring general anesthesia with endotracheal intubation.

  20. Randomized crossover comparison of the laryngeal mask airway classic with i-gel laryngeal mask airway in the management of difficult airway in post burn neck contracture patients

    Directory of Open Access Journals (Sweden)

    Jeevan Singh

    2012-01-01

    Full Text Available Purpose: The objective of the study was to compare the performance of i-gel supraglottic airway with cLMA in difficult airway management in post burn neck contracture patients and assess the feasibility of i-gel use for emergency airway management in difficult airway situation with reduced neck movement and limited mouth opening. Methods: Prospective, crossover, randomized controlled trial was performed amongst forty eight post burn neck contracture patients with limited mouth opening and neck movement. i-gel and cLMA were placed in random order in each patient. Primary outcome was overall success rate. Other measurements were time to successful ventilation, airway leak pressure, fiberoptic glottic view, visualization of square wave pattern. Results: Success rate for the i-gel was 91.7% versus 79.2% for the cLMA. i-gel required shorter insertion time (19.3 seconds vs. 23.5 seconds, P=0.000. Airway leak pressure difference was statistically significant (i-gel 21.2 cm H20; cLMA 16.9 cm H 2 0; P=0.00. Fiberoptic view through the i-gel showed there were less epiglottic downfolding and better fiberoptic view of the glottis than cLMA. Overall agreement in insertion outcome for i-gel was 22/24 (91.7% successes and 2/24(8.3% failure and for cLMA, 19/24 (79.16% successes and 5/24 (16.7% failure in the first attempt. Conclusion: The i-gel is cheap, effective airway device which is easier to insert and has better clinical performance in the difficult airway management of the airway in the post burn contracture of the neck. Our study shows that i-gel is feasible for emergency airway management in difficult airway situation with reduced neck movement and limited mouth opening in post burn neck.

  1. Difficult airway management patterns among anesthesiologists practicing in Cairo University Hospitals

    Directory of Open Access Journals (Sweden)

    Neamat I. Abdel rahman

    2016-01-01

    Conclusion: The practice of anesthesiologists in Cairo university hospitals is close to the recommendations of the ASA guidelines for management of difficult airway. There is increased skills in fiberoptic bronchoscopes and SGA with increased frequency of difficult airway managements training courses; however, they need to improve their skills in awake fiberoptic intubations technique and they need to be trained on invasive airway management access to close the discrepancy between their theoretical choices in different situations and their actual skills.

  2. Use of a Flexible Intubating Scope in Combination with a Channeled Video Laryngoscope for Managing a Difficult Airway in the Emergency Department.

    Science.gov (United States)

    Sowers, Nicholas; Kovacs, George

    2016-02-01

    Difficulty with intubation is not uncommon in the emergency setting. Video laryngoscopes (VLs) are commonly used to manage the difficult airway in the emergency department (ED). Intubation using a flexible bronchoscope, while considered the gold standard for managing the anticipated difficult airway in the operating room, is not commonly used in the ED. We present a case describing VL-assisted flexible scope intubation performed in the ED as a novel feasible approach to managing the difficult airway. A 65-year-old male, post cardiac arrest, with multiple unsuccessful attempts at prehospital intubation had rapid sequence intubation (RSI) performed and, despite obtaining a view with a King Vision™ VL, the skilled operator was unable to advance the endotracheal tube (ETT). An Ambu™ aScope3 flexible intubating scope (FIS) was placed through the ETT loaded in the channel of the King Vision and advanced through the cords to a position proximal to the carina. The ETT was then advanced easily over the FIS and down the trachea. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: Although video laryngoscopy is commonly used in the ED, intubation can prove difficult, despite having an adequate view of the glottis. Use of an FIS, however, through a channeled VL makes navigation of the ETT easier and facilitates tube advancement, which can be difficult with VL. Channeled VL-assisted use of an FIS is a viable option for managing the difficult airway. Copyright © 2016 Elsevier Inc. All rights reserved.

  3. Anatomic and physiopathologic changes affecting the airway of the elderly patient: implications for geriatric-focused airway management

    Directory of Open Access Journals (Sweden)

    Johnson KN

    2015-12-01

    Full Text Available Kathleen N Johnson,1 Daniel B Botros,1 Leanne Groban,1–4 Yvon F Bryan11Department of Anesthesiology, Wake Forest School of Medicine, Winston-Salem, NC, USA; 2Section on Molecular Medicine, Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, NC, USA; 3Sticht Center on Aging, Wake Forest School of Medicine, Winston-Salem, NC, USA; 4Hypertension and Vascular Research Center, Wake Forest School of Medicine, Winston-Salem, NC, USAAbstract: There are many anatomical, physiopathological, and cognitive changes that occur in the elderly that affect different components of airway management: intubation, ventilation, oxygenation, and risk of aspiration. Anatomical changes occur in different areas of the airway from the oral cavity to the larynx. Common changes to the airway include tooth decay, oropharyngeal tumors, and significant decreases in neck range of motion. These changes may make intubation challenging by making it difficult to visualize the vocal cords and/or place the endotracheal tube. Also, some of these changes, including but not limited to, atrophy of the muscles around the lips and an edentulous mouth, affect bag mask ventilation due to a difficult face-mask seal. Physiopathologic changes may impact airway management as well. Common pulmonary issues in the elderly (eg, obstructive sleep apnea and COPD increase the risk of an oxygen desaturation event, while gastrointestinal issues (eg, achalasia and gastroesophageal reflux disease increase the risk of aspiration. Finally, cognitive changes (eg, dementia not often seen as related to airway management may affect patient cooperation, especially if an awake intubation is required. Overall, degradation of the airway along with other physiopathologic and cognitive changes makes the elderly population more prone to complications related to airway management. When deciding which airway devices and techniques to use for intubation, the clinician should also consider the

  4. Management of airway obstruction and stridor in pediatric patients [digest].

    Science.gov (United States)

    Marchese, Ashley; Langhan, Melissa L; Pade, Kathryn H

    2017-11-22

    Stridor is a result of turbulent air-flow through the trachea from upper airway obstruction, and although in children it is often due to croup, it can also be caused by noninfectious and/or congenital conditions as well as life-threatening etiologies. The history and physical examination guide initial management, which includes reduction of airway inflammation, treatment of bacterial infection, and, less often, imaging, emergent airway stabilization, or surgical management. This issue discusses the most common as well as the life-threatening etiologies of acute and chronic stridor and its management in the emergency department. [Points & Pearls is a digest of Pediatric Emergency Medicine Practice].

  5. Management of difficult airway in intratracheal tumor surgery

    Directory of Open Access Journals (Sweden)

    Agarwal Surendra K

    2005-06-01

    Full Text Available Abstract Background Tracheal malignancies are usual victim of delay in diagnosis by virtue of their symptoms resembling asthma. Sometimes delayed diagnosis may lead to almost total airway obstruction. For difficult airways, not leaving any possibility of manipulation into neck region or endoscopic intervention, femorofemoral cardiopulmonary bypass can be a promising approach. Case Presentation We are presenting a case of tracheal adenoid cystic carcinoma (cylindroma occupying about 90% of the tracheal lumen. It was successfully managed by surgical excision of mass by sternotomy and tracheotomy under femorofemoral cardiopulmonary bypass (CPB. Conclusion Any patient with recurrent respiratory symptoms should be evaluated by radiological and endoscopic means earlier to avoid delay in diagnosis of such conditions. Femorofemoral cardiopulmonary bypass is a relatively safe way of managing certain airway obstructions.

  6. The impact of airway management on quality of cardiopulmonary resuscitation: an observational study in patients during cardiac arrest.

    Science.gov (United States)

    Yeung, Joyce; Chilwan, Mehboob; Field, Richard; Davies, Robin; Gao, Fang; Perkins, Gavin D

    2014-07-01

    Minimising interruptions in chest compressions is associated with improved survival from cardiac arrest. Current in-hospital guidelines recommend continuous chest compressions after the airway is secured on the premise that this will reduce no flow time. The aim of this study was to determine the effect of advanced airway use on the no flow ratio and other measures of CPR quality. Consecutive adult patients who sustained an in-hospital cardiac arrest were enrolled in this prospective observational study. The quality of CPR was measured using the Q-CPR device (Phillips, UK) before and after an advanced airway device (endotracheal tube [ET] or laryngeal mask airway [LMA]) was inserted. Patients receiving only bag-mask ventilation were used as the control cohort. The primary outcome was no flow ratio (NFR). Secondary outcomes were chest compression rate, depth, compressions too shallow, compressions with leaning, ventilation rate, inflation time, change in impedance and time required to successfully insert airway device. One hundred patients were enrolled in the study (2008-2011). Endotracheal tube and LMA placement took similar durations (median 15.8 s (IQR 6.8-19.4) vs. LMA median 8.0s (IQR 5.5-15.9), p=0.1). The use of an advanced airway was associated with improved no flow ratios (endotracheal tube placement (n=50) improved NFR from baseline median 0.24 IQR 0.17-0.40) to 0.15 to (IQR 0.09-0.28), p=0.012; LMA (n=25) from median 0.28 (IQR 0.23-0.40) to 0.13 (IQR 0.11- 0.19), p=0.0001). There was no change in NFR in patients managed solely with bag valve mask (BVM) (n=25) (median 0.29 (IQR 0.18-0.59) vs. median 0.26 (IQR 0.12-0.37), p=0.888). There was no significant difference in time taken to successfully insert the airway device between the two groups. The use of an advanced airway (ETT or LMA) during in-hospital cardiac arrest was associated with improved no flow ratio. Further studies are required to determine the effect of airway devices on overall patient

  7. Airway management in an infant with congenital trismus: the role of ...

    African Journals Online (AJOL)

    Various airway management options include blind intubation, retrograde intubation and fibre-optic intubation, failing which a tracheostomy might be needed. We present the airway management of a seven-month-old infant with congenital trismus who was scheduled for corrective surgery. After several unsuccessful attempts ...

  8. Difficult airway management of children in ambulatory anesthesia: challenges and solutions

    Directory of Open Access Journals (Sweden)

    Huang AS

    2016-11-01

    Full Text Available Andrea S Huang,1 Lindsey Rutland,2 John Hajduk,1 Narasimhan Jagannathan1,2 1Department of Pediatric Anesthesia, Ann and Robert H. Lurie Children’s Hospital of Chicago, 2Department of Anesthesiology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA Abstract: As the field of pediatric ambulatory anesthesia expands, anesthesiologists can anticipate encountering an increasing number of patients with expected and unexpected difficult airways. This unique setting and patient population both present challenges in making a decision whether and how to safely proceed in the case of a child with a difficult airway. A host of patient, provider, procedure, and facility-specific factors should be considered. Providers should understand the differences between the pediatric and adult airway, recognize common features and syndromes associated with difficult airways, and be comfortable with different airway equipment and techniques available in the ambulatory setting. Early anticipation, a comprehensive patient assessment, and a clear decision-making algorithm with multiple airway management plans are all critical in safely and effectively managing these patients. These issues and recommendations will be discussed in this comprehensive narrative review. Keywords: difficult airway, pediatrics, ambulatory surgery, airway devices, children

  9. Fiberoptic intubation through laryngeal mask airway for management of difficult airway in a child with Klippel-Feil syndrome

    Directory of Open Access Journals (Sweden)

    Ravi Bhat

    2014-01-01

    Full Text Available The ideal airway management modality in pediatric patients with syndromes like Klippel-Feil syndrome is a great challenge and is technically difficult for an anesthesiologist. Half of the patients present with the classic triad of short neck, low hairline, and fusion of cervical vertebra. Numerous associated anomalies like scoliosis or kyphosis, cleft palate, respiratory problems, deafness, genitourinary abnormalities, Sprengel′s deformity (wherein the scapulae ride high on the back, synkinesia, cervical ribs, and congenital heart diseases may further add to the difficulty. Fiberoptic bronchoscopy alone can be technically difficult and patient cooperation also becomes very important, which is difficult in pediatric patients. Fiberoptic bronchoscopy with the aid of supraglottic airway devices is a viable alternative in the management of difficult airway in children. We report a case of Klippel-Feil syndrome in an 18-month-old girl posted for cleft palate surgery. Imaging of spine revealed complete fusion of the cervical vertebrae with hypoplastic C3 and C6 vertebrae and thoracic kyphosis. We successfully managed airway in this patient by fiberoptic intubation through classic laryngeal mask airway (LMA. After intubation, we used second smaller endotracheal tube (ETT to stabilize and elongate the first ETT while removing the LMA.

  10. Management of the Upper Airway in Cystic Fibrosis

    Science.gov (United States)

    Illing, Elisa A.; Woodworth, Bradford A.

    2015-01-01

    Purpose of Review Upper airway disease engenders significant morbidity for patients with cystic fibrosis and is increasingly recognized as having a much greater role in pulmonary outcomes and quality of life than originally believed. Widespread disparate therapeutic strategies for cystic fibrosis chronic rhinosinusitis underscore the absence of a standardized treatment paradigm. This review outlines the most recent evidence-based trends in the management of upper airway disease in cystic fibrosis. Recent Findings The unified airway theory proposes that the sinuses are a focus of initial bacterial colonization which seeds the lower airway and may play a large role in maintaining lung infections. Mounting evidence suggests more aggressive treatment of the sinuses may confer significant improvement in pulmonary disease and quality of life outcomes in cystic fibrosis patients. However, there is a lack of high-level evidence regarding medical and surgical management of cystic fibrosis chronic rhinosinusitis that makes generalizations difficult. Summary Well designed clinical trials with long-term follow-up concerning medical and surgical interventions for cystic fibrosis sinus disease are required to establish standardized treatment protocols, but increased interest in the sinuses as a bacterial reservoir for pulmonary infections has generated considerable attention. PMID:25250804

  11. Outcomes following prehospital airway management in severe ...

    African Journals Online (AJOL)

    Backgound. Prevention of hypoxia and thus secondary brain injury in traumatic brain injury (TBI) is critical. However there is controversy regarding the role of endotracheal intubation in the prehospital management of TBI. Objective. To describe the outcome of TBI with various airway management methods employed in the ...

  12. Airway management of a difficult airway due to prolonged enlarged goiter using loco-sedative technique

    Directory of Open Access Journals (Sweden)

    Divya Srivastava

    2013-01-01

    Full Text Available Appropriate airway management is an essential part of anesthesiologist′s role. Huge goiters can lead to distorted airway and difficulty in endotracheal intubation. In this report, we present a case of a 67-year-old woman with a huge toxic multinodular thyroid swelling, gradually increasing in size for last 20 years, where trachea was successfully intubated. She had a history of deferred surgery in June 2007 due to inability to intubate, despite 5-6 attempts using different laryngoscopes, bougie, and stylet. Patient was re-admitted in December 2011 for the surgery and was successfully intubated this time with help of fiberoptic intubation using loco-sedative technique. Patient was electively kept intubated postoperatively in view of chances of tracheomalacia due to prolonged large goiter. She was extubated successfully on post-op day 2 after demonstration of leak around trachea following tracheal tube cuff deflation. The different techniques of managing the difficult airway in these patients are discussed.

  13. Successful airway management with King Vision device in a child with Morquio syndrome: case report

    Directory of Open Access Journals (Sweden)

    Lina Maritza Guerra

    2017-09-01

    Full Text Available Morquio syndrome also called type IV mucopolysaccharidosis, is a condition produced by lysosomal deposit. Morquio syndrome have several implications in the airway management because is characterized by C1-C2, instability, short height, cervical spine instability, odontoid hypoplasia, and Pectus carinatum, this, in addition to airway anatomy distortion. Case summary: This is a case report of successful airway management with video laryngoscopy of a child whit anticipated difficult airway whit Morquio syndrome. Conclusion: The video laryngoscopes are a good choice for management of anticipated difficult airway in child patients.

  14. Advanced large airway CT imaging in children: evolution from axial to 4-D assessment

    International Nuclear Information System (INIS)

    Lee, Edward Y.; Zucker, Evan J.; Restrepo, Ricardo; Daltro, Pedro; Boiselle, Phillip M.

    2013-01-01

    Continuing advances in multidetector computed tomography (MDCT) technology are revolutionizing the non-invasive evaluation of congenital and acquired large airway disorders in children. For example, the faster scanning time and increased anatomical coverage that are afforded by MDCT are especially beneficial to children. MDCT also provides high-quality multiplanar 2-dimensional (2-D), internal and external volume-rendering 3-dimensional (3-D), and dynamic 4-dimensional (4-D) imaging. These advances have enabled CT to become the primary non-invasive imaging modality of choice for the diagnosis, treatment planning, and follow-up evaluation of various large airway disorders in infants and children. It is thus essential for radiologists to be familiar with safe and effective techniques for performing MDCT and to be able to recognize the characteristic imaging appearances of large airway disorders affecting children. (orig.)

  15. Airway Management During Upper GI Endoscopic Procedures: State of the Art Review.

    Science.gov (United States)

    Goudra, Basavana; Singh, Preet Mohinder

    2017-01-01

    With the growing popularity of propofol mediated deep sedation for upper gastrointestinal (GI) endoscopic procedures, challenges are being felt and appreciated. Research suggests that management of the airway is anything but routine in this setting. Although many studies and meta-analyses have demonstrated the safety of propofol sedation administered by registered nurses under the supervision of gastroenterologists (likely related to the lighter degrees of sedation than those provided by anesthesia providers and is under medicolegal controversy in the United States), there is no agreement on the optimum airway management for procedures such as endoscopic retrograde cholangiopancreatography. Failure to rescue an airway at an appropriate time has led to disastrous consequences. Inability to evaluate and appreciate the risk factors for aspiration can ruin the day for both the patient and the health care providers. This review apprises the reader of various aspects of airway management relevant to the practice of sedation during upper GI endoscopy. New devices and modification of existing devices are discussed in detail. Recognizing the fact that appropriate monitoring is important for timely recognition and management of potential airway disasters, these issues are explored thoroughly.

  16. Randomised comparison of the effectiveness of the laryngeal mask airway supreme, i-gel and current practice in the initial airway management of prehospital cardiac arrest (REVIVE-Airways): a feasibility study research protocol.

    Science.gov (United States)

    Benger, Jonathan Richard; Voss, Sarah; Coates, David; Greenwood, Rosemary; Nolan, Jerry; Rawstorne, Steven; Rhys, Megan; Thomas, Matthew

    2013-01-01

    Effective cardiopulmonary resuscitation with appropriate airway management improves outcomes following out-of-hospital cardiac arrest (OHCA). Historically, tracheal intubation has been accepted as the optimal form of OHCA airway management in the UK. The Joint Royal Colleges Ambulance Liaison Committee recently concluded that newer supraglottic airway devices (SADs) are safe and effective devices for hospital procedures and that their use in OHCA should be investigated. This study will address an identified gap in current knowledge by assessing whether it is feasible to use a cluster randomised design to compare SADs with current practice, and also to each other, during OHCA. The primary objective of this study is to assess the feasibility of a cluster randomised trial to compare the ventilation success of two newer SADs: the i-gel and the laryngeal mask airway supreme to usual practice during the initial airway management of OHCA. The secondary objectives are to collect data on ventilation success, further airway interventions required, loss of a previously established airway during transport, airway management on arrival at hospital (or termination of the resuscitation attempt), initial resuscitation success, survival to intensive care admission, survival to hospital discharge and patient outcome at 3 months. Ambulance paramedics will be randomly allocated to one of the three methods of airway management. Adults in medical OHCA attended by a trial paramedic will be eligible for the study. Approval for the study has been obtained from a National Health Service Research Ethics Committee with authority to review proposals for trials of a medical device in incapacitated adults. The results will be made publicly available on an open access website, and we will publish the findings in appropriate journals and present them at national and international conferences relevant to the subject field. ISRCTN: 18528625.

  17. Managing dysphonia in paediatric patients with complex airway conditions.

    Science.gov (United States)

    Ojha, S; Setlur, J; Bunting, G; Hartnick, C J

    2015-08-01

    To suggest a phonosurgical management strategy that can be used for children who have previously undergone laryngotracheal reconstruction. This cases series describes three children who presented with complex, multi-level airway stenosis and marked dysphonia. Phonosurgical intervention involved endoscopic and open approaches, and was combined with voice therapy. A phonosurgical reconstruction management algorithm is suggested for evaluating and treating these complex conditions. Pre-operative assessment is critical, and should involve voice analysis and glottal anatomy assessment using office laryngoscopy and stroboscopy. The risks must be weighed up against the benefit of vocal improvement. Surgical intervention should involve combined endoscopic and open approaches. Voice restoration after paediatric airway reconstruction is a complex challenge. Surgical intervention should be conducted in a step-by-step manner to reduce the risk of worsening dysphonia and airway compromise. The risks and benefits must be carefully explored and discussed.

  18. Airway management of a rare huge-size supraglottic mass

    International Nuclear Information System (INIS)

    Abou-Zeid, Haitham A.; Al-Ghamdi, Abdel Mohsin A.; Al-Qurain, Abdel-Aziz A.; Mokhazy, Khalid M.

    2006-01-01

    Laser excision of a huge-sized supraglottic mass nearly obstructing the airway passage is a real challenge to anesthesiologists. Upper airway obstruction due to neoplasm in supraglottic region, is traditionally managed by preoperative tracheostomy, however, such a common procedure can potentially have an impact on long-term outcome. A 26-year-old patient presented with dysphagia caused by left cystic vallecular synovial sarcoma. The airway was successfully secured via fiberoptic bronchoscopy, followed by excision of the supraglottic tumor with CO2 laser surgery. Tracheostomy was not required. The patient was discharged from the hospital on the 4th day of surgery. This case, highlights the possibility to secure the airway passage without performing preoperative tracheostomy resulting in good outcome and short hospital stay. (author)

  19. Simulation Based Training Improves Airway Management for Helicopter EMS Teams

    Science.gov (United States)

    Dhindsa, Harinder S.; Reid, Renee; Murray, David; Lovelady, James; Powell, Katie; Sayles, Jeff; Stevenson, Christopher; Baker, Kathy; Solada, Brian; Carroll, Scott; hide

    2011-01-01

    The use of paralytic medications in the performance of RSI intubation is a high risk intervention used by many HEMS crews. There is no margin for error in RSI intubation as the results can be fatal. Operating room access for airway management training has become more difficult, and is not representative of the environment in which HEMS crews typically function. LifeEvac of Virginia designed and implemented an SST airway management program to provide a realistic, consistent training platform. The dynamic program incorporates standardized scenarios, and real life challenging cases that this and other programs have encountered. SST is done in a variety of settings including the helicopter, back of ambulances, staged car crashes and simulation centers. The result has been the indoctrination of a well defined, consistent approach to every airway management intervention. The SST program facillitates enhancement of technical skills. as well as team dynamics and communication.

  20. Anesthetic considerations and difficult airway management in a case of Noonan syndrome

    Directory of Open Access Journals (Sweden)

    Sukhminder Jit Singh Bajwa

    2011-01-01

    Full Text Available Noonan syndrome is a genetically transmitted autosomal dominant disorder characterized by various anatomic anomalies and pathophysiologic derangements. Anesthetic management in such cases poses a multitude of challenges, especially related to the airway management and maintenance of cardiovascular stability. We report a case of a 9-year-old male child weighing 24 kg, who was diagnosed as a case of Noonan syndrome and had undergone ligation of patent ductus arteriosus during early childhood. The child was operated on for release of bilateral neck bands under general anesthesia. The case report pertains to the successful airway and anesthetic management in the background of difficult airway and existence of various cardiac lesions.

  1. Covered Bronchial Stent Insertion to Manage Airway Obstruction with Hemoptysis Caused by Lung Cancer

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Sae Ah; Kim, Do Hyeong [Dankook University College of Medicine, Dankook University Hospital, Cheonan (Korea, Republic of); Jen, Gyeong Sik [Bundang CHA General Hospital, CHA University, Seongnam (Korea, Republic of)

    2012-07-15

    Malignant airway obstruction and hemoptysis are common in lung cancer patients. Recently, airway stent is commonly used to preserve airway in malignant airway obstruction. Hemoptysis can be managed through various methods including conservative treatment, endobronchial tamponade, bronchoscopic intervention, embolization and surgery. In our case studies, we sought to investigate the effectiveness of airway stents for re-opening the airway as well as tamponade effects in four patients with malignant airway obstruction and bleeding caused by tumors or lymph node invasions.

  2. A comparison between the v-gel supraglottic airway device and the cuffed endotracheal tube for airway management in spontaneously breathing cats during isoflurane anaesthesia

    NARCIS (Netherlands)

    van Oostrom, H.; Krauss, M.W.; Sap, R.

    2013-01-01

    Abstract OBJECTIVE: To compare airway management using the v-gel supraglottic airway device (v-gel SGAD) to that using an endotracheal tube (ETT), with respect to practicability, leakage of volatile anaesthetics and upper airway discomfort in cats. STUDY DESIGN: Prospective, randomized clinical

  3. Anaesthetic management in a case of large plunging ranula with difficult airway: A case report

    Directory of Open Access Journals (Sweden)

    Surendra Kumar Sethi

    2017-04-01

    Full Text Available Plunging ranula is a mucous retention cyst found on the floor of mouth which arises from the submandibular and sublingual salivary glands extending to lateral aspect of neck, which may often cause potential airway obstruction leading to difficulty in airway management. A forty year old female patient was admitted to our hospital with large, painless swelling in the floor of mouth extending to the lateral part of body of mandible and neck. This intraoral swelling distorted the normal airway anatomy thus making airway management difficult as the patient was planned for excision of swelling under general anaesthesia. So we present a case of successful management of a difficult airway by using awake fibre optic intubation in a patient posted for excision of a large plunging ranula under general anaesthesia.

  4. The effect of severe acute respiratory syndrome (SARS) on emergency airway management.

    Science.gov (United States)

    Wong, Evelyn; Ho, Khoy Kheng

    2006-07-01

    From early March 2003 to late May 2003, severe acute respiratory syndrome (SARS) was detected in Singapore. The increase in workload and new infection control procedures were thought to affect resuscitation and airway management. Our aim was to study the effects of wearing of personal protective equipment (PPE) and powered air-purifying respirator (PAPR) and the restriction in the number of resuscitation personnel on airway management during the SARS crisis. Data was collected prospectively through an ongoing emergency airway registry. The data was divided into three periods: (1) before PPE was instituted from 1 November 2002 to 31 March 2003; (2) during SARS (when PPE use was mandatory) from 1 April to 31 July 2003; (3) post-SARs (when PPE use was non-mandatory but encouraged) from 1 August to 31 March 2004. There was no change in patient demographics during the three periods. There were significant increases in the proportion of resuscitation cases and airway interventions during the SARS period compared to the pre-SARS period. The resident medical officer intubation rate decreased from 45.1% pre-SARS to 35.2% during SARS and 17.7% post-SARS. The complication rates were 10.5%, 9.9% and 9.4% in periods 1-3, respectively. Restriction in the number of healthcare staff attending to each patient may have influenced the department's decision to allow only the most confident or experienced personnel to manage the airway. The exposure of junior medical officers in emergency airway management during SARS and the immediate post-SARS period was decreased. This trend should be monitored further and intervention may be necessary should it continue to decline.

  5. Durability of Silicone Airway Stents in the Management of Benign Central Airway Obstruction.

    Science.gov (United States)

    Karush, Justin M; Seder, Christopher W; Raman, Anish; Chmielewski, Gary W; Liptay, Michael J; Warren, William H; Arndt, Andrew T

    2017-10-01

    The literature is devoid of a comprehensive analysis of silicone airway stenting for benign central airway obstruction (BCAO). With the largest series in the literature to date, we aim to demonstrate the safety profile, pattern of re-intervention, and duration of silicone airway stents. An institutional database was used to identify patients with BCAO who underwent rigid bronchoscopy with dilation and silicone stent placement between 2002 and 2015 at Rush University Medical Center. During the study period, 243 stents were utilized in 63 patients with BCAO. Pure tracheal stenosis was encountered in 71% (45/63), pure tracheomalacia in 11% (7/63), and a hybrid of both in 17% (11/63). Median freedom from re-intervention was 104 (IQR 167) days. Most common indications for re-intervention include mucus accumulation (60%; 131/220), migration (28%; 62/220), and intubation (8%; 18/220). The most common diameters of stent placed were 12 mm (94/220) and 14 mm (96/220). The most common lengths utilized were 30 mm (60/220) and 40 mm (77/220). Duration was not effected by stent size when placed for discrete stenosis. However, 14 mm stents outperformed 12 mm when tracheomalacia was present (157 vs. 37 days; p = 0.005). Patients with a hybrid stenosis fared better when longer stents were used (60 mm stents outlasted 40 mm stents 173 vs. 56 days; p = 0.05). Rigid bronchoscopy with silicone airway stenting is a safe and effective option for the management of benign central airway obstruction. Our results highlight several strategies to improve stent duration.

  6. Management of upper airway edema caused by hereditary angioedema

    Directory of Open Access Journals (Sweden)

    Farkas Henriette

    2010-07-01

    Full Text Available Abstract Hereditary angioedema is a rare disorder with a genetic background involving mutations in the genes encoding C1-INH and of factor XII. Its etiology is unknown in a proportion of cases. Recurrent edema formation may involve the subcutis and the submucosa - the latter can produce obstruction in the upper airways and thereby lead to life-threatening asphyxia. This is the reason for the high, 30-to 50-per-cent mortality of undiagnosed or improperly managed cases. Airway obstruction can be prevented through early diagnosis, meaningful patient information, timely recognition of initial symptoms, state-of-the-art emergency therapy, and close monitoring of the patient. Prophylaxis can substantially mitigate the risk of upper airway edema and also improve the patients' quality of life. Notwithstanding the foregoing, any form of upper airway edema should be regarded as a potentially life-threatening condition. None of the currently available prophylactic modalities is capable of preventing UAE with absolute certainty.

  7. Dilemmas, Confusion, and Misconceptions Related to Small Airways Directed Therapy

    DEFF Research Database (Denmark)

    Lavorini, Federico; Pedersen, Søren; Usmani, Omar S.

    2017-01-01

    During the past decade, there has been increasing evidence that the small airways (ie, airways < 2 mm in internal diameter) contribute substantially to the pathophysiologic and clinical expression of asthma and COPD. The increased interest in small airways is, at least in part, a result of innova......During the past decade, there has been increasing evidence that the small airways (ie, airways COPD. The increased interest in small airways is, at least in part, a result...... of innovation in small-particle aerosol formulations that better target the distal lung and also advanced physiologic methods of assessing small airway responses. Increasing the precision of drug deposition may improve targeting of specific diseases or receptor locations, decrease airway drug exposure...... benefit, compared with large-particle aerosol treatment. However, a number of questions remain unanswered about the pragmatic approach relevant for clinicians to consider the role of small airways directed therapy in the day-to-day management of asthma and COPD. We thus have tried to clarify the dilemmas...

  8. Airway management in patients with maxillofacial trauma - A retrospective study of 177 cases

    Directory of Open Access Journals (Sweden)

    Chetan B Raval

    2011-01-01

    Full Text Available Background: Airway management in maxillofacial injuries presents with a unique set of problems. Compromised airway is still a challenge to the anesthesiologist in spite of all modalities available. Maxillofacial injuries are the result of high-velocity trauma arising from road traffic accidents, sport injuries, falls and gunshot wounds. Any flaw in airway management may lead to grave morbidity and mortality in prehospital or hospital settings and as well as for reconstruction of fractures subsequently. Methods: One hundred and seventy-seven patients of maxillofacial injuries, operated over a period of one and half years during July 2008 to December 2009 in Al-Nahdha hospital were reviewed. All patients were reviewed in depth with age related type of injury, etiology and techniques of difficult airway management. Results: The major etiology of injuries were road traffic accidents (67% followed by sport (15% and fall (15%. Majority of patients were young in the age group of 11-30 years (71 %. Fracture mandible (53% was the most common injury, followed by fracture maxilla (21%, fracture zygoma (19% and pan-facial fractures (6%. Maxillofacial injuries compromise mask ventilation and difficult airway due to facial fractures, tissue edema and deranged anatomy. Shared airway with the surgeon needs special attention due to restrictions imposed during surgery. Several methods available for securing the airway, both decision-making and performance, are important in such circumstances. Airway secured by nasal intubation with direct visualization of vocal cords was the most common (57%, followed by oral intubation (17%. Other methods like tracheostomy and blind nasal intubation was avoided by fiberoptic bronchoscopic nasal intubation in 26% of patients. Conclusion: The results of this study indicated that surgically securing the airway by tracheostomy should be revised compared to other available methods. In the era of rigid fixation of fractures and the

  9. Review article: Critical Care Airway Management eLearning modules.

    Science.gov (United States)

    Doshi, Deepak; McCarthy, Sally; Mowatt, Elizabeth; Cahill, Angela; Peirce, Bronwyn; Hawking, Geoff; Osborne, Ruth; Hibble, Belinda; Ebbs, Katharine

    2017-11-16

    The Australasian College for Emergency Medicine (ACEM) has recently launched the Critical Care Airway Management eLearning modules to support emergency medicine trainees in developing their airway management skills in the ED. A team of emergency physicians and trainees worked collaboratively to develop the eLearning resources ensuring extensive stakeholder consultation. A comprehensive resource manual was written to provide learners with knowledge that underpins the modules. ACEM provided project coordination as well as administrative and technical team support to the production. Although specifically developed with early ACEM trainees in mind, it is envisaged the resources will be useful for all emergency clinicians. The project was funded by the Australian Commonwealth Department of Health. © 2017 Australasian College for Emergency Medicine and Australasian Society for Emergency Medicine.

  10. Clinical Factors Associated with the Non-Operative Airway Management of Patients with Robin Sequence

    Directory of Open Access Journals (Sweden)

    Frank P. Albino

    2016-11-01

    Full Text Available BackgroundThe indications for surgical airway management in patients with Robin sequence (RS and severe airway obstruction have not been well defined. While certain patients with RS clearly require surgical airway intervention and other patients just as clearly can be managed with conservative measures alone, a significant proportion of patients with RS present with a more confusing and ambiguous clinical course. The purpose of this study was to describe the clinical features and objective findings of patients with RS whose airways were successfully managed without surgical intervention.MethodsThe authors retrospectively reviewed the medical charts of infants with RS evaluated for potential surgical airway management between 1994 and 2014. Patients who were successfully managed without surgical intervention were included. Patient demographics, nutritional and respiratory status, laboratory values, and polysomnography (PSG findings were recorded.ResultsThirty-two infants met the inclusion criteria. The average hospital stay was 16.8 days (range, 5–70 days. Oxygen desaturation (<70% by pulse oximetry occurred in the majority of patients and was managed with temporary oxygen supplementation by nasal cannula (59% or endotracheal intubation (31%. Seventy-five percent of patients required a temporary nasogastric tube for nutritional support, and a gastrostomy tube placed was placed in 9%. All patients continued to gain weight following the implementation of these conservative measures. PSG data (n=26 demonstrated mild to moderate obstruction, a mean apneahypopnea index (AHI of 19.2±5.3 events/hour, and an oxygen saturation level <90% during only 4% of the total sleep time.ConclusionsNonsurgical airway management was successful in patients who demonstrated consistent weight gain and mild to moderate obstruction on PSG, with a mean AHI of <20 events/hour.

  11. Respiratory Strategies and Airway Management in Patients with Pulmonary Alveolar Proteinosis: A Review

    Directory of Open Access Journals (Sweden)

    Tomas Vymazal

    2015-01-01

    Full Text Available Background. Pulmonary alveolar proteinosis is a rare disorder characterized by a large accumulation of lipoproteinaceous material within the alveoli. This causes respiratory failure due to a restriction of gas exchange and changes in the ventilation/perfusion ratio. Treatment methods include noninvasive pharmacological approaches and invasive procedures, such as whole-lung lavage under general anesthesia. Methods. Based on the literature search using free-term key words, we have analyzed published articles concerning the perioperative management of adult and pediatric patients with pulmonary alveolar proteinosis. Results and Discussion. In total, 184 publications were analyzed. Only a few manuscripts were related to anesthetic, respiratory, and airway management in patients suffering from pulmonary alveolar proteinosis. Airway should be strictly separated using a double-lumen tube. Respiratory strategies involve the use of manual clapping, continuous positive airway pressure, high-frequency jet ventilation of the affected lung, and employment of venovenous extracorporeal membrane oxygenation in the most serious of cases. Conclusion. The goal of this review is to summarize the current published information about an anesthetic management strategy with a focus on airway management, ventilation, and oxygenation techniques in PAP patients.

  12. Successful management of airway hemangioma with propranolol.

    Science.gov (United States)

    Mendiratta, Vibhu; Varghese, Bincy; Chander, Ram; Parakh, Ankit; Solanki, Ravi S

    2013-06-01

    Airway hemangiomas can be difficult to manage and cause anxiety in both the parents and the treating physician. Propranolol, a nonselective beta-blocker, has recently been used for treating proliferating infantile hemangiomas. We report successful management of a proliferating, large, mixed infantile hemangioma with subglottic extension in an Indian infant using oral propranolol in a dose of 2mg/kg/day without any side effects. Induction of early involution and freedom from the side effects of steroid therapy seem encouraging for using propranolol as a first line treatment modality in the management of troublesome hemangiomas. © 2013 The International Society of Dermatology.

  13. Obstetric airway management | Bishop | Southern African Journal of ...

    African Journals Online (AJOL)

    Obstetric airway management continues to provide a challenge to anaesthetists. The incidence of difficult and failed intubations has either remained static, or improved slightly, in specific settings in recent years. Established dogma is being challenged and practice continues to evolve and adapt to new evidence.

  14. A Continuous Quality Improvement Airway Program Results in Sustained Increases in Intubation Success.

    Science.gov (United States)

    Olvera, David J; Stuhlmiller, David F E; Wolfe, Allen; Swearingen, Charles F; Pennington, Troy; Davis, Daniel P

    2018-02-21

    Airway management is a critical skill for air medical providers, including the use of rapid sequence intubation (RSI) medications. Mediocre success rates and a high incidence of complications has challenged air medical providers to improve training and performance improvement efforts to improve clinical performance. The aim of this research was to describe the experience with a novel, integrated advanced airway management program across a large air medical company and explore the impact of the program on improvement in RSI success. The Helicopter Advanced Resuscitation Training (HeART) program was implemented across 160 bases in 2015. The HeART program includes a novel conceptual framework based on thorough understanding of physiology, critical thinking using a novel algorithm, difficult airway predictive tools, training in the optimal use of specific airway techniques and devices, and integrated performance improvement efforts to address opportunities for improvement. The C-MAC video/direct laryngoscope and high-fidelity human patient simulation laboratories were implemented during the study period. Chi-square test for trend was used to evaluate for improvements in airway management and RSI success (overall intubation success, first-attempt success, first-attempt success without desaturation) over the 25-month study period following HeART implementation. A total of 5,132 patients underwent RSI during the study period. Improvements in first-attempt intubation success (85% to 95%, p improving RSI intubation performance in a large air medical company.

  15. Risk assessment of pre-hospital trauma airway management by anaesthesiologists using the predictive Bayesian approach

    Directory of Open Access Journals (Sweden)

    Nakstad Anders R

    2010-04-01

    Full Text Available Abstract Introduction Endotracheal intubation (ETI has been considered an essential part of pre-hospital advanced life support. Pre-hospital ETI, however, is a complex intervention also for airway specialist like anaesthesiologists working as pre-hospital emergency physicians. We therefore wanted to investigate the quality of pre-hospital airway management by anaesthesiologists in severely traumatised patients and identify possible areas for improvement. Method We performed a risk assessment according to the predictive Bayesian approach, in a typical anaesthesiologist-manned Norwegian helicopter emergency medical service (HEMS. The main focus of the risk assessment was the event where a patient arrives in the emergency department without ETI despite a pre-hospital indication for it. Results In the risk assessment, we assigned a high probability (29% for the event assessed, that a patient arrives without ETI despite a pre-hospital indication. However, several uncertainty factors in the risk assessment were identified related to data quality, indications for use of ETI, patient outcome and need for special training of ETI providers. Conclusion Our risk assessment indicated a high probability for trauma patients with an indication for pre-hospital ETI not receiving it in the studied HEMS. The uncertainty factors identified in the assessment should be further investigated to better understand the problem assessed and consequences for the patients. Better quality of pre-hospital airway management data could contribute to a reduction of these uncertainties.

  16. [Inadequate management of a difficult airway. Case SENSAR of the trimester].

    Science.gov (United States)

    2015-01-01

    A clinical case reported to SENSAR is presented (www.sensar.org). A patient came to the operating room for surgery for parathyroidectomy. She had several predictors of difficult airway management, including a story of difficulties in previous intubations in other hospitals, as the patient reported. Therefore, after evaluation in preoperative consultation, fibreoptic bronchoscopy intubation was recommended. The day of surgery after induction of general anesthesia direct laryngoscopy was performed, without recognizing any glottic structure (Cormack-Lehane grade iv). Conventional laryngoscope was changed to a videolaryngoscope (Airtraq(®)) to try to improve the laryngoscopic view, but there were difficulties with handling and insertion of it, causing minor injuries to the lingual mucosa. Finally, tracheal intubation was achieved after several attempts. Analysis of the incident revealed the active error due to lack of experience of the professional who performed intubation maneuvers, favored by latent factors or contributors as were the complex pathology of the patient and the absence of protocols to difficult airway management in the hospital. Communication and analysis of this incident served to highlight the importance of the security protocols in Anesthesia, and as a result a working group that conducted the current algorithm approach to a difficult airway management was formed, established guidelines for further information patient and deals since clinical training and professional practice for the management of airway devices availables in the hospital. Copyright © 2014 Sociedad Española de Anestesiología, Reanimación y Terapéutica del Dolor. Publicado por Elsevier España, S.L.U. All rights reserved.

  17. Intra‑Operative Airway Management in Patients with Maxillofacial ...

    African Journals Online (AJOL)

    None of the patients had tracheostomy either before or during operative management. Conclusion: Laryngoscopic grading and not adequacy of mouth opening predicted difficult intubation in this group of patients in the immediate preoperative period. Despite the distortions in the anatomy of the upper airway that may result ...

  18. Application of process improvement principles to increase the frequency of complete airway management documentation.

    Science.gov (United States)

    McCarty, L Kelsey; Saddawi-Konefka, Daniel; Gargan, Lauren M; Driscoll, William D; Walsh, John L; Peterfreund, Robert A

    2014-12-01

    Process improvement in healthcare delivery settings can be difficult, even when there is consensus among clinicians about a clinical practice or desired outcome. Airway management is a medical intervention fundamental to the delivery of anesthesia care. Like other medical interventions, a detailed description of the management methods should be documented. Despite this expectation, airway documentation is often insufficient. The authors hypothesized that formal adoption of process improvement methods could be used to increase the rate of "complete" airway management documentation. The authors defined a set of criteria as a local practice standard of "complete" airway management documentation. The authors then employed selected process improvement methodologies over 13 months in three iterative and escalating phases to increase the percentage of records with complete documentation. The criteria were applied retrospectively to determine the baseline frequency of complete records, and prospectively to measure the impact of process improvements efforts over the three phases of implementation. Immediately before the initial intervention, a retrospective review of 23,011 general anesthesia cases over 6 months showed that 13.2% of patient records included complete documentation. At the conclusion of the 13-month improvement effort, documentation improved to a completion rate of 91.6% (Pprocess improvement methodologies can improve airway documentation and may be similarly effective in improving other areas of anesthesia clinical practice.

  19. Receptor for advanced glycation end products and its ligand high-mobility group box-1 mediate allergic airway sensitization and airway inflammation.

    Science.gov (United States)

    Ullah, Md Ashik; Loh, Zhixuan; Gan, Wan Jun; Zhang, Vivian; Yang, Huan; Li, Jian Hua; Yamamoto, Yasuhiko; Schmidt, Ann Marie; Armour, Carol L; Hughes, J Margaret; Phipps, Simon; Sukkar, Maria B

    2014-08-01

    The receptor for advanced glycation end products (RAGE) shares common ligands and signaling pathways with TLR4, a key mediator of house dust mite (Dermatophagoides pteronyssinus) (HDM) sensitization. We hypothesized that RAGE and its ligand high-mobility group box-1 (HMGB1) cooperate with TLR4 to mediate HDM sensitization. To determine the requirement for HMGB1 and RAGE, and their relationship with TLR4, in airway sensitization. TLR4(-/-), RAGE(-/-), and RAGE-TLR4(-/-) mice were intranasally exposed to HDM or cockroach (Blatella germanica) extracts, and features of allergic inflammation were measured during the sensitization or challenge phase. Anti-HMGB1 antibody and the IL-1 receptor antagonist Anakinra were used to inhibit HMGB1 and the IL-1 receptor, respectively. The magnitude of allergic airway inflammation in response to either HDM or cockroach sensitization and/or challenge was significantly reduced in the absence of RAGE but not further diminished in the absence of both RAGE and TLR4. HDM sensitization induced the release of HMGB1 from the airway epithelium in a biphasic manner, which corresponded to the sequential activation of TLR4 then RAGE. Release of HMGB1 in response to cockroach sensitization also was RAGE dependent. Significantly, HMGB1 release occurred downstream of TLR4-induced IL-1α, and upstream of IL-25 and IL-33 production. Adoptive transfer of HDM-pulsed RAGE(+/+)dendritic cells to RAGE(-/-) mice recapitulated the allergic responses after HDM challenge. Immunoneutralization of HMGB1 attenuated HDM-induced allergic airway inflammation. The HMGB1-RAGE axis mediates allergic airway sensitization and airway inflammation. Activation of this axis in response to different allergens acts to amplify the allergic inflammatory response, which exposes it as an attractive target for therapeutic intervention. Copyright © 2014 American Academy of Allergy, Asthma & Immunology. Published by Mosby, Inc. All rights reserved.

  20. Efficacy of video-guided laryngoscope in airway management skills of medical students.

    Science.gov (United States)

    Peirovifar, Ali; Mahmoodpoor, Ata; Golzari, Samad Ej; Soleimanpour, Hassan; Eslampour, Yashar; Fattahi, Vahid

    2014-10-01

    Video-guided laryngoscopy, though unproven in achieving better success rates of laryngoscopy outcome and intubation, seems to provide better glottic visualization compared with direct laryngoscopy. The objective of this study was to compare the efficacy of video-guided laryngoscope (VGL) in the airway management skills of medical students. Medical students throughout their anesthesiology rotations were enrolled in this study. All students received standard training in the airway management during their course and were randomly allocated into two 20 person groups. In Group D, airway management was performed by direct laryngoscopy via Macintosh blade and in Group G intubation was performed via VGL. Time to intubation, number of laryngoscopy attempts and success rate were noted. Successful intubation was considered as the primary outcome. All data were analyzed using SPSS 16 software. Chi-square and Fisher's exact test were used for analysis of categorical variables. For analyzing continuous variables independent t-test was used. P Time to intubation was significantly less in Group G as compared to Group D (P: 0.02). Successful intubation in Group G was less frequently when compared to Group D (P: 0.66). Need for attending intervention, esophageal intubation and hypoxemic events during laryngoscopy were less in Group G; this, however, was statistically insignificant. The use of video-guided laryngoscopy improved the first attempt success rate, time to intubation, laryngoscopy attempts and airway management ability of medical students compared to direct laryngoscopy.

  1. Awake insertion of a Laryngeal Mask Airway-Proseal™ as alternative to awake fiberoptic intubation in management of anticipated difficult airway in ambulatory surgery

    Directory of Open Access Journals (Sweden)

    Matilde Zaballos

    Full Text Available Abstract Background and objectives The decision whether to manage an ambulatory patient with a previously documented difficult airway with a supraglottic device remain controversial. We report an awake insertion of a Laryngeal Mask Airway Proseal™ in a patient with known difficult airway scheduled for ambulatory surgery. Case report A 46-yr-old woman was programmed as a day case surgery for breast nodule resection. Her anesthetic record included an impossible intubation with cancelation of surgery and subsequent awake fibroscopic intubation. She reported emotional distress with the previous experience and declined this approach. In view of the previous experience, an awake airway control with a Laryngeal Mask Airway Proseal™ was planned after explaining and reassuring the patient. After adequate topicalisation, a size 4 Laryngeal Mask Airway Proseal™ was successfully inserted after two attempts, and their patency was confirmed by capnography. Anesthesia was induced intravenously and the surgery was uneventful. Conclusion We describe a feasible alternative strategy to awake intubation in a patient with known difficult airway undergoing ambulatory surgery. In this specific clinical situation, if tracheal intubation is deemed unnecessary, awake supraglottic airway might allow adequate ventilation and their use should be considered.

  2. New Approaches to Airway Management in Tracheal Resections-A Systematic Review and Meta-analysis.

    Science.gov (United States)

    Schieren, Mark; Böhmer, Andreas; Dusse, Fabian; Koryllos, Aris; Wappler, Frank; Defosse, Jerome

    2017-08-01

    Although endotracheal intubation, surgical crossfield intubation, and jet ventilation are standard techniques for airway management in tracheal resections, there are also reports of new approaches, ranging from regional anesthesia to extracorporeal support. The objective was to outline the entire spectrum of new airway techniques. The literature databases PubMed/Medline and the Cochrane Library were searched systematically for prospective and retrospective trials as well as case reports on tracheal resections. No restrictions applied to hospital types or settings. Adult patients undergoing surgical resections of noncongenital tracheal stenoses with end-to-end anastomoses. Airway management techniques were divided into conventional and new approaches and analyzed regarding their potential risks and benefits. A total of 59 publications (n = 797 patients) were included. The majority of publications (71.2%) describe conventional airway techniques. Endotracheal tube placement after induction of general anesthesia and surgical crossfield intubation after incision of the trachea were used most frequently without major complications. A total of 7 new approaches were identified, including 4 different regional anesthetic techniques (25 cases), supraglottic airways (4 cases), and new forms of extracorporeal support (25 cases). Overall failure rates of new techniques were low (1.8%). Details on patient selection and procedural specifics are provided. New approaches have several theoretical benefits, yet further research is required to establish criteria for patient selection and evaluate procedural safety. Given the low level of evidence, it currently is impossible to compare methods of airway management regarding outcome-related risks and benefits. Copyright © 2017 Elsevier Inc. All rights reserved.

  3. Review article: video-laryngoscopy: another tool for difficult intubation or a new paradigm in airway management?

    Science.gov (United States)

    Paolini, Jean-Baptiste; Donati, François; Drolet, Pierre

    2013-02-01

    An adequate airway management plan is essential for patient safety. Recently, new tools have been developed as alternatives to direct laryngoscopy and intubation. Among these, video-laryngoscopy has enjoyed a rapid increase in popularity and is now considered by many as the first-line technique in airway management. This paradigm shift may have an impact on patient safety. Studies show that video-laryngoscopes are associated with better glottic visualization, a higher success rate for difficult airways, and a faster learning curve, resulting in a higher success rate for intubations by novice physicians. Thus, unanticipated difficult intubations may be less frequent if video-laryngoscopy is used as the first-line approach. In addition, on-screen viewing by the operator creates a new dynamic interaction during airway management. The entire operating room team can assess progress in real time, which enhances communication and improves teaching. However, if video-laryngoscopes become standard tools for tracheal intubation, these more costly devices will need to be widely available in all locations where airway management is conducted. Furthermore, algorithms for difficult intubation will require modification, and the question of selecting alternate devices will arise. If the incidence of difficult intubation decreases, the lack of motivation to teach and learn the use of alternative devices might adversely impact patient safety. The greater effectiveness of video-laryngoscopes associated with multi-person visualization could enhance overall patient safety during airway management. However, the routine use of video-laryngoscopy also introduces some issues that need to be addressed to avoid potentially dangerous pitfalls.

  4. [Electrocautery and bronchoscopy as a first step for the management of central airway obstruction and associated hemoptysis].

    Science.gov (United States)

    Jalilie, Alfredo; Carvajal, Juan Carlos; Aparicio, Rodrigo; Meneses, Manuel

    2016-11-01

    Central airway obstruction caused by malignant or benign lesions, associated in some cases with hemoptysis, is a condition with high morbidity and mortality. The use of electrocautery by flexible bronchoscopy is an initial treatment option with immediate improvement of obstruction symptoms. It is as effective as Nd: YAG laser. To describe the usefulness of electrocautery in the management of central obstruction of the airway and hemoptysis. A retrospective, descriptive study of patients referred for management of central airway obstruction or associated hemoptysis. Diagnoses, symptoms (dyspnea, cough, and hemoptysis) and radiology before and after the procedures were analyzed. Eighteen patients aged 59 ± 12 years (66% males) were evaluated, registering 25 endoscopic procedures. Three conditions were found: partial or complete airway obstruction, hemoptysis and post lung transplant bronchial stenosis. Seventy two percent presented with dyspnea, 61% with cough and 33% with hemoptysis. Sixty six percent of patients had airway obstruction caused by malignant metastatic lesions. After electrocautery, 17 patients (94.4%) improved their symptoms and achieved complete airway clearing. Three patients had significant bronchial stenosis after lung transplant achieving subsequent clearing after electrocautery. Electrocautery during flexible bronchoscopy is an effective and safe procedure for the management of central airway obstruction and associated hemoptysis.

  5. Obstetric Anaesthetists' Association and Difficult Airway Society guidelines for the management of difficult and failed tracheal intubation in obstetrics.

    Science.gov (United States)

    Mushambi, M C; Kinsella, S M; Popat, M; Swales, H; Ramaswamy, K K; Winton, A L; Quinn, A C

    2015-11-01

    The Obstetric Anaesthetists' Association and Difficult Airway Society have developed the first national obstetric guidelines for the safe management of difficult and failed tracheal intubation during general anaesthesia. They comprise four algorithms and two tables. A master algorithm provides an overview. Algorithm 1 gives a framework on how to optimise a safe general anaesthetic technique in the obstetric patient, and emphasises: planning and multidisciplinary communication; how to prevent the rapid oxygen desaturation seen in pregnant women by advocating nasal oxygenation and mask ventilation immediately after induction; limiting intubation attempts to two; and consideration of early release of cricoid pressure if difficulties are encountered. Algorithm 2 summarises the management after declaring failed tracheal intubation with clear decision points, and encourages early insertion of a (preferably second-generation) supraglottic airway device if appropriate. Algorithm 3 covers the management of the 'can't intubate, can't oxygenate' situation and emergency front-of-neck airway access, including the necessity for timely perimortem caesarean section if maternal oxygenation cannot be achieved. Table 1 gives a structure for assessing the individual factors relevant in the decision to awaken or proceed should intubation fail, which include: urgency related to maternal or fetal factors; seniority of the anaesthetist; obesity of the patient; surgical complexity; aspiration risk; potential difficulty with provision of alternative anaesthesia; and post-induction airway device and airway patency. This decision should be considered by the team in advance of performing a general anaesthetic to make a provisional plan should failed intubation occur. The table is also intended to be used as a teaching tool to facilitate discussion and learning regarding the complex nature of decision-making when faced with a failed intubation. Table 2 gives practical considerations of how to

  6. [Successful airway management using i-gel in 7 patients undergoing awake craniotomy].

    Science.gov (United States)

    Matsunami, Katsuaki; Sanuki, Michiyoshi; Yasuuji, Masakazu; Nakanuno, Ryuichi; Kato, Takahiro; Kawamoto, Masashi

    2014-07-01

    In order to secure airway during awake craniotomy, we used i-gel to perform positive-pressure ventilation in 7 patients for their anesthetic management. During removal of a tumor around the motor speech center, anesthetic management including asleep-awake-asleep technique was applied for speech testing. The technique, insertion and re-insertion of i-gel, was needed and it was easy in all the patients. During positive-pressure ventilation, peak pressure, tidal volume both for inspiration and expiration, and endtidal-CO2 were not markedly altered. Leakage around i-gel, and its differences between inspiration and expiration were negligible, while the tidal volume was adequate. We conclude that i-gel is useful for anesthetic management for awake craniotomy procedure for both securing airway and ventilation.

  7. In-hospital airway management training for non-anesthesiologist EMS physicians: a descriptive quality control study.

    Science.gov (United States)

    Trimmel, Helmut; Beywinkler, Christoph; Hornung, Sonja; Kreutziger, Janett; Voelckel, Wolfgang G

    2017-04-26

    Pre-hospital airway management is a major challenge for emergency medical service (EMS) personnel. Despite convincing evidence that the rescuer's qualifications determine efficacy of tracheal intubation, in-hospital airway management training is not mandatory in Austria, and often neglected. Thus we sought to prove that airway management competence of EMS physicians can be established and maintained by a tailored training program. In this descriptive quality control study we retrospectively evaluated all in- and pre-hospital airway cases managed by EMS physicians who underwent a structured in-hospital training program in anesthesia at General Hospital Wiener Neustadt. Data was obtained from electronic anesthesia and EMS documentation systems. From 2006 to 2016, 32 EMS physicians with 3-year post-graduate education, but without any prior experience in anesthesia were trained. Airway management proficiency was imparted in three steps: initial training, followed by an ongoing practice schedule in the operating room (OR). Median and interquartile range of number of in-hospital tracheal intubations (TIs) vs. use of supra-glottic airway devices (SGA) were 33.5 (27.5-42.5) vs. 19.0 (15.0-27.0) during initial training; 62.0 (41.8-86.5) vs. 33.5 (18.0-54.5) during the first, and 64.0 (34.5-93.8) vs. 27 (12.5-56.0) during the second year. Pre-hospitaly, every physician performed 9.0 (5.0-14.8) TIs vs. 0.0 (0.0-0.0) SGA cases during the first, and 9.0 (7.0-13.8) TIs vs. 0.0 (0.0-0.3) SGA during the second year. Use of an SGA was mandatory when TI failed after the second attempt, thus accounting for a total of 33 cases. In 8 cases, both TI and SGA failed, but bag mask ventilation was successfully performed. No critical events related to airway management were noted and overall success rate for TI with a max of 2 attempts was 95.3%. Number of TIs per EMS physician is low in the pre-hospital setting. A training concept that assures an additional 60+ TIs per year appears to

  8. [Difficult Ventilation Requiring Emergency Endotracheal Intubation during Awake Craniotomy Managed by Laryngeal Mask Airway].

    Science.gov (United States)

    Matsuda, Asako; Mizota, Toshiyuki; Tanaka, Tomoharu; Segawa, Hajime; Fukuda, Kazuhiko

    2016-04-01

    We report a case of difficult ventilation requiring emergency endotracheal intubation during awake craniotomy managed by laryngeal mask airway (LMA). A 45-year-old woman was scheduled to receive awake craniotomy for brain tumor in the frontal lobe. After anesthetic induction, airway was secured using ProSeal LMA and patient was mechanically ventilated in pressure-control mode. Patient's head was fixed with head-pins at anteflex position, and the operation started. About one hour after the start of the operation, tidal volume suddenly decreased. We immediately started manual ventilation, but the airway resistance was extremely high and we could not adequately ventilate the patient. We administered muscle relaxant for suspected laryngospasm, but ventilatory status did not improve; so we decided to conduct emergency endotracheal intubation. We tried to intubate using Airwayscope or LMA-Fastrach, but they were not effective in our case. Finally trachea was intubated using transnasal fiberoptic bronchoscopy. We discuss airway management during awake craniotomy, focusing on emergency endotracheal intubation during surgery.

  9. Infrared Red Intubation System (IRRIS) guided flexile videoscope assisted difficult airway management

    DEFF Research Database (Denmark)

    Kristensen, M S; Fried, E; Biro, P

    2018-01-01

    BACKGROUND: Tracheal intubation with a flexible scope is a cornerstone technique in patients with severely difficult airways, but may fail. We report on a technique, Infrared Red Intubation System (IRRIS), that seems to facilitate the identification of the glottis. METHODS: The IRRIS is placed over...... the patient's cricothyroid membrane and emits blinking infrared light through the patient's skin into the subglottic space. When a flexible videoscope (one that does not filter infrared light) is introduced into the airway, it will display this as a blinking white light emerging from the glottis, retrograde...... transillumination, showing the pathway to the trachea. We have introduced this as an adjunct when managing our patients with difficult airways. We describe the technique and retrospectively report on the first ten patients where it was used. RESULTS: All ten patients had significant pathology in the airway...

  10. Implementing blended learning in emergency airway management training: a randomized controlled trial.

    Science.gov (United States)

    Kho, Madeleine Huei Tze; Chew, Keng Sheng; Azhar, Muhaimin Noor; Hamzah, Mohd Lotfi; Chuah, Kee Man; Bustam, Aida; Chan, Hiang Chuan

    2018-01-15

    While emergency airway management training is conventionally conducted via face-to-face learning (F2FL) workshops, there are inherent cost, time, place and manpower limitations in running such workshops. Blended learning (BL) refers to the systematic integration of online and face-to-face learning aimed to facilitate complex thinking skills and flexible participation at a reduced financial, time and manpower cost. This study was conducted to evaluate its effectiveness in emergency airway management training. A single-center prospective randomised controlled trial involving 30 doctors from Sarawak General Hospital, Malaysia was conducted from September 2016 to February 2017 to compare the effectiveness of BL versus F2FL for emergency airway management training. Participants in the BL arm were given a period of 12 days to go through the online materials in a learning management system while those in the F2FL arm attended a-day of face-to-face lectures (8 h). Participants from both arms then attended a day of hands-on session consisting of simulation skills training with airway manikins. Pre- and post-tests in knowledge and practical skills were administered. E-learning experience and the perception towards BL among participants in the BL arm were also assessed. Significant improvements in post-test scores as compared to pre-test scores were noted for participants in both BL and F2FL arms for knowledge, practical, and total scores. The degree of increment between the BL group and the F2FL arms for all categories were not significantly different (total scores: 35 marks, inter-quartile range (IQR) 15.0 - 41.0 vs. 31 marks, IQR 24.0 - 41.0, p = 0.690; theory scores: 18 marks, IQR 9 - 24 vs. 19 marks, IQR 15 - 20, p = 0.992; practical scores: 11 marks, IQR 5 -18 vs. 10 marks, IQR 9 - 20, p = 0.461 respectively). The overall perception towards BL was positive. Blended learning is as effective as face-to-face learning for emergency airway management training

  11. Low tracheal tumor and airway management: An anesthetic challenge

    Directory of Open Access Journals (Sweden)

    Richa Saroa

    2015-01-01

    Full Text Available We describe a case presenting with tracheal tumor wherein a Microlaryngeal tube was advanced into the trachea distal to the tumor for primary airway control followed by cannulation of both endobronchial lumen with 5.5 mm endotracheal tubes to provide independent lung ventilation post tracheal transection using Y- connector attached to anesthesia machine. The plan was formulated to provide maximal surgical access to the trachea while providing adequate ventilation at the same time. A 32 yrs non smoker male, complaining of cough, progressive dyspnea and hemoptysis was diagnosed to have a broad based mass in the trachea on computed tomography of chest. Bronchoscopy of the upper airway confirmed presence of the mass at a distance of 9 cms from the vocal cords, obstructing the tracheal lumen by three fourth of the diameter. The patient was scheduled to undergo the resection of the mass through anterolateral thoracotomy. We recommend the use of extralong, soft, small sized microlaryngeal surgery tube in tumors proximal to carina, for securing the airway before the transection of trachea and bilateral endobronchial intubation with small sized cuffed endotracheal tubes for maintenance of ventilation after the transection of trachea in patients with mass in the lower trachea.

  12. Airway stents

    Science.gov (United States)

    Keyes, Colleen

    2018-01-01

    Stents and tubes to maintain the patency of the airways are commonly used for malignant obstruction and are occasionally employed in benign disease. Malignant airway obstruction usually results from direct involvement of bronchogenic carcinoma, or by extension of carcinomas occurring in the esophagus or the thyroid. External compression from lymph nodes or metastatic disease from other organs can also cause central airway obstruction. Most malignant airway lesions are surgically inoperable due to advanced disease stage and require multimodality palliation, including stent placement. As with any other medical device, stents have significantly evolved over the last 50 years and deserve an in-depth understanding of their true capabilities and complications. Not every silicone stent is created equal and the same holds for metallic stents. Herein, we present an overview of the topic as well as some of the more practical and controversial issues surrounding airway stents. We also try to dispel the myths surrounding stent removal and their supposed use only in central airways. At the end, we come to the long-held conclusion that stents should not be used as first line treatment of choice, but after ruling out the possibility of curative surgical resection or repair. PMID:29707506

  13. Management of Upper Airway Resistance Syndrome: A Systematic Literature Review

    Directory of Open Access Journals (Sweden)

    Ranjan Mathur

    2015-01-01

    Full Text Available Background : This disorder, also known by terms such as obstructive sleep apnea (OSA, upper airway sleep disorder and snoring. Snoring has also been identified as a possible risk factor for hyper tension, ischemic heart disease and stroke. The role of dentistry in sleep disorders is becoming more significant, especially in co- managing patients with simple snoring and mild to moderate OSA. The practicing dental professional has the opportunity to assist patients at a variety of levels, starting with the recognition of a sleep -related disorder, referring patients to a physician for evaluation and assisting in the management of sleep disorders. The first and simplest option would be behaviour modification, followed by insertion of oral devices suited to the patient, especially in those with mild to moderate OSA. Continuous positive airway pressure (CPAP and surgic al options are chosen for patients with moderate to severe OSA.

  14. Incidence of unanticipated difficult airway using an objective airway score versus a standard clinical airway assessment

    DEFF Research Database (Denmark)

    Nørskov, Anders Kehlet; Rosenstock, Charlotte Valentin; Wetterslev, Jørn

    2013-01-01

    -specific assessment. Data from patients' pre-operative airway assessment are registered in the Danish Anaesthesia Database. Objective scores for intubation and mask ventilation grade the severity of airway managements. The accuracy of predicting difficult intubation and mask ventilation is measured for each group...... the examination and registration of predictors for difficult mask ventilation with a non-specified clinical airway assessment on prediction of difficult mask ventilation.Method/Design: We cluster-randomized 28 Danish departments of anaesthesia to airway assessment either by the SARI or by usual non...... that registration of the SARI and predictors for difficult mask ventilation are mandatory for the intervention group but invisible to controls....

  15. Advancing the management of Obstructive Airways Diseases through Translational Research

    DEFF Research Database (Denmark)

    Porsbjerg, Celeste; Sverrild, Asger; Baines, Katherine J

    2018-01-01

    Obstructive airways diseases (OAD) represent a huge burden of illness worldwide, and in spite of the development of effective therapies, significant morbidity and mortality related to asthma and COPD still remains. Over the past decade, our understanding of OAD has improved vastly, and novel...... treatments have evolved. This evolution is the result of successful translational research, which has connected clinical presentations of OAD and underlying disease mechanisms, thereby enabling the development of targeted treatments. The next challenge of translational research will be to position...... these novel treatments for OAD for optimal clinical use. At the same time, there is great potential in these treatments providing even better insights into disease mechanisms in OAD, by studying the effects of blocking individual immunological pathways. To optimise this potential, there is a need to ensure...

  16. The Laryngeal Mask Airway (LMA) as an alternative to airway ...

    African Journals Online (AJOL)

    Background: To evaluate the possibility of airway management using a laryngeal mask airway (LMA) during dental procedures on mentally retarded (MR) patients and patients with genetic diseases. Design: A prospective pilot study. Setting: University Hospital. Methods: A pilot study was designed to induce general ...

  17. A New Design for Airway Management Training with Mixed Reality and High Fidelity Modeling.

    Science.gov (United States)

    Shen, Yunhe; Hananel, David; Zhao, Zichen; Burke, Daniel; Ballas, Crist; Norfleet, Jack; Reihsen, Troy; Sweet, Robert

    2016-01-01

    Restoring airway function is a vital task in many medical scenarios. Although various simulation tools have been available for learning such skills, recent research indicated that fidelity in simulating airway management deserves further improvements. In this study, we designed and implemented a new prototype for practicing relevant tasks including laryngoscopy, intubation and cricothyrotomy. A large amount of anatomical details or landmarks were meticulously selected and reconstructed from medical scans, and 3D-printed or molded to the airway intervention model. This training model was augmented by virtually and physically presented interactive modules, which are interoperable with motion tracking and sensor data feedback. Implementation results showed that this design is a feasible approach to develop higher fidelity airway models that can be integrated with mixed reality interfaces.

  18. A comprehensive scoring system in correlation with perioperative airway management for neonatal Pierre Robin Sequence.

    Directory of Open Access Journals (Sweden)

    Ning Yin

    Full Text Available To evaluate a comprehensive scoring system which combines clinical manifestations of Pierre Robin Sequence (PRS including severity of breathing difficulties, body weight and preoperative Cormack-Lehane grade, for its correlation with perioperative PRS airway management decision.Forty PRS children were retrospectively recruited after surgery. Specialists examined all subjects and scored for clinical manifestations (1´ - 4´, weight gain (1´- 4´, dyspnea scores (1´- 4´, and Cormack-Lehane grade (1´- 4´. The correlation of the integrated scores and the necessity of endotracheal intubation or laryngeal mask application were analyzed. In addition, the score correlation with postoperative dyspnea and/or low pulse oxygen saturation (SPO2 levels after extubation was determined.In our study every individual patient had a score from 0´ to 16´, while the higher in the numbers represented higher risk of breathing difficulty. All patients with comprehensive scores 13 points required a laryngeal mask assisted airway management and were considered to have difficult airways. Dyspnea after extubation and postoperative low SPO2 occurred among patients who scored over 10 points.In PRS patients, preoperative weight gaining status and severity of dyspnea in combination with Cormack-Lehane classification provide a scoring system that could help to optimize airway management decisions such as endotracheal intubation or laryngeal mask airway placement and has the potential to predict postoperative dyspnea or low SPO2 levels.

  19. Remifentanil dose for laryngeal mask airway insertion with a single standard dose of propofol during emergency airway management in elderly patients.

    Science.gov (United States)

    Ryu, Junghee; Oh, Ah Young; Baek, Ji-Seok; Kim, Jin-Hee; Park, Sang-Heon; Noh, Jae-Mun

    2014-04-01

    This study determined the dose of remifentanil to use during insertion of a Classic™ laryngeal mask airway (LMA, The Laryngeal Mask Co., Nicosia, Cyprus) in elderly patients during emergency airway management when combined with a single dose of propofol. Patients aged 65-80 years were enrolled. Anesthesia was induced with propofol 1 mg/kg, and then a blinded dose of remifentanil was infused over 30 s after confirming the patient's loss of consciousness. The dose of remifentanil was determined using Dixon's up-and-down method, starting at 0.5 µg/kg (a step size of 0.1 µg/kg). Insertion of the LMA was attempted 60 s after loss of consciousness. In total, 23 patients were recruited and the mean age ± standard deviation was 72 ± 3 years. The effective dose for successful LMA insertion in 50% of the patients (ED50) was 0.20 ± 0.05 µg/kg. No patient needed more than 0.3 µg/kg. Remifentanil 0.20 ± 0.05 µg/kg with propofol 1 mg/kg resulted in excellent LMA insertion in 50% of elderly patients without significant hemodynamic changes during emergency airway management.

  20. Bronchoscopic management of patients with symptomatic airway stenosis and prognostic factors for survival.

    Science.gov (United States)

    Okiror, Lawrence; Jiang, Li; Oswald, Nicola; Bille, Andrea; Rajesh, Pala; Bishay, Ehab; Steyn, Richard; Naidu, Babu; Kalkat, Maninder

    2015-05-01

    Interventional bronchoscopy is effective in the management of patients with symptomatic airway obstruction for both malignant and benign conditions. The main aim of this study is to report our experience with emergency interventional bronchoscopy in patients with symptomatic airway obstruction and identify prognostic factors for survival. This is a retrospective observational study of patients undergoing emergency interventional bronchoscopy over a 4-year period. Survival times were analyzed separately for patients with benign and malignant airway obstruction by the Kaplan-Meier method. Between June 2009 and July 2013, 168 emergency interventional bronchoscopies were performed in 112 patients for airway obstruction. The median age was 63 years (range, 20 to 86), and 91 patients (54%) patients were female. Seventy-two cases (43%) had airway obstruction due to malignant disease. There were 3 in-hospital deaths (2.7%). Median survival of the study population was 5.6 months (range, 0 to 51) with a median follow-up of 7.3 months (range, 0 to 51). Median survival for patients with malignant airway obstruction was 3.5 months (range, 0 to 21), and 9.8 months (range, 0.1 to 51) for those with benign disease. Airway intervention facilitated palliative chemotherapy in 32 patients (44%) of those with malignant airway obstruction. At multivariate analysis in patients with malignant airway obstruction, presence of stridor (hazard ratio 1.919, 95% confidence interval: 1.082 to 3.404, p = 0.026) and not receiving postprocedure chemotherapy (hazard ratio 2.05, 95% confidence interval: 1.156 to 3.636, p = 0.014) were independent prognostic factors for death. Emergency interventional bronchoscopy for airway obstruction is safe, relieved symptoms, and facilitated palliative chemotherapy, which improved survival. Copyright © 2015 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.

  1. Emergency airway management in critically injured patients: a survey of U.S. aero-medical transport programs.

    Science.gov (United States)

    James, Dorsha N; Voskresensky, Igor V; Jack, Meg; Cotton, Bryan A

    2009-06-01

    Pre-hospital airway management represents the intervention most likely to impact outcomes in critically injured patients. As such, airway management issues dominate quality improvement (QI) reviews of aero-medical programs. The purpose of this study was to evaluate current practice patterns of airway management in trauma among U.S. aero-medical service (AMS) programs. The Association of Air Medical Services (AAMS) Resource Guide from 2005 to 2006 was utilized to identify the e-mail addresses of all directors of U.S. aero-medical transport programs. Program directors from 182 U.S. aero-medical programs were asked to participate in an anonymous, web-based survey of emergency airway management protocols and practices. Non-responders to the initial request were contacted a second time by e-mail. 89 programs responded. 98.9% have rapid sequence intubation (RSI) protocols. 90% use succinylcholine, 70% use long-acting neuromuscular blockers (NMB) within their RSI protocol. 77% have protocols for mandatory in-flight sedation but only 13% have similar protocols for maintenance paralytics. 60% administer long-acting NMB immediately after RSI, 13% after confirmation of neurological activity. Given clinical scenarios, however, 97% administer long-acting NMB to patients with scene and in-flight Glasgow Coma Scale (GCS) of 3, even for brief transport times. The majority of AMS programs have well defined RSI and in-flight sedation protocols, while protocols for in-flight NMB are uncommon. Despite this, nearly all programs administer long-acting NMB following RSI, irrespective of GCS or flight time. Given the impact of in-flight NMB on initial assessment, early intervention, and injury severity scoring, a critical appraisal of current AMS airway management practices appears warranted.

  2. Congenital high airway obstruction syndrome: MR/US findings, effect on management, and outcome

    Energy Technology Data Exchange (ETDEWEB)

    Mong, Andrew; Johnson, Ann M.; Kramer, Sandra S.; Jaramillo, Diego [Children' s Hospital of Philadelphia, Department of Radiology, Philadelphia, PA (United States); Coleman, Beverly G. [Hospital of the University of Pennsylvania, Department of Radiology, Philadelphia, PA (United States); Hedrick, Holly L.; Flake, Alan; Johnson, Mark; Wilson, R.D.; Adzick, N.S. [Children' s Hospital of Philadelphia, The Center for Fetal Diagnosis and Treatment, Philadelphia, PA (United States); Kreiger, Portia [Children' s Hospital of Philadelphia, Department of Pathology and Laboratory Medicine, Philadelphia, PA (United States)

    2008-11-15

    Congenital high airway obstruction syndrome (CHAOS) is a rare disorder defined as any fetal abnormality that obstructs the larynx or trachea. Prompt airway intervention at delivery after accurate prenatal diagnosis may allow survival of this otherwise fatal condition. To identify prenatal MRI findings in CHAOS, to compare these findings with those of fetal US, to determine if imaging alters diagnosis and management decisions, and to correlate prenatal with postnatal imaging findings. Records and MRI scans of ten fetuses with CHAOS were reviewed, and the findings correlated with outside and same-day fetal US and postnatal imaging findings. Fetal lung volumes were measured on MRI scans. Large lung volumes were found in 90% of the fetuses. Increased lung signal intensity, inverted diaphragm, and a dilated, fluid-filled lower airway were identified in all. The obstruction level was identified in 90%. MRI changed screening US diagnosis in 70%, but was concordant with the tertiary care US imaging in 90%. Seven fetuses were terminated or died in utero, and three fetuses survived after ex utero intrapartum tracheostomy placement. Autopsy or bronchoscopy performed in 60% confirmed CHAOS. Postnatal chest radiographs and CT showed hyperinflation, while US and fluoroscopy showed diminished diaphragmatic motion. MRI demonstrates large lung volumes, increased lung signal intensity, inverted diaphragm, and dilated fluid-filled lower airway, and usually identifies the obstruction level. The degree of correlation between MRI and tertiary prenatal US is high, but CHAOS is frequently misdiagnosed on screening US. Correct diagnosis may enable planned airway management. Voluminous lungs and diaphragmatic abnormalities persist on postnatal imaging. (orig.)

  3. Congenital high airway obstruction syndrome: MR/US findings, effect on management, and outcome

    International Nuclear Information System (INIS)

    Mong, Andrew; Johnson, Ann M.; Kramer, Sandra S.; Jaramillo, Diego; Coleman, Beverly G.; Hedrick, Holly L.; Flake, Alan; Johnson, Mark; Wilson, R.D.; Adzick, N.S.; Kreiger, Portia

    2008-01-01

    Congenital high airway obstruction syndrome (CHAOS) is a rare disorder defined as any fetal abnormality that obstructs the larynx or trachea. Prompt airway intervention at delivery after accurate prenatal diagnosis may allow survival of this otherwise fatal condition. To identify prenatal MRI findings in CHAOS, to compare these findings with those of fetal US, to determine if imaging alters diagnosis and management decisions, and to correlate prenatal with postnatal imaging findings. Records and MRI scans of ten fetuses with CHAOS were reviewed, and the findings correlated with outside and same-day fetal US and postnatal imaging findings. Fetal lung volumes were measured on MRI scans. Large lung volumes were found in 90% of the fetuses. Increased lung signal intensity, inverted diaphragm, and a dilated, fluid-filled lower airway were identified in all. The obstruction level was identified in 90%. MRI changed screening US diagnosis in 70%, but was concordant with the tertiary care US imaging in 90%. Seven fetuses were terminated or died in utero, and three fetuses survived after ex utero intrapartum tracheostomy placement. Autopsy or bronchoscopy performed in 60% confirmed CHAOS. Postnatal chest radiographs and CT showed hyperinflation, while US and fluoroscopy showed diminished diaphragmatic motion. MRI demonstrates large lung volumes, increased lung signal intensity, inverted diaphragm, and dilated fluid-filled lower airway, and usually identifies the obstruction level. The degree of correlation between MRI and tertiary prenatal US is high, but CHAOS is frequently misdiagnosed on screening US. Correct diagnosis may enable planned airway management. Voluminous lungs and diaphragmatic abnormalities persist on postnatal imaging. (orig.)

  4. Drug development for airway diseases: looking forward

    NARCIS (Netherlands)

    Holgate, Stephen; Agusti, Alvar; Strieter, Robert M.; Anderson, Gary P.; Fogel, Robert; Bel, Elisabeth; Martin, Thomas R.; Reiss, Theodore F.

    2015-01-01

    Advancing drug development for airway diseases beyond the established mechanisms and symptomatic therapies requires redefining the classifications of airway diseases, considering systemic manifestations, developing new tools and encouraging collaborations

  5. Supraglottic devices as alternative equipment to airway management in state of sudden cardiac arrest

    Directory of Open Access Journals (Sweden)

    Rafał Czyż

    2017-08-01

    All of supraglottic devices are characterized by easiness in applying without experience in use them. Additionally time need to airway management in use of them is many times shorter than with traditional endotracheal intubation. Fundamental defect in these devices is a fact that they don’t provide total safety before aspiration for chime. Current literature shows us that supraglottic airway devices are perfect alternative to endotracheal intubation.

  6. Airway management education: simulation based training versus non-simulation based training-A systematic review and meta-analyses.

    Science.gov (United States)

    Sun, Yanxia; Pan, Chuxiong; Li, Tianzuo; Gan, Tong J

    2017-02-01

    Simulation-based training (SBT) has become a standard for medical education. However, the efficacy of simulation based training in airway management education remains unclear. The aim of this study was to evaluate all published evidence comparing the effectiveness of SBT for airway management versus non-simulation based training (NSBT) on learner and patient outcomes. Systematic review with meta-analyses were used. Data were derived from PubMed, EMBASE, CINAHL, Scopus, the Cochrane Controlled Trials Register and Cochrane Database of Systematic Reviews from inception to May 2016. Published comparative trials that evaluated the effect of SBT on airway management training in compared with NSBT were considered. The effect sizes with 95% confidence intervals (CI) were calculated for outcomes measures. Seventeen eligible studies were included. SBT was associated with improved behavior performance [standardized mean difference (SMD):0.30, 95% CI: 0.06 to 0.54] in comparison with NSBT. However, the benefits of SBT were not seen in time-skill (SMD:-0.13, 95% CI: -0.82 to 0.52), written examination score (SMD: 0.39, 95% CI: -0.09 to 0.86) and success rate of procedure completion on patients [relative risk (RR): 1.26, 95% CI: 0.96 to 1.66]. SBT may be not superior to NSBT on airway management training.

  7. Effects of advanced life support on patients who suffered cardiac arrest outside of hospital and were defibrillated.

    Science.gov (United States)

    Hagihara, Akihito; Onozuka, Daisuke; Nagata, Takashi; Hasegawa, Manabu

    2018-01-01

    The effects and relative benefits of advanced airway management and epinephrine on patients with out-of-hospital cardiac arrest (OHCA) who were defibrillated are not well understood. This was a prospective observational study. Using data of all out-of-hospital cardiac arrest cases occurring between 2005 and 2013 in Japan, hierarchical logistic regression and conditional logistic regression along with time-dependent propensity matching were performed. Outcome measures were survival and minimal neurological impairment [cerebral performance category (CPC) 1 or 2] at 1month after the event. We analyzed 37,873 cases that met the inclusion criteria. Among propensity-matched patients, advanced airway management and/or prehospital epinephrine use was related to decreased rates of 1-month survival (adjusted odds ratio 0.88, 95% confidence interval 0.80 to 0.97) and CPC (1, 2) (adjusted odds ratio 0.56, 95% confidence interval 0.48 to 0.66). Advanced airway management was related to decreased rates of 1-month survival (adjusted odds ratio 0.89, 95% confidence interval 0.81to 0.98) and CPC (1, 2) (adjusted odds ratio 0.54, 95% confidence interval 0.46 to 0.64) in patients who did not receive epinephrine, whereas epinephrine use was not related to the outcome measures. In defibrillated patients with OHCA, advanced airway management and/or epinephrine are related to reduced long-term survival, and advanced airway management is less beneficial than epinephrine. However, the proportion of patients with OHCA who responded to an initial shock was very low in the study subjects, and the external validity of our findings might be limited. Copyright © 2017 Elsevier Inc. All rights reserved.

  8. Airway management for occipital encephalocele in neonatal patients: A review of 17 cases

    Directory of Open Access Journals (Sweden)

    Zeynep Baysal Yildirim

    2011-01-01

    Full Text Available Introduction: Encephalocele, midline defect of cranial bone fusion, occurs most frequently in the occipital region. Airway management in pediatric patients with craniofacial disorders poses many challenges to the anesthesiologist. The purpose of this study is to describe the airway problems encountered for such cases, and describe how these problems were managed. Materials and Methods: We reviewed the charts of occipital encephalocele newborn that were treated by surgical correction in Harran University Hospital during 2006-2008. The collected data were categorized into preoperative, intraoperative, and postoperative data. Results: The mean age of the patients was 5.17 days. Of these 17 patients, eight patients (47.1% had hydrocephaly, one patient (5.8% with Dandy Walker syndrome. Micrognathia, macroglossia, restriction in neck movements were recorded as the reasons in six cases each. No major anesthetic complication was found. Conclusions: We reported perioperative management in 17 occipital encephalocele infant. Comprehensive care during peroperative period is essential for successful outcome.

  9. A retropharyngeal-mediastinal hematoma with supraglottic and tracheal obstruction: The role of multidisciplinary airway management

    Directory of Open Access Journals (Sweden)

    Birkholz Torsten

    2010-01-01

    Full Text Available A 77-year-old man suffered hypoxemic cardiac arrest by supraglottic and tracheal airway obstruction in the emergency department. A previously unknown cervical fracture had caused a traumatic retropharyngeal-mediastinal hematoma. A lifesaving surgical emergency tracheostomy succeeded. Supraglottic and tracheal obstruction by a retropharyngeal-mediastinal hematoma with successful resuscitation via emergency tracheostomy after hypoxemic cardiac arrest has never been reported in a context of trauma. This clinically demanding case outlines the need for multidisciplinary airway management systems with continuous training and well-implemented guidelines. Only multidisciplinary staff preparedness and readily available equipments for the unanticipated difficult airway solved the catastrophic clinical situation.

  10. Degrees of reality: airway anatomy of high-fidelity human patient simulators and airway trainers.

    Science.gov (United States)

    Schebesta, Karl; Hüpfl, Michael; Rössler, Bernhard; Ringl, Helmut; Müller, Michael P; Kimberger, Oliver

    2012-06-01

    Human patient simulators and airway training manikins are widely used to train airway management skills to medical professionals. Furthermore, these patient simulators are employed as standardized "patients" to evaluate airway devices. However, little is known about how realistic these patient simulators and airway-training manikins really are. This trial aimed to evaluate the upper airway anatomy of four high-fidelity patient simulators and two airway trainers in comparison with actual patients by means of radiographic measurements. The volume of the pharyngeal airspace was the primary outcome parameter. Computed tomography scans of 20 adult trauma patients without head or neck injuries were compared with computed tomography scans of four high-fidelity patient simulators and two airway trainers. By using 14 predefined distances, two cross-sectional areas and three volume parameters of the upper airway, the manikins' similarity to a human patient was assessed. The pharyngeal airspace of all manikins differed significantly from the patients' pharyngeal airspace. The HPS Human Patient Simulator (METI®, Sarasota, FL) was the most realistic high-fidelity patient simulator (6/19 [32%] of all parameters were within the 95% CI of human airway measurements). The airway anatomy of four high-fidelity patient simulators and two airway trainers does not reflect the upper airway anatomy of actual patients. This finding may impact airway training and confound comparative airway device studies.

  11. Successful anesthetic and airway management in Coffin-Siris syndrome with congenital heart disease: Case report

    Directory of Open Access Journals (Sweden)

    Dilek Altun

    2016-10-01

    Thinking that the practicing anesthetist needs to have appropriate knowledge for this entity and the equipment for managing difficult airway should readily be available. One of these patients which successfully managed without any complication was described in this brief report.

  12. Airway skills training using a human patient simulator

    African Journals Online (AJOL)

    Thesegan Moodley

    2016-04-11

    Apr 11, 2016 ... Airway management problems may be particularly challenging to junior doctors.1 ... They respond to real-time, real-life clinical ... Keywords: human patient simulator, simulation, airway management, psychomotor skills.

  13. Fluid structure interaction simulations of the upper airway in obstructive sleep apnea patients before and after maxillomandibular advancement surgery.

    Science.gov (United States)

    Chang, Kwang K; Kim, Ki Beom; McQuilling, Mark W; Movahed, Reza

    2018-06-01

    The purpose of this study was to analyze pharyngeal airflow using both computational fluid dynamics (CFD) and fluid structure interactions (FSI) in obstructive sleep apnea patients before and after maxillomandibular advancement (MMA) surgery. The airflow characteristics before and after surgery were compared with both CFD and FSI. In addition, the presurgery and postsurgery deformations of the airway were evaluated using FSI. Digitized pharyngeal airway models of 2 obstructive sleep apnea patients were generated from cone-beam computed tomography scans before and after MMA surgery. CFD and FSI were used to evaluate the pharyngeal airflow at a maximum inspiration rate of 166 ml per second. Standard steady-state numeric formulations were used for airflow simulations. Airway volume increased, pressure drop decreased, maximum airflow velocity decreased, and airway resistance dropped for both patients after the MMA surgery. These findings occurred in both the CFD and FSI simulations. The FSI simulations showed an area of marked airway deformation in both patients before surgery, but this deformation was negligible after surgery for both patients. Both CFD and FSI simulations produced airflow results that indicated less effort was needed to breathe after MMA surgery. The FSI simulations demonstrated a substantial decrease in airway deformation after surgery. These beneficial changes positively correlated with the large improvements in polysomnography outcomes after MMA surgery. Copyright © 2018 American Association of Orthodontists. Published by Elsevier Inc. All rights reserved.

  14. A child with a difficult airway: what do I do next?

    Science.gov (United States)

    Engelhardt, Thomas; Weiss, Markus

    2012-06-01

    Difficulties in pediatric airway management are common and continue to result in significant morbidity and mortality. This review reports on current concepts in approaching a child with a difficult airway. Routine airway management in healthy children with normal airways is simple in experienced hands. Mask ventilation (oxygenation) is always possible and tracheal intubation normally simple. However, transient hypoxia is common in these children usually due to unexpected anatomical and functional airway problems or failure to ventilate during rapid sequence induction. Anatomical airway problems (upper airway collapse and adenoid hypertrophy) and functional airway problems (laryngospasm, bronchospasm, insufficient depth of anesthesia and muscle rigidity, gastric hyperinflation, and alveolar collapse) require urgent recognition and treatment algorithms due to insufficient oxygen reserves. Early muscle paralysis and epinephrine administration aids resolution of these functional airway obstructions. Children with an 'impaired' normal (foreign body, allergy, and inflammation) or an expected difficult (scars, tumors, and congenital) airway require careful planning and expertise. Training in the recognition and management of these different situations as well as a suitably equipped anesthesia workstation and trained personnel are essential. The healthy child with an unexpected airway problem requires clear strategies. The 'impaired' normal pediatric airway may be handled by anesthetists experienced with children, whereas the expected difficult pediatric airway requires dedicated pediatric anesthesia specialist care and should only be managed in specialized centers.

  15. Multidisciplinary Difficult Airway Course: An Essential Educational Component of a Hospital-Wide Difficult Airway Response Program.

    Science.gov (United States)

    Leeper, W Robert; Haut, Elliott R; Pandian, Vinciya; Nakka, Sajan; Dodd-O, Jeffrey; Bhatti, Nasir; Hunt, Elizabeth A; Saheed, Mustapha; Dalesio, Nicholas; Schiavi, Adam; Miller, Christina; Kirsch, Thomas D; Berkow, Lauren

    2018-04-05

    A hospital-wide difficult airway response team was developed in 2008 at The Johns Hopkins Hospital with three central pillars: operations, safety monitoring, and education. The objective of this study was to assess the outcomes of the educational pillar of the difficult airway response team program, known as the multidisciplinary difficult airway course (MDAC). The comprehensive, full-day MDAC involves trainees and staff from all provider groups who participate in airway management. The MDAC occurs within the Johns Hopkins Medicine Simulation Center approximately four times per year and uses a combination of didactic lectures, hands-on sessions, and high-fidelity simulation training. Participation in MDAC is the main intervention being investigated in this study. Data were collected prospectively using course evaluation survey with quantitative and qualitative components, and prepost course knowledge assessment multiple choice questions (MCQ). Outcomes include course evaluation scores and themes derived from qualitative assessments, and prepost course knowledge assessment MCQ scores. Tertiary care academic hospital center PARTICIPANTS: Students, residents, fellows, and practicing physicians from the departments of Surgery, Otolaryngology Head and Neck Surgery, Anesthesiology/Critical Care Medicine, and Emergency Medicine; advanced practice providers (nurse practitioners and physician assistants), nurse anesthetists, nurses, and respiratory therapists. Totally, 23 MDACs have been conducted, including 499 participants. Course evaluations were uniformly positive with mean score of 86.9 of 95 points. Qualitative responses suggest major value from high-fidelity simulation, the hands-on skill stations, and teamwork practice. MCQ scores demonstrated significant improvement: median (interquartile range) pre: 69% (60%-81%) vs post: 81% (72%-89%), p < 0.001. Implementation of a MDAC successfully disseminated principles and protocols to all airway providers. Demonstrable

  16. Comparison of 3 airway access techniques during suspected spine injury management in American football.

    Science.gov (United States)

    Toler, Julianne D; Petschauer, Meredith A; Mihalik, Jason P; Oyama, Sakiko; Halverson, S Doug; Guskiewicz, Kevin M

    2010-03-01

    To determine how head movement and time to access airway were affected by 3 emergency airway access techniques used in American football. Prospective counterbalanced design. University research laboratory. Eighteen certified athletic trainers (ATCs) and 18 noncertified students (NCSs). Each participant performed 1 trial of each of the 3 after airway access techniques: quick release mechanism (QRM), cordless screwdriver (CSD), and pocket mask insertion (PMI). Time to task completion in seconds, head movement in each plane (sagittal, frontal, and transverse), maximum head movement in each plane, helmet movement in each plane, and maximum helmet movement in each plane. We observed a significant difference between all 3 techniques with respect to time required to achieve airway access (F(2,68) = 263.88; P football athlete experiencing respiratory arrest in the presence of a suspected cervical spine injury. In the event the athlete does not present with respiratory arrest, the facemask may be removed carefully with a pocket mask ready. Medical professionals must be familiar with differences in equipment and the effects these may have on the management of the spine-injured athlete.

  17. Analysis of a Dynamic Multi-Track Airway Concept for Air Traffic Management

    Science.gov (United States)

    Wing, David J.; Smith, Jeremy C.; Ballin, Mark G.

    2008-01-01

    The Dynamic Multi-track Airways (DMA) Concept for Air Traffic Management (ATM) proposes a network of high-altitude airways constructed of multiple, closely spaced, parallel tracks designed to increase en-route capacity in high-demand airspace corridors. Segregated from non-airway operations, these multi-track airways establish high-priority traffic flow corridors along optimal routes between major terminal areas throughout the National Airspace System (NAS). Air traffic controllers transition aircraft equipped for DMA operations to DMA entry points, the aircraft use autonomous control of airspeed to fly the continuous-airspace airway and achieve an economic benefit, and controllers then transition the aircraft from the DMA exit to the terminal area. Aircraft authority within the DMA includes responsibility for spacing and/or separation from other DMA aircraft. The DMA controller is responsible for coordinating the entry and exit of traffic to and from the DMA and for traffic flow management (TFM), including adjusting DMA routing on a daily basis to account for predicted weather and wind patterns and re-routing DMAs in real time to accommodate unpredicted weather changes. However, the DMA controller is not responsible for monitoring the DMA for traffic separation. This report defines the mature state concept, explores its feasibility and performance, and identifies potential benefits. The report also discusses (a) an analysis of a single DMA, which was modeled within the NAS to assess capacity and determine the impact of a single DMA on regional sector loads and conflict potential; (b) a demand analysis, which was conducted to determine likely city-pair candidates for a nationwide DMA network and to determine the expected demand fraction; (c) two track configurations, which were modeled and analyzed for their operational characteristic; (d) software-prototype airborne capabilities developed for DMA operations research; (e) a feasibility analysis of key attributes in

  18. Management of benign stenoses of the large airways in the university hospital in Prague, Czech Republic, in 1998-2003.

    Science.gov (United States)

    Marel, Miloslav; Pekarek, Zdenek; Spasova, Irena; Pafko, Pavel; Schutzner, Jan; Betka, Jan; Pospisil, Ronald

    2005-01-01

    Clinically significant benign stenoses of the large airways develop in about 1% of patients after intubation. The management of benign stenoses is not unified around the world, nor are there any accepted methods for their screening. The purpose of this study is to describe and compare results of interventional bronchoscopy and surgical therapy of benign stenoses as well as to propose an algorithm for the management of this airways disorder. Prospective study on 80 consecutive patients with benign stenoses of the large airways admitted to the Pulmonary Department of the University Hospital of Prague-Motol. Sixty-two patients developed stenoses after endotracheal intubation or tracheostomy, in 18 patients the stenosis was caused by other diseases or pathological situations. Thirty-eight patients were sent for surgical resection of the stenotic part of the airways. 2 surgically treated patients developed recurrence of the stenosis and had to be reoperated on. Narrowing of the trachea at the site of end-to-end anastomosis developed in 6 other patients and was cured by interventional bronchoscopy. The remaining 42 patients were treated by interventional bronchoscopy (Nd-YAG laser, electrocautery, stent) which was curative in 35 patients. Sixty-five patients were alive at the time of evaluation, 15 patients died. Five of them died between 3 and 14 (median 4) months after surgery from a disease other than airway stenosis. Ten nonresected patients also died, with 1 exception, due to a disease other than airway stenosis; the median survival was 9 months. We recommend to assess the patient for surgery after the initial diagnosis and therapeutic bronchoscopy with dilatation of the stenosis. If the patient is not a suitable candidate for resection, interventional bronchoscopy is an appropriate alternative for the management of benign stenoses of the large airways. Copyright (c) 2005 S. Karger AG, Basel.

  19. [Etiology and airway management in children with tracheobronchomalacia].

    Science.gov (United States)

    Yin, Yong; Schonfeld, Tommy; Chen, Tong-xin

    2009-02-01

    To investigate etiology and airway management in children with tracheobronchomalacia. Bronchoscopic examinations were performed in 671 children. The cases with tracheomalacia and bronchomalacia were analyzed in etiopathogenesis and summarized their therapy simultaneously. Bronchoscopic examination indicated tracheomalacia and bronchomalacia in 148 cases, tracheomalacia in 77 cases and bronchomalacia in 71 cases. Among the cases with tracheomalacia, compression by vascular rings was found in 46 cases, incorporated congenital esophageal atresia with tracheoesophageal fistula was found in 5 cases, tracheomalacia was associated with tracheostoma and mechanical ventilation in 6 cases, with congenital airway malformation in 11 cases and isolated tracheomalacia was found in 4 cases. Among the cases with bronchomalacia, incorporated congenital cardiovascular malformation was found in 64 cases, congenital airway malformation in 6 cases and isolated bronchomalacia in 1 case. Ten children with anomalous innominate artery underwent aortopexy, twelve children with dextro-aorta arch with concomitant aberrant left subclavian artery and double aorta underwent arches vascular ring lysis, six children with pulmonary sling underwent plasty. Severe malacia segments were resected directly in four children during operation. Mechanical ventilation was performed in 38 children. Tracheostoma was performed in 4 children to treat tracheomalacia and bronchomalacia, it could relieve symptom to a certain extent. In 2 children metal stents were inserted into the bronchus for the treatment of bronchomalacia, one was successful and the other needed re-insertion of stent again, these two patients underwent balloon-dilatation in distal part of stent afterwards. The congenital cardiovascular malformation was the main reason to develop tracheobronchomalacia in children. The symptom of majority of the cases with cardiovascular malformation would be improved within 6 months after surgical intervention

  20. Intubations and airway management: An overview of Hassles through third millennium

    Directory of Open Access Journals (Sweden)

    Abdullah Alanazi

    2015-01-01

    Full Text Available Background: The placement of a tube into a patient′s trachea "the intubation" as we call is not as simple as it looks. It is a very tricky and tedious maneuver that entails skills to assess and perform. Nevertheless, often this is left to the chores of inefficient hands due to a paucity of the availability of experts. They seldom are able to complete the task and often wind up calling the attention of the unit. The present review is an attempt to describe the need to undertake intubation, the procedures and techniques, the complications, including morbidity and mortality and airway management. This overview includes explicit descriptions of the difficult airway which represents multifaceted interface amid patient factors, clinical setting, and skills of the practitioner. Materials and Methods: To accomplish the target, peer-reviewed English language articles published during third millennium up to 2013 were selected from Pub Med, Pub Med Central, Science Direct, Up-to-date, Med Line, comprehensive databases, Cochrane library, and the Internet (Google, Yahoo. Review of Literature: The review constituted a systematic search of literature on the requirements that necessitate the practice of intubation, different techniques that facilitate easy conduct of procedure, the complications, including, morbidity and mortality, and the airway management. Conclusion: Recording every single detail has been beyond the scope of this review, however; some aspects have been wrapped up in nutshell. Some areas of the review are too basic which the medics are well aware of and knowledgeable. Nevertheless, these are difficult to be dispensed with in consideration of their source to the awareness of a common man and a great majority of the patients.

  1. Guidelines and algorithms for managing the difficult airway.

    Science.gov (United States)

    Gómez-Ríos, M A; Gaitini, L; Matter, I; Somri, M

    2018-01-01

    The difficult airway constitutes a continuous challenge for anesthesiologists. Guidelines and algorithms are key to preserving patient safety, by recommending specific plans and strategies that address predicted or unexpected difficult airway. However, there are currently no "gold standard" algorithms or universally accepted standards. The aim of this article is to present a synthesis of the recommendations of the main guidelines and difficult airway algorithms. Copyright © 2017 Sociedad Española de Anestesiología, Reanimación y Terapéutica del Dolor. Publicado por Elsevier España, S.L.U. All rights reserved.

  2. Effect of simulation training on compliance with difficult airway management algorithms, technical ability, and skills retention for emergency cricothyrotomy.

    Science.gov (United States)

    Hubert, Vincent; Duwat, Antoine; Deransy, Romain; Mahjoub, Yazine; Dupont, Hervé

    2014-04-01

    The effectiveness of simulation is rarely evaluated. The aim of this study was to assess the impact of a short training course on the ability of anesthesiology residents to comply with current difficult airway management guidelines. Twenty-seven third-year anesthesiology residents were assessed on a simulator in a "can't intubate, can't ventilate" scenario before the training (the pretest) and then randomly 3, 6, or 12 months after training (the posttest). The scenario was built so that the resident was prompted to perform a cricothyrotomy. Compliance with airway management guidelines and the cricothyrotomy's duration and technical quality were assessed as a checklist score [0 to 10] and a global rating scale [7 to 35]. After training, all 27 residents (100%) complied with the airway management guidelines, compared with 17 (63%) in the pretest (P training session significantly improved the residents' compliance with guidelines and their performance of cricothyrotomy.

  3. Anesthetic concerns in a huge congenital sublingual swelling obscuring airway access

    Directory of Open Access Journals (Sweden)

    Nilesh Kumar

    2015-01-01

    Full Text Available Presence of intraoral pathology poses a great challenge during management of pediatric airway. We report management of big intraoral cystic swelling physically occupying the entire oral cavity restricting access to airway. Preintubation aspiration of swelling was done to decrease its size and make room for airway manipulation, followed by laryngoscopy and intubation in lateral position. Airway patency is at risk in postoperative period also, in this case, though the swelling decreased in size postoperatively but presence of significant edema required placement of tongue stitch and modified nasopharyngeal airway. Case report highlights simple maneuvers to manage a difficult case.

  4. Management of airway obstruction with nebulised adrenaline resulting in takotsubo cardiomyopathy: case report.

    Science.gov (United States)

    Keshtkar, F; Dale, O T; Bennett, W O; Hall, C E

    2016-09-01

    Takotsubo cardiomyopathy has been associated with the use of catecholamines; however, its development after the use of nebulised adrenaline for the management of acute airway obstruction has not previously been described. A 66-year-old man with squamous cell carcinoma of the larynx, with tumour-node-metastasis staging of T3N2cM0, confirmed by biopsy and computed tomography, presented to the emergency department with acute airway obstruction. He was treated twice with nebulised adrenaline and intravenous dexamethasone. After a period of 24 hours, cardiac rhythm changes were noted on telemetry. A 12-lead electrocardiogram showed widespread T-wave inversion and QT prolongation suggestive of an acute coronary syndrome. Coronary angiography demonstrated no coronary artery disease, but left ventricular angiography showed marked apical ballooning and apical wall akinesia consistent with a diagnosis of takotsubo cardiomyopathy. Takotsubo cardiomyopathy can mimic true ischaemic heart disease and the diagnosis requires a high index of suspicion in patients managed with nebulised adrenaline.

  5. Ultrasonography for clinical decision-making and intervention in airway management: From the mouth to the lungs and pleurae

    DEFF Research Database (Denmark)

    Kristensen, M. S.; Teoh, W. H.; Graumann, O.

    2014-01-01

    OBJECTIVES: To create a state-of-the-art overview of the new and expanding role of ultrasonography in clinical decision-making, intervention and management of the upper and lower airways, that is clinically relevant, up-to-date and practically useful for clinicians. METHODS: This is a narrative...... and help guide timing of removal of chest tubes by quantification of residual pneumothorax size. CONCLUSIONS: Ultrasonography used in conjunction with hands-on management of the upper and lower airways has multiple advantages. There is a rapidly growing body of evidence showing its benefits. TEACHING...

  6. Comparison Of The I-Gel Supraglottic And King Laryngotracheal Airways In A Simulated Tactical Environment.

    Science.gov (United States)

    March, Juan A; Tassey, Theresa E; Resurreccion, Noel B; Portela, Roberto C; Taylor, Stephen E

    2018-01-01

    When working in a tactical environment there are several different airway management options that exist. One published manuscript suggests that when compared to endotracheal intubation, the King LT laryngotracheal airway (KA) device minimizes time to successful tube placement and minimizes exposure in a tactical environment. However, comparison of two different blind insertion supraglottic airway devices in a tactical environment has not been performed. This study compared the I-Gel airway (IGA) to the KA in a simulated tactical environment, to determine if one device is superior in minimizing exposure and minimizing time to successful tube placement. This prospective randomized cross over trial was performed using the same methods and tactical environment employed in a previously published study, which compared endotracheal intubation versus the KA in a tactical environment. The tactical environment was simulated with a one-foot vertical barrier. The participants were paramedic students who wore an Advanced Combat Helmet (ACH) and a ballistic vest (IIIA) during the study. Participants were then randomized to perform tactical airway management on an airway manikin with either the KA or the IGA, and then again using the alternate device. The participants performed a low military type crawl and remained in this low position during each tube placement. We evaluated the time to successful tube placement between the IGA and KA. During attempts, participants were videotaped to monitor their height exposure above the barrier. Following completion, participants were asked which airway device they preferred. Data was analyzed using Student's t-test across the groups for time to ventilation and height of exposure. In total 19 paramedic students who were already at the basic EMT level participated. Time to successful placement for the KA was 39.7 seconds (95%CI: 32.7-46.7) versus 14.4 seconds (95%CI: 12.0-16.9) for the IGA, p tactical environment placement of the IGA for

  7. Percutaneous dilational tracheotomy for airway management in a newborn with Pierre-Robin syndrome and a glossopharyngeal web.

    Science.gov (United States)

    Pirat, Arash; Candan, Selim; Unlükaplan, Aytekin; Kömürcü, Ozgür; Kuşlu, Selim; Arslan, Gülnaz

    2012-04-01

    Pierre-Robin syndrome (PRS) is often associated with difficulty in endotracheal intubation. We present the use of percutaneous dilational tracheotomy (PDT) for airway management of a newborn with PRS and a glossopharyngeal web. A 2-day-old term newborn with PRS and severe obstructive dyspnea was evaluated by the anesthesiology team for airway management. A direct laryngoscopy revealed a glossopharyngeal web extending from the base of the tongue to the posterior pharyngeal wall. The infant was spontaneously breathing through a 2 mm diameter fistula in the center of this web. It was decided that endotracheal intubation was impossible, and a PDT was planned. The trachea of the newborn was cannulated, using a 20 gauge peripheral venous catheter and a 0.71 mm guide wire was introduced through this catheter. Using 5 French, 7 French, 9 French, and 11 French central venous catheter kit dilators, staged tracheotomy stoma dilation was performed. By inserting a size 3.0 tracheotomy cannula, PDT was successfully completed in this newborn. This case describes the successful use of PDT for emergency airway management of a newborn with PRS and glossopharyngeal web.

  8. Awake Craniotomy: A New Airway Approach.

    Science.gov (United States)

    Sivasankar, Chitra; Schlichter, Rolf A; Baranov, Dimitry; Kofke, W Andrew

    2016-02-01

    Awake craniotomies have been performed regularly at the University of Pennsylvania since 2004. Varying approaches to airway management are described for this procedure, including intubation with an endotracheal tube and use of a laryngeal mask airway, simple facemask, or nasal cannula. In this case series, we describe the successful use (i.e., no need for endotracheal intubation related to inadequate gas exchange) of bilateral nasopharyngeal airways in 90 patients undergoing awake craniotomies. The use of nasopharyngeal airways can ease the transition between the asleep and awake phases of the craniotomy without the need to stimulate the airway. Our purpose was to describe our experience and report adverse events related to this technique.

  9. Extraglottic airway devices: technology update

    Directory of Open Access Journals (Sweden)

    Sharma B

    2017-08-01

    Full Text Available Bimla Sharma, Chand Sahai, Jayashree Sood Department of Anaesthesiology, Pain and Perioperative Medicine, Sir Ganga Ram Hospital, New Delhi, India Abstract: Extraglottic airway devices (EADs have revolutionized the field of airway management. The invention of the laryngeal mask airway was a game changer, and since then, there have been several innovations to improve the EADs in design, functionality, safety and construction material. These have ranged from changes in the shape of the mask, number of cuffs and material used, like rubber, polyvinylchloride and latex. Phthalates, which were added to the construction material in order to increase device flexibility, were later omitted when this chemical was found to have serious adverse reproductive outcomes. The various designs brought out by numerous companies manufacturing EADs resulted in the addition of several devices to the airway market. These airway devices were put to use, many of them with inadequate or no evidence base regarding their efficacy and safety. To reduce the possibility of compromising the safety of the patient, the Difficult Airway Society (DAS formed the Airway Device Evaluation Project Team (ADEPT to strengthen the evidence base for airway equipment and vet the new extraglottic devices. A preuse careful analysis of the design and structure may help in better understanding of the functionality of a particular device. In the meantime, the search for the ideal EAD continues. Keywords: extraglottic airway devices, laryngeal mask airway, other extraglottic airway devices, safety, technology update

  10. Web-Based Learning for Emergency Airway Management in Anesthesia Residency Training.

    Science.gov (United States)

    Hindle, Ada; Cheng, Ji; Thabane, Lehana; Wong, Anne

    2015-01-01

    Introduction. Web-based learning (WBL) is increasingly used in medical education; however, residency training programs often lack guidance on its implementation. We describe how the use of feasibility studies can guide the use of WBL in anesthesia residency training. Methods. Two case-based WBL emergency airway management modules were developed for self-directed use by anesthesia residents. The feasibility of using this educational modality was assessed using a single cohort pretest/posttest design. Outcome measures included user recruitment and retention rate, perceptions of educational value, and knowledge improvement. The differences between pre- and postmodule test scores and survey Likert scores were analysed using the paired t test. Results. Recruitment and retention rates were 90% and 65%, respectively. User-friendliness of the modules was rated highly. There was a significant improvement in perceptions of the value of WBL in the postsurvey. There was a significant knowledge improvement of 29% in the postmodule test. Conclusions. Feasibility studies can help guide appropriate use of WBL in curricula. While our study supported the potential feasibility of emergency airway management modules for training, collaboration with other anesthesia residency programs may enable more efficient development, implementation, and evaluation of this resource-intensive modality in anesthesia education and practice.

  11. Web-Based Learning for Emergency Airway Management in Anesthesia Residency Training

    Directory of Open Access Journals (Sweden)

    Ada Hindle

    2015-01-01

    Full Text Available Introduction. Web-based learning (WBL is increasingly used in medical education; however, residency training programs often lack guidance on its implementation. We describe how the use of feasibility studies can guide the use of WBL in anesthesia residency training. Methods. Two case-based WBL emergency airway management modules were developed for self-directed use by anesthesia residents. The feasibility of using this educational modality was assessed using a single cohort pretest/posttest design. Outcome measures included user recruitment and retention rate, perceptions of educational value, and knowledge improvement. The differences between pre- and postmodule test scores and survey Likert scores were analysed using the paired t test. Results. Recruitment and retention rates were 90% and 65%, respectively. User-friendliness of the modules was rated highly. There was a significant improvement in perceptions of the value of WBL in the postsurvey. There was a significant knowledge improvement of 29% in the postmodule test. Conclusions. Feasibility studies can help guide appropriate use of WBL in curricula. While our study supported the potential feasibility of emergency airway management modules for training, collaboration with other anesthesia residency programs may enable more efficient development, implementation, and evaluation of this resource-intensive modality in anesthesia education and practice.

  12. The Difficult Airway Society 'ADEPT' guidance on selecting airway devices: the basis of a strategy for equipment evaluation.

    Science.gov (United States)

    Pandit, J J; Popat, M T; Cook, T M; Wilkes, A R; Groom, P; Cooke, H; Kapila, A; O'Sullivan, E

    2011-08-01

    Faced with the concern that an increasing number of airway management devices were being introduced into clinical practice with little or no prior evidence of their clinical efficacy or safety, the Difficult Airway Society formed a working party (Airway Device Evaluation Project Team) to establish a process by which the airway management community within the profession could itself lead a process of formal device/equipment evaluation. Although there are several national and international regulations governing which products can come on to the market and be legitimately sold, there has hitherto been no formal professional guidance relating to how products should be selected (i.e. purchased). The Airway Device Evaluation Project Team's first task was to formulate such advice, emphasising evidence-based principles. Team discussions led to a definition of the minimum level of evidence needed to make a pragmatic decision about the purchase or selection of an airway device. The Team concluded that this definition should form the basis of a professional standard, guiding those with responsibility for selecting airway devices. We describe how widespread adoption of this professional standard can act as a driver to create an infrastructure in which the required evidence can be obtained. Essential elements are that: (i) the Difficult Airway Society facilitates a coherent national network of research-active units; and (ii) individual anaesthetists in hospital trusts play a more active role in local purchasing decisions, applying the relevant evidence and communicating their purchasing decisions to the Difficult Airway Society. © 2011 The Authors. Anaesthesia © 2011 The Association of Anaesthetists of Great Britain and Ireland.

  13. Airway exploration in children

    Directory of Open Access Journals (Sweden)

    Fernando GÓMEZ-SÁEZ

    2018-03-01

    Full Text Available Introduction and objective: The management of the airways represents a constant challenge in pediatric practice. In the last years, bronchoscopy has become an essential technique in the diagnosis and treatment of various abnormalities of the child's respiratory system. The special characteristics of the pediatric airway and the differentiated pathology it presents give pediatric bronchoscopy its own entity. Pediatric bronchoscopy is a safe technique with many applications, both diagnostic and therapeutic. The use of both types of bronchoscopes (flexible and rigid allows to take advantage of each one of them. Flexible bronchoscopy in pediatrics is a relatively simple and low-risk procedure that provides anatomical and dynamic information on the airways, as well as cytological and microbiological studies. The simplicity and low risk of this technique, in addition to not requiring general anesthesia, allows it to be performed even at the head of the patient, which has led to an increasingly extensive field of indications. The purpose of this article is to provide a review on the timeliness of the pediatric bronchoscopy procedure, especially about its indications. Method: Narrative review. Conclusion: The endoscopic examination of the airway is a cost-effective technique in pediatrics, with little complications and can offer very valuable diagnostic information, as well as perform certain therapeutic procedures. It is recommended that all professionals involved in the management of patients with airway pathology should know their indications, contraindications, complications, as well as their therapeutic applications.

  14. Respiratory Care year in review 2013: airway management, noninvasive monitoring, and invasive mechanical ventilation.

    Science.gov (United States)

    Durbin, Charles G; Blanch, Lluís; Fan, Eddy; Hess, Dean R

    2014-04-01

    Fundamental to respiratory care practice are airway management, noninvasive monitoring, and invasive mechanical ventilation. The purpose of this paper is to review the recent literature related to these topics in a manner that is most likely to have interest to the readers of Respiratory Care.

  15. Management of Advanced Laryngeal Cancer

    Directory of Open Access Journals (Sweden)

    Patrick Sheahan

    2014-04-01

    Full Text Available Squamous cell carcinoma of the larynx continues to be the commonest head and neck cancer in many Western countries. The larynx plays a key role for many essential functions, including breathing, voice production, airway protection, and swallowing. The goals of laryngeal cancer treatment are thus to provide best possible oncologic control, while optimizing functional outcomes. In recent decades, the treatment paradigm for advanced laryngeal cancer has shifted from one of primary surgery (total laryngectomy as gold standard, toward non-surgical organ-preserving treatment using radiotherapy or chemoradiotherapy. However, concerns have emerged regarding functional outcomes after chemoradiotherapy, as well as possible decreased overall survival in patients with laryngeal cancer. The purpose of the present review is to review surgical and non-surgical options for treatment of advanced laryngeal cancer, as well as the evidence supporting each of these.

  16. Airway skills training using a human patient simulator | Moodley ...

    African Journals Online (AJOL)

    ... of airway management skills using the simulator. Participant satisfaction was much better in the simulator group. The importance of psychomotor reinforcement should be borne in mind when designing simulation courses. Keywords: human patient simulator, simulation, airway management, psychomotor skills ...

  17. [Anaesthetic management in a paediatric patient with a difficult airway due to epidermolysis bullosa dystrophica].

    Science.gov (United States)

    Blázquez Gómez, E; Garcés Aletá, A; Monclus Diaz, E; Manen Berga, F; García-Aparicio, L; Ontanilla López, A

    2015-05-01

    Dystrophic epidermolysis bullosa (DEB) is a rare inherited disorder characterized by blistering after minimal trauma. These blisters tend to form dystrophic scars, leading to limiting and life-threatening sequelae. The anaesthetic management of patients with DEB is a challenge, even for the most experienced anaesthesiologists, but basic principles can help us prepare the plan of care. The main goals are to prevent trauma/infection of skin/mucous, and to establish a secure airway without causing bullae. Patient positioning and the instruments used to monitor vital signs and administering anaesthetic agents can cause new lesions. It is advisable to lubricate the instruments and to avoid adhesive material and shearing forces on the skin. Besides the implications of the comorbidities, there is a potential difficult intubation and difficult vascular access. Acute airway obstruction can occur due to airway instrumentation. We report the case of a patient diagnosed with EBD difficult airway and undergoing correction of syndactylyl and dental extractions. Copyright © 2014 Sociedad Española de Anestesiología, Reanimación y Terapéutica del Dolor. Publicado por Elsevier España, S.L.U. All rights reserved.

  18. Maxillofacial trauma patient: coping with the difficult airway

    Directory of Open Access Journals (Sweden)

    Barak Michal

    2009-05-01

    Full Text Available Abstract Establishing a secure airway in a trauma patient is one of the primary essentials of treatment. Any flaw in airway management may lead to grave morbidity and mortality. Maxillofacial trauma presents a complex problem with regard to the patient's airway. By definition, the injury compromises the patient's airway and it is, therefore, must be protected. In most cases, the patient undergoes surgery for maxillofacial trauma or for other, more severe, life-threatening injuries, and securing the airway is the first step in the introduction of general anaesthesia. In such patients, we anticipate difficult endotracheal intubation and, often, also difficult mask ventilation. In addition, the patient is usually regarded as having a "full stomach" and has not been cleared of a C-spine injury, which may complicate airway management furthermore. The time available to accomplish the task is short and the patient's condition may deteriorate rapidly. Both decision-making and performance are impaired in such circumstances. In this review, we discuss the complexity of the situation and present a treatment approach.

  19. Point-of-care ultrasound (POCUS) of the upper airway

    DEFF Research Database (Denmark)

    You-Ten, Kong Eric; Siddiqui, Naveed; Teoh, Wendy H

    2018-01-01

    is to provide an overview of the indications for point-of-care ultrasound (POCUS) of the upper airway. The use of US to guide and assist clinical airway management has potential benefits for both provider and patient. Ultrasound can be utilized to determine airway size and predict the appropriate diameter...... of single-lumen endotracheal tubes (ETTs), double-lumen ETTs, and tracheostomy tubes. Ultrasonography can differentiate tracheal, esophageal, and endobronchial intubation. Ultrasonography of the neck can accurately localize the cricothyroid membrane for emergency airway access and similarly identify...... tracheal rings for US-guided tracheostomy. In addition, US can identify vocal cord dysfunction and pathology before induction of anesthesia. A rapidly growing body of evidence showing ultrasonography used in conjunction with hands-on management of the airway may benefit patient care. Increasing awareness...

  20. Airway Management Dilemma in a Patient with Maxillofacial Injury ...

    African Journals Online (AJOL)

    He had tracheostomy and repair of the laceration under general anaesthesia. Anaesthesia was induced with intravenous ketamine with the patient in the left lateral position while traction on the tongue using a Magill's forceps ensured patency of the airway. A classical laryngeal mask airway was subsequently inserted to ...

  1. Current practice in airway management: A descriptive evaluation.

    Science.gov (United States)

    Kjonegaard, Rebecca; Fields, Willa; King, Major L

    2010-03-01

    Ventilator-associated pneumonia, a common complication of mechanical ventilation, could be reduced if health care workers implemented evidence-based practices that decrease the risk for this complication. To determine current practice and differences in practices between registered nurses and respiratory therapists in managing patients receiving mechanical ventilation. A descriptive comparative design was used. A convenience sample of 41 registered nurses and 25 respiratory therapists who manage critical care patients treated with mechanical ventilation at Sharp Grossmont Hospital, La Mesa, California, completed a survey on suctioning techniques and airway management practices. Descriptive and inferential statistics were used to analyze the data. Significant differences existed between nurses and respiratory therapists for hyperoxygenation before suctioning (P =.03). In the 2 groups, nurses used the ventilator for hyper-oxygenation more often, and respiratory therapists used a bag-valve device more often (P =.03). Respiratory therapists instilled saline (P <.001) and rinsed the closed system with saline after suctioning (P =.003) more often than nurses did. Nurses suctioned oral secretions (P <.001) and the nose of orally intubated patients (P =.01), brushed patients' teeth with a toothbrush (P<.001), and used oral swabs to clean the mouth (P <.001) more frequently than respiratory therapists did. Nurses and respiratory therapists differed significantly in the management of patients receiving mechanical ventilation. To reduce the risk of ventilator-associated pneumonia, both nurses and respiratory therapists must be consistent in using best practices when managing patients treated with mechanical ventilation.

  2. Airway Management in Maxillofacial Trauma: A Retrospective Review of 127 Cases

    Directory of Open Access Journals (Sweden)

    V Saraswat

    2008-01-01

    Maxillofacial injuries need special attention since it involves difficult airway due to fracture to facial bones, Further the airway is shared with surgeon and restrictions are imposed during surgery. Issues involved are time of surgery, preoperative airway assessment, type of intubation and way to achieve it, alternative methods available and their complications.

  3. Clearing the airway by an emergency care provider in the prehospital emergency care

    OpenAIRE

    NOVOTNÁ, Magdalena

    2008-01-01

    Clearing an obstructed airway to facilitate breathing is a critical element of airway management. It is the emergency care provider who administers first aid and he/she has to master the technique of opening the airway as well as the aspiration prevention. The right airway management may avert the life-threatening condition of an injured person. The thesis is focused on the possibilities of clearing the airway by the emergency care provider in the Central Bohemian region. Techniques of openin...

  4. Anesthetic and Airways Management of a Dog with Severe Tracheal Collapse during Intraluminal Stent Placement

    Directory of Open Access Journals (Sweden)

    M. Argano

    2013-01-01

    Full Text Available This case report describes the anesthetic and airways management of a dog affected by 4th degree tracheal collapse and undergoing endoscope-guided intraluminal stent placement. After premedication with acepromazine and butorphanol, general anesthesia was induced with propofol and maintained with intravenous propofol and butorphanol in constant rate infusion. During intraluminal stent placement, oxygen was supplemented by means of a simple and inexpensive handmade device, namely, a ureteral catheter inserted into the trachea and connected to an oxygen source, which allowed for the maintenance of airways’ patency and adequate patient’s oxygenation, without decreasing visibility in the surgical field or interfering with the procedure. The use of the technique described in the present paper was the main determinant of the successful anesthetic management and may be proposed for similar critical cases in which surgical manipulation of the tracheal lumen, which may potentially result in hypoxia by compromising airways patency, is required.

  5. Efficacy of a Conservative Weight Loss Program in the Long-Term Management of Chronic Upper Airway Obstruction

    Directory of Open Access Journals (Sweden)

    Ryan C. Case

    2009-01-01

    Full Text Available Objective. Obesity is a significant contributor to oxygen demand and dynamic airway obstruction. The objective of the current study is to determine the long-term success of conservative measures directed toward weight reduction on airway management without respect to specific airway disease etiology. Methods. Patients with chronic airway obstruction secondary anatomic lesions or obstructive sleep apnea were recruited and followed prospectively. Demographics, initial and final weights, diagnosis, and followup information were recorded. Patients were referred to a registered dietician, provided counseling, and started on a weight-loss regimen. Outcome measures were change in body mass index (BMI and rate of decannulation from weight loss alone. Results. Of fourteen patients, ten remained tracheostomy-dependent and four had high-grade lesions with the potential for improvement in oxygen demand and dynamic airway collapse with weight loss. The mean follow up period was 25 months. The mean change in BMI was an increase of 1.4 kg/m2 per patient. Conclusions. Conservative measures alone were not effective in achieving weight reduction in the population studied. This may be due to comorbid disease and poor compliance. The promise of decannulation was an insufficient independent motivator for weight loss in this study. Although the theoretical benefits of weight loss support its continued recommendation, the long-term success rate of conservative measures is low. More aggressive facilitated interventions including pharmacotherapy or bariatric surgery should be considered early in the course of treating airway disease complicated by obesity.

  6. [Management of malignant and benign airway stenosis by stent implantation].

    Science.gov (United States)

    Gyulai, Márton; Slavei, Krisztina; Pénzes, István; Strausz, János

    2006-11-12

    In the last few decades the different bronchoscopic procedures have gained an important role in the treatment of airway stenosis, and the number of implanted airway stents has also greatly increased. Between 1998 and 2004 the authors implanted altogether 108 airway prosthesis in 90 patients at the Institute of Pulmonology of Pest County. 58% of the patients were males, 42% females, the average age was 57.5 years, the average follow-up time was 7 months. On the basis of different etiology the patients were separated into two main groups. In 57% the airway stenosis was caused by malignant illnesses, in these cases stents can be used only with palliative purpose. However, in case of benign lesions they can offer a long-term solution and require an adequate follow-up of the patients. The authors' main aim was to get an overall picture of the interventions they had done by processing the data, with the help of the measurable characteristics that make possible to follow the airways' permeability and its changes. Analysing the results of the respiratory function and blood gas examinations they didn't find a significant difference inspite of the subjective improvement.

  7. Videolaryngoscopy versus Fiber-optic Intubation through a Supraglottic Airway in Children with a Difficult Airway: An Analysis from the Multicenter Pediatric Difficult Intubation Registry.

    Science.gov (United States)

    Burjek, Nicholas E; Nishisaki, Akira; Fiadjoe, John E; Adams, H Daniel; Peeples, Kenneth N; Raman, Vidya T; Olomu, Patrick N; Kovatsis, Pete G; Jagannathan, Narasimhan; Hunyady, Agnes; Bosenberg, Adrian; Tham, See; Low, Daniel; Hopkins, Paul; Glover, Chris; Olutoye, Olutoyin; Szmuk, Peter; McCloskey, John; Dalesio, Nicholas; Koka, Rahul; Greenberg, Robert; Watkins, Scott; Patel, Vikram; Reynolds, Paul; Matuszczak, Maria; Jain, Ranu; Khalil, Samia; Polaner, David; Zieg, Jennifer; Szolnoki, Judit; Sathyamoorthy, Kumar; Taicher, Brad; Riveros Perez, N Ricardo; Bhattacharya, Solmaletha; Bhalla, Tarun; Stricker, Paul; Lockman, Justin; Galvez, Jorge; Rehman, Mohamed; Von Ungern-Sternberg, Britta; Sommerfield, David; Soneru, Codruta; Chiao, Franklin; Richtsfeld, Martina; Belani, Kumar; Sarmiento, Lina; Mireles, Sam; Bilen Rosas, Guelay; Park, Raymond; Peyton, James

    2017-09-01

    The success rates and related complications of various techniques for intubation in children with difficult airways remain unknown. The primary aim of this study is to compare the success rates of fiber-optic intubation via supraglottic airway to videolaryngoscopy in children with difficult airways. Our secondary aim is to compare the complication rates of these techniques. Observational data were collected from 14 sites after management of difficult pediatric airways. Patient age, intubation technique, success per attempt, use of continuous ventilation, and complications were recorded for each case. First-attempt success and complications were compared in subjects managed with fiber-optic intubation via supraglottic airway and videolaryngoscopy. Fiber-optic intubation via supraglottic airway and videolaryngoscopy had similar first-attempt success rates (67 of 114, 59% vs. 404 of 786, 51%; odds ratio 1.35; 95% CI, 0.91 to 2.00; P = 0.16). In subjects less than 1 yr old, fiber-optic intubation via supraglottic airway was more successful on the first attempt than videolaryngoscopy (19 of 35, 54% vs. 79 of 220, 36%; odds ratio, 2.12; 95% CI, 1.04 to 4.31; P = 0.042). Complication rates were similar in the two groups (20 vs. 13%; P = 0.096). The incidence of hypoxemia was lower when continuous ventilation through the supraglottic airway was used throughout the fiber-optic intubation attempt. In this nonrandomized study, first-attempt success rates were similar for fiber-optic intubation via supraglottic airway and videolaryngoscopy. Fiber-optic intubation via supraglottic airway is associated with higher first-attempt success than videolaryngoscopy in infants with difficult airways. Continuous ventilation through the supraglottic airway during fiber-optic intubation attempts may lower the incidence of hypoxemia.

  8. Advances in the diagnosis and management of asthma in older adults.

    LENUS (Irish Health Repository)

    Al-Alawi, Mazen

    2013-12-28

    Global estimates on ageing predict an increased burden of asthma in the older population. Consequently, its recognition, diagnosis and management in clinical practice require optimization. This review aims to provide an update for clinicians highlighting advances in the understanding of the ageing process and immunosenescence together with their applicability to asthma from a diagnostic and therapeutic perspective. Ageing impacts airway responses, immune function and influences efficacy of emerging phenotype-specific therapies when applied to the elderly patient. Differentiating eosinophilic and neutrophilic disease accounts for atopic illness and distinguishes long-standing from late-onset asthma. Therapeutic challenges in drug delivery, treatment adherence and side effect profiles persist in the older patient while novel recording devices developed to aid detection of an adequate inhalation evaluates treatment effectiveness and compliance more accurately than previously attainable. Anti-cytokine therapies improve control of brittle asthma while bronchial thermoplasty is an option in refractory cases. Multi-dimensional intervention strategies prove best in the management of asthma in the older adult which remains a condition that is not rare but rarely diagnosed in this patient population.

  9. Do expandable metallic airway stents have a role in the management of patients with benign tracheobronchial disease?

    Science.gov (United States)

    Madden, Brendan P; Loke, Tuck-Kay; Sheth, Abhijat C

    2006-07-01

    With increasing availability many centers are deploying expandable metallic stents to manage patients with diverse endobronchial disorders. Although these devices have an important role in malignant disease their usefulness in benign large airway disorders is less defined. Between 1997 and 2005, 31 patients aged 34 to 83 years with benign large airway compromise secondary to tracheomalacia (n = 7), posttracheostomy stricture (n = 8), posttracheostomy rupture (n = 2), postpneumonectomy bronchopleural fistula (n = 2), stricture after lung transplantation (n = 3), lobectomy, tuberculosis, traumatic injury to right main bronchus (n = 1 patient each), and external compression of the airway secondary to achalasia, multinodular goiter, aortic aneurysm, right brachiocephalic artery aneurysm, right interrupted aortic arch, and dissecting aneurysm (n = 1 patient each) who were medically unfit for formal surgical intervention were treated by Ultraflex stent deployment. The range of follow-up was 1 week to 96 months. Stents were deployed under anesthesia using rigid bronchoscopy. Complications included granulation tissue formation (n = 11) treated with Nd: YAG laser ablation, stent migration (n = 1; stent removed, another deployed), metal fatigue (n = 1), stent removal (n = 1), mucus plugging (n = 2), and halitosis (n = 6) difficult to treat despite antibiotics. Thirteen patients died of unrelated causes between 1 week and 15 months after stent deployment. Endobronchial metallic stents should be considered only for selected patients with large airway compromise secondary to benign airway diseases for whom other medical comorbidities contraindicate formal airway surgery. Once deployed, they are difficult to remove, are associated with significant complications, and require prospective bronchoscopic surveillance and often further therapeutic intervention.

  10. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... many challenges, including medical, social, and financial. By learning more about how you can manage your disease every day, you can ultimately help find a ... Cycle of Breathing Technique Airway Clearance Techniques Autogenic ...

  11. Impossible Airway Requiring Venovenous Bypass for Tracheostomy

    Directory of Open Access Journals (Sweden)

    Johnathan Gardes

    2012-01-01

    Full Text Available The elective surgical airway is the definitive management for a tracheal stenotic lesion that is not a candidate for tracheal resection, or who has failed multiple-tracheal dilations. This case report details the management of a patient who has failed an elective awake tracheostomy secondary to the inability to be intubated as well as severe scar tissue at the surgical site. A combination of regional anesthesia and venovenous bypass is used to facilitate the surgical airway management of this patient. Cerebral oximetry and a multidisciplinary team approach aid in early detection of an oxygenation issue, as well as the emergent intervention that preserved this patient’s life.

  12. Successful Management of Airway Emergency in a Patient with Esophageal Cancer

    Directory of Open Access Journals (Sweden)

    Samina Park

    2015-05-01

    Full Text Available A 60-year-old man with advanced esophageal cancer was admitted for surgical placement of a feeding jejunostomy tube before commencement of chemoradiotherapy. His esophageal cancer had directly invaded the posterior tracheal wall, inducing a nearly total obstruction of the distal trachea. On the day before the surgery, respiratory failure developed due to tumor progression and tracheal edema. Tracheal intubation and mechanical ventilation were attempted without success. Application of veno-venous extracorporeal membrane oxygenation (ECMO corrected the patient’s respiratory acidosis and relieved his dyspnea. With full ECMO support, he underwent tracheal stent insertion. Two hours later, he was weaned from ECMO support uneventfully. This was a successful case of tracheal stenting for airway obstruction under rescue veno-venous ECMO.

  13. Difficult airway management with bonfils fiberscope in case of emergency: acute abdomen with ileus.

    Science.gov (United States)

    Maldini, Branka; Novotny, Zdenko; Letica-Brnadić, Renata; Brkljacić, Ana; Bartolek, Dubravka

    2012-09-01

    This clinical report describes an emergency case of a 49-year-old man, ASA E III status, with clinical symptoms of acute abdomen and ileus, who was scheduled for urgent surgery. Predictors of difficult intubation (Mallampati test Class III, short thyro-mental (management decided on one attempt of Bonfils fiberoptic intubation as primary intervention and urgent tracheotomy, if needed, as secondary intervention. Immediately after assuming supine position on the operating table, the patient lost consciousness and cardiac arrest developed. Successful intubation with oxygenation was followed by cardiopulmonary resuscitation. Upon stabilization of the patient's vital functions, urgent surgery was performed. In the emergency case presented, we succeeded quickly to secure the airway with Bonfils fiberoptic intubation, which allowed for appropriate oxygenation and starting resuscitation. The high risk of the possible aspiration was avoided by timely provision of airway in the experienced anesthetist's hands.

  14. Airway Clearance Techniques (ACTs)

    Science.gov (United States)

    ... infant or child manage their lung health, watch parents of children with CF and a respiratory therapist talk about the different techniques they use for airway ... Positive Expiratory Pressure High-Frequency Chest Wall Oscillation (the Vest) Follow ...

  15. Wire-guided (Seldinger technique intubation through a face mask in urgent, difficult and grossly distorted airways

    Directory of Open Access Journals (Sweden)

    Jake M Heier

    2012-01-01

    Full Text Available We report two cases of successful urgent intubation using a Seldinger technique for airway management through an anesthesia facemask, while maintaining ventilation in patients with difficult airways and grossly distorted airway anatomy. In both cases, conventional airway management techniques were predicted to be difficult or impossible, and a high likelihood for a surgical airway was present. This technique was chosen as it allows tracheal tube placement through the nares during spontaneous ventilation with the airway stented open and oxygen delivery with either continuous positive airway pressure and/or pressure support ventilation. This unhurried technique may allow intubation when other techniques are unsuitable, while maintaining control of the airway.

  16. Airway smooth muscle cells : regulators of airway inflammation

    NARCIS (Netherlands)

    Zuyderduyn, Suzanne

    2007-01-01

    Airways from asthmatic subjects are more responsive to bronchoconstrictive stimuli than airways from healthy subjects. Airway smooth muscle (ASM) cells mediate contraction of the airways by responding to the bronchoconstrictive stimuli, which was thought to be the primary role of ASM cells. In this

  17. Equine recurrent airway obstruction

    Directory of Open Access Journals (Sweden)

    Artur Niedźwiedź

    2014-10-01

    Full Text Available Equine Recurrent Airway Obstruction (RAO, also known as heaves or broken wind, is one of the most common disease in middle-aged horses. Inflammation of the airway is inducted by organic dust exposure. This disease is characterized by neutrophilic inflammation, bronchospasm, excessive mucus production and pathologic changes in the bronchiolar walls. Clinical signs are resolved in 3-4 weeks after environmental changes. Horses suffering from RAO are susceptible to allergens throughout their lives, therefore they should be properly managed. In therapy the most importanthing is to eliminate dustexposure, administration of corticosteroids and use bronchodilators to improve pulmonary function.

  18. Alcohol and airways function in health and disease.

    Science.gov (United States)

    Sisson, Joseph H

    2007-08-01

    The volatility of alcohol promotes the movement of alcohol from the bronchial circulation across the airway epithelium and into the conducting airways of the lung. The exposure of the airways through this route likely accounts for many of the biologic effects of alcohol on lung airway functions. The effect of alcohol on lung airway functions is dependent on the concentration, duration, and route of exposure. Brief exposure to mild concentrations of alcohol may enhance mucociliary clearance, stimulates bronchodilation, and probably attenuates the airway inflammation and injury observed in asthma and chronic obstructive pulmonary disease (COPD). Prolonged and heavy exposure to alcohol impairs mucociliary clearance, may complicate asthma management, and likely worsens outcomes including lung function and mortality in COPD patients. Nonalcohol congeners and alcohol metabolites act as triggers for airway disease exacerbations especially in atopic asthmatics and in Asian populations who have a reduced capacity to metabolize alcohol. Research focused on the mechanisms of alcohol-mediated changes in airway functions has identified specific mechanisms that mediate alcohol effects within the lung airways. These include prominent roles for the second messengers calcium and nitric oxide, regulatory kinases including PKG and PKA, alcohol- and acetaldehyde-metabolizing enzymes such as aldehyde dehydrogenase 2. The role alcohol may play in the pathobiology of airway mucus, bronchial blood flow, airway smooth muscle regulation, and the interaction with other airway exposure agents, such as cigarette smoke, represents opportunities for future investigation.

  19. Advanced gadolinia core and Toshiba advanced reactor management system

    International Nuclear Information System (INIS)

    Miyamoto, Toshiki; Yoshioka, Ritsuo; Ebisuya, Mitsuo

    1988-01-01

    At the Hamaoka Nuclear Power Station, Unit No. 3, advanced core design and core management technology have been adopted, significantly improving plant availability, operability and reliability. The outstanding technologies are the advanced gadolinia core (AGC) which utilizes gadolinium for the axial power distribution control, and Toshiba advanced reactor management system (TARMS) which uses a three-dimensional core physics simulator to calculate the power distribution. Presented here are the effects of these advanced technologies as observed during field testing. (author)

  20. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... infant or child manage their lung health, watch parents of children with CF and a respiratory therapist talk about the different techniques they use for airway ... Positive Expiratory Pressure High-Frequency Chest Wall Oscillation (the Vest) Follow ...

  1. Current evidence for the use of C-MAC videolaryngoscope in adult airway management: a review of the literature

    Directory of Open Access Journals (Sweden)

    Xue FS

    2017-07-01

    Full Text Available Fu-Shan Xue, Hui-Xian Li, Ya-Yang Liu, Gui-Zhen Yang Department of Anesthesiology, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China Abstract: The C-MAC videolaryngoscope is the first Macintosh-typed videolaryngoscope. Since the advent of its original version video Macintosh system in 1999, this device has been modified several times. A unique feature of C-MAC device is its ability to provide the 2 options of direct and video laryngoscopy with the same device. The available evidence shows that in patients with normal airways, C-MAC videolaryngoscope compared with direct laryngoscopy can provide comparable or better laryngeal views and exerts less force on maxillary incisors, but does not offer conclusive benefits with regard to intubation time, intubation success, number of intubation attempts, the use of adjuncts, and hemodynamic responses to intubation. In patients with predicted or known difficult airways, C-MAC videolaryngoscope can achieve a better laryngeal view, a higher intubation success rate and a shorter intubation time than direct laryngoscopy. Furthermore, the option to perform direct and video laryngoscopy with the same device makes C-MAC videolaryngoscope exceptionally useful for emergency intubation. In addition, the C-MAC videolaryngoscope is a very good tool for tracheal intubation teaching. However, tracheal intubation with C-MAC videolaryngoscope may occasionally fail and introduction of C-MAC videolaryngoscope in clinical practice must be accompanied by formal training programs in normal and difficult airway managements. Keywords: videolaryngoscopy, direct laryngoscopy, airway management, tracheal intubation, patient safety

  2. Three-dimensional changes to the upper airway after maxillomandibular advancement with counterclockwise rotation: a systematic review and meta-analysis.

    Science.gov (United States)

    Louro, R S; Calasans-Maia, J A; Mattos, C T; Masterson, D; Calasans-Maia, M D; Maia, L C

    2018-05-01

    The aim of this study was to evaluate the effect of counterclockwise (CCW) rotation and maxillomandibular advancement (MMA) on the upper airway space using three-dimensional images. An electronic search was performed in the PubMed, Cochrane Library, Scopus, Virtual Health Library, Web of Science, and OpenGrey databases (end date July 2016); a hand-search of primary study reference lists was also conducted. The inclusion criteria encompassed computed tomography evaluations of the upper airway spaces of adult patients undergoing orthognathic surgery with CCW rotation and MMA. The articles were evaluated for risk of bias with a tool for before-and-after studies. A meta-analysis was performed with the mean differences using a random-effects model. Heterogeneity was assessed with the Q-test and the I 2 index. The meta-analysis revealed significant (Pspaces. Copyright © 2017 International Association of Oral and Maxillofacial Surgeons. Published by Elsevier Ltd. All rights reserved.

  3. Detailed statistical analysis plan for the difficult airway management (DIFFICAIR) trial

    DEFF Research Database (Denmark)

    Nørskov, Anders Kehlet; Lundstrøm, Lars Hyldborg; Rosenstock, Charlotte Vallentin

    2014-01-01

    BACKGROUND: Preoperative airway assessment in Denmark is based on a non-specific clinical assessment left to the discretion of the responsible anesthesiologist. The DIFFICAIR trial compares the effect of using a systematic and consistent airway assessment versus a non-specific clinical assessment...

  4. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... Offer their tips for fitting ACTs into daily life Airway Clearance Techniques | Webcast To learn more about how you can help your infant or child manage their lung health, watch parents of children with CF and a respiratory therapist ...

  5. Maximum opening of the mouth by mouth prop during dental procedures increases the risk of upper airway constriction

    Directory of Open Access Journals (Sweden)

    Hiroshi Ito

    2010-05-01

    constriction. Practitioners should therefore consider applying not only systematic desensitization, but also general anesthesia to the patient who refuses treatment, because the safety of general anesthesia has advanced, and general anesthesia may be safer than the use of a prop and restraints.Keywords: mouth prop, dental procedure, upper airway constriction, asphyxia, maximum opening of the mouth, risk management

  6. Comparison of airway pressure release ventilation to conventional mechanical ventilation in the early management of smoke inhalation injury in swine.

    Science.gov (United States)

    Batchinsky, Andriy I; Burkett, Samuel E; Zanders, Thomas B; Chung, Kevin K; Regn, Dara D; Jordan, Bryan S; Necsoiu, Corina; Nguyen, Ruth; Hanson, Margaret A; Morris, Michael J; Cancio, Leopoldo C

    2011-10-01

    The role of airway pressure release ventilation in the management of early smoke inhalation injury has not been studied. We compared the effects of airway pressure release ventilation and conventional mechanical ventilation on oxygenation in a porcine model of acute respiratory distress syndrome induced by wood smoke inhalation. Prospective animal study. Government laboratory animal intensive care unit. Thirty-three Yorkshire pigs. Smoke inhalation injury. Anesthetized female Yorkshire pigs (n = 33) inhaled room-temperature pine-bark smoke. Before injury, the pigs were randomized to receive conventional mechanical ventilation (n = 15) or airway pressure release ventilation (n = 12) for 48 hrs after smoke inhalation. As acute respiratory distress syndrome developed (PaO2/Fio2 ratio conventional mechanical ventilation for 48 hrs and served as time controls. Changes in PaO2/Fio2 ratio, tidal volume, respiratory rate, mean airway pressure, plateau pressure, and hemodynamic variables were recorded. Survival was assessed using Kaplan-Meier analysis. PaO2/Fio2 ratio was lower in airway pressure release ventilation vs. conventional mechanical ventilation pigs at 12, 18, and 24 hrs (p conventional mechanical ventilation animals between 30 and 48 hrs post injury (p animals between 6 and 48 hrs (p conventional mechanical ventilation and airway pressure release ventilation pigs. In this model of acute respiratory distress syndrome caused by severe smoke inhalation in swine, airway pressure release ventilation-treated animals developed acute respiratory distress syndrome faster than conventional mechanical ventilation-treated animals, showing a lower PaO2/Fio2 ratio at 12, 18, and 24 hrs after injury. At other time points, PaO2/Fio2 ratio was not different between conventional mechanical ventilation and airway pressure release ventilation.

  7. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... how you can help your infant or child manage their lung health, watch parents of children with CF and a respiratory therapist talk about the different techniques they use for airway clearance. Facebook Twitter Email More Related Content Medications Autogenic Drainage ...

  8. Are new supraglottic airway devices, tracheal tubes and airway viewing devices cost-effective?

    Science.gov (United States)

    Slinn, Simon J; Froom, Stephen R; Stacey, Mark R W; Gildersleve, Christopher D

    2015-01-01

    Over the past two decades, a plethora of new airway devices has become available to the pediatric anesthetist. While all have the laudable intention of improving patient care and some have proven clinical benefits, these devices are often costly and at times claims of an advantage over current equipment and techniques are marginal. Supraglottic airway devices are used in the majority of pediatric anesthetics delivered in the U.K., and airway-viewing devices provide an alternative for routine intubation as well as an option in the management of the difficult airway. Yet hidden beneath the convenience of the former and the technology of the latter, the impact on basic airway skills with a facemask and the lack of opportunities to fine-tune the core skill of intubation represent an unrecognised and unquantifiable cost. A judgement on this value must be factored into the absolute purchase cost and any potential benefits to the quality of patient care, thus blurring any judgement on cost-effectiveness that we might have. An overall value on cost-effectiveness though not in strict monetary terms can then be ascribed. In this review, we evaluate the role of these devices in the care of the pediatric patient and attempt to balance the advantages they offer against the cost they incur, both financial and environmental, and in any quality improvement they might offer in clinical care. © 2014 John Wiley & Sons Ltd.

  9. Safety and Efficacy of Thoracic External Beam Radiotherapy After Airway Stenting in Malignant Airway Obstruction

    Energy Technology Data Exchange (ETDEWEB)

    Rochet, Nathalie, E-mail: nrochet@partners.org [Department of Radiation Oncology, University of Heidelberg, Heidelberg (Germany); Hauswald, Henrik; Schmaus, Martina; Hensley, Frank [Department of Radiation Oncology, University of Heidelberg, Heidelberg (Germany); Huber, Peter [Department of Radiotherapy, German Cancer Research Center, Heidelberg (Germany); Eberhardt, Ralf; Herth, Felix J. [Department of Pulmonology and Respiratory Care Medicine, Thoraxklinik at University of Heidelberg, Heidelberg (Germany); Debus, Juergen; Neuhof, Dirk [Department of Radiation Oncology, University of Heidelberg, Heidelberg (Germany)

    2012-05-01

    Purpose: We retrospectively evaluated the outcome and toxicity of external beam radiotherapy (EBRT) after airway stents were placed in patients treated for malignant airway obstruction. Methods and Materials: Between 2004 and 2009, we performed airway stenting followed by EBRT in 43 patients for symptomatic primary lung cancer (n = 31) or other thoracic malignancies (n = 12). The median time interval between stent placement and first irradiation was 14 days. A median total dose of 50 Gy was delivered. Sixty-seven percent of the patients had reduced performance status (Karnofsky performance score, {<=}70). Results: EBRT had to be stopped prematurely in 16 patients (37%), at a median total dose of 17 Gy, for various reasons. In this group of patients, the survival was poor, with a median overall survival (OS) of only 21 days. Twenty-seven patients (63%) completed radiotherapy as planned, with a median OS of 8.4 months. Fourteen of 43 patients (33%) developed at least one Common Terminology Criteria for Adverse Event of grade 3 to 5. The most common event was a malignant restenosis of the stent leading to asphyxia (n = 7), followed by fistula formation (n = 4), necrosis (n = 3), mediastinitis with abscess (n = 1), secondary nonmalignant airway stenosis (n = 1), and hemoptysis (n = 1). With the exception of one event, all events were associated with a local progression of the tumor. Conclusions: Although the long-term prognosis for patients with malignant airway obstruction is poor, airway stenting combined with EBRT offers a possible therapeutic option, achieving fast relief of acute respiratory distress with an associated antitumor effect, resulting in a potential survival benefit. However, due to local advanced tumor growth, increased rates of adverse events are to be expected, necessitating careful monitoring.

  10. Safety and Efficacy of Thoracic External Beam Radiotherapy After Airway Stenting in Malignant Airway Obstruction

    International Nuclear Information System (INIS)

    Rochet, Nathalie; Hauswald, Henrik; Schmaus, Martina; Hensley, Frank; Huber, Peter; Eberhardt, Ralf; Herth, Felix J.; Debus, Juergen; Neuhof, Dirk

    2012-01-01

    Purpose: We retrospectively evaluated the outcome and toxicity of external beam radiotherapy (EBRT) after airway stents were placed in patients treated for malignant airway obstruction. Methods and Materials: Between 2004 and 2009, we performed airway stenting followed by EBRT in 43 patients for symptomatic primary lung cancer (n = 31) or other thoracic malignancies (n = 12). The median time interval between stent placement and first irradiation was 14 days. A median total dose of 50 Gy was delivered. Sixty-seven percent of the patients had reduced performance status (Karnofsky performance score, ≤70). Results: EBRT had to be stopped prematurely in 16 patients (37%), at a median total dose of 17 Gy, for various reasons. In this group of patients, the survival was poor, with a median overall survival (OS) of only 21 days. Twenty-seven patients (63%) completed radiotherapy as planned, with a median OS of 8.4 months. Fourteen of 43 patients (33%) developed at least one Common Terminology Criteria for Adverse Event of grade 3 to 5. The most common event was a malignant restenosis of the stent leading to asphyxia (n = 7), followed by fistula formation (n = 4), necrosis (n = 3), mediastinitis with abscess (n = 1), secondary nonmalignant airway stenosis (n = 1), and hemoptysis (n = 1). With the exception of one event, all events were associated with a local progression of the tumor. Conclusions: Although the long-term prognosis for patients with malignant airway obstruction is poor, airway stenting combined with EBRT offers a possible therapeutic option, achieving fast relief of acute respiratory distress with an associated antitumor effect, resulting in a potential survival benefit. However, due to local advanced tumor growth, increased rates of adverse events are to be expected, necessitating careful monitoring.

  11. Recent BWR fuel management reactor physics advances

    International Nuclear Information System (INIS)

    Crowther, R.L.; Congdon, S.P.; Crawford, B.W.; Kang, C.M.; Martin, C.L.; Reese, A.P.; Savoia, P.J.; Specker, S.R.; Welchly, R.

    1982-01-01

    Improvements in BWR fuel management have been under development to reduce uranium and separative work (SWU) requirements and reduce fuel cycle costs, while also maintaining maximal capacity factors and high fuel reliability. Improved reactor physics methods are playing an increasingly important role in making such advances feasible. The improved design, process computer and analysis methods both increase knowledge of the thermal margins which are available to implement fuel management advance, and improve the capability to reliably and efficiently analyze and design for fuel management advances. Gamma scan measurements of the power distributions of advanced fuel assembly and advanced reactor core designs, and improved in-core instruments also are important contributors to improving 3-d predictive methods and to increasing thermal margins. This paper is an overview of the recent advances in BWR reactor physics fuel management methods, coupled with fuel management and core design advances. The reactor physics measurements which are required to confirm the predictions of performance fo fuel management advances also are summarized

  12. Management of tracheal chondrosarcoma almost completely obstructing the airway: a case report.

    Science.gov (United States)

    Andolfi, Marco; Vaccarili, Maurizio; Crisci, Roberto; Puma, Francesco

    2016-07-11

    Primary malignant tracheal tumors account for only 0.2 % of all malignancies of the respiratory tract. Tracheal chondrosarcoma is a rare condition and only 17 cases have been described in the literature from 1965 to date. Herein we report the very unusual case of a patient with a tracheal chondrosarcoma, electively treated by curative surgery despite the virtually complete obstruction of the airway. We present the case of a 79-year old Caucasian man with long-lasting wheezing misdiagnosed as asthma and affected by a tracheal chondrosarcoma almost completely obstructing the airway. Videobronchoscopy and imaging investigations revealed a well-circumscribed mass arising from the cartilaginous rings of the cervical trachea with a posterior residual respiratory space of about 1 mm. Because of the mobility and flaccidity of the uninvolved pars membranacea, the tiny respiratory space slightly expanded during inspiration and expiration allowing the patient to be treated without an essential emergency procedure. Standard tracheal intubation was impossible. Rigid bronchoscopy enabled placement of a small tracheal tube distally to the tumor. Successful cervical tracheal resection and reconstruction was then performed, achieving complete tumor excision. Histologically, the mass was characterized as a low-grade tracheal chondrosarcoma. Videobronchoscopy performed 9 months after surgery showed a wide, well healed tracheal anastomosis. Ten months after surgery, the patient is alive and disease free. Complete surgical resection is the treatment of choice for tracheal chondrosarcoma. Rigid bronchoscopy is an essential tool for diagnostic and therapeutic purposes. It allows the palliative maneuvers for obstruction relief but also, in resectable patients, the intraoperative safe and straightforward management of the obstructed airway.

  13. Airway management in Escobar syndrome: A formidable challenge

    Directory of Open Access Journals (Sweden)

    Shaji Mathew

    2013-01-01

    Full Text Available Escobar syndrome is a rare autosomal recessive disorder characterized by flexion joint and digit contractures, skin webbing, cleft palate, deformity of spine and cervical spine fusion. Associated difficult airway is mainly due to micrognathia, retrognathia, webbing of neck and limitation of the mouth opening and neck extension. We report a case of a 1 year old child with Escobar syndrome posted for bilateral hamstrings to quadriceps transfer. The child had adequate mouth opening with no evidence of cervical spine fusion, yet we faced difficulty in intubation which was ultimately overcome by securing a proseal laryngeal mask airway (PLMA and then by intubating with an endotracheal tube railroaded over a paediatric fibreoptic bronchoscope passed through the lumen of a PLMA.

  14. Airway distensibility in Chronic Obstructive Airway Disease

    DEFF Research Database (Denmark)

    Winkler Wille, Mathilde Marie; Pedersen, Jesper Holst; Dirksen, Asger

    2013-01-01

    Rationale – Chronic Obstructive Pulmonary Disease (COPD) is a combination of chronic bronchitis and emphysema, which both may lead to airway obstruction. Under normal circumstances, airway dimensions vary as a function of inspiration level. We aim to study the influence of COPD and emphysema......-20% (mild), 20%-30% (moderate) or >30% (severe). Spirometry was performed annually and participants were divided into severity groups according to the Global Initiative for Chronic Obstructive Lung Disease (GOLD). Data were analysed in a mixed effects regression model with log(airway lumen diameter...... and emphysema, respectively. Conclusions – Airway distensibility decreases significantly with increasing severity of both GOLD status and emphysema, indicating that in COPD the dynamic change in airway calibre during respiration is compromised. Chronic bronchitis and emphysema appear to be interacting...

  15. Advanced dementia pain management protocols.

    Science.gov (United States)

    Montoro-Lorite, Mercedes; Canalias-Reverter, Montserrat

    Pain management in advanced dementia is complex because of neurological deficits present in these patients, and nurses are directly responsible for providing interventions for the evaluation, management and relief of pain for people suffering from this health problem. In order to facilitate and help decision-makers, pain experts recommend the use of standardized protocols to guide pain management, but in Spain, comprehensive pain management protocols have not yet been developed for advanced dementia. This article reflects the need for an integrated management of pain in advanced dementia. From the review and analysis of the most current and relevant studies in the literature, we performed an approximation of the scales for the determination of pain in these patients, with the observational scale PAINAD being the most recommended for the hospital setting. In addition, we provide an overview for comprehensive management of pain in advanced dementia through the conceptual framework «a hierarchy of pain assessment techniques by McCaffery and Pasero» for the development and implementation of standardized protocols, including a four-phase cyclical process (evaluation, planning/performance, revaluation and recording), which can facilitate the correct management of pain in these patients. Copyright © 2017 Elsevier España, S.L.U. All rights reserved.

  16. Integrated care pathways for airway diseases (AIRWAYS-ICPs)

    NARCIS (Netherlands)

    Bousquet, J.; Addis, A.; Adcock, I.; Agache, I.; Agusti, A.; Alonso, A.; Annesi-Maesano, I.; Anto, J. M.; Bachert, C.; Baena-Cagnani, C. E.; Bai, C.; Baigenzhin, A.; Barbara, C.; Barnes, P. J.; Bateman, E. D.; Beck, L.; Bedbrook, A.; Bel, E. H.; Benezet, O.; Bennoor, K. S.; Benson, M.; Bernabeu-Wittel, M.; Bewick, M.; Bindslev-Jensen, C.; Blain, H.; Blasi, F.; Bonini, M.; Bonini, S.; Boulet, L. P.; Bourdin, A.; Bourret, R.; Bousquet, P. J.; Brightling, C. E.; Briggs, A.; Brozek, J.; Buhl, R.; Bush, A.; Caimmi, D.; Calderon, M.; Calverley, P.; Camargos, P. A.; Camuzat, T.; Canonica, G. W.; Carlsen, K. H.; Casale, T. B.; Cazzola, M.; Cepeda Sarabia, A. M.; Cesario, A.; Chen, Y. Z.; Chkhartishvili, E.; Chavannes, N. H.; Chiron, R.; Chuchalin, A.; Chung, K. F.; Cox, L.; Crooks, G.; Crooks, M. G.; Cruz, A. A.; Custovic, A.; Dahl, R.; Dahlen, S. E.; de Blay, F.; Dedeu, T.; Deleanu, D.; Demoly, P.; Devillier, P.; Didier, A.; Dinh-Xuan, A. T.; Djukanovic, R.; Dokic, D.; Douagui, H.; Dubakiene, R.; Eglin, S.; Elliot, F.; Emuzyte, R.; Fabbri, L.; Fink Wagner, A.; Fletcher, M.; Fokkens, W. J.; Fonseca, J.; Franco, A.; Frith, P.; Furber, A.; Gaga, M.; Garcés, J.; Garcia-Aymerich, J.; Gamkrelidze, A.; Gonzales-Diaz, S.; Gouzi, F.; Guzmán, M. A.; Haahtela, T.; Harrison, D.; Hayot, M.; Heaney, L. G.; Heinrich, J.; Hellings, P. W.; Hooper, J.; Humbert, M.; Hyland, M.; Iaccarino, G.; Jakovenko, D.; Jardim, J. R.; Jeandel, C.; Jenkins, C.; Johnston, S. L.; Jonquet, O.; Joos, G.; Jung, K. S.; Kalayci, O.; Karunanithi, S.; Keil, T.; Khaltaev, N.; Kolek, V.; Kowalski, M. L.; Kull, I.; Kuna, P.; Kvedariene, V.; Le, L. T.; Lodrup Carlsen, K. C.; Louis, R.; MacNee, W.; Mair, A.; Majer, I.; Manning, P.; de Manuel Keenoy, E.; Masjedi, M. R.; Melen, E.; Melo-Gomes, E.; Menzies-Gow, A.; Mercier, G.; Mercier, J.; Michel, J. P.; Miculinic, N.; Mihaltan, F.; Milenkovic, B.; Molimard, M.; Momas, I.; Montilla-Santana, A.; Morais-Almeida, M.; Morgan, M.; N'Diaye, M.; Nafti, S.; Nekam, K.; Neou, A.; Nicod, L.; O'Hehir, R.; Ohta, K.; Paggiaro, P.; Palkonen, S.; Palmer, S.; Papadopoulos, N. G.; Papi, A.; Passalacqua, G.; Pavord, I.; Pigearias, B.; Plavec, D.; Postma, D. S.; Price, D.; Rabe, K. F.; Radier Pontal, F.; Redon, J.; Rennard, S.; Roberts, J.; Robine, J. M.; Roca, J.; Roche, N.; Rodenas, F.; Roggeri, A.; Rolland, C.; Rosado-Pinto, J.; Ryan, D.; Samolinski, B.; Sanchez-Borges, M.; Schünemann, H. J.; Sheikh, A.; Shields, M.; Siafakas, N.; Sibille, Y.; Similowski, T.; Small, I.; Sola-Morales, O.; Sooronbaev, T.; Stelmach, R.; Sterk, P. J.; Stiris, T.; Sud, P.; Tellier, V.; To, T.; Todo-Bom, A.; Triggiani, M.; Valenta, R.; Valero, A. L.; Valiulis, A.; Valovirta, E.; van Ganse, E.; Vandenplas, O.; Vasankari, T.; Vestbo, J.; Vezzani, G.; Viegi, G.; Visier, L.; Vogelmeier, C.; Vontetsianos, T.; Wagstaff, R.; Wahn, U.; Wallaert, B.; Whalley, B.; Wickman, M.; Williams, D. M.; Wilson, N.; Yawn, B. P.; Yiallouros, P. K.; Yorgancioglu, A.; Yusuf, O. M.; Zar, H. J.; Zhong, N.; Zidarn, M.; Zuberbier, T.

    2014-01-01

    The objective of Integrated Care Pathways for Airway Diseases (AIRWAYS-ICPs) is to launch a collaboration to develop multi-sectoral care pathways for chronic respiratory diseases in European countries and regions. AIRWAYS-ICPs has strategic relevance to the European Union Health Strategy and will

  17. Integrated care pathways for airway diseases (AIRWAYS-ICPs)

    NARCIS (Netherlands)

    Bousquet, J.; Addis, A.; Adcock, I.; Agache, I.; Agusti, A.; Alonso, A.; Annesi-Maesano, I.; Anto, J. M.; Bachert, C.; Baena-Cagnani, C. E.; Bai, C.; Baigenzhin, A.; Barbara, C.; Barnes, P. J.; Bateman, E. D.; Beck, L.; Bedbrook, A.; Bel, E. H.; Benezet, O.; Bennoor, K. S.; Benson, M.; Bernabeu-Wittel, M.; Bewick, M.; Bindslev-Jensen, C.; Blain, H.; Blasi, F.; Bonini, M.; Bonini, S.; Boulet, L. P.; Bourdin, A.; Bourret, R.; Bousquet, P. J.; Brightling, C. E.; Briggs, A.; Brozek, J.; Buh, R.; Bush, A.; Caimmi, D.; Calderon, M.; Calverley, P.; Camargos, P. A.; Camuzat, T.; Canonica, G. W.; Carlsen, K. H.; Casale, T. B.; Cazzola, M.; Sarabia, A. M. Cepeda; Cesario, A.; Chen, Y. Z.; Chkhartishvili, E.; Chavannes, N. H.; Chiron, R.; Chuchalin, A.; Chung, K. F.; Cox, L.; Crooks, G.; Crooks, M. G.; Cruz, A. A.; Custovic, A.; Dahl, R.; Dahlen, S. E.; De Blay, F.; Dedeu, T.; Deleanu, D.; Demoly, P.; Devillier, P.; Didier, A.; Dinh-Xuan, A. T.; Djukanovic, R.; Dokic, D.; Douagui, H.; Dubakiene, R.; Eglin, S.; Elliot, F.; Emuzyte, R.; Fabbri, L.; Wagner, A. Fink; Fletcher, M.; Fokkens, W. J.; Fonseca, J.; Franco, A.; Frith, P.; Furber, A.; Gaga, M.; Garces, J.; Garcia-Aymerich, J.; Gamkrelidze, A.; Gonzales-Diaz, S.; Gouzi, F.; Guzman, M. A.; Haahtela, T.; Harrison, D.; Hayot, M.; Heaney, L. G.; Heinrich, J.; Hellings, P. W.; Hooper, J.; Humbert, M.; Hyland, M.; Iaccarino, G.; Jakovenko, D.; Jardim, J. R.; Jeandel, C.; Jenkins, C.; Johnston, S. L.; Jonquet, O.; Joos, G.; Jung, K. S.; Kalayci, O.; Karunanithi, S.; Keil, T.; Khaltaev, N.; Kolek, V.; Kowalski, M. L.; Kull, I.; Kuna, P.; Kvedariene, V.; Le, L. T.; Carlsen, K. C. Lodrup; Louis, R.; MacNee, W.; Mair, A.; Majer, I.; Manning, P.; Keenoy, E. de Manuel; Masjedi, M. R.; Meten, E.; Melo-Gomes, E.; Menzies-Gow, A.; Mercier, G.; Mercier, J.; Michel, J. P.; Miculinic, N.; Mihaltan, F.; Milenkovic, B.; Molimard, M.; Mamas, I.; Montilla-Santana, A.; Morais-Almeida, M.; Morgan, M.; N'Diaye, M.; Nafti, S.; Nekam, K.; Neou, A.; Nicod, L.; O'Hehir, R.; Ohta, K.; Paggiaro, P.; Palkonen, S.; Palmer, S.; Papadopoulos, N. G.; Papi, A.; Passalacqua, G.; Pavord, I.; Pigearias, B.; Plavec, D.; Postma, D. S.; Price, D.; Rabe, K. F.; Pontal, F. Radier; Redon, J.; Rennard, S.; Roberts, J.; Robine, J. M.; Roca, J.; Roche, N.; Rodenas, F.; Roggeri, A.; Rolland, C.; Rosado-Pinto, J.; Ryan, D.; Samolinski, B.; Sanchez-Borges, M.; Schunemann, H. J.; Sheikh, A.; Shields, M.; Siafakas, N.; Sibille, Y.; Similowski, T.; Small, I.; Sola-Morales, O.; Sooronbaev, T.; Stelmach, R.; Sterk, P. J.; Stiris, T.; Sud, P.; Tellier, V.; To, T.; Todo-Bom, A.; Triggiani, M.; Valenta, R.; Valero, A. L.; Valiulis, A.; Valovirta, E.; Van Ganse, E.; Vandenplas, O.; Vasankari, T.; Vestbo, J.; Vezzani, G.; Viegi, G.; Visier, L.; Vogelmeier, C.; Vontetsianos, T.; Wagstaff, R.; Wahn, U.; Wallaert, B.; Whalley, B.; Wickman, M.; Williams, D. M.; Wilson, N.; Yawn, B. P.; Yiallouros, P. K.; Yorgancioglu, A.; Yusuf, O. M.; Zar, H. J.; Zhong, N.; Zidarn, M.; Zuberbier, T.

    The objective of Integrated Care Pathways for Airway Diseases (AIRWAYS-ICPs) is to launch a collaboration to develop multi-sectoral care pathways for chronic respiratory diseases in European countries and regions. AIRWAYS-ICPs has strategic relevance to the European Union Health Strategy and will

  18. The contribution of airway smooth muscle to airway narrowing and airway hyperresponsiveness in disease.

    Science.gov (United States)

    Martin, J G; Duguet, A; Eidelman, D H

    2000-08-01

    Airway hyperresponsiveness (AHR), the exaggerated response to constrictor agonists in asthmatic subjects, is incompletely understood. Changes in either the quantity or properties of airway smooth muscle (ASM) are possible explanations for AHR. Morphometric analyses demonstrate structural changes in asthmatic airways, including subepithelial fibrosis, gland hyperplasia/hypertrophy, neovascularization and an increase in ASM mass. Mathematical modelling of airway narrowing suggests that, of all the changes in structure, the increase in ASM mass is the most probable cause of AHR. An increase in ASM mass in the large airways is more closely associated with a greater likelihood of dying from asthma than increases in ASM mass in other locations within the airway tree. ASM contraction is opposed by the elastic recoil of the lungs and airways, which appears to limit the degree of bronchoconstriction in vivo. The cyclical nature of tidal breathing applies stresses to the airway wall that enhance the bronchodilating influence of the lung tissues on the contracting ASM, in all probability by disrupting cross-bridges. However, the increase in ASM mass in asthma may overcome the limitation resulting from the impedances to ASM shortening imposed by the lung parenchyma and airway wall tissues. Additionally, ASM with the capacity to shorten rapidly may achieve shorter lengths and cause a greater degree of bronchoconstriction when stimulated to contract than slower ASM. Changes in ASM properties are induced by the process of sensitization and allergen-exposure such as enhancement of phospholipase C activity and inositol phosphate turnover, and increases in myosin light chain kinase activity. Whether changes in ASM mass or biochemical/biomechanical properties form the basis for asthma remains to be determined.

  19. Prevalence of Visible and Occult Blood on Airway Management Equipment Used Outside the Operating Room

    Science.gov (United States)

    1999-10-01

    instruments that make direct contact with mucus membranes such as laryngoscopy handles and blades, Magill forceps and stylets, and fiberoptic laryngoscopy...saliva in dental procedures, human breast milk , any body fluid that is visibly contaminated with blood, and all body fluids in situations where it is...noted on mucus membranes and airway management equipment reinforces the fact that all anesthesia providers are at risk for acquiring or transmitting

  20. Advantages, Disadvantages, Indications, Contraindications and Surgical Technique of Laryngeal Airway Mask.

    Science.gov (United States)

    Jannu, Anubhav; Shekar, Ashim; Balakrishna, Ramdas; Sudarshan, H; Veena, G C; Bhuvaneshwari, S

    2017-12-01

    The beauty of the laryngeal mask is that it forms an air tight seal enclosing the larynx rather than plugging the pharynx, and avoid airway obstruction in the oropharynx. The goal of its development was to create an intermediate form of airway management face mask and endotracheal tube. Indication for its use includes any procedure that would normally involve the use of a face mask. The laryngeal mask airway was designed as a new concept in airway management and has been gaining a firm position in anesthetic practice. Despite wide spread use the definitive role of the laryngeal mask airway is yet to be established. In some situations, such as after failed tracheal intubation or in oral surgery its use is controversial. There are several unresolved issues, for example the effect of the laryngeal mask on regurgitation and whether or not cricoids pressure prevents placement of mask. We review the techniques of insertion, details of misplacement, and complications associated with use of the laryngeal mask. We then attempt to clarify the role of laryngeal mask in air way management during anesthesia, discussing the advantages and disadvantages as well as indications and contraindications of its use in oral and maxillofacial surgery.

  1. Innovative Application of a Microlaryngeal Surgery Tube for difficult Airway Management in a Case of Down's Syndrome.

    Science.gov (United States)

    Gulabani, Michell; Gupta, Akhilesh; Bannerjee, Neerja Gaur; Sood, Rajesh; Dass, Prashant

    2016-04-01

    An 11-year-old male child, known case of down's syndrome with congenital oesophageal stricture was posted for oesophageal dilatation. Preoperative airway assessment revealed a high arched palate, receding mandible and Mallampati Score of 2. During surgery, after loss of consciousness which was described as loss of eyelash reflex and adequate jaw relaxation, direct laryngoscopy and endotracheal intubation was attempted with a cuffed endotracheal tube number 5.0mm ID (internal diameter). The endotracheal tube could not be negotiated smoothly, so 5.0mm ID uncuffed endotracheal tube was used which passed through easily, but on auscultation revealed a significant leak. Later, intubation via a Micro Laryngeal Surgery (MLS) cuffed tube 4.0mm ID was attempted. The MLS tube advanced smoothly and there was no associated leak on positive pressure ventilation. Thus by innovative thinking and avant-garde reasoning, a definitive airway device could be positioned with no other suitable alternative at hand.

  2. Trefoil factor-2 reverses airway remodeling changes in allergic airways disease.

    Science.gov (United States)

    Royce, Simon G; Lim, Clarice; Muljadi, Ruth C; Samuel, Chrishan S; Ververis, Katherine; Karagiannis, Tom C; Giraud, Andrew S; Tang, Mimi L K

    2013-01-01

    Trefoil factor 2 (TFF2) is a small peptide with an important role in mucosal repair. TFF2 is up-regulated in asthma, suggesting a role in asthma pathogenesis. Given its known biological role in promoting epithelial repair, TFF2 might be expected to exert a protective function in limiting the progression of airway remodeling in asthma. The contribution of TFF2 to airway remodeling in asthma was investigated by examining the expression of TFF2 in the airway and lung, and evaluating the effects of recombinant TFF2 treatment on established airway remodeling in a murine model of chronic allergic airways disease (AAD). BALB/c mice were sensitized and challenged with ovalbumin (OVA) or saline for 9 weeks, whereas mice with established OVA-induced AAD were treated with TFF2 or vehicle control (intranasally for 14 d). Effects on airway remodeling, airway inflammation, and airway hyperresponsiveness were then assessed, whereas TFF2 expression was determined by immunohistochemistry. TFF2 expression was significantly increased in the airways of mice with AAD, compared with expression levels in control mice. TFF2 treatment resulted in reduced epithelial thickening, subepithelial collagen deposition, goblet-cell metaplasia, bronchial epithelium apoptosis, and airway hyperresponsiveness (all P < 0.05, versus vehicle control), but TFF2 treatment did not influence airway inflammation. The increased expression of endogenous TFF2 in response to chronic allergic inflammation is insufficient to prevent the progression of airway inflammation and remodeling in a murine model of chronic AAD. However, exogenous TFF2 treatment is effective in reversing aspects of established airway remodeling. TFF2 has potential as a novel treatment for airway remodeling in asthma.

  3. Association and management of eosinophilic inflammation in upper and lower airways

    Directory of Open Access Journals (Sweden)

    Mitsuhiro Okano

    2015-04-01

    Full Text Available This review discussed the contribution of eosinophilic upper airway inflammation includes allergic rhinitis (AR and chronic rhinosinusitis (CRS to the pathophysiology and course of asthma, the representative counterpart in the lower airway. The presence of concomitant AR can affect the severity of asthma in patients who have both diseases; however, it is still debatable whether the presence of asthma affects the severity of AR. Hypersensitivity, obstruction and/or inflammation in the lower airway can be detected in patients with AR without awareness or diagnosis of asthma, and AR is known as a risk factor for the new onset of wheeze and asthma both in children and adults. Allergen immunotherapy, pharmacotherapy and surgery for AR can contribute to asthma control; however, a clear preventive effect on the new onset of asthma has been demonstrated only for immunotherapy. Pathological similarities such as epithelial shedding are also seen between asthma and CRS, especially eosinophilic CRS. Abnormal sinus findings on computed tomography are seen in the majority of asthmatic patients, and asthmatic patients with CRS show a significant impairment in Quality of Life (QOL and pulmonary function as compared to those without CRS. Conversely, lower airway inflammation and dysfunction are seen in non-asthmatic patients with CRS. Treatments for CRS that include pharmacotherapy such as anti-leukotrienes, surgery, and aspirin desensitization show a beneficial effect on concomitant asthma. Acting as a gatekeeper of the united airways, the control of inflammation in the nose is crucial for improvement of the QOL of patients with co-existing AR/CRS and asthma.

  4. Comparison of the air-Q intubating laryngeal airway and the cobra perilaryngeal airway as conduits for fiber optic-guided intubation in pediatric patients.

    Science.gov (United States)

    Girgis, Karim K; Youssef, Maha M I; ElZayyat, Nashwa S

    2014-10-01

    One of the methods proposed in cases of difficult airway management in children is using a supraglottic airway device as a conduit for tracheal intubation. The aim of this study was to compare the efficacy of the Air-Q Intubating Laryngeal Airway (Air-Q) and the Cobra Perilaryngeal Airway (CobraPLA) to function as a conduit for fiber optic-guided tracheal intubation in pediatric patients. A total of 60 children with ages ranging from 1 to 6 years, undergoing elective surgery, were randomized to have their airway managed with either an Air-Q or CobraPLA. Outcomes recorded were the success rate, time and number of attempts required for fiber optic-guided intubation and the time required for device removal after intubation. We also recorded airway leak pressure (ALP), fiber optic grade of glottic view and occurrence of complications. Both devices were successfully inserted in all patients. The intubation success rate was comparable with the Air-Q and the CobraPLA (96.7% vs. 90%), as was the first attempt success rate (90% vs. 80%). The intubation time was significantly longer with the CobraPLA (29.5 ± 10.9 s vs. 23.2 ± 9.8 s; P fiber optic grade of glottic view was comparable with the two devices. The CobraPLA was associated with a significantly higher incidence of blood staining of the device on removal and post-operative sore throat. Both the Air-Q and CobraPLA can be used effectively as a conduit for fiber optic-guided tracheal intubation in children. However, the Air-Q proved to be superior due to a shorter intubation time and less airway morbidity compared with the CobraPLA.

  5. Computational models of airway branching morphogenesis.

    Science.gov (United States)

    Varner, Victor D; Nelson, Celeste M

    2017-07-01

    The bronchial network of the mammalian lung consists of millions of dichotomous branches arranged in a highly complex, space-filling tree. Recent computational models of branching morphogenesis in the lung have helped uncover the biological mechanisms that construct this ramified architecture. In this review, we focus on three different theoretical approaches - geometric modeling, reaction-diffusion modeling, and continuum mechanical modeling - and discuss how, taken together, these models have identified the geometric principles necessary to build an efficient bronchial network, as well as the patterning mechanisms that specify airway geometry in the developing embryo. We emphasize models that are integrated with biological experiments and suggest how recent progress in computational modeling has advanced our understanding of airway branching morphogenesis. Copyright © 2016 Elsevier Ltd. All rights reserved.

  6. Perioperative adverse airway events in cleft lip and palate repair ...

    African Journals Online (AJOL)

    Background: Airway-related problems account for the majority of anaesthetic morbidity in paediatric anaesthesia, but more so for cleft lip and palate repair. The aim of this study was to assess the frequency, pattern, management and outcome of adverse airway events during the perioperative period in cleft lip and palate ...

  7. allergy, asthma airway and anaphylaxis

    African Journals Online (AJOL)

    The perioperative preparation of children presenting for surgery aims to identify medical problems that might influence the outcome and to institute management strategies to reduce those risks. Respiratory and airway complications remain the most significant cause of morbidity and mortality in modern paediatric ...

  8. Retrospective Review of the Anaesthetic Management of Maxillectomies and Mandibulectomies for Benign Tumours in Sub-Saharan Africa.

    Directory of Open Access Journals (Sweden)

    Michelle C White

    Full Text Available Safe anaesthesia is a crucial component of safe surgical care, yet anaesthetic complications are common in resource-limited settings. We describe differences in anaesthetic needs for Mandibulectomy vs. Maxillectomy in three sub-Saharan African countries.Retrospective review of patients undergoing minor Mandibulectomy, major Mandibulectomy, or Maxillectomy in Togo, Guinea and Republic of the Congo. Surgeries were performed on the Africa Mercy, an international non-governmental hospital ship. Primary outcomes were need for advanced airway management and intra-operative blood loss. Secondary outcomes were time under general anaesthesia and hospital length of stay. Multivariate regression determined the association between operation type and each outcome measure.105 patients were included (25 minor Mandibulectomy, 58 major Mandibulectomy, 22 Maxillectomy procedures. In-hospital mortality was 0%. 44/105 (41.9% required an advanced airway management technique to achieve intubation, although in all cases this was anticipated prior to the procedure; no differences were noted between surgical procedure (p = 0.72. Operative procedure was a significant risk factor for intra-operative blood loss. Patients undergoing Maxillectomy lost on average 851.5 (413.3, 1289.8, p = 0.0003 mL more blood than patients undergoing minor Mandibulectomy, and 507.3 (150.3, 864.3, p = 0.007 mL more blood than patients undergoing major Mandibulectomy. Patients undergoing Maxillectomy had a significantly higher time under general anaesthesia than those undergoing minor Mandibulectomy. There was no significant difference in hospital length of stay between operation type.Anaesthetic considerations for minor Mandibulectomy, major Mandibulectomy, and Maxillectomy differ with respect to intra-operative blood loss and time under general anaesthesia, but not need for advanced airway management or length of stay. Although advanced airway management was required in 41.9% of patients

  9. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... NACFC Carolyn and C Richard Mattingly Leadership in Mental Health Care Award Mary M. Kontos Award NACFC Reflections ... help your infant or child manage their lung health, watch parents of children with CF and a respiratory therapist talk about the different techniques they use for airway clearance. ... Instagram Email Find a Clinical Trial Help us blaze ...

  10. Epiglottic abscess causing acute airway obstruction in an adult

    International Nuclear Information System (INIS)

    Vasileiadis, I.; Kapetanakis, S.; Vasileiadis, D.; Petousis, A.

    2013-01-01

    Acute epiglottitis is an acute inflammation in the supraglottic region of the oropharynx which is a potentially life-threatening condition leading to rapid upper airway obstruction. An infrequent sequel of acute epiglottitis is the epiglottic abscess. Less than 50 cases have been reported in the international literature and even less are the cases that acute surgical intervention was necessary to secure the airway. We report a young man with sudden onset of odynophagia, dysphonia and dyspnea and rapidly progression of upper airway obstruction. Clinical examination with fiberoptic nasopharyngolaryngoscope in emergency department demonstrated an epiglottic abscess. An urgent tracheostomy was performed in order to secure patient's airway and afterward, the patient underwent direct laryngoscopy and drainage of abscess and intravenous antibiotics were administrated. The diagnosis of epiglottic abscess should be considered in adult patients with odynophagia and dysphonia. Principles of treatment include aggressive airway management, surgical drainage of abscess and intravenous antibiotics. (author)

  11. [Prehospital airway management of laryngeal tubes. Should the laryngeal tube S with gastric drain tube be preferred in emergency medicine?].

    Science.gov (United States)

    Dengler, V; Wilde, P; Byhahn, C; Mack, M G; Schalk, R

    2011-02-01

    Laryngeal tubes (LT) are increasingly being used for emergency airway management. This article reports on two patients in whom out-of-hospital intubation with a single-lumen LT was associated with massive pulmonary aspiration in one patient and gastric overinflation in the other. In both cases peak inspiratory pressures exceeded the LT leak pressure of approximately 35 mbar. This resulted in gastric inflation and decreased pulmonary compliance and increased inspiratory pressure further, thereby creating a vicious circle. It is therefore recommended that laryngeal tube suction (LTS) should be used in all cases of emergency airway management and a gastric drain tube be inserted through the dedicated second lumen. Apart from gastric overinflation, incorrect LT/LTS placement must be detected and immediately corrected, e.g. in cases of difficult or impossible gastric tube placement, permanent drainage of air from the gastric tube, decreasing minute ventilation or an ascending capnography curve.

  12. Biomarkers in Airway Diseases

    Directory of Open Access Journals (Sweden)

    Janice M Leung

    2013-01-01

    Full Text Available The inherent limitations of spirometry and clinical history have prompted clinicians and scientists to search for surrogate markers of airway diseases. Although few biomarkers have been widely accepted into the clinical armamentarium, the authors explore three sources of biomarkers that have shown promise as indicators of disease severity and treatment response. In asthma, exhaled nitric oxide measurements can predict steroid responsiveness and sputum eosinophil counts have been used to titrate anti-inflammatory therapies. In chronic obstructive pulmonary disease, inflammatory plasma biomarkers, such as fibrinogen, club cell secretory protein-16 and surfactant protein D, can denote greater severity and predict the risk of exacerbations. While the multitude of disease phenotypes in respiratory medicine make biomarker development especially challenging, these three may soon play key roles in the diagnosis and management of airway diseases.

  13. [Algorithm for securing an unexpected difficult airway : User analysis on a simulator].

    Science.gov (United States)

    Ott, T; Truschinski, K; Kriege, M; Naß, M; Herrmann, S; Ott, V; Sellin, S

    2018-01-01

    Critical incidents in difficult airway management are still a main contributory factor for perioperative morbidity and mortality. Many national associations have developed algorithms for management of these time critical events. For implementation of these algorithms the provision of technical requirements and procedure-related training are essential. Severe airway incidents are rare events and clinical experience of the individual operators is limited; therefore, simulation is an adequate instrument for training and evaluating difficult airway algorithms. The aim of this observational study was to evaluate the application of the institutional difficult airway algorithm among anesthetists. After ethics committee approval, anesthetists were observed while treating a "cannot intubate" (CI) and a "cannot intubate, cannot ventilate" (CICV) situation in the institutional simulation center. As leader of a supportive team the participants had to deal with an unexpected difficult airway after induction of anesthesia in a patient simulator. The following data were recorded: sequence of the applied airway instruments, time to ventilation after establishing a secured airway using any instrument in the CI situation and time to ventilation via cricothyrotomy in the CICV situation. Conformity to the algorithm was defined by the sequence of the applied instruments. Analysis comprised conformity to the algorithm, non-parametric tests for time to ventilation and differences between junior and senior anesthetists. Out of 50 participants 45 were analyzed in the CI situation. In this situation 93% of the participants acted in conformity with the algorithm. In 62% the airway was secured by flexible intubation endoscopy, in 38% with another device. Data from 46 participants were analyzed in the CICV situation. In this situation 91% acted in conformity with the algorithm. The last device used prior to the decision for cricothyrotomy was flexible intubation endoscopy in 39%, a

  14. Interdisciplinary development and implementation of communication checklist for postoperative management of pediatric airway patients.

    Science.gov (United States)

    Kim, Sang W; Maturo, Stephen; Dwyer, Danielle; Monash, Bradley; Yager, Phoebe H; Zanger, Kerstin; Hartnick, Christopher J

    2012-01-01

    The authors describe their multidisciplinary experience in applying the Institute of Health Improvement methodology to develop a protocol and checklist to reduce communication error during transfer of care for postoperative pediatric surgical airway patients. Preliminary outcome data following implementation of the protocol and checklist are also presented. Prospective study from July 1, 2009, to February 1, 2011. Tertiary care center. Subjects. One hundred twenty-six pediatric airway patients who required coordinated care between Massachusetts Eye and Ear Infirmary and Massachusetts General Hospital. Two sentinel events involving airway emergencies demonstrated a critical need for a standardized, comprehensive instrument that would ensure safe transfer of care. After development and implementation of the protocol and checklist, an initial pilot period on the first set of 9 pediatric airway patients was reassessed. Subsequent prospective 11-month follow-up data of 93 pediatric airway patients were collected and analyzed. A multidisciplinary pediatric team developed and implemented a formalized, postoperative checklist and transfer protocol. After implementation of the checklist and transfer protocol, prospective analysis showed no adverse events from miscommunication during transfer of care over the subsequent 11-month period involving 93 pediatric airway patients. There has been very little written in the quality and safety patient literature about coordinating effective transfer of care between the pediatric surgical and medical subspecialty realms. After design and implementation of a simple, electronically based transfer-of-care checklist and protocol, the number of postsurgical pediatric airway information transfer and communication errors decreased significantly.

  15. Airway management by the general practitioner in trauma patients. Technical and non-technical skills

    Directory of Open Access Journals (Sweden)

    Juan David Dominguez-Sánchez

    2016-07-01

    Full Text Available General practitioners must constantly face challenges imposed by their profession when performing interventions that are necessary for their patients. Many of these interventions not only require proper use of theoretical knowledge, but also putting into practice non-technical and psychomotor skills developed through professional training. Given the specific characteristics of each patient, the clinical setting in the which procedure takes place and the limited skills of the professional, the management of the airway of a patient with trauma injuries in the emergency room represents a major challenge for physicians.

  16. All India Difficult Airway Association 2016 guidelines for the management of unanticipated difficult tracheal intubation in obstetrics

    Directory of Open Access Journals (Sweden)

    Venkateswaran Ramkumar

    2016-01-01

    Full Text Available The various physiological changes in pregnancy make the parturient vulnerable for early and rapid desaturation. Severe hypoxaemia during intubation can potentially compromise two lives (mother and foetus. Thus tracheal intubation in the pregnant patient poses unique challenges, and necessitates meticulous planning, ready availability of equipment and expertise to ensure maternal and foetal safety. The All India Difficult Airway Association (AIDAA proposes a stepwise plan for the safe management of the airway in obstetric patients. These guidelines have been developed based on available evidence; wherever robust evidence was lacking, recommendations were arrived at by consensus opinion of airway experts, incorporating the responses to a questionnaire sent to members of the AIDAA and the Indian Society of Anaesthesiologists (ISA. Modified rapid sequence induction using gentle intermittent positive pressure ventilation with pressure limited to ≤20 cm H 2 O is acceptable. Partial or complete release of cricoid pressure is recommended when face mask ventilation, placement of supraglottic airway device (SAD or tracheal intubation prove difficult. One should call for early expert assistance. Maternal SpO 2 should be maintained ≥95%. Apnoeic oxygenation with nasal insufflation of 15 L/min oxygen during apnoea should be performed in all patients. If tracheal intubation fails, a second- generation SAD should be inserted. The decision to continue anaesthesia and surgery via the SAD, or perform fibreoptic-guided intubation via the SAD or wake up the patient depends on the urgency of surgery, foeto-maternal status and availability of resources and expertise. Emergency cricothyroidotomy must be performed if complete ventilation failure occurs.

  17. Protective effects of valproic acid against airway hyperresponsiveness and airway remodeling in a mouse model of allergic airways disease.

    Science.gov (United States)

    Royce, Simon G; Dang, William; Ververis, Katherine; De Sampayo, Nishika; El-Osta, Assam; Tang, Mimi L K; Karagiannis, Tom C

    2011-12-01

    Airway remodeling and airway hyperresponsiveness are major aspects of asthma pathology that are not targeted optimally by existing anti-inflammatory drugs. Histone deacetylase inhibitors have a wide range of effects that may potentially abrogate aspects of remodeling. One such histone deacetylase inhibitor is valproic acid (2-propylvaleric acid). Valproic acid is used clinically as an anti-epileptic drug and is a potent inhibitor of class I histone deacetylases but also inhibits class II histone deacetylases. We used valproic acid as a molecular model of histone deacetylase inhibition in vivo in chronic allergic airways disease mice with airway remodeling and airway hyperresponsiveness. Wild-type Balb/c mice with allergic airways disease were treated with valproic acid or vehicle control. Airway inflammation was assessed by bronchoalveolar lavage fluid cell counts and examination of lung tissue sections. Remodeling was assessed by morphometric analysis of histochemically stained slides and lung function was assessed by invasive plethysmography measurement of airway resistance. Valproic acid treatment did not affect inflammation parameters; however, valproic acid treatment resulted in reduced epithelial thickness as compared to vehicle treated mice (p < 0.01), reduced subepithelial collagen deposition (p < 0.05) and attenuated airway hyperresponsiveness (p < 0.05 and p < 0.01 for the two highest doses of methacholine, respectively). These findings show that treatment with valproic acid can reduce structural airway remodeling changes and hyperresponsiveness, providing further evidence for the potential use of histone deacetylase inhibitors for the treatment of asthma.

  18. The effect of a standardised source of divided attention in airway management: A randomised, crossover, interventional manikin study.

    Science.gov (United States)

    Prottengeier, Johannes; Petzoldt, Marlen; Jess, Nikola; Moritz, Andreas; Gall, Christine; Schmidt, Joachim; Breuer, Georg

    2016-03-01

    Dual-tasking, the need to divide attention between concurrent tasks, causes a severe increase in workload in emergency situations and yet there is no standardised training simulation scenario for this key difficulty. We introduced and validated a quantifiable source of divided attention and investigated its effects on performance and workload in airway management. A randomised, crossover, interventional simulation study. Center for Training and Simulation, Department of Anaesthesiology, Erlangen University Hospital, Germany. One hundred and fifty volunteer medical students, paramedics and anaesthesiologists of all levels of training. Participants secured the airway of a manikin using a supraglottic airway, conventional endotracheal intubation and video-assisted endotracheal intubation with and without the Paced Auditory Serial Addition Test (PASAT), which served as a quantifiable source of divided attention. Primary endpoint was the time for the completion of each airway task. Secondary endpoints were the number of procedural mistakes made and the perceived workload as measured by the National Aeronautics and Space Administration's task load index (NASA-TLX). This is a six-dimensional questionnaire, which assesses the perception of demands, performance and frustration with respect to a task on a scale of 0 to 100. All 150 participants completed the tests. Volunteers perceived our test to be challenging (99%) and the experience of stress and distraction true to an emergency situation (80%), but still fair (98%) and entertaining (95%). The negative effects of divided attention were reproducible in participants of all levels of expertise. Time consumption and perceived workload increased and almost half the participants make procedural mistakes under divided attention. The supraglottic airway technique was least affected by divided attention. The scenario was effective for simulation training involving divided attention in acute care medicine. The significant effects

  19. Human factors in the development of complications of airway management: preliminary evaluation of an interview tool.

    Science.gov (United States)

    Flin, R; Fioratou, E; Frerk, C; Trotter, C; Cook, T M

    2013-08-01

    The 4th National Audit Project of the Royal College of Anaesthetists and the Difficult Airway Society (NAP4) analysed reports of serious events arising from airway management during anaesthesia, intensive care and the emergency department. We conducted supplementary telephone interviews with 12 anaesthetists who had reported to NAP4, aiming to identify causal factors using a method based on the Human Factors Investigation Tool (HFIT). We identified contributing human factors in all cases (median [range] 4.5 [1-10] per case). The most frequent related to: situation awareness (failures to anticipate, wrong decision) (nine cases); job factors (e.g. task difficulty; staffing, time pressure) (eight cases); and person factors (e.g. tiredness, hunger, stress) (six cases). Protective factors, such as teamwork and communication, were also revealed. The post-report HFIT interview method identified relevant human factors and this approach merits further testing as part of the investigation of anaesthetic incidents. Anaesthesia © 2013 The Association of Anaesthetists of Great Britain and Ireland.

  20. Impact of upper airway abnormalities on the success and adherence to mandibular advancement device treatment in patients with Obstructive Sleep Apnea Syndrome.

    Science.gov (United States)

    Prescinotto, Renato; Haddad, Fernanda Louise Martinho; Fukuchi, Ilana; Gregório, Luiz Carlos; Cunali, Paulo Afonso; Tufik, Sérgio; Bittencourt, Lia Rita Azeredo

    2015-01-01

    The mandibular advancement device (MAD) is a option to treat patients with Obstructive Sleep Apnea Syndrome (OSAS). To assess the influence of upper airway abnormalities on the success of and adherence to MAD in patients with OSAS. Prospective study with 30 patients with mild to moderate OSAS and indications for MAD. The protocol included questionnaires addressing sleep and nasal complaints, polysomnography, and upper airway assessment. The analyzed parameters of patients who showed therapeutic success and failure and those who exhibited good and poor treatment adherence were compared. 28 patients completed the protocol; 64.3% responded successfully to treatment with MAD, and 60.7% exhibited good adherence to treatment. Factors associated with greater success rates were younger age (p=0.02), smaller cervical circumference (p=0.05), and lower AHI at baseline (p=0.05). There was a predominance of patients without nasal abnormalities among patients treated successfully compared to those with treatment failure (p=0.04), which was not observed in relation to adherence. Neither pharyngeal nor facial skeletal abnormalities were significantly associated with either therapeutic success or adherence. MAD treatment success was significantly lower among patients with nasal abnormalities; however, treatment adherence was not influenced by the presence of upper airway or facial skeletal abnormalities. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  1. Radiographic anatomy and pathology of the child's airway

    International Nuclear Information System (INIS)

    Gay, B.B. Jr.

    1987-01-01

    The laryngotracheal airway has been considered the ''bottle-neck'' of the lungs. Any compromise of this already rather small pathway can easily result in a life-threatening situation. Rapid, accurate diagnosis is essential for proper clinical management of a compromised airway. Radiologic studies play a major role in the clinical investigation of patients with serious airway problems. There are notable differences between the anatomy of the upper airway of the adult and that of the young child or infant. In the infant, however, some differences in the radiographic patterns must be kept in mind. In the first 6 months of life, the adenoid shadow is not well defined and is normally absent until 1 month of age. During swallowing there is a lack of air in the pharynx with elevation of the larynx. Air may be seen in the cervical esophagus. All of these physiologic variations must be considered when interpreting radiographs of the neck in the young child

  2. Incomplete adherence to the ASA difficult airway algorithm is unchanged after a high-fidelity simulation session.

    Science.gov (United States)

    Borges, Bruno C R; Boet, Sylvain; Siu, Lyndon W; Bruppacher, Heinz R; Naik, Viren N; Riem, Nicole; Joo, Hwan S

    2010-07-01

    Although guidelines for difficult airway management have been published, the extent to which consultant anesthesiologists follow these guidelines has not been determined. The purpose of this study is to observe how consultant anesthesiologists manage a "cannot intubate, cannot ventilate" (CICV) scenario in a high-fidelity simulator and to evaluate whether a simulation teaching session improves their adherence to the American Society of Anesthesiologists (ASA) difficult airway algorithm. With Ethics Board approval and informed consent, all staff anesthesiologists in a single tertiary care institution were invited to enrol in this study where they managed a simulated unanticipated CICV scenario in a high-fidelity simulator. The scenario involved a patient with a difficult airway whose trachea could not be intubated and where it was impossible to ventilate the patient's lungs. Airway management options, including laryngeal mask airway, a fibreoptic bronchoscope, and a Glidescope were available for use but scripted to fail. A percutaneous cricothyroidotomy was required to re-establish adequate ventilation. Following the scenario, there was a personalized one-hour video-assisted expert debriefing focusing on the ASA difficult airway guidelines and "hands-on" cricothyroidotomy teaching. The second scenario followed immediately with an identical CICV scenario. The content to either scenario was not revealed beforehand. Outcome measures included: 1) major deviations from the ASA difficult airway guidelines; 2) time to start cricothyroidotomy; and 3) time to achieve ventilation. Thirty-eight anesthesiologists agreed to participate. The number of major deviations from the ASA algorithm was similar in the first and second sessions. These deviations included: multiple laryngoscopies (0 vs 2 pre-post; P = 0.49), use of fibreoptic bronchoscope (8 vs 7 pre-post; P = 1.0), bypass of laryngeal mask airway attempt (7 vs 13 pre-post; P = 0.19), and failure to call for anesthetic help

  3. Atopic asthmatic immune phenotypes associated with airway microbiota and airway obstruction.

    Directory of Open Access Journals (Sweden)

    Benjamin A Turturice

    Full Text Available Differences in asthma severity may be related to inflammation in the airways. The lower airway microbiota has been associated with clinical features such as airway obstruction, symptom control, and response to corticosteroids.To assess the relationship between local airway inflammation, severity of disease, and the lower airway microbiota in atopic asthmatics.A cohort of young adult, atopic asthmatics with intermittent or mild/moderate persistent symptoms (n = 13 were assessed via bronchoscopy, lavage, and spirometry. These individuals were compared to age matched non-asthmatic controls (n = 6 and to themselves after six weeks of treatment with fluticasone propionate (FP. Inflammation of the airways was assessed via a cytokine and chemokine panel. Lower airway microbiota composition was determined by metagenomic shotgun sequencing.Unsupervised clustering of cytokines and chemokines prior to treatment with FP identified two asthmatic phenotypes (AP, termed AP1 and AP2, with distinct bronchoalveolar lavage inflammatory profiles. AP2 was associated with more obstruction, compared to AP1. After treatment with FP reduced MIP-1β and TNF-α and increased IL-2 was observed. A module of highly correlated cytokines that include MIP-1β and TNF-α was identified that negatively correlated with pulmonary function. Independently, IL-2 was positively correlated with pulmonary function. The airway microbiome composition correlated with asthmatic phenotypes. AP2, prior to FP treatment, was enriched with Streptococcus pneumoniae. Unique associations between IL-2 or the cytokine module and the microbiota composition of the airways were observed in asthmatics subjects prior to treatment but not after or in controls.The underlying inflammation in atopic asthma is related to the composition of microbiota and is associated with severity of airway obstruction. Treatment with inhaled corticosteroids was associated with changes in the airway inflammatory response to

  4. Continuing the Original Stanford Sleep Surgery Protocol From Upper Airway Reconstruction to Upper Airway Stimulation: Our First Successful Case.

    Science.gov (United States)

    Liu, Stanley Yung; Riley, Robert Wayne

    2017-07-01

    In 1993, a surgical protocol for dynamic upper airway reconstruction in patients with obstructive sleep apnea (OSA) was published, and it became commonly known as the Stanford phase 1 and 2 sleep surgery protocol. It served as a platform on which research and clinical studies have continued to perfect the surgical care of patients with OSA. However, relapse is inevitable in a chronic condition such as OSA, and a subset of previously cured surgical patients return with complaints of excessive daytime sleepiness. This report describes a patient who was successfully treated with phase 1 and 2 operations more than a decade previously. He returned at 65 years of age with relapse of moderate OSA, and after workup with polysomnography and drug-induced sleep endoscopy, he underwent upper airway stimulation of the hypoglossal nerve that resulted in a cure of OSA. This case shows why upper airway stimulation is an appropriate option for patients with OSA relapse, after previously successful maxillomandibular advancement. Copyright © 2017. Published by Elsevier Inc.

  5. Effects of mandibular setback with or without maxillary advancement osteotomies on pharyngeal airways: An overview of systematic reviews.

    Directory of Open Access Journals (Sweden)

    Su Keng Tan

    Full Text Available Mandibular setback osteotomies potentially lead to narrowing of the pharyngeal airways, subsequently resulting in post-surgical obstructive sleep apnea (OSA.To summarize current evidence from systematic reviews that has evaluated pharyngeal airway changes after mandibular setback with or without concomitant upper jaw osteotomies.PubMed, EMBASE, Web of Science, and Cochrane Library databases were searched with no restriction of language or date. Systematic reviews studying changes in pharyngeal airway dimensions and respiratory parameters after mandibular setback with or without concomitant upper jaw osteotomies have been identified, screened for eligibility, included and analyzed in this study.Six systematic reviews have been included. While isolated mandibular setback osteotomies result in reduced oropharyngeal airway dimensions, the reduction is lesser in cases with concomitant upper jaw osteotomies. Only scarce evidence exists currently to what happens to naso- and hypo-pharyngeal airways. There is no evidence for post-surgical OSA, even though some studies reported reduced respiratory parameters after single-jaw mandibular setback with or without concomitant upper jaw osteotomies.Although mandibular setback osteotomies reduce pharyngeal airway dimensions, evidence confirming post-surgical OSA was not found. Nevertheless, potential post-surgical OSA should be taken into serious consideration during the treatment planning of particular orthognathic cases. As moderate evidence exists that double-jaw surgeries lead to less compromised post-surgical pharyngeal airways, they should be considered as the method of choice especially in cases with severe dentoskeletal Class III deformity.PROSPERO (registration number: CRD42016046484.

  6. HEMODYNAMIC STATUS IN AIRWAY MANAGEMENT DURING GENERAL ANESTHESIA: COMPARISON OF THREE METHODS

    OpenAIRE

    K MONTAZERI; KH NAGHIBI; A.A AKHOUNDI

    2000-01-01

    Introduction. The laryngeal mask airway (LMA) was recently introduced in general anesthesia as an alternative to the face mask or tracheal intubation for airway maintenance. Methods. The effects of LMA insertion, face mask or tracheal intubation on homodynamic status were studied in 195 normotensive patients who underwent elective transurethral lithotripsy (TUL). The patients were monitored with blood pressure measurement and pulse oximetry. Anesthesia was induced with sodium thiopental,...

  7. Management of advanced melanoma

    International Nuclear Information System (INIS)

    Nathanson, L.

    1986-01-01

    This book presents papers on the subject of management of advanced melanoma. The topics covered are: non-investigational cytotoxic agents; high-dosage chemotherapy in antologous bone marrow transplantation; Radiotherapy of melanomas; hyperthermia; ureal melanoma; surgical treatment of recurrent a metastatic melanoma; role of interferons in management of melanoma and molecular genetics of melanoma

  8. A study of the quality and effectiveness of the Airway Science Electronic Systems program to meet the workforce needs of the Federal Aviation Administration

    Science.gov (United States)

    Hedge, Clarence Alvin

    1999-11-01

    Scope and method of study. The purpose of the study was to determine the quality and effectiveness of the Airway Science Electronics Systems program to meet the workforce needs of the Federal Aviation Administration (FAA). The study was to research traditional FAA hired electronics technicians and Airway Science degree graduate electronics technicians. More specially, the study sought (1) to compare the traditional electronics training course requirements to the Airway Science curriculum course requirements, (2) to examine the ratio of Airway Science Electronics Systems graduates to graduates of other Airway Science options and also related electronics training and (3) to determine strengths and weaknesses in the Airway Science Electronics System. Findings and conclusions. The data were obtained by questionnaires sent to (1) the 61 recognized Airway Science Institutions, (2) personal interviews with department chairmen who are members of the Oklahoma City Aviation Aerospace Alliance and (3) personal interviews were also conducted with Electronics Technicians and supervisors at the Mike Monroney Aeronautical Center, Oklahoma City, Oklahoma. It was found that the present area of airway science curriculum encompasses Airway Science Management, Airway Computer Science, Airway Electronics Systems, Aviation Maintenance Management and Aircraft Systems Management. Programs in airway science are designed specifically to help prepare individuals for meeting the requirements for a strong educational background for tomorrow's aviation leaders. The data indicated that the majority of airway science students pursue careers with the FAA but also find even greater opportunities in industry. The data also shows that in the surveyed schools with approved airway science programs, Airway Science Management was the most frequent offered program.

  9. Scaled experiments for improving diagnosis of pathological lower-airway obstruction

    Science.gov (United States)

    Liu, Chang; Kiger, Ken; Hariprasad, Daniel; Sul, Bora; Wallqvist, Anders; Reifman, Jaques

    2017-11-01

    Many lung diseases, such as asthma and chronic obstructive pulmonary disease, are characterized by obstructed airflow, particularly, in the lower airway branches in the lung. Existing diagnostic tools cannot detect some diseases due to a lack of instrumentation capable of resolving the flow in the lower airways. Recent developments in MRI techniques using hyperpolarized 3He now permit measurement of velocity profiles within the trachea. Motivated by these advances, we aim to provide a better understanding of the connection between lower-airway obstruction and velocity profiles within the trachea. Specifically, we asked whether the flow deficits created by lower-airway obstructions could be detected in the trachea to permit diagnosis of the pathology. To test this idea, we used refractive index-matched materials to construct a scaled, patient-specific, transparent lung model, and coupled it to 5 independently controlled piston pumps that could generate arbitrary flow histories (healthy or diseased) for the 5 different lung lobes. Results obtained by stereo PIV within various regions of the airway network will be presented documenting the system performance and examining the detectability of under-performing lobes within the tracheal flow profile. This work supported by the Henry M. Jackson Foundation under award #3270.

  10. Advanced Interval Management: A Benefit Analysis

    Science.gov (United States)

    Timer, Sebastian; Peters, Mark

    2016-01-01

    This document is the final report for the NASA Langley Research Center (LaRC)- sponsored task order 'Possible Benefits for Advanced Interval Management Operations.' Under this research project, Architecture Technology Corporation performed an analysis to determine the maximum potential benefit to be gained if specific Advanced Interval Management (AIM) operations were implemented in the National Airspace System (NAS). The motivation for this research is to guide NASA decision-making on which Interval Management (IM) applications offer the most potential benefit and warrant further research.

  11. Airway resistance at maximum inhalation as a marker of asthma and airway hyperresponsiveness

    Directory of Open Access Journals (Sweden)

    O'Connor George T

    2011-07-01

    Full Text Available Abstract Background Asthmatics exhibit reduced airway dilation at maximal inspiration, likely due to structural differences in airway walls and/or functional differences in airway smooth muscle, factors that may also increase airway responsiveness to bronchoconstricting stimuli. The goal of this study was to test the hypothesis that the minimal airway resistance achievable during a maximal inspiration (Rmin is abnormally elevated in subjects with airway hyperresponsiveness. Methods The Rmin was measured in 34 nonasthmatic and 35 asthmatic subjects using forced oscillations at 8 Hz. Rmin and spirometric indices were measured before and after bronchodilation (albuterol and bronchoconstriction (methacholine. A preliminary study of 84 healthy subjects first established height dependence of baseline Rmin values. Results Asthmatics had a higher baseline Rmin % predicted than nonasthmatic subjects (134 ± 33 vs. 109 ± 19 % predicted, p = 0.0004. Sensitivity-specificity analysis using receiver operating characteristic curves indicated that baseline Rmin was able to identify subjects with airway hyperresponsiveness (PC20 min % predicted, FEV1 % predicted, and FEF25-75 % predicted, respectively. Also, 80% of the subjects with baseline Rmin min > 145% predicted had hyperresponsive airways, regardless of clinical classification as asthmatic or nonasthmatic. Conclusions These findings suggest that baseline Rmin, a measurement that is easier to perform than spirometry, performs as well as or better than standard spirometric indices in distinguishing subjects with airway hyperresponsiveness from those without hyperresponsive airways. The relationship of baseline Rmin to asthma and airway hyperresponsiveness likely reflects a causal relation between conditions that stiffen airway walls and hyperresponsiveness. In conjunction with symptom history, Rmin could provide a clinically useful tool for assessing asthma and monitoring response to treatment.

  12. Alternatives for OSAHS treatment: selection of patients for upper airway surgery and oral appliances

    Directory of Open Access Journals (Sweden)

    A. Boudewyns

    2007-12-01

    Full Text Available Although continuous positive airway pressure (CPAP is considered to represent the standard treatment for patients with moderate-to-severe obstructive sleep apnoea/hypopnoea syndrome (OSAHS, poor treatment compliance and/or refusal is an issue in 20–30% of these patients. As an alternative to life-long CPAP treatment, conservative procedures exist with dental appliances for mandibular advancement, as well as curative surgical techniques. Surgical treatment of OSAHS can be divided into the following two main groups: 1 upper airway surgery by soft tissue resection (uvulopalatopharyngoplasty, etc., and 2 skeletal procedures, such as maxillo-mandibular advancement. Proper selection of patients for the different treatment modalities is the key for full treatment success. Patient-related factors, such as the site of upper airway collapse, craniofacial characteristics, dental health, obesity, age, profession and positional dependence, as well as treatment-related factors, should be evaluated before a final proposal for these treatment alternatives is formulated.

  13. The New Perilaryngeal Airway (CobraPLA™)1 Is as Efficient as the Laryngeal Mask Airway (LMA™)2, But Provides Better Airway Sealing Pressures

    Science.gov (United States)

    Akça, Ozan; Wadhwa, Anupama; Sengupta, Papiya; Durrani, Jaleel; Hanni, Keith; Wenke, Mary; Yücel, Yüksel; Lenhardt, Rainer; Doufas, Anthony G.; Sessler, Daniel I.

    2006-01-01

    The Laryngeal Mask Airway (LMA) is a frequently-used efficient airway device, yet it sometimes seals poorly, thus reducing the efficacy of positive-pressure ventilation. The Perilaryngeal Airway (CobraPLA) is a novel airway device with a larger pharyngeal cuff (when inflated). We tested the hypothesis that the CobraPLA was superior to LMA with regard to insertion time and airway sealing pressure and comparable to LMA in airway adequacy and recovery characteristics. After midazolam and fentanyl, 81 ASA I-II outpatients having elective surgery were randomized to receive an LMA or CobraPLA. Anesthesia was induced with propofol (2.5 mg/kg, IV), and the airway inserted. We measured 1) insertion time; 2) adequacy of the airway (no leak at 15-cm-H2O peak pressure or tidal volume of 5 ml/kg); 3) airway sealing pressure; 4) number of repositioning attempts; and 5) sealing quality (no leak at tidal volume of 8 ml/kg). At the end of surgery, gastric insufflation, postoperative sore throat, dysphonia, and dysphagia were evaluated. Data were compared with unpaired t-tests, chi-square tests, or Fisher’s Exact tests; P<0.05 was significant. Patient characteristics, insertion times, airway adequacy, number of repositioning attempts, and recovery were similar in each group. Airway sealing pressure was significantly greater with CobraPLA (23±6 cm H2O) than LMA (18±5 cm H2O, P<0.001). The CobraPLA has insertion characteristics similar to LMA, but better airway sealing capabilities. PMID:15281543

  14. Nasopharyngeal encephalocele: a rare cause of upper airway obstruction.

    Science.gov (United States)

    Kalkan, Gokhan; Paksu, Sukru; Asilioglu, Nazik; Kiliç, Mehmet

    2013-04-01

    Nasopharyngeal encephalocele is a rare, benign congenital anomaly. It has the potential to be fatal due to airway obstruction. Here, we report on a 34-day-old infant with pneumonia who underwent mechanical ventilation. An upper airway evaluation was performed due to prolonged intubation, and revealed the presence of a nasopharyngeal encephalocele. The patient tolerated extubation and oral feeding after surgical resection of the lesion. Awareness of the condition can help clinicians arrive at an earlier diagnosis and enhance management.

  15. Inhaled antibiotics for lower airway infections.

    Science.gov (United States)

    Quon, Bradley S; Goss, Christopher H; Ramsey, Bonnie W

    2014-03-01

    Inhaled antibiotics have been used to treat chronic airway infections since the 1940s. The earliest experience with inhaled antibiotics involved aerosolizing antibiotics designed for parenteral administration. These formulations caused significant bronchial irritation due to added preservatives and nonphysiologic chemical composition. A major therapeutic advance took place in 1997, when tobramycin designed for inhalation was approved by the U.S. Food and Drug Administration (FDA) for use in patients with cystic fibrosis (CF) with chronic Pseudomonas aeruginosa infection. Attracted by the clinical benefits observed in CF and the availability of dry powder antibiotic formulations, there has been a growing interest in the use of inhaled antibiotics in other lower respiratory tract infections, such as non-CF bronchiectasis, ventilator-associated pneumonia, chronic obstructive pulmonary disease, mycobacterial disease, and in the post-lung transplant setting over the past decade. Antibiotics currently marketed for inhalation include nebulized and dry powder forms of tobramycin and colistin and nebulized aztreonam. Although both the U.S. Food and Drug Administration and European Medicines Agency have approved their use in CF, they have not been approved in other disease areas due to lack of supportive clinical trial evidence. Injectable formulations of gentamicin, tobramycin, amikacin, ceftazidime, and amphotericin are currently nebulized "off-label" to manage non-CF bronchiectasis, drug-resistant nontuberculous mycobacterial infections, ventilator-associated pneumonia, and post-transplant airway infections. Future inhaled antibiotic trials must focus on disease areas outside of CF with sample sizes large enough to evaluate clinically important endpoints such as exacerbations. Extrapolating from CF, the impact of eradicating organisms such as P. aeruginosa in non-CF bronchiectasis should also be evaluated.

  16. Endoscopic Intubation with Aid of Mechanical Ventilation via a Dedicated Nasopharyngeal Airway

    Directory of Open Access Journals (Sweden)

    Wen-Jue Soong

    2007-09-01

    Full Text Available A young child with jaw-neck-sternum immobility suffering from acute upper airway obstruction was treated with nasotracheal intubation using flexible endoscope (FE. During this difficult intubation, an inserted trimming endotracheal tube acted as a nasopharyngeal airway and simultaneous supplement with mechanical ventilation through the tube successfully resuscitated and improved the patient's ventilation and oxygenation. This management can greatly facilitate visualization of the laryngeal apparatus and translaryngeal passage of the FE. This technique can be helpful in resuscitative ventilation and difficult intubation in a critical upper airway emergency.

  17. Eosinophilic airway inflammation in asthmatic patients is associated with an altered airway microbiome

    DEFF Research Database (Denmark)

    Sverrild, Asger; Kiilerich, Pia; Brejnrod, Asker Daniel

    2017-01-01

    BACKGROUND: Asthmatic patients have higher microbiome diversity and an altered composition, with more Proteobacteria and less Bacteroidetes compared with healthy control subjects. Studies comparing airway inflammation and the airway microbiome are sparse, especially in subjects not receiving anti......-inflammatory treatment. OBJECTIVE: We sought to describe the relationship between the airway microbiome and patterns of airway inflammation in steroid-free patients with asthma and healthy control subjects. METHODS: Bronchoalveolar lavage fluid was collected from 23 steroid-free nonsmoking patients with asthma and 10...... and AHR to mannitol but not airway neutrophilia. The overall composition of the airway microbiome of asthmatic patients with the lowest levels of eosinophils but not asthmatic patients with the highest levels of eosinophils deviated significantly from that of healthy subjects. Asthmatic patients...

  18. Automatic airway-artery analysis on lung CT to quantify airway wall thickening and bronchiectasis

    DEFF Research Database (Denmark)

    Perez-Rovira, Adria; Kuo, Wieying; Petersen, Jens

    2016-01-01

    Purpose: Bronchiectasis and airway wall thickening are commonly assessed in computed tomography (CT) by comparing the airway size with the size of the accompanying artery. Thus, in order to automate the quantification of bronchiectasis and wall thickening following a similar principle......, and pairs airway branches with the accompanying artery, then quantifies airway wall thickening and bronchiectasis by measuring the wall-artery ratio (WAR) and lumen and outer wall airway-artery ratio (AAR). Measurements that do not use the artery size for normalization are also extracted, including wall...... area percentage (WAP), wall thickness ratio (WTR), and airway diameters. Results: The method was thoroughly evaluated using 8000 manual annotations of airway-artery pairs from 24 full-inspiration pediatric CT scans (12 diseased and 12 controls). Limits of agreement between the automatically...

  19. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... Treatments and Therapies Airway Clearance Airway Clearance Techniques (ACTs) There are different ways to clear your airways. ... or caregiver. Older kids and adults can choose ACTs that they can do on their own. Share ...

  20. Spinal movement and dural sac compression during airway management in a cadaveric model with atlanto-occipital instability.

    Science.gov (United States)

    Liao, Shiyao; Schneider, Niko R E; Weilbacher, Frank; Stehr, Anne; Matschke, Stefan; Grützner, Paul A; Popp, Erik; Kreinest, Michael

    2017-12-01

    To analyze the compression of the dural sac and the cervical spinal movement during performing different airway interventions in case of atlanto-occipital dislocation. In six fresh cadavers, atlanto-occipital dislocation was performed by distracting the opened atlanto-occipital joint capsule and sectioning the tectorial membrane. Airway management was done using three airway devices (direct laryngoscopy, video laryngoscopy, and insertion of a laryngeal tube). The change of dural sac's width and intervertebral angulation in stable and unstable atlanto-occipital conditions were recorded by video fluoroscopy with myelography. Three-dimensional overall movement of cervical spine was measured in a wireless human motion track system. Compared with a mean dural sac compression of - 0.5 mm (- 0.7 to - 0.3 mm) in stable condition, direct laryngoscopy caused an increased dural sac compression of - 1.6 mm (- 1.9 to - 0.6 mm, p = 0.028) in the unstable atlanto-occipital condition. No increased compression on dural sac was found using video laryngoscopy or the laryngeal tube. Moreover, direct laryngoscopy caused greater overall extension and rotation of cervical spine than laryngeal tube insertion in both stable and unstable conditions. Among three procedures, the insertion of a laryngeal tube took the shortest time. In case of atlanto-occipital dislocation, intubation using direct laryngoscopy exacerbates dural sac compression and may cause damage to the spinal cord.

  1. The treatment of complex airway diseases with inverted Y-shaped self-expandable metal stent

    International Nuclear Information System (INIS)

    Li Jianming; Jia Guangzhi

    2011-01-01

    Objective: To investigate the application and therapeutic effects of inverted Y-shaped self-expandable metal airway stent in treating complex airway diseases (stenosis or fistula). Methods: According to the distinctive anatomic structure and the pathological changes of complex airway stenosis or fistula, the inverted y-shaped self-expandable metal airway stent was designed. Under fluoroscopic monitoring, a total of 12 inverted Y-shaped self-expandable metal stents were implanted in 12 patients with complex airway diseases. Results: Stent placement in the trachea-bronchial tree was technically successful in all patients. After the operation, the symptom of dyspnea was immediately relieved and the bucking following food intake disappeared. The general physical condition and living quality were much improved in all patients. Conclusion: The use of inverted Y-shaped self-expandable metal airway stent for the management of complex airway stenosis involving the tracheal carina was a simple and safe procedure and it has satisfactory short-term clinical results. (authors)

  2. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... to loosen mucus from airway walls. See how different airway clearance techniques work to help you clear the thick, sticky mucus ... Offer their tips for fitting ACTs into daily life Airway Clearance Techniques | Webcast ... Facebook Twitter ...

  3. The All India Difficult Airway Association 2016 guidelines for tracheal intubation in the Intensive Care Unit

    Directory of Open Access Journals (Sweden)

    Sheila Nainan Myatra

    2016-01-01

    Full Text Available Tracheal intubation (TI is a routine procedure in the Intensive Care Unit (ICU and is often life-saving. In contrast to the controlled conditions in the operating room, critically ill patients with respiratory failure and shock are physiologically unstable. These factors, along with a suboptimal evaluation of the airway and limited oxygen reserves despite adequate pre-oxygenation, are responsible for a high incidence of life-threatening complications such as severe hypoxaemia and cardiovascular collapse during TI in the ICU. The All India Difficult Airway Association (AIDAA proposes a stepwise plan for safe management of the airway in critically ill patients. These guidelines have been developed based on available evidence; wherever robust evidence was lacking, recommendations were arrived at by consensus opinion of airway experts, incorporating the responses to a questionnaire sent to members of the AIDAA and the Indian Society of Anaesthesiologists. Non-invasive positive pressure ventilation during pre-oxygenation improves oxygen stores in patients with respiratory pathology. Nasal insufflation of oxygen at 15 L/min can increase the duration of apnoea before the occurrence of hypoxaemia. High-flow nasal cannula oxygenation at 60-70 L/min may also increase safety during TI in critically ill patients. Stable haemodynamics and gas exchange must be maintained during rapid sequence induction. It is necessary to implement an intubation protocol during routine airway management in the ICU. Adherence to a plan for difficult airway management incorporating the use of intubation aids and airway rescue devices and strategies is useful.

  4. Efficacy of Surgical Airway Plasty for Benign Airway Stenosis.

    Science.gov (United States)

    Tsukioka, Takuma; Takahama, Makoto; Nakajima, Ryu; Kimura, Michitaka; Inoue, Hidetoshi; Yamamoto, Ryoji

    2016-01-01

    Long-term patency is required during treatment for benign airway stenosis. This study investigated the effectiveness of surgical airway plasty for benign airway stenosis. Clinical courses of 20 patients, who were treated with surgical plasty for their benign airway stenosis, were retrospectively investigated. Causes of stenosis were tracheobronchial tuberculosis in 12 patients, post-intubation stenosis in five patients, malacia in two patients, and others in one patient. 28 interventional pulmonology procedures and 20 surgical plasty were performed. Five patients with post-intubation stenosis and four patients with tuberculous stenosis were treated with tracheoplasty. Eight patients with tuberculous stenosis were treated with bronchoplasty, and two patients with malacia were treated with stabilization of the membranous portion. Anastomotic stenosis was observed in four patients, and one to four additional treatments were required. Performance status, Hugh-Jones classification, and ventilatory functions were improved after surgical plasty. Outcomes were fair in patients with tuberculous stenosis and malacia. However, efficacy of surgical plasty for post-intubation stenosis was not observed. Surgical airway plasty may be an acceptable treatment for tuberculous stenosis. Patients with malacia recover well after surgical plasty. There may be untreated patients with malacia who have the potential to benefit from surgical plasty.

  5. Tracheostomy and radiotherapy in the management of laryngeal carcinoma causing airway obstruction

    Energy Technology Data Exchange (ETDEWEB)

    Dawes, P.J.D. [Sunderland District General Hospital (United Kingdom); Agrawal, R.K.; Dawes, P.J.D.K. [Newcastle General Hospital (United Kingdom); Williams, S. [Otago Univ., Dunedin (New Zealand)

    1997-09-01

    Between 1977 and 1985, 66 patients presenting with airway obstruction due to laryngeal squamous cell carcinoma were treated by tracheostomy and subsequent radiotherapy. Female survival (64% at 2 years and 35% at 5 years) was significantly better than male survival (19% at 2 years and 10% at 5 years). When four forms of management were compared, it appeared that 40 Gy in ten fractions over 21 days was associated with better survival. Because two of the treatment groups contained few patients, these were excluded from further analysis. When adjustments were made for sex, delay between tracheostomy and treatment, and residual disease, the difference in treatment response between those receiving 60+ Gy in 28-30 fractions over 42 days and those receiving 40 Gy in ten fractions over 21 days was not significant (hazard ratio 1.37; 95% CI 0.64-3.91). (author).

  6. Tracheostomy and radiotherapy in the management of laryngeal carcinoma causing airway obstruction

    International Nuclear Information System (INIS)

    Dawes, P.J.D.; Agrawal, R.K.; Dawes, P.J.D.K.; Williams, S.

    1997-01-01

    Between 1977 and 1985, 66 patients presenting with airway obstruction due to laryngeal squamous cell carcinoma were treated by tracheostomy and subsequent radiotherapy. Female survival (64% at 2 years and 35% at 5 years) was significantly better than male survival (19% at 2 years and 10% at 5 years). When four forms of management were compared, it appeared that 40 Gy in ten fractions over 21 days was associated with better survival. Because two of the treatment groups contained few patients, these were excluded from further analysis. When adjustments were made for sex, delay between tracheostomy and treatment, and residual disease, the difference in treatment response between those receiving 60+ Gy in 28-30 fractions over 42 days and those receiving 40 Gy in ten fractions over 21 days was not significant (hazard ratio 1.37; 95% CI 0.64-3.91). (author)

  7. Hold your horses: A comparison of human laryngomalacia with analogous equine airway pathology.

    Science.gov (United States)

    Lawrence, Rachael J; Butterell, Matthew J; Constable, James D; Daniel, Matija

    2018-02-01

    Laryngomalacia is the most common cause of stridor in infants. Dynamic airway collapse is also a well-recognised entity in horses and an important cause of surgical veterinary intervention. We compare the aetiology, clinical features and management of human laryngomalacia with equine dynamic airway collapse. A structured review of the PubMed, the Ovid Medline and the Cochrane Collaboration databases (Cochrane Central Register of Controlled Trials, Cochrane Database of Systemic Reviews). There are numerous equine conditions that cause dynamic airway collapse defined specifically by the anatomical structures involved. Axial Deviation of the Aryepiglottic Folds (ADAF) is the condition most clinically analogous to laryngomalacia in humans, and is likewise most prevalent in the immature equine airway. Both conditions are managed either conservatively, or if symptoms require it, with surgical intervention. The operative procedures performed for ADAF and laryngomalacia are technically comparable. Dynamic collapse of the equine larynx, especially ADAF, is clinically similar to human laryngomalacia, and both are treated in a similar fashion. Copyright © 2017 Elsevier B.V. All rights reserved.

  8. Obstetric Anaesthetists' Association and Difficult Airway Society guidelines for the management of difficult and failed tracheal intubation in obstetrics*

    OpenAIRE

    Mushambi, M C; Kinsella, S M; Popat, M; Swales, H; Ramaswamy, K K; Winton, A L; Quinn, A C

    2015-01-01

    The Obstetric Anaesthetists' Association and Difficult Airway Society have developed the first national obstetric guidelines for the safe management of difficult and failed tracheal intubation during general anaesthesia. They comprise four algorithms and two tables. A master algorithm provides an overview. Algorithm 1 gives a framework on how to optimise a safe general anaesthetic technique in the obstetric patient, and emphasises: planning and multidisciplinary communication; how to prevent ...

  9. Prolonged ozone exposure in an allergic airway disease model: Adaptation of airway responsiveness and airway remodeling

    Directory of Open Access Journals (Sweden)

    Park Chang-Soo

    2006-02-01

    Full Text Available Abstract Background Short-term exposure to high concentrations of ozone has been shown to increase airway hyper-responsiveness (AHR. Because the changes in AHR and airway inflammation and structure after chronic ozone exposure need to be determined, the goal of this study was to investigate these effects in a murine model of allergic airway disease. Methods We exposed BALB/c mice to 2 ppm ozone for 4, 8, and 12 weeks. We measured the enhanced pause (Penh to methacholine and performed cell differentials in bronchoalveolar lavage fluid. We quantified the levels of IL-4 and IFN-γ in the supernatants of the bronchoalveolar lavage fluids using enzyme immunoassays, and examined the airway architecture under light and electron microscopy. Results The groups exposed to ozone for 4, 8, and 12 weeks demonstrated decreased Penh at methacholine concentrations of 12.5, 25, and 50 mg/ml, with a dose-response curve to the right of that for the filtered-air group. Neutrophils and eosinophils increased in the group exposed to ozone for 4 weeks compared to those in the filtered-air group. The ratio of IL-4 to INF-γ increased significantly after exposure to ozone for 8 and 12 weeks compared to the ratio for the filtered-air group. The numbers of goblet cells, myofibroblasts, and smooth muscle cells showed time-dependent increases in lung tissue sections from the groups exposed to ozone for 4, 8, and 12 weeks. Conclusion These findings demonstrate that the increase in AHR associated with the allergic airway does not persist during chronic ozone exposure, indicating that airway remodeling and adaptation following repeated exposure to air pollutants can provide protection against AHR.

  10. A passive quantitative measurement of airway resistance using depth data.

    Science.gov (United States)

    Ostadabbas, Sarah; Bulach, Christoph; Ku, David N; Anderson, Larry J; Ghovanloo, Maysam

    2014-01-01

    The Respiratory Syncytial Virus (RSV) is the most common cause of serious lower respiratory tract infections in infants and young children. RSV often causes increased airway resistance, clinically detected as wheezing by chest auscultation. In this disease, expiratory flows are significantly reduced due to the high resistance in patient's airway passages. A quantitative method for measuring resistance can have a great benefit to diagnosis and management of children with RSV infections as well as with other lung diseases. Airway resistance is defined as the lung pressure divided by the airflow. In this paper, we propose a method to quantify resistance through a simple, non-contact measurement of chest volume that can act as a surrogate measure of the lung pressure and volumetric airflow. We used depth data collected by a Microsoft Kinect camera for the measurement of the lung volume over time. In our experimentation, breathing through a number of plastic straws induced different airway resistances. For a standard spirometry test, our volume/flow estimation using Kinect showed strong correlation with the flow data collected by a commercially-available spirometer (five subjects, each performing 20 breathing trials, correlation coefficient = 0.88, with 95% confidence interval). As the number of straws decreased, emulating a higher airway obstruction, our algorithm was sufficient to distinguish between several levels of airway resistance.

  11. Advanced Distribution Management System

    OpenAIRE

    Avazov, Artur; Sobinova, Lubov Anatolievna

    2016-01-01

    This article describes the advisability of using advanced distribution management systems in the electricity distribution networks area and considers premises of implementing ADMS within the Smart Grid era. Also, it gives the big picture of ADMS and discusses the ADMS advantages and functionalities.

  12. Advanced Distribution Management System

    Science.gov (United States)

    Avazov, Artur R.; Sobinova, Liubov A.

    2016-02-01

    This article describes the advisability of using advanced distribution management systems in the electricity distribution networks area and considers premises of implementing ADMS within the Smart Grid era. Also, it gives the big picture of ADMS and discusses the ADMS advantages and functionalities.

  13. RAGE: a new frontier in chronic airways disease

    Science.gov (United States)

    Sukkar, Maria B; Ullah, Md Ashik; Gan, Wan Jun; Wark, Peter AB; Chung, Kian Fan; Hughes, J Margaret; Armour, Carol L; Phipps, Simon

    2012-01-01

    Asthma and chronic obstructive pulmonary disease (COPD) are heterogeneous inflammatory disorders of the respiratory tract characterized by airflow obstruction. It is now clear that the environmental factors that drive airway pathology in asthma and COPD, including allergens, viruses, ozone and cigarette smoke, activate innate immune receptors known as pattern-recognition receptors, either directly or indirectly by causing the release of endogenous ligands. Thus, there is now intense research activity focused around understanding the mechanisms by which pattern-recognition receptors sustain the airway inflammatory response, and how these mechanisms might be targeted therapeutically. One pattern-recognition receptor that has recently come to attention in chronic airways disease is the receptor for advanced glycation end products (RAGE). RAGE is a member of the immunoglobulin superfamily of cell surface receptors that recognizes pathogen- and host-derived endogenous ligands to initiate the immune response to tissue injury, infection and inflammation. Although the role of RAGE in lung physiology and pathophysiology is not well understood, recent genome-wide association studies have linked RAGE gene polymorphisms with airflow obstruction. In addition, accumulating data from animal and clinical investigations reveal increased expression of RAGE and its ligands, together with reduced expression of soluble RAGE, an endogenous inhibitor of RAGE signalling, in chronic airways disease. In this review, we discuss recent studies of the ligand–RAGE axis in asthma and COPD, highlight important areas for future research and discuss how this axis might potentially be harnessed for therapeutic benefit in these conditions. PMID:22506507

  14. Integrated care pathways for airway diseases (AIRWAYS-ICPs)

    DEFF Research Database (Denmark)

    Bousquet, J; Addis, A; Adcock, I

    2014-01-01

    The objective of Integrated Care Pathways for Airway Diseases (AIRWAYS-ICPs) is to launch a collaboration to develop multi-sectoral care pathways for chronic respiratory diseases in European countries and regions. AIRWAYS-ICPs has strategic relevance to the European Union Health Strategy...... and will add value to existing public health knowledge by: 1) proposing a common framework of care pathways for chronic respiratory diseases, which will facilitate comparability and trans-national initiatives; 2) informing cost-effective policy development, strengthening in particular those on smoking...... and environmental exposure; 3) aiding risk stratification in chronic disease patients, using a common strategy; 4) having a significant impact on the health of citizens in the short term (reduction of morbidity, improvement of education in children and of work in adults) and in the long-term (healthy ageing); 5...

  15. Management of airway foreign body using flexible bronchoscopy: Experience with 80 cases during 2011–2013

    Directory of Open Access Journals (Sweden)

    Safy Kaddah

    2015-01-01

    Conclusions: Flexible bronchoscopy is successful in retrieving airway foreign bodies (88.8%. With skilled personnel and perfect equipments, flexible bronchoscopy could be considered as the first choice for the removal of airway foreign body.

  16. Overview of airway involvement in tuberculosis

    International Nuclear Information System (INIS)

    Arora, Arundeep; Bhalla, Ashu Seith; Jana, Manisha; Sharma, Raju

    2013-01-01

    Pulmonary tuberculosis is a ubiquitous infection and a re-emerging medical and socioeconomic problem resulting in increasing mortality and morbidity, especially in Asian countries. We aim to review the spectrum of imaging findings in airway involvement in tuberculosis through characteristic radiological images and to assess the role of computed tomography and image-guided interventions in the diagnosis and management of pulmonary tuberculosis.

  17. Airway necrosis after salvage esophagectomy

    International Nuclear Information System (INIS)

    Tanaka, Norimitsu; Hokamura, Nobukazu; Tachimori, Yuji

    2010-01-01

    Salvage esophagectomy is the sole curative intent treatment for patients with persistent or recurrent locoregional disease after definitive chemoradiotherapy (CRT) for esophageal carcinoma. However, salvage esophagectomy is a very high-risk operation, and airway necrosis is a fatal complication. Between 1997 and 2007, 49 patients with thoracic esophageal cancer underwent salvage esophagectomy after definitive CRT. We retrospectively compared patients with and without airway necrosis, and investigated operative procedures related to airway necrosis. Airway necrosis occurred in five patients (10.2%), of four patients (80%) died during their hospitalization. Airway necrosis seemed to be closely related to operative procedures, such as resection of bronchial artery and cervical and subcarinal lymph node dissection. Bronchogastric fistula following necrosis of gastric conduit occured in 2 patients reconstructed through posterior mediastinal route. Airway necrosis is a highly lethal complication after salvage esophagectomy. It is important in salvage esophagectomy to take airway blood supply into consideration sufficiently and to reconstruct through retrosternal route to prevent bronchogastric fistula. (author)

  18. Advanced Distribution Management System

    Directory of Open Access Journals (Sweden)

    Avazov Artur R.

    2016-01-01

    Full Text Available This article describes the advisability of using advanced distribution management systems in the electricity distribution networks area and considers premises of implementing ADMS within the Smart Grid era. Also, it gives the big picture of ADMS and discusses the ADMS advantages and functionalities.

  19. The lower airway microbiota in early cystic fibrosis lung disease: a longitudinal analysis.

    Science.gov (United States)

    Frayman, Katherine B; Armstrong, David S; Carzino, Rosemary; Ferkol, Thomas W; Grimwood, Keith; Storch, Gregory A; Teo, Shu Mei; Wylie, Kristine M; Ranganathan, Sarath C

    2017-12-01

    In infants and young children with cystic fibrosis, lower airway infection and inflammation are associated with adverse respiratory outcomes. However, the role of lower airway microbiota in the pathogenesis of early cystic fibrosis lung disease remains uncertain. To assess the development of the lower airway microbiota over time in infants and young children with cystic fibrosis, and to explore its association with airway inflammation and pulmonary function at age 6 years. Serial, semi-annual bronchoscopies and bronchoalveolar lavage (BAL) procedures were performed in infants newly diagnosed with cystic fibrosis following newborn screening. Quantitative microbiological cultures and inflammatory marker (interleukin 8 and neutrophil elastase) measurements were undertaken contemporaneously. 16S ribosomal RNA gene sequencing was conducted on stored BAL samples. Spirometry results recorded at 6 years of age were extracted from medical records. Ninety-five BAL samples provided 16S ribosomal RNA gene data. These were collected from 48 subjects aged 1.2-78.3 months, including longitudinal samples from 27 subjects and 13 before age 6 months. The lower airway microbiota varied, but diversity decreased with advancing age. Detection of recognised cystic fibrosis bacterial pathogens was associated with reduced microbial diversity and greater lower airway inflammation. There was no association between the lower airway microbiota and pulmonary function at age 6 years. In infants with cystic fibrosis, the lower airway microbiota is dynamic. Dominance of the microbiota by recognised cystic fibrosis bacterial pathogens is associated with increased lower airway inflammation, however early microbial diversity is not associated with pulmonary function at 6 years of age. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.

  20. Relapsing polychondritis and airway involvement.

    Science.gov (United States)

    Ernst, Armin; Rafeq, Samaan; Boiselle, Phillip; Sung, Arthur; Reddy, Chakravarthy; Michaud, Gaetane; Majid, Adnan; Herth, Felix J F; Trentham, David

    2009-04-01

    To assess the prevalence and characteristics of airway involvement in relapsing polychondritis (RP). Retrospective chart review and data analysis of RP patients seen in the Rheumatology Clinic and the Complex Airway Center at Beth Israel Deaconess Medical Center from January 2004 through February 2008. RP was diagnosed in 145 patients. Thirty-one patients had airway involvement, a prevalence of 21%. Twenty-two patients were women (70%), and they were between 11 and 61 years of age (median age, 42 years) at the time of first symptoms. Airway symptoms were the first manifestation of disease in 17 patients (54%). Dyspnea was the most common symptom in 20 patients (64%), followed by cough, stridor, and hoarseness. Airway problems included the following: subglottic stenosis (n = 8; 26%); focal and diffuse malacia (n = 15; 48%); and focal stenosis in different areas of the bronchial tree in the rest of the patients. Twelve patients (40%) required and underwent intervention including balloon dilatation, stent placement, tracheotomy, or a combination of the above with good success. The majority of patients experienced improvement in airway symptoms after intervention. One patient died during the follow-up period from the progression of airway disease. The rest of the patients continue to undergo periodic evaluation and intervention. In this largest cohort described in the English language literature, we found symptomatic airway involvement in RP to be common and at times severe. The nature of airway problems is diverse, with tracheomalacia being the most common. Airway intervention is frequently required and in experienced hands results in symptom improvement.

  1. The effect of body weight on distal airway function and airway inflammation.

    Science.gov (United States)

    van de Kant, Kim D G; Paredi, Paolo; Meah, Sally; Kalsi, Harpal S; Barnes, Peter J; Usmani, Omar S

    Obesity is a global health problem that adversely influences the respiratory system. We assessed the effects of body mass index (BMI) on distal airway function and airway inflammation. Impulse oscillometry (IOS) as a measure of distal airway function, together with spirometry, were assessed in adults with a range of different BMIs. Airway inflammation was assessed with the fraction of exhaled nitric oxide (FeNO) and participants exhaled at various exhalation flows to determine alveolar and bronchial NO. In total 34 subjects were enrolled in the study; 19 subjects had a normal BMI (18.50-24.99), whilst 15 subjects were overweight (BMI 25.00-29.99), or obese (BMI ≥30). All subjects had normal spirometry. However, IOS measures of airway resistance (R) at 5Hz, 20Hz and frequency dependence (R 5-20 ) were elevated in overweight/obese individuals, compared to subjects with a normal BMI (median (interquartile range)); 5Hz: 0.41 (0.37, 0.45) vs. 0.32 (0.30, 0.37)kPa/l/s; 20Hz: 0.34 (0.30, 0.37) vs. 0.30 (0.26, 0.33)kPa/l/s; R 5-20 : 0.06 (0.04, 0.11) vs. 0.03 (0.01, 0.05)kPa/l/s; plimitation) and FeNO inflammatory measures, did not differ between groups (p>0.05). Being overweight has significant effects on distal and central airway function as determined by IOS, which is not detected by spirometry. Obesity does not influence airway inflammation as measured by FeNO. IOS is a reliable technique to identify airway abnormalities in the presence of normal spirometry in overweight people. Copyright © 2015 Asia Oceania Association for the Study of Obesity. Published by Elsevier Ltd. All rights reserved.

  2. A new technique of deploying dynamic y stent using flexible bronchoscope, video laryngoscope, and laryngeal mask airway.

    Science.gov (United States)

    Obeidat, Shadi; Badin, Shadi; Khawaja, Imran

    2010-04-01

    Dynamic Y stents are used in tracheobronchial obstruction, tracheal stenosis, and tracheomalacia. Placement may be difficult and is usually accomplished using a rigid grasping forceps (under fluoroscopic guidance) or a rigid bronchoscope. We report using a new stent placement technique on an elderly patient with a central tracheobronchial tumor. It included using a flexible bronchoscope, video laryngoscope, and laryngeal mask airway. The new technique we used has the advantages of continuous direct endoscopic visualization during stent advancement and manipulation, and securing the airways with a laryngeal mask airway at the same time. This technique eliminates the need for intraoperative fluoroscopy.

  3. Securing the Airway in Pretracheal Dermal Metastases From Oropharyngeal Carcinoma: A Case Report.

    Science.gov (United States)

    Truong, Angela T; Truong, Dam-Thuy; Gillenwater, Ann M; Soliz, Jose M; Rahlfs, Thomas F

    2018-04-23

    Dermal metastases reflect the ominous and aggressive spread of oropharyngeal squamous cell carcinomas. The rampant proliferation of these metastatic tumors to the neck results in respiratory distress and impending airway obstruction. We report a case of a patient with massive neck dermal metastases requiring urgent airway control for intermittent stridor. Awake tracheostomy is generally regarded as the gold standard to manage the compromised airway. However, in this unusual case, after discussion between surgeon and anesthesiologist, because of the anticipated formidable difficulties in performing awake tracheostomy, it was decided that awake fiberoptic intubation would provide the best chance of success.

  4. [Qualitative research of self-management behavior in patients with advanced schistosomiasis].

    Science.gov (United States)

    Wang, Jian-ping; Wang, Xing-ju; Bao, Hui-hong; Zhang, Hong; Xu, Zheng-rong

    2013-10-01

    To explore the self-management behavior of patients with advanced schistosomiasis, so as to provide the evidence for improving clinical nursing. A total of 18 patients with advanced schistosomiasis were interviewed in depth by using a semi structured interview method. The results were analyzed with Miles and Huberman content analysis method. Most of the patients with advanced schistosomiasis had self-management control behavior and were cooperated with medical assistance because of their seriously illness. Based on data analysis, the symptom management, follow-up management, a healthy lifestyle, medication awareness, and emotional management were obtained. The patients with advanced schistosomiasis have self management control behavior. Health care workers should promote the patients, their families and social people to participate in the self-management behavior of advanced schistosomiasis patients.

  5. Advanced thermal management materials

    CERN Document Server

    Jiang, Guosheng; Kuang, Ken

    2012-01-01

    ""Advanced Thermal Management Materials"" provides a comprehensive and hands-on treatise on the importance of thermal packaging in high performance systems. These systems, ranging from active electronically-scanned radar arrays to web servers, require components that can dissipate heat efficiently. This requires materials capable of dissipating heat and maintaining compatibility with the packaging and dye. Its coverage includes all aspects of thermal management materials, both traditional and non-traditional, with an emphasis on metal based materials. An in-depth discussion of properties and m

  6. Contemporary management of advanced laryngeal cancer.

    Science.gov (United States)

    Britt, Christopher J; Gourin, Christine G

    2017-10-01

    The treatment of advanced laryngeal cancer has undergone a paradigm shift in recent years, with an increase in chemoradiation for organ preservation and a decrease in primary surgery. This review will summarize the contemporary management of advanced laryngeal cancer and discuss treatment-related toxicity and strategies to improve outcomes. NA.

  7. Continuous positive airway pressure therapy: new generations.

    LENUS (Irish Health Repository)

    Garvey, John F

    2010-02-01

    Continuous positive airway pressure (CPAP) is the treatment of choice for obstructive sleep apnoea syndrome (OSAS). However, CPAP is not tolerated by all patients with OSAS and alternative modes of pressure delivery have been developed to overcome pressure intolerance, thereby improving patient comfort and adherence. Auto-adjustable positive airway pressure (APAP) devices may be utilised for the long-term management of OSAS and may also assist in the initial diagnosis of OSAS and titration of conventional CPAP therapy. Newer modalities such as C-Flex and A-Flex also show promise as treatment options in the future. However, the evidence supporting the use of these alternative modalities remains scant, in particular with regard to long-term cardiovascular outcomes. In addition, not all APAP devices use the same technological algorithms and data supporting individual APAP devices cannot be extrapolated to support all. Further studies are required to validate the roles of APAP, C-Flex and A-Flex. In the interim, standard CPAP therapy should continue as the mainstay of OSAS management.

  8. Continuous positive airway pressure therapy: new generations.

    LENUS (Irish Health Repository)

    Garvey, John F

    2012-02-01

    Continuous positive airway pressure (CPAP) is the treatment of choice for obstructive sleep apnoea syndrome (OSAS). However, CPAP is not tolerated by all patients with OSAS and alternative modes of pressure delivery have been developed to overcome pressure intolerance, thereby improving patient comfort and adherence. Auto-adjustable positive airway pressure (APAP) devices may be utilised for the long-term management of OSAS and may also assist in the initial diagnosis of OSAS and titration of conventional CPAP therapy. Newer modalities such as C-Flex and A-Flex also show promise as treatment options in the future. However, the evidence supporting the use of these alternative modalities remains scant, in particular with regard to long-term cardiovascular outcomes. In addition, not all APAP devices use the same technological algorithms and data supporting individual APAP devices cannot be extrapolated to support all. Further studies are required to validate the roles of APAP, C-Flex and A-Flex. In the interim, standard CPAP therapy should continue as the mainstay of OSAS management.

  9. Airway malacia in children with achondroplasia.

    Science.gov (United States)

    Dessoffy, Kimberly E; Modaff, Peggy; Pauli, Richard M

    2014-02-01

    This study was undertaken to assess the frequency of airway malacia in infants and young children with achondroplasia, a population well known to be at risk for a variety of respiratory problems. We also wished to evaluate what, if any, contribution airway malacia makes to the complex respiratory issues that may be present in those with achondroplasia. Retrospective chart review of all infants and young children with achondroplasia who were assessed through the Midwest Regional Bone Dysplasia Clinics from 1985 through 2012 (n = 236) was completed. Records of comprehensive clinical examinations, polysomnographic assessments, and airway visualization were reviewed and abstracted using a data collection form. Analyses were completed comparing the group with and those without evidence for airway malacia. Thirteen of 236 patients (5.5%) were found to have airway malacia. Most of those affected had lower airway involvement (9/13). The presence of airway malacia was correlated with an increased occurrence of obstructive sleep apnea as well as need for oxygen supplementation, airway surgeries and tracheostomy placement. Although estimates of the frequency of airway malacia in the general population are limited, its frequency in children with achondroplasia appears to be much higher than any published general population estimate. The presence of airway malacia appears to confound other breathing abnormalities in this population and results in the need for more invasive airway treatments. © 2013 Wiley Periodicals, Inc.

  10. Relationship between airway pathophysiology and airway inflammation in older asthmatics

    DEFF Research Database (Denmark)

    Porsbjerg, Celeste M; Gibson, Peter G; Pretto, Jeffrey J

    2013-01-01

    -dose ratio (%fall in forced expiratory volume in 1 s (FEV1 )/mg saline). Airway closure was assessed during bronchoconstriction percent change in forced vital capacity (FVC)/percent change in FEV1 (i.e. Closing Index). Airway inflammation was assessed by induced sputum and exhaled nitric oxide (eNO). RESULTS...

  11. RAGE: a new frontier in chronic airways disease.

    Science.gov (United States)

    Sukkar, Maria B; Ullah, Md Ashik; Gan, Wan Jun; Wark, Peter A B; Chung, Kian Fan; Hughes, J Margaret; Armour, Carol L; Phipps, Simon

    2012-11-01

    Asthma and chronic obstructive pulmonary disease (COPD) are heterogeneous inflammatory disorders of the respiratory tract characterized by airflow obstruction. It is now clear that the environmental factors that drive airway pathology in asthma and COPD, including allergens, viruses, ozone and cigarette smoke, activate innate immune receptors known as pattern-recognition receptors, either directly or indirectly by causing the release of endogenous ligands. Thus, there is now intense research activity focused around understanding the mechanisms by which pattern-recognition receptors sustain the airway inflammatory response, and how these mechanisms might be targeted therapeutically. One pattern-recognition receptor that has recently come to attention in chronic airways disease is the receptor for advanced glycation end products (RAGE). RAGE is a member of the immunoglobulin superfamily of cell surface receptors that recognizes pathogen- and host-derived endogenous ligands to initiate the immune response to tissue injury, infection and inflammation. Although the role of RAGE in lung physiology and pathophysiology is not well understood, recent genome-wide association studies have linked RAGE gene polymorphisms with airflow obstruction. In addition, accumulating data from animal and clinical investigations reveal increased expression of RAGE and its ligands, together with reduced expression of soluble RAGE, an endogenous inhibitor of RAGE signalling, in chronic airways disease. In this review, we discuss recent studies of the ligand-RAGE axis in asthma and COPD, highlight important areas for future research and discuss how this axis might potentially be harnessed for therapeutic benefit in these conditions. © 2012 The Authors. British Journal of Pharmacology © 2012 The British Pharmacological Society.

  12. Bronchial lumen is the safer route for an airway exchange catheter in double-lumen tube replacement: preventable complication in airway management for thoracic surgery.

    Science.gov (United States)

    Wu, Hsiang-Ling; Tai, Ying-Hsuan; Wei, Ling-Fang; Cheng, Hung-Wei; Ho, Chiu-Ming

    2017-10-01

    There is no current consensus on which lumen an airway exchange catheter (AEC) should be passed through in double-lumen endotracheal tube (DLT) to exchange for a single-lumen endotracheal tube (SLT) after thoracic surgery. We report an unusual case to provide possible solution on this issue. A 71-year-old man with lung adenocarcinoma had an event of a broken exchange catheter used during a DLT replacement with a SLT, after a video-assisted thoracic surgery. The exchange catheter was impinged at the distal tracheal lumen and snapped during manipulation. All three segments of the catheter were retrieved without further airway compromises. Placement of airway tube exchanger into the tracheal lumen of double-lumen tube is a potential contributing factor of the unusual complication. We suggest an exchange catheter be inserted into the bronchial lumen in optimal depth with the adjunct of video laryngoscope, as the safe method for double-lumen tube exchange.

  13. Pulmonary haemodynamics in coal workers pneumoconiosis and non-plneumoconiotic patients with chronic obstructive airways disease

    Energy Technology Data Exchange (ETDEWEB)

    Bugalho de Almeida, A A; Schott, D; Zimmermann, I; Ulmer, W T

    1980-01-01

    The pulmonary haemodynamics of 22 patients with advanced forms of coal workers pneumoconiosis and chronic obstructive airways disease, and 24 patients with advanced forms of COAD without pneumoconiosis were studied. The results obtained permitted a haemodynamic distinction between these two groups of patients. The differences, at rest and during 25 W exercise, are discussed.

  14. Antithyroid drug-induced agranulocytosis complicated by pneumococcal sepsis and upper airway obstruction.

    Science.gov (United States)

    Ishimaru, Naoto; Ohnishi, Hisashi; Nishiuma, Teruaki; Doukuni, Ryota; Umezawa, Kanoko; Oozone, Sachiko; Kuramoto, Emi; Yoshimura, Sho; Kinami, Saori

    2013-01-01

    Streptococcus pneumoniae is a rare pathogen of sepsis in patients with antithyroid drug-induced agranulocytosis. We herein describe a case of antithyroid drug-induced agranulocytosis complicated by pneumococcal sepsis and upper airway obstruction. A 27-year-old woman who was previously prescribed methimazole for nine months presented with a four-day history of a sore throat. She nearly choked and was diagnosed with febrile agranulocytosis. She was successfully treated with intubation, intravenous antibiotics and granulocyte colony-stimulating factor. Her blood cultures yielded S. pneumoniae. Emergency airway management, treatment of sepsis and the administration of granulocyte colony-stimulating factor can improve the clinical course of antithyroid drug-induced pneumococcal sepsis in patients with airway obstruction.

  15. A new option in airway management: evaluation of the TotalTrack ...

    African Journals Online (AJOL)

    the basic performance of the device, this study assessed the. TotalTrack® .... A 12 French gauge nasogastric tube was then inserted through the specific ..... Cook TM. Novel airway devices: spoilt for choice? Anaesthesia. 2003;58(2):107–10. 3.

  16. Recent advances in the management of obstructive sleep apnea: The dental perspective.

    Science.gov (United States)

    Prabhat, K C; Goyal, Lata; Bey, Afshan; Maheshwari, Sandhya

    2012-07-01

    Obstructive sleep apnea (OSA) is common in adult population. OSA shows detrimental effects on health, neuropsychological development, quality-of-life, and economic potential and now it is recognized as a public health problem. Despite the availability of expanded therapeutic options, polysomnography and nasal continuous positive airway pressure (CPAP) are the gold standards for the diagnosis and treatment for OSA. Recently, American Academy of Sleep Medicine has recommended oral appliances for OSA. Hence the therapeutic interventions that are directed at the site of airway obstruction in the maxillofacial region are within the scope of dentistry. Treatment of OSA can improve vitality, social and daytime functioning, family life and mental health of a person and hence the quality-of-life. Obesity is the main predisposing factor for OSA. Other than obesity, craniofacial abnormalities such as micrognathia and retrognathia, age, ethnic background and genetic predisposition, consumption of alcohol, smoking, and sedatives may also predispose to OSA. Treatment modalities for OSA are behavior modification, diet and medication, CPAP devices, surgical (maxillo-mandibular advancement surgery), and oral appliances. Treatment of a patient with OSA not only improves the physical health of the patients but also the mental and social well-being.

  17. Microsoft System Center Configuration Manager advanced deployment

    CERN Document Server

    Coupland, Martyn

    2014-01-01

    If you are an experienced Configuration Manager administrator looking to advance your career or get more from your current environment, then this book is ideal for you. Prior experience of deploying and managing a Configuration Manager site would be helpful in following the examples throughout this book.

  18. Vessel-guided airway tree segmentation

    DEFF Research Database (Denmark)

    Lo, Pechin Chien Pau; Sporring, Jon; Ashraf, Haseem

    2010-01-01

    This paper presents a method for airway tree segmentation that uses a combination of a trained airway appearance model, vessel and airway orientation information, and region growing. We propose a voxel classification approach for the appearance model, which uses a classifier that is trained to di...

  19. Critical Airway Team: A Retrospective Study of an Airway Response System in a Pediatric Hospital.

    Science.gov (United States)

    Sterrett, Emily C; Myer, Charles M; Oehler, Jennifer; Das, Bobby; Kerrey, Benjamin T

    2017-12-01

    Objective Study the performance of a pediatric critical airway response team. Study Design Case series with chart review. Setting Freestanding academic children's hospital. Subjects and Methods A structured review of the electronic medical record was conducted for all activations of the critical airway team. Characteristics of the activations and patients are reported using descriptive statistics. Activation of the critical airway team occurred 196 times in 46 months (March 2012 to December 2015); complete data were available for 162 activations (83%). For 49 activations (30%), patients had diagnoses associated with difficult intubation; 45 (28%) had a history of difficult laryngoscopy. Results Activation occurred at least 4 times per month on average (vs 3 per month for hospital-wide codes). The most common reasons for team activation were anticipated difficult intubation (45%) or failed intubation attempt (20%). For 79% of activations, the team performed an airway procedure, most commonly direct laryngoscopy and tracheal intubation. Bronchoscopy was performed in 47% of activations. Surgical airway rescue was attempted 4 times. Cardiopulmonary resuscitation occurred in 41 activations (25%). Twenty-nine patients died during or following team activation (18%), including 10 deaths associated with the critical airway event. Conclusion Critical airway team activation occurred at least once per week on average. Direct laryngoscopy, tracheal intubation, and bronchoscopic procedures were performed frequently; surgical airway rescue was rare. Most patients had existing risk factors for difficult intubation. Given our rate of serious morbidity and mortality, primary prevention of critical airway events will be a focus of future efforts.

  20. "COMPARISON OF HEMODYNAMIC CHANGES AFTER INSERTION OF LARYNGEAL MASK AIRWAY, FACEMASK AND ENDOTRACHEAL INTUBATION"

    Directory of Open Access Journals (Sweden)

    K. Montazari

    2004-11-01

    Full Text Available Hemodynamic changes are major hazards of general anesthesia and are probably generated by direct laryngoscopy and endotracheal intubation. We designed this prospective randomised study to assess the cardiovascular changes after either laryngeal mask airway (LMA, face mask (FM or endotracheal tube (ETT insertion in the airway management of adult patients anesthetised with nitrous oxide and halothane. A total of 195 healthy normotensive adult patients with normal airways were randomly assigned to one of the three groups according to their airway management (n= 65 each for transurethral lithotripsy procedures. Heart rate (HR, systolic blood pressure (SBP, diastolic blood pressure (DBP and mean arterial blood pressure (MAP values were recorded before the induction of anesthesia, and then every three minutes until 30 min thereafter. The mean maximum HR and MAP values obtained during 15 and 30 minutes after insertion of LMA were 81±13, 73±8 bpm and 82±14, 79 ±11 mmHg, respectively which were significantly smaller compared to those with FM (84±12, 80±6 bpm and 86±10, 83±13 mmHg and ETT (96±8, 88±7 bpm and 91±11, 82±9 mmHg (P< 0.05. Direct stimulation of the trachea appears to be a major cause of the hemodynamic changes associated with tracheal intubation during general anesthesia, but why hemodynamic changes in LMA were smaller than facemask needs further study. In healthy normotensive patients the use of LMA for the airway management during general anesthesia results in a smaller cardiovascular change than FM and ETT.

  1. Difficult airway in a patient with Coffin-Siris syndrome.

    Science.gov (United States)

    Dimaculangan, D; Lokhandwala, B; Wlody, D; Gross, R

    2001-02-01

    We report on a patient with Coffin-Siris syndrome and consider a potential association between this condition and difficult intubation. Although this inherited condition is extremely rare, anesthesiologists should be aware of its existence and prepare for potential airway management problems whenever it is encountered.

  2. Complications of long-standing foreign body in the airway and their outcomes after endoscopic management: an experience of 20 cases.

    Science.gov (United States)

    Aggarwal, Satish Kumar; Sinha, Shandip Kumar; Ratan, Simmi K; Dhua, Anjan; Sethi, Gulshan Rai

    2015-01-01

    To study the outcomes after endoscopic treatment of chronic foreign bodies (FBs) in the airway. A retrospective study (2008-2013) of 20 cases with chronic airway FBs (>2 weeks) was done with emphasis on endoscopic management. All cases were initially evaluated by the pediatric pulmonologist. Flexible and rigid bronchoscopy was done for diagnosis and retrieval, respectively. The techniques of FB retrieval, problems encountered, and their solutions were analyzed. Follow-up flexible bronchoscopy was done in symptomatic cases. Outcomes were assessed in terms of successful removal of the FB, clinical recovery, lung expansion, and need for further procedures. Twenty cases (16 boys, 4 girls) with a mean age of 7 years had a chronic airway FB diagnosed on chest X-ray (n=6) and flexible bronchoscopy (n=14). Six cases had computed tomography evaluation. On rigid bronchoscopy, the FB was successfully retrieved in 16 cases. Two cases required open surgery for FB-induced tracheoesophageal fistula. One case required pneumonectomy because of a battery eroding into the lung parenchyma. One patient died. Of the 16 who had successful retrieval, 11 recovered with full lung expansion. Four recovered after additional bronchoscopic procedures (cauterization of granulation [n=2] and balloon dilatation of bronchial stenoses [n=2]). One case required pneumonectomy for persistent collapse despite multiple dilatations. An airway FB producing chronic respiratory symptoms may be missed because of lack of definite history of an inhaled FB. Clinical suspicion and flexible bronchoscopy are instrumental in diagnosis. Treatment is challenging because of chronicity-related complications and requires innovative ideas to make best use of the available urologic and bronchoscopic equipment. Addition of tracheotomy provides safety in difficult cases. Bronchoscopic removal leads to clinical and radiological recovery in most cases.

  3. PPARγ as a Potential Target to Treat Airway Mucus Hypersecretion in Chronic Airway Inflammatory Diseases

    Directory of Open Access Journals (Sweden)

    Yongchun Shen

    2012-01-01

    Full Text Available Airway mucus hypersecretion (AMH is a key pathophysiological feature of chronic airway inflammatory diseases such as bronchial asthma, cystic fibrosis, and chronic obstructive pulmonary disease. AMH contributes to the pathogenesis of chronic airway inflammatory diseases, and it is associated with reduced lung function and high rates of hospitalization and mortality. It has been suggested that AMH should be a target in the treatment of chronic airway inflammatory diseases. Recent evidence suggests that a key regulator of airway inflammation, hyperresponsiveness, and remodeling is peroxisome proliferator-activated receptor gamma (PPARγ, a ligand-activated transcription factor that regulates adipocyte differentiation and lipid metabolism. PPARγ is expressed in structural, immune, and inflammatory cells in the lung. PPARγ is involved in mucin production, and PPARγ agonists can inhibit mucin synthesis both in vitro and in vivo. These findings suggest that PPARγ is a novel target in the treatment of AMH and that further work on this transcription factor may lead to new therapies for chronic airway inflammatory diseases.

  4. Laryngeal debridement: an alternative treatment for a laryngopyocele presenting with severe airway obstruction.

    Science.gov (United States)

    Fraser, L; Pittore, B; Frampton, S; Brennan, P; Puxeddu, R

    2011-04-01

    The laryngocele is an abnormal saccular dilatation of the ventricle of Morgagni, which maintains its communication with the laryngeal vestibule. Three types of laryngoceles have been described: internal, external, and combined or mixed in relation to the position of the sac with respect to the thyrohyoid membrane. If the laryngocele becomes obstructed and infected it leads to the so-called laryngopyocele which, although a rare disease (8% of laryngoceles), can become an emergency causing severe airway obstruction needing urgent management, even tracheostomy. An alternative method is presented of emergency management of an internal laryngopyocele causing severe airway obstruction using a laryngeal microdebrider and avoiding tracheostomy.

  5. The human airway epithelial basal cell transcriptome.

    Directory of Open Access Journals (Sweden)

    Neil R Hackett

    2011-05-01

    Full Text Available The human airway epithelium consists of 4 major cell types: ciliated, secretory, columnar and basal cells. During natural turnover and in response to injury, the airway basal cells function as stem/progenitor cells for the other airway cell types. The objective of this study is to better understand human airway epithelial basal cell biology by defining the gene expression signature of this cell population.Bronchial brushing was used to obtain airway epithelium from healthy nonsmokers. Microarrays were used to assess the transcriptome of basal cells purified from the airway epithelium in comparison to the transcriptome of the differentiated airway epithelium. This analysis identified the "human airway basal cell signature" as 1,161 unique genes with >5-fold higher expression level in basal cells compared to differentiated epithelium. The basal cell signature was suppressed when the basal cells differentiated into a ciliated airway epithelium in vitro. The basal cell signature displayed overlap with genes expressed in basal-like cells from other human tissues and with that of murine airway basal cells. Consistent with self-modulation as well as signaling to other airway cell types, the human airway basal cell signature was characterized by genes encoding extracellular matrix components, growth factors and growth factor receptors, including genes related to the EGF and VEGF pathways. Interestingly, while the basal cell signature overlaps that of basal-like cells of other organs, the human airway basal cell signature has features not previously associated with this cell type, including a unique pattern of genes encoding extracellular matrix components, G protein-coupled receptors, neuroactive ligands and receptors, and ion channels.The human airway epithelial basal cell signature identified in the present study provides novel insights into the molecular phenotype and biology of the stem/progenitor cells of the human airway epithelium.

  6. Difficult airway equipment in departments of emergency medicine in Ireland: results of a national survey.

    LENUS (Irish Health Repository)

    Walsh, K

    2012-02-03

    BACKGROUND AND OBJECTIVE: Adverse effects associated with difficult airway management can be catastrophic and include death, brain injury and myocardial injury. Closed-malpractice claims have shown prolonged and persistent attempts at endotracheal intubation to be the most common situation leading to disastrous respiratory events. To date, there has been no evaluation of the types of difficult airway equipment currently available in Irish departments of emergency medicine. The objective of this survey was to identify the difficult airway equipment available in Irish departments of emergency medicine. METHODS: Departments of emergency medicine in the Republic of Ireland with at least one dedicated Emergency Medicine consultant were surveyed via telephone. RESULTS: All of the departments contacted held at least one alternative device on site for both ventilation and intubation. The most common alternative ventilation device was the laryngeal mask airway (89%). The most common alternative intubating device was the surgical airway device (100%). CONCLUSIONS: Irish departments of emergency medicine compare well with those in the UK and USA, when surveyed concerning difficult airway equipment. However, we believe that this situation could be further improved by training inexperienced healthcare providers in the use of the laryngeal mask airway and intubating laryngeal mask airway, by placing greater emphasis on the ready availability of capnography and by the increased use of portable difficult airway storage units.

  7. How Symmetrical Assumptions Advance Strategic Management Research

    DEFF Research Database (Denmark)

    Foss, Nicolai Juul; Hallberg, Hallberg

    2014-01-01

    We develop the case for symmetrical assumptions in strategic management theory. Assumptional symmetry obtains when assumptions made about certain actors and their interactions in one of the application domains of a theory are also made about this set of actors and their interactions in other...... application domains of the theory. We argue that assumptional symmetry leads to theoretical advancement by promoting the development of theory with greater falsifiability and stronger ontological grounding. Thus, strategic management theory may be advanced by systematically searching for asymmetrical...

  8. Management of patients with advanced prostate cancer

    DEFF Research Database (Denmark)

    Gillessen, S; Omlin, A; Attard, G

    2015-01-01

    The first St Gallen Advanced Prostate Cancer Consensus Conference (APCCC) Expert Panel identified and reviewed the available evidence for the ten most important areas of controversy in advanced prostate cancer (APC) management. The successful registration of several drugs for castration......-resistant prostate cancer and the recent studies of chemo-hormonal therapy in men with castration-naïve prostate cancer have led to considerable uncertainty as to the best treatment choices, sequence of treatment options and appropriate patient selection. Management recommendations based on expert opinion...

  9. [Airway clearance techniques in chronic obstructive pulmonary syndrome : 2011 update].

    Science.gov (United States)

    Opdekamp, C

    2011-09-01

    For many years the airway clearance techniques used in chest physical therapy were assimilated with the singular technique of postural drainage, percussions and vibrations. However the side effects and counter indications and the lack of scientific proof regarding this technique have forced reflection and development of other techniques more comfortable and without deleterious effects. If all these techniques show a high efficiency in terms of improved mucociliary clearance, the literature is unanimous on how little effect these techniques have in the short and the long-term with regards to lung function and arterial blood gases. In view of the scientific literature, it is clear that the airway clearance techniques don't have the same recognition concerning their efficiency in all obstructive pulmonary diseases. As the cornerstone in the management of cystic fibrosis, the efficiency of the bronchial hygiene techniques are in general poorly documented in the management of the non-cystic fibrosis bronchiectasis, bronchitis or emphysema. The use of the chest physical therapy seems more to do with the interpretation of the imagery and symptomatology. The airway clearance techniques should be individualised according to symptoms, the amount of expectorated mucus and the objectives signs of secretions retention or subjective signs of difficulty expectorating secretions with progression of the disease.

  10. Mediators on human airway smooth muscle.

    Science.gov (United States)

    Armour, C; Johnson, P; Anticevich, S; Ammit, A; McKay, K; Hughes, M; Black, J

    1997-01-01

    1. Bronchial hyperresponsiveness in asthma may be due to several abnormalities, but must include alterations in the airway smooth muscle responsiveness and/or volume. 2. Increased responsiveness of airway smooth muscle in vitro can be induced by certain inflammatory cell products and by induction of sensitization (atopy). 3. Increased airway smooth muscle growth can also be induced by inflammatory cell products and atopic serum. 4. Mast cell numbers are increased in the airways of asthmatics and, in our studies, in airway smooth muscle that is sensitized and hyperresponsive. 5. We propose that there is a relationship between mast cells and airway smooth muscle cells which, once an allergic process has been initiated, results in the development of critical features in the lungs in asthma.

  11. Lack of national consensus in preoperative airway assessment

    DEFF Research Database (Denmark)

    Nørskov, Anders Kehlet; Rosenstock, Charlotte Vallentin; Lundstrøm, Lars Hyldborg

    2016-01-01

    : 77.3-99.2%), history of airway management difficulties (85.7%, 95% CI: 65.4-95.0%), ability to prognath (81.0%, 95% CI: 60.0-92.3%) and neck mobility (81.0%, 95% CI: 60.0-92.3%) were the main predictors registered. CONCLUSION: We found considerable inter-departmental variance in the standards...

  12. Mechanical interactions between adjacent airways in the lung.

    Science.gov (United States)

    Ma, Baoshun; Bates, Jason H T

    2014-03-15

    The forces of mechanical interdependence between the airways and the parenchyma in the lung are powerful modulators of airways responsiveness. Little is known, however, about the extent to which adjacent airways affect each other's ability to narrow due to distortional forces generated within the intervening parenchyma. We developed a two-dimensional computational model of two airways embedded in parenchyma. The parenchyma itself was modeled in three ways: 1) as a network of hexagonally arranged springs, 2) as a network of triangularly arranged springs, and 3) as an elastic continuum. In all cases, we determined how the narrowing of one airway was affected when the other airway was relaxed vs. when it narrowed to the same extent as the first airway. For the continuum and triangular network models, interactions between airways were negligible unless the airways lay within about two relaxed diameters of each other, but even at this distance the interactions were small. By contrast, the hexagonal spring network model predicted that airway-airway interactions mediated by the parenchyma can be substantial for any degree of airway separation at intermediate values of airway contraction forces. Evidence to date suggests that the parenchyma may be better represented by the continuum model, which suggests that the parenchyma does not mediate significant interactions between narrowing airways.

  13. Comparative Assessment of Three Approaches of Teaching Nonmedically Trained Persons in the Handling of Supraglottic Airways: A Randomized Controlled Trial.

    Science.gov (United States)

    Hensel, Mario; Schmidbauer, Willi; Benker, Michael; Schmieder, Paula; Kerner, Thoralf

    2017-03-01

    The use of supraglottic airways has been recommended in combat trauma airway management. To ensure an adequate airway management on the battlefield, suitable training concepts are sought to efficiently teach as many soldiers as possible. Our aim was to compare three approaches of teaching laypersons in the handling of supraglottic airways in a mannequin model. In this prospective randomized blinded study, 285 military service men without any medical background were divided into three groups and trained in the use of the Laryngeal Mask Airway Supreme (LMA) and the Laryngeal Tube Disposable (LT-D). The first group received a theoretical lecture, the second group was shown an instruction video, and the third group underwent a practical training. Immediately after instruction participants were asked to place the supraglottic airway and ventilate the mannequin within 60 seconds. The entire test was repeated 3 months later. Test results were evaluated with regard to success rate, insertion time, ability to judge the correct placement, and degree of difficulty. Practical training showed the highest success rate when placing supraglottic airways immediately after the instruction (lecture: 68%, video: 74%, training: 94%); (training vs. lecture and training vs. video, p training: 78%); (training vs. lecture, p = 0.019 and training vs. video, p = 0.025). Immediately after the instruction practical training was also superior in terms of insertion time, ability to judge the correct placement, and the self-rated degree of difficulty (p place a supraglottic airway immediately following minimal instruction and after 3 months as well. Study participants achieved the best results after practical training followed by video presentation and finally lecture regardless of the airway device used. There are two possible reasons why practical training is the superior method. Firstly, the success is tied to more time spent with the learners. Secondly, practical training seems to be the best

  14. Development of advanced spent fuel management process. System analysis of advanced spent fuel management process

    International Nuclear Information System (INIS)

    Ro, S.G.; Kang, D.S.; Seo, C.S.; Lee, H.H.; Shin, Y.J.; Park, S.W.

    1999-03-01

    The system analysis of an advanced spent fuel management process to establish a non-proliferation model for the long-term spent fuel management is performed by comparing the several dry processes, such as a salt transport process, a lithium process, the IFR process developed in America, and DDP developed in Russia. In our system analysis, the non-proliferation concept is focused on the separation factor between uranium and plutonium and decontamination factors of products in each process, and the non-proliferation model for the long-term spent fuel management has finally been introduced. (Author). 29 refs., 17 tabs., 12 figs

  15. Pediatric advanced life support and sedation of pediatric dental patients.

    Science.gov (United States)

    Kim, Jongbin

    2016-03-01

    Programs provided by the Korea Association of Cardiopulmonary Resuscitation include Basic Life Support (BLS), Advanced Cardiac Life Support (ACLS), Pediatric Advanced Life Support (PALS), and Korean Advanced Life Support (KALS). However, programs pertinent to dental care are lacking. Since 2015, related organizations have been attempting to develop a Dental Advanced Life Support (DALS) program, which can meet the needs of the dental environment. Generally, for initial management of emergency situations, basic life support is most important. However, emergencies in young children mostly involve breathing. Therefore, physicians who treat pediatric dental patients should learn PALS. It is necessary for the physician to regularly renew training every two years to be able to immediately implement professional skills in emergency situations. In order to manage emergency situations in the pediatric dental clinic, respiratory support is most important. Therefore, mastering professional PALS, which includes respiratory care and core cases, particularly upper airway obstruction and respiratory depression caused by a respiratory control problem, would be highly desirable for a physician who treats pediatric dental patients. Regular training and renewal training every two years is absolutely necessary to be able to immediately implement professional skills in emergency situations.

  16. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... specialized CF care and a range of treatment options. Airway Clearance Active Cycle of Breathing Technique Airway ... on their own. Share Facebook Twitter Email More options Print Share Facebook Twitter Email Print Permalink All ...

  17. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... Physical Therapy Coughing and Huffing High-Frequency Chest Wall Oscillation Positive Expiratory Pressure Clinical Trials Clinical Trials ... clapping) or vibration to loosen mucus from airway walls. See how different airway clearance techniques work to ...

  18. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... D Structure Consortium CFTR Folding Consortium Epithelial Stem Cell Consortium Mucociliary Clearance Consortium SUCCESS WITH THERAPIES RESEARCH ... clapping) or vibration to loosen mucus from airway walls. See how different airway clearance techniques work to ...

  19. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... ACTs involve coughing or huffing . Many of them use percussion (clapping) or vibration to loosen mucus from airway walls. See how different airway clearance techniques work to help you clear the thick, sticky mucus ...

  20. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... today. ANNUAL FUND Become a Corporate Supporter Cause Marketing Make a Charitable Gift Our Corporate Supporters Workplace ... Clearance Airway Clearance Techniques (ACTs) There are different ways to clear your airways. Most are easy to ...

  1. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... a range of treatment options. Airway Clearance Active Cycle of Breathing Technique Airway Clearance Techniques Autogenic Drainage ... LEGACY GIFT Sponsor a Participant CF Climb CF Cycle for Life Great Strides Xtreme Hike Participate In ...

  2. SLOWLY ADAPTING SENSORY UNITS HAVE MORE RECEPTORS IN LARGE AIRWAYS THAN IN SMALL AIRWAYS IN RABBITS

    Directory of Open Access Journals (Sweden)

    Jun Liu

    2016-12-01

    Full Text Available Sensory units of pulmonary slowly adapting receptors (SARs are more active in large airways than in small airways. However, there is no explanation for this phenomenon. Although sensory structures in large airways resemble those in small airways, they are bigger and more complex. Possibly, a larger receptor provides greater surface area for depolarization, and thus has a lower activating threshold and/or a higher sensitivity to stretch, leading to more nerve electrical activities. Recently, a single sensory unit has been reported to contain multiple receptors. Therefore, sensory units in large airways may contain more SARs, which may contribute to high activities. To test this hypothesis, we used a double staining technique to identify sensory receptor sizes. We labeled the sensory structure with Na+/K+-ATPase antibodies and the myelin sheath with myelin basic protein (MBP antibodies. A SAR can be defined as the end formation beyond MBP labeling. Thus, we are able to compare sizes of sensory structures and SARs in large (trachea and bronchi vs small (bronchioles 0.05. However, the sensory structure contains more SARs in large airways than in small airways (9.6±0.6 vs 3.6±0.3; P<0.0001. Thus, our data support the hypothesis that greater numbers of SARs in sensory units of large airways may contribute to higher activities.

  3. Out-of-Hospital Surgical Airway Management: Does Scope of Practice Equal Actual Practice?

    Directory of Open Access Journals (Sweden)

    Molly Furin

    2016-05-01

    Full Text Available Introduction: Pennsylvania, among other states, includes surgical airway management, or cricothyrotomy, within the paramedic scope of practice. However, there is scant literature that evaluates paramedic perception of clinical competency in cricothyrotomy. The goal of this project is to assess clinical exposure, education and self-perceived competency of ground paramedics in cricothyrotomy. Methods: Eighty-six paramedics employed by four ground emergency medical services agencies completed a 22-question written survey that assessed surgical airway attempts, training, skills verification, and perceptions about procedural competency. Descriptive statistics were used to evaluate responses. Results: Only 20% (17/86, 95% CI [11-28%] of paramedics had attempted cricothyrotomy, most (13/17 or 76%, 95% CI [53-90%] of whom had greater than 10 years experience. Most subjects (63/86 or 73%, 95% CI [64-82%] did not reply that they are well-trained to perform cricothyrotomy and less than half (34/86 or 40%, 95% CI [30-50%] felt they could correctly perform cricothyrotomy on their first attempt. Among subjects with five or more years of experience, 39/70 (56%, 95% CI [44-68%] reported 0-1 hours per year of practical cricothyrotomy training within the last five years. Half of the subjects who were able to recall (40/80, 50% 95% CI [39-61%] reported having proficiency verification for cricothyrotomy within the past five years. Conclusion: Paramedics surveyed indicated that cricothyrotomy is rarely performed, even among those with years of experience. Many paramedics felt that their training in this area is inadequate and did not feel confident to perform the procedure. Further study to determine whether to modify paramedic scope of practice and/or to develop improved educational and testing methods is warranted.

  4. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... Make a Charitable Gift Our Corporate Supporters Workplace Engagement DONATE YOUR PROPERTY eCards for a Cure About ... airway walls. See how different airway clearance techniques work to help you clear the thick, sticky mucus ...

  5. Comparison of ProSeal laryngeal mask airway (PLMA with cuffed and uncuffed endotracheal tubes in infants

    Directory of Open Access Journals (Sweden)

    Eyyup Sabri Ozden

    2016-11-01

    Full Text Available We aimed to compare cuffed and uncuffed endotracheal tubes (ETTs with ProSealTM laryngeal mask airway (PLMA in terms of airway security and extubation, starting out from the hypothesis that PLMA will provide alternative airway safety to the endotracheal tubes, and that airway complications will be less observed. After obtaining approval from the local Ethics Committee and parental informed consent, 120 pediatric patients 1-24 months old, American Society of Anesthesiologists physical status I-II, requiring general anesthesia for elective lower abdominal surgery, were randomized into PLMA (Group P, n = 40, cuffed ETT (Group C, n = 40, and uncuffed ETT (Group UC, n = 40 groups. The number of intubation or PLMA insertion attempts was recorded. Each patient’s epigastrium was auscultated for gastric insufflation, leak volumes and air leak fractions (leak volume/inspiratory volume were recorded. Post-operative adverse events related to airway management were also followed up during the first post-operative hour. Demographic and surgical data were similar among the groups. There were significantly fewer airway manipulations in the Group P than in the other groups (p < 0.01, and leak volume and air leak fractions were greater in the Group UC than in the other two groups (p < 0.01. Laryngospasm was significantly lower in the Group P during extubation and within the first minute of post-extubation than in the other groups (p < 0.01. Based on this study, PLMA may be a good alternative to cuffed and uncuffed ETTs for airway management of infants due to the ease of manipulation and lower incidence of laryngospasm.

  6. Raising awareness of upper airway diseases: Overview of management and prevention strategies

    Directory of Open Access Journals (Sweden)

    De-yun WANG

    2017-11-01

    Full Text Available The nose together with the paranasal sinuses is the main part of the upper airway, which is lined with pseudostratified columnar ciliated epithelium. There are several important physiological functions such as conditioning and filtration of the inspired air and the provision of end organ for the sense of smell. Besides the nose also fulfills a physical and immunological barrier as the nasal epithelium is the first site of interaction between the host tissue and foreign invaders, such as viruses, bacteria, fungi, allergens, and harmful particulates. Hence, nasal diseases such as rhinitis (allergic and infectious and rhinosinusitis are the most common health problems worldwide, affecting millions of people of all ages. In the past 10 to 20 years, our understanding of the immuno-pathophysiological mechanisms underlying the common nasal diseases has been significantly enhanced by in vivo and in vitro studies. This allows the development of novel therapeutic strategies designed to improve the physiological and immune defense functions of the nose, as well as for other common airway diseases. Since the dynamically external changes of atmosphere, environment (pollution and susceptible population, we are now facing some of new features on epidemiology and the types of upper airway diseases that require us to in-deep study the diseases through basic and clinical researches, so as to further understand the prevention, diagnosis and treatment of the diseases. DOI: 10.118555/j.issn.0577-7402.2017.10.01

  7. The airway microbiota in early cystic fibrosis lung disease.

    Science.gov (United States)

    Frayman, Katherine B; Armstrong, David S; Grimwood, Keith; Ranganathan, Sarath C

    2017-11-01

    Infection plays a critical role in the pathogenesis of cystic fibrosis (CF) lung disease. Over the past two decades, the application of molecular and extended culture-based techniques to microbial analysis has changed our understanding of the lungs in both health and disease. CF lung disease is a polymicrobial disorder, with obligate and facultative anaerobes recovered alongside traditional pathogens in varying proportions, with some differences observed to correlate with disease stage. While healthy lungs are not sterile, differences between the lower airway microbiota of individuals with CF and disease-controls are already apparent in childhood. Understanding the evolution of the CF airway microbiota, and its relationship with clinical treatments and outcome at each disease stage, will improve our understanding of the pathogenesis of CF lung disease and potentially inform clinical management. This review summarizes current knowledge of the early development of the respiratory microbiota in healthy children and then discusses what is known about the airway microbiota in individuals with CF, including how it evolves over time and where future research priorities lie. © 2017 Wiley Periodicals, Inc.

  8. Airway, responsiveness and inflammation in adolescent elite swimmers

    DEFF Research Database (Denmark)

    Pedersen, Lise; Lund, T.K.; Barnes, P.J.

    2008-01-01

    Background: Whereas increased airway hyperresponsiveness (AHR) and airway inflammation are well documented in adult elite athletes, it remains uncertain whether the same airway changes are present in adolescents involved in elite sport. Objective: To investigate airway responsiveness and airway....... There was no difference in FeNO, cellular composition of sputum, airway reactivity, or prevalence of having AHR to methacholine and/or EVH between swimmers with and without respiratory symptoms. Conclusion: Adolescent elite swimmers do not have significant signs of airway damage after only a few years of intense training...... and competition. This leads us to believe that elite swimmers do not have particularly susceptible airways when they take up competitive swimming when young, but that they develop respiratory symptoms, airway inflammation, and AHR during their swimming careers Udgivelsesdato: 2008/8...

  9. The operative cooperation and nursing in performing airway stent placement under DSA guidance for treating airway stenosis

    International Nuclear Information System (INIS)

    Yan Baojun; Wu Gang; Han Xinwei; Wang Nan; Shi Jin; Si Wenfeng; Wang Kai; Su Ning; Liu Jia; Hai Dandan

    2011-01-01

    Objective: To discuss the key points of the nursing care for effectively performing airway stent placement under DSA monitoring for airway stenosis. Methods: Corresponding nursing care measures were carried out for 118 patients with airway stenosis who were treated with airway stent placement. Results: The symptom of dyspnea was markedly relieved after stent implantation in all 118 patients with airway stenosis. Conclusion: To strengthen the preoperative psychological nursing and operative posture training, to make close postoperative watch on vital signs, to adopt some prevention measures for possible complications and to give necessary medical advises at the time of discharge are very helpful for patient's recovery after the surgery. (authors)

  10. Analysis of airways in computed tomography

    DEFF Research Database (Denmark)

    Petersen, Jens

    Chronic Obstructive Pulmonary Disease (COPD) is major cause of death and disability world-wide. It affects lung function through destruction of lung tissue known as emphysema and inflammation of airways, leading to thickened airway walls and narrowed airway lumen. Computed Tomography (CT) imaging...

  11. A 'Good' muscle in a 'Bad' environment: the importance of airway smooth muscle force adaptation to airway hyperresponsiveness.

    Science.gov (United States)

    Bossé, Ynuk; Chapman, David G; Paré, Peter D; King, Gregory G; Salome, Cheryl M

    2011-12-15

    Asthma is characterized by airway inflammation, with a consequent increase in spasmogens, and exaggerated airway narrowing in response to stimuli, termed airway hyperresponsiveness (AHR). The nature of any relationship between inflammation and AHR is less clear. Recent ex vivo data has suggested a novel mechanism by which inflammation may lead to AHR, in which increased basal ASM-tone, due to the presence of spasmogens in the airways, may "strengthen" the ASM and ultimately lead to exaggerated airway narrowing. This phenomenon was termed "force adaptation" [Bossé, Y., Chin, L.Y., Paré, P.D., Seow, C.Y., 2009. Adaptation of airway smooth muscle to basal tone: relevance to airway hyperresponsiveness. Am. J. Respir. Cell Mol. Biol. 40, 13-18]. However, it is unknown whether the magnitude of the effect of force adaptation ex vivo could contribute to exaggerated airway narrowing in vivo. Our aim was to utilize a computational model of ASM shortening in order to quantify the potential effect of force adaptation on airway narrowing when all other mechanical factors were kept constant. The shortening in the model is dictated by a balance between physiological loads and ASM force-generating capacity at different lengths. The results suggest that the magnitude of the effect of force adaptation on ASM shortening would lead to substantially more airway narrowing during bronchial challenge at any given airway generation. We speculate that the increased basal ASM-tone in asthma, due to the presence of inflammation-derived spasmogens, produces an increase in the force-generating capacity of ASM, predisposing to AHR during subsequent challenge. Copyright © 2011 Elsevier B.V. All rights reserved.

  12. Pediatric cardiac catheterization procedure with dexmedetomidine sedation: Radiographic airway patency assessment

    Directory of Open Access Journals (Sweden)

    Ashwini Thimmarayappa

    2015-01-01

    Full Text Available Aims: The aim of the study was to measure airway patency objectively during dexmedetomidine sedation under radiographic guidance in spontaneously breathing pediatric patients scheduled for cardiac catheterization procedures. Subjects and Methods: Thirty-five patients in the age group 5-10 years scheduled for cardiac catheterization procedures were enrolled. All study patients were given loading dose of dexmedetomidine at 1 mg/kg/min for 10 min and then maintenance dose of 1.5 mg/kg/h. Radiographic airway patency was assessed at the start of infusion (0 min and after 30 min. Antero-posterior (AP diameters were measured manually at the nasopharyngeal and retroglossal levels. Dynamic change in airway between inspiration and expiration was considered a measure of airway collapsibility. Patients were monitored for hemodynamics, recovery time and complications. Statistical Analysis: Student paired t-test was used for data analysis. P < 0.05 was considered significant. Results: Minimum and maximum AP diameters were compared at 0 and 30 min. Nasopharyngeal level showed significant reduction in the minimum (6.27 ± 1.09 vs. 4.26 ± 1.03, P < 0.0001 and maximum (6.51 ± 1.14 vs. 5.99 ± 1.03, P < 0.0001 diameters. Similarly retroglossal level showed significant reduction in the minimum (6.98 ± 1.09 vs. 5.27 ± 1.15, P < 0.0001 and maximum (7.49 ± 1.22 vs. 6.92 ± 1.12, P < 0.0003 diameters. The degree of collapsibility was greater at 30 min than baseline ( P < 0.0001. There was a significant decrease in heart rate ( P < 0.0001, and the average recovery time was 39.86 ± 12.22 min. Conclusion: Even though airway patency was maintained in all children sedated with dexmedetomidine, there were significant reductions in the upper airway dimensions measured, so all precautions to manage the airway failure should be taken.

  13. Endotracheal intubation in patients with difficult airway: Using laryngeal mask airway with bougie versus video laryngoscopy

    Directory of Open Access Journals (Sweden)

    Hesameddin Modir

    2017-01-01

    Full Text Available Airway management is essential for safe anesthesia and endotracheal intubation is the most important procedure by which critically ill patients can be better managed, especially if done quickly and successfully. This study aimed to compare the techniques of intubation through laryngeal mask airway (LMA using a bougie versus video laryngoscopy (VL regarding to intubation success and the quality of intubation indices in patients with difficult airways. This randomized clinical trial was performed on 96 patients aged 16–76 years with Mallampati class 3 or 4 who underwent elective surgery. Once the demographics were recorded, patients were randomly divided into two groups and the first group intubated with VL, and the second group intubated through laryngeal mask using a bougie. Then vital signs, arterial oxygen saturation, the time required for successful intubation, and ease of intubation were recorded. Here t-tests, chi-square, Fisher exact tests, and analysis of variance for repeated measurement were used to analyze the data in SPSS software. The overall success rates of intubation in VL and LMA groups were 46 (96% and 44 (92%, respectively. The mean duration of intubation for the LMA and VL groups was 18.70 ± 6.73 and 14.21 ± 4.14 seconds, respectively (P < 0.001. Moreover, visual analogue scale score for pain in throat was significantly lower in VL group than LMA (1.65 ± 0.76 vs. 1.33 ± 0.52. Moreover, easy intubation in bougie group was 50%, while the easy intubation in VL was 73% (P = 0.023. In addition, incidence of cough was 31% in the LMA with bougie group and 9% in VL group (P = 0.005. The VL technique is an easier method and has a shorter intubation time than LMA using bougie, and causes a lower incidence of coughing, laryngospasm in patients that need intubation. Moreover, cough and discomfort in the throat tend to be less in VL, and the LMA could be used as replacement of VL in hard situations.

  14. Airway structure and function in Eisenmenger's syndrome.

    Science.gov (United States)

    McKay, K O; Johnson, P R; Black, J L; Glanville, A R; Armour, C L

    1998-10-01

    The responsiveness of airways from patients with Eisenmenger's syndrome (n = 5) was compared with that in airways from organ donors (n = 10). Enhanced contractile responses to cholinergic stimulation were found in airways from patients with Eisenmenger's syndrome. The maximal responses to acetylcholine, carbachol, and parasympathetic nerve stimulation in airway tissue from these patients were 221%, 139%, and 152%, respectively, of the maximal responses obtained in donor tissue. Further, relaxation responses to isoproterenol and levocromakalim were absent (n = 2) or markedly impaired (n = 3) in airways from patients with Eisenmenger's syndrome. This attenuated relaxation response was nonspecific in that it was also absent after vasoactive intestinal peptide, sodium nitroprusside, papaverine, and electrical field application. These observations can most likely be explained by a decrease in intrinsic smooth muscle tone, as precontraction of airways revealed relaxation responses that were equivalent to those obtained in donor tissues. Morphometric analysis of tissues used for the functional studies revealed no differences in the airway dimensions (internal perimeter) or airway wall components (e.g., smooth muscle, cartilage) or total area to explain these observations. Although the mechanism for this observed decrease in intrinsic airway smooth muscle tone is not certain, it may be due to alteration in the substructure of the airway wall or, alternatively, may result from the continued release of depressant factors in the vicinity of the smooth muscle which permanently alters smooth muscle responsiveness.

  15. Control system design specification of advanced spent fuel management process units

    Energy Technology Data Exchange (ETDEWEB)

    Ahn, S. H.; Kim, S. H.; Yoon, J. S

    2003-06-01

    In this study, the design specifications of instrumentation and control system for advanced spent fuel management process units are presented. The advanced spent fuel management process consists of several process units such as slitting device, dry pulverizing/mixing device, metallizer, etc. In this study, the control and operation characteristics of the advanced spent fuel management mockup process devices and the process devices developed in 2001 and 2002 are analysed. Also, a integral processing system of the unit process control signals is proposed, which the operation efficiency is improved. And a redundant PLC control system is constructed which the reliability is improved. A control scheme is proposed for the time delayed systems compensating the control performance degradation caused by time delay. The control system design specification is presented for the advanced spent fuel management process units. This design specifications can be effectively used for the detail design of the advanced spent fuel management process.

  16. Anticholinergic treatment in airways diseases.

    LENUS (Irish Health Repository)

    Flynn, Robert A

    2009-10-01

    The prevalence of chronic airways diseases such as chronic obstructive pulmonary disease and asthma is increasing. They lead to symptoms such as a cough and shortness of breath, partially through bronchoconstriction. Inhaled anticholinergics are one of a number of treatments designed to treat bronchoconstriction in airways disease. Both short-acting and long-acting agents are now available and this review highlights their efficacy and adverse event profile in chronic airways diseases.

  17. Multiscale Vessel-guided Airway Tree Segmentation

    DEFF Research Database (Denmark)

    Lo, Pechin Chien Pau; Sporring, Jon; de Bruijne, Marleen

    2009-01-01

    This paper presents a method for airway tree segmentation that uses a combination of a trained airway appearance model, vessel and airway orientation information, and region growing. The method uses a voxel classification based appearance model, which involves the use of a classifier that is trai...

  18. Increased airway reactivity in a neonatal mouse model of Continuous Positive Airway Pressure (CPAP)

    OpenAIRE

    Mayer, Catherine A.; Martin, Richard J.; MacFarlane, Peter M.

    2015-01-01

    Background Continuous positive airway pressure (CPAP) is a primary form of respiratory support used in the intensive care of preterm infants, but its long-term effects on airway (AW) function are unknown. Methods We developed a neonatal mouse model of CPAP treatment to determine whether it modifies later AW reactivity. Un-anesthetized spontaneously breathing mice were fitted with a mask to deliver CPAP (6cmH2O, 3hrs/day) for 7 consecutive days starting at postnatal day 1. Airway reactivity to...

  19. Effect of airway acidosis and alkalosis on airway vascular smooth muscle responsiveness to albuterol.

    Science.gov (United States)

    Cancado, Jose E; Mendes, Eliana S; Arana, Johana; Horvath, Gabor; Monzon, Maria E; Salathe, Matthias; Wanner, Adam

    2015-04-02

    In vitro and animal experiments have shown that the transport and signaling of β2-adrenergic agonists are pH-sensitive. Inhaled albuterol, a hydrophilic β2-adrenergic agonist, is widely used for the treatment of obstructive airway diseases. Acute exacerbations of obstructive airway diseases can be associated with changes in ventilation leading to either respiratory acidosis or alkalosis thereby affecting albuterol responsiveness in the airway. The purpose of this study was to determine if airway pH has an effect on albuterol-induced vasodilation in the airway. Ten healthy volunteers performed the following respiratory maneuvers: quiet breathing, hypocapnic hyperventilation, hypercapnic hyperventilation, and eucapnic hyperventilation (to dissociate the effect of pH from the effect of ventilation). During these breathing maneuvers, exhaled breath condensate (EBC) pH and airway blood flow response to inhaled albuterol (ΔQ̇aw) were assessed. Mean ± SE EBC pH (units) and ΔQ̇aw (μl.min(-1).mL(-1)) were 6.4 ± 0.1 and 16.8 ± 1.9 during quiet breathing, 6.3 ± 0.1 and 14.5 ± 2.4 during eucapnic hyperventilation, 6.6 ± 0.2 and -0.2 ± 1.8 during hypocapnic hyperventilation (p = 0.02 and <0.01 vs. quiet breathing), and 5.9 ± 0.1 and 2.0 ± 1.5 during hypercapnic hyperventilation (p = 0.02 and <0.02 vs quiet breathing). Albuterol responsiveness in the airway as assessed by ΔQ̇aw is pH sensitive. The breathing maneuver associated with decreased and increased EBC pH both resulted in a decreased responsiveness independent of the level of ventilation. These findings suggest an attenuated response to hydrophilic β2-adrenergic agonists during airway disease exacerbations associated with changes in pH. Registered at clinicaltrials.gov: NCT01216748 .

  20. HEMODYNAMIC STATUS IN AIRWAY MANAGEMENT DURING GENERAL ANESTHESIA: COMPARISON OF THREE METHODS

    Directory of Open Access Journals (Sweden)

    K MONTAZERI

    2000-03-01

    Full Text Available Introduction. The laryngeal mask airway (LMA was recently introduced in general anesthesia as an alternative to the face mask or tracheal intubation for airway maintenance. Methods. The effects of LMA insertion, face mask or tracheal intubation on homodynamic status were studied in 195 normotensive patients who underwent elective transurethral lithotripsy (TUL. The patients were monitored with blood pressure measurement and pulse oximetry. Anesthesia was induced with sodium thiopental, succynilcholine and fentanyl and maintained with halothane, nitrous oxide and oxygen. Findings. The heart rate (HR and mean arterial pressure increased after LMA insertion. face mask or tracheal intubation, compared with baseline (P<0.05. The hemodynamic changes were significantly greater after tracheal intubation and face mask than after LMA insertion (P<0.05. Conclusion. We conclude that insertion of LMA is associated with less hemodynamic disturbances than face mask or tracheal intubation in normotensive patients undergoing elective operations.

  1. Advanced technologies applied to work management

    International Nuclear Information System (INIS)

    Aldrich, L.R.

    1993-01-01

    Commonwealth Edison Company subscribes to the dose optimization principle and has implemented reasonable efforts to maintain exposures to radiation as far below dose limits as practical consistent with the state of technology, the economics of improvements in relation to the state of technology and the economics of improvements in relation to the benefits to the public health and safety. In an effort to lower collective exposures, Commonwealth Edison Company has focused on improving performance in four key areas which have proven to contribute to lower personnel exposures - Management Controls, Work practices, Source Term Reduction and Technological Advancements. This paper focuses on the advanced technologies that the Commonwealth Edison Company has employed in the areas of work planning, work performance and work monitoring to manage our occupational dose control

  2. Motorcycle exhaust particles induce airway inflammation and airway hyperresponsiveness in BALB/C mice.

    Science.gov (United States)

    Lee, Chen-Chen; Liao, Jiunn-Wang; Kang, Jaw-Jou

    2004-06-01

    A number of large studies have reported that environmental pollutants from fossil fuel combustion can cause deleterious effects to the immune system, resulting in an allergic reaction leading to respiratory tract damage. In this study, we investigated the effect of motorcycle exhaust particles (MEP), a major pollutant in the Taiwan urban area, on airway inflammation and airway hyperresponsiveness in laboratory animals. BALB/c mice were instilled intratracheally (i.t.) with 1.2 mg/kg and 12 mg/kg of MEP, which was collected from two-stroke motorcycle engines. The mice were exposed 3 times i.t. with MEP, and various parameters for airway inflammation and hyperresponsiveness were sequentially analyzed. We found that MEP would induce airway and pulmonary inflammation characterized by infiltration of eosinophils, neutrophils, lymphocytes, and macrophages in bronchoalveolar lavage fluid (BALF) and inflammatory cell infiltration in lung. In addition, MEP treatment enhanced BALF interleukin-4 (IL-4), IL-5, and interferon-gamma (IFN-gamma) cytokine levels and serum IgE production. Bronchial response measured by unrestrained plethysmography with methacholine challenge showed that MEP treatment induced airway hyperresponsiveness (AHR) in BALB/c mice. The chemical components in MEP were further fractionated with organic solvents, and we found that the benzene-extracted fraction exerts a similar biological effect as seen with MEP, including airway inflammation, increased BALF IL-4, serum IgE production, and induction of AHR. In conclusion, we present evidence showing that the filter-trapped particles emitted from the unleaded-gasoline-fueled two-stroke motorcycle engine may induce proinflammatory and proallergic response profiles in the absence of exposure to allergen.

  3. A case of bilateral pneumothoraces resulting from tracheostomy for advanced laryngeal cancer.

    Science.gov (United States)

    Himeno, Akihiro; Tamura, Atsushi

    2017-06-01

    Pneumothorax is a possible complication of tracheostomy. We report a rare case of bilateral pneumothoraces resulting from tracheostomy in an advanced laryngeal cancer patient. A 59-year-old man was referred to our clinic for evaluation and treatment of laryngeal tumor. Laryngeal endoscopy showed limited movement of bilateral vocal cords, and computed tomography revealed a tumor lesion extending from the vocal cords to the subglottic area. Three days after the first visit, the patient developed respiratory difficulty, and we elected to perform emergency tracheostomy for airway management. Immediately after the start of the procedure, he began hyperventilating, and complained of respiratory discomfort and chest pain. We then recognized a mediastinal air leak, and we suspected pneumothorax resulting from the tracheostomy. Chest X-ray showed bilateral pneumothoraces; therefore, we inserted bilateral chest drainage tubes, which stabilized his respiratory condition. We speculated that the pathogenesis of the bilateral pneumothoraces was weakened alveolar walls secondary to long-term smoking, and a significant rise in airway pressure because of airway constriction by the neck-extended position and hyperventilation, during tracheostomy. Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.

  4. High-resolution CT of airway reactivity

    International Nuclear Information System (INIS)

    Herold, C.J.; Brown, R.H.; Hirshman, C.A.; Mitzner, W.; Zerhouni, E.A.

    1990-01-01

    Assessment of airway reactivity has generally been limited to experimental nonimaging models. This authors of this paper used high-resolution CT (HRCT) to evaluate airway reactivity and to calculate airway resistance (Raw) compared with lung resistance (RL). Ten anesthetized and ventilated dogs were investigated with HRCT (10 contiguous 2-mm sections through the lower lung lobes) during control state, following aerosol histamine challenge, and following posthistamine hyperinflation. The HRCT scans were digitized, and areas of 10 airways per dog (diameter, 1-10 mm) were measured with a computer edging process. Changes in airway area and Raw (calculated by 1/[area] 2 ) were measured. RL was assessed separately, following the same protocol. Data were analyzed by use of a paired t-test with significance at p < .05

  5. Airway fibroepithelial polyposis

    Directory of Open Access Journals (Sweden)

    Gonzalo Labarca

    2017-01-01

    Full Text Available Fibroepithelial polyps are benign lesions, frequently found in the skin and genitourinary tract. Airway involvement is rare, and few case reports have been published. Our patient was a 79 y.o. male smoker, who was referred to us with a 3-month history of dry cough. At physical examination, the patient looked well, but a chest CT showed a 6-mm polyp lesion in his trachea. A flexible bronchoscopy confirmed this lesion, and forceps biopsies were performed. Argon plasma coagulation was used to completely resect and treat the lesion. Pathological analysis revealed a fibroepithelial polyp (FP. The aim of this manuscript is to report a case of FP with bronchoscopic management and to review the current literature about this condition.

  6. Airway injury during emergency transcutaneous airway access: a comparison at cricothyroid and tracheal sites.

    LENUS (Irish Health Repository)

    Salah, Nazar

    2009-12-01

    Oxygenation via the cricothyroid membrane (CTM) may be required in emergencies, but inadvertent tracheal cannulation may occur. In this study, we compared airway injury between the tracheal and CTM sites using different techniques for airway access.

  7. Surgical management of advanced ocular adnexal amyloidosis.

    Science.gov (United States)

    Patrinely, J R; Koch, D D

    1992-06-01

    Ocular adnexal amyloidosis is characterized by amyloid deposition within the deep connective tissue layers of the eyelids, conjunctiva, and anterior orbit. Management of advanced cases has traditionally been unsatisfactory, with either no surgery offered because of fear of hemorrhage or an en bloc resection performed of the entire involved area. We present two cases of advanced periorbital amyloidosis successfully managed by preserving the anatomic planes of the eyelids and meticulously debulking the deposits with a spooned curette. Lax eyelid tendons and aponeuroses were simultaneously repaired, and no sacrifice of eyelid tissues was necessary. One patient remained asymptomatic for 2 years after surgery before developing early reaccumulation in the lower eyelids. The other patient required additional eyelid debulking and ptosis revision 8 months after surgery, but was in stable condition at follow-up 2 years after surgery. This technique offers safe, easily repeatable, nondestructive treatment for advanced periocular amyloidosis.

  8. Diagnosis of bronchiectasis and airway wall thickening in children with cystic fibrosis. Objective airway-artery quantification

    International Nuclear Information System (INIS)

    Kuo, Wieying; Tiddens, Harm A.W.M.; Bruijne, Marleen de; Petersen, Jens; Nasserinejad, Kazem; Ozturk, Hadiye; Chen, Yong; Perez-Rovira, Adria

    2017-01-01

    To quantify airway and artery (AA)-dimensions in cystic fibrosis (CF) and control patients for objective CT diagnosis of bronchiectasis and airway wall thickness (AWT). Spirometer-guided inspiratory and expiratory CTs of 11 CF and 12 control patients were collected retrospectively. Airway pathways were annotated semi-automatically to reconstruct three-dimensional bronchial trees. All visible AA-pairs were measured perpendicular to the airway axis. Inner, outer and AWT (outer-inner) diameter were divided by the adjacent artery diameter to compute A in A-, A out A- and A WT A-ratios. AA-ratios were predicted using mixed-effects models including disease status, lung volume, gender, height and age as covariates. Demographics did not differ significantly between cohorts. Mean AA-pairs CF: 299 inspiratory; 82 expiratory. Controls: 131 inspiratory; 58 expiratory. All ratios were significantly larger in inspiratory compared to expiratory CTs for both groups (p<0.001). A out A- and A WT A-ratios were larger in CF than in controls, independent of lung volume (p<0.01). Difference of A out A- and A WT A-ratios between patients with CF and controls increased significantly for every following airway generation (p<0.001). Diagnosis of bronchiectasis is highly dependent on lung volume and more reliably diagnosed using outer airway diameter. Difference in bronchiectasis and AWT severity between the two cohorts increased with each airway generation. (orig.)

  9. Post-extubation airway obstruction. Literature review

    Directory of Open Access Journals (Sweden)

    Álvaro SÁNCHEZ-TABERNERO

    2017-03-01

    Full Text Available Introduction and objective: airway obstruction after extubation in any surgery is a critical event with low incidence, which may require reintubation or tracheostomy, which often otolaryngologist is required. Objective: To determine the prevalence of BVA and its causes through systematic literature review. Method: Literature review in PubMed, Scopus and Cochrane clinical trials, meta-analysis, reviews and case series and control over airway obstruction after extubation that requires reintubation in adults. Results: 6 studies and one clinical practice guidelines were selected. The most common cause of extubation failure is blocking the airway for various reasons (pharyngeal muscle weakness residual effect -often farmacologycal-, laryngospasm, vocal cord paralysis, edema of upper respiratory tract, cervical postoperative hematoma, foreign bodies or secretions. Most cases of re-intubation occurred within 2 hours after extubation. Conclusions: The most common cause of failure after general anesthesia extubation is blocking the airway generally caused by residual neuromuscular blocking effect. Airway obstruction risk increases in airway and head and neck surgery. Difficult intubation guidlines have improved performance and reduced adverse events and similar strategies must be implemented in extubation. The procedure extubation and reintubation should be documented. Working groups airway must be multidisciplinary and include specialists in otolaryngology.

  10. Rule-based detection of intrathoracic airway trees

    International Nuclear Information System (INIS)

    Sonka, M.; Park, W.; Hoffman, E.A.

    1996-01-01

    New sensitive and reliable methods for assessing alterations in regional lung structure and function are critically important for the investigation and treatment of pulmonary diseases. Accurate identification of the airway tree will provide an assessment of airway structure and will provide a means by which multiple volumetric images of the lung at the same lung volume over time can be used to assess regional parenchymal changes. The authors describe a novel rule-based method for the segmentation of airway trees from three-dimensional (3-D) sets of computed tomography (CT) images, and its validation. The presented method takes advantage of a priori anatomical knowledge about pulmonary airway and vascular trees and their interrelationships. The method is based on a combination of 3-D seeded region growing that is used to identify large airways, rule-based two-dimensional (2-D) segmentation of individual CT slices to identify probable locations of smaller diameter airways, and merging of airway regions across the 3-D set of slices resulting in a tree-like airway structure. The method was validated in 40 3-mm-thick CT sections from five data sets of canine lungs scanned via electron beam CT in vivo with lung volume held at a constant pressure. The method's performance was compared with that of the conventional 3-D region growing method. The method substantially outperformed an existing conventional approach to airway tree detection

  11. Pharyngeal airway changes following mandibular setback surgery

    Directory of Open Access Journals (Sweden)

    Babu Ramesh

    2005-01-01

    Full Text Available Treatment of dentofacial deformities with jaw osteotomies has an effect on airway anatomy and therefore mandibular setback surgery has the potential to diminish airway size. The purpose of this study was to evaluate the effect of mandibular setback surgery on airway size. 8 consecutive patients were examined prospectively. All patients underwent mandibular setback surgery. Cephalometric analysis was performed preoperatively and 3 months post operatively with particular attention to pharyngeal airway changes. Pharyngeal airway size decreased considerably in all, patients thus predisposing to development of obstructive sleep apnea. Therefore, large anteroposterior discrepancies should be corrected by combined maxillary and mandibular osteotomies.

  12. Continuous Positive Airway Pressure (CPAP)

    Science.gov (United States)

    ... ENT Doctor Near You Continuous Positive Airway Pressure (CPAP) Continuous Positive Airway Pressure (CPAP) Patient Health Information ... relations staff at newsroom@entnet.org . What Is CPAP? The most common and effective nonsurgical treatment for ...

  13. [Proposed difficult airway teaching methodology. Presentation of an interactive fresh frozen cadaver model].

    Science.gov (United States)

    Catalá Bauset, J C; de Andres Ibañez, J A; Valverde Navarro, A; Martinez Soriano, F

    2014-04-01

    The aim of this paper is to present a methodology based on the use of fresh-frozen cadavers for training in the management of the airway, and to evaluate the degree of satisfaction among learning physicians. About 6 fresh-frozen cadavers and 14 workstations were prepared where participants were trained in the different skills needed for airway management. The details of preparation of the cadavers are described. The level of satisfaction of the participant was determined using a Likert rating scale of 5 points, at each of the 14 stations, as well as the overall assessment and clinical usefulness of the course. The mean overall evaluation of the course and its usefulness was 4.75 and 4.9, out of 5, respectively. All parts of the course were rated above 4 out of 5. The high level of satisfaction of the course remained homogeneous in the 2 editions analysed. The overall satisfaction of the course was not finally and uniquely determined by any of its particular parts. The fresh cadaver model for training physicians in techniques of airway management is a proposal satisfactory to the participant, and with a realism that approaches the live patient. Copyright © 2013 Sociedad Española de Anestesiología, Reanimación y Terapéutica del Dolor. Published by Elsevier España. All rights reserved.

  14. Stenting of major airway constriction

    International Nuclear Information System (INIS)

    Wu Xiaomei

    2002-01-01

    Objective: To investigate the correlated issues in the stenting treatment of major airway constriction. Methods: Nineteen cases of major airway stenting procedure were studied retrospectively. The clinical choice of stents of different advantages or deficiencies were discussed. The importance of intravenous anesthesia supporting, life-parameters monitoring during the procedures and the prevention of complications were analysed. Results: Under intravenous and local anesthesia, 19 Wallstents had been successively placed and relieved 19 cases of major airway constrictions due to malignant or benign diseases (15 of tumors, 3 of tuberculosis, 1 of tracheomalacia). Intravenous anesthesia and life-parameters monitoring had made the procedures more safe and precise. Conclusions: Major airway stenting is an reliable method for relieving tracheobronchial stenosis; and intravenous anesthesia supporting and life-parameters monitoring guarantee the satisfactions of procedures

  15. Diagnosis of bronchiectasis and airway wall thickening in children with cystic fibrosis. Objective airway-artery quantification

    Energy Technology Data Exchange (ETDEWEB)

    Kuo, Wieying; Tiddens, Harm A.W.M. [Erasmus MC - Sophia Children' s Hospital, Department of Pediatric Pulmonology and Allergology, Rotterdam (Netherlands); Erasmus MC, Department of Radiology, Rotterdam (Netherlands); Bruijne, Marleen de [Erasmus MC, Biomedical Imaging Group Rotterdam, Departments of Medical Informatics and Radiology, Rotterdam (Netherlands); University of Copenhagen, Department of Computer Science, Copenhagen (Denmark); Petersen, Jens [University of Copenhagen, Department of Computer Science, Copenhagen (Denmark); Nasserinejad, Kazem [Erasmus MC Cancer Institute, HOVON Data Center, Clinical Trial Center, Rotterdam (Netherlands); Erasmus MC, Department of Biostatistics, Rotterdam (Netherlands); Ozturk, Hadiye [Erasmus MC - Sophia Children' s Hospital, Department of Pediatric Pulmonology and Allergology, Rotterdam (Netherlands); Chen, Yong [General Hospital of Ningxia Medical University, Department of Radiology, Yinchuan (China); Perez-Rovira, Adria [Erasmus MC - Sophia Children' s Hospital, Department of Pediatric Pulmonology and Allergology, Rotterdam (Netherlands); Erasmus MC, Biomedical Imaging Group Rotterdam, Departments of Medical Informatics and Radiology, Rotterdam (Netherlands)

    2017-11-15

    To quantify airway and artery (AA)-dimensions in cystic fibrosis (CF) and control patients for objective CT diagnosis of bronchiectasis and airway wall thickness (AWT). Spirometer-guided inspiratory and expiratory CTs of 11 CF and 12 control patients were collected retrospectively. Airway pathways were annotated semi-automatically to reconstruct three-dimensional bronchial trees. All visible AA-pairs were measured perpendicular to the airway axis. Inner, outer and AWT (outer-inner) diameter were divided by the adjacent artery diameter to compute A{sub in}A-, A{sub out}A- and A{sub WT}A-ratios. AA-ratios were predicted using mixed-effects models including disease status, lung volume, gender, height and age as covariates. Demographics did not differ significantly between cohorts. Mean AA-pairs CF: 299 inspiratory; 82 expiratory. Controls: 131 inspiratory; 58 expiratory. All ratios were significantly larger in inspiratory compared to expiratory CTs for both groups (p<0.001). A{sub out}A- and A{sub WT}A-ratios were larger in CF than in controls, independent of lung volume (p<0.01). Difference of A{sub out}A- and A{sub WT}A-ratios between patients with CF and controls increased significantly for every following airway generation (p<0.001). Diagnosis of bronchiectasis is highly dependent on lung volume and more reliably diagnosed using outer airway diameter. Difference in bronchiectasis and AWT severity between the two cohorts increased with each airway generation. (orig.)

  16. Use of intubating laryngeal mask airway in a morbidly obese patient with chest trauma in an emergency setting

    Directory of Open Access Journals (Sweden)

    Tripat Bindra

    2011-01-01

    Full Text Available A morbidly obese male who sustained blunt trauma chest with bilateral pneumothorax was referred to the intensive care unit for management of his condition. Problems encountered in managing the patient were gradually increasing hypoxemia (chest trauma with multiple rib fractures with lung contusions and difficult mask ventilation and intubation (morbid obesity, heavy jaw, short and thick neck. We performed awake endotracheal intubation using an intubating laryngeal mask airway (ILMA size 4 and provided mechanical ventilation to the patient. This report suggests that ILMA can be very useful in the management of difficult airway outside the operating room and can help in preventing adverse events in an emergency setting.

  17. On-site customization of silicone stents: towards optimal palliation of complex airway conditions.

    Science.gov (United States)

    Breen, David P; Dutau, Hervé

    2009-01-01

    Stents may be indicated as treatment of benign and malignant conditions of the central airways. Occasionally, aberrant and/or distorted airways secondary to therapy or surgery may preclude the use of commercially manufactured stents. The customization of stents is well described for nonpulmonary diseases, but to date there are only limited data in the literature on prosthesis customization for airway disease. To review all the different techniques and indications of on-site silicone stent customizations and their related complications. A retrospective study was undertaken to identify all patients who underwent treatment with a silicone stent which was customized on site by the physician. The study included subjects treated during an 8-year period. Forty-nine on-site customizations were performed in 43 patients (34 males, mean age 63 +/- 5.2 years). Stent customization was performed in 5.4% of the cases. Stent customization was performed for malignant and benign disease in 35 (81.3%) and 8 (18.7%) cases, respectively. In all cases, the stent deployed successfully and performed well while in situ. Stent manipulation did not increase complications. Customization of airway stents by the physician can lead to successful stenting of difficult airway lesions with a good short-term safety profile. Standard commercially available stents may have resulted in suboptimal management of complex airway pathologies. A prospective study is warranted to further investigate the safety profile and complications associated with stent customization. Copyright 2009 S. Karger AG, Basel.

  18. Airway responsiveness to mannitol in asthma is associated with chymase-positive mast cells and eosinophilic airway inflammation

    DEFF Research Database (Denmark)

    Sverrild, Asger; Bergqvist, Anders; Baines, Katherine J

    2016-01-01

    BACKGROUND: Airway hyperresponsiveness (AHR) to inhaled mannitol is associated with indirect markers of mast cell activation and eosinophilic airway inflammation. It is unknown how AHR to mannitol relates to mast cell phenotype, mast cell function and measures of eosinophilic inflammation in airway...... tissue. We compared the number and phenotype of mast cells, mRNA expression of mast cell-associated genes and number of eosinophils in airway tissue of subjects with asthma and healthy controls in relation to AHR to mannitol. METHODS: Airway hyperresponsiveness to inhaled mannitol was measured in 23 non......-smoking, corticosteroid-free asthmatic individuals and 10 healthy controls. Mast cells and eosinophils were identified in mucosal biopsies from all participants. Mast cells were divided into phenotypes based on the presence of chymase. mRNA expression of mast cell-associated genes was measured by real-time PCR. RESULTS...

  19. Data management system advanced development

    Science.gov (United States)

    Douglas, Katherine; Humphries, Terry

    1990-01-01

    The Data Management System (DMS) Advanced Development task provides for the development of concepts, new tools, DMS services, and for the testing of the Space Station DMS hardware and software. It also provides for the development of techniques capable of determining the effects of system changes/enhancements, additions of new technology, and/or hardware and software growth on system performance. This paper will address the built-in characteristics which will support network monitoring requirements in the design of the evolving DMS network implementation, functional and performance requirements for a real-time, multiprogramming, multiprocessor operating system, and the possible use of advanced development techniques such as expert systems and artificial intelligence tools in the DMS design.

  20. Pediatric supraglottic airway devices in clinical practice: A prospective observational study.

    Science.gov (United States)

    Kleine-Brueggeney, Maren; Gottfried, Anne; Nabecker, Sabine; Greif, Robert; Book, Malte; Theiler, Lorenz

    2017-09-02

    Supraglottic airway devices (SGA) are commonly used in pediatric anesthesia and serve as primary or back-up devices for difficult airway management. Most SGA are marketed without proper clinical evaluation. The purpose of this study was to evaluate the performance of the pediatric LMA Supreme™, Air-Q® and Ambu® Aura-i™. This prospective observational study was performed at Bern University Hospital, Switzerland. With ethics committee approval and a waiver for written informed consent 240 children undergoing elective surgery with an ASA class I-III and a weight of 5-30 kg were included. Three different pediatric supraglottic airway devices were assessed: The LMA Supreme™, Air-Q® and Ambu® Aura-i™. Primary outcome parameter was airway leak pressure. Secondary outcome parameters included first attempt and overall success rate, insertion time, fiberoptic view through the SGA, and adverse events. The primary hypothesis was that the mean airway leak pressure of each tested SGA was 20 cmH 2 O ± 10%. None of the SGA showed a mean airway leak pressure of 20 cmH 2 O ± 10%, but mean airway leak pressures differed significantly between devices [LMA Supreme™ 18.0 (3.4) cmH 2 O, Air-Q® 15.9 (3.2) cmH 2 O, Ambu® Aura-i™ 17.3 (3.7) cmH 2 O, p < 0.001]. First attempt success rates (LMA Supreme™ 100%, Air-Q® 90%, Ambu® Aura-i™ 91%, p = 0.02) and overall success rates (LMA Supreme™ 100%, Air-Q® 91%, Ambu® Aura-i™ 95%, p = 0.02) also differed significantly. Insertion times ranged from 20 (7) seconds (Air-Q®) to 24 (6) seconds (LMA Supreme™, Airway leak pressures ranged from 16 to 18 cmH 2 O, enabling positive pressure ventilation with all successful SGA. The highest success rates were achieved by the LMA Supreme™, which was also

  1. Spatiotemporal correlation of optical coherence tomography in-vivo images of rabbit airway for the diagnosis of edema

    Science.gov (United States)

    Kang, DongYel; Wang, Alex; Volgger, Veronika; Chen, Zhongping; Wong, Brian J. F.

    2015-07-01

    Detection of an early stage of subglottic edema is vital for airway management and prevention of stenosis, a life-threatening condition in critically ill neonates. As an observer for the task of diagnosing edema in vivo, we investigated spatiotemporal correlation (STC) of full-range optical coherence tomography (OCT) images acquired in the rabbit airway with experimentally simulated edema. Operating the STC observer on OCT images generates STC coefficients as test statistics for the statistical decision task. Resulting from this, the receiver operating characteristic (ROC) curves for the diagnosis of airway edema with full-range OCT in-vivo images were extracted and areas under ROC curves were calculated. These statistically quantified results demonstrated the potential clinical feasibility of the STC method as a means to identify early airway edema.

  2. Emergency airway management with laryngeal mask airway

    African Journals Online (AJOL)

    2009-12-01

    Dec 1, 2009 ... management and as a ventilatory device during anesthesia. It is concluded that ... minutes with a tight fitting face mask and a closed system; and 0.6 mg of ... In the operating suite, intravenous access was secured and saline ...

  3. Rhinosinusitis and the lower airways

    NARCIS (Netherlands)

    Hellings, Peter W.; Hens, Greet

    2009-01-01

    The interaction between upper and lower airway disease has been recognized for centuries, with recent studies showing a direct link between upper and airway inflammation in allergic patients. The mechanisms underlying the interaction between nasal and bronchial inflammation have primarily been

  4. Advance simulation capability for environmental management (ASCEM) - 59065

    International Nuclear Information System (INIS)

    Dixon, Paul; Keating, Elizabeth; Moulton, David; Williamson, Mark; Collazo, Yvette; Gerdes, Kurt; Freshley, Mark; Gorton, Ian; Meza, Juan

    2012-01-01

    The United States Department Energy (DOE) Office of Environmental Management (EM) determined that uniform application of advanced modeling in the subsurface could help reduce the cost and risks associated with its environmental cleanup mission. In response to this determination, the EM Office of Technology Innovation and Development (OTID), Groundwater and Soil Remediation (GW and S) began the program Advanced Simulation Capability for Environmental Management (ASCEM). ASCEM is a state-of-the-art scientific tool and approach for integrating data and scientific understanding to enable prediction of contaminant fate and transport in natural and engineered systems. This initiative supports the reduction of uncertainties and risks associated with EM?s environmental cleanup and closure programs through better understanding and quantifying the subsurface flow and contaminant transport behavior in complex geological systems. This involves the long-term performance of engineered components, including cementitious materials in nuclear waste disposal facilities that may be sources for future contamination of the subsurface. This paper describes the ASCEM tools and approach and the ASCEM programmatic accomplishments completed in 2010 including recent advances and technology transfer. The US Department of Energy Office of Environmental Management has begun development of an Advanced Simulation Capability for Environmental Management, (ASCEM). This program will provide predictions of the end states of contaminated areas allowing for cost and risk reduction of EM remedial activities. ASCEM will provide the tools and approaches necessary to standardize risk and performance assessments across the DOE complex. Through its Phase One demonstration, the ASCEM team has shown value to the EM community in the areas of High Performance Computing, Data Management, Visualization, and Uncertainty Quantification. In 2012, ASCEM will provide an initial limited release of a community code for

  5. Advanced Management Communication: An Elective Course in Corporate Communication.

    Science.gov (United States)

    Argenti, Paul A.

    1986-01-01

    Proposes a college-level elective course in advanced management communication that would teach future managers how to communicate with shareholders, the media, financial analysts, and the labor force. (SRT)

  6. Inventory management with advance capacity information

    NARCIS (Netherlands)

    Jaksic, M.; Fransoo, J.C.; Tan, T.; Kok, de A.G.; Rusjan, B.

    2011-01-01

    An important aspect of supply chain management is dealing with demand and supply uncertainty. The uncertainty of future supply can be reduced if a company is able to obtain advance capacity information (ACI) about future supply/production capacity availability from its supplier. We address a

  7. Performance Enhancements for Advanced Database Management Systems

    OpenAIRE

    Helmer, Sven

    2000-01-01

    New applications have emerged, demanding database management systems with enhanced functionality. However, high performance is a necessary precondition for the acceptance of such systems by end users. In this context we developed, implemented, and tested algorithms and index structures for improving the performance of advanced database management systems. We focused on index structures and join algorithms for set-valued attributes.

  8. Macroscopic barotrauma caused by stiff and soft-tipped airway exchange catheters: an in vitro case series.

    Science.gov (United States)

    Axe, Robert; Middleditch, Alex; Kelly, Fiona E; Batchelor, Tim J; Cook, Tim M

    2015-02-01

    Many airway management guidelines include the use of airway exchange catheters (AECs). There are reports, however, of harm from their use, from both malpositioning and in particular from the administration of oxygen via an AEC leading to barotrauma. We used an in vitro pig lung model to investigate the safety of administering oxygen at 4 different flow rates from a high-pressure source via 2 different AECs: a standard catheter and a soft-tipped catheter. Experiments were performed with the catheters positioned either above the carina or below it at the first point of resistance to advancement (hold-up). The experiments were then repeated to produce a series of 32 cases. With an AEC positioned above the carina, we did not observe macroscopic lung damage after the administration of oxygen. The administration of oxygen through an AEC positioned below the carina resulted in macroscopic barotrauma regardless of the rate of oxygen delivery. Increasing speed of oxygen flow led to faster and more extensive damage. Use of an "injector" at 2.5 or 4 bar led to instantaneous macroscopic lung damage and advancement of the AEC through the lung tissue. Our observations were the same when both types of AECs were used. Our results are consistent with reports of harm during the use of AECs and demonstrate the risk of administering oxygen through these devices when they are positioned below the carina. An indicator, ideally made on an AEC at the time of manufacture and designed to lie at the same level as the teeth, may be useful in preventing the insertion of that AEC beyond the level of the carina and improve the safety of using such devices.

  9. [Rare problem with the insertion of a Supreme™ laryngeal mask airway device. Case of the trimester].

    Science.gov (United States)

    2014-03-01

    A breast tumor was resected under general anesthesia. After induction, the airway was managed with a Supreme™ laryngeal mask airway device. The insertion of the laryngeal mask airway device, the insertion of the orogastric tube through the drain tube, as well as the mechanical ventilation, were very difficult from the beginning. On removing the laryngeal mask airway device to solve the problem, it was observed that the drain tube was broken, and the orogastric tube had passed into the anterior, laryngeal part of the device through the split. It was later found out that the laryngeal mask airway device, as well as the whole manufacturing batch, had suffered a design modification: the cuff was constructed with a softer material without reinforcement in the tip, and the drain tube had a heat-sealing defect that facilitated the break. The incident was reported to the local supplier and the manufacturer, and the defective batch of laryngeal mask airway devices was recalled. The incident was also reported to other hospitals via SENSAR, to warn other users of the potential dangers of the design modification in the Supreme™ laryngeal mask airway. Copyright © 2013 Sociedad Española de Anestesiología, Reanimación y Terapéutica del Dolor. Published by Elsevier España. All rights reserved.

  10. An ovine tracheal explant culture model for allergic airway inflammation

    Directory of Open Access Journals (Sweden)

    Abeynaike Latasha

    2010-08-01

    Full Text Available Abstract Background The airway epithelium is thought to play an important role in the pathogenesis of asthmatic disease. However, much of our understanding of airway epithelial cell function in asthma has been derived from in vitro studies that may not accurately reflect the interactive cellular and molecular pathways active between different tissue constituents in vivo. Methods Using a sheep model of allergic asthma, tracheal explants from normal sheep and allergic sheep exposed to house dust mite (HDM allergen were established to investigate airway mucosal responses ex vivo. Explants were cultured for up to 48 h and tissues were stained to identify apoptotic cells, goblet cells, mast cells and eosinophils. The release of cytokines (IL-1α, IL-6 and TNF-α by cultured tracheal explants, was assessed by ELISA. Results The general morphology and epithelial structure of the tracheal explants was well maintained in culture although evidence of advanced apoptosis within the mucosal layer was noted after culture for 48 h. The number of alcian blue/PAS positive mucus-secreting cells within the epithelial layer was reduced in all cultured explants compared with pre-cultured (0 h explants, but the loss of staining was most evident in allergic tissues. Mast cell and eosinophil numbers were elevated in the allergic tracheal tissues compared to naïve controls, and in the allergic tissues there was a significant decline in mast cells after 24 h culture in the presence or absence of HDM allergen. IL-6 was released by allergic tracheal explants in culture but was undetected in cultured control explants. Conclusions Sheep tracheal explants maintain characteristics of the airway mucosa that may not be replicated when studying isolated cell populations in vitro. There were key differences identified in explants from allergic compared to control airways and in their responses in culture for 24 h. Importantly, this study establishes the potential for the

  11. The intelligent user interface for NASA's advanced information management systems

    Science.gov (United States)

    Campbell, William J.; Short, Nicholas, Jr.; Rolofs, Larry H.; Wattawa, Scott L.

    1987-01-01

    NASA has initiated the Intelligent Data Management Project to design and develop advanced information management systems. The project's primary goal is to formulate, design and develop advanced information systems that are capable of supporting the agency's future space research and operational information management needs. The first effort of the project was the development of a prototype Intelligent User Interface to an operational scientific database, using expert systems and natural language processing technologies. An overview of Intelligent User Interface formulation and development is given.

  12. Phosphodiesterases regulate airway smooth muscle function in health and disease.

    Science.gov (United States)

    Krymskaya, Vera P; Panettieri, Reynold A

    2007-01-01

    On the basis of structure, regulation, and kinetic properties, phosphodiesterases (PDEs) represent a superfamily of enzymes divided into 11 subfamilies that catalyze cytosolic levels of 3',5'-cyclic adenosine monophosphate (cAMP) or 3',5'-cyclic guanosine monophosphate (cGMP) to 5'-AMP or 5'-GMP, respectively. PDE4 represents the major PDE expressed in inflammatory cells as well as airway smooth muscle (ASM), and selective PDE4 inhibitors provide a broad spectrum of anti-inflammatory effects such as abrogating cytokine and chemokine release from inflammatory cells and inhibiting inflammatory cell trafficking. Due to cell- and tissue-specific gene expression and regulation, PDEs modulate unique organ-based functions. New tools or compounds that selectively inhibit PDE subfamilies and genetically engineered mice deficient in selective isoforms have greatly enhanced our understanding of PDE function in airway inflammation and resident cell function. This chapter will focus on recent advances in our understanding of the role of PDE in regulating ASM function.

  13. Advanced nuclear fuel cycles and radioactive waste management

    International Nuclear Information System (INIS)

    2006-01-01

    This study analyses a range of advanced nuclear fuel cycle options from the perspective of their effect on radioactive waste management policies. It presents various fuel cycle options which illustrate differences between alternative technologies, but does not purport to cover all foreseeable future fuel cycles. The analysis extends the work carried out in previous studies, assesses the fuel cycles as a whole, including all radioactive waste generated at each step of the cycles, and covers high-level waste repository performance for the different fuel cycles considered. The estimates of quantities and types of waste arising from advanced fuel cycles are based on best available data and experts' judgement. The effects of various advanced fuel cycles on the management of radioactive waste are assessed relative to current technologies and options, using tools such as repository performance analysis and cost studies. (author)

  14. Inventory management with advance capacity information

    NARCIS (Netherlands)

    Jaksic, M.; Fransoo, J.C.; Tan, T.; Kok, de A.G.; Rusjan, B.

    2008-01-01

    One of the important aspects of supply chain management is dealing with demand and supply uncertainty. The uncertainty of future supply can be reduced, if a company is able to obtain advance capacity information (ACI) on future supply/production capacity availability from its supplier. We address a

  15. Advances in water resources management

    CERN Document Server

    Yang, Chih; Wang, Mu-Hao

    2016-01-01

    This volume provides in-depth coverage of such topics as multi-reservoir system operation theory and practice, management of aquifer systems connected to streams using semi-analytical models, one-dimensional model of water quality and aquatic ecosystem-ecotoxicology in river systems, environmental and health impacts of hydraulic fracturing and shale gas, bioaugmentation for water resources protection, wastewater renovation by flotation for water pollution control, determination of receiving water’s reaeration coefficient in the presence of salinity for water quality management, sensitivity analysis for stream water quality management, river ice process, and computer-aided mathematical modeling of water properties. This critical volume will serve as a valuable reference work for advanced undergraduate and graduate students, designers of water resources systems, and scientists and researchers. The goals of the Handbook of Environmental Engineering series are: (1) to cover entire environmental fields, includin...

  16. Advanced Fuel Cell System Thermal Management for NASA Exploration Missions

    Science.gov (United States)

    Burke, Kenneth A.

    2009-01-01

    The NASA Glenn Research Center is developing advanced passive thermal management technology to reduce the mass and improve the reliability of space fuel cell systems for the NASA exploration program. An analysis of a state-of-the-art fuel cell cooling systems was done to benchmark the portion of a fuel cell system s mass that is dedicated to thermal management. Additional analysis was done to determine the key performance targets of the advanced passive thermal management technology that would substantially reduce fuel cell system mass.

  17. Routine airway surveillance in pediatric tracheostomy patients.

    Science.gov (United States)

    Gergin, Ozgul; Adil, Eelam; Kawai, Kosuke; Watters, Karen; Moritz, Ethan; Rahbar, Reza

    2017-06-01

    The aim of this study is to review airway findings in children with tracheostomies who underwent surveillance direct laryngoscopy and bronchoscopy (DLB) to determine the yield of routine airway evaluation in these patients. Retrospective chart review at tertiary referral children's hospital. A retrospective chart review was conducted of all of the children with tracheostomies who underwent DLB after tracheostomy between 1984 and 2015. A total of 303 patients met inclusion criteria. The median time interval between tracheostomy and first follow-up DLB was 12.0 months (IQR 4.8-28.9 months). There was no significant difference in the incidence of airway lesions between patients who underwent endoscopy tracheostomy versus those who had a longer time interval between tracheostomy and DLB (p = 0.16). One hundred sixty seven patients (55.1%) were diagnosed with lesions, with suprastomal granulation (39.9%) being the most common. Symptomatic patients were significantly more likely to have an airway lesion identified (69.9% versus 42.0%; p tracheostomy were significantly more likely to have an airway lesion (p = 0.01). The high incidence of airway lesions noted during surveillance DLB support the utility of routine airway endoscopy in pediatric tracheostomy patients. Symptomatic patients, those with ventilator dependence, or cardiopulmonary or trauma indications for tracheostomy are more likely to have airway lesions and should be monitored closely. The ideal time interval between surveillance endoscopies needs to be examined further. Copyright © 2017. Published by Elsevier B.V.

  18. Chronic airway obstruction in children. Most common causes, diagnosis and Surgical and Endoscopic Treatment

    Directory of Open Access Journals (Sweden)

    Ana Isabel NAVAZO-EGUÍA

    2018-03-01

    Full Text Available Introduction: Obstructive airway pathology in children may be congenital or acquired. Fortunately, it is a rare condition, but in most cases, it implies a diagnostic and therapeutic challenge. Endoscopic techniques have experienced in the last years a breakthrough in the treatment of these lesions, but open surgery still plays an important role. Objective: Our objective was to review the most frequent causes of obstruction of the central airway in the child, their diagnostic and current treatment status. Conclusions: Obstructive airway pathology in children requires immediate stabilization, detailed assessment, meticulous planning and individualized treatment. Management of patients with airway obstruction requires a close cooperation between specialists organized in multidisciplinary teams, whose main objective is the diagnosis and timely resolution of the various congenital malformations and acquired lesions that affect the larynx, trachea and bronchi. In many cases the decision of the treatment of choice is not easy. Selection of the most suitable treatment depends on the patient’s clinical situation and the anatomic type of stenosis. The surgeon must master all available techniques, to solve each specific situation.

  19. Evaluation of Advanced Data Centre Power Management Strategies

    NARCIS (Netherlands)

    Postema, Björn F.; Haverkort, Boudewijn R.

    2018-01-01

    In recent work, we proposed a new specification language for power management strategies as an extension to our AnyLogic-based simulation framework for the trade-off analysis of power and performance in data centres. In this paper, we study the quality of such advanced power management strategies

  20. Lingual traction to facilitate fiber-optic intubation of difficult airways: a single-anesthesiologist randomized trial.

    Science.gov (United States)

    Ching, Yiu-Hei; Karlnoski, Rachel A; Chen, Henian; Camporesi, Enrico M; Shah, Vimal V; Padhya, Tapan A; Mangar, Devanand

    2015-04-01

    Flexible fiber-optic bronchoscope-guided orotracheal intubation is a valuable technique with demonstrated benefits in the management of difficult airways. Despite its popularity with anesthesia providers, the technique is not fail-safe and airway-related complications secondary to failed intubation attempts remain an important problem. We sought to determine the effect of incorporating lingual traction on the success rate of fiber-optic bronchoscope-guided intubation in patients with anticipated difficult airways. In this prospective, randomized, cohort study, we enrolled 91 adult patients with anticipated difficult airways scheduled for elective surgery to undergo fiber-optic bronchoscope-guided orotracheal intubation alone or with lingual traction by an individual anesthesiologist after induction of general anesthesia and neuromuscular blockade. A total of 78 patients were randomized: 39 patients to the fiber-optic bronchoscope-guided intubation with lingual traction group and 39 patients to the fiber-optic bronchoscope-guided intubation alone group. The primary endpoint was the rate of successful first attempt intubations. The secondary outcome was sore throat grade on post-operative day 1. Fiber-optic intubation with lingual traction compared to fiber-optic intubation alone resulted in a higher success rate (92.3 vs. 74.4 %, χ (2) = 4.523, p = 0.033) and greater odds for successful first attempt intubation (OR 4.138, 95 % CI 1.041-16.444, p = 0.044). Sore throat severity on post-operative day 1 was not significantly different but trended towards worsening grades with lingual traction. In this study, lingual traction was shown to be a valuable maneuver for facilitating fiber-optic bronchoscope-guided intubation in the management of patients with anticipated difficult airways.

  1. A novel technique in airway management of neonates with occipital encephalocele.

    Science.gov (United States)

    Rangaswamy, N; Pramanik, A K

    2014-11-01

    Airway stabilization in neonates with occipital encephalocele (OE) is critical during surgery or if they develop hypoxic-respiratory failure. Endotracheal intubation can be challenging due to difficulty in positioning the head in a patient with large occipital mass. We describe a novel technique for positioning neonates with large OE using a commonly used hospital apparatus which facilitated appropriate positioning of the baby and successful endotracheal intubation with ease and no additional staff.

  2. Upper airway morphology in Down Syndrome patients under dexmedetomidine sedation

    Directory of Open Access Journals (Sweden)

    Rajeev Subramanyam

    Full Text Available Abstract Background and objectives: Children with Down Syndrome are vulnerable to significant upper airway obstruction due to relative macroglossia and dynamic airway collapse. The objective of this study was to compare the upper airway dimensions of children with Down Syndrome and obstructive sleep apnea with normal airway under dexmedetomidine sedation. Methods: IRB approval was obtained. In this retrospective study, clinically indicated dynamic sagittal midline magnetic resonance images of the upper airway were obtained under low (1 mcg/kg/h and high (3 mcg/kg/h dose dexmedetomidine. Airway anteroposterior diameters and sectional areas were measured as minimum and maximum dimensions by two independent observers at soft palate (nasopharyngeal airway and at base of the tongue (retroglossal airway. Results and conclusions: Minimum anteroposterior diameter and minimum sectional area at nasopharynx and retroglossal airway were significantly reduced in Down Syndrome compared to normal airway at both low and high dose dexmedetomidine. However, there were no significant differences between low and high dose dexmedetomidine in both Down Syndrome and normal airway. The mean apnea hypopnea index in Down Syndrome was 16 ± 11. Under dexmedetomidine sedation, children with Down Syndrome and obstructive sleep apnea when compared to normal airway children show significant reductions in airway dimensions most pronounced at the narrowest points in the nasopharyngeal and retroglossal airways.

  3. Upper airway morphology in Down Syndrome patients under dexmedetomidine sedation.

    Science.gov (United States)

    Subramanyam, Rajeev; Fleck, Robert; McAuliffe, John; Radhakrishnan, Rupa; Jung, Dorothy; Patino, Mario; Mahmoud, Mohamed

    2016-01-01

    Children with Down Syndrome are vulnerable to significant upper airway obstruction due to relative macroglossia and dynamic airway collapse. The objective of this study was to compare the upper airway dimensions of children with Down Syndrome and obstructive sleep apnea with normal airway under dexmedetomidine sedation. IRB approval was obtained. In this retrospective study, clinically indicated dynamic sagittal midline magnetic resonance images of the upper airway were obtained under low (1mcg/kg/h) and high (3mcg/kg/h) dose dexmedetomidine. Airway anteroposterior diameters and sectional areas were measured as minimum and maximum dimensions by two independent observers at soft palate (nasopharyngeal airway) and at base of the tongue (retroglossal airway). Minimum anteroposterior diameter and minimum sectional area at nasopharynx and retroglossal airway were significantly reduced in Down Syndrome compared to normal airway at both low and high dose dexmedetomidine. However, there were no significant differences between low and high dose dexmedetomidine in both Down Syndrome and normal airway. The mean apnea hypopnea index in Down Syndrome was 16±11. Under dexmedetomidine sedation, children with Down Syndrome and obstructive sleep apnea when compared to normal airway children show significant reductions in airway dimensions most pronounced at the narrowest points in the nasopharyngeal and retroglossal airways. Copyright © 2015 Sociedade Brasileira de Anestesiologia. Published by Elsevier Editora Ltda. All rights reserved.

  4. [Upper airway morphology in Down Syndrome patients under dexmedetomidine sedation].

    Science.gov (United States)

    Subramanyam, Rajeev; Fleck, Robert; McAuliffe, John; Radhakrishnan, Rupa; Jung, Dorothy; Patino, Mario; Mahmoud, Mohamed

    2016-01-01

    Children with Down Syndrome are vulnerable to significant upper airway obstruction due to relative macroglossia and dynamic airway collapse. The objective of this study was to compare the upper airway dimensions of children with Down Syndrome and obstructive sleep apnea with normal airway under dexmedetomidine sedation. IRB approval was obtained. In this retrospective study, clinically indicated dynamic sagittal midline magnetic resonance images of the upper airway were obtained under low (1mcg/kg/h) and high (3mcg/kg/h) dose dexmedetomidine. Airway anteroposterior diameters and sectional areas were measured as minimum and maximum dimensions by two independent observers at soft palate (nasopharyngeal airway) and at base of the tongue (retroglossal airway). Minimum anteroposterior diameter and minimum sectional area at nasopharynx and retroglossal airway were significantly reduced in Down Syndrome compared to normal airway at both low and high dose dexmedetomidine. However, there were no significant differences between low and high dose dexmedetomidine in both Down Syndrome and normal airway. The mean apnea hypopnea index in Down Syndrome was 16±11. Under dexmedetomidine sedation, children with Down Syndrome and obstructive sleep apnea when compared to normal airway children show significant reductions in airway dimensions most pronounced at the narrowest points in the nasopharyngeal and retroglossal airways. Copyright © 2015 Sociedade Brasileira de Anestesiologia. Publicado por Elsevier Editora Ltda. All rights reserved.

  5. Comparison of low- and ultralow-dose computed tomography protocols for quantitative lung and airway assessment.

    Science.gov (United States)

    Hammond, Emily; Sloan, Chelsea; Newell, John D; Sieren, Jered P; Saylor, Melissa; Vidal, Craig; Hogue, Shayna; De Stefano, Frank; Sieren, Alexa; Hoffman, Eric A; Sieren, Jessica C

    2017-09-01

    Quantitative computed tomography (CT) measures are increasingly being developed and used to characterize lung disease. With recent advances in CT technologies, we sought to evaluate the quantitative accuracy of lung imaging at low- and ultralow-radiation doses with the use of iterative reconstruction (IR), tube current modulation (TCM), and spectral shaping. We investigated the effect of five independent CT protocols reconstructed with IR on quantitative airway measures and global lung measures using an in vivo large animal model as a human subject surrogate. A control protocol was chosen (NIH-SPIROMICS + TCM) and five independent protocols investigating TCM, low- and ultralow-radiation dose, and spectral shaping. For all scans, quantitative global parenchymal measurements (mean, median and standard deviation of the parenchymal HU, along with measures of emphysema) and global airway measurements (number of segmented airways and pi10) were generated. In addition, selected individual airway measurements (minor and major inner diameter, wall thickness, inner and outer area, inner and outer perimeter, wall area fraction, and inner equivalent circle diameter) were evaluated. Comparisons were made between control and target protocols using difference and repeatability measures. Estimated CT volume dose index (CTDIvol) across all protocols ranged from 7.32 mGy to 0.32 mGy. Low- and ultralow-dose protocols required more manual editing and resolved fewer airway branches; yet, comparable pi10 whole lung measures were observed across all protocols. Similar trends in acquired parenchymal and airway measurements were observed across all protocols, with increased measurement differences using the ultralow-dose protocols. However, for small airways (1.9 ± 0.2 mm) and medium airways (5.7 ± 0.4 mm), the measurement differences across all protocols were comparable to the control protocol repeatability across breath holds. Diameters, wall thickness, wall area fraction

  6. ProSeal laryngeal mask airway as an alternative to standard endotracheal tube in securing upper airway in the patients undergoing beating-heart coronary artery bypass grafting

    Directory of Open Access Journals (Sweden)

    Kalpana Shah

    2017-01-01

    Full Text Available Background: ProSeal laryngeal mask airways (PLMAs are routinely used after failed tracheal intubation as airway rescue, facilitating tracheal intubation by acting as a conduit and to secure airway during emergencies. In long duration surgeries, use of endotracheal tube (ETT is associated with various hemodynamic complications, which are minimally affected during PLMA use. However, except for few studies, there are no significant data available that promote the use of laryngeal mask during cardiac surgery. This prospective study was conducted with the objective of demonstrating the advantages of PLMA over ETT in the patients undergoing beating-heart coronary artery bypass graft (CABG. Methodology: This prospective, interventional study was carried out in 200 patients who underwent beating-heart CABG. Patients were randomized in equal numbers to either ETT group or PLMA group, and various hemodynamic and respiratory parameters were observed at different time points. Results: Patients in PLMA group had mean systolic blood pressure 126.10 ± 5.31 mmHg compared to the patients of ETT group 143.75 ± 6.02 mmHg. Pulse rate in the PLMA group was less (74.52 ± 10.79 per min (P < 0.05 compared to ETT group (81.72 ± 9.8. Thus, hemodynamic changes were significantly lower (P < 0.05 in PLMA than in ETT group. Respiratory parameters such as oxygen saturation, pressure CO 2 (pCO 2 , peak airway pressure, and lung compliance were similar to ETT group at all evaluation times. The incidence of adverse events was also lower in PLMA group. Conclusion: In experience hand, PLMA offers advantages over the ETT in airway management in the patients undergoing beating-heart CABG.

  7. Anaesthesia and subglottic airway obstruction

    African Journals Online (AJOL)

    2009-07-14

    Jul 14, 2009 ... Introduction. Surgery on the upper airway remains challenging for both surgeon and ... from her upper airway obstruction rather than asthma.1 She had made a long ... patient was well oxygenated with oxygen saturation above. 95%. .... Difficulties relate to tidal volume measurement, CO2 detection and the.

  8. 75 FR 13079 - Action Affecting Export Privileges; MAHAN AIRWAYS; Mahan Airways, Mahan Tower, No. 21, Azadegan...

    Science.gov (United States)

    2010-03-18

    ... Regulations and TDO, a United Kingdom court found Mahan Airways in contempt of court on February 1, 2010, for... contempt finding against Mahan Airways in the U.K. litigation, which I understand is still ongoing. I note...

  9. Diagnostic accuracy of anaesthesiologists' prediction of difficult airway management in daily clinical practice

    DEFF Research Database (Denmark)

    Nørskov, A K; Rosenstock, C V; Wetterslev, J

    2015-01-01

    Both the American Society of Anesthesiologists and the UK NAP4 project recommend that an unspecified pre-operative airway assessment be made. However, the choice of assessment is ultimately at the discretion of the individual anaesthesiologist. We retrieved a cohort of 188 064 cases from the Danish...

  10. Recurrent airway obstructions in a patient with benign tracheal stenosis and a silicone airway stent: a case report

    Science.gov (United States)

    Sriram, KB; Robinson, PC

    2008-01-01

    Airway stents (silicone and metal stents) are used to treat patients with benign tracheal stenosis, who are symptomatic and in whom tracheal surgical reconstruction has failed or is not appropriate. However airway stents are often associated with complications such as migration, granuloma formation and mucous hypersecretion, which cause significant morbidity, especially in patients with benign tracheal stenosis and relatively normal life expectancy. We report a patient who had frequent critical airway obstructions over 8 years due to granuloma and mucus hypersecretion in a silicone airway stent. The problem was resolved when the silicone stent was removed and replaced with a covered self expanding metal stent. PMID:18840299

  11. Advanced imaging in acute stroke management-Part I: Computed tomographic.

    Science.gov (United States)

    Saini, Monica; Butcher, Ken

    2009-01-01

    Neuroimaging is fundamental to stroke diagnosis and management. Non-contrast computed tomography (NCCT) has been the primary imaging modality utilized for this purpose for almost four decades. Although NCCT does permit identification of intracranial hemorrhage and parenchymal ischemic changes, insights into blood vessel patency and cerebral perfusion are limited. Advances in reperfusion strategies have made identification of potentially salvageable brain tissue a more practical concern. Advances in CT technology now permit identification of acute and chronic arterial lesions, as well as cerebral blood flow deficits. This review outlines principles of advanced CT image acquisition and its utility in acute stroke management.

  12. Licensed bases management for advanced nuclear plants

    International Nuclear Information System (INIS)

    O'Connell, J.; Rumble, E.; Rodwell, E.

    2001-01-01

    Prospective Advanced Nuclear Plant (ANP) owners must have high confidence that the integrity of the licensed bases (LB) of a plant will be effectively maintained over its life cycle. Currently, licensing engineers use text retrieval systems, database managers, and checklists to access, update, and maintain vast and disparate licensing information libraries. This paper describes the demonstration of a ''twin-engine'' approach that integrates a program from the emerging class of concept searching tools with a modern Product Data Management System (PDMS) to enhance the management of LB information for an example ANP design. (author)

  13. Licensed bases management for advanced nuclear plants

    Energy Technology Data Exchange (ETDEWEB)

    O' Connell, J [Duke Engineering and Services, Marlborough, MA (United States); Rumble, E; Rodwell, E [EPRI, Palo Alto, CA (United States)

    2001-07-01

    Prospective Advanced Nuclear Plant (ANP) owners must have high confidence that the integrity of the licensed bases (LB) of a plant will be effectively maintained over its life cycle. Currently, licensing engineers use text retrieval systems, database managers, and checklists to access, update, and maintain vast and disparate licensing information libraries. This paper describes the demonstration of a ''twin-engine'' approach that integrates a program from the emerging class of concept searching tools with a modern Product Data Management System (PDMS) to enhance the management of LB information for an example ANP design. (author)

  14. [Crisis management in pediatric anesthesia].

    Science.gov (United States)

    Takeuchi, Mamoru; Otsuka, Yoji; Taga, Naoyuki; Sato, Yuki; Iwai, Hidetaka; Okada, Osamu

    2009-05-01

    We describe the risk management of pediatric anesthesia. The most important risk management of pediatric anesthesia is airway and temperature management. Neonates and infants easily become hypoxic due to their insufficient functional residual capacity. Therefore airway management is most important not only during induction of anesthesia but also during maintenance of anesthesia and extubation. The management of patients' temperature, including control of room temperature should be taken into consideration. In addition, careful attention should be paid not to introduce air bubbles in any lines, especially in patients with congenital heart diseases.

  15. Comparison of the Force Required for Dislodgement Between Secured and Unsecured Airways.

    Science.gov (United States)

    Davenport, Curtis; Martin-Gill, Christian; Wang, Henry E; Mayrose, James; Carlson, Jestin N

    2018-05-01

    Airway device placement and maintenance are of utmost importance when managing critically ill patients. The best method to secure airway devices is currently unknown. We sought to determine the force required to dislodge 4 types of airways with and without airway securing devices. We performed a prospective study using 4 commonly used airway devices (endotracheal tube [ETT], laryngeal mask airway [LMA], King laryngeal tube [King], and iGel) performed on 5 different mannequin models. All devices were removed twice per mannequin in random order, once unsecured and once secured as per manufacturers' recommendations; Thomas Tube Holder (Laerdal, Stavanger, Norway) for ETT, LMA, and King; custom tube holder for iGel. A digital force measuring device was attached to the exposed end of the airway device and gradually pulled vertically and perpendicular to the mannequin until the tube had been dislodged, defined as at least 4 cm of movement. Dislodgement force was reported as the maximum force recorded during dislodgement. We compared the relative difference in the secured and unsecured force for each device and between devices using a random-effects regression model accounting for variability in the manikins. The median dislodgment forces (interquartile range [IQR]) in pounds for each secured device were: ETT 13.3 (11.6, 14.1), LMA 16.6 (13.9, 18.3), King 21.7 (16.9, 25.1), and iGel 8 (6.8, 8.3). The median dislodgement forces for each unsecured device were: ETT 4.5 (4.3, 5), LMA 8.4 (6.8, 10.7), King 10.6 (8.2, 11.5), and iGel 3.9 (3.2, 4.2). The relative difference in dislodgement forces (95% confidence intervals) were higher for each device when secured: ETT 8.6 (6.2 to 11), LMA 8.8 (4.6 to 13), King 12.1 (7.2 to 16.6), iGel 4 (1.1 to 6.9). When compared to secured ETT, the King required greater dislodgement force (relative difference 8.6 [4.5-12.7]). The secured iGel required less force than the secured ETT (relative difference -4.8 [-8.9 to -0.8]). Compared with a

  16. New frontiers in CT imaging of airway disease

    International Nuclear Information System (INIS)

    Grenier, Philippe A.; Beigelman-Aubry, Catherine; Fetita, Catalin; Preteux, Francoise; Brauner, Michel W.; Lenoir, Stephane

    2002-01-01

    Combining helical volumetric CT acquisition and thin-slice thickness during breath hold provides an accurate assessment of both focal and diffuse airway diseases. With multiple detector rows, compared with single-slice helical CT, multislice CT can cover a greater volume, during a simple breath hold, and with better longitudinal and in-plane spatial resolution and improved temporal resolution. The result in data set allows the generation of superior multiplanar and 3D images of the airways, including those obtained from techniques developed specifically for airway imaging, such as virtual bronchography and virtual bronchoscopy. Complementary CT evaluation at suspended or continuous full expiration is mandatory to detect air trapping that is a key finding for depicting an obstruction on the small airways. Indications for CT evaluation of the airways include: (a) detection of endobronchial lesions in patients with an unexplained hemoptysis; (b) evaluation of extent of tracheobronchial stenosis for planning treatment and follow-up; (c) detection of congenital airway anomalies revealed by hemoptysis or recurrent infection; (d) detection of postinfectious or postoperative airway fistula or dehiscence; and (e) diagnosis and assessment of extent of bronchiectasis and small airway disease. Improvement in image analysis technique and the use of spirometrically control of lung volume acquisition have made possible accurate and reproducible quantitative assessment of airway wall and lumen areas and lung density. This contributes to better insights in physiopathology of obstructive lung disease, particularly in chronic obstructive pulmonary disease and asthma. (orig.)

  17. Dioscorin pre-treatment protects A549 human airway epithelial cells from hydrogen peroxide-induced oxidative stress.

    Science.gov (United States)

    Hsu, Jeng-Yuan; Chu, Jao-Jia; Chou, Ming-Chih; Chen, Ya-Wen

    2013-10-01

    Hydrogen peroxide (H(2)O(2)) is a highly reactive oxygen species involved in lung and bronchial epithelium injury. Increased H(2)O(2) levels have been reported in expired breath condensates of patients with inflammatory airway diseases such as chronic obstructive pulmonary disease. Protecting airway epithelial cells from oxidative stress is an important task in the prevention and management of airway diseases. Previous studies demonstrate that yam (Dioscorea batatas Decne) has antioxidant and anti-trypsin activities. This study evaluated the validity of dioscorin in vitro. The results showed that dioscorin attenuated the alteration of H(2)O(2) on G2/M cell cycle arrest. This might be associated with the activation of IκB and subsequent inactivation of NF-κB. Furthermore, dioscorin suppressed IL-8 secretion and reduced changes of adhesion molecule expressions in H(2)O(2)-injured A549 cells. These results help in understanding the potential of traditional Chinese herbal medicine as treatment for airway inflammatory diseases.

  18. Managing occupations in everyday life for people with advanced cancer living at home.

    Science.gov (United States)

    Peoples, Hanne; Brandt, Åse; Wæhrens, Eva E; la Cour, Karen

    2017-01-01

    People with advanced cancer are able to live for extended periods of time. Advanced cancer can cause functional limitations influencing the ability to manage occupations. Although studies have shown that people with advanced cancer experience occupational difficulties, there is only limited research that specifically explores how these occupational difficulties are managed. To describe and explore how people with advanced cancer manage occupations when living at home. A sub-sample of 73 participants from a larger occupational therapy project took part in the study. The participants were consecutively recruited from a Danish university hospital. Qualitative interviews were performed at the homes of the participants. Content analysis was applied to the data. Managing occupations were manifested in two main categories; (1) Conditions influencing occupations in everyday life and (2) Self-developed strategies to manage occupations. The findings suggest that people with advanced cancer should be supported to a greater extent in finding ways to manage familiar as well as new and more personally meaningful occupations to enhance quality of life.

  19. Airway contractility and remodeling : Links to asthma symptoms

    NARCIS (Netherlands)

    West, Adrian R.; Syyong, Harley T.; Siddiqui, Sana; Pascoe, Chris D.; Murphy, Thomas M.; Maarsingh, Harm; Deng, Linhong; Maksym, Geoffrey N.; Bosse, Ynuk

    Respiratory symptoms are largely caused by obstruction of the airways. In asthma, airway narrowing mediated by airway smooth muscle (ASM) contraction contributes significantly to obstruction. The spasmogens produced following exposure to environmental triggers, such as viruses or allergens, are

  20. Craniofacial and maxillary anomalies: Anesthetic implications and management

    Directory of Open Access Journals (Sweden)

    Sukhminder Jit Singh Bajwa

    2014-01-01

    Full Text Available The advancement in the craniofacial surgery has imposed challenges on the attending anesthesiologist for the successful conduct reconstructive surgery. The anesthesiologist remains a key person in the multidisciplinary tasks involved in such surgery. Most of these patients belong to smaller age group and have difficult airway due to various syndromes associated with it. The other major problems faced by the anesthesiologist in such surgery are intra-operative hypothermia due to prolonged surgery and significant blood loss as well as fluid shifts associated with it. A well-equipped intensive care unit is a must for the post-operative care of such patients. Even the adult patients coming for maxillofacial trauma surgery require careful vigilance both intra-operatively as well as post-operatively due to frequent difficult airway associated with it. A careful pre-operative evaluation and discussion with the surgeons, proper planning for airway management, intra-operative care and post-operative intensive care backup is required for the successful outcome in these surgeries. The current review is an attempt to describe in short the important anesthesia aspects and challenges related to various cranio-maxillary lesions.

  1. An Official American Thoracic Society Research Statement : Current Challenges Facing Research and Therapeutic Advances in Airway Remodeling

    NARCIS (Netherlands)

    Prakash, Y S; Halayko, Andrew J; Gosens, Reinoud; Panettieri Jr., Reynold A; Camoretti-Mercado, Blanca; Penn, Raymond B; Burgess, Janette K

    2017-01-01

    BACKGROUND: Airway remodeling (AR) is a prominent feature of asthma and other obstructive lung diseases that is minimally affected by current treatments. The goals of this Official American Thoracic Society (ATS) Research Statement are to discuss the scientific, technological, economic, and

  2. Diagnosis of bronchiectasis and airway wall thickening in children with cystic fibrosis: Objective airway-artery quantification

    NARCIS (Netherlands)

    W. Kuo-Kim (WieYing); M. de Bruijne (Marleen); J. Petersen (Jens); K. Nasserinejad (Kazem); Ozturk, H. (Hadiye); Chen, Y. (Yong); A. Perez-Rovira (Adria); H.A.W.M. Tiddens (Harm)

    2017-01-01

    textabstractObjectives: To quantify airway and artery (AA)-dimensions in cystic fibrosis (CF) and control patients for objective CT diagnosis of bronchiectasis and airway wall thickness (AWT). Methods: Spirometer-guided inspiratory and expiratory CTs of 11 CF and 12 control patients were collected

  3. Airway basement membrane perimeter in human airways is not a constant; potential implications for airway remodeling in asthma.

    Science.gov (United States)

    McParland, Brent E; Paré, Peter D; Johnson, Peter R A; Armour, Carol L; Black, Judith L

    2004-08-01

    Many studies that demonstrate an increase in airway smooth muscle in asthmatic patients rely on the assumption that bronchial internal perimeter (P(i)) or basement membrane perimeter (P(bm)) is a constant, i.e., not affected by fixation pressure or the degree of smooth muscle shortening. Because it is the basement membrane that has been purported to be the indistensible structure, this study examines the assumption that P(bm) is not affected by fixation pressure. P(bm) was determined for the same human airway segment (n = 12) fixed at distending pressures of 0 cmH(2)O and 21 cmH(2)O in the absence of smooth muscle tone. P(bm) for the segment fixed at 0 cmH(2)O was determined morphometrically, and the P(bm) for the same segment, had the segment been fixed at 21 cmH(2)O, was predicted from knowing the luminal volume and length of the airway when distended to 21 cmH(2)O (organ bath-derived P(i)). To ensure an accurate transformation of the organ bath-derived P(i) value to a morphometry-derived P(bm) value, had the segment been fixed at 21 cmH(2)O, the relationship between organ bath-derived P(i) and morphometry-derived P(bm) was determined for five different bronchial segments distended to 21 cmH(2)O and fixed at 21 cmH(2)O (r(2) = 0.99, P < 0.0001). Mean P(bm) for bronchial segments fixed at 0 cmH(2)O was 9.4 +/- 0.4 mm, whereas mean predicted P(bm), had the segments been fixed at 21 cmH(2)O, was 14.1 +/- 0.5 mm (P < 0.0001). This indicates that P(bm) is not a constant when isolated airway segments without smooth muscle tone are fixed distended to 21 cmH(2)O. The implication of these results is that the increase in smooth muscle mass in asthma may have been overestimated in some previous studies. Therefore, further studies are required to examine the potential artifact using whole lungs with and without abolition of airway smooth muscle tone and/or inflation.

  4. Ectopic Intratracheal Thyroid: A Rare Cause of Airway Obstruction

    Directory of Open Access Journals (Sweden)

    Waheed Rahman

    2018-01-01

    Full Text Available Ectopic intratracheal thyroid tissue (EITT is a rare abnormality with only limited cases reported so far. The presenting symptoms can be very similar to those of bronchial asthma. We discuss the case of a 29-year-old man with subglottic ectopic thyroid, with a history of thyroid surgery for goiter, which has been managed with laser-assisted endoscopic approach. We have also included presenting symptoms, pathophysiology, diagnosis, and management of EITT. We aim to include EITT in the differentials of airway obstruction, particularly in those patients who have goiter or previous thyroid surgeries.

  5. Airway somatosensory deficits and dysphagia in Parkinson's disease.

    Science.gov (United States)

    Hammer, Michael J; Murphy, Caitlin A; Abrams, Trisha M

    2013-01-01

    Individuals with Parkinson's disease (PD) often experience substantial impairment of swallow control, and are typically unaware of the presence or severity of their impairments suggesting that these individuals may also experience airway sensory deficits. However, the degree to which impaired swallow function in PD may relate to airway sensory deficits has yet to be formally tested. The purpose of this study was to examine whether airway sensory function is associated with swallow impairment in PD. Eighteen PD participants and 18 healthy controls participated in this study and underwent endoscopic assessment of airway somatosensory function, endoscopic assessment of swallow function, and clinical ratings of swallow and disease severity. PD participants exhibited abnormal airway somatosensory function and greater swallow impairment compared with healthy controls. Swallow and sensory deficits in PD were correlated with disease severity. Moreover, PD participants reported similar self-rated swallow function as healthy controls, and swallow deficits were correlated with sensory function suggesting an association between impaired sensory function and poor self-awareness of swallow deficits in PD. These results suggest that control of swallow is influenced by airway somatosensory function, that swallow-related deficits in PD are related to abnormal somatosensation, and that swallow and airway sensory function may degrade as a function of disease severity. Therefore, the basal ganglia and related neural networks may play an important role to integrate airway sensory input for swallow-related motor control. Furthermore, the airway deficits observed in PD suggest a disintegration of swallow-related sensory and motor control.

  6. Results of endoscopic surgery and intralesional steroid therapy for airway compromise due to tracheobronchial Wegener's granulomatosis

    Directory of Open Access Journals (Sweden)

    S. A. R. Nouraei

    2008-04-01

    Full Text Available Background: Upper airway compromise due to tracheobronchial stenosis commonly occurs in patients with Wegener's Granulomatosis (WG. There is at present no consensus on the optimal management of this life-threatening condition. Objective: To assess the results of laryngo-tracheo-bronchoscopy, intralesional steroid therapy, laser surgery, and dilatation in managing obstructive tracheobronchial WG. Methods: Records of eighteen previously-untreated stridulous patients with obstructive tracheobronchial WG, treated between 2004 and 2006 were prospectively recorded on an airway database and retrospectively reviewed. Information about patient and lesion characteristics and treatment details were recorded. Treatment progress was illustrated using a timeline plot, and intervention-free intervals were calculated with actuarial analysis. Results: There were nine males and the average age at presentation was 40 (16 years [range 13–74]. There were thirteen patients with tracheal, and five patients with tracheal and bronchial lesions. The average tracheal lesion height was 8 (3 mm, located 23 (9 mm below the glottis. There were 1, 10 and 7 Myer-Cotton grade I, II and III lesions respectively. Mean intervention-free interval following minimally-invasive treatment was 26 (2.8 months. Following endobronchial therapy the median intervention-free interval was 22 months (p>0.8 vs. tracheal lesions. No patient required a tracheostomy or endoluminal stenting. Conclusions: Intralesional steroid therapy and conservative endoluminal surgery is an effective strategy for treating airway compromise due to active tracheal and bronchial WG, obviating the need for airway bypass or stenting. We recommend the combination of endotracheal dilatation, conservative laser surgery and steroid therapy as the standard of care for treating airway compromise due to obstructive tracheobronchial WG.

  7. Licensed bases management for advanced nuclear plants

    Energy Technology Data Exchange (ETDEWEB)

    O' Connell, J. [Duke Engineering and Services, Marlborough, MA (United States); Rumble, E.; Rodwell, E. [EPRI, Palo Alto, CA (United States)

    2001-07-01

    Prospective Advanced Nuclear Plant (ANP) owners must have high confidence that the integrity of the licensed bases (LB) of a plant will be effectively maintained over its life cycle. Currently, licensing engineers use text retrieval systems, database managers, and checklists to access, update, and maintain vast and disparate licensing information libraries. This paper describes the demonstration of a ''twin-engine'' approach that integrates a program from the emerging class of concept searching tools with a modern Product Data Management System (PDMS) to enhance the management of LB information for an example ANP design. (author)

  8. Advanced alarm management system

    International Nuclear Information System (INIS)

    Easter, J.R.

    1995-01-01

    The Westinghouse Advanced Alarm Management System (AWARE) is one of the Man-Machine Design Interfaces (MMI) which has great flexibility with regard to hardware type and configuration, alarm system concept, plant scope, engineering scope and installation. The AWARE System provides the capability to better manage the quantity prioritization and presentation of real-time process alarm messages in the control room. The messages are specific, precise and dynamic. The AWARE System can provide a large reduction in the number of messages that the control room staff must address at any one time, thus making the alarm message system a useful tool for the operators during situations that normally produce a high volume of messages as well as improving the clarity of the presentation of process abnormalities during small disturbances. The operating staff is now provided with the basis for a better understanding of the current plant state and for taking the appropriate control actions. (2 refs., 3 figs.)

  9. Inherent and antigen-induced airway hyperreactivity in NC mice

    Directory of Open Access Journals (Sweden)

    Tetsuto Kobayashi

    1999-01-01

    Full Text Available In order to clarify the airway physiology of NC mice, the following experiments were carried out. To investigate inherent airway reactivity, we compared tracheal reactivity to various chemical mediators in NC, BALB/c, C57BL/6 and A/J mice in vitro. NC mice showed significantly greater reactivity to acetylcholine than BALB/c and C57BL/6 mice and a reactivity comparable to that of A/J mice, which are known as high responders. Then, airway reactivity to acetylcholine was investigated in those strains in vivo. NC mice again showed comparable airway reactivity to that seen in A/J mice and a significantly greater reactivity than that seen in BALB/c and C57BL/6 mice. To investigate the effects of airway inflammation on airway reactivity to acetylcholine in vivo, NC and BALB/c mice were sensitized to and challenged with antigen. Sensitization to and challenge with antigen induced accumulation of inflammatory cells, especially eosinophils, in lung and increased airway reactivity in NC and BALB/c mice. These results indicate that NC mice exhibit inherent and antigen-induced airway hyperreactivity. Therefore, NC mice are a suitable strain to use in investigating the mechanisms underlying airway hyperreactivity and such studies will provide beneficial information for understanding the pathophysiology of asthma.

  10. Structural integrity analyses: can we manage the advances?

    International Nuclear Information System (INIS)

    Sauve, R.

    2006-01-01

    Engineering has been one of a number of disciplines in which significant advances in analysis procedures has taken place in the last two decades. In particular, advances in computer technology and engineering software have revolutionized the assessment of component structural integrity for a wide range of applications. A significant development in computational mechanics directly related to computer technology that has had a profound impact on the field of structural integrity is the finite element method. The finite element method has re-defined and expanded the role of structural integrity assessments by providing comprehensive modelling capabilities to engineers involved in design and failure analyses. As computer processing speeds and capacity have increased, so has the role of computer modelling in assessments of component structural integrity. With new product development cycles shrinking, the role of initial testing is being reduced in favour of computer modelling and simulation to assess component life and durability. For ageing structures, the evaluation of remaining life and the impact of degraded structural integrity becomes tractable with the modern advances in computational methods. The areas of structural integrity that have derived great benefit from the advances in numerical techniques include stress analysis, fracture mechanics, dynamics, heat transfer, structural reliability, probabilistic methods and continuum mechanics in general. One of the salient features of the current methods is the ability to handle large complex steady state or transient dynamic problems that exhibit highly non-linear behaviour. With the ever-increasing usage of these advanced methods, the question is posed: Can we manage the advances? Better still are we managing the advances? As with all technological advances that enter mainstream use, comes the need for education, training and certification in the application of these methods, improved quality assurance procedures and

  11. The Tulip GT® airway versus the facemask and Guedel airway: a randomised, controlled, cross-over study by Basic Life Support-trained airway providers in anaesthetised patients.

    Science.gov (United States)

    Shaikh, A; Robinson, P N; Hasan, M

    2016-03-01

    We performed a randomised, controlled, cross-over study of lung ventilation by Basic Life Support-trained providers using either the Tulip GT® airway or a facemask with a Guedel airway in 60 anaesthetised patients. Successful ventilation was achieved if the provider produced an end-tidal CO2 > 3.5 kPa and a tidal volume > 250 ml in two of the first three breaths, within 60 sec and within two attempts. Fifty-seven (95%) providers achieved successful ventilation using the Tulip GT compared with 35 (58%) using the facemask (p Basic Life Support-trained airway providers. © 2015 The Association of Anaesthetists of Great Britain and Ireland.

  12. Airway Inflammation in Chronic Rhinosinusitis with Nasal Polyps and Asthma: The United Airways Concept Further Supported

    DEFF Research Database (Denmark)

    Håkansson, Kåre; Bachert, Claus; Konge, Lars

    2015-01-01

    Background It has been established that patients with chronic rhinosinusitis with nasal polyps (CRSwNP) often have co-existing asthma. Objective We aimed to test two hypotheses: (i) upper and lower airway inflammation in CRSwNP is uniform in agreement with the united airways concept; and (ii) bro...

  13. ProSeal laryngeal mask airway improves oxygenation when used as a conduit prior to laryngoscope guided intubation in bariatric patients

    Directory of Open Access Journals (Sweden)

    Aparna Sinha

    2013-01-01

    Full Text Available Background: The primary objective of this study was to compare the effect of ventilation using the ProSeal TM laryngeal mask airway (PLMA with facemask and oropharyngeal airway (FM, prior to laryngoscopy, on arterial oxygenation in morbidly obese patients undergoing bariatric surgery. Methods: Forty morbidly obese patients were randomly recruited to either PLMA or FM. After pre-oxygenation (FiO 2 1.0 in the ramp position with continuous positive airway pressure of 10 cm H 2 O for 5 min, anaesthesia was induced. Following loss of jaw thrust oropharyngeal airway, the FM and PLMA were inserted. On achieving paralysis, volume control ventilation with PEEP (5 cm H 2 O was initiated. The difficulty in mask ventilation (DMV in FM, number of attempts at PLMA and laryngoscopy were graded (Cormack and Lehane in all patients. Time from onset of laryngoscopy to endotracheal tube confirmation was recorded. Hypoxia was defined as mild (SpO 2 ≤95%, moderate (SpO 2 ≤90% and severe (SpO 2 ≤85%. Results: Significant rise in pO 2 was observed within both groups ( P=0.001, and this was significantly higher in the PLMA ( P=0.0001 when compared between the groups. SpO 2 ≥ 90% ( P=0.018 was seen in 19/20 (95% patients in PLMA and 13/20 (65% in FM at confirmation of tracheal tube. A strong association was found between DMV and Cormack Lehane in the FM group and with number of attempts in the PLMA group. No adverse events were observed. Conclusion: ProSeal TM laryngeal mask airway as conduit prior to laryngoscopy in morbidly obese patients seems effective in increasing oxygen reserves, and can be suggested as a routine airway management technique when managing the airway in the morbidly obese.

  14. Severe angioedema in myxedema coma: a difficult airway in a rare endocrine emergency.

    Science.gov (United States)

    Lee, Christopher H; Wira, Charles R

    2009-10-01

    Myxedema coma is the most lethal manifestation of hypothyroidism. It is a true medical emergency and can result in profound hemodynamic instability and airway compromise. Myxedema coma currently remains a diagnostic challenge due to the rarity of cases seen today, and failure to promptly initiate therapy with replacement thyroid hormone can be fatal. As thyroid hormone therapy can take days or weeks to reverse the manifestations of myxedema coma, interim supportive therapy is critical while awaiting clinical improvement. Some patients will require endotracheal intubation in the emergency department (ED), and physicians should be aware that unanticipated posterior pharyngeal edema in myxedema coma could severely complicate airway management. Although mechanical ventilation is a well-described adjunctive therapy for myxedema coma, reports of the potential difficulty in securing a definitive airway in these patients are rare. We describe a case of an unidentified woman who presented to the ED with myxedema coma requiring urgent endotracheal intubation and was found to have extensive posterior pharyngeal angioedema inconsistent with her relatively benign external examination. This case highlights the typical features of myxedema coma and discusses our necessity for a rescue device in definitive endotracheal tube placement. Emergency physicians should anticipate a potentially difficult airway in all myxedema coma patients regardless of the degree of external facial edema present.

  15. Management of cancer-associated thrombosis in people with advanced disease.

    Science.gov (United States)

    Noble, Simon; Johnson, Miriam J

    2012-06-01

    The management of venous thromboembolism in the cancer population is clearly established. Low molecular weight heparin has a greater efficacy than warfarin in the treatment of cancer-associated thrombosis and is recommended as the preferred therapy. However, the evidence informing these recommendations excluded patients with poor prognosis or performance status, thrombocytopenia, bleeding or brain metastases. Furthermore, there is limited data on the management of venous thromboembolism resistant to anticoagulation, a phenomenon frequently encountered in the advanced cancer population. This paper will review the management of cancer-associated thrombosis with a particular focus on challenging clinical situations faced by palliative care teams looking after patients with advanced disease.

  16. Suppression of Th17-polarized airway inflammation by rapamycin.

    Science.gov (United States)

    Joean, Oana; Hueber, Anja; Feller, Felix; Jirmo, Adan Chari; Lochner, Matthias; Dittrich, Anna-Maria; Albrecht, Melanie

    2017-11-10

    Because Th17-polarized airway inflammation correlates with poor control in bronchial asthma and is a feature of numerous other difficult-to-treat inflammatory lung diseases, new therapeutic approaches for this type of airway inflammation are necessary. We assessed different licensed anti-inflammatory agents with known or expected efficacy against Th17-polarization in mouse models of Th17-dependent airway inflammation. Upon intravenous transfer of in vitro derived Th17 cells and intranasal challenge with the corresponding antigen, we established acute and chronic murine models of Th17-polarised airway inflammation. Consecutively, we assessed the efficacy of methylprednisolone, roflumilast, azithromycin, AM80 and rapamycin against acute or chronic Th17-dependent airway inflammation. Quantifiers for Th17-associated inflammation comprised: bronchoalveolar lavage (BAL) differential cell counts, allergen-specific cytokine and immunoglobulin secretion, as well as flow cytometric phenotyping of pulmonary inflammatory cells. Only rapamycin proved effective against acute Th17-dependent airway inflammation, accompanied by increased plasmacytoid dendritic cells (pDCs) and reduced neutrophils as well as reduced CXCL-1 levels in BAL. Chronic Th17-dependent airway inflammation was unaltered by rapamycin treatment. None of the other agents showed efficacy in our models. Our results demonstrate that Th17-dependent airway inflammation is difficult to treat with known agents. However, we identify rapamycin as an agent with inhibitory potential against acute Th17-polarized airway inflammation.

  17. Managing patients with chronic cough: challenges and solutions

    Directory of Open Access Journals (Sweden)

    Perotin JM

    2018-06-01

    Full Text Available Jeanne-Marie Perotin,1,2 Claire Launois,1 Maxime Dewolf,1 Antoine Dumazet,1 Sandra Dury,1 François Lebargy,1 Valérian Dormoy,2 Gaëtan Deslee1,2 1Department of Respiratory Diseases, University Hospital of Reims, Reims, France; 2INSERM UMRS 1250, University Hospital of Reims, Reims, France Abstract: Chronic cough is a common complaint and a frequent cause of medical consultation. Its management can be difficult. We present here an overview of the current guidelines for the management of chronic cough. Different steps are detailed, including the initial research of an obvious etiology and alert signs that should lead to further investigation of underlying condition. The diagnosis of the most frequent causes: asthma, non-asthmatic eosinophilic bronchitis, gastroesophageal reflux disease and upper airway cough syndrome should be considered, assessed and treated accordingly. Recent advances have been made in the comprehension of refractory chronic cough pathophysiology as well as its pharmacologic and non-pharmacologic treatment, especially speech pathology therapy. Keywords: asthma, gastroesophageal reflux, upper airway cough syndrome, chronic hypersensitivity syndrome, refractory chronic cough, speech pathology therapy

  18. L-ornithine derived polyamines in cystic fibrosis airways.

    Directory of Open Access Journals (Sweden)

    Hartmut Grasemann

    Full Text Available Increased arginase activity contributes to airway nitric oxide (NO deficiency in cystic fibrosis (CF. Whether down-stream products of arginase activity contribute to CF lung disease is currently unknown. The objective of this study was to test whether L-ornithine derived polyamines are present in CF airways and contribute to airway pathophysiology. Polyamine concentrations were measured in sputum of patients with CF and in healthy controls, using liquid chromatography-tandem mass spectrometry. The effect of spermine on airway smooth muscle mechanical properties was assessed in bronchial segments of murine airways, using a wire myograph. Sputum polyamine concentrations in stable CF patients were similar to healthy controls for putrescine and spermidine but significantly higher for spermine. Pulmonary exacerbations were associated with an increase in sputum and spermine levels. Treatment for pulmonary exacerbations resulted in decreases in arginase activity, L-ornithine and spermine concentrations in sputum. The changes in sputum spermine with treatment correlated significantly with changes in L-ornithine but not with sputum inflammatory markers. Incubation of mouse bronchi with spermine resulted in an increase in acetylcholine-induced force and significantly reduced nitric oxide-induced bronchial relaxation. The polyamine spermine is increased in CF airways. Spermine contributes to airways obstruction by reducing the NO-mediated smooth muscle relaxation.

  19. Functional phenotype of airway myocytes from asthmatic airways

    NARCIS (Netherlands)

    Wright, David B.; Trian, Thomas; Siddiqui, Sana; Pascoe, Chris D.; Ojo, Oluwaseun O.; Johnson, Jill R.; Dekkers, Bart G. J.; Dakshinamurti, Shyamala; Bagchi, Rushita; Burgess, Janette K.; Kanabar, Varsha

    In asthma, the airway smooth muscle (ASM) cell plays a central role in disease pathogenesis through cellular changes which may impact on its microenvironment and alter ASM response and function. The answer to the long debated question of what makes a 'healthy' ASM cell become 'asthmatic' still

  20. Role of airway epithelial barrier dysfunction in pathogenesis of asthma.

    Science.gov (United States)

    Gon, Yasuhiro; Hashimoto, Shu

    2018-01-01

    Bronchial asthma is characterized by persistent cough, increased sputum, and repeated wheezing. The pathophysiology underlying these symptoms is the hyper-responsiveness of the airway along with chronic airway inflammation. Repeated injury, repair, and regeneration of the airway epithelium following exposure to environmental factors and inflammation results in histological changes and functional abnormalities in the airway mucosal epithelium; such changes are believed to have a significant association with the pathophysiology of asthma. Damage to the barrier functions of the airway epithelium enhances mucosal permeability of foreign substances in the airway epithelium of patients with asthma. Thus, epithelial barrier fragility is closely involved in releasing epithelial cytokines (e.g., TSLP, IL-25, and IL-33) because of the activation of airway epithelial cells, dendritic cells, and innate group 2 innate lymphoid cells (ILC2). Functional abnormalities of the airway epithelial cells along with the activation of dendritic cells, Th2 cells, and ILC2 form a single immunopathological unit that is considered to cause allergic airway inflammation. Here we use the latest published literature to discuss the potential pathological mechanisms regarding the onset and progressive severity of asthma with regard to the disruption of the airway epithelial function. Copyright © 2017 Japanese Society of Allergology. Production and hosting by Elsevier B.V. All rights reserved.

  1. Educating the Educator: Teaching Airway Adjunct Techniques in Athletic Training

    Science.gov (United States)

    Berry, David C.; Seitz, S. Robert

    2011-01-01

    The 5th edition of the "Athletic Training Education Competencies" ("Competencies") now requires athletic training educators (ATEs) to introduce into the curriculum various types of airway adjuncts including: (1) oropharyngeal airways (OPA), (2) nasopharyngeal airways (NPA), (3) supraglottic airways (SGA), and (4) suction. The addition of these…

  2. Athletic Trainers' Knowledge Regarding Airway Adjuncts

    Science.gov (United States)

    Edler, Jessica R.; Eberman, Lindsey E.; Kahanov, Leamor; Roman, Christopher; Mata, Heather Lynne

    2015-01-01

    Context: Research suggests that knowledge gaps regarding the appropriate use of airway adjuncts exist among various health care practitioners, and that knowledge is especially limited within athletic training. Objective: To determine the relationship between perceived knowledge (PK) and actual knowledge (AK) of airway adjunct use and the…

  3. Sleep apnea is associated with bronchial inflammation and continuous positive airway pressure-induced airway hyperresponsiveness.

    Science.gov (United States)

    Devouassoux, Gilles; Lévy, Patrick; Rossini, Eliane; Pin, Isabelle; Fior-Gozlan, Michèle; Henry, Mireille; Seigneurin, Daniel; Pépin, Jean-Louis

    2007-03-01

    Obstructive sleep apnea syndrome (OSA) is associated with systemic and upper airway inflammation. Pharyngeal inflammation has a potential role in upper airway collapse, whereas systemic inflammation relates to cardiovascular morbidity. However, the presence of an inflammatory involvement of lower airway has been poorly investigated. The aim of the study was to demonstrate an inflammatory process at the bronchial level in patients with OSA and to analyze effects of continuous positive airway pressure (CPAP) application and humidification on bronchial mucosa. The study was conducted by using sequential induced sputum for cell analysis and IL-8 production, nitric oxide exhalation measurement, and methacholine challenge before and after CPAP. Bronchial neutrophilia and a high IL-8 concentration were observed in untreated OSA compared with controls (75% +/- 20% vs 43% +/- 12%, P Obstructive sleep apnea syndrome is associated with bronchial inflammation. Our data demonstrate CPAP effect on the development of AHR, possibly facilitated by the pre-existing inflammation. Both issues should be evaluated during long-term CPAP use. Results showing a spontaneous bronchial inflammation in OSA and the development of a CPAP-related AHR require a long-term follow-up to evaluate consequences on chronic bronchial obstruction.

  4. On the relation of nasal cycling with nasal airway dimensions

    Energy Technology Data Exchange (ETDEWEB)

    Guilmette, R A; Wolff, R K

    1988-12-01

    The size and configuration of the nasal airways of humans change with time as a result of the normal process of congestion/decongestion of the erectile tissue of the nasal mucosa. To determine the extent to which airway areas change in vivo, we used magnetic resonance imaging (MRI) to quantitate both the cross-sectional area and perimeter of coronal sections of the entire nasal airway of a human subject. Changes in airway size or patency were indexed to measured changes in unilateral nasal airway resistance determined by posterior rhino manometry. The results of this study in which two MRI scans were performed for presumed left-side patency and two for right-side patency, showed that changes in nasal airway resistance were difficult to ascribe to systematic changes In the sizes of the airways. (author)

  5. On the relation of nasal cycling with nasal airway dimensions

    International Nuclear Information System (INIS)

    Guilmette, R.A.; Wolff, R.K.

    1988-01-01

    The size and configuration of the nasal airways of humans change with time as a result of the normal process of congestion/decongestion of the erectile tissue of the nasal mucosa. To determine the extent to which airway areas change in vivo, we used magnetic resonance imaging (MRI) to quantitate both the cross-sectional area and perimeter of coronal sections of the entire nasal airway of a human subject. Changes in airway size or patency were indexed to measured changes in unilateral nasal airway resistance determined by posterior rhino manometry. The results of this study in which two MRI scans were performed for presumed left-side patency and two for right-side patency, showed that changes in nasal airway resistance were difficult to ascribe to systematic changes In the sizes of the airways. (author)

  6. Effect of parenchymal stiffness on canine airway size with lung inflation.

    Directory of Open Access Journals (Sweden)

    Robert H Brown

    2010-04-01

    Full Text Available Although airway patency is partially maintained by parenchymal tethering, this structural support is often ignored in many discussions of asthma. However, agonists that induce smooth muscle contraction also stiffen the parenchyma, so such parenchymal stiffening may serve as a defense mechanism to prevent airway narrowing or closure. To quantify this effect, specifically how changes in parenchymal stiffness alter airway size at different levels of lung inflation, in the present study, we devised a method to separate the effect of parenchymal stiffening from that of direct airway narrowing. Six anesthetized dogs were studied under four conditions: baseline, after whole lung aerosol histamine challenge, after local airway histamine challenge, and after complete relaxation of the airways. In each of these conditions, we used High resolution Computed Tomography to measure airway size and lung volume at five different airway pressures (0, 12, 25, 32, and 45 cm H(2O. Parenchymal stiffening had a protective effect on airway narrowing, a fact that may be important in the airway response to deep inspiration in asthma. When the parenchyma was stiffened by whole lung aerosol histamine challenge, at every lung volume above FRC, the airways were larger than when they were directly challenged with histamine to the same initial constriction. These results show for the first time that a stiff parenchyma per se minimizes the airway narrowing that occurs with histamine challenge at any lung volume. Thus in clinical asthma, it is not simply increased airway smooth muscle contraction, but perhaps a lack of homogeneous parenchymal stiffening that contributes to the symptomatic airway hyperresponsiveness.

  7. Link between vitamin D and airway remodeling

    Directory of Open Access Journals (Sweden)

    Berraies A

    2014-04-01

    Full Text Available Anissa Berraies, Kamel Hamzaoui, Agnes HamzaouiPediatric Respiratory Diseases Department, Abderrahmen Mami Hospital, Ariana, and Research Unit 12SP15 Tunis El Manar University, Tunis, TunisiaAbstract: In the last decade, many epidemiologic studies have investigated the link between vitamin D deficiency and asthma. Most studies have shown that vitamin D deficiency increases the risk of asthma and allergies. Low levels of vitamin D have been associated with asthma severity and loss of control, together with recurrent exacerbations. Remodeling is an early event in asthma described as a consequence of production of mediators and growth factors by inflammatory and resident bronchial cells. Consequently, lung function is altered, with a decrease in forced expiratory volume in one second and exacerbated airway hyperresponsiveness. Subepithelial fibrosis and airway smooth muscle cell hypertrophy are typical features of structural changes in the airways. In animal models, vitamin D deficiency enhances inflammation and bronchial anomalies. In severe asthma of childhood, major remodeling is observed in patients with low vitamin D levels. Conversely, the antifibrotic and antiproliferative effects of vitamin D in smooth muscle cells have been described in several experiments. In this review, we briefly summarize the current knowledge regarding the relationship between vitamin D and asthma, and focus on its effect on airway remodeling and its potential therapeutic impact for asthma.Keywords: vitamin D, asthma, airway remodeling, airway smooth muscle, supplementation

  8. Vessel-guided airway segmentation based on voxel classification

    DEFF Research Database (Denmark)

    Lo, Pechin Chien Pau; Sporring, Jon; Ashraf, Haseem

    2008-01-01

    This paper presents a method for improving airway tree segmentation using vessel orientation information. We use the fact that an airway branch is always accompanied by an artery, with both structures having similar orientations. This work is based on a  voxel classification airway segmentation...... method proposed previously. The probability of a voxel belonging to the airway, from the voxel classification method, is augmented with an orientation similarity measure as a criterion for region growing. The orientation similarity measure of a voxel indicates how similar is the orientation...... of the surroundings of a voxel, estimated based on a tube model, is to that of a neighboring vessel. The proposed method is tested on 20 CT images from different subjects selected randomly from a lung cancer screening study. Length of the airway branches from the results of the proposed method are significantly...

  9. Interventions designed using quality improvement methods reduce the incidence of serious airway events and airway cardiac arrests during pediatric anesthesia.

    Science.gov (United States)

    Spaeth, James P; Kreeger, Renee; Varughese, Anna M; Wittkugel, Eric

    2016-02-01

    Although serious complications during pediatric anesthesia are less common than they were 20 years ago, serious airway events continue to occur. Based on Quality Improvement (QI) data from our institution, a QI project was designed to reduce the incidence of serious airway events and airway cardiac arrests. A quality improvement team consisting of members of the Department of Anesthesia was formed and QI data from previous years were analyzed. The QI team developed a Smart Aim, Key Driver Diagram, and specific Interventions that focused on the accessibility of emergency drugs, the use of nondepolarizing muscle relaxants for endotracheal intubation in children 2 years and younger, and the presence of anesthesia providers until emergence from anesthesia in high-risk patients. The percentage of cases where muscle relaxants were utilized in children 2 years and younger for endotracheal intubation and where atropine and succinylcholine were readily available increased at both our base and outpatient facilities. Over the 2.5-year study period, the incidence of serious airway events and airway cardiac arrests was reduced by 44% and 59%, respectively compared to the previous 2-year period. We utilized QI methodology to design and implement a project which led to greater standardization of clinical practice within a large pediatric anesthesia group. Based on an understanding of system issues impacting our clinical practice, we designed and tested interventions that led to a significant reduction in the incidence of serious airway events and airway cardiac arrests. © 2015 John Wiley & Sons Ltd.

  10. Measuring three-dimensional flow structures in the conductive airways using 3D-PTV

    Science.gov (United States)

    Janke, Thomas; Schwarze, Rüdiger; Bauer, Katrin

    2017-10-01

    Detailed information about flow patterns and mass transport in the conductive airways is of crucial interest to improve ventilation strategies as well as targeted drug delivery. Despite a vast number of flow studies in this field, there is still a dearth in experimental data of three-dimensional flow patterns, in particular for the validation of numerical results. Therefore, oscillating flow within a realistic model of the upper human conductive airways is studied here experimentally. The investigated range of Reynolds numbers is Re = 250-2000 and the Womersley number is varied between α = 1.9-5.1, whereby physiological flow at rest conditions is included. In employing the three-dimensional particle tracking velocimetry measurement technique, we can directly visualize airway specific flow structures as well as examine Lagrangian trajectory statistics, which has not been covered to date. The systematic variation of characteristic flow parameters in combination with the advanced visualization technique sheds new light on the mechanisms of evolving flow patterns. By determining Lagrangian properties such as pathline curvature and torsion, we find that both strongly depend on the Reynolds number. Moreover, the probability density function of the curvature reveals a unique shape for certain flow regions and resembles a turbulent like behavior at the small scales.

  11. Practice and prospect of advanced fuel management and fuel technology application in PWR in China

    International Nuclear Information System (INIS)

    Xiao Min; Zhang Hong; Ma Cang; Bai Chengfei; Zhou Zhou; Wang Lei; Xiao Xiaojun

    2015-01-01

    Since Daya Bay nuclear power plant implemented 18-month refueling strategy in 2001, China has completed a series of innovative fuel management and fuel technology projects, including the Ling Ao Advanced Fuel Management (AFM) project (high-burnup quarter core refueling) and the Ningde 18-month refueling project with gadolinium-bearing fuel in initial core. First, this paper gives brief introduction to China's advanced fuel management and fuel technology experience. Second, it introduces practices of the advanced fuel management in China in detail, which mainly focuses on the implementation and progress of the Ningde 18-month refueling project with gadolinium-bearing fuel in initial core. Finally, the paper introduces the practices of advanced fuel technology in China and gives the outlook of the future advanced fuel management and fuel technology in this field. (author)

  12. Occupational upper airway disease: how work affects the nose

    NARCIS (Netherlands)

    Hox, V.; Steelant, B.; Fokkens, W.; Nemery, B.; Hellings, P. W.

    2014-01-01

    Chronic inflammation of the upper airways is common and can arbitrarily be divided into rhinitis and rhinosinusitis. Infection and allergy represent two well-characterized and most frequently diagnosed etiologies of upper airway inflammation. Persistent upper airway inflammation caused by agents

  13. Advancing Sustainable Materials Management: Facts and Figures Report

    Science.gov (United States)

    Each year EPA releases the Advancing Sustainable Materials Management: Facts and Figures report, formerly called Municipal Solid Waste in the United States: Facts and Figures. It includes information on Municipal Solid Waste generation, recycling, an

  14. Fetal tracheolaryngeal airway obstruction: prenatal evaluation by sonography and MRI

    Energy Technology Data Exchange (ETDEWEB)

    Courtier, Jesse; Poder, Liina; Wang, Zhen J.; Westphalen, Antonio C.; Yeh, Benjamin M.; Coakley, Fergus V. [University of California San Francisco, Department of Radiology, San Francisco, CA (United States)

    2010-11-15

    We reviewed the sonographic and MRI findings of tracheolaryngeal obstruction in the fetus. Conditions that can cause tracheolaryngeal obstruction include extrinsic causes such as lymphatic malformation, cervical teratoma and vascular rings and intrinsic causes such as congenital high airway obstruction syndrome (CHAOS). Accurate distinction of these conditions by sonography or MRI can help facilitate parental counseling and management, including the decision to utilize the ex utero intrapartum treatment (EXIT) procedure. (orig.)

  15. Management of foreign bodies in the airway and oesophagus.

    Science.gov (United States)

    Rodríguez, Hugo; Passali, Giulio Cesare; Gregori, Dario; Chinski, Alberto; Tiscornia, Carlos; Botto, Hugo; Nieto, Mary; Zanetta, Adrian; Passali, Desiderio; Cuestas, Giselle

    2012-05-14

    Ingestion and/or aspiration of foreign bodies (FB) are avoidable incidents. Children between 1 and 3 years are common victims for many reasons: exploration of the environment through the mouth, lack of molars which decreases their ability to properly chew food, lack of cognitive capacity to distinguish between edible and inedible objects, and tendency to distraction and to perform other activities, like playing, whilst eating. Most FBs are expelled spontaneously, but a significant percentage impacts the upper aerodigestive tract. Approximately 80% of children's choking episodes are evaluated by pediatricians. The symptoms of aspiration or ingestion of FBs can simulate different paediatric diseases such as asthma, croup or pneumonia, delaying the correct diagnosis. There are three clinical phases both in aspiration and in ingestion of FBs: initial stage (first stage or impaction or FB) shows choking, gagging and paroxysms of coughing, obstruction of the airway (AW), occurring at the time of aspiration or ingestion. These signs calm down when the FB lodges and the reflexes grow weary (second stage or asymptomatic phase). Complications occur in the third stage (also defined as complications' phase), when the obstruction, erosion or infection cause pneumonia, atelectasis, abscess or fever (FB in AW), or dysphagia, mediastinum abscess, perforation or erosion and oesophagus (FB in the oesophagus). The first symptoms to receive medical care may actually represent a complication of impaction of FB. LOCATIONS AND MANAGEMENT: Determining the site of obstruction is important in managing the problem. The location of the FB depends on its characteristics and also on the position of the person at the time of aspiration. Determining the site of obstruction is important in managing the problem. Larynx and trachea have the lowest prevalence, except in children under 1year. They are linked with the most dangerous outcomes, complete obstruction or rupture. Bronchus is the preferred

  16. Avian Influenza Virus Glycoproteins Restrict Virus Replication and Spread through Human Airway Epithelium at Temperatures of the Proximal Airways

    OpenAIRE

    Scull, Margaret A.; Gillim-Ross, Laura; Santos, Celia; Roberts, Kim L.; Bordonali, Elena; Subbarao, Kanta; Barclay, Wendy S.; Pickles, Raymond J.

    2009-01-01

    Transmission of avian influenza viruses from bird to human is a rare event even though avian influenza viruses infect the ciliated epithelium of human airways in vitro and ex vivo. Using an in vitro model of human ciliated airway epithelium (HAE), we demonstrate that while human and avian influenza viruses efficiently infect at temperatures of the human distal airways (37 degrees C), avian, but not human, influenza viruses are restricted for infection at the cooler temperatures of the human p...

  17. Bronchoscopic guidance of endovascular stenting limits airway compression.

    Science.gov (United States)

    Ebrahim, Mohammad; Hagood, James; Moore, John; El-Said, Howaida

    2015-04-01

    Bronchial compression as a result of pulmonary artery and aortic arch stenting may cause significant respiratory distress. We set out to limit airway narrowing by endovascular stenting, by using simultaneous flexible bronchoscopy and graduated balloon stent dilatation, or balloon angioplasty to determine maximum safe stent diameter. Between August 2010 and August 2013, patients with suspected airway compression by adjacent vascular structures, underwent CT or a 3D rotational angiogram to evaluate the relationship between the airway and the blood vessels. If these studies showed close proximity of the stenosed vessel and the airway, simultaneous bronchoscopy and graduated stent re-dilation or graduated balloon angioplasty were performed. Five simultaneous bronchoscopy and interventional catheterization procedures were performed in four patients. Median age/weight was 33 (range 9-49) months and 14 (range 7.6-24) kg, respectively. Three had hypoplastic left heart syndrome, and one had coarctation of the aorta (CoA). All had confirmed or suspected left main stem bronchial compression. In three procedures, serial balloon dilatation of a previously placed stent in the CoA was performed and bronchoscopy was used to determine the safest largest diameter. In the other two procedures, balloon testing with simultaneous bronchoscopy was performed to determine the stent size that would limit compression of the adjacent airway. In all cases, simultaneous bronchoscopy allowed selection of an ideal caliber of the stent that optimized vessel diameter while minimizing compression of the adjacent airway. In cases at risk for airway compromise, flexible bronchoscopy is a useful tool to guide endovascular stenting. Maximum safe stent diameter can be determined without risking catastrophic airway compression. © 2014 Wiley Periodicals, Inc.

  18. Advanced water chemistry management in power plants

    International Nuclear Information System (INIS)

    Regis, V.; Sigon, F.

    1995-01-01

    Advanced water management based on low external impact cycle chemistry technologies and processes, effective on-line water control and monitoring, has been verified to improve water utilization and to reduce plant liquid supply and discharge. Simulations have been performed to optimize system configurations and performances, with reference to a 4 x 320 MWe/once-through boiler/AVT/river cooled power plant, to assess the effectiveness of membrane separation technologies allowing waste water reuse, to enhance water management system design and to compare these solutions on a cost/benefit analysis. 6 refs., 3 figs., 3 tabs

  19. Management of Patients with Advanced Prostate Cancer

    DEFF Research Database (Denmark)

    Gillessen, Silke; Attard, Gerhardt; Beer, Tomasz M

    2018-01-01

    some of these topics. OBJECTIVE: To present the report of APCCC 2017. DESIGN, SETTING, AND PARTICIPANTS: Ten important areas of controversy in APC management were identified: high-risk localised and locally advanced prostate cancer; "oligometastatic" prostate cancer; castration-naïve and castration...... literature review or meta-analysis. The outcomes of the voting had varying degrees of support, as reflected in the wording of this article, as well as in the detailed voting results recorded in Supplementary data. CONCLUSIONS: The presented expert voting results can be used for support in areas of management...

  20. Assessment of airway lesion in obstructive lung diseases by CT

    International Nuclear Information System (INIS)

    Niimi, Akio; Matsumoto, Hisako; Ueda, Tetsuya; Mishima, Michiaki

    2002-01-01

    Airway lesion in obstructive pulmonary diseases, such as asthma or chronic obstructive pulmonary disease (COPD), has recently been assessed quantitatively. Especially in asthma, wall thickening of central airways, and its relation to the severity of disease or airflow obstruction has been clarified. Pathophysiologic importance of peripheral airway lesion has also been highlighted by pathologic or physiologic studies. However, direct evaluation of peripheral airway lesion is beyond resolutional limitation of CT. To assess airway trapping, an indirect CT finding of peripheral airway disease, by quantitative and semiquantitative measures and compare them with clinical indices such as pulmonary function, airway responsiveness, or airway inflammation. Patients with stable asthma (n=20) were studied. HRCT at 3 levels of both lungs were scanned. Low attenuation area (LAA)% and mean lung density were quantitatively assessed by an automatic method. Distribution of mosaic pattern was visually scored semiquantitatively. LAA% and mean lung density at full expiratory phase correlated with the degree of airflow obstruction. Mosaic score at full inspiratory phase correlated with the severity of disease and airflow obstruction. Expiratory/inspiratory ratio of mean lung density was also associated with airway responsiveness or residual volume/total lung capacity (RV/TLC). These CT findings may be useful as markers of asthma pathophysiology. (author)

  1. Specific immune responses against airway epithelial cells in a transgenic mouse-trachea transplantation model for obliterative airway disease

    NARCIS (Netherlands)

    Qu, N; de Haan, A; Harmsen, MC; Kroese, FGM; de Leij, LFMH; Prop, J

    2003-01-01

    Background. Immune injury to airway epithelium is suggested to play a central role in the pathogenesis of obliterative bronchiolitis (OB) after clinical lung transplantation. In several studies, a rejection model of murine trachea transplants is used, resulting in obliterative airway disease (OAD)

  2. Central Airway Obstruction: Benign Strictures, Tracheobronchomalacia, and Malignancy-related Obstruction.

    Science.gov (United States)

    Murgu, Septimiu Dan; Egressy, Katarine; Laxmanan, Balaji; Doblare, Guillermo; Ortiz-Comino, Rosamaria; Hogarth, D Kyle

    2016-08-01

    The purpose of this article is to provide an update on methods for palliating symptoms in patients with histologically benign and malignant central airway obstruction. We review the published literature within the past decade on postintubation, posttracheostomy, and TB- and transplant-related airway strictures; tracheobronchomalacia; and malignant airway obstruction. We review terminology, classification systems, and parameters that impact treatment decisions. The focus is on how airway stent insertion fits into the best algorithm of care. Several case series and cohort studies demonstrate that airway stents improve dyspnea, lung function, and quality of life in patients with airway obstruction. Airway stenting, however, is associated with high rates of adverse events and should be used only when curative open surgical interventions are not feasible or are contraindicated. Copyright © 2016 American College of Chest Physicians. Published by Elsevier Inc. All rights reserved.

  3. Airway registry and training curriculum improve intubation outcomes in the intensive care unit

    Directory of Open Access Journals (Sweden)

    Malo J

    2018-04-01

    Full Text Available Background: Intubation in critically ill patients remains a highly morbid procedure, and the optimal approach is unclear. We sought to improve the safety of intubation by implementing a simulation curriculum and monitoring performance with an airway registry. Methods and Methods: This is a prospective, single-center observational study of all intubations performed by the medical intensive care unit (ICU team over a five-year period. All fellows take part in a simulation curriculum to improve airway management performance and minimize complications. An airway registry form is completed immediately after each intubation to capture relevant patient, operator, and procedural data. Results: Over a five-year period, the medical ICU team performed 1411 intubations. From Year 1 to Year 5, there were significant increases in first-attempt success (72.6 vs. 88.0%, p<0.001, use of video laryngoscopy (72.3 vs. 93.5%, p<0.001, and use of neuromuscular blocking agents (73.5 vs. 88.4%, p<0.001. There were concurrent decreases in rates of desaturation (25.6 vs. 17.1%, p=0.01 and esophageal intubations (5 vs. 1%, p=0.009. Low rates of hypotension (8.3% and cardiac arrest (0.6% were also observed. Conclusions: The safety of intubation in critically ill patients can be markedly improved through joint implementation of an airway registry and simulation curriculum.

  4. Airway remodeling and its reversibility in equine asthma

    Directory of Open Access Journals (Sweden)

    Jean-Pierre Lavoie

    2017-06-01

    Full Text Available Despite effective therapies for controlling its clinical manifestations, human asthma remains an incurable disease. It is now recognized that inflammation induced structural changes (remodeling of the airways are responsible for the progressive loss of lung function in asthmatic patients. However, the peripheral airways, where most of the remodeling occurs in severe asthmatic patients, cannot be safely sampled in humans, and therefore, little is known of the effects of current therapies at reversing the established asthmatic remodeling, especially those occurring in the peripheral airways. Animal models have been studied to unravel etiological, immunopathological, and genetic attributes leading to asthma. However, experiments in which the disease is artificially induced have been shown to have limited translational potential for humans. To the contrary, horses naturally suffer from an asthma-like condition which shares marked similarities with human asthma making this model unique to investigate the kinetics, reversibility, as well as the physiological consequences of tissue remodeling (Bullone and Lavoie 2015. We reported an increased deposition of smooth muscle, collagen and elastic fibers in the peripheral airways of affected horses, which was correlated with the lung function (Herszberg et al., 2006; Setlakwe et al., 2014. The airway subepithelial collagen depositions were almost completely reversed with 6 to 12 months of treatment with either antigen avoidance or inhaled corticosteroids (ICS administration, and there was a modest (30% on average decrease in airway smooth muscle (Leclere et al., 2011. A recent study also found that ICS combined with long-acting ß2-agonists drugs (LABA and ICS monotherapy similarly induced a 30% decrease of the airway smooth muscle mass at 3 months (Buollone, 2017. However, only ICS/LABA and antigen avoidance decreased airway luminal neutrophilia. The findings indicate the enhance therapeutic effect of ICS

  5. Methylene-tetrahydrofolate reductase contributes to allergic airway disease.

    Directory of Open Access Journals (Sweden)

    Kenneth R Eyring

    Full Text Available Environmental exposures strongly influence the development and progression of asthma. We have previously demonstrated that mice exposed to a diet enriched with methyl donors during vulnerable periods of fetal development can enhance the heritable risk of allergic airway disease through epigenetic changes. There is conflicting evidence on the role of folate (one of the primary methyl donors in modifying allergic airway disease.We hypothesized that blocking folate metabolism through the loss of methylene-tetrahydrofolate reductase (Mthfr activity would reduce the allergic airway disease phenotype through epigenetic mechanisms.Allergic airway disease was induced in C57BL/6 and C57BL/6Mthfr-/- mice through house dust mite (HDM exposure. Airway inflammation and airway hyperresponsiveness (AHR were measured between the two groups. Gene expression and methylation profiles were generated for whole lung tissue. Disease and molecular outcomes were evaluated in C57BL/6 and C57BL/6Mthfr-/- mice supplemented with betaine.Loss of Mthfr alters single carbon metabolite levels in the lung and serum including elevated homocysteine and cystathionine and reduced methionine. HDM-treated C57BL/6Mthfr-/- mice demonstrated significantly less airway hyperreactivity (AHR compared to HDM-treated C57BL/6 mice. Furthermore, HDM-treated C57BL/6Mthfr-/- mice compared to HDM-treated C57BL/6 mice have reduced whole lung lavage (WLL cellularity, eosinophilia, and Il-4/Il-5 cytokine concentrations. Betaine supplementation reversed parts of the HDM-induced allergic airway disease that are modified by Mthfr loss. 737 genes are differentially expressed and 146 regions are differentially methylated in lung tissue from HDM-treated C57BL/6Mthfr-/- mice and HDM-treated C57BL/6 mice. Additionally, analysis of methylation/expression relationships identified 503 significant correlations.Collectively, these findings indicate that the loss of folate as a methyl donor is a modifier of

  6. A PAF receptor antagonist inhibits acute airway inflammation and late-phase responses but not chronic airway inflammation and hyperresponsiveness in a primate model of asthma

    Directory of Open Access Journals (Sweden)

    R. H. Gundel

    1992-01-01

    Full Text Available We have examined the effects of a PAF receptor antagonist, WEB 2170, on several indices of acute and chronic airway inflammation and associated changes in lung function in a primate model of allergic asthma. A single oral administration WEB 2170 provided dose related inhibition of the release of leukotriene C4 (LTC4 and prostaglandin D2 (PGD2 recovered and quantified in bronchoalveolar lavage (BAL fluid obtained during the acute phase response to inhaled antigen. In addition, oral WEB 2170 treatment in dual responder primates blocked the acute influx of neutrophils into the airways as well as the associated late-phase airway obstruction occurring 6 h after antigen inhalation. In contrast, a multiple dosing regime with WEB 2170 (once a day for 7 consecutive days failed to reduce the chronic airway inflammation (eosinophilic and associated airway hyperresponsiveness to inhaled methacholine that is characteristic of dual responder monkeys. Thus, we conclude that the generation of PAF following antigen inhalation contributes to the development of lipid mediators, acute airway inflammation and associated late-phase airway obstruction in dual responder primates; however, PAF does not play a significant role in the maintenance of chronic airway inflammation and associated airway hyperresponsiveness in this primate model.

  7. Covered Balloon-Expanding Stents in Airway Stenosis.

    Science.gov (United States)

    Majid, Adnan; Kheir, Fayez; Chung, Jey; Alape, Daniel; Husta, Bryan; Oh, Scott; Folch, Erik

    2017-04-01

    The balloon-expanding stents are widely available but rarely described for use within the tracheobronchial tree. This report describes our experience with these stents in airway stenosis particularly as a lobar salvage therapy. This was a retrospective review of all records in which the balloon-expanding stents were used at a tertiary medical center. Ages, sex, location of stenosis, etiology of stenosis, stent size, duration of stent placement and associated interventions for airway stenosis were recorded. Patient's self-reported respiratory symptoms, dyspnea scale, and radiographic imaging at baseline and after stent placement were also reported. Twenty-one Atrium iCAST stents were inserted in 18 patients with malignant and benign airway disease. The median age was 69.5 years (interquartile range, 53.5 to 74). Most stents (n=20, 95%) were deployed in the lobar airways. There was a significant improvement in the modified Medical Research Council dyspnea scale from median of 3 to 2 (Pstent placement was achieved in 15 patients (83%). No deaths were related to airway stenting complications. Adverse events related to stents included migration (n=2, 9.5%), granulation tissue formation (n=2, 9.5%) and mucus plugging (n=1, 4.8%). Lobar stenting with balloon-expanding metallic stents appears feasible, safe and improves symptoms as well as radiographic atelectasis in patients with lobar airway stenosis in this small case series. Larger studies are needed to confirm this observation and to address long-term safety.

  8. Tracheal and Crico-Tracheal Resection and Anastomosis for Malignancies Involving the Thyroid Gland and the Airway.

    Science.gov (United States)

    Piazza, Cesare; Del Bon, Francesca; Barbieri, Diego; Grazioli, Paola; Paderno, Alberto; Perotti, Pietro; Lombardi, Davide; Peretti, Giorgio; Nicolai, Piero

    2016-02-01

    To evaluate outcomes in different malignancies involving the thyroid and infiltrating the airway submitted to tracheal (TRA) or crico-tracheal resection and anastomosis (CTRA). Retrospective charts review of 27 patients affected by thyroid malignancies involving the airway treated by TRA/CTRA in a single academic institution. Kaplan-Meier curves were used to evaluate the overall (OS) and disease-specific (DSS) survivals and local (LC) and loco-regional control (LRC). Impact on survival of age, comorbidities, previous radiotherapy, types of TRA/CTRA, Shin's stage (II, III, IV), grading (well vs poorly differentiated), and length of airway resected was calculated by the log-rank test. Overall survival and DSS at 3 and 5 years were 82.3% and 71.6%, respectively. Local control and LRC in the entire group were 82.3% at 3 and 5 years. Crico-tracheal resection and anastomosis involving the cricoid arch and plate (type C) and tumor differentiation significantly affected OS and DSS (both P < .001). Type C CTRA and tumor differentiation significantly impacted on LC (P = .002 and P = .009, respectively). Grading and extension of CTRA to the cricoid plate are the most important factors for oncologic outcomes in thyroid malignancies infiltrating the airway. Except for poorly differentiated tumors, TRA/CTRA allows adequate LC even in advanced stage lesions involving the crico-tracheal junction. © The Author(s) 2015.

  9. Effects of Ginger and Its Constituents on Airway Smooth Muscle Relaxation and Calcium Regulation

    Science.gov (United States)

    Siviski, Matthew E.; Zhang, Yi; Xu, Carrie; Hoonjan, Bhupinder; Emala, Charles W.

    2013-01-01

    The prevalence of asthma has increased in recent years, and is characterized by airway hyperresponsiveness and inflammation. Many patients report using alternative therapies to self-treat asthma symptoms as adjuncts to short-acting and long-acting β-agonists and inhaled corticosteroids (ICS). As many as 40% of patients with asthma use herbal therapies to manage asthma symptoms, often without proven efficacy or known mechanisms of action. Therefore, investigations of both the therapeutic and possible detrimental effects of isolated components of herbal treatments on the airway are important. We hypothesized that ginger and its active components induce bronchodilation by modulating intracellular calcium ([Ca2+]i) in airway smooth muscle (ASM). In isolated human ASM, ginger caused significant and rapid relaxation. Four purified constituents of ginger were subsequently tested for ASM relaxant properties in both guinea pig and human tracheas: [6]-gingerol, [8]-gingerol, and [6]-shogaol induced rapid relaxation of precontracted ASM (100–300 μM), whereas [10]-gingerol failed to induce relaxation. In human ASM cells, exposure to [6]-gingerol, [8]-gingerol, and [6]-shogaol, but not [10]-gingerol (100 μM), blunted subsequent Ca2+ responses to bradykinin (10 μM) and S-(−)-Bay K 8644 (10 μM). In A/J mice, the nebulization of [8]-gingerol (100 μM), 15 minutes before methacholine challenge, significantly attenuated airway resistance, compared with vehicle. Taken together, these novel data show that ginger and its isolated active components, [6]-gingerol, [8]-gingerol, and [6]-shogaol, relax ASM, and [8]-gingerol attenuates airway hyperresponsiveness, in part by altering [Ca2+]i regulation. These purified compounds may provide a therapeutic option alone or in combination with accepted therapeutics, including β2-agonists, in airway diseases such as asthma. PMID:23065130

  10. Radioaerosol lung imaging in small airways disease

    Energy Technology Data Exchange (ETDEWEB)

    Weiss, T; Dorow, P; Felix, R

    1981-06-01

    Aerosol inhalation lung imaging was performed in 35 asymptomatic smokers who have been selected on the basis of abnormal findings in small airways pulmonary function tests. Qualitative (image inspection) and quantitative (aerosol distribution index = ADI) analysis of the radioaerosol lung patterns was accomplished. Compared to healthy subjects as well as to patients with chronic obstructive lung disease significant differences of mean aerosol distribution homogeneity were observed. A characteristic type of abnormal aerosol pattern, indicating peripheral airways obstruction, was found in 71% of the patients with small airways disease.

  11. Extraction of airways from CT (EXACT’09)

    DEFF Research Database (Denmark)

    Lo, Pechin Chien Pau; Ginneken, Bram van; Reinhardt, Joseph M.

    2012-01-01

    or not it is a correctly segmented part of the airway tree. Finally, the reference airway trees are constructed by taking the union of all correctly extracted branch segments. Fifteen airway tree extraction algorithms from different research groups are evaluated on a diverse set of 20 chest computed tomography (CT) scans...... of subjects ranging from healthy volunteers to patients with severe pathologies, scanned at different sites, with different CT scanner brands, models, and scanning protocols. Three performance measures covering different aspects of segmentation quality were computed for all participating algorithms. Results...

  12. Role of IRE1α/XBP-1 in Cystic Fibrosis Airway Inflammation

    Directory of Open Access Journals (Sweden)

    Carla M. P. Ribeiro

    2017-01-01

    Full Text Available Cystic fibrosis (CF pulmonary disease is characterized by chronic airway infection and inflammation. The infectious and inflamed CF airway environment impacts on the innate defense of airway epithelia and airway macrophages. The CF airway milieu induces an adaptation in these cells characterized by increased basal inflammation and a robust inflammatory response to inflammatory mediators. Recent studies have indicated that these responses depend on activation of the unfolded protein response (UPR. This review discusses the contribution of airway epithelia and airway macrophages to CF airway inflammatory responses and specifically highlights the functional importance of the UPR pathway mediated by IRE1/XBP-1 in these processes. These findings suggest that targeting the IRE1/XBP-1 UPR pathway may be a therapeutic strategy for CF airway disease.

  13. Individual canine Airway Response Variability to a Deep Inspiration

    Directory of Open Access Journals (Sweden)

    Robert H. Brown

    2011-01-01

    Full Text Available In healthy individuals, a DI can reverse (bronchodilation or prevent (bronchoprotection induced airway constriction. For individuals with asthma or COPD, these effects may be attenuated or absent. Previous work showed that the size and duration of a DI affected the subsequent response of the airways. Also, increased airway tone lead to increased airway size variability. The present study examined how a DI affected the temporal variability in individual airway baseline size and after methacholine challenge in dogs using High-Resolution Computed Tomography. Dogs were anesthetized and ventilated, and on 4 separate days, HRCT scans were acquired before and after a DI at baseline and during a continuous intravenous infusion of methacholine (Mch at 3 dose rates (17, 67, and 200 μg/mm. The Coefficient of Variation was used as an index of temporal variability in airway size. We found that at baseline and the lowest dose of Mch, variability decreased immediately and 5 minutes after the DI ( P < 0.0001. In contrast, with higher doses of Mch, the DI caused a variable response. At a rate of 67 μg/min of Mch, the temporal variability increased after 5 minutes, while at a rate of 200 μg/min of Mch, the temporal variability increased immediately after the DI. Increased airway temporal variability has been shown to be associated with asthma. Although the mechanisms underlying this temporal variability are poorly understood, the beneficial effects of a DI to decrease airway temporal variability was eliminated when airway tone was increased. If this effect is absent in asthmatics, this may suggest a possible mechanism for the loss of bronchoprotective and bronchodilatory effects after a DI in asthma.

  14. Development of a Modular, Provider Customized Airway Trainer

    Science.gov (United States)

    2015-11-25

    data used to evaluate student performance. This transformation was done by the Airway Firmware on an Arduino Leonardo. The Airway Firmware transmitted...USB HID protocol, the Arduino Leonardo was selected. Figure 13: Electronics and Firmware W911NF-13-2-0033 Airway II Final Report...CREST U of MN Nov 2015 Page 12 of 35 The microchip, around which the Arduino Leonardo was built, readily supported USB HID through

  15. Fetal tracheolaryngeal airway obstruction: prenatal evaluation by sonography and MRI

    Science.gov (United States)

    Courtier, Jesse; Poder, Liina; Wang, Zhen J.; Westphalen, Antonio C.; Yeh, Benjamin M.

    2010-01-01

    We reviewed the sonographic and MRI findings of tracheolaryngeal obstruction in the fetus. Conditions that can cause tracheolaryngeal obstruction include extrinsic causes such as lymphatic malformation, cervical teratoma and vascular rings and intrinsic causes such as congenital high airway obstruction syndrome (CHAOS). Accurate distinction of these conditions by sonography or MRI can help facilitate parental counseling and management, including the decision to utilize the ex utero intrapartum treatment (EXIT) procedure. PMID:20737145

  16. [Development of performance evaluation and management system on advanced schistosomiasis medical treatment].

    Science.gov (United States)

    Zhou, Xiao-Rong; Huang, Shui-Sheng; Gong, Xin-Guo; Cen, Li-Ping; Zhang, Cong; Zhu, Hong; Yang, Jun-Jing; Chen, Li

    2012-04-01

    To construct a performance evaluation and management system on advanced schistosomiasis medical treatment, and analyze and evaluate the work of the advanced schistosomiasis medical treatment over the years. By applying the database management technique and C++ programming technique, we inputted the information of the advanced schistosomiasis cases into the system, and comprehensively evaluated the work of the advanced schistosomiasis medical treatment through the cost-effect analysis, cost-effectiveness analysis, and cost-benefit analysis. We made a set of software formula about cost-effect analysis, cost-effectiveness analysis, and cost-benefit analysis. This system had many features such as clear building, easy to operate, friendly surface, convenient information input and information search. It could benefit the performance evaluation of the province's advanced schistosomiasis medical treatment work. This system can satisfy the current needs of advanced schistosomiasis medical treatment work and can be easy to be widely used.

  17. Mucociliary clearance, airway inflammation and nasal symptoms in urban motorcyclists

    Directory of Open Access Journals (Sweden)

    Tereza C.S. Brant

    2014-01-01

    Full Text Available OBJECTIVES: There is evidence that outdoor workers exposed to high levels of air pollution exhibit airway inflammation and increased airway symptoms. We hypothesized that these workers would experience increased airway symptoms and decreased nasal mucociliary clearance associated with their exposure to air pollution. METHODS: In total, 25 non-smoking commercial motorcyclists, aged 18-44 years, were included in this study. These drivers work 8-12 hours per day, 5 days per week, driving on urban streets. Nasal mucociliary clearance was measured by the saccharine transit test; airway acidification was measured by assessing the pH of exhaled breath condensate; and airway symptoms were measured by the Sino-nasal Outcome Test-20 questionnaire. To assess personal air pollution exposure, the subjects used a passive-diffusion nitrogen dioxide (NO2 concentration-monitoring system during the 14 days before each assessment. The associations between NO2 and the airway outcomes were analyzed using the Mann-Whitney test and the Chi-Square test. Clinicaltrials.gov: NCT01976039. RESULTS: Compared with clearance in healthy adult males, mucociliary clearance was decreased in 32% of the motorcyclists. Additionally, 64% of the motorcyclists had airway acidification and 92% experienced airway symptoms. The median personal NO2 exposure level was 75 mg/m3 for these subjects and a significant association was observed between NO2 and impaired mucociliary clearance (p = 0.036. CONCLUSION: Non-smoking commercial motorcyclists exhibit increased airway symptoms and airway acidification as well as decreased nasal mucociliary clearance, all of which are significantly associated with the amount of exposure to air pollution.

  18. Mechanisms of mechanical strain memory in airway smooth muscle.

    Science.gov (United States)

    Kim, Hak Rim; Hai, Chi-Ming

    2005-10-01

    We evaluated the hypothesis that mechanical deformation of airway smooth muscle induces structural remodeling of airway smooth muscle cells, thereby modulating mechanical performance in subsequent contractions. This hypothesis implied that past experience of mechanical deformation was retained (or "memorized") as structural changes in airway smooth muscle cells, which modulated the cell's subsequent contractile responses. We termed this phenomenon mechanical strain memory. Preshortening has been found to induce attenuation of both force and isotonic shortening velocity in cholinergic receptor-activated airway smooth muscle. Rapid stretching of cholinergic receptor-activated airway smooth muscle from an initial length to a final length resulted in post-stretch force and myosin light chain phosphorylation that correlated significantly with initial length. Thus post-stretch muscle strips appeared to retain memory of the initial length prior to rapid stretch (mechanical strain memory). Cytoskeletal recruitment of actin- and integrin-binding proteins and Erk 1/2 MAPK appeared to be important mechanisms of mechanical strain memory. Sinusoidal length oscillation led to force attenuation during oscillation and in subsequent contractions in intact airway smooth muscle, and p38 MAPK appeared to be an important mechanism. In contrast, application of local mechanical strain to cultured airway smooth muscle cells induced local actin polymerization and cytoskeletal stiffening. It is conceivable that deep inspiration-induced bronchoprotection may be a manifestation of mechanical strain memory such that mechanical deformation from past breathing cycles modulated the mechanical performance of airway smooth muscle in subsequent cycles in a continuous and dynamic manner.

  19. Advanced chemistry management system for nuclear power plants

    International Nuclear Information System (INIS)

    Maeda, Katsuji; Kobayashi, Yasuhiro; Nagasawa, Katsumi

    2000-01-01

    Chemistry control in a boiling water reactor (BWR) plant has a close relationship with radiation field buildup, fuel reliability, integrity of plant components and materials, performance of the water treatment systems and radioactive waste generation. Chemistry management in BWR plants has become more important in order to maintain and enhance plant reliability. Adequate chemistry control and management are also essential to establish, maintain, and enhance plant availability. For these reasons, we have developed the advanced chemistry management system for nuclear power plants in order to effectively collect and evaluate a large number of plant operating and chemistry data. (author)

  20. [Acute pulmonary edema in adult caused by tonsillar hypertrophy following removal of laryngeal mask airway].

    Science.gov (United States)

    Iizuka, Toru; Shimoyama, Naohito; Notoya, Atsuko

    2010-12-01

    Negative pressure pulmonary edema (NPPE) has been described after acute airway obstruction. In the following case, we observed a rare occurrence of pulmonary edema caused by chronic tonsillar hypertrophy in a woman following removal of laryngeal mask airway (LMA). A 38-year-old woman with breast cancer underwent mastectomy under general anesthesia using the LMA. With the patient fully awake, the LMA was removed. Abruptly 7 minutes afterward, she showed signs of intense dyspnea, generalized rhonchus and progressive desaturation, and obstructive tonsillar hypertrophy was noticed. Acute lung edema was suspected and treatment started with oxygen therapy, bronchodilators, intravenous corticoids and loop diuretics. She was then intubated to secure airway and provide adequate ventilation with PEEP. Fortunately, the symptoms progressively remitted satisfactorily, and she was subsequently extubated 18 hours later with no complications. NPPE is an infrequent medical emergency and its early diagnosis and recognition are likely to lead to successful management of this potentially serious complication.

  1. A prospective study to evaluate and compare laryngeal mask airway ProSeal and i-gel airway in the prone position.

    Science.gov (United States)

    Taxak, Susheela; Gopinath, Ajith; Saini, Savita; Bansal, Teena; Ahlawat, Mangal Singh; Bala, Manju

    2015-01-01

    Prone position is commonly used to provide surgical access to a variety of surgeries. In view of the advantages of induction of anesthesia in the prone position, we conducted a randomized study to evaluate and compare ProSeal laryngeal mask airway (LMA) and i-gel in the prone position. Totally, 40 patients of either sex as per American Society of Anesthesiologists physical status I or II, between 16 and 60 years of age, scheduled to undergo surgery in prone position were included in the study. After the patients positioned themselves prone on the operating table, anesthesia was induced by the standard technique. LMA ProSeal was used as an airway conduit in group 1 while i-gel was used in group 2. At the end of surgery, the airway device was removed in the same position. Insertion of airway device was successful in first attempt in 16, and 17 cases in ProSeal laryngeal mask airway (PLMA) and i-gel groups, respectively. A second attempt was required to secure the airway in 4 and 3 patients in PLMA and i-gel groups, respectively. The mean insertion time was 21.8 ± 2.70 s for group 1 and 13.1 ± 2.24 s for group 2, the difference being statistically significant (P position. The PLMA has a better seal while insertion is easier with i-gel.

  2. PERCEPTION OF AIRWAY-OBSTRUCTION IN A RANDOM-POPULATION SAMPLE - RELATIONSHIP TO AIRWAY HYPERRESPONSIVENESS IN THE ABSENCE OF RESPIRATORY SYMPTOMS

    NARCIS (Netherlands)

    BRAND, PLP; RIJCKEN, B; SCHOUTEN, JP; KOETER, GH; WEISS, ST; POSTMA, DS

    Subjects with asymptomatic airway hyperresponsiveness in epidemiologic studies may have variable airway obstruction that is not perceived as dyspnea. We tested the hypothesis that such subjects are less likely to report an increase in dyspnea during histamine-induced bronchoconstriction than

  3. Obesity and Airway Dysanapsis in Children with and without Asthma.

    Science.gov (United States)

    Forno, Erick; Weiner, Daniel J; Mullen, James; Sawicki, Gregory; Kurland, Geoffrey; Han, Yueh Ying; Cloutier, Michelle M; Canino, Glorisa; Weiss, Scott T; Litonjua, Augusto A; Celedón, Juan C

    2017-02-01

    For unclear reasons, obese children with asthma have higher morbidity and reduced response to inhaled corticosteroids. To assess whether childhood obesity is associated with airway dysanapsis (an incongruence between the growth of the lungs and the airways) and whether dysanapsis is associated with asthma morbidity. We examined the relationship between obesity and dysanapsis in six cohorts of children with and without asthma, as well as the relationship between dysanapsis and clinical outcomes in children with asthma. Adjusted odds ratios (ORs) were calculated for each cohort and in a combined analysis of all cohorts; longitudinal analyses were also performed for cohorts with available data. Hazard ratios (HRs) for clinical outcomes were calculated for children with asthma in the Childhood Asthma Management Program. Being overweight or obese was associated with dysanapsis in both the cross-sectional (OR, 1.95; 95% confidence interval [CI], 1.62-2.35 [for overweight/obese compared with normal weight children]) and the longitudinal (OR, 4.31; 95% CI, 2.99-6.22 [for children who were overweight/obese at all visits compared with normal weight children]) analyses. Dysanapsis was associated with greater lung volumes (FVC, vital capacity, and total lung capacity) and lesser flows (FEV 1 and forced expiratory flow, midexpiratory phase), and with indicators of ventilation inhomogeneity and anisotropic lung and airway growth. Among overweight/obese children with asthma, dysanapsis was associated with severe disease exacerbations (HR, 1.95; 95% CI, 1.38-2.75) and use of systemic steroids (HR, 3.22; 95% CI, 2.02-5.14). Obesity is associated with airway dysanapsis in children. Dysanapsis is associated with increased morbidity among obese children with asthma and may partly explain their reduced response to inhaled corticosteroids.

  4. Secreted osteopontin is highly polymerized in human airways and fragmented in asthmatic airway secretions.

    Directory of Open Access Journals (Sweden)

    Mehrdad Arjomandi

    Full Text Available Osteopontin (OPN is a member of the small integrin-binding ligand N-linked glycoprotein (SIBLING family and a cytokine with diverse biologic roles. OPN undergoes extensive post-translational modifications, including polymerization and proteolytic fragmentation, which alters its biologic activity. Recent studies suggest that OPN may contribute to the pathogenesis of asthma.To determine whether secreted OPN (sOPN is polymerized in human airways and whether it is qualitatively different in asthma, we used immunoblotting to examine sOPN in bronchoalveolar lavage (BAL fluid samples from 12 healthy and 21 asthmatic subjects (and in sputum samples from 27 healthy and 21 asthmatic subjects. All asthmatic subjects had mild to moderate asthma and abstained from corticosteroids during the study. Furthermore, we examined the relationship between airway sOPN and cellular inflammation.We found that sOPN in BAL fluid and sputum exists in polymeric, monomeric, and cleaved forms, with most of it in polymeric form. Compared to healthy subjects, asthmatic subjects had proportionately less polymeric sOPN and more monomeric and cleaved sOPN. Polymeric sOPN in BAL fluid was associated with increased alveolar macrophage counts in airways in all subjects.These results suggest that sOPN in human airways (1 undergoes extensive post-translational modification by polymerization and proteolytic fragmentation, (2 is more fragmented and less polymerized in subjects with mild to moderate asthma, and (3 may contribute to recruitment or survival of alveolar macrophages.

  5. Development of advanced spent fuel management process

    International Nuclear Information System (INIS)

    Park, Seong Won; Shin, Y. J.; Cho, S. H.

    2004-03-01

    The research on spent fuel management focuses on the maximization of the disposal efficiency by a volume reduction, the improvement of the environmental friendliness by the partitioning and transmutation of the long lived nuclides, and the recycling of the spent fuel for an efficient utilization of the uranium source. In the second phase which started in 2001, the performance test of the advanced spent fuel management process consisting of voloxidation, reduction of spent fuel and the lithium recovery process has been completed successfully on a laboratory scale. The world-premier spent fuel reduction hot test of a 5 kgHM/batch has been performed successfully by joint research with Russia and the valuable data on the actinides and FPs material balance and the characteristics of the metal product were obtained with experience to help design an engineering scale reduction system. The electrolytic reduction technology which integrates uranium oxide reduction in a molten LiCl-Li 2 O system and Li 2 O electrolysis is developed and a unique reaction system is also devised. Design data such as the treatment capacity, current density and mass transfer behavior obtained from the performance test of a 5 kgU/batch electrolytic reduction system pave the way for the third phase of the hot cell demonstration of the advanced spent fuel management technology

  6. Development of the Connecticut Airway Risk Evaluation (CARE) system to improve handoff communication in pediatric patients with tracheotomy.

    Science.gov (United States)

    Lawrason Hughes, Amy; Murray, Nicole; Valdez, Tulio A; Kelly, Raeanne; Kavanagh, Katherine

    2014-01-01

    interpret. As medical providers and national organizations place more focus on improvements in interprovider communication, the creation of an airway handoff tool is integral to improving patient safety and airway management strategies following tracheotomy complications.

  7. Advanced information technology for training and emergency management

    International Nuclear Information System (INIS)

    Wahlstroem, B.

    1989-01-01

    Modern information technology provides many possibilities for improving both the safety and the availability of nuclear installations. A Nordic research programme was started in 1977, in which several organizations in Denmark, Finland, Norway and Sweden has been participating. The work has on a general level been addressing control rooms, human reliability and information technology for nuclear power plants. The research has had impact on the development of the control room solutions and the training simulators in Finland and also in the other Nordic countries. The present phase of the Nordic cooperation is investigating the use of advanced information technology in emergency management. The paper gives a brief introduction to the use of advance information technology for training and emergency management, which is based on the experience from the Nordic projects and other similar application projects in Finland. The paper includes also references to results from several of the projects. (author)

  8. Laypersons can successfully place supraglottic airways with 3 minutes of training. A comparison of four different devices in the manikin

    Directory of Open Access Journals (Sweden)

    Schälte Gereon

    2011-10-01

    Full Text Available Abstract Introduction Supraglottic airway devices have frequently been shown to facilitate airway management and are implemented in the ILCOR resuscitation algorithm. Limited data exists concerning laypersons without any medical or paramedical background. We hypothesized that even laymen would be able to operate supraglottic airway devices after a brief training session. Methods Four different supraglottic airway devices: Laryngeal Mask Classic (LMA, Laryngeal Tube (LT, Intubating Laryngeal Mask (FT and CobraPLA (Cobra were tested in 141 volunteers recruited in a technical university cafeteria and in a shopping mall. All volunteers received a brief standardized training session. Primary endpoint was the time required to definitive insertion. In a short questionnaire applicants were asked to assess the devices and to answer some general questions about BLS. Results The longest time to insertion was observed for Cobra (31.9 ± 27.9 s, range: 9-120, p 0.05, the LT (1.36 ± 0.61, p Conclusion Laypersons are able to operate supraglottic airway devices in manikin with minimal instruction. Ventilation was achieved with all devices tested after a reasonable time and with a high success rate of > 95%. The use of supraglottic airway devices in first aid and BLS algorithms should be considered.

  9. Magnetic resonance imaging of the pediatric airway

    International Nuclear Information System (INIS)

    Auringer, S.T.; Bisset, G.S. III; Myer, C.M.

    1991-01-01

    Evaluation of the pediatric airway is often complex and may require multiple imaging techniques and invasive procedures. We performed magnetic resonance (MR) imaging of the airway in 34 children with clinical evidence of chronic airway obstruction and compared MR findings with those obtained by surgery and/or endoscopy. MR diagnoses included vascular compression in 15 patients, primary tracheomalacic states in 12 patients, and mediastinal masses in 4 patients. Findings were normal for 3 patients. The MR findings were in agreement with the endoscopic findings in 25 to 28 cases and in agreement with the surgical findings in 21 to 21 cases. (orig./GDG)

  10. Lipids in airway secretions

    International Nuclear Information System (INIS)

    Bhaskar, K.R.; DeFeudis O'Sullivan, D.; Opaskar-Hincman, H.; Reid, L.M.

    1987-01-01

    Lipids form a significant portion of airway mucus yet they have not received the same attention that epithelial glycoproteins have. We have analysed, by thin layer chromatography, lipids present in airway mucus under 'normal' and hypersecretory (pathological) conditions.The 'normals' included (1) bronchial lavage obtained from healthy human volunteers and from dogs and (2) secretions produced ''in vitro'' by human (bronchial) and canine (tracheal) explants. Hypersecretory mucus samples included (1) lavage from dogs made bronchitic by exposure to SO 2 , (2) bronchial aspirates from acute and chronic tracheostomy patients, (3) sputum from patients with cystic fibrosis and chronic bronchitis and (4) postmortem secretions from patients who died from sudden infant death syndrome (SIDS) or from status asthmaticus. Cholesterol was found to be the predominant lipid in 'normal' mucus with lesser amounts of phospholipids. No glycolipids were detected. In the hypersecretory mucus, in addition to neutral and phospholipids, glycolipids were present in appreciable amounts, often the predominant species, suggesting that these may be useful as markers of disease. Radioactive precursors 14 C acetate and 14 C palmitate were incorporated into lipids secreted ''in vitro'' by canine tracheal explants indicating that they are synthesised by the airway. (author)

  11. Measurement of lung airways in three dimensions using hyperpolarized helium-3 MRI

    International Nuclear Information System (INIS)

    Peterson, Eric T; Fain, Sean B; Dai Jionghan; Holmes, James H

    2011-01-01

    Large airway measurement is clinically important in cases of airway disease and trauma. The gold standard is computed tomography (CT), which allows for airway measurement. However, the ionizing radiation dose associated with CT is a major limitation in longitudinal studies and trauma. To avoid ionizing radiation from CT, we present a method for measuring the large airway diameter in humans using hyperpolarized helium-3 (HPHe) MRI in conjunction with a dynamic 3D radial acquisition. An algorithm is introduced which utilizes the significant airway contrast for semi-automated segmentation and skeletonization which is used to derive the airway lumen diameter. The HPHe MRI method was validated with quantitative CT in an excised and desiccated porcine lung (linear regression R 2 = 0.974 and slope = 0.966 over 32 airway segments). The airway lumen diameters were then compared in 24 human subjects (22 asthmatics and 2 normals; linear regression R 2 value of 0.799 and slope = 0.768 over 309 airway segments). The feasibility for airway path analysis to areas of ventilation defect is also demonstrated.

  12. Optical coherence tomography of the newborn airway.

    Science.gov (United States)

    Ridgway, James M; Su, Jianping; Wright, Ryan; Guo, Shuguang; Kim, David C; Barretto, Roberto; Ahuja, Gurpreet; Sepehr, Ali; Perez, Jorge; Sills, Jack H; Chen, Zhongping; Wong, Brian J F

    2008-05-01

    Acquired subglottic stenosis in a newborn is often associated with prolonged endotracheal intubation. This condition is generally diagnosed during operative endoscopy after airway injury has occurred. Unfortunately, endoscopy is unable to characterize the submucosal changes observed in such airway injuries. Other modalities, such as magnetic resonance imaging, computed tomography, and ultrasound, do not possess the necessary level of resolution to differentiate scar, neocartilage, and edema. Optical coherence tomography (OCT) is an imaging modality that produces high-resolution, cross-sectional images of living tissue (8 to 20 microm). We examined the ability of this noninvasive technique to characterize the newborn airway in a prospective clinical trial. Twelve newborn patients who required ventilatory support underwent OCT airway imaging. Comparative analysis of intubated and non-intubated states was performed. Imaging of the supraglottis, glottis, subglottis, and trachea was performed in 12 patients, revealing unique tissue characteristics as related to turbidity, signal backscattering, and architecture. Multiple structures were identified, including the vocal folds, cricoid cartilage, tracheal rings, ducts, glands, and vessels. Optical coherence tomography clearly identifies in vivo tissue layers and regional architecture while offering detailed information concerning tissue microstructures. The diagnostic potential of this technology makes OCT a promising modality in the study and surveillance of the neonatal airway.

  13. Recent advances in managing/understanding meningioma [version 1; referees: 2 approved

    Directory of Open Access Journals (Sweden)

    Nawal Shaikh

    2018-04-01

    Full Text Available Meningiomas are the most common adult primary intracranial tumor. Despite their higher incidence, there have not—until recently—been as many advances in understanding and managing meningiomas. Thus far, two broad classes of meningiomas have emerged on the basis of their mutational profile: those driven by neurofibromatosis 2 (NF2 inactivation and those with non-NF2 driver gene alterations, such as mammalian target of rapamycin and Hedgehog, Wingless/b-catenin, Notch, transforming growth factor-b receptor, mitogen-activated protein kinase, and phospholipase C pathway alterations. In addition to improvements in molecular diagnostics, advances in imaging are being studied to better predict tumor behavior, stratify risk, and potentially monitor for disease response. Management consists primarily of surgery and radiation therapy and there has been limited success from medical therapies, although novel targeted agents are now in clinical trials. Advances in imaging and understanding of the genetic makeup of meningiomas demonstrate the huge potential in revolutionizing the classification, diagnosis, management, and prognosis of meningiomas..

  14. Managing complex, high risk projects a guide to basic and advanced project management

    CERN Document Server

    Marle, Franck

    2016-01-01

    Maximizing reader insights into project management and handling complexity-driven risks, this book explores propagation effects, non-linear consequences, loops, and the emergence of positive properties that may occur over the course of a project. This book presents an introduction to project management and analysis of traditional project management approaches and their limits regarding complexity. It also includes overviews of recent research works about project complexity modelling and management as well as project complexity-driven issues. Moreover, the authors propose their own new approaches, new methodologies and new tools which may be used by project managers and/or researchers and/or students in the management of their projects. These new elements include project complexity definitions and frameworks, multi-criteria approaches for project complexity measurement, advanced methodologies for project management (propagation studies to anticipate potential behaviour of the project, and clustering approaches...

  15. The Effect of Advanced Management Accounting Practices on the Competitive Strategies and Performance

    OpenAIRE

    Rahmi Yücel; Kayhan Ahmetoğulları

    2015-01-01

    This study is based on a sample of 300 managers from the production industry of West Marmara Region. The goal of this study is to examine the interaction among advanced management accounting practices, competitive strategies and company performance. As a result of study, it is found that advanced accounting management practices have a positive effect on the company performance and competitive strategies. In addition, competitive strategies have an effect on the company performance positively....

  16. Clinical review: surgical management of locally advanced and recurrent colorectal cancer.

    LENUS (Irish Health Repository)

    Courtney, D

    2014-01-01

    Recurrent and locally advanced colorectal cancers frequently require en bloc resection of involved organs to achieve negative margins. The aim of this review is to evaluate the most current literature related to the surgical management of locally advanced and recurrent colorectal cancer.

  17. Viruses in cystic fibrosis patients' airways.

    Science.gov (United States)

    Billard, Lisa; Le Berre, Rozenn; Pilorgé, Léa; Payan, Christopher; Héry-Arnaud, Geneviève; Vallet, Sophie

    2017-11-01

    Although bacteria have historically been considered to play a major role in cystic fibrosis (CF) airway damage, a strong impact of respiratory viral infections (RVI) is also now recognized. Emerging evidence confirms that respiratory viruses are associated with deterioration of pulmonary function and exacerbation and facilitation of bacterial colonization in CF patients. The aim of this review is to provide an overview of the current knowledge on respiratory viruses in CF airways, to discuss the resulting inflammation and RVI response, to determine how to detect the viruses, and to assess their clinical consequences, prevalence, and interactions with bacteria. The most predominant are Rhinoviruses (RVs), significantly associated with CF exacerbation. Molecular techniques, and especially multiplex PCR, help to diagnose viral infections, and the coming rise of metagenomics will extend knowledge of viral populations in the complex ecosystem of CF airways. Prophylaxis and vaccination are currently available only for Respiratory syncytial and Influenza virus (IV), but antiviral molecules are being tested to improve CF patients' care. All the points raised in this review highlight the importance of taking account of RVIs and their potential impact on the CF airway ecosystem.

  18. The development of a novel steerable bougie to assist in airway management

    Directory of Open Access Journals (Sweden)

    Francesco Luke Siena

    2016-06-01

    Full Text Available Background This paper describes the development of a new airway device that will improve the speed and safety of endotracheal intubation in anaesthesia and critical care. Case of need, design specification and fabrication of the steerable bougie mechanism is discussed. Aims Identify the need for a novel steerable bougie whilst considering technology readiness levels associated with medical device design. Analyse and produce suitable mechanisms utilising smart materials to increase device functionality aiding successful patient intubation procedures. Methods This work describes the total design activity that contributes to the successful development of medical devices, from case of need, to smart material actuation mechanisms. Research focuses on identifying a suitable control mechanism to allow a steerable tip to be integrated into a bougie with a control device attached to the laryngoscope. Results Data collected from a user group survey supported the development of a novel bougie, with better shape retention, variable rigidity within the tip, and an integrated steerable function. Analysis of several mechanisms, artificial muscles, and smart materials identified a cost-effective steerable mechanism that can be incorporated into a bougie. Conclusion Users have defined a need for an improved bougie. Controlling smart materials and mechanisms, within the predefined dimensions, identified strengths and weaknesses associated with steerable functions. The performance of the selected mechanism for incorporation requires a high level of control to accurately steer a device within the human airway.

  19. Advanced chemistry management system to optimize BWR chemistry control

    International Nuclear Information System (INIS)

    Maeda, K.; Nagasawa, K.

    2002-01-01

    BWR plant chemistry control has close relationships among nuclear safety, component reliability, radiation field management and fuel integrity. Advanced technology is required to improve chemistry control [1,3,6,7,10,11]. Toshiba has developed TACMAN (Toshiba Advanced Chemistry Management system) to support BWR chemistry control. The TACMAN has been developed as response to utilities' years of requirements to keep plant operation safety, reliability and cost benefit. The advanced technology built into the TACMAN allows utilities to make efficient chemistry control and to keep cost benefit. TACMAN is currently being used in response to the needs for tools those plant chemists and engineers could use to optimize and identify plant chemistry conditions continuously. If an incipient condition or anomaly is detected at early stage, root causes evaluation and immediate countermeasures can be provided. Especially, the expert system brings numerous and competitive advantages not only to improve plant chemistry reliability but also to standardize and systematize know-how, empirical knowledge and technologies in BWR chemistry This paper shows detail functions of TACMAN and practical results to evaluate actual plant. (authors)

  20. Advances in the Traditional Chinese Medicine-Based Management of Viral Myocarditis.

    Science.gov (United States)

    Cao, Yong; Xu, Xia; Zhang, Peiying

    2015-09-01

    Viral myocarditis (VMC) is a common clinical condition; however, no specific treatment has been available from the perspective of modern western medicine, and typically only symptomatic treatment is provided in clinical settings. The traditional Chinese medicine (TCM) has shown certain advantages in treating VMC. Last few years have witnessed certain advances in the TCM-based research on the etiology and pathogenesis of VMC and its clinical management. This article reviews the clinical advances made in the TCM-based management of VMC in the last 5 years.

  1. Manual airway labeling has limited reproducibility

    DEFF Research Database (Denmark)

    Petersen, Jens; Feragen, Aasa; Thomsen, Laura Hohwü

    Purpose: Quantitative airway assessment is often performed in specific branches to enable comparison of measurements between patients and over time. Little is known on the accuracy in locating these branches. We determined inter- and intra-observer agreement of manual labeling of segmental bronch...... disagreement in expert labeling, possibly reflecting large anatomical heterogeneity and changes with inspiration. Consistent airway measurement cannot be guaranteed based on manual localization....

  2. Development and Analysis of Patient-Based Complete Conducting Airways Models.

    Directory of Open Access Journals (Sweden)

    Rafel Bordas

    Full Text Available The analysis of high-resolution computed tomography (CT images of the lung is dependent on inter-subject differences in airway geometry. The application of computational models in understanding the significance of these differences has previously been shown to be a useful tool in biomedical research. Studies using image-based geometries alone are limited to the analysis of the central airways, down to generation 6-10, as other airways are not visible on high-resolution CT. However, airways distal to this, often termed the small airways, are known to play a crucial role in common airway diseases such as asthma and chronic obstructive pulmonary disease (COPD. Other studies have incorporated an algorithmic approach to extrapolate CT segmented airways in order to obtain a complete conducting airway tree down to the level of the acinus. These models have typically been used for mechanistic studies, but also have the potential to be used in a patient-specific setting. In the current study, an image analysis and modelling pipeline was developed and applied to a number of healthy (n = 11 and asthmatic (n = 24 CT patient scans to produce complete patient-based airway models to the acinar level (mean terminal generation 15.8 ± 0.47. The resulting models are analysed in terms of morphometric properties and seen to be consistent with previous work. A number of global clinical lung function measures are compared to resistance predictions in the models to assess their suitability for use in a patient-specific setting. We show a significant difference (p < 0.01 in airways resistance at all tested flow rates in complete airway trees built using CT data from severe asthmatics (GINA 3-5 versus healthy subjects. Further, model predictions of airways resistance at all flow rates are shown to correlate with patient forced expiratory volume in one second (FEV1 (Spearman ρ = -0.65, p < 0.001 and, at low flow rates (0.00017 L/s, FEV1 over forced vital capacity (FEV1

  3. challenges in management of warfarin anti-coagulation in advanced

    African Journals Online (AJOL)

    2013-07-01

    Jul 1, 2013 ... ADVANCED HIV/AIDS PATIENTS WITH VENOUS THROMBOTIC EVENTS – A. CASE SERIES ... Objective: To describe clinical presentations and challenges in the management of. VTE in ..... Performance outcomes of a ...

  4. Tree crops: Advances in insects and disease management

    Science.gov (United States)

    Advances in next-generation sequencing have enabled genome sequencing to be fast and affordable. Thus today researchers and industries can address new methods in pest and pathogen management. Biological control of insect pests that occur in large areas, such as forests and farming systems of fruit t...

  5. Management of patients with advanced prostate cancer: recommendations of the St Gallen Advanced Prostate Cancer Consensus Conference (APCCC) 2015

    NARCIS (Netherlands)

    Gillessen, S.; Omlin, A.; Attard, G.; Bono, J.S. de; Efstathiou, E.; Fizazi, K.; Halabi, S.; Nelson, P.S.; Sartor, O.; Smith, M.R.; Soule, H.R.; Akaza, H.; Beer, T.M.; Beltran, H.; Chinnaiyan, A.M.; Daugaard, G.; Davis, I.D.; Santis, M. de; Drake, C.G.; Eeles, R.A.; Fanti, S.; Gleave, M.E.; Heidenreich, A.; Hussain, M.; James, N.D.; Lecouvet, F.E.; Logothetis, C.J.; Mastris, K.; Nilsson, S.; Oh, W.K.; Olmos, D.; Padhani, A.R.; Parker, C.; Rubin, M.A.; Schalken, J.A.; Scher, H.I.; Sella, A.; Shore, N.D.; Small, E.J.; Sternberg, C.N.; Suzuki, H; Sweeney, C.J.; Tannock, I.F.; Tombal, B.

    2015-01-01

    The first St Gallen Advanced Prostate Cancer Consensus Conference (APCCC) Expert Panel identified and reviewed the available evidence for the ten most important areas of controversy in advanced prostate cancer (APC) management. The successful registration of several drugs for castration-resistant

  6. A randomized non-crossover study comparing the ProSeal and Classic laryngeal mask airway in anaesthetized children.

    Science.gov (United States)

    Lopez-Gil, M; Brimacombe, J; Garcia, G

    2005-12-01

    We tested the hypothesis that ease of insertion, oropharyngeal leak pressure, fibreoptic position, gastric insufflation, and the frequency of mucosal trauma differ between the ProSeal laryngeal mask airway (PLMA) and the classic laryngeal mask airway (cLMA) in anaesthetized children. For the PLMA, we also assessed the ease of gastric tube placement via the PLMA drain tube and measure residual gastric volume. 240 consecutive ASA I-III children aged 1-16 yr were randomized for airway management with the ProSeal or cLMA. The time taken to provide an effective airway, the number of insertion attempts, fibreoptic position of the airway tube and frequency of mucosal trauma were similar, but oropharyngeal leak pressure was higher (33 vs 26 cm H(2)O, Ptube insertion was successful at the first attempt in 106 of 120, and at the second attempt in 14 of 120. The mean (sd; range) value for residual gastric volume was 2.2 (5.9; 0-30) ml. There were no differences in performance among sizes for the PLMA and the cLMA. We conclude that ease of insertion, fibreoptic position, and frequency of mucosal trauma are similar for the PLMA and cLMA in children, but oropharyngeal leak pressure is higher and gastric insufflation less common for the PLMA. Gastric tube insertion has a high success rate, provided the PLMA is correctly positioned.

  7. Human airway xenograft models of epithelial cell regeneration

    Directory of Open Access Journals (Sweden)

    Puchelle Edith

    2000-10-01

    Full Text Available Abstract Regeneration and restoration of the airway epithelium after mechanical, viral or bacterial injury have a determinant role in the evolution of numerous respiratory diseases such as chronic bronchitis, asthma and cystic fibrosis. The study in vivo of epithelial regeneration in animal models has shown that airway epithelial cells are able to dedifferentiate, spread, migrate over the denuded basement membrane and progressively redifferentiate to restore a functional respiratory epithelium after several weeks. Recently, human tracheal xenografts have been developed in immunodeficient severe combined immunodeficiency (SCID and nude mice. In this review we recall that human airway cells implanted in such conditioned host grafts can regenerate a well-differentiated and functional human epithelium; we stress the interest in these humanized mice in assaying candidate progenitor and stem cells of the human airway mucosa.

  8. Modeling TH 2 responses and airway inflammation to understand fundamental mechanisms regulating the pathogenesis of asthma.

    Science.gov (United States)

    Foster, Paul S; Maltby, Steven; Rosenberg, Helene F; Tay, Hock L; Hogan, Simon P; Collison, Adam M; Yang, Ming; Kaiko, Gerard E; Hansbro, Philip M; Kumar, Rakesh K; Mattes, Joerg

    2017-07-01

    In this review, we highlight experiments conducted in our laboratories that have elucidated functional roles for CD4 + T-helper type-2 lymphocytes (T H 2 cells), their associated cytokines, and eosinophils in the regulation of hallmark features of allergic asthma. Notably, we consider the complexity of type-2 responses and studies that have explored integrated signaling among classical T H 2 cytokines (IL-4, IL-5, and IL-13), which together with CCL11 (eotaxin-1) regulate critical aspects of eosinophil recruitment, allergic inflammation, and airway hyper-responsiveness (AHR). Among our most important findings, we have provided evidence that the initiation of T H 2 responses is regulated by airway epithelial cell-derived factors, including TRAIL and MID1, which promote T H 2 cell development via STAT6-dependent pathways. Further, we highlight studies demonstrating that microRNAs are key regulators of allergic inflammation and potential targets for anti-inflammatory therapy. On the background of T H 2 inflammation, we have demonstrated that innate immune cells (notably, airway macrophages) play essential roles in the generation of steroid-resistant inflammation and AHR secondary to allergen- and pathogen-induced exacerbations. Our work clearly indicates that understanding the diversity and spatiotemporal role of the inflammatory response and its interactions with resident airway cells is critical to advancing knowledge on asthma pathogenesis and the development of new therapeutic approaches. © 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  9. The role of anaerobic bacteria in the cystic fibrosis airway.

    Science.gov (United States)

    Sherrard, Laura J; Bell, Scott C; Tunney, Michael M

    2016-11-01

    Anaerobic bacteria are not only normal commensals, but are also considered opportunistic pathogens and have been identified as persistent members of the lower airway community in people with cystic fibrosis of all ages and stages of disease. Currently, the role of anaerobic bacteria in cystic fibrosis lower airway disease is not well understood. Therefore, this review describes the recent studies relating to the potential pathophysiological role(s) of anaerobes within the cystic fibrosis lungs. The most frequently identified anaerobic bacteria in the lower airways are common to both cystic fibrosis and healthy lungs. Studies have shown that in cystic fibrosis, the relative abundance of anaerobes fluctuates in the lower airways with reduced lung function and increased inflammation associated with a decreased anaerobic load. However, anaerobes found within the lower airways also produce virulence factors, may cause a host inflammatory response and interact synergistically with recognized pathogens. Anaerobic bacteria are potentially members of the airway microbiota in health but could also contribute to the pathogenesis of lower airway disease in cystic fibrosis via both direct and indirect mechanisms. A personalized treatment strategy that maintains a normal microbial community may be possible in the future.

  10. Postoperative Airway Emergency following Accidental Flexometallic Tube Transection

    Directory of Open Access Journals (Sweden)

    Karim Habib MR

    2015-10-01

    Full Text Available Endotracheal intubation using flexometallic tubes are often required in anaesthesia practice for a variety of reasons. It is preferred in the head and neck region surgeries due to its relative resistance to kinking forces. At times, these patients postoperatively may need to be shifted to ICU or HDU without extubation for further stabilization/management and extubation after adequate recovery. We present an unusual accident where a new flexometallic endotracheal tube was permanently tapered, transected and migrated proximally due to patient’s bite on tube leading to airway emergency in post-operative recovery period.

  11. Silibinin attenuates allergic airway inflammation in mice

    International Nuclear Information System (INIS)

    Choi, Yun Ho; Jin, Guang Yu; Guo, Hui Shu; Piao, Hong Mei; Li, Liang chang; Li, Guang Zhao; Lin, Zhen Hua; Yan, Guang Hai

    2012-01-01

    Highlights: ► Silibinin diminishes ovalbumin-induced inflammatory reactions in the mouse lung. ► Silibinin reduces the levels of various cytokines into the lung of allergic mice. ► Silibinin prevents the development of airway hyperresponsiveness in allergic mice. ► Silibinin suppresses NF-κB transcriptional activity. -- Abstract: Allergic asthma is a chronic inflammatory disease regulated by coordination of T-helper2 (Th2) type cytokines and inflammatory signal molecules. Silibinin is one of the main flavonoids produced by milk thistle, which is reported to inhibit the inflammatory response by suppressing the nuclear factor-kappa B (NF-κB) pathway. Because NF-κB activation plays a pivotal role in the pathogenesis of allergic inflammation, we have investigated the effect of silibinin on a mouse ovalbumin (OVA)-induced asthma model. Airway hyperresponsiveness, cytokines levels, and eosinophilic infiltration were analyzed in bronchoalveolar lavage fluid and lung tissue. Pretreatment of silibinin significantly inhibited airway inflammatory cell recruitment and peribronchiolar inflammation and reduced the production of various cytokines in bronchoalveolar fluid. In addition, silibinin prevented the development of airway hyperresponsiveness and attenuated the OVA challenge-induced NF-κB activation. These findings indicate that silibinin protects against OVA-induced airway inflammation, at least in part via downregulation of NF-κB activity. Our data support the utility of silibinin as a potential medicine for the treatment of asthma.

  12. Safety and Efficacy of a Fully Covered Self-Expandable Metallic Stent in Benign Airway Stenosis.

    Science.gov (United States)

    Fortin, Marc; Lacasse, Yves; Elharrar, Xavier; Tazi-Mezalek, Rachid; Laroumagne, Sophie; Guinde, Julien; Astoul, Philippe; Dutau, Hervé

    2017-01-01

    The use of self-expandable metallic stents (SEMS) in benign airway disease was the object of a boxed warning from the United States Food and Drug Administration in 2005 due to the risk of stent-related complications and difficulties associated with their removal. Third-generation fully covered SEMS have been commercialized since this warning and theoretically should not present the same difficulties associated with removal as they cannot become embedded in the airway mucosa. We aimed to examine the safety and efficacy of a specific third-generation SEMS, the Silmet stent. We reviewed the records of all patients treated for benign airway stenosis with third-generation Silmet SEMS from January 2011 to December 2015 at the North Hospital of Marseilles, France. Forty SEMS were inserted in 30 patients over this period. Twenty (50.0%) stents were removed because of stent-related complications after a median of 77.0 ± 96.6 days (migration 32.5%, granulation tissue formation 7.5%, subjective intolerance 5.0%, mucus plugging 2.5%, laryngeal edema 2.5%). There were no cases of stent-related mortality. All complications were managed successfully endoscopically. Thirty-six stents (90.0%) were removed successfully after a median of 122.0 ± 113.2 days without any complications. The clinical success rate of stent treatment was 40.7%. Third-generation SEMS are a safe treatment option for complex benign airway stenosis, but complications requiring stent removal are frequent. Further studies are needed to compare the performance of third-generation SEMS and silicone stents in benign airway stenosis. © 2017 S. Karger AG, Basel.

  13. 28 RECENT ADVANCES IN THE MANAGEMENT OF CEREBRO ...

    African Journals Online (AJOL)

    drclement

    have been falling dramatically in recent decades in developed nations, ... 1 December, 2007. Recent Advances In The Management Of Cerebro-Vascular Accident. 29 unlikely to be related to the changing risk factor levels over time. Stroke Types. Stroke is caused .... CADASIL, which stands for cerebral autosomal dominant ...

  14. BALANCED SCORECARD AS AN ADVANCED MANAGEMENT CONCEPT WITHIN THE INTEGRATED QUALITY MANAGEMENT MODEL

    Directory of Open Access Journals (Sweden)

    Stevan Zivojinovic

    2008-03-01

    Full Text Available The significance of >Integratedquality management< (IQM model, originating form St.Gallen-model, is reflected in the need for synergic application of new and advanced concepts of management theory and practise. Balanced score card (BSC within IQM model becomes a catalyst of business success for a modern organization by focusing on organizational variables-business strategy, organization structure and corporate culture. BSC is the leading system of performance tracking and strategy implementation, consistent with other management concepts and methods for managing process improvement. Through BSC, IQM processes' activities correlate with organization business results. BSC management processes enable integration of all decision-making levels, from institutional via strategic to operative, in the process starting from planing, i.e. formulating and implementation of strategy, to feed back by performance measurement and control.

  15. Oral appliance therapy versus nasal continuous positive airway pressure in obstructive sleep apnea: a randomized, placebo-controlled trial on psychological distress

    NARCIS (Netherlands)

    Aarab, Ghizlane; Nikolopoulou, Maria; Ahlberg, Jari; Heymans, Martijn W.; Hamburger, Hans L.; de Lange, Jan; Lobbezoo, Frank

    2017-01-01

    The aim of this randomized placebo-controlled trail was to compare the effects of an objectively titrated mandibular advancement device (MAD) with those of nasal continuous positive airway pressure (nCPAP) and an intraoral placebo device on symptoms of psychological distress in OSA patients. In a

  16. Recent advances in the treatment and management of excessive daytime sleepiness.

    Science.gov (United States)

    Black, Jed; Duntley, Stephen P; Bogan, Richard K; O'Malley, Mary B

    2007-02-01

    Excessive daytime sleepiness (EDS) is a prevalent complaint among patients in psychiatric care. Patients with conditions of EDS have often been misdiagnosed with depression due to their complaints of lack of energy, poor concentration, memory disturbance, and a reduced interest in life. Impaired alertness associated with EDS can be detrimental to a person's quality of life by causing decreased work performance, self-consciousness, low self esteem, and social isolation. Excessive sleepiness is also associated with various health problems, comorbid medical and psychiatric conditions, and fatal accidents occurring after the driver has fallen asleep at the wheel. Contributing factors leading to EDS range from insufficient sleep hours to central nervous system-mediated debilitating hypersomnolence. Circadian rhythm disorders, sleep disorders such as obstructive sleep apnea and narcolepsy, and medications that cause sleepiness may also contribute to symptoms of EDS. Recognition of the symptoms of sleep deprivation is essential, as many such patients do not have a clear awareness of their own sleepiness. Treatment options, depending upon the condition, include light therapy or appropriate airway management techniques such as nasal continuous positive airway pressure (CPAP). Occasionally, wakefulness-promoting medications are necessary, particularly in patients with narcolepsy. In this expert roundtable supplement, Stephen P. Duntley, MD, reviews the definition and prevalence of EDS and discusses the contributing factors and consequences of daytime sleepiness. Next, Richard K. Bogan, MD, FCCP, gives an overview of the differential diagnosis of EDS and the assessment tools available for identifying sleepiness in symptomatic patients. Finally, Mary B. O'Malley, MD, PhD, reviews treatment of EDS, including counseling on sleep hygiene and duration of sleep, mechanical treatments, bright-light therapy, and wake-promoting medications.

  17. Impulse Oscillometry and Spirometry Small-Airway Parameters in Mild to Moderate Bronchiectasis.

    Science.gov (United States)

    Guan, Wei-Jie; Yuan, Jing-Jing; Gao, Yong-Hua; Li, Hui-Min; Zheng, Jin-Ping; Chen, Rong-Chang; Zhong, Nan-Shan

    2016-11-01

    Both impulse oscillometry and spirometry can reflect small-airway disorders. The objective of this work was to investigate the diagnostic value of impulse oscillometry and spirometry small-airway parameters and their correlation with radiology, disease severity, and sputum bacteriology in mild to moderate bronchiectasis (bronchiectasis severity index spirometry, and sputum culture were performed. Correlation between small-airway parameters and clinical indices was determined, adjusting for age, sex, body mass index, and smoking history. Sensitivity analyses were repeated when excluding subjects with bronchiectasis severity index ≥9 or HRCT score ≥13. Impulse oscillometry and spirometry small-airway parameters could discriminate mild to moderate bronchiectasis from healthy subjects and correlated significantly with HRCT score and the number of bronchiectatic lobes and the bronchiectasis severity index (all P Spirometry, but not impulse oscillometry, small-airway parameters differed statistically between subjects with isolated peripheral-airway bronchiectasis and those with peripheral plus central-airway bronchiectasis (all P spirometry small-airway parameters have similar diagnostic value in reflecting peripheral-airway disorders and correlate with the HRCT scores, the bronchiectasis severity index, and the number of bronchiectatic lobes in mild to moderate bronchiectasis. Assessment of small-airway parameters should be incorporated in future lung function investigations in bronchiectasis. Copyright © 2016 by Daedalus Enterprises.

  18. Advanced thermal management technologies for defense electronics

    Science.gov (United States)

    Bloschock, Kristen P.; Bar-Cohen, Avram

    2012-05-01

    Thermal management technology plays a key role in the continuing miniaturization, performance improvements, and higher reliability of electronic systems. For the past decade, and particularly, the past 4 years, the Defense Advanced Research Projects Agency (DARPA) has aggressively pursued the application of micro- and nano-technology to reduce or remove thermal constraints on the performance of defense electronic systems. The DARPA Thermal Management Technologies (TMT) portfolio is comprised of five technical thrust areas: Thermal Ground Plane (TGP), Microtechnologies for Air-Cooled Exchangers (MACE), NanoThermal Interfaces (NTI), Active Cooling Modules (ACM), and Near Junction Thermal Transport (NJTT). An overview of the TMT program will be presented with emphasis on the goals and status of these efforts relative to the current State-of-the-Art. The presentation will close with future challenges and opportunities in the thermal management of defense electronics.

  19. Advances in Technology and Management : Proceedings of the 2012 International Conference on Technology and Management

    CERN Document Server

    2012-01-01

    This book Advances in Technology and Management contains 116 full length papers presented at the International Conference on Technology and Management, held on June 12-13, 2012, Jeju-Island, Korea. The goal of ICTAM 2012 is to bring together researchers working in many different areas of technology and management to foster international collaborations and exchange of new ideas.   This volume can be divided into two sections on the basis of the classification of manuscripts considered. The first section deals with technology. The second section of this volume consists of management.

  20. Neuronal NOS localises to human airway cilia.

    Science.gov (United States)

    Jackson, Claire L; Lucas, Jane S; Walker, Woolf T; Owen, Holly; Premadeva, Irnthu; Lackie, Peter M

    2015-01-30

    Airway NO synthase (NOS) isoenzymes are responsible for rapid and localised nitric oxide (NO) production and are expressed in airway epithelium. We sought to determine the localisation of neuronal NOS (nNOS) in airway epithelium due to the paucity of evidence. Sections of healthy human bronchial tissue in glycol methacrylate resin and human nasal polyps in paraffin wax were immunohistochemically labelled and reproducibly demonstrated nNOS immunoreactivity, particularly at the proximal portion of cilia; this immunoreactivity was blocked by a specific nNOS peptide fragment. Healthy human epithelial cells differentiated at an air-liquid interface (ALI) confirmed the presence of all three NOS isoenzymes by immunofluorescence labelling. Only nNOS immunoreactivity was specific to the ciliary axonemeand co-localised with the cilia marker β-tubulin in the proximal part of the ciliary axoneme. We report a novel localisation of nNOS at the proximal portion of cilia in airway epithelium and conclude that its independent and local regulation of NO levels is crucial for normal cilia function. Copyright © 2014 Elsevier Inc. All rights reserved.

  1. The development of an advanced information management system

    International Nuclear Information System (INIS)

    Kim, Seung Hwan

    2005-01-01

    Performing a PSA requires a lot of data to analyze, to evaluate the risk, to trace the process of results and to verify the results. KAERI is developing a PSA information database system, AIMS (Advanced Information Management System for PSA). The objective of AIMS development is to integrate and computerize all the distributed information of a PSA into a system and to enhance the accessibility to PSA information for all PSA related activities. We designed the PSA information database system for the following purposes: integrated PSA information management software, sensitivity analysis, quality assurance, anchor to another reliability database. The AIMS consists of a PSA Information database, Information browsing (searching) modules, and PSA automatic quantification manager modules

  2. The development of an advanced information management system

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Seung Hwan [Korea Atomic Energy Research Institute, Taejon (Korea, Republic of)

    2005-07-01

    Performing a PSA requires a lot of data to analyze, to evaluate the risk, to trace the process of results and to verify the results. KAERI is developing a PSA information database system, AIMS (Advanced Information Management System for PSA). The objective of AIMS development is to integrate and computerize all the distributed information of a PSA into a system and to enhance the accessibility to PSA information for all PSA related activities. We designed the PSA information database system for the following purposes: integrated PSA information management software, sensitivity analysis, quality assurance, anchor to another reliability database. The AIMS consists of a PSA Information database, Information browsing (searching) modules, and PSA automatic quantification manager modules.

  3. Airways obstruction, coal mining, and disability.

    OpenAIRE

    Lapp, N L; Morgan, W K; Zaldivar, G

    1994-01-01

    It has recently been suggested that the inhalation of coal in the absence of complicated coal workers' pneumoconiosis (CWP) or smoking can lead to disabling airways obstruction. The cause of such obstruction has been variously attributed to emphysema or bronchitis. The frequency of significant airways obstruction in a group of United States coal miners seeking compensation for occupationally induced pulmonary impairment was therefore determined. In a sample of 611 "Black Lung" claimants there...

  4. A hierarchical scheme for geodesic anatomical labeling of airway trees

    DEFF Research Database (Denmark)

    Feragen, Aasa; Petersen, Jens; Owen, Megan

    2012-01-01

    We present a fast and robust supervised algorithm for label- ing anatomical airway trees, based on geodesic distances in a geometric tree-space. Possible branch label configurations for a given unlabeled air- way tree are evaluated based on the distances to a training set of labeled airway trees....... In tree-space, the airway tree topology and geometry change continuously, giving a natural way to automatically handle anatomical differences and noise. The algorithm is made efficient using a hierarchical approach, in which labels are assigned from the top down. We only use features of the airway...

  5. Radioactive waste management and advanced nuclear fuel cycle technologies

    International Nuclear Information System (INIS)

    2007-01-01

    In 2007 ENEA's Department of Nuclear Fusion and Fission, and Related Technologies acted according to national policy and the role assigned to ENEA FPN by Law 257/2003 regarding radioactive waste management and advanced nuclear fuel cycle technologies

  6. Care of the airways in a patient hospitalized at the ARO, JIP

    OpenAIRE

    Budaiová, Lucie

    2011-01-01

    Diplom thesis called "Caring for the airways of a patient hospitalized in DAR, ICU" cosists of two parts - a theoretical and empirical one. The theoretical part is focused on basic knowledge concerning airways. Also describes the anatomy and physiology of airways, caring of airways - ensuring a patient airways, monitoring of the respiratory system and respiratory physical therapy in adult patients hospitalized at DAR, ICU. Empirical part of thesis describes results of data obtained from the q...

  7. 20th International Symposium on Advancement of Construction Management and Real Estate

    CERN Document Server

    Zheng, Sheng; Luo, Jiaojiao; Wang, Wei; Mo, Zhibin; Shan, Liping

    2017-01-01

    These conference proceedings offer an outstanding resource for academics and professionals, sharing essential findings on the latest developments in real estate and construction management. The subject is “Advancement of Construction Management and Real Estate” in the context of new-type urbanization. The Chinese Research Institute of Construction Management (CRIOCM), working in close collaboration with Zhejiang University, organized CRIOCM2015, the 20th International Symposium. Written by academics and professionals from all over the world, these proceedings discuss the latest achievements, research outputs and advances between frontier disciplines in the field of construction management and real estate. They cover a wide range of topics, including new-type urbanization, land development and land use, urban development and management, the real estate market and housing policies. The discussions will provide an important reference source on the implementation of new-type urbanization in China and abroad.

  8. Small airways disease: time for a revisit?

    Directory of Open Access Journals (Sweden)

    Stockley JA

    2017-08-01

    Full Text Available James A Stockley,1 Brendan G Cooper,1 Robert A Stockley,2 Elizabeth Sapey3 1Department of Lung Function and Sleep, 2Department of Respiratory Medicine, University Hospital Birmingham, 3Institute of Inflammation and Ageing, Centre for Translational Inflammation Research, University of Birmingham, Edgbaston, Birmingham, UK Abstract: It is increasingly acknowledged that delays in the diagnosis of chronic inflammatory lung conditions have hampered our understanding of pathogenesis and thus our ability to design efficacious therapies. This is particularly true for COPD, where most patients are diagnosed with moderate-to-severe airflow obstruction and little is known about the inflammatory processes present in early disease. There is great interest in developing screening tests that can identify those most at risk of developing COPD before airflow obstruction has developed for the purpose of research and clinical care. Landmark pathology studies have suggested that damage to the small airways precedes the development of airflow obstruction and emphysema and, thus, presents an opportunity to identify those at risk of COPD. However, despite a number of physiological tests being available to assess small airways function, none have been adopted into routine care in COPD. The reasons that tests of small airways have not been utilized widely include variability in test results and a lack of validated reference ranges from which to compare results for some methodologies. Furthermore, population studies have not consistently demonstrated their ability to diagnose disease. However, the landscape may be changing. As the equipment that delivers tests of small airways become more widely available, reference ranges are emerging and newer methodologies specifically seek to address variability and difficulty in test performance. Moreover, there is evidence that while tests of small airways may not be helpful across the full range of established disease severity

  9. Upper airway segmentation and dimensions estimation from cone-beam CT image datasets

    Energy Technology Data Exchange (ETDEWEB)

    Shi, Hongjian; Scarfe, W.C. [Louisville Univ., KY (United States). School of Dentistry; Farman, A.G. [Louisville Univ., KY (United States). School of Dentistry; Louisville Univ., KY (United States). Div. of Radiology and Imaging Science

    2006-11-15

    Objective: To segment and measure the upper airway using cone-beam computed tomography (CBCT). This information may be useful as an imaging biomarker in the diagnostic assessment of patients with obstructive sleep apnea and in the planning of any necessary therapy. Methods: With Institutional Review Board Approval, anonymous CBCT datasets from subjects who had been imaged for a variety of conditions unrelated to the airway were evaluated. DICOM images were available. A segmentation algorithm was developed to separate the bounded upper airway and measurements were performed manually to determine the smallest cross-sectional area and the anteriorposterior distance of the retropalatal space (RP-SCA and RP-AP, respectively) and retroglossal space (RG-SCA and RG-AP, respectively). A segmentation algorithm was developed to separate the bounded upper airway and it was applied to determine RP-AP, RG-AP, the smallest transaxial-sectional area (TSCA) and largest sagittal view airway area (LCSA). A second algorithm was created to evaluate the airway volume within this bounded upper airway. Results: Measurements of the airway segmented automatically by the developed algorithm agreed with those obtained using manual segmentation. The corresponding volumes showed only very small differences considered clinically insignificant. Conclusion: Automatic segmentation of the airway imaged using CBCT is feasible and this method can be used to evaluate airway cross-section and volume comparable to measurements extracted using manual segmentation. (orig.)

  10. Adam8 Limits the Development of Allergic Airway Inflammation in Mice

    Science.gov (United States)

    Knolle, Martin D.; Nakajima, Takahiro; Hergrueter, Anja; Gupta, Kushagra; Polverino, Francesca; Craig, Vanessa J.; Fyfe, Susanne E.; Zahid, Muhammad; Permaul, Perdita; Cernadas, Manuela; Montano, Gilbert; Tesfaigzi, Yohannes; Sholl, Lynette; Kobzik, Lester; Israel, Elliot; Owen, Caroline A.

    2013-01-01

    To determine whether a disintegrin and a metalloproteinase-8 (Adam8) regulates allergic airway inflammation (AAI) and airway hyper-responsiveness (AHR), we compared AAI and AHR in wild type (WT) versus Adam8−/− mice in different genetic backgrounds sensitized and challenged with ovalbumin (OVA) or house dust mite protein extract (HDM). OVA- and HDM-treated Adam8−/− mice had higher lung leukocyte counts, more airway mucus metaplasia, greater lung levels of some TH2 cytokines, and higher methacholine-induced increases in central airway resistance than allergen-treated WT mice. Studies of OVA-treated Adam8 bone marrow chimeric mice confirmed that leukocyte-derived Adam8 predominantly mediated Adam8’s anti-inflammatory activities in murine airways. Airway eosinophils and macrophages both expressed Adam8 in WT mice with AAI. Adam8 limited AAI and AHR in mice by reducing leukocyte survival because: 1) Adam8−/− mice with AAI had fewer apoptotic eosinophils and macrophages in their airways than WT mice with AAI; and 2) Adam8−/− macrophages and eosinophils had reduced rates of apoptosis compared with WT leukocytes when the intrinsic (but not the extrinsic) apoptosis pathway was triggered in the cells in vitro. ADAM8 was robustly expressed by airway granulocytes in lung sections from human asthma patients but, surprisingly, airway macrophages had less ADAM8 staining than airway eosinophils. Thus, ADAM8 has anti-inflammatory activities during AAI in mice by activating the intrinsic apoptosis pathway in myeloid leukocytes. Strategies that increase ADAM8 levels in myeloid leukocytes may have therapeutic efficacy in asthma. PMID:23670189

  11. Advances in Financial Risk Management and Economic Policy Uncertainty: An Overview

    NARCIS (Netherlands)

    S.M. Hammoudeh (Shawkat); M.J. McAleer (Michael)

    2014-01-01

    markdownabstract__Abstract__ Financial risk management is difficult at the best of times, but especially so in the presence of economic uncertainty and financial crises. The purpose of this special issue on “Advances in Financial Risk Management and Economic Policy Uncertainty” is to highlight

  12. Silibinin attenuates allergic airway inflammation in mice

    Energy Technology Data Exchange (ETDEWEB)

    Choi, Yun Ho [Department of Anatomy, Medical School, Institute for Medical Sciences, Chonbuk National University, Jeonju, Jeonbuk 561-756 (Korea, Republic of); Jin, Guang Yu [Department of Radiology, Yanbian University Hospital, YanJi 133002 (China); Guo, Hui Shu [Centralab, The First Affiliated Hospital of Dalian Medical University, Dalian 116011 (China); Piao, Hong Mei [Department of Respiratory Medicine, Yanbian University Hospital, YanJi 133000 (China); Li, Liang chang; Li, Guang Zhao [Department of Anatomy and Histology and Embryology, Yanbian University School of Basic Medical Sciences, 977 Gongyuan Road, YanJi 133002, Jilin (China); Lin, Zhen Hua [Department of Pathology, Yanbian University School of Basic Medical Sciences, YanJi 133000 (China); Yan, Guang Hai, E-mail: ghyan@ybu.edu.cn [Department of Anatomy and Histology and Embryology, Yanbian University School of Basic Medical Sciences, 977 Gongyuan Road, YanJi 133002, Jilin (China)

    2012-10-26

    Highlights: Black-Right-Pointing-Pointer Silibinin diminishes ovalbumin-induced inflammatory reactions in the mouse lung. Black-Right-Pointing-Pointer Silibinin reduces the levels of various cytokines into the lung of allergic mice. Black-Right-Pointing-Pointer Silibinin prevents the development of airway hyperresponsiveness in allergic mice. Black-Right-Pointing-Pointer Silibinin suppresses NF-{kappa}B transcriptional activity. -- Abstract: Allergic asthma is a chronic inflammatory disease regulated by coordination of T-helper2 (Th2) type cytokines and inflammatory signal molecules. Silibinin is one of the main flavonoids produced by milk thistle, which is reported to inhibit the inflammatory response by suppressing the nuclear factor-kappa B (NF-{kappa}B) pathway. Because NF-{kappa}B activation plays a pivotal role in the pathogenesis of allergic inflammation, we have investigated the effect of silibinin on a mouse ovalbumin (OVA)-induced asthma model. Airway hyperresponsiveness, cytokines levels, and eosinophilic infiltration were analyzed in bronchoalveolar lavage fluid and lung tissue. Pretreatment of silibinin significantly inhibited airway inflammatory cell recruitment and peribronchiolar inflammation and reduced the production of various cytokines in bronchoalveolar fluid. In addition, silibinin prevented the development of airway hyperresponsiveness and attenuated the OVA challenge-induced NF-{kappa}B activation. These findings indicate that silibinin protects against OVA-induced airway inflammation, at least in part via downregulation of NF-{kappa}B activity. Our data support the utility of silibinin as a potential medicine for the treatment of asthma.

  13. Regional aerosol deposition in human upper airways

    Energy Technology Data Exchange (ETDEWEB)

    Swift, D.L.

    1992-11-01

    Laboratory experimental studies were carried out to investigate the factors influencing the deposition of aerosols ranging in size from 1 nm to 10 [mu]m in the human nasal, oral, pharyngeal and laryngeal airways. These experimental studies were performed in replicate upper airway physical models and in human volunteer subjects. New replicate models of the oral passage of an infant, the oral passage of an adult at two openings and the combined nasal and oral airways of an adult were constructed during the period, adding to the existing models of adult, child and infant nasal and oral airways models. Deposition studies in the adult oral and adult nasal models were performed under simulated cyclic flow conditions with 1 nm particles to compare with previously measured constant flow studies. Similar studies with inertial particles (1--10 [mu]m diameter) were performed with the adult nasal model; in both instances, results with cyclic flow were similar to constant flow results using a simple average flow rate based on inspiratory volume and time of inspiration. Human subject studies were performed with particle sizes 5--20 nm for nasal inspiration; preliminary analysis shows good agreement with model studies at several representative flow rates. Nasal inspiratory inertial deposition of 1--4 [mu]m diameter particles was measured in several adults as a function of airway dimensions; dimensional changes of the valve area by decongestion did not produce concomitant deposition changes.

  14. Estimates of cost-effectiveness of prehospital continuous positive airway pressure in the management of acute pulmonary edema.

    Science.gov (United States)

    Hubble, Michael W; Richards, Michael E; Wilfong, Denise A

    2008-01-01

    To estimate the cost-effectiveness of continuous positive airway pressure (CPAP) in managing prehospital acute pulmonary edema in an urban EMS system. Using estimates from published reports on prehospital and emergency department CPAP, a cost-effectiveness model of implementing CPAP in a typical urban EMS system was derived from the societal perspective as well as the perspective of the implementing EMS system. To assess the robustness of the model, a series of univariate and multivariate sensitivity analyses was performed on the input variables. The cost of consumables, equipment, and training yielded a total cost of $89 per CPAP application. The theoretical system would be expected to use CPAP 4 times per 1000 EMS patients and is expected to save 0.75 additional lives per 1000 EMS patients at a cost of $490 per life saved. CPAP is also expected to result in approximately one less intubation per 6 CPAP applications and reduce hospitalization costs by $4075 per year for each CPAP application. Through sensitivity analyses the model was verified to be robust across a wide range of input variable assumptions. Previous studies have demonstrated the clinical effectiveness of CPAP in the management of acute pulmonary edema. Through a theoretical analysis which modeled the costs and clinical benefits of implementing CPAP in an urban EMS system, prehospital CPAP appears to be a cost-effective treatment.

  15. Specific airway resistance in healthy young Vietnamese and Caucasian adults.

    Science.gov (United States)

    Le Tuan, Thanh; Nguyen, Ngoc Minh; Demoulin, Bruno; Bonabel, Claude; Nguyen-Thi, Phi Linh; Ioan, Iulia; Schweitzer, Cyril; Nguyen, H T T; Varechova, Silvia; Marchal, Francois

    2015-06-01

    In healthy Vietnamese children the respiratory resistance has been suggested to be similar at 110 cm height but larger at 130 cm when compared with data in Caucasians from the literature, suggesting smaller airways in older Vietnamese children (Vu et al., 2008). The hypothesis tested here is whether the difference in airway resistance remains consistent throughout growth, and if it is larger in adult Vietnamese than in Caucasians. Airway resistance and Functional Residual Capacity were measured in healthy young Caucasian and Vietnamese adults in their respective native country using identical equipment and protocols. Ninety five subjects in Vietnam (60 males) and 101 in France (41 males) were recruited. Airway resistance was significantly larger in Vietnamese than in Caucasians and in females than in males, consistent with difference in body dimensions. Specific airway resistance however was not different by ethnicity or gender. The findings do not support the hypothesis that airway size at adult age - once normalized for lung volume - differs between Vietnamese and Caucasians. Copyright © 2015 Elsevier B.V. All rights reserved.

  16. Mechanics of airflow in the human nasal airways.

    Science.gov (United States)

    Doorly, D J; Taylor, D J; Schroter, R C

    2008-11-30

    The mechanics of airflow in the human nasal airways is reviewed, drawing on the findings of experimental and computational model studies. Modelling inevitably requires simplifications and assumptions, particularly given the complexity of the nasal airways. The processes entailed in modelling the nasal airways (from defining the model, to its production and, finally, validating the results) is critically examined, both for physical models and for computational simulations. Uncertainty still surrounds the appropriateness of the various assumptions made in modelling, particularly with regard to the nature of flow. New results are presented in which high-speed particle image velocimetry (PIV) and direct numerical simulation are applied to investigate the development of flow instability in the nasal cavity. These illustrate some of the improved capabilities afforded by technological developments for future model studies. The need for further improvements in characterising airway geometry and flow together with promising new methods are briefly discussed.

  17. Acesso rápido à via aérea Rapid airway access

    Directory of Open Access Journals (Sweden)

    Sérgio L. Amantéa

    2003-11-01

    Full Text Available OBJETIVO: O artigo visa rever os passos da obtenção de uma via aérea segura no atendimento da criança criticamente enferma. FONTES DOS DADOS: Revisão de artigos a partir da busca na base de dados Medline até abril de 2003, utilizando os unitermos intubação, crianças e sedação. SÍNTESE DOS DADOS: O comprometimento da via aérea é incomum, porém quando ocorre, depende de profissionais treinados para a rápida obtenção da via aérea, de maneira segura, precoce e sem causar prejuízos para tais pacientes. O método preconizado para tal abordagem é a seqüência rápida de intubação que além de preparação, utiliza sedação e bloqueador neuromuscular. Observamos que não é possível a aplicação de um protocolo único de intubação, pois depende da indicação e condições do paciente. Definimos doses das medicações mais utilizadas em nosso meio, pois acreditamos que pouco se conhece do real efeito de drogas sedativas e analgésicas. Na maioria das situações, a associação de um analgésico opióide (fentanil na dose de 5 a 10 µg/kg e um sedativo (midazolam 0,5 mg/kg e um bloqueador neuromuscular são suficientes para a intubação traqueal. CONCLUSÕES: Treinamento, conhecimento, habilidade na obtenção da via aérea são fundamentais para o intensivista pediátrico e são vitais para o adequado atendimento de crianças gravemente enfermas. Apresentamos um texto objetivo e dinâmico, visando a oferecer subsídios para a geração de protocolos a serem implementados de acordo com facilidades e dificuldades de cada serviço.OBJECTIVE: To review the steps involved in safe airway management in critically ill children. SOURCES OF DATA: Review of articles selected through Medline until April 2003 using the following key words: intubation, children, sedation. SUMMARY OF THE FINDINGS: Airway compromise is rare, but whenever it occurs, the situation depends on professionals trained to carry out safe, early, and rapid airway

  18. Percutaneous Transtracheal Jet Ventilation with Various Upper Airway Obstruction

    Directory of Open Access Journals (Sweden)

    Tomoki Doi

    2015-01-01

    Full Text Available A “cannot-ventilate, cannot-intubate” situation is critical. In difficult airway management, transtracheal jet ventilation (TTJV has been recommended as an invasive procedure, but specialized equipment is required. However, the influence of upper airway resistance (UAR during TTJV has not been clarified. The aim of this study was to compare TTJV using a manual jet ventilator (MJV and the oxygen flush device of the anesthetic machine (AM. We made a model lung offering variable UAR by adjustment of tracheal tube size that can ventilate through a 14-G cannula. We measured side flow due to the Venturi effect during TTJV, inspired tidal volume (TVi, and expiratory time under various inspiratory times. No Venturi effect was detected during TTJV with either device. With the MJV, TVi tended to increase in proportion to UAR. With AM, significant variations in TVi was not detected with changes in any UAR. In conclusion, UAR influenced forward flow of TTJV in the model lung. The influence of choked flow from the Venturi effect was minimal under all UAR settings with the MJV, but the AM could not deliver sufficient flow.

  19. Sealing of Airway Fistulas for Metallic Covered Z-type Stents

    Directory of Open Access Journals (Sweden)

    Hongwu WANG

    2011-08-01

    Full Text Available Background and objective Treating airway fistulas, including esophagorespiratory fistulas (ERFs, bronchopleural fistulas (BPFs, and tracheomediastinal fistulas (TMFs, is difficult. The aim of this study is to evaluate the safety and clinical efficacy of metallic covered Z-type stents (CZTS for the treatment of airway fistulas through bronchoscopy or fluroscopy. Methods Thirty-eight patients with fistulas between the esophagus, mediastina, and airways (32 ERFs, 5 BPFs, and 1 TMF were retrospectively reviewed after treatment with covered metallic esophageal and airway stents. The fistulas were caused by esophageal (n=26, bronchogenic (n=11, and thyroid (n=1 carcinomas. Results Forty-six fistulas were found in 38 patients. The fistula size ranged from 0.5 cm to 7.0 cm. Forty airway covered metal stents (24 Y-type, 8 L-type, and 8 I-type and 24 esophageal metal stents were placed. Complete responses to the sealing effects of fistulas were noted in 4.3% of all the fistulas, 60.9% showed complete clinical responses, 23.9% showed partial responses, and 10.9% showed no response. An effectivity rate of 89.1% was observed, and the median survival duration of all patients was 5 months. Conclusion The use of CZTS appears to be safe and feasible for the palliative treatment of ERFs, BPFs, and TMFs. Airway stent placement is recommended for patients with ERF. In the event that airway stents fail, esophageal stents should be given. Airway bifurcation stents were observed to be especially suitable for the sealing of fistulas near the trachea carina.

  20. In vivo models of human airway epithelium repair and regeneration

    Directory of Open Access Journals (Sweden)

    C. Coraux

    2005-12-01

    Full Text Available Despite an efficient defence system, the airway surface epithelium, in permanent contact with the external milieu, is frequently injured by inhaled pollutants, microorganisms and viruses. The response of the airway surface epithelium to an acute injury includes a succession of cellular events varying from the loss of the surface epithelium integrity to partial shedding of the epithelium or even to complete denudation of the basement membrane. The epithelium has then to repair and regenerate to restore its functions. The in vivo study of epithelial regeneration in animal models has shown that airway epithelial cells are able to dedifferentiate, spread, migrate over the denuded basement membrane and progressively redifferentiate to reconstitute a functional respiratory epithelium after several weeks. Humanised tracheal xenograft models have been developed in immunodeficient nude and severe combined immunodeficient (SCID mice in order to mimic the natural regeneration process of the human airway epithelium and to analyse the cellular and molecular events involved during the different steps of airway epithelial reconstitution. These models represent very powerful tools for analysing the modulation of the biological functions of the epithelium during its regeneration. They are also very useful for identifying stem/progenitor cells of the human airway epithelium. A better knowledge of the mechanisms involved in airway epithelium regeneration, as well as the characterisation of the epithelial stem and progenitor cells, may pave the way to regenerative therapeutics, allowing the reconstitution of a functional airway epithelium in numerous respiratory diseases, such as asthma, chronic obstructive pulmonary diseases, cystic fibrosis and bronchiolitis.

  1. Nuclear facilities maintenance in the core of management-advanced trend in IBM Maximo asset management applications

    International Nuclear Information System (INIS)

    Seino, Satoshi; Ujihara, Satoshi; Kikuyama, Kaoru

    2009-01-01

    European and US plant owners have attached importance to plant maintenance, such as prompt grasp of plant states, implementation of maintenance and planning of maintenance programs, as one of asset management. The US advanced trend was introduced in this feature article through the applications of IBM Maximo Asset Management for nuclear facilities maintenance. World trends of nuclear power and related problems, need of nuclear facilities management, key items for introduction of maintenance management systems, required systems for nuclear maintenance management and introduction of functions of the IBM strategic asset management solution-Maximo were described respectively. (T. Tanaka)

  2. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... that help thin and move the mucus, and antibiotics. Bronchodilators should be inhaled before you start ACTs. This medication helps to widen your airways (bronchi) by relaxing the ...

  3. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... Community in Health Care Reform Milestones in Health Care Reform How Tax Reform Could Impact People With CF The ... Home Life With CF Treatments and Therapies Airway Clearance ...

  4. Information management systems improve advanced plant design

    International Nuclear Information System (INIS)

    Turk, R.S.; Serafin, S.A.; Leckley, J.B.

    1994-01-01

    Computer-aided engineering tools are proving invaluable in both the design and operation of nuclear power plants. ABB Combustion Engineering's Advanced Light Water Reactor (ALWR) features a computerized Information Management System (IMS) as an integral part of the design. The System 80+IMS represents the most powerful information management tool for Nuclear Power Plants commercially available today. Developed by Duke Power Company specifically for use by nuclear power plant owner operators, the IMS consists of appropriate hardware and software to manage and control information flow for all plant related work or tasks in a systematic, consistent, coordinated and informative manner. A significant feature of this IMS is that it is primarily based on plant data. The principal design tool, PASCE (Plant Application and Systems from Combustion Engineering), is comprised of intelligent databases that describe the design and from which accurate plant drawings are created. Additionally the IMS includes, at its hub, a relational database management system and an associated document management system. The data-based approach and applications associated with the IMS were developed, and have proven highly effective, for plant modifications, configuration management, and operations and maintenance applications at Duke Power Company's operating nuclear plants. This paper presents its major features and benefits. 4 refs

  5. Radiation induced changes in the airway - anaesthetic implications ...

    African Journals Online (AJOL)

    Radiation induced changes in the airway - anaesthetic implications: case report. Mallika Balakrishnan, Renju Kuriakose, Rachel Cherian Koshy. Abstract. Radiation induces a variety of changes in the airway that can potentially lead to difficult intubation. Osteoradionecrosis (ORN) of the mandible, a severe consequence of ...

  6. Advancing Management Innovation: Synthesizing Processes, Levels of Analysis, and Change Agents

    NARCIS (Netherlands)

    Volberda, H.W.; van den Bosch, F.; Mihalache, R.O.

    2014-01-01

    Despite the mounting evidence that innovation in management can fuel competitive advantage, we still know relatively little about how firms introduce new ways of managing. The goal of this introductory essay—and the Themed Section it introduces—is to advance this knowledge. To this end, we first

  7. Reproducibility of airway luminal size in asthma measured by HRCT.

    Science.gov (United States)

    Brown, Robert H; Henderson, Robert J; Sugar, Elizabeth A; Holbrook, Janet T; Wise, Robert A

    2017-10-01

    Brown RH, Henderson RJ, Sugar EA, Holbrook JT, Wise RA, on behalf of the American Lung Association Airways Clinical Research Centers. Reproducibility of airway luminal size in asthma measured by HRCT. J Appl Physiol 123: 876-883, 2017. First published July 13, 2017; doi:10.1152/japplphysiol.00307.2017.-High-resolution CT (HRCT) is a well-established imaging technology used to measure lung and airway morphology in vivo. However, there is a surprising lack of studies examining HRCT reproducibility. The CPAP Trial was a multicenter, randomized, three-parallel-arm, sham-controlled 12-wk clinical trial to assess the use of a nocturnal continuous positive airway pressure (CPAP) device on airway reactivity to methacholine. The lack of a treatment effect of CPAP on clinical or HRCT measures provided an opportunity for the current analysis. We assessed the reproducibility of HRCT imaging over 12 wk. Intraclass correlation coefficients (ICCs) were calculated for individual airway segments, individual lung lobes, both lungs, and air trapping. The ICC [95% confidence interval (CI)] for airway luminal size at total lung capacity ranged from 0.95 (0.91, 0.97) to 0.47 (0.27, 0.69). The ICC (95% CI) for airway luminal size at functional residual capacity ranged from 0.91 (0.85, 0.95) to 0.32 (0.11, 0.65). The ICC measurements for airway distensibility index and wall thickness were lower, ranging from poor (0.08) to moderate (0.63) agreement. The ICC for air trapping at functional residual capacity was 0.89 (0.81, 0.94) and varied only modestly by lobe from 0.76 (0.61, 0.87) to 0.95 (0.92, 0.97). In stable well-controlled asthmatic subjects, it is possible to reproducibly image unstimulated airway luminal areas over time, by region, and by size at total lung capacity throughout the lungs. Therefore, any changes in luminal size on repeat CT imaging are more likely due to changes in disease state and less likely due to normal variability. NEW & NOTEWORTHY There is a surprising lack

  8. Upper airway evaluation

    International Nuclear Information System (INIS)

    Hoffman, E.A.; Gefter, W.B.; Schnall, M.; Nordberg, J.; Listerud, J.; Lenkinski, R.E.

    1988-01-01

    The authors are evaluating upper-airway sleep disorders with magnetic resonance (MR) imaging and x-ray cine computed tomography (CT). Fixed structural anatomy is visualized with multisection spin-echo MR imaging, the dynamic component with cine CT. Unique aspects of the study are described in this paper

  9. Airway Secretory microRNAome Changes during Rhinovirus Infection in Early Childhood.

    Directory of Open Access Journals (Sweden)

    Maria J Gutierrez

    Full Text Available Innate immune responses are fine-tuned by small noncoding RNA molecules termed microRNAs (miRs that modify gene expression in response to the environment. During acute infections, miRs can be secreted in extracellular vesicles (EV to facilitate cell-to-cell genetic communication. The purpose of this study was to characterize the baseline population of miRs secreted in EVs in the airways of young children (airway secretory microRNAome and examine the changes during rhinovirus (RV infection, the most common cause of asthma exacerbations and the most important early risk factor for the development of asthma beyond childhood.Nasal airway secretions were obtained from children (≤3 yrs. old during PCR-confirmed RV infections (n = 10 and age-matched controls (n = 10. Nasal EVs were isolated with polymer-based precipitation and global miR profiles generated using NanoString microarrays. We validated our in vivo airway secretory miR data in an in vitro airway epithelium model using apical secretions from primary human bronchial epithelial cells (HBEC differentiated at air-liquid interface (ALI. Bioinformatics tools were used to determine the unified (nasal and bronchial signature airway secretory miRNAome and changes during RV infection in children.Multiscale analysis identified four signature miRs comprising the baseline airway secretory miRNAome: hsa-miR-630, hsa-miR-302d-3p, hsa- miR-320e, hsa-miR-612. We identified hsa-miR-155 as the main change in the baseline miRNAome during RV infection in young children. We investigated the potential biological relevance of the airway secretion of hsa-mir-155 using in silico models derived from gene datasets of experimental in vivo human RV infection. These analyses confirmed that hsa-miR-155 targetome is an overrepresented pathway in the upper airways of individuals infected with RV.Comparative analysis of the airway secretory microRNAome in children indicates that RV infection is associated with airway

  10. Bronchology Treatment Of The Malignant Airway Stenosis

    International Nuclear Information System (INIS)

    Slivka, R. et al

    2007-01-01

    Central airway stenosis is benign or malignant etiology. Multidiscplinary approach is useful in treatment central airway stenosis. In inoperable cases, interventional bronchology is good therapeutic alternative. We can use NdYAG laser, argon plasma coagulation, elektrocautery, cryotherapy, photodynamic therapy and stents for obstruction release. In malignant stenosis, we combine often methods of the interventional bronchology with brachytherapy, chemotherapy and external radiotherapy. (author)

  11. Changes in sleep characteristics and airway obstruction in OSAHS patients with multi-level obstruction following simple UPPP, UPPP-GA, or UPPP-TBA: a prospective, single-center, parallel group study.

    Science.gov (United States)

    Chen, Shicai; Shi, Song; Xia, Yanghui; Liu, Fei; Chen, Donghui; Zhu, Minhui; Li, Meng; Zheng, Hongliang

    2014-01-01

    To investigate changes in S3 sleep and the apnea hypopnea index (AHI), SpO2 desaturation and CT90, and to determine changes in the degree of airway collapse and in the cross-sectional area of the retropalatal and lingual region in obstructive sleep apnea hypopnea syndrome patients. All subjects underwent overnight polysomnography and were evaluated using Müller's test and magnetic resonance imaging at baseline, 3, and 12 months following surgery. The mean S3 scores in patients receiving uvulopalatopharyngoplasty combined with genioglossus advancement (UPPP-GA) or UPPP combined with tongue base advancement using the Repose™ system (UPPP-TBA) noticeably increased. Marked improvement was seen in the mean AHI, LSO2, and CT90 scores 3 and 12 months following surgery compared to baseline. Airway collapsed by 25-50% in the greatest proportion undergoing surgery at the tongue base. UPPP-GA and UPPP-TBA more effectively improve S3 sleep, and mean AHI, LSO2, and CT90 scores. In addition, they effectively alleviate airway obstruction by improving the cross-sectional area of these regions. © 2014 S. Karger AG, Basel.

  12. Airway Obstruction Among Latino Poultry Processing Workers in North Carolina

    Science.gov (United States)

    MIRABELLI, MARIA C.; CHATTERJEE, ARJUN B.; MORA, DANA C.; ARCURY, THOMAS A.; BLOCKER, JILL N.; CHEN, HAIYING; GRZYWACZ, JOSEPH G.; MARÍN, ANTONIO J.; SCHULZ, MARK R.; QUANDT, SARA A.

    2015-01-01

    This analysis was conducted to evaluate the prevalence of airway obstruction among Latino poultry processing workers. Data were collected from 279 poultry processing workers and 222 other manual laborers via spirometry and interviewer-administered questionnaires. Participants employed in poultry processing reported the activities they perform at work. Participants with forced expiratory volume in 1 second (FEV1) or FEV1/forced expiratory volume (FVC) below the lower limits of normal were categorized as having airway obstruction. Airway obstruction was identified in 13% of poultry processing workers and 12% of the comparison population. Among poultry processing workers, the highest prevalence of airway obstruction (21%) occurred among workers deboning chickens (prevalence ratio: 1.75; 95% confidence interval: 0.97, 3.15). These findings identify variations in the prevalence of airway obstruction across categories of work activities. PMID:24965321

  13. Evaluation of obstructive airway lesions in complex congenital heart disease using composite volume-rendered images from multislice CT

    International Nuclear Information System (INIS)

    Choo, Ki Seok; Kim, Chang Won; Lee, Tae Hong; Kim, Suk; Kim, Kun Il; Lee, Hyoung Doo; Ban, Ji Eun; Sung, Si Chan; Chang, Yun Hee

    2006-01-01

    Multislice CT (MSCT) allows high-quality volume-rendered (VR) and composite volume-rendered images. To investigate the clinical usefulness of composite VR images in the evaluation of the relationship between cardiovascular structures and the airway in children with complex congenital heart disease (CHD). Four- or 16-slice MSCT scanning was performed consecutively in 77 children (mean age 6.4 months) with CHD and respiratory symptoms, a chest radiographic abnormality, or abnormal course of the pulmonary artery on ECHO. MSCT scanning was performed during breathing or after sedation. Contrast medium (2 ml/kg) was administered through a pedal venous route or arm vein in all patients. The VR technique was used to reconstruct the cardiovascular structures and airway, and then both VR images were composed using the commercial software (VoxelPlus 2 ; Daejeon, Korea). Stenoses were seen in the trachea in 1 patient and in the bronchi in 14 patients (19%). Other patients with complex CHD did not have significant airway stenoses. Composite VR images with MSCT can provide more exact airway images in relationship to the surrounding cardiovascular structures and thus help in optimizing management strategies in treating CHD. (orig.)

  14. Recent advances in managing differentiated thyroid cancer.

    Science.gov (United States)

    Lamartina, Livia; Grani, Giorgio; Durante, Cosimo; Filetti, Sebastiano

    2018-01-01

    The main clinical challenge in the management of thyroid cancer is to avoid over-treatment and over-diagnosis in patients with lower-risk disease while promptly identifying those patients with more advanced or high-risk disease requiring aggressive treatment. In recent years, novel clinical and molecular data have emerged, allowing the development of new staging systems, predictive and prognostic tools, and treatment approaches. There has been a notable shift toward more conservative management of low- and intermediate-risk patients, characterized by less extensive surgery, more selective use of radioisotopes (for both diagnostic and therapeutic purposes), and less intensive follow-up. Furthermore, the histologic classification; tumor, node, and metastasis (TNM) staging; and American Thyroid Association risk stratification systems have been refined, and this has increased the number of patients in the low- and intermediate-risk categories. There is now a need for new, prospective data to clarify how these changing practices will impact long-term outcomes of patients with thyroid cancer, and new follow-up strategies and biomarkers are still under investigation. On the other hand, patients with more advanced or high-risk disease have a broader portfolio of options in terms of treatments and therapeutic agents, including multitarget tyrosine kinase inhibitors, more selective BRAF or MEK inhibitors, combination therapies, and immunotherapy.

  15. Advances in battery manufacturing, service, and management systems

    CERN Document Server

    Zhou, Shiyu; Han, Yehui

    2016-01-01

    This book brings together experts in the field to highlight the cutting edge research advances in BM2S2 and to promote an innovative integrated research framework responding to the challenges. There are three major parts included in this book: manufacturing, service, and management. The first part focuses on battery manufacturing systems, including modeling, analysis, design and control, as well as economic and risk analyses. The second part focuses on information technology’s impact on service systems, such as data-driven reliability modeling, failure prognosis, and service decision making methodologies for battery services. The third part addresses battery management systems (BMS) for control and optimization of battery cells, opera ions, and hybrid storage systems to ensure overall performance and safety, as well as EV management.

  16. Chronic respiratory aeroallergen exposure in mice induces epithelial-mesenchymal transition in the large airways.

    Directory of Open Access Journals (Sweden)

    Jill R Johnson

    Full Text Available Chronic allergic asthma is characterized by Th2-polarized inflammation and leads to airway remodeling and fibrosis but the mechanisms involved are not clear. To determine whether epithelial-mesenchymal transition contributes to airway remodeling in asthma, we induced allergic airway inflammation in mice by intranasal administration of house dust mite (HDM extract for up to 15 consecutive weeks. We report that respiratory exposure to HDM led to significant airway inflammation and thickening of the smooth muscle layer in the wall of the large airways. Transforming growth factor beta-1 (TGF-β1 levels increased in mouse airways while epithelial cells lost expression of E-cadherin and occludin and gained expression of the mesenchymal proteins vimentin, alpha-smooth muscle actin (α-SMA and pro-collagen I. We also observed increased expression and nuclear translocation of Snail1, a transcriptional repressor of E-cadherin and a potent inducer of EMT, in the airway epithelial cells of HDM-exposed mice. Furthermore, fate-mapping studies revealed migration of airway epithelial cells into the sub-epithelial regions of the airway wall. These results show the contribution of EMT to airway remodeling in chronic asthma-like inflammation and suggest that Th2-polarized airway inflammation can trigger invasion of epithelial cells into the subepithelial regions of the airway wall where they contribute to fibrosis, demonstrating a previously unknown plasticity of the airway epithelium in allergic airway disease.

  17. Inflammatory cells and airway defense against Aspergillus fumigatus

    NARCIS (Netherlands)

    Kauffman, HF; Tomee, JFC

    The authors offer a summary of the attack strategies of A. fumigatus and interactions with the airway defense system. The possible role of proteolytic enzymes from Aspergillus in the inflammatory response of the airways is also discussed. Evidence is given for the in vivo production of these

  18. Recurrent airway obstructions in a patient with benign tracheal stenosis and a silicone airway stent: a case report

    OpenAIRE

    Sriram, KB; Robinson, PC

    2008-01-01

    Airway stents (silicone and metal stents) are used to treat patients with benign tracheal stenosis, who are symptomatic and in whom tracheal surgical reconstruction has failed or is not appropriate. However airway stents are often associated with complications such as migration, granuloma formation and mucous hypersecretion, which cause significant morbidity, especially in patients with benign tracheal stenosis and relatively normal life expectancy. We report a patient who had frequent critic...

  19. Diagnosis of bronchiectasis and airway wall thickening in children with cystic fibrosis

    DEFF Research Database (Denmark)

    Kuo, Wieying; de Bruijne, Marleen; Petersen, Jens

    2017-01-01

    Objectives: To quantify airway and artery (AA)-dimensions in cystic fibrosis (CF) and control patients for objective CT diagnosis of bronchiectasis and airway wall thickness (AWT). Methods: Spirometer-guided inspiratory and expiratory CTs of 11 CF and 12 control patients were collected retrospect......Objectives: To quantify airway and artery (AA)-dimensions in cystic fibrosis (CF) and control patients for objective CT diagnosis of bronchiectasis and airway wall thickness (AWT). Methods: Spirometer-guided inspiratory and expiratory CTs of 11 CF and 12 control patients were collected...... following airway generation (p

  20. External bioresorbable airway rigidification to treat refractory localized tracheomalacia.

    Science.gov (United States)

    Gorostidi, François; Reinhard, Antoine; Monnier, Philippe; Sandu, Kishore

    2016-11-01

    Our study evaluates the efficacy of extraluminal bioresorbable plates to treat refractory localized airway malacia in patients undergoing corrective surgery for complex multilevel laryngotracheal stenosis. Retrospective case series. Secondary malacic airway segments were characterized (severity, site, type) by a dynamic transnasal flexible laryngotracheobronchoscopy before surgery. Extraluminal bioresorbable plates were used to stabilize the malacic segment through a transcervical approach under intraoperative flexible endoscopic guidance. Results were evaluated subjectively and by a postoperative dynamic endoscopy. We report our experience in seven patients (6 children, 1 adult). External tracheal stiffening allowed complete or partial resolution of refractory proximal airway malacia in six of seven complex cases described (result in one case is awaited). It allowed quick decannulation in four of seven patients who experienced multiple previous failures. Decannulation failures were due to recurrence of stenosis. With up to 2 years of follow-up, we report no direct complications related to the presence of extraluminal bioresorbable plates around the airway. Extraluminal biodegradable tracheal stiffening represents a valid therapeutic option in select cases of upper airway malacia. It can be highly useful in cases of complex multilevel airway obstructions. External stiffening needs to be planned on a case-to-case basis according to the type of malacia and must be performed under endoscopic guidance. 4. Laryngoscope, 126:2605-2610, 2016. © 2016 The American Laryngological, Rhinological and Otological Society, Inc.