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Sample records for arrhythmia sinus

  1. Nonrespiratory Sinus Arrhythmia

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    Barbosa Filho José

    2002-01-01

    Full Text Available We report here 2 cases of sinus arrhythmia considered to be a form of nonrespiratory sinus arrhythmia because they did not have variances in the RR interval sequence within the oscillations modulated by respiration. Because the patients had pulsus alternans similar that observed in bigeminy, and because they did not have signs or symptoms of heart failure, we believe the arrhythmias represent intrinsic alterations of the electric activity of the sinus node

  2. Respiratory Sinus Arrhythmia and Emotional Reactions

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    Asmir Gračanin

    2015-12-01

    Full Text Available Respiratory sinus arrhythmia (RSA, which is considered to reflect parasympathetic activity, has received an increased scientific interest during the last several decades. Research on RSA in psychophysiology was especially focused on its relationship with the emotional process and related individual differences. This contribution starts with a short description of parasympathetic nervous system function and its influences on heart activity. This is followed by the description of the Polyvagal Theory and the model of neurovisceral integration, which represent a broad framework for an understanding of the relations between parasympathetic activity, workings of the central nervous system functions, cognitive processes, and emotional reactions. After a brief explanation of the way the RSA is typically measured, a short overview of experimental research directed to RSA changes that accompany emotional reactions and correlational research of the relations between baseline measures of RSA and emotional traits is presented. This research shows that different hypotheses derived from the Polyvagal theory and the Model of neurovisceral integration are confirmed primarily in the context of vagal withdrawal and decreased vagal tone that are related to stress reactions, emotion of fear and trait anxiety, and to a lesser extent to trait hostility. The final section includes a brief discussion on the sources of inconsistency in the results of experimental research of relations between basic emotions and RSA changes, such as the neglected role of cognitive processes and somatic activity.

  3. Fractal ventilation enhances respiratory sinus arrhythmia

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    Girling Linda G

    2005-05-01

    Full Text Available Abstract Background Programming a mechanical ventilator with a biologically variable or fractal breathing pattern (an example of 1/f noise improves gas exchange and respiratory mechanics. Here we show that fractal ventilation increases respiratory sinus arrhythmia (RSA – a mechanism known to improve ventilation/perfusion matching. Methods Pigs were anaesthetised with propofol/ketamine, paralysed with doxacurium, and ventilated in either control mode (CV or in fractal mode (FV at baseline and then following infusion of oleic acid to result in lung injury. Results Mean RSA and mean positive RSA were nearly double with FV, both at baseline and following oleic acid. At baseline, mean RSA = 18.6 msec with CV and 36.8 msec with FV (n = 10; p = 0.043; post oleic acid, mean RSA = 11.1 msec with CV and 21.8 msec with FV (n = 9, p = 0.028; at baseline, mean positive RSA = 20.8 msec with CV and 38.1 msec with FV (p = 0.047; post oleic acid, mean positive RSA = 13.2 msec with CV and 24.4 msec with FV (p = 0.026. Heart rate variability was also greater with FV. At baseline the coefficient of variation for heart rate was 2.2% during CV and 4.0% during FV. Following oleic acid the variation was 2.1 vs. 5.6% respectively. Conclusion These findings suggest FV enhances physiological entrainment between respiratory, brain stem and cardiac nonlinear oscillators, further supporting the concept that RSA itself reflects cardiorespiratory interaction. In addition, these results provide another mechanism whereby FV may be superior to conventional CV.

  4. Coregulation of respiratory sinus arrhythmia in adult romantic partners.

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    Helm, Jonathan L; Sbarra, David A; Ferrer, Emilio

    2014-06-01

    Questions surrounding physiological interdependence in romantic relationships are gaining increased attention in the research literature. One specific form of interdependence, coregulation, can be defined as the bidirectional linkage of oscillating signals within optimal bounds. Conceptual and theoretical work suggests that physiological coregulation should be instantiated in romantic couples. Although these ideas are appealing, the central tenets of most coregulatory models await empirical evaluation. In the current study, we evaluate the covariation of respiratory sinus arrhythmia (RSA) in 32 romantic couples during a series of laboratory tasks using a cross-lagged panel model. During the tasks, men's and women's RSA were associated with their partners' previous RSA responses, and this pattern was stronger for those couples with higher relationship satisfaction. The findings are discussed in terms of their implications for attachment theory, as well as the association between relationships and health.

  5. Respiratory sinus arrhythmia: A marker of deceased parasympathetic modulation after short duration spaceflight

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    Migeotte, P. F.; Sa, R. C.; Prisk, Kim G.; Paiva, M.

    2005-08-01

    We investigated the hypothesis that the effects of a short duration spaceflight on the autonomic nervous system can be reflected in the respiratory component of heart rate variability (HRV), the respiratory sinus arrhythmia (RSA).

  6. Effect of Different Pranayamas on Respiratory Sinus Arrhythmia

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    Raj, Jeneth Berlin; Ramanathan, Meena; Trakroo, Madanmohan

    2016-01-01

    Introduction Respiratory Sinus Arrhythmia (RSA) is the differential change of Heart Rate (HR) in response to inspiration and expiration. This is a noninvasive sensitive index of parasympathetic cardiac control. Aim To evaluate changes in RSA by utilizing a simple and cost-effective analysis of electrocardiographic (ECG) tracings obtained during performance of four pranayama techniques. Materials and Methods Fifty two trained volunteers performed the following pranayamas with different ratios for inspiration and expiration: sukha (1:1), traditional (1:2), pranava (1:3) and savitri (2:1:2:1) and ECG was recorded while performing the techniques with rest period of 5 minutes in-between. HR was calculated and maximum HR during inspiration (Imax), minimum HR during expiration (Emin), differences between Imax and Emin (Δ), percentage differences between Imax and Emin (Δ%) and expiration: inspiration ratio (E:I) calculated by respective formulae. Statistical analysis was carried out using repeated measures of ANOVA with Tukey-Kramer multiple comparisons test. Results There were significant differences between groups in all five aspects namely: p= 0.0093 for mean Imax, p = 0.0009 for mean Emin, and p < 0.0001 for Δ HR (I-E), Δ% HR (I-E) and E:I ratio. Pranava pranayama produced the greatest changes in all five comparisons. Conclusion We suggest that further short and long term studies be undertaken with pranava pranayama in patients to further qualitatively and quantitatively evaluate inherent mechanisms of this simple technique. Addition of these cost-effective techniques to the medical armory will help patients of rhythm disorders and other cardiovascular conditions. PMID:27134863

  7. Arrhythmia

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    An arrhythmia is a problem with the rate or rhythm of your heartbeat. It means that your heart beats ... is called bradycardia. The most common type of arrhythmia is atrial fibrillation, which causes an irregular and ...

  8. Interactive effects of social adversity and respiratory sinus arrhythmia activity on reactive and proactive aggression.

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    Zhang, Wei; Gao, Yu

    2015-10-01

    Abnormal parasympathetic nervous system (PNS)-related cardiac activity has been linked to aggression. However, little is known about how it interacts with psychosocial adversity in predisposing to reactive-proactive aggression. In the current study, 84 male and female college students self-reported reactive and proactive aggression, and were assessed for respiratory sinus arrhythmia (RSA), a measure of PNS-related cardiac activity, during rest and when they contemplated an emotion-evoking decision-making task. Regression analyses showed that (a) resting RSA was positively linked to reactive aggression in conditions of high social adversity, and (b) RSA reactivity was positively associated with reactive but negatively associated with proactive aggression, in conditions of low social adversity. Main effects were not found for psychophysiological functioning or psychosocial adversity, suggesting the importance of their interaction. Findings support a biosocial basis for aggression and add additional support for the distinctions between reactive and proactive aggression.

  9. Buffering blood pressure fluctuations by respiratory sinus arrhythmia may in fact enhance them: a theoretical analysis

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    Buchner, Teodor; Gielerak, Grzegorz

    2010-01-01

    Using a three-compartment model of blood pressure dynamics, we analyze theoretically the short term cardiovascular variability: how the respiratory-related blood pressure fluctuations are buffered by appropriate heart rate changes: i.e. the respiratory sinus arrhythmia. The buffering is shown to be crucially dependent on the time delay between the stimulus (such as e.g. the inspiration onset) and the application of the control (the moment in time when the efferent response is delivered to the heart). This theoretical analysis shows that the buffering mechanism is effective only in the upright position of the body. It explains a paradoxical effect of enhancement of the blood pressure fluctuations by an ineffective control. Such a phenomenon was observed experimentally. Using the basis of the model, we discuss the blood pressure variability and heart rate variability under such clinical conditions as the states of expressed adrenergic drive and the tilt-test during the parasympathetic blockade or fixed rate atr...

  10. Arrhythmias

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    Hanan Zaghla

    2013-07-01

    Conclusion: Our results rule out the electropathy hypothesis and underline autonomic neuropathy as the most possible mechanism of arrhythmias in hypoxaemic, non-respiratory failure, and COPD patients.

  11. Respiratory sinus arrhythmia during worry forecasts stress-related increases in psychological distress.

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    Gouin, Jean-Philippe; Deschênes, Sonya S; Dugas, Michel J

    2014-09-01

    Respiratory sinus arrhythmia (RSA) has been conceptualized as an index of emotion regulation abilities. Although resting RSA has been associated with both concurrent and prospective affective responses to stress, the impact of RSA reactivity on emotional responses to stress is inconsistent across studies. The type of emotional stimuli used to elicit these phasic RSA responses may influence the adaptive value of RSA reactivity. We propose that RSA reactivity to a personally relevant worry-based stressor might forecast future affective responses to stress. To evaluate whether resting RSA and RSA reactivity to worry inductions predict stress-related increases in psychological distress, an academic stress model was used to prospectively examine changes in psychological distress from the well-defined low- and high-stress periods. During the low-stress period, 76 participants completed self-report mood measures and had their RSA assessed during a resting baseline, free worry period and worry catastrophizing interview. Participants completed another mood assessment during the high-stress period. Results indicated that baseline psychological distress predicted larger decreases in RSA during the worry inductions. Lower resting RSA and greater RSA suppression to the worry inductions at baseline prospectively predicted larger increases in psychological distress from the low- to high-stress period, even after accounting for the impact of baseline distress on RSA. These results provide further evidence that RSA may represent a unique index of emotion regulation abilities in times of stress.

  12. High Accuracy Extraction of Respiratory Sinus Arrhythmia with Statistical Processing using Normal Distribution

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    Numata, Takashi; Ogawa, Yutaro; Yoshida, Lui; Kotani, Kiyoshi; Jimbo, Yasuhiko

    The autonomic nervous system is important in maintaining homeostasis by mediating the opposing effects of the sympathetic and parasympathetic nervous activity on organs. Although it is known that the amplitude of RSA (Respiratory Sinus Arrhythmia) is an index of parasympathetic nervous activity, it is difficult to estimate that activity in real-time in everyday situations. It is partly caused by body motions and extrasystoles. Also, automatic recognition of the R-wave on electrocardiograms is required for real-time analysis of RSA amplitude, there is an unresolved problem of false recognition of the R-wave. In this paper, we propose a method to evaluate the amplitude of RSA accurately using statistical processing with probabilistic models. Then, we estimate parasympathetic nervous activity during body motion and isometric exercise to examine the validity of the method. As a result, using the proposed method, we demonstrate that the amplitude of RSA can be extracted with false recognition of the R-wave. In addition, an appropriate threshold for the estimate is one or five percent because waveforms of RSA amplitude do not follow the abrupt changes of the parasympathetic nervous activity evoked by isometric exercise with the threshold at ten percent. Furthermore, the method using normal distribution is found to be more appropriate than that of chi-square distribution for statistical processing. Therefore, we expect that the proposed method can evaluate parasympathetic nervous activity with high accuracy in everyday situations.

  13. Sleep and cognitive performance: the role of income and respiratory sinus arrhythmia reactivity.

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    Staton, Lori; Hinnant, J Benjamin; Buckhalt, Joseph; El-Sheikh, Mona

    2014-11-01

    A health disparities view suggests that low family income status acts as a risk factor for poor cognitive functioning. A biosystems view suggests that poor sleep and poor stress response system functioning are also risk factors. These views are rarely integrated to test multiplicative risk or protective effects from social-cultural and biological variables. We investigated interactions among familial income, children's sleep and respiratory sinus arrhythmia reactivity (RSA reactivity, indexing parasympathetic nervous system reactivity) in the prediction of cognitive performance of school-aged children. Participants were 282 children (146 boys; 35% African American and 65% European American; M age = 9.42 years, SD = .71). Mothers reported on family income. Children's sleep quality (efficiency) and duration (minutes) were assessed via a week of actigraphy. Children's RSA reactivity to an attention demanding and frustrating star tracing challenge was assessed in the lab. Children completed standardized cognitive assessments examining attention, processing speed, and crystallized cognitive functioning. Findings show that more optimal sleep efficiency and RSA reactivity interact to confer protection against poor cognitive performance, particularly for children from lower income homes. Results build on the literature and suggest that interactions between biological systems and socioeconomic variables are key for understanding children's cognitive performance.

  14. Associations between narcissism and emotion regulation difficulties: Respiratory sinus arrhythmia reactivity as a moderator.

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    Zhang, Hui; Wang, Zhenhong; You, Xuqun; Lü, Wei; Luo, Yun

    2015-09-01

    The aim of the current study was to examine the direct and interactive effects of two types of narcissism (overt and covert) and respiratory sinus arrhythmia (RSA) reactivity on emotion regulation difficulties in 227 undergraduate students. Overt and covert narcissism and emotion regulation difficulties were assessed with self-report measures (narcissistic personality inventory (NPI)-16, hypersensitive narcissism scale (HSNS), and difficulties in emotion regulation scale (DERS)), and physiological data were measured during the baseline, stress (a public-speaking task), and recovery periods in the laboratory. Results indicated that overt narcissism was negatively related to a lack of emotional awareness and emotional clarity, whereas covert narcissism was positively related to overall emotion regulation difficulties, nonacceptance of emotional responses, impulse control difficulties, limited access to emotion regulation strategies, and a lack of emotional clarity. RSA reactivity in response to a mock job interview moderated the associations between covert narcissism (as a predictor) and overall emotion regulation difficulties and impulse control difficulties (as outcomes). This finding showed that a greater stress-induced RSA decrease may serve as a protective factor and ameliorate the effect of covert narcissism on individuals' emotion regulation difficulties.

  15. [Late arrhythmias in the operated interatrial communication. Analysis of sinus node function and the conduction pathways by His bundle electrocardiography].

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    Ramírez, A; Gil, M; Martínez Ríos, M A; Cárdenas, M; Pliego, J; Zamora, C; Mata, L A

    1982-01-01

    Four hundred patients with atrial septal defect treated surgically were reviewed. Thirty five (8.7%) developed arrhytmias post-surgery which persisted for over a year. Sinus bradycardia was found in 10 patients, nodal rhythm in 21, and atrial fibrilation and flutter in 4 patients. Thirty five per cent of the patients with late arrhythmias developed related symptomatology. In 14 patients the function of the sinus node was studied with electrical stimulation of the atrium and with His registry. The interatrial conduction time, AV node and His Purkinje were analized employing various stimulation frequencies. All the cases studied had normal intra-atrial conduction; the response of the atrio-ventricular node to increasing frequencies was normal, an the intraventricular conduction remained constant. In 8 patients (52%), alterations of the sinus node were found; these consisted of prolonged post-stimulation pauses, Wenckebach's type sinoatrial block and suppression of sinus automatism employing vagal procedures or through electrical stimulation. A patient with severe bradycardia detected by dynamic electrocardiography had to be treated with a permanent pacemaker. We confirm that these arrhytmias are not produced by lesions of the internodal tracts, and that an alteration of the sinus node is frequent without a concomitant lesion of the intraventricular pathway. The lesion to the nutrient artery could be due to trauma and/or surgically induced. The response to anticholinergic drugs was good. Prolonged observation of these patients could increase the morbility of these arrythmias and raise doubts of the surgical indications in cases with moderate hemodynamic repercussion.

  16. Improving Managers' Psychophysical Well-Being: Effectiveness of Respiratory Sinus Arrhythmia Biofeedback.

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    Munafò, Marianna; Patron, Elisabetta; Palomba, Daniela

    2016-06-01

    High work stress has been consistently associated with disturbed autonomic balance, specifically, lowered vagal cardiac control and increased sympathetic activity, which may lead to increased cardiovascular risk. Stress management procedures have been proposed to reduce autonomic dysfunctions related to work stress in different categories of workers exposed to heightened work demands, while a limited number of studies addressed this issue in managers. The present study was aimed at evaluating the effectiveness of a respiratory sinus arrhythmia (RSA) biofeedback (BF) intervention on psychological and physiological outcomes, in managers with high-level work responsibilities. Thirty-one managers leading outstanding private or public companies were randomly assigned to either a RSA-BF training (RSA-BF; N = 16) or a control group (N = 15). The RSA-BF training consisted of five weekly 45 min sessions, designed to increase RSA, whereas controls had to provide a daily stress diary once a week. After the training, managers in both groups reported reduced heart rate at rest, lower anxiety levels and improvement in health-related quality of life. More importantly, managers in the RSA-BF group showed increased vagal control (as indexed by increased RSA), decreased sympathetic arousal (as indexed by reduced skin conductance and systolic blood pressure) and lower emotional interferences, compared to managers in the control group. Results from this study showed that RSA-BF training was effective in improving cardiac autonomic balance at rest. Moreover, findings from this study underline the effectiveness of biofeedback in reducing psychophysiological negative outcomes associated with stress in managers.

  17. Sinusitis

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    Sinusitis means your sinuses are inflamed. The cause can be an infection or another problem. Your sinuses ... and cause pain. There are several types of sinusitis, including Acute, which lasts up to 4 weeks ...

  18. Sinusitis

    OpenAIRE

    2000-01-01

    ¿Qué son los senos para nasales?/ ¿Qué es la sinusitis?/Tipos de sinusitis/Causas de sinusitis/Factores que predisponen/La sinusitis y su relación con otras enfermedades del tracto respiratorio/Signos y síntomas/Complicaciones de la sinusitis.

  19. The effects of respiratory sinus arrhythmia biofeedback on heart rate variability and posttraumatic stress disorder symptoms: a pilot study.

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    Zucker, Terri L; Samuelson, Kristin W; Muench, Frederick; Greenberg, Melanie A; Gevirtz, Richard N

    2009-06-01

    Recent studies have found a significant association between PTSD and low heart rate variability (HRV), a biomarker of autonomic dysregulation. Research indicates that respiratory sinus arrhythmia (RSA) biofeedback increases HRV while reducing related pathological symptoms. This controlled pilot study compared RSA biofeedback to progressive muscle relaxation (PMR) as adjunctive interventions for 38 persons with PTSD symptoms in a residential treatment facility for a substance use disorder. Both groups were assessed at pre-intervention and 4-week post-intervention. Group x time interactions revealed significantly greater reductions in depressive symptoms and increases in HRV indices for the RSA group. Both groups significantly reduced PTSD and insomnia symptoms and a statistical trend was observed for reduced substance craving for the RSA group. Increases in HRV were significantly associated with PTSD symptom reduction. Overall, these results provide preliminary support for the efficacy of RSA biofeedback in improving physiological and psychological health for individuals with PTSD.

  20. Respiratory sinus arrhythmia: a marker for positive social functioning and receptive language skills in children with autism spectrum disorders.

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    Patriquin, Michelle A; Scarpa, Angela; Friedman, Bruce H; Porges, Stephen W

    2013-03-01

    The current study builds on the emerging autism spectrum disorder (ASD) literature that associates autonomic nervous system activity with social function, and examines the link between respiratory sinus arrhythmia (RSA) and both social behavior and cognitive function. The RSA response pattern was assessed in 23 4- to 7-year-old children diagnosed with an ASD. Higher baseline RSA amplitudes were associated with better social behavior (i.e., more conventional gestures, more instances of joint attention) and receptive language abilities. Similar to reports of typically developing children, ASD children with higher RSA amplitude at baseline showed greater RSA and HP reactivity during an attention-demanding task. These results highlight the importance of studying RSA as a marker of positive function in children with ASD.

  1. Respiratory sinus arrhythmia during anaesthesia: assessment of respiration related beat-to-beat heart rate variability analysis methods.

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    Loula, P; Jäntti, V; Yli-Hankala, A

    1997-11-01

    Beat-to-beat heart rate variability analysis is a powerful tool for the diagnosis of neuropathy. Respiration-related heart rate variability (respiratory sinus arrhythmia, RSA) reflects the function of parasympathetic nervous system during spontaneous ventilation while awake. RSA is also claimed to monitor the depth of anaesthesia. Power spectrum analysis or various averaging techniques of the heart rate variability are usually applied. The current literature, however, does not usually interpret the ground rules and limitations of the method used, and this may sometimes lead to erroneous conclusions on the data. The aim of our study was to compare and analyse critically the performance of different methods of evaluating RSA during anaesthesia and positive pressure ventilation. Power spectrum analysis, the root mean square of the successive RR-interval difference (RMSSD), and two respiration related methods, RSA index and average phase RSA, were included in the comparison. To test these methods, 11 patients were anaesthetised with isoflurane and their lungs were ventilated mechanically with a frequency of 6 cycles min-1. Each patient received a bolus dose of atropine (20 micrograms kg-1) during the trial. Electrocardiogram, electroencephalogram and tracheal pressure signal from respirator were recorded and analyses were performed off-line. We demonstrated that general indices, such as RMSSD, may be strongly affected by heart rate level and other non-respiration related variations in heart rate. We also showed that the effect of unwanted fluctuations on RSA can be reduced with respiration dependent beat-to-beat methods. Furthermore we confirmed that in addition to the amplitude, also the pattern of respiratory sinus arrhythmia is of interest: the pattern is reversed in phase compared to spontaneous breathing while awake, as we have shown earlier. To analyse RSA during anaesthesia, we recommend the use of an average phase RSA method based on beat-to-beat variability

  2. Relational victimization and proactive versus reactive relational aggression: The moderating effects of respiratory sinus arrhythmia and skin conductance.

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    Wagner, Caitlin R; Abaied, Jamie L

    2015-01-01

    This research examined the moderating effect of the autonomic nervous system (ANS) on the associations between relational victimization and reactive and proactive relational aggression. Both branches of the ANS, the parasympathetic nervous system (indexed by respiratory sinus arrhythmia reactivity; RSA-Reactivity) and the sympathetic nervous system (indexed by skin conductance level reactivity; SCL-Reactivity), were examined. Emerging adults (N = 168) self-reported on relational victimization and proactive and reactive relational aggression; RSA-Reactivity and SCL-Reactivity were assessed in response to a laboratory stressor. Relational victimization predicted heightened reactive relational aggression given RSA augmentation/high SCL-Reactivity (i.e., coactivation) and RSA withdrawal/low SCL-Reactivity (i.e., coinhibition). In addition, relational victimization predicted heightened reactive relational aggression given RSA augmentation/low SCL-Reactivity (i.e., reciprocal parasympathetic activation). This study extends previous research on relational victimization and provides novel evidence that (a) exposure to relational victimization is associated with reactive relational aggression, but not proactive relational aggression, and (b) parasympathetic and sympathetic nervous system reactivity jointly moderate the link between relational victimization and reactive relational aggression.

  3. Broad implications for respiratory sinus arrhythmia development: associations with childhood symptoms of psychopathology in a community sample.

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    Patriquin, Michelle A; Lorenzi, Jill; Scarpa, Angela; Calkins, Susan D; Bell, Martha Ann

    2015-01-01

    Replicating the group-based developmental trajectory methodology from our prior study (Patriquin, Lorenzi, Scarpa, & Bell. 2014. Developmental Psychobiology, 56, 317-326), the current study examines the development of baseline respiratory sinus arrhythmia (RSA) across a new, larger cohort of typically developing children at 5, 10, 24, 36, and 48 months of age and examines the trajectory relationship with symptoms of childhood psychopathology. Group-based developmental trajectory modeling replicated our prior findings of a two-group model fit: a "High RSA" and "Low RSA" group. The "Low RSA" group, which demonstrated lower baseline RSA across all time points, had significantly more childhood problems at 48 months, namely increased withdrawal, aggressive behavior, pervasive developmental problems, and oppositional defiant problems. All participants for whom there were developmental or autism spectrum concerns (n = 6; based on maternal report at 48 months) were allocated to the Low RSA trajectory group. These results suggest that consistent developmental trajectories of RSA may point to protective factors (i.e., high RSA) against developing symptoms of childhood psychopathology.

  4. Respiratory Sinus Arrhythmia as an Index of Vagal Activity during Stress in Infants: Respiratory Influences and Their Control

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    Ritz, Thomas; Bosquet Enlow, Michelle; Schulz, Stefan M.; Kitts, Robert; Staudenmayer, John; Wright, Rosalind J.

    2012-01-01

    Respiratory sinus arrhythmia (RSA) is related to cardiac vagal outflow and the respiratory pattern. Prior infant studies have not systematically examined respiration rate and tidal volume influences on infant RSA or the extent to which infants' breathing is too fast to extract a valid RSA. We therefore monitored cardiac activity, respiration, and physical activity in 23 six-month old infants during a standardized laboratory stressor protocol. On average, 12.6% (range 0–58.2%) of analyzed breaths were too short for RSA extraction. Higher respiration rate was associated with lower RSA amplitude in most infants, and lower tidal volume was associated with lower RSA amplitude in some infants. RSA amplitude corrected for respiration rate and tidal volume influences showed theoretically expected strong reductions during stress, whereas performance of uncorrected RSA was less consistent. We conclude that stress-induced changes of peak-valley RSA and effects of variations in breathing patterns on RSA can be determined for a representative percentage of infant breaths. As expected, breathing substantially affects infant RSA and needs to be considered in studies of infant psychophysiology. PMID:23300753

  5. Respiratory sinus arrhythmia as an index of vagal activity during stress in infants: respiratory influences and their control.

    Directory of Open Access Journals (Sweden)

    Thomas Ritz

    Full Text Available Respiratory sinus arrhythmia (RSA is related to cardiac vagal outflow and the respiratory pattern. Prior infant studies have not systematically examined respiration rate and tidal volume influences on infant RSA or the extent to which infants' breathing is too fast to extract a valid RSA. We therefore monitored cardiac activity, respiration, and physical activity in 23 six-month old infants during a standardized laboratory stressor protocol. On average, 12.6% (range 0-58.2% of analyzed breaths were too short for RSA extraction. Higher respiration rate was associated with lower RSA amplitude in most infants, and lower tidal volume was associated with lower RSA amplitude in some infants. RSA amplitude corrected for respiration rate and tidal volume influences showed theoretically expected strong reductions during stress, whereas performance of uncorrected RSA was less consistent. We conclude that stress-induced changes of peak-valley RSA and effects of variations in breathing patterns on RSA can be determined for a representative percentage of infant breaths. As expected, breathing substantially affects infant RSA and needs to be considered in studies of infant psychophysiology.

  6. Child sex and respiratory sinus arrhythmia reactivity as moderators of the relation between internalizing symptoms and aggression.

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    Aults, Christopher D; Cooper, Patrick J; Pauletti, Rachel E; Jones, Nancy Aaron; Perry, David G

    2015-12-01

    Previous studies have examined sex differences in physiological responding, including respiratory sinus arrhythmia (RSA) reactivity in response to changing stimulus conditions involving situation specific or gender related cues, in children and adolescents. The present study examined whether RSA reactivity moderates the relation between aggression and internalizing symptoms and whether there are sex differences in this effect. Participants were 82 adolescents (M age = 12.1 years; 44 girls) from the general middle-school population. Peer nominations assessed aggression and internalizing symptoms, and RSA reactivity (defined as change in RSA from baseline to task) was recorded while participants anticipated and responded to an 85 dB signaled white-noise burst. For girls, internalizing symptoms were associated with aggression only if girls showed low RSA reactivity from baseline to task; there was no effect for boys. This association was absent when girls showed high RSA reactivity. Thus, child sex appears to influence not only levels of physiological responding but also relations of physiological responding to comorbidity of adjustment problems.

  7. Sinusitis

    Science.gov (United States)

    ... the result of an infection from a virus, bacteria, or fungus. Causes The sinuses are air-filled spaces in ... than 3 months. It may be caused by bacteria or a fungus. The following may increase the risk that an ...

  8. Evidence for a respiratory component, similar to mammalian respiratory sinus arrhythmia, in the heart rate variability signal from the rattlesnake, Crotalus durissus terrificus.

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    Campbell, Hamish A; Leite, Cleo A C; Wang, Tobias; Skals, Marianne; Abe, Augusto S; Egginton, Stuart; Rantin, F Tadeu; Bishop, Charles M; Taylor, Edwin W

    2006-07-01

    Autonomic control of heart rate variability and the central location of vagal preganglionic neurones (VPN) were examined in the rattlesnake (Crotalus durissus terrificus), in order to determine whether respiratory sinus arrhythmia (RSA) occurred in a similar manner to that described for mammals. Resting ECG signals were recorded in undisturbed snakes using miniature datalogging devices, and the presence of oscillations in heart rate (fh) was assessed by power spectral analysis (PSA). This mathematical technique provides a graphical output that enables the estimation of cardiac autonomic control by measuring periodic changes in the heart beat interval. At fh above 19 min(-1) spectra were mainly characterised by low frequency components, reflecting mainly adrenergic tonus on the heart. By contrast, at fh below 19 min(-1) spectra typically contained high frequency components, demonstrated to be cholinergic in origin. Snakes with a fh >19 min(-1) may therefore have insufficient cholinergic tonus and/or too high an adrenergic tonus acting upon the heart for respiratory sinus arrhythmia (RSA) to develop. A parallel study monitored fh simultaneously with the intraperitoneal pressures associated with lung inflation. Snakes with a fhrate (fv). Adrenergic blockade by propranolol infusion increased the variability of the ventilation cycle, and the oscillatory component of the fh spectrum broadened accordingly. Infusion of atropine to effect cholinergic blockade abolished this HF component, confirming a role for vagal control of the heart in matching fh and fv in the rattlesnake. A neuroanatomical study of the brainstem revealed two locations for vagal preganglionic neurones (VPN). This is consistent with the suggestion that generation of ventilatory components in the heart rate variability (HRV) signal are dependent on spatially distinct loci for cardiac VPN. Therefore, this study has demonstrated the presence of RSA in the HRV signal and a dual location for VPN in the

  9. The contributions of early adverse experiences and trajectories of respiratory sinus arrhythmia on the development of neurobehavioral disinhibition among children with prenatal substance exposure.

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    Conradt, Elisabeth; Degarmo, David; Fisher, Phil; Abar, Beau; Lester, Barry M; Lagasse, Linda L; Shankaran, Seetha; Bada, Henrietta; Bauer, Charles R; Whitaker, Toni M; Hammond, Jane A

    2014-11-01

    Neurobehavioral disinhibition (ND) is a complex condition reflecting a wide range of problems involving difficulties with emotion regulation and behavior control. Respiratory sinus arrhythmia (RSA) is a physiological correlate of emotion regulation that has been studied in a variety of at-risk populations; however, there are no studies of RSA in children with ND. Data were drawn from a prospective longitudinal study of prenatal substance exposure that included 1,073 participants. Baseline RSA and RSA reactivity to an attention-demanding task were assessed at 3, 4, 5, and 6 years. ND was assessed at ages 8/9, 11, and 13/14 years via behavioral dysregulation and executive dysfunction composite measures. Greater exposure to early adversity was related to less RSA reactivity at 3 years, increases in RSA reactivity from ages 3 to 6 years, and increased behavioral dysregulation from ages 8/9 to 13/14. RSA reactivity was examined as a moderator of the association between early adversity and changes in ND. A significant Early Adversity × RSA Reactivity quadratic interaction revealed that children with decelerations in RSA reactivity exhibited increases in behavioral dysregulation, regardless of their exposure to early adversity. However, greater exposure to early adversity was related to greater increases in behavioral dysregulation, but only if children exhibited accelerations in RSA reactivity from ages 3 to 6 years. The results contribute to our understanding of how interactions across multiple levels of analysis contribute to the development of ND.

  10. Early caregiving stress exposure moderates the relation between respiratory sinus arrhythmia reactivity at 1 month and biobehavioral outcomes at age 3.

    Science.gov (United States)

    Conradt, Elisabeth; Beauchaine, Theodore; Abar, Beau; Lagasse, Linda; Shankaran, Seetha; Bada, Henrietta; Bauer, Charles; Whitaker, Toni; Hammond, Jane; Lester, Barry

    2016-01-01

    There is a growing scientific interest in the psychophysiological functioning of children living in low-socioeconomic status (SES) contexts, though this research is complicated by knowledge that physiology-behavior relations often operate differently in these environments among adults. Importantly, such research is made more difficult because SES may be a proxy for a wide range of risk factors including poor caregiving and exposure to parental substance use. We used factor analysis to organize risk-exposure data collected from 827 children-many of whom were raised in low-SES contexts and exposed to substances prenatally-into dissociable components including economic stress, caregiving stress (e.g., stress the caregiver may experience, including parental psychopathology), and postnatal substance exposure. These factors, along with respiratory sinus arrhythmia (RSA) reactivity at age 1 month, were used to predict behavior dysregulation and resting RSA at age 3 years. A significant RSA Reactivity × Caregiving Stress interaction indicated that infants who exhibited high RSA reactivity at 1 month experienced the greatest behavior dysregulation at 3 years, but only when they were exposed to high levels of caregiving stress. Among African Americans, the highest resting RSA at 3 years was found in infants with less RSA reactivity, but only if they also experienced less caregiving stress. Our work is consistent with biological sensitivity to context, adaptive calibration, and allostatic load models, and highlights the importance of studying Physiology × Environment interactions in low-SES contexts for predicting behavior and resting RSA.

  11. Respiratory sinus arrhythmia as a predictor of eating disorder symptoms in college students: Moderation by responses to stress and parent psychological control.

    Science.gov (United States)

    Abaied, Jamie L; Wagner, Caitlin; Breslend, Nicole Lafko; Flynn, Megan

    2016-04-01

    This longitudinal study examined the prospective contribution of respiratory sinus arrhythmia (RSA), a key physiological indicator of self-regulation, to eating disorder symptoms in college students, and whether this link was moderated by maladaptive responses to stress and parent psychological control. At Wave 1, college students' RSA was measured at rest. At Waves 1 and 2 (six-month follow-up), students reported on their eating disorder symptoms, coping and involuntary responses to stress, and perceptions of their parents' use of psychological control. Significant three-way interactions indicated that the link between RSA and subsequent eating disorder symptoms was contingent on responses to stress and parent psychological control. In the context of maladaptive responses to stress and high psychological control, RSA predicted increased eating disorder symptoms over time. In the absence of parent psychological control, high RSA was beneficial in most cases, even when individuals reported maladaptive responses to stress. This study presents novel evidence that high RSA contributes to risk for or resilience to eating disorder symptoms over time. RSA can be protective against eating disorder symptoms, but in some contexts, the self-regulation resources that high RSA provides may be inappropriately applied to eating cognitions and behaviors. This research highlights the importance of examining physiological functioning conjointly with other risk factors as precursors to eating disorder symptoms over time.

  12. Biofeedback assisted control of respiratory sinus arrhythmia as a biobehavioral intervention for depressive symptoms in patients after cardiac surgery: a preliminary study.

    Science.gov (United States)

    Patron, Elisabetta; Messerotti Benvenuti, Simone; Favretto, Giuseppe; Valfrè, Carlo; Bonfà, Carlotta; Gasparotto, Renata; Palomba, Daniela

    2013-03-01

    The current study investigated whether biofeedback training aimed at increasing respiratory sinus arrhythmia (RSA), a measure of cardiac vagal modulation, can reduce depressive symptoms in patients after cardiac surgery. This randomized controlled study enrolled 26 patients after first-time cardiac surgery. The patients were randomly assigned to an RSA-biofeedback group (N = 13) or to a treatment as usual group (N = 13). The biofeedback training consisted of five 45 min sessions designed to increase RSA. The outcome was assessed as changes in RSA and in the Centre for Epidemiologic Studies of Depression (CES-D) values from pre- to post-training. Both groups were comparable for demographic and biomedical characteristics. RSA increased significantly in patients who underwent RSA-biofeedback compared to controls. Moreover, the CES-D scores were reduced significantly from pre- to post-training in the RSA-biofeedback group compared to the controls. Changes in RSA were inversely related to changes in CES-D scores from pre- to post-training. These findings extend the effectiveness of RSA-biofeedback for increasing vagal modulation as well as for reducing depressive symptoms in post-surgical patients. Overall, the current study also suggests that this biobehavioral intervention may add to the efficacy of postoperative risk reduction programs and rehabilitation protocols in cardiac surgery patients.

  13. A MATLAB toolbox for correcting within-individual effects of respiration rate and tidal volume on respiratory sinus arrhythmia during variable breathing.

    Science.gov (United States)

    Schulz, Stefan M; Ayala, Erica; Dahme, Bernhard; Ritz, Thomas

    2009-11-01

    Respiratory sinus arrhythmia (RSA) is a common estimator of vagal outflow to the heart, dependent on parasympathetic activity. During variable breathing, both respiration rate and tidal volume contribute substantially to within-individual RSA variance. A respiratory control method allows for within-individual correction of the time-domain index of RSA. rsaToolbox is a set of MATLAB programs for scoring respiration-corrected RSA using measurements of cardiac interbeat intervals, respiratory-cycle times, and tidal volumes, recorded at different paced-breathing frequencies. The within-individual regression of RSA divided by tidal volume upon total respiratory cycle time is then used to estimate the baseline vagal tone for each breath of a given total respiratory-cycle time. During a subsequent analysis, the difference between the observed RSA (divided by the tidal volume at each breath) and the RSA divided by the tidal volume that was predicted by the baseline equation serves as an estimate of changes in vagal tone. rsaToolbox includes a graphical user interface for intuitive handling. Modular implementation of the algorithm also allows for flexible integration within other analytic strategies or for batch processing.

  14. About Arrhythmia

    Science.gov (United States)

    ... Artery Disease Venous Thromboembolism Aortic Aneurysm More About Arrhythmia Updated:Oct 26,2016 The term "arrhythmia" refers ... damaged. View an animation of arrhythmia . Types of Arrhythmias Atrial Fibrillation = upper heart chambers contract irregularly Bradycardia = ...

  15. [Arrhythmia and sport].

    Science.gov (United States)

    Saoudi, N; Yaici, K; Zarkane, N; Darmon, J P; Rinaldi, J P; Brunner, P; Ricard, P; Mourou, M Y

    2005-12-01

    Sports arrhythmia has gained wide attention with the mediatization of the death of famous sports stars. Sport strongly modifies the structure of the heart with the development of left ventricular hypertrophy which may be difficult to differentiate from that due to doping. Intense training modifies also the resting electrocardiogram with appearance of signs of left ventricular hypertrophy whereas resting sinus bradycardia and atrioventricular conduction disturbances usually reverts upon exertion. Accordingly, arrhythmia may develop ranging from extrasystoles to atrial fibrillation and even sudden death. Recent data suggest that if benign arrhythmia may be the result of the sole intense training and are reversible, malignant ventricular arrhythmia and sudden death mostly occur in unknown structural heart disease. Hypertrophic cardiomyopathy is amongst the most frequent post mortem diagnosis in this situation. Doping is now present in many sports and further threatens the athlete in the safe practice of sport.

  16. [Maternal arrhythmias during pregnancy. Practical review].

    Science.gov (United States)

    Kornacewicz-Jach, Zdzisława; Peregud-Pogorzelska, Małgorzata

    2014-01-01

    Pregnancy is accompanied by a variety of cardiovascular changes in normal women, and these changes can increased incidence of maternal cardiac arrhythmias. Supraventricular and ventricular arrhythmias reguiring treatment are rarely seen during pregnancy in healthy women. Structural cardiac defects or residual defects after repair may contribute to the occurrence of clinically relevant arrhythmias. Arrhythmias during pregnancy include a wide spectrum. The most common are simple ventricular and atrial ectopy, sinusal tachycardia and supraventricular tachycardia. The foetus may suffer both haemodynamic alternations and adverse effects of the treatment (teratogenic risk, foetal growth and development). The management of arrhythmias in pregnant women is similar to that taken in patients who are not pregnant.

  17. Radiofrequency catheter ablation of ventricular arrhythmia arising from the left aortic sinus of Valsalva%Valsalva窦内起源室性心律失常的射频消融

    Institute of Scientific and Technical Information of China (English)

    鲍中华; 郭俊芳; 张国辉; 真亚; 李卫东; 孙琴芳; 张凤琴

    2009-01-01

    Objective To investigate the electrocardiographic characteristics and assess the efficiency of ra-diofrequency catheter ablation(RFCA) in ventricular arrhythmia arising from the aortic sinus of Valsalva. Methods Eighteen patients(6 males and 12 females)were selected to undergo RFCA for ventficular arrhythmia originating from the left aortic sinus of Valsava. All of them were symptomatic,but without evidence of structural heart disease. Activation mapping was performed in the endocardium of the aortic sinus of Valsalva,then ablation was performed at the site with the earliest ventricular wave in endocardium electrograms. At the same time, coronary and aortic angiog-raphy were performed to assess the anatomic relationship between the ventricular tachycardia (VT)/ventricular pre-mature contraction (VPC) origin and coronary arteries and aortic valve before the RF energy delivery. Results Eighteen patients were successfully managed, with no major complications related to the procedure. VT eliminated and VPC counts on 24-hour ECG monitoring decreased significantly after the ablation[18 474(12 399,26 812)/24h vs 4 (1,7)/24 h, Wilcoxon signed-rank test, P<0.05]. During a follow-up period of 6 monthes, there was no recur-rence. Conclusions Ventricular arrhythmia arising from the aortic sinus of Valsalva has specific electrocardiograph-ic characteristics, and it can be successfully and safely treated under the guidance of activation mapping.%目的 评价主动脉Valsalva窦内起源室性心律失常的心电生理特征和射频消融疗效.方法 18例起源于主动脉Valsalva窦内频发室性期前收缩或室性心动过速患者,其中男6例,女12例,均伴有明显的症状,但排除器质性心脏病.采用Valsalva窦内激动标测法,在局部心内电图室波最早处放电消融,同时行冠状动脉造影以评价室性心律失常起源点与冠状动脉开口以及主动脉瓣的解剖学关系.结果 18例患者均消融成功,无严重并发症发生.

  18. Estresse ortostático ativo e arritmia sinusal respiratória em chagásicos com função sistólica global do ventrículo esquerdo preservada Active orthostatic stress and respiratory sinus arrhythmia in patients with Chagas' disease with preserved left ventricular global systolic function

    Directory of Open Access Journals (Sweden)

    Antonio Luiz P. Ribeiro

    2004-07-01

    Full Text Available OBJETIVO: Avaliar a utilização do teste de estresse ostostático ativo na detecção de disfunção vagal em chagásicos com função sistólica global preservada, comparando-o ao teste da arritmia sinusal respiratória. MÉTODO: Foram selecionados 61 chagásicos (Ch e 38 não-chagásicos (NCh sem evidências significativas de cardiopatia ou doenças sistêmicas, submetidos ao ecodopplercardiograma e às provas autonômicas. O teste da arritmia sinusal respiratória foi realizado através do registro eletrocardiográfico enquanto o paciente respirava profundamente, a 6 irpm, calculando-se a razão E:I (média das razões entre os maiores intervalos RR expiratórios e os menores RR inspiratórios a cada ciclo. O eletrocardiograma foi registrado enquanto o paciente se levantava e nos 30s seguintes (teste do estresse ortostático ativo, calculando-se a razão RR máx./RR min (maior e menor intervalo RR logo após a mudança postural. Os índices foram ajustados para covariáveis significativas. RESULTADOS: A razão RR max:min (NCh: 1,52 [1,44-1,74] x Ch: 1,43 [1,33-1,51], p OBJECTIVE: To assess the use of the active orthostatic stress test for detecting vagal dysfunction in patients with Chagas' disease with preserved overall systolic function, and to compare it with the respiratory sinus arrhythmia test. METHODS: Sixty-one chagasic patients (Ch and 38 nonchagasic (NCh patients with no significant evidence of heart disease or systemic diseases underwent Doppler echocardiography and autonomic function tests. The respiratory sinus arrhythmia test was performed through electrocardiographic recording during deep breathing, at 6 ripm, calculating the E:I ratio (mean ratio between the longest expiratory RR interval and the shortest inspiratory RR interval at each cycle. The electrocardiogram was recorded during the act of standing and during the following 30 seconds (active orthostatic stress test, and the max RR/min RR ratio (the longest and shortest

  19. Cardiac arrhythmias

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    2008407 Effects of sympathetic nerve stimulation on connexin43 and ventricular arrhythmias during acute myocardial ischemia: experiment with rats. HU Xiaorong(胡笑容), et al. Dept Cardiol, Renmin Hosp, Wuhan Univ, Wuhan 430060. Natl Med J China 2008;88(24):1707-1710. Objective To investigate the effects of sympathetic nerve stimulation (SNS) on connexin43 (Cx43) and ventricular arrhythmias during acute myocardial ischemia (MI).

  20. Why Arrhythmia Matters

    Science.gov (United States)

    ... Artery Disease Venous Thromboembolism Aortic Aneurysm More Why Arrhythmia Matters Updated:Dec 21,2016 When the heart's ... fibrillation. This content was last reviewed September 2016. Arrhythmia • Home • About Arrhythmia • Why Arrhythmia Matters • Understand Your ...

  1. Treating Arrhythmias in Children

    Science.gov (United States)

    ... Artery Disease Venous Thromboembolism Aortic Aneurysm More Treating Arrhythmias in Children Updated:Dec 21,2016 Many options ... card This content was last reviewed September 2016. Arrhythmia • Home • About Arrhythmia • Why Arrhythmia Matters • Understand Your ...

  2. Children and Arrhythmia

    Science.gov (United States)

    ... Disease Venous Thromboembolism Aortic Aneurysm More Children and Arrhythmia Updated:Dec 21,2016 If your child has ... options This content was last reviewed September 2016. Arrhythmia • Home • About Arrhythmia • Why Arrhythmia Matters • Understand Your ...

  3. Common Tests for Arrhythmia

    Science.gov (United States)

    ... Venous Thromboembolism Aortic Aneurysm More Common Tests for Arrhythmia Updated:Dec 21,2016 Several tests can help ... View an animation of arrhythmia . Common Tests for Arrhythmia Holter monitor (continuous ambulatory electrocardiographic monitor) Suspected arrhythmias ...

  4. Sinus Surgery

    Science.gov (United States)

    ... the surgical strategy was to remove all sinus mucosa from the major sinuses. The use of an ... improved drainage system is achieved, the diseased sinus mucosa has an opportunity to return to normal. FESS ...

  5. Sinus Anatomy

    Science.gov (United States)

    ... Caregivers Contact ARS HOME ANATOMY Nasal Anatomy Sinus Anatomy Nasal Physiology Nasal Endoscopy Skull Base Anatomy Virtual Anatomy Disclosure ... Size + - Home > ANATOMY > Sinus Anatomy Nasal Anatomy Sinus Anatomy Nasal Physiology Nasal Endoscopy Skull Base Anatomy Virtual Anatomy Disclosure ...

  6. How Are Arrhythmias Treated?

    Science.gov (United States)

    ... page from the NHLBI on Twitter. How Are Arrhythmias Treated? Common arrhythmia treatments include medicines, medical procedures, and surgery. Your doctor may recommend treatment if your arrhythmia causes serious symptoms, such as dizziness, chest pain, ...

  7. Living with an Arrhythmia

    Science.gov (United States)

    ... from the NHLBI on Twitter. Living With an Arrhythmia Many arrhythmias are harmless. It's common to have an occasional ... heartbeat or mild palpitations . People who have harmless arrhythmias can live healthy lives. They usually don't ...

  8. How Are Arrhythmias Diagnosed?

    Science.gov (United States)

    ... page from the NHLBI on Twitter. How Are Arrhythmias Diagnosed? Arrhythmias can be hard to diagnose, especially the types ... symptoms every once in a while. Doctors diagnose arrhythmias based on medical and family histories, a physical ...

  9. Sick sinus syndrome: a review.

    Science.gov (United States)

    Semelka, Michael; Gera, Jerome; Usman, Saif

    2013-05-15

    Sick sinus syndrome refers to a collection of disorders marked by the heart's inability to perform its pacemaking function. Predominantly affecting older adults, sick sinus syndrome comprises various arrhythmias, including bradyarrhythmias with or without accompanying tachyarrhythmias. At least 50 percent of patients with sick sinus syndrome develop alternating bradycardia and tachycardia, also known as tachy-brady syndrome. Sick sinus syndrome results from intrinsic causes, or may be exacerbated or mimicked by extrinsic factors. Intrinsic causes include degenerative fibrosis, ion channel dysfunction, and remodeling of the sinoatrial node. Extrinsic factors can be pharmacologic, metabolic, or autonomic. Signs and symptoms are often subtle early on and become more obvious as the disease progresses. They are commonly related to end-organ hypoperfusion. Cerebral hypoperfusion is most common, with syncope or near-fainting occurring in about one-half of patients. Diagnosis may be challenging, and is ultimately made by electrocardiographic identification of the arrhythmia in conjunction with the presence of symptoms. If electrocardiography does not yield a diagnosis, inpatient telemetry monitoring, outpatient Holter monitoring, event monitoring, or loop monitoring may be used. Electrophysiologic studies also may be used but are not routinely needed. Treatment of sick sinus syndrome includes removing extrinsic factors, when possible, and pacemaker placement. Pacemakers do not reduce mortality, but they can decrease symptoms and improve quality of life.

  10. The anatomic and electrophysiological characters of the coronary sinus

    Institute of Scientific and Technical Information of China (English)

    TANG Kai; MA Jian; ZHANG Shu

    2005-01-01

    @@ With the development of the technology of electrophysiological study and radiofrequency catheter ablation, electrophysiologists realized that the coronary sinus (CS) was involved in several types of arrhythmias due to its special anatomic and histological characteristics. In this article we review the anatomy, histology and electrophysiology of the CS and the relation between the CS and selected types of arrhythmias.

  11. 小儿左主动脉窦起源的室性心律失常心电生理特点和射频消融治疗%Electrophysiological characteristics and radiofrequency catheter ablation of ventricular arrhythmia originating from the left coronary aortic sinus in children

    Institute of Scientific and Technical Information of China (English)

    林利; 高路; 崔烺; 于霞; 马洪山; 袁越

    2014-01-01

    目的 报道7例左主动脉窦(LCAS)起源的室性心律失常患儿的心电生理特征和射频导管消融(RFCA)疗效.评价体表心电图对鉴别LCAS及右心室流出道(RVOT)起源的室性心律失常的价值.方法 分析2006年1月至2013年5月在首都医科大学附属北京儿童医院心脏中心内科17例无器质性心脏病的室性心律失常患儿体表心电图(ECG)和动态心电图室性早搏(室早)或室性心动过速(室速)的形态特点.其中7例LCAS来源,10例RVOT来源.结果 两组室性心律失常在Ⅱ、Ⅲ、aVF导联均为高大R波.LCAS组移行在V1、V2导联(85.7%).RVOT组多在V3导联以后(90%).RVOT组的R波时限指数及R/S波幅指数小于LCAS组(0.50±0.14对0.74±0.13,P<0.01;0.32±0.21对3.25±2.45,P<0.01),差异有统计学意义.LCAS组7例中,6例治愈,1例复发.结论 特异性的心电图表现有利于明确LCAS的病灶来源.RFCA治疗LCAS起源的室性心律失常疗效显著.%Objective This study sought to evaluate the electrocardiogram (ECG) characteristics on differentiating ventricular arrhythmia originating from the left coronary aortic sinus (LCAS) and from right ventricular outflow tract (RVOT) and to assess the results of radiofrequency catheter ablation (RFCA) of ventricular arrhythmia from the LCAS.Methods Twelve-lead and Holter ECG analysis,electrophysiological study and RFCA were performed in 17 pediatric patients with ventricular arrhythmia without organic heart disease,including originating from LCAS in 7 patients and originating from RVOT in 10 patients.Results When arrhythmia originating from LCAS,the surface ECG revealed tall R wave on lead Ⅱ,Ⅲ and aVF.Precordial R wave transition occurred on lead V1,V2.For arrhythmia originating from RVOT,the surface ECG had same characteristics on lead Ⅱ,Ⅲ and aVF.Precordial R wave transition occurred ≥ lead V3 during arrhythmia.The index of R wave duration and R/S amplitude on lead V1 and V2 in RVOT group were

  12. New theory of arrhythmia. Conceptual substantiation of arrhythmia mechanisms

    Directory of Open Access Journals (Sweden)

    Vladimir I. Ermoshkin

    2015-11-01

    Full Text Available Aims A new attempt is made to substantiate the concept of the mechanism of arrhythmia and sudden cardiac death. Methods The paper is based on a theoretical analysis of special literature, personal experience of participation in conferences and discussions with leading Russian cardiologists. Results We have succeeded in demonstrating the fact that researchers ignore the fact that cardiomyocytes can be excited by mechanical pulses, when considering the arrhythmia mechanisms. We have conducted trials using the Cardiocode device. Under stress in a human, opened may be large and small arteriovenous anastomoses, via which blood under high pressure is ejected into veins. It leads to pressure surges in arteries and veins. The vena cava dilates, its tonus increases. In some cases, the pulse waves travel via anastomoses along the vena cava walls to the atria and the ventricles. An above-threshold concentration of tensions from mechanical pulses may excite cardiomyocytes from different points of the myocardium, disturbing the sinus rhythm. As a result, extrasystoles, tachycardia attacks, blocking of blood circulation in the peripheral segments of the venous arterial networks, edemata, thrombosis and metabolism disorders appear. Arrhythmia, tachycardia attacks and concomitant myocardial ischemia lead to progression of heart fibrosis. Such changes increase the probability of fibrillations and sudden cardiac death. Conclusion Unhealthy lifestyle, the presence of opening and not properly closing anastomoses may provoke a number of diseases. To avoid the cardiac arrhythmia attacks and prevent SCD, it is necessary to suppress travel of the mechanical waves within the following circuitry: aorta – artery – anastomosis – vein – vena cava – atria – ventricles. The travel of the mechanical waves within the same vessel circuitry explains the fact that the fixed couplings under extrasystoles are observed, and the beat-to-beat RR intervals under tachycardia

  13. Cardiac arrhythmias in pregnancy.

    Science.gov (United States)

    Knotts, Robert J; Garan, Hasan

    2014-08-01

    As more women with repaired congenital heart disease survive to their reproductive years and many other women are delaying pregnancy until later in life, a rising concern is the risk of cardiac arrhythmias during pregnancy. Naturally occurring cardiovascular changes during pregnancy increase the likelihood that a recurrence of a previously experienced cardiac arrhythmia or a de novo arrhythmia will occur. Arrhythmias should be thoroughly investigated to determine if there is a reversible etiology, and risks/benefits of treatment options should be fully explored. We discuss the approach to working up and treating various arrhythmias during pregnancy with attention to fetal and maternal risks as well as treatment of fetal arrhythmias. Acute management in stable patients includes close monitoring and intravenous pharmacologic therapy, while DC cardioversion should be used to terminate arrhythmias in hemodynamically unstable patients. Long-term management may require continued oral antiarrhythmic therapy, with particular attention to fetal safety, to prevent complications associated with arrhythmias.

  14. Sinus Tumors

    Science.gov (United States)

    ... scan of a patient with a sinus cancer (esthesioneuroblastoma) on the patient's right side (left side of ... mucoepidermoid carcinoma, melanoma, olfactory neuroblastoma (also known as esthesioneuroblastoma), sarcoma, and lymphoma. Malignant lesions from other body ...

  15. Normal Sinus Rhythm-Sinus Bradycardia is Common in Young Children Post-extracardiac Fontan.

    Science.gov (United States)

    Evans, William N; Acherman, Ruben J; Restrepo, Humberto

    2016-10-01

    We hypothesized that normal sinus rhythm-sinus bradycardia is common in young children following extracardiac Fontan. After excluding patients with sinus pauses, junctional rhythm, tachy-brady syndrome, frequent ectopics, or ectopic atrial rhythm, we found an ambulatory 24-h Holter monitor average heart rate of 78 ± 12 beats per minute (bpm) in 33 post-extracardiac Fontan children with a median age of 6 years (5-10). A 24-h average heart rate of 78 ± 12 bpm is statistically significantly lower than a 24-h average heart rate value of 90 ± 10 bpm derived from a similarly aged control population (p < 0.01). We conclude that after excluding those with significant arrhythmias, normal sinus rhythm-sinus bradycardia is common in children post-extracardiac Fontan.

  16. Arrhythmias in peripartum cardiomyopathy.

    Science.gov (United States)

    Honigberg, Michael C; Givertz, Michael M

    2015-06-01

    Peripartum cardiomyopathy (PPCM) is a complication of late pregnancy and the early postpartum period characterized by dilated cardiomyopathy and heart failure with reduced ejection fraction. Approximately half of women fail to recover left ventricular function. Standard management of heart failure is indicated, with some exceptions for women who are predelivery or breastfeeding. Atrial and ventricular arrhythmias are reported in PPCM, but the frequency of arrhythmias in this condition is not well characterized. Management of PPCM-associated arrhythmias may include antiarrhythmic drugs, catheter ablation, and wearable or implantable cardioverter-defibrillators. Further research is needed on the prevalence, natural history, and optimal management of arrhythmias in PPCM.

  17. Devices for Arrhythmia

    Science.gov (United States)

    ... High Blood Pressure Know Your Numbers Understand Symptoms & Risks ... In a medical emergency, life-threatening arrhythmias may be stopped by giving the heart an electric shock (as with a defibrillator ). For people with ...

  18. Arrhythmias (For Parents)

    Science.gov (United States)

    ... Child If Your Child Has a Heart Defect Coarctation of the Aorta Cardiac Catheterization Mitral Valve Prolapse ... Atrial Septal Defect Arrhythmias Cardiac Catheterization EKG (Video) Coarctation of the Aorta Atrial Septal Defect Ventricular Septal ...

  19. Types of Arrhythmia

    Science.gov (United States)

    ... for children who have arrhythmias include medicines, defibrillation (electric shock), surgically implanted devices that control the heartbeat, and other procedures that fix abnormal electrical signals in the heart. Rate This Content: NEXT >> Updated: ...

  20. Sports and arrhythmias.

    Science.gov (United States)

    Giada, F; Conte, R; Pescatore, V; Brugin, E

    2011-06-01

    Rhythm disorders represent the main challenge for the sport physician and cardiologist to grant the certificate of sports eligibility to the athletes. Arrhythmias that occur in athletes can be divided into two types. The most common are generally an expression of morphofunctional changes in the athlete's heart and are represented by certain forms of non-complex tachyarrhythmias and bradyarrhythmias. On the other hand you may encounter less frequently more complex arrhythmias that may be an epiphenomenon of cardiomyopathy can cause sudden death during sports activities. By collection of detailed medical history, careful examination, and in particular by the 12-lead electrocardiogram is already possible to understand the arrhythmic risk sporting population. After an analysis of main types of arrhythmias encountered in the athlete and the main diagnostic methods, this study focuses on the interplay between forms of arrhythmias, arrhythmogenic heart diseases and activity sports. Surely the increased adrenergic tone and anatomical and functional alterations sports-related favor the development of arrhythmia and sudden death risk in structural cardiomyopathies. But this is not yet resolved the question of whether sport is able to increase the incidence of ventricular arrhythmias in a normal heart. Dangerousness of the arrhythmia is variable depending on the sport is practiced with high intensity or not. Even if it is important considering the possibility of syncope in hazardous environments. Arrhythmias at risk impose the exclusion of the athlete from the practice of sport. In some cases it may be considered a drug treatment, ablation, and in rare and selected cases, the implantation of a pacemaker or an implantable defibrillator.

  1. Sick sinus syndrome in a patient with extensive cardiac lipomatosis (sinus node dysfunction in lipomatosis).

    Science.gov (United States)

    Kadmon, Ehud; Paz, Rami; Kusniec, Jairo; Strasberg, Boris

    2010-04-01

    We present a case of a 45-year-old man with an incidental and longstanding diagnosis of extensive mediastinal and cardiac lipomatosis. Along the years, he had experienced various arrhythmias, mainly bradyarrhythmias, mostly asymptomatic. Recently after documenting a sinus pause of 6 seconds and runs of nonsustained ventricular tachycardias, he underwent an implantation of a cardioverter-defibrillator. There are many reports of cardiac lipomatosis in the literature, including reports of related ventricular arrhythmias, some of which are fatal. (PACE 2010; 513-515).

  2. Cardiac arrhythmias in recently diagnosed hypertensive patients at first presentation: an electrocardiographic-based study.

    Science.gov (United States)

    Ejim, E C; Ike, S O; Anisiuba, B C; Essien, I O; Onwubere, B J; Ikeh, V O

    2012-01-01

    Various forms of cardiac arrhythmias have been documented in hypertensive subjects, and hypertension is an important risk factor for the development of atrial and ventricular arrhythmias and sudden death. Electrocardiography at rest easily documents significant arrhythmias in patients, and this study was carried out to determine the types and frequency of arrhythmias in hypertensive subjects at first presentation in the Hypertension Clinics of the University of Nigeria Teaching Hospital (UNTH) Enugu, Nigeria. The study was hospitalbased and retrospective in nature. The resting 12lead ECG reports of 346 consecutive hypertensive subjects seen at the Hypertension clinics of the UNTH Enugu over a 14 month period were retrieved from the case files and studied. Other information obtained from the case files included the age and gender of the subjects. The mean age of the subjects was 57.3 years. Ninety-five of the subjects had arrhythmias representing 27% of the study population, out of which fifty-five were males (57.9%) and forty were females (42.1%). However 26.9% of all the male subjects had arrhythmias while 28.2% of all the females had arrhythmias. Multiple ventricular ectopics, sinus tachycardia, sinus bradycardia and atrial fibrillation were the most prevalent arrhythmias. This study showed that a significant proportion of hypertensive subjects present initially with significant rhythm disturbances.

  3. Chronic sinusitis (image)

    Science.gov (United States)

    ... and cartilage and lined with a mucous membrane. Sinusitis occurs when the membranes becomes inflamed and painful, ... a result of a blocked sinus opening. Chronic sinusitis is often caused by inflammation and blockage due ...

  4. Computed Tomography (CT) -- Sinuses

    Science.gov (United States)

    ... News Physician Resources Professions Site Index A-Z Computed Tomography (CT) - Sinuses Computed tomography (CT) of the ... of CT of the Sinuses? What is CT (Computed Tomography) of the Sinuses? Computed tomography, more commonly ...

  5. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... the Sinuses? What is CT (Computed Tomography) of the Sinuses? Computed tomography, more commonly known as a ... of page What are some common uses of the procedure? CT of the sinuses is primarily used ...

  6. Ventricular Assist Device Support: for Management of Sustained Ventricular Arrhythmias

    OpenAIRE

    2002-01-01

    We describe herein the cases of 2 patients who had ventricular arrhythmias. In one, a short-term biventricular assist device, the ABIOMED BVS 5000, was placed because the patient had sustained ventricular tachycardia and could not be weaned from cardiopulmonary bypass. Excellent hemodynamic support was maintained for several days while the antiarrhythmic therapy was maximized. Sinus rhythm was restored, and the patient was successfully weaned from the ventricular assist device. However, the s...

  7. Categories of Arrhythmias

    Science.gov (United States)

    ... Kawasaki Disease Long Q-T Syndrome Marfan Syndrome Metabolic Syndrome Mitral Valve Prolapse Myocardial Bridge Myocarditis Obstructive Sleep Apnea Pericarditis Peripheral Vascular Disease Rheumatic Fever Sick Sinus Syndrome Silent Ischemia Stroke Sudden ...

  8. Computers and clinical arrhythmias.

    Science.gov (United States)

    Knoebel, S B; Lovelace, D E

    1983-02-01

    Cardiac arrhythmias are ubiquitous in normal and abnormal hearts. These disorders may be life-threatening or benign, symptomatic or unrecognized. Arrhythmias may be the precursor of sudden death, a cause or effect of cardiac failure, a clinical reflection of acute or chronic disorders, or a manifestation of extracardiac conditions. Progress is being made toward unraveling the diagnostic and therapeutic problems involved in arrhythmogenesis. Many of the advances would not be possible, however, without the availability of computer technology. To preserve the proper balance and purposeful progression of computer usage, engineers and physicians have been exhorted not to work independently in this field. Both should learn some of the other's trade. The two disciplines need to come together to solve important problems with computers in cardiology. The intent of this article was to acquaint the practicing cardiologist with some of the extant and envisioned computer applications and some of the problems with both. We conclude that computer-based database management systems are necessary for sorting out the clinical factors of relevance for arrhythmogenesis, but computer database management systems are beset with problems that will require sophisticated solutions. The technology for detecting arrhythmias on routine electrocardiograms is quite good but human over-reading is still required, and the rationale for computer application in this setting is questionable. Systems for qualitative, continuous monitoring and review of extended time ECG recordings are adequate with proper noise rejection algorithms and editing capabilities. The systems are limited presently for clinical application to the recognition of ectopic rhythms and significant pauses. Attention should now be turned to the clinical goals for detection and quantification of arrhythmias. We should be asking the following questions: How quantitative do systems need to be? Are computers required for the detection of

  9. [Arrhythmias from swallowing].

    Science.gov (United States)

    Palazzuoli, V; Mondillo, S; Faglia, S; D'Aprile, N; De Luca, G; Kristodhullu, A; Corba, E

    1992-01-01

    We describe the case of a 51-year old, non cardiopathic patient, with recurrent attacks of supraventricular tachycardia induced by swallowing. In the existing literature we found several descriptions of hypokinetic arrhythmias, easily explained by a mechanism of vagal inhibition. The cases of predominantly hyperkinetic arrhythmias, however, are much less common. In these patients the origin of the disease seems to be due to sympathetic oesophageal fibers and superior and medium cardiac nerves. In the present case, as in the others reported in the literature, the drug of choice seems to be Amiodarone which appears to be the most effective in preventing tachyarrhythmias caused by swallowing.

  10. Transforming Growth Factor-β1 T869C Gene Polymorphism Is Associated with Acquired Sick Sinus Syndrome via Linking a Higher Serum Protein Level

    OpenAIRE

    Chen, Jan-Yow; Liu, Jiung-Hsiun; Wu, Hong-Dar Isaac; Lin, Kuo-Hung; Chang, Kuan-Cheng; Liou, Ying-Ming

    2016-01-01

    Background Familial sick sinus syndrome is associated with gene mutations and dysfunction of ion channels. In contrast, degenerative fibrosis of the sinus node tissue plays an important role in the pathogenesis of acquired sick sinus syndrome. There is a close relationship between transforming growth factor-β1 mediated cardiac fibrosis and acquired arrhythmia. It is of interest to examine whether transforming growth factor-β1 is involved in the pathogenesis of acquired sick sinus syndrome. Me...

  11. Behavioral influences on cardiac arrhythmias.

    Science.gov (United States)

    Lampert, Rachel

    2016-01-01

    Stress can trigger both ventricular and atrial arrhythmias, as evidenced by epidemiological, clinical, and laboratory studies, through its impact on autonomic activity. Chronic stress also increases vulnerability to arrhythmias. Novel therapies aimed at decreasing the psychological and physiological response to stress may decrease arrhythmia frequency and improve quality of life.

  12. Fibrosis and Cardiac Arrhythmias

    NARCIS (Netherlands)

    de Jong, Sanne; van Veen, Toon A. B.; van Rijen, Harold V. M.; de Bakker, Jacques M. T.

    2011-01-01

    In this review article about fibrosis and arrhythmias, we show that the amount of collagen, a normal element of the heart muscle, increases with age and in heart disease. The relation between fibrosis and electrophysiological parameters such as conduction, fractionation of electrograms, abnormal imp

  13. Ventricular assist device support for management of sustained ventricular arrhythmias.

    Science.gov (United States)

    Fasseas, Panayotis; Kutalek, Steven P; Samuels, Fania L; Holmes, Elena C; Samuels, Louis E

    2002-01-01

    We describe herein the cases of 2 patients who had ventricular arrhythmias. In one, a short-term biventricular assist device, the ABIOMED BVS 5000, was placed because the patient had sustained ventricular tachycardia and could not be weaned from cardiopulmonary bypass. Excellent hemodynamic support was maintained for several days while the antiarrhythmic therapy was maximized. Sinus rhythm was restored, and the patient was successfully weaned from the ventricular assist device. However, the substrate for the arrhythmia persisted, and a recurrence, 1 week later, resulted in the patient's death. In the 2nd patient, the use of an implantable left ventricular assist device was successful in temporarily alleviating the ventricular tachycardia associated with ischemic cardiomyopathy. However, after 2 days of device assistance, the patient experienced a recurrence of the tachycardia, which degenerated into ventricular fibrillation with a marked deterioration in the patient's hemodynamics. The arrhythmia persisted despite multiple attempts at external cardioversion, and internal cardioversion and placement of an automatic implantable cardioverter-defibrillator were necessary. This treatment, along with repeated boluses of amiodarone, led to successful suppression of the arrhythmias, and the patient eventually underwent transplantation. The mechanical hemodynamic support of the circulation by ventricular assist devices was effective in supporting these 2 patients who had sustained ventricular arrhythmias.

  14. Three-dimensional Transesophageal Echocardiography-guided Transcathetar Closure of Ruptured Noncoronary Sinus of Valsalva Aneurysm

    Science.gov (United States)

    Kumar, G Anil; Parimala, P S; Jayaranganath, M; Jagadeesh, A M

    2017-01-01

    Sinus of Valsalva aneurysm accounts for only 1% of congenital cardiac anomalies. Sinus of Valsalva aneurysm can cause aortic insufficiency, coronary artery flow compromise, cardiac arrhythmia, or aneurysm rupture. Three-dimensional transesophageal echocardiography (3DTEE) represents an adjunctive tool to demonstrate the ruptured sinus of Valsalva with better delineation. We present an adult patient with rupture of noncoronary sinus of Valsalva aneurysm into the right atrium (RA). 3DTEE accurately delineated the site of rupture into the RA and showed the exact size and shape of the defect, which helped in the successful transcatheter closure of the defect with a duct occluder device. PMID:28074828

  15. The influence of motor activity on the development of cardiac arrhythmias during experimental emotional stress

    Science.gov (United States)

    Ulyaninskiy, L. S.; Urmancheyeva, T. G.; Stepanyan, Y. P.; Fufacheva, A. A.; Gritsak, A. V.; Kuznetsova, B. A.; Kvitka, A. A.

    1982-01-01

    Experimental emotional stress which can produce various disorders of cardiac rhythm: sinus tachycardia, atrial fibrillation, ventricular, extrasystoles and paroxysmal ventricular tachysystoles was studied. In these conditions the adrenalin content in the blood and myocardium is increased 3 to 4 times. It is found that moderate motor activity leads to a relative decrease of adrenalin in the myocardium and arrest of cardiac arrhythmias.

  16. Simulation of Cardiac Arrhythmias Using a 2D Heterogeneous Whole Heart Model.

    Science.gov (United States)

    Balakrishnan, Minimol; Chakravarthy, V Srinivasa; Guhathakurta, Soma

    2015-01-01

    Simulation studies of cardiac arrhythmias at the whole heart level with electrocardiogram (ECG) gives an understanding of how the underlying cell and tissue level changes manifest as rhythm disturbances in the ECG. We present a 2D whole heart model (WHM2D) which can accommodate variations at the cellular level and can generate the ECG waveform. It is shown that, by varying cellular-level parameters like the gap junction conductance (GJC), excitability, action potential duration (APD) and frequency of oscillations of the auto-rhythmic cell in WHM2D a large variety of cardiac arrhythmias can be generated including sinus tachycardia, sinus bradycardia, sinus arrhythmia, sinus pause, junctional rhythm, Wolf Parkinson White syndrome and all types of AV conduction blocks. WHM2D includes key components of the electrical conduction system of the heart like the SA (Sino atrial) node cells, fast conducting intranodal pathways, slow conducting atriovenctricular (AV) node, bundle of His cells, Purkinje network, atrial, and ventricular myocardial cells. SA nodal cells, AV nodal cells, bundle of His cells, and Purkinje cells are represented by the Fitzhugh-Nagumo (FN) model which is a reduced model of the Hodgkin-Huxley neuron model. The atrial and ventricular myocardial cells are modeled by the Aliev-Panfilov (AP) two-variable model proposed for cardiac excitation. WHM2D can prove to be a valuable clinical tool for understanding cardiac arrhythmias.

  17. [Psychosomatic aspects of cardiac arrhythmias].

    Science.gov (United States)

    Siepmann, Martin; Kirch, Wilhelm

    2010-07-01

    Emotional stress facilitates the occurrence of cardiac arrhythmias including sudden cardiac death. The prevalence of anxiety and depression is increased in cardiac patients as compared to the normal population. The risk of cardiovascular mortality is enhanced in patients suffering from depression. Comorbid anxiety disorders worsen the course of cardiac arrhythmias. Disturbance of neurocardiac regulation with predominance of the sympathetic tone is hypothesized to be causative for this. The emotional reaction to cardiac arrhythmias is differing to a large extent between individuals. Emotional stress may result from coping with treatment of cardiac arrhythmias. Emotional stress and cardiac arrhythmias may influence each other in the sense of a vicious circle. Somatoform cardiac arrhythmias are predominantly of psychogenic origin. Instrumental measures and frequent contacts between physicians and patients may facilitate disease chronification. The present review is dealing with the multifaceted relationships between cardiac arrhythmias and emotional stress. The underlying mechanisms and corresponding treatment modalities are discussed.

  18. Genetic variation in the inwardly rectifying K channel subunits KCNJ3 (GIRK1) and KCNJ5 (GIRK4) in patients with sinus node dysfunction

    DEFF Research Database (Denmark)

    Holmegard, Haya N; Theilade, Juliane; Benn, Marianne

    2010-01-01

    BACKGROUND: Sinus node dysfunction (SND) is a heterogeneous disorder of unknown etiology characterized by a variety of supraventricular arrhythmias with symptoms of syncope, palpitations, and dizziness. The mechanism underlying the abnormal rhythm is incompletely understood. OBJECTIVE: Because...

  19. Approaching chronic sinusitis.

    Science.gov (United States)

    Sarber, Kathleen M; Dion, Gregory Robert; Weitzel, Erik K; McMains, Kevin C

    2013-11-01

    Chronic sinusitis is a common disease that encompasses a number of syndromes that are characterized by sinonasal mucosal inflammation. Chronic sinusitis can be defined as two or more of the following symptoms lasting for more than 12 consecutive weeks: discolored rhinorrhea, postnasal drip, nasal obstruction, facial pressure or pain, or decreased sense of smell. Chronic sinusitis is further classified as chronic sinusitis with polyposis, chronic sinusitis without polyposis, or allergic fungal sinusitis using physical examination, and histologic and radiographic findings. Treatment methods for chronic sinusitis are based upon categorization of the disease and include oral and inhaled corticosteroids, nasal saline irrigations, and antibiotics in selected patients. Understanding the various forms of chronic sinusitis and managing and ruling out comorbidities are key to successful management of this common disorder.

  20. [Maxillary sinus hypoplasia].

    Science.gov (United States)

    Plaza, G; Ferrando, J; Martel, J; Toledano, A; de los Santos, G

    2001-03-01

    Maxillary sinus hypoplasia is rare, with an estimated prevalence of 1-5%. Out of the CT scans performed in sinusal patients between March 1998 and June 1999, we report on 4 isolated maxillary sinus hypoplasia, 4 maxillary sinus hypoplasia associated to concha bullosa, and 10 isolated conchae bullosas. All cases were evaluated by nasosinusal endoscopy and CT scan. Size, location and uni/bilateral presentation of concha bullosa is correlated to maxillary sinus hypoplasia presence, specially with regards to uncinate process presence, medial or lateral retraction. The pathogenesis of maxillary sinus hypoplasia is reviewed, and its relation to concha bullosa, evaluating how this could explain some cases of the so called chronic maxillary sinus atelectasia, as an acquired and progressive variant of maxillary sinus hypoplasia in adults.

  1. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... is painless, noninvasive and accurate. It’s also the most reliable imaging technique for determining if the sinuses ... CT scan of the sinuses, the patient is most commonly positioned lying flat on the back. The ...

  2. Sick sinus syndrome secondary to primary hyperparathyroidism

    Directory of Open Access Journals (Sweden)

    Osman Beton

    2016-03-01

    Full Text Available The effects of hypercalcemia on the heart and the resulting alternations of the electrocardiogram have been well established. However, there are only limited number of reports in the literature on primary hyperparathyroidism leading to clinically significant arrhythmias. We present a patient who was diagnosed with symptomatic sick sinus syndrome in the setting of moderate hyper-calcemia secondary to primary hyperparathyroidism in this case report. After the surgical opera-tion for primary hyperparathyroidism, serum calcium level returned to normal range and patient’s complaints and arrhytmic findings recovered. The patient was asymptomatic for the following 13 years.

  3. Histoplasma capsulatum sinusitis.

    OpenAIRE

    1997-01-01

    Sinusitis is commonly reported in patients with AIDS. In addition to the usual bacterial pathogens isolated from immunocompetent patients, sinusitis in patients with AIDS may be caused by a variety of unusual bacteria, viruses, fungi, parasites, and mycobacteria. Histoplasma capsulatum has not typically been associated with sinusitis in either group of patients. We report a case of sinusitis caused by H. capsulatum in a patient with AIDS.

  4. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... equipment to evaluate the paranasal sinus cavities – hollow, air-filled spaces within the bones of the face surrounding the ... paranasal sinus cavities. The paranasal sinuses are hollow, air-filled spaces located within the bones of the face and ...

  5. Systems biology and cardiac arrhythmias.

    Science.gov (United States)

    Grace, Andrew A; Roden, Dan M

    2012-10-27

    During the past few years, the development of effective, empirical technologies for treatment of cardiac arrhythmias has exceeded the pace at which detailed knowledge of the underlying biology has accumulated. As a result, although some clinical arrhythmias can be cured with techniques such as catheter ablation, drug treatment and prediction of the risk of sudden death remain fairly primitive. The identification of key candidate genes for monogenic arrhythmia syndromes shows that to bring basic biology to the clinic is a powerful approach. Increasingly sophisticated experimental models and methods of measurement, including stem cell-based models of human cardiac arrhythmias, are being deployed to study how perturbations in several biologic pathways can result in an arrhythmia-prone heart. The biology of arrhythmia is largely quantifiable, which allows for systematic analysis that could transform treatment strategies that are often still empirical into management based on molecular evidence.

  6. Chaos control of cardiac arrhythmias.

    Science.gov (United States)

    Garfinkel, A; Weiss, J N; Ditto, W L; Spano, M L

    1995-01-01

    Chaos theory has shown that many disordered and erratic phenomena are in fact deterministic, and can be understood causally and controlled. The prospect that cardiac arrhythmias might be instances of deterministic chaos is therefore intriguing. We used a recently developed method of chaos control to stabilize a ouabain-induced arrhythmia in rabbit ventricular tissue in vitro. Extension of these results to clinically significant arrhythmias such as fibrillation will require overcoming the additional obstacles of spatiotemporal complexity.

  7. Reduced incidence of cardiac arrhythmias in walkers and runners.

    Directory of Open Access Journals (Sweden)

    Paul T Williams

    Full Text Available PURPOSE: Walking is purported to reduce the risk of atrial fibrillation by 48%, whereas jogging is purported to increase its risk by 53%, suggesting a strong anti-arrhythmic benefit of walking over running. The purpose of these analyses is to compare incident self-reported physician-diagnosed cardiac arrhythmia to baseline energy expenditure (metabolic equivalent hours per day, METhr/d from walking, running and other exercise. METHODS: Proportional hazards analysis of 14,734 walkers and 32,073 runners. RESULTS: There were 1,060 incident cardiac arrhythmias (412 walkers, 648 runners during 6.2 years of follow-up. The risk for incident cardiac arrhythmias declined 4.4% per baseline METhr/d walked by the walkers, or running in the runners (P = 0.0001. Specifically, the risk declined 14.2% (hazard ratio: 0.858 for 1.8 to 3.6 METhr/d, 26.5% for 3.6 to 5.4 METhr/d, and 31.7% for ≥5.4 METhr/d, relative to <1.8 METhr/d. The risk reduction per METhr/d was significantly greater for walking than running (P<0.01, but only because walkers were at 34% greater risk than runners who fell below contemporary physical activity guideline recommendations; otherwise the walkers and runners had similar risks for cardiac arrhythmias. Cardiac arrhythmias were unrelated to walking and running intensity, and unrelated to marathon participation and performance. CONCLUSIONS: The risk for cardiac arrhythmias was similar in walkers and runners who expended comparable METhr/d during structured exercise. We found no significant risk increase for self-reported cardiac arrhythmias associated with running distance, exercise intensity, or marathon participation. Rhythm abnormalities were based on self-report, precluding definitive categorization of the nature of the rhythm disturbance. However, even if the runners' arrhythmias include sinus bradycardia due to running itself, there was no increase in arrhythmias with greater running distance.

  8. The silent sinus syndrome.

    Science.gov (United States)

    Monos, Tova; Levy, Jaime; Lifshitz, Tova; Puterman, Moshe

    2005-05-01

    Patients with silent sinus syndrome typically present for investigation of facial asymmetry. Unilateral, spontaneous enophthalmos and hypoglobus are the prominent findings at examination. Imaging of the orbit and sinuses characteristically show unilateral maxillary sinus opacification and collapse with inferior bowing of the orbital floor. It has been suggested that SSS is due to hypoventilation of the maxillary sinus secondary to ostial obstruction and sinus atelectasis with chronic negative pressure within the sinus. Treatment involves functional endoscopic sinus surgery for reestablishing a functional drainage passage, and a reconstructive procedure of the floor of the orbit for repairing the hypoglobus and cosmetic deformity. Ophthalmologists, otorhinolaryngologists, and radiologists must be familiarized with this relatively newly reported disease.

  9. Who Is at Risk for Arrhythmia?

    Science.gov (United States)

    ... on Twitter. Who Is at Risk for an Arrhythmia? Arrhythmias are very common in older adults. Atrial fibrillation (a common type of arrhythmia that can cause problems) affects millions of people, ...

  10. Ventricular arrhythmias in Chagas disease

    Directory of Open Access Journals (Sweden)

    Marco Paulo Tomaz Barbosa

    2015-02-01

    Full Text Available Sudden death is one of the most characteristic phenomena of Chagas disease, and approximately one-third of infected patients develop life-threatening heart disease, including malignant ventricular arrhythmias. Fibrotic lesions secondary to chronic cardiomyopathy produce arrhythmogenic substrates that lead to the appearance and maintenance of ventricular arrhythmias. The objective of this study is to discuss the main clinical and epidemiological aspects of ventricular arrhythmias in Chagas disease, the specific workups and treatments for these abnormalities, and the breakthroughs needed to determine a more effective approach to these arrhythmias. A literature review was performed via a search of the PubMed database from 1965 to May 31, 2014 for studies of patients with Chagas disease. Clinical management of patients with chronic Chagas disease begins with proper clinical stratification and the identification of individuals at a higher risk of sudden cardiac death. Once a patient develops malignant ventricular arrhythmia, the therapeutic approach aims to prevent the recurrence of arrhythmias and sudden cardiac death by the use of implantable cardioverter defibrillators, antiarrhythmic drugs, or both. In select cases, invasive ablation of the reentrant circuit causing tachycardia may be useful. Ventricular arrhythmias are important manifestations of Chagas cardiomyopathy. This review highlights the absence of high-quality evidence regarding the treatment of ventricular arrhythmias in Chagas disease. Recognizing high-risk patients who require specific therapies, especially invasive procedures such as the implantation of cardioverter defibrillators and ablative approaches, is a major challenge in clinical practice.

  11. MORPHOLOGICAL STUDY OF CORONARY SINUS IN HUMAN CADAVERIC HEARTS

    Directory of Open Access Journals (Sweden)

    R. Manoranjitham

    2015-09-01

    Full Text Available Background: The coronary sinus is a dilated venous channel opening into the right atrium of the heart. The coronary venous system has gained importance in recent years for electrophysiological procedures like arrhythmia ablation, biventricular pacing and implantation of cardiac pacemakers. The present study aims to study the formation and tributaries of coronary sinus and also the morphology of thebesian valve. Materials and Methods: 30 formalin fixed cadaveric hearts available in the department of Anatomy, Dhanalakshmi Srinivasan Medical College and Hospital, Perambalur, Tamil nadu, was used for the study. The formation and tributaries of coronary sinus were noted. The length of coronary sinus in millimeters was measured from the union of great cardiac vein and left marginal vein upto the opening of the coronary sinus in the right atrium with vernier calipers. The width of the coronary ostium in the right atrium was measured in millimeters with vernier calipers. Results: In 93.33% specimens the coronary sinus was formed by the union of great cardiac vein and left marginal vein. In 3.33% specimens it was formed by the union of great cardiac vein and posterior vein of left ventricle, and in 3.33% specimens it was formed by the union of great cardiac vein and oblique vein of left atrium. The left marginal vein was absent in 2 specimens and small cardiac vein was absent in 1 specimen. The mean length of coronary sinus was 54.98 + 12.2mm. The mean width of coronary sinus ostium was 9.35 + 3.24mm. The Thebesian valve was present in 93.33% specimens and it was semilunar in shape. Conclusion: The knowledge of coronary sinus anatomy will be helpful during electrophysiological procedures.

  12. Pilonidal Sinus of the Penis

    Directory of Open Access Journals (Sweden)

    Hugh F. O'Kane

    2004-01-01

    Full Text Available A pilonidal sinus is a subcutaneous sinus containing hair. It is most commonly found in the natal cleft of hirsute men. Here we describe the unusual finding of a pilonidal sinus arising on the male foreskin.

  13. Odontogene sinusitis maxillaris

    NARCIS (Netherlands)

    Weijerman, J.E.

    1972-01-01

    Een oroantrale fistel blijkt in 51,7% der gevallen geleid te hebben tot een chronische en slechts in 29,2% tot een acute sinusitis (tabel 7 blz.72). Een verklaring hiervoor is vermoedelijk de goede drainagemogelijkheid van de sinus doordat het ostium meestal open is en bovendien afvoer van de pus vi

  14. Sinus MRI scan

    Science.gov (United States)

    ... A CT scan may be preferred in emergency cases, since it is faster and often available in the emergency room. Note: MRI is not as effective as CT in defining the anatomy of the sinuses, and therefore is not typically used for suspected acute sinusitis.

  15. Endoscopic Sinus Surgery

    Science.gov (United States)

    ... sinus cavities (cancerous or non-cancerous growths), leaking brain fluid into the nose, tear duct blockage, and others. Additionally, recent advances ... bone at the bottom of the brain and brain itself that are next to the nose and sinuses have been removed via the nostril, ...

  16. Data analysis in cardiac arrhythmias.

    Science.gov (United States)

    Rodrigo, Miguel; Pedrón-Torecilla, Jorge; Hernández, Ismael; Liberos, Alejandro; Climent, Andreu M; Guillem, María S

    2015-01-01

    Cardiac arrhythmias are an increasingly present in developed countries and represent a major health and economic burden. The occurrence of cardiac arrhythmias is closely linked to the electrical function of the heart. Consequently, the analysis of the electrical signal generated by the heart tissue, either recorded invasively or noninvasively, provides valuable information for the study of cardiac arrhythmias. In this chapter, novel cardiac signal analysis techniques that allow the study and diagnosis of cardiac arrhythmias are described, with emphasis on cardiac mapping which allows for spatiotemporal analysis of cardiac signals.Cardiac mapping can serve as a diagnostic tool by recording cardiac signals either in close contact to the heart tissue or noninvasively from the body surface, and allows the identification of cardiac sites responsible of the development or maintenance of arrhythmias. Cardiac mapping can also be used for research in cardiac arrhythmias in order to understand their mechanisms. For this purpose, both synthetic signals generated by computer simulations and animal experimental models allow for more controlled physiological conditions and complete access to the organ.

  17. Cardiac arrhythmias the first month after acute traumatic spinal cord injury

    DEFF Research Database (Denmark)

    Bartholdy, Kim; Biering-Sørensen, Tor; Malmqvist, Lasse

    2014-01-01

    of this prospective observational study was to investigate the occurrence of cardiac arrhythmias and cardiac arrests in patients with acute traumatic SCI. METHODS: As early as possible after SCI 24-hour Holter monitoring was performed. Additional Holter recordings were performed 1, 2, 3, and 4 weeks after SCI....... Furthermore, 12-lead electrocardiograms (ECGs) were obtained shortly after SCI and at 4 weeks. RESULTS: Thirty patients were included. Bradycardia (heart rate (HR) ... both on 12-lead ECGs obtained shortly after SCI (P = 0.030) and at 4 weeks (P = 0.041). CONCLUSION: Many patients with cervical SCI experience arrhythmias such as bradycardia, sinus node arrest, supraventricular tachycardia, and more rarely cardiac arrest the first month after SCI. Apart from sinus...

  18. Mutationer i hjertets pacemakerkanaler--ny arsag til syg sinus-syndrom og langt QT-syndrom

    DEFF Research Database (Denmark)

    Vitved, T.; Lianee, H.T.; Stovring, B.;

    2008-01-01

    The sinus node hyperpolarization-activated If current generated by the cardiac pacemaker channels HCN2 and HCN4 determines the autonomous beating of the heart. Cardiac arrhythmias, like long-QT syndrome, are often caused by irregularities of the heart action potential generated by mutations...... in cardiac ion channel genes. Mutations in the HCN4 gene have been associated with sick sinus syndrome and long-QT syndrome. The identification of cardiac arrhythmia disease-associated genes makes possible new therapeutic strategies based on gene-specific drug treatment and gene therapy Udgivelsesdato: 2008/3/10...

  19. Lesson Nine Sinus node dysfunction

    Institute of Scientific and Technical Information of China (English)

    鲁端; 吴文烈

    2004-01-01

    @@ Sinus node dysfunction most often is found in the elderly as an isolated phenomenon. Although interruption of the blood supply to the sinus node may produce dysfunction, the correlation between obstruction of the sinus node artery and clinical evidence of sinus node dysfunction is poor.

  20. Use of an implantable loop recorder in the investigation of arrhythmias in adult captive chimpanzees (Pan troglodytes).

    Science.gov (United States)

    Lammey, Michael L; Jackson, Raven; Ely, John J; Lee, D Rick; Sleeper, Meg M

    2011-02-01

    Cardiovascular disease in general, and cardiac arrhythmias specifically, is common in great apes. However, the clinical significance of arrhythmias detected on short-duration electrocardiograms is often unclear. Here we describe the use of an implantable loop recorder to evaluate cardiac rhythms in 4 unanesthetized adult chimpanzees (Pan troglodytes), 1 with a history of possible syncope and 3 with the diagnosis of multiform ventricular ectopy (ventricular premature complexes) and cardiomyopathy. The clinical significance of ventricular ectopy was defined further by using the implantable loop recorder. Arrhythmia was ruled out as a cause of collapse in the chimpanzee that presented with possible syncope because the implantable loop recorder demonstrated normal sinus rhythm during a so-called syncopal event. This description is the first report of the use of an implantable loop recorder to diagnose cardiac arrhythmias in an unanesthetized great ape species.

  1. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... benefits vs. risks? Benefits A CT scan is one of the safest means of studying the sinuses. ... CT scanning provides very detailed images of many types of tissue as well as the lungs, bones, ...

  2. Pharmacological management of arrhythmias in the elderly

    NARCIS (Netherlands)

    VanGelder, IC; Brugemann, J; Crijns, HJGM

    1997-01-01

    The incidence of cardiac arrhythmia increases with advancing age, as does the prevalence of structural heart disease. Serious arrhythmias, such as sustained ventricular tachycardias, are uncommon in elderly patients, but nonsustained ventricular tachycardias and atrial fibrillation are relatively fr

  3. Arrhythmia risk in liver cirrhosis

    Institute of Scientific and Technical Information of China (English)

    Ioana Mozos

    2015-01-01

    Interactions between the functioning of the heart andthe liver have been described, with heart diseasesaffecting the liver, liver diseases affecting the heart,and conditions that simultaneously affect both. Theheart is one of the most adversely affected organs inpatients with liver cirrhosis. For example, arrhythmiasand electrocardiographic changes are observed inpatients with liver cirrhosis. The risk for arrhythmia isinfluenced by factors such as cirrhotic cardiomyopathy,cardiac ion channel remodeling, electrolyte imbalances,impaired autonomic function, hepatorenal syndrome, metabolic abnormalities, advanced age, inflammatory syndrome, stressful events, impaired drug metabolism and comorbidities. Close monitoring of cirrhotic patients is needed for arrhythmias, particularly when QT intervalprolonging drugs are given, or if electrolyte imbalances or hepatorenal syndrome appear. Arrhythmia risk may persist after liver transplantation due to possible QT interval prolongation, persistence of the parasympathetic impairment, post-transplant reperfusion and chronic immunosuppression, as well as consideration of the fact that the transplant itself is a stressful event for the cardiovascular system. The aims of the present article were to provide a review of the most important data regarding the epidemiology, pathophysiology, and biomarkers of arrhythmia risk in patients with liver cirrhosis, to elucidate the association with long-term outcome, and to propose future research directions.

  4. Molecular therapies for cardiac arrhythmias

    NARCIS (Netherlands)

    Boink, G.J.J.

    2013-01-01

    Despite the ongoing advances in pharmacology, devices and surgical approaches to treat heart rhythm disturbances, arrhythmias are still a significant cause of death and morbidity. With the introduction of gene and cell therapy, new avenues have arrived for the local modulation of cardiac disease. Th

  5. Metabolic Syndrome Remodels Electrical Activity of the Sinoatrial Node and Produces Arrhythmias in Rats

    Science.gov (United States)

    Albarado-Ibañez, Alondra; Avelino-Cruz, José Everardo; Velasco, Myrian; Torres-Jácome, Julián; Hiriart, Marcia

    2013-01-01

    In the last ten years, the incidences of metabolic syndrome and supraventricular arrhythmias have greatly increased. The metabolic syndrome is a cluster of alterations, which include obesity, hypertension, hypertriglyceridemia, glucose intolerance and insulin resistance, that increase the risk of developing, among others, atrial and nodal arrhythmias. The aim of this study is to demonstrate that metabolic syndrome induces electrical remodeling of the sinus node and produces arrhythmias. We induced metabolic syndrome in 2-month-old male Wistar rats by administering 20% sucrose in the drinking water. Eight weeks later, the rats were anesthetized and the electrocardiogram was recorded, revealing the presence of arrhythmias only in treated rats. Using conventional microelectrode and voltage clamp techniques, we analyzed the electrical activity of the sinoatrial node. We observed that in the sinoatrial node of “metabolic syndrome rats”, compared to controls, the spontaneous firing of all cells decreased, while the slope of the diastolic depolarization increased only in latent pacemaker cells. Accordingly, the pacemaker currents If and Ist increased. Furthermore, histological analysis showed a large amount of fat surrounding nodal cardiomyocytes and a rise in the sympathetic innervation. Finally, Poincaré plot denoted irregularity in the R-R and P-P ECG intervals, in agreement with the variability of nodal firing potential recorded in metabolic syndrome rats. We conclude that metabolic syndrome produces a dysfunction SA node by disrupting normal architecture and the electrical activity, which could explain the onset of arrhythmias in rats. PMID:24250786

  6. Segmentation of Sinus Images for Grading of Severity of Sinusitis

    Science.gov (United States)

    Iznita Izhar, Lila; Sagayan Asirvadam, Vijanth; Lee, San Nien

    Sinusitis is commonly diagnosed with techniques such as endoscopy, ultrasound, X-ray, Computed Tomography (CT) scan and Magnetic Resonance Imaging (MRI). Out of these techniques, imaging techniques are less invasive while being able to show blockage of sinus cavities. This project attempts to develop a computerize system by developing algorithm for the segmentation of sinus images for the detection of sinusitis. The sinus images were firstly undergo noise removal process by median filtering followed by Contrast Limited Adapted Histogram Equalisation (CLAHE) for image enhancement. Multilevel thresholding algorithm were then applied to segment the enhanced images into meaningful regions for the detection and diagnosis of severity of sinusitis. The multilevel thresholding algorithms based on Otsu method were able to extract three distinct and important features namely bone region, hollow and mucous areas from the images. Simulations were performed on images of healthy sinuses and sinuses with sinusitis. The developed algorithms are found to be able to differentiate and evaluate healthy sinuses and sinuses with sinusitis effectively.

  7. Cardiac Arrhythmias: Diagnosis, Symptoms, and Treatments.

    Science.gov (United States)

    Fu, Du-Guan

    2015-11-01

    The cardiac arrhythmia is characterized by irregular rhythm of heartbeat which could be either too slow (100 beats/min) and can happen at any age. The use of pacemaker and defibrillators devices has been suggested for heart arrhythmias patients. The antiarrhythmic medications have been reported for the treatment of cardiac arrhythmias or irregular heartbeats. The diagnosis, symptoms, and treatments of cardiac arrhythmias as well as the radiofrequency ablation, tachycardia, Brugada syndrome, arterial fibrillation, and recent research on the genetics of cardiac arrhythmias have been described here.

  8. Common cardiac arrhythmias: recognition and treatment.

    Science.gov (United States)

    Talmers, F N; Kinhal, V; Sabharwal, S; Weissler, A M

    1981-04-01

    Cardiac arrhythmias are commonly seen in the everyday practice of medicine by the physician. Although certain arrhythmias may be suspected clinically, precise diagnosis is made by electrocardiographic recording of the abnormal rhythm. Once the arrhythmia has been recorded, the next steps are proper electrocardiographic diagnosis and selection of proper treatment. The specific mode of therapy and the speed with which it is delivered will depend not only on the type of arrhythmia, but also on the hemodynamic consequences of the rhythm abnormality on the patient's cardiovascular system. The purpose of this paper is to discuss the electrocardiographic criteria of common cardiac arrhythmias as well as current concepts regarding therapy.

  9. Flecainide: Current status and perspectives in arrhythmia management

    Institute of Scientific and Technical Information of China (English)

    George; K; Andrikopoulos; Sokratis; Pastromas; Stylianos; Tzeis

    2015-01-01

    Flecainide acetate is a class IC antiarrhythmic agent and its clinical efficacy has been confirmed by the results of several clinical trials. Nowadays, flecainide is recommended as one of the first line therapies for pharmacological conversion as well as maintenance of sinus rhythm in patients with atrial fibrillation and/or supraventricular tachycardias. Based on the Cardiac Arrhythmia Suppression Trial study results, flecainide is not recommended in patients with structural heart disease due to high proarrhythmic risk. Recent data support the role of flecainide in preventing ventricular tachyarrhythmias in patients with catecholaminergic polymorphic ventricular tachycardia associated both with ryanodine receptor and calsequestrin mutations. We herein review the current clinical data related to flecainide use in clinical practice and some concerns about its role in the management of patients with coronary artery disease.

  10. ORBITAL MANIFESTATIONS OF SINUS DISEASE

    Directory of Open Access Journals (Sweden)

    Jyothirmayi

    2015-01-01

    Full Text Available AIM : To study the orbital manifestations in patients with sinus disease. METHODS : Patients wit h paranasal sinus disease presenting to OPD at Government ENT Hospital, AMC, Visakhapatnam from January 2012 to June 2014 were screened for orbital manifestations. Out of these, thirteen patients with orbital disease were referred to GREH, AMC, Visakhapatn am and were thoroughly investigated and managed appropriately. RESULTS : Out of the 14 patients 4 were female and 10 were male. Age ranged from 19 years to 70 years. 5 had maxillary sinus disease (4 - carcinoma and 1 case of mucormycosis. Frontal sinus dis ease was seen in two patients, one fibrous dysplasia and one malignancy. Five patients had ethmoidal sinus disease of which three patients were found to have ethmoidal sinus tumour (Malignant melanoma, Squamous cell Carcinoma. More than two sinuses were i nvolved in 2 patients. CONCLUSIONS : Early screening of patients with sinus disease by an Ophthalmologist can help in preventing severe vision threatening orbital complications.

  11. [Mucormycosis in paranasal sinuses].

    Science.gov (United States)

    Volkenstein, S; Unkel, C; Neumann, A; Sudhoff, H; Dermoumi, H; Jahnke, K; Dazert, S

    2009-08-01

    Three patients with mucormycosis of the paranasal sinuses were treated in the University ENT departments in Bochum and Essen in recent years. All patients were immunocompromised for different reasons and had reduced resistance against microorganism infection. They presented with symptoms of orbital complications of sinusitis. The further progress of these life-threatening fungal infections with a mortality rate between 35 and 70% depends on early and definitive diagnosis and radical surgical therapy to reduce the amount of infectious agent. The difficulties of early diagnosis by imaging, histology, microbiology, or molecular biology and postoperative therapeutic options especially with amphotericin B, liposomal amphotericin B, and posaconazole are illustrated and discussed.

  12. [Histopathologic study of chronic sinusitis].

    Science.gov (United States)

    Wayoff, M; Parache, R M; Bodelet, B; Gazel, P

    1983-01-01

    The conventional histopathology of the sinus is a criterium for the therapeutic indication, since it is possible to distinguish between granulomatous chronic sinusitis, chronic sinusitis with oedema and nasal polyposis. Each one of these clinical pictures has his own etiology and requires a specific therapeutic approach.

  13. Acute fulminant invasive fungal sinusitis with cavernous sinus syndrome.

    Science.gov (United States)

    Chi, Tzu-Hang; Chen, Hsien-Shen; Yuan, Chien-Han; Su, Feng-Ming

    2014-11-01

    Acute fulminant invasive fungal sinusitis is most commonly found in immunocompromised patients with conditions such as diabetes mellitus, malignancies and acquired immune deficiency syndrome. The most common pathogens are Aspergillus and Mucoraceae and the sinus most frequently involved is the maxillary sinus. Fever, rhinorrhea, facial pain, headache, and diplopia are common presenting symptoms. Complications of this infection include intracranial and / or intraorbital spread of the infection; the prognosis is poor. Here, a rare case of acute fulminant invasive fungal sinusitis with cavernous sinus syndrome is reported.

  14. Cardiac arrhythmias during fiberoptic bronchoscopy and relation with oxygen saturation

    Directory of Open Access Journals (Sweden)

    Hassan G

    2005-01-01

    Full Text Available To evaluate the occurrence of electrocardiographic abnormalities during fiberoptic bronchoscopy, in relation to specific stages of the procedures, patients′ age, sex, smoking, pre-existing lung disease, premedication and oxygen saturation, a prospective study was conducted on 56 patients aged 35 to 75 (mean 62 years without pre-existing cardiovascular disease. Patients were connected to a 12-lead computerized electrocardiographic recorder and pulse oximeter. Fall of oxygen saturation from mean of 95.12% before the procedure to below 80% was observed in 12 (21.4% patients and below 75% in 5 (8.9% patients, at various stages. Statistically highly significant (p < 0.001 fall of oxygen saturation was observed during the procedures while bronchoscope was introduced into the airways and tracheobronchial tree examined. Major disturbances of cardiac rhythm (i.e. atrial, ventricular or both developed in 23 (41.07% patients. Out of these, sinus tachycardia was noted in 16 (69.5%, ventricular premature complexes in 5 (21.7% and paroxysmal supraventricular tachycardia in 2 (8.6% patients. Arrhythmias were most frequent in association with periods of maximum oxygen desaturation in 18 (78.2% of these 23 patients. Oxygen desaturation persisted for more than half an hour in 38 (67.8% of the 56 patients. However, no correlation was observed between the frequency of arrhythmias during bronchoscopy and patients′ age, sex pre-medication or pre-existing pulmonary disease.

  15. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... the best way to see if treatment is working or if a finding is stable or changed over time. top of page What are the benefits vs. risks? Benefits A CT scan is one of the safest means of studying the sinuses. CT is the most reliable imaging ...

  16. Frequency of cardiac arrhythmias in high and low- yielding dairy cows

    Directory of Open Access Journals (Sweden)

    Afshin Jafari Dehkordi

    2014-06-01

    Full Text Available Electrocardiography (ECG may be used to recognize cardiac disorders. Levels of milk production may change the serum electrolytes which its imbalance has a role in cardiac arrhythmia. Fifty high yielding and fifty low yielding Holstein dairy cows were used in this study. Electrocardiography was recorded by base-apex lead and blood samples were collected from jugular vein for measurement of serum elements such as sodium, potassium, calcium, phosphorous, iron and magnesium. Cardiac dysrhythmias were detected more frequent in low yielding Holstein cows (62.00% compared to high yielding Holstein cows (46.00%. The cardiac dysrhythmias that were observed in low yielding Holstein cows included sinus arrhythmia (34.70%, wandering pacemaker (22.45 %, bradycardia (18.37%, tachycardia (10.20%, atrial premature beat (2.04%, sinoatrial block (2.04%, atrial fibrillation (8.16% and atrial tachycardia (2.04%. The cardiac dysrhythmias were observed in high yielding Holstein cows including, sinus arrhythmia (86.95% and wandering pacemaker (13.05%. Also, notched P wave was observed to be 30% and 14% in high- and low- yielding Holstein cows respectively. The serum calcium concentration of low yielding Holstein cows was significantly lower than that of high yielding Holstein cows. There was not any detectable significant difference in other serum elements between high- and low- yielding Holstein cows. Based on the result of present study, could be concluded that low serum concentration of calcium results to more frequent dysrhythmias in low yielding Holstein cows.

  17. Mechanism of escape, extrasystolic, and parasystolic arrhythmias. Study on an electrical analogue.

    Science.gov (United States)

    Sideris, D A

    1976-01-01

    A simple analogue of the heart consisting of a system of neon relaxation oscillators is presented. The analogue may display rhythm patterns similar to sinus rhythm, escape rhythm, isorrhythmic dissociation with synchronization, atrial extrasystoles, ventricular extrasystoles, and parasystole. The strict rules followed by these arrhythmias, as well as the deviations from the rules commonly followed by the equivalent heart arrhythmias, may be easily reproduced on the analogue. Such features are the Treppe phenomenon and captured beats in escape rhythm, fixed coupling intervals in extrasystoles, partial or complete atrioventricular block in very premature atrial extrasystoles, prolongation of the period following an atrial extrasystole, interpolated premature beats, complete compensatory pause and the rule of bigeminy in ventricular extrasystoles, slight instability of the parasystolic period, multiple length parasystolic periods slightly different from the exact multiples of the parasystolic idioperiod, preference of the parasystoles for certain phase in the sinus cycle, synchronization at a phase difference and fluctuation repeatedly and without interruption from a parasystolic to an extrasystolic rhythm and synchronization in escape rhythm with isorrhythmic dissociation. The mechanisms involved in these phenomena are discussed in detail. The striking similarity between the properties of the cardiac pacemakers and those of the relaxation oscillators on the one hand and betwen the rhythm patterns of the heart and those of the analogue on the other may permit the hypothesis that the mechanisms operating in the analogue may be used in analyzing and understanding heart arrhythmias.

  18. Beyond pure parasystole: promises and problems in modeling complex arrhythmias.

    Science.gov (United States)

    Courtemanche, M; Glass, L; Rosengarten, M D; Goldberger, A L

    1989-08-01

    The dynamics of pure parasystole, a cardiac arrhythmia in which two competing pacemakers fire independently, have recently been fully characterized. This model is now extended in an attempt to account for the more complex dynamics occurring with modulated parasystole, in which there exists nonlinear interaction between the sinus node and the ectopic ventricular focus. Theoretical analysis of modulated parasystole reveals three types of dynamics: entrainment, quasiperiodicity, and chaos. Rhythms associated with quasiperiodicity obey a set of rules derived from pure parasystole. This model is applied to the interpretation of continuous electrocardiographic data sets from three patients with complicated patterns of ventricular ectopic activity. We describe several new statistical properties of these records, related to the number of intervening sinus beats between ectopic events, that are essential in characterizing the dynamics and testing mathematical models. Detailed comparison between data and theory in these cases show substantial areas of agreement as well as potentially important discrepancies. These findings have implications for understanding the dynamics of the heartbeat in normal and pathological conditions.

  19. Sinus augmentation surgery after endoscopic sinus surgery for the treatment of chronic maxillary sinusitis: a case report.

    Science.gov (United States)

    Tobita, Takayoshi; Nakamura, Mikiko; Ueno, Takaaki; Sano, Kazuo

    2011-10-01

    Chronic sinusitis develops when the ostiomeatal complex becomes stenosed by the swelling of the sinus mucosa. Previously, the Caldwell-Luc method was performed for the treatment of chronic sinusitis. But postoperative complications, such as discomfort of the buccal skin and recurrence of sinusitis, frequently occurred after the operation. Today, endoscopic sinus surgery (ESS) has become widely used for the treatment of chronic sinusitis. The features of ESS allow for the restoration of the physical function of the sinus membrane and preservation of the physiological environment of the sinus. Therefore, sinus augmentation surgery can be safely performed at an insufficient alveolar bone height below the maxillary sinus when sinusitis is eliminated by the ESS. This article documents a patient history involving chronic sinusitis that was treated by the ESS therapy before sinus augmentation surgery as a pretreatment for insertion of dental implants.

  20. Isolated Cardiac Involvement in Primary Amyloidosis: Presenting as Sick Sinus Syndrome and Heart Failure

    OpenAIRE

    Pattanshetty, Deepak J.; Bhat,Pradeep K; Chamberlain, Wendy A.; Lyons, Matthew R.

    2013-01-01

    Cardiac amyloidosis is an infiltrative cardiomyopathy with a grave prognosis. Its clinical manifestations include restrictive cardiomyopathy, diastolic heart failure, conduction defects, and arrhythmias. Isolated cardiac involvement and significant conduction disturbances are reported very infrequently. We report a rare case of isolated cardiac involvement in primary amyloidosis, in a 76-year-old man who initially presented with sick sinus syndrome that necessitated permanent pacemaker insert...

  1. Effects of maxillary sinus floor elevation surgery on maxillary sinus physiology

    NARCIS (Netherlands)

    Timmenga, NM; Raghoebar, GM; Liem, RSB; van Weissenbruch, R; Manson, WL; Vissink, A

    2003-01-01

    In a prospective study, the effects of elevation surgery of the maxillary sinus floor on maxillary sinus physiology were assessed. Seventeen consecutive patients without preoperative anamnestic, clinical and radiological signs of maxillary sinusitis underwent sinus floor elevation surgery with iliac

  2. Perforation of the sinus membrane during sinus floor elevation

    DEFF Research Database (Denmark)

    von Arx, Thomas; Fodich, Ivo; Bornstein, Michael M;

    2014-01-01

    PURPOSE: To analyze the frequency of perforation of the sinus membrane during maxillary sinus floor elevation (SFE) and to assess possible risk factors. MATERIALS AND METHODS: Seventy-seven cases of SFE performed with a lateral window approach were evaluated retrospectively. Clinical and radiogra......PURPOSE: To analyze the frequency of perforation of the sinus membrane during maxillary sinus floor elevation (SFE) and to assess possible risk factors. MATERIALS AND METHODS: Seventy-seven cases of SFE performed with a lateral window approach were evaluated retrospectively. Clinical...... (presence and height of septum, height of residual ridge, thickness of lateral sinus wall, width of antrum, and thickness and status of sinus membrane). RESULTS: The following factors presented with at least a 10% difference in rates of perforations: smokers (46.2%) versus nonsmokers (23.4%), simultaneous...... the lateral window approach....

  3. 10.2.Cardiac arrhythmias

    Institute of Scientific and Technical Information of China (English)

    1993-01-01

    930257 Electrophysiologic study of reperfu-sion arrhythmias.YIN Hong (尹红),et al.Af-fil Hosp,Shandong Med Univ,Jinan.Chin CirJ 1993;8(1):37—39.Twenty dogs of experimental ischemic reper-fusion were studied with a three-dimensionalmapping system of cardiac electric activity andmultiple—level myocardial recordings by bipolarplunge—needle electrodes.27% of the nonsus-tained ventricular tachycardia (NSVT) of intra-mural reentry occurred in the ischemic subendo-

  4. Studies on magnesium's mechanism of action in digitalis-induced arrhythmias.

    Science.gov (United States)

    Specter, M J; Schweizer, E; Goldman, R H

    1975-12-01

    The mechanism by which magnesium affects digitalis-induced arrhythmias was studied in dogs with and without beta-receptor blockade. Digoxin was infused at a rate of 2.5mug/kg/min until ventricular tachycardia developed, then half the animals were given MgSO4, the other half saline. In animals given MgSO4, sinus rhythm was immediately re-established; in animals given saline, ventricular tachycardia persisted. In animals with beta-receptor blockade, MgSO4 was as effective in abolishing ventricular tachycardia as in those without beta-receptor blockade. We found no evidence that magnesium re-activated digoxin-inhibited (Na+, K+)-ATPase, altered myocardial or microsomal digoxin binding, or acted via the autonomic nervous system. Magnesium's direct effect on calcium and potassium fluxes across the myocardial cell membrane may be the mechanism of its antiarrhythmic action in digitalis-toxic arrhythmias.

  5. Arrhythmias

    Science.gov (United States)

    ... when to contract and pump blood around the body. The electrical signals start in a group of cells, called the ... a small battery-operated device implanted into the body (near the collarbone) through ... signals to speed up the heartbeat. Defibrillators. A small ...

  6. [Orbital complications of sinusitis].

    Science.gov (United States)

    Šuchaň, M; Horňák, M; Kaliarik, L; Krempaská, S; Koštialová, T; Kovaľ, J

    2014-12-01

    Orbital complications categorised by Chandler are emergency. They need early diagnosis and agresive treatment. Stage and origin of orbital complications are identified by rhinoendoscopy, ophtalmologic examination and CT of orbite and paranasal sinuses. Periorbital cellulitis and early stage of orbital cellulitis can be treated conservatively with i. v. antibiotics. Monitoring of laboratory parameters and ophtalmologic symptoms is mandatory. Lack of improvement or worsening of symptoms within 24-48 hours and advanced stages of orbital complications are indicated for surgery. The purpose of the study is to evaluate epidemiology, clinical features and management of sinogenic orbital complications. Retrospective data of 8 patients with suspicion of orbital complication admited to hospital from 2008 to 2013 were evaluated. Patients were analyzed in terms of gender, age, CT findings, microbiology, clinical features, stage and treatment. Male and female were afected in rate 1,66:1. Most of patients were young adult in 3rd. and 4th. decade of life (62,5 %). Acute and chronic sinusitis were cause of orbital complication in the same rate. The most common origin of orbital complication was ethmoiditis (62,5 %), than maxillary (25 %) and frontal (12,5 %) sinusitis. Polysinusitis with affection of ethmoidal, maxillary and frontal sinuses (75 %) was usual CT finding. Staphylococcus epidermidis and Staphylococcus aureus were etiological agens in half of cases. Periorbital oedema (100 %), proptosis, chemosis (50 %), diplopia and glaucoma (12,5 %) were observed. Based on examinations, diagnosis of periorbital oedema/preseptal cellulitis was made in 3 (37,5 %), orbital cellulitis in 3 (37,5 %) and subperiosteal abscess in 2 cases (25 %). All patients underwent combined therapy - i. v. antibiotics and surgery within 24 hours. Eradication of disease from ostiomeatal complex (OMC), drainage of affected sinuses and drainage of subperiosteal abscess were done via fuctional endonasal

  7. Understanding Biofilms in Chronic Sinusitis.

    Science.gov (United States)

    Tajudeen, Bobby A; Schwartz, Joseph S; Palmer, James N

    2016-02-01

    Chronic sinusitis is a burdensome disease that has substantial individual and societal impact. Although great advances in medical and surgical therapies have been made, some patients continue to have recalcitrant infections. Microbial biofilms have been implicated as a cause of recalcitrant chronic sinusitis, and recent studies have tried to better understand the pathogenesis of chronic sinusitis as it relates to microbial biofilms. Here, we provide an overview of biofilms in chronic sinusitis with emphasis on pathogenesis, treatment, and future directions. In addition, recent evidence is presented, elucidating the role of bitter taste receptors as a possible key factor leading to biofilm formation.

  8. Odontogenic maxillary sinusitis: a review.

    Science.gov (United States)

    Simuntis, Regimantas; Kubilius, Ričardas; Vaitkus, Saulius

    2014-01-01

    Maxillary sinusitis of odontogenic origin is a well-known condition in both the dental and otolaryngology communities. It occurs when the Schneiderian membrane is violated by conditions arising from dentoalveolar unit. This type of sinusitis differs in its pathophysiology, microbiology, diagnostics and management from sinusitis of other causes, therefore, failure to accurately identify a dental cause in these patients usually lead to persistent symptomatology and failure of medical and surgical therapies directed toward sinusitis. Unilateral recalcitrant disease associated with foul smelling drainage is a most common feature of odontogenic sinusitis. Also, high-resolution CT scans and cone-beam volumetric computed tomography can assist in identifying dental disease. Sometimes dental treatment alone is adequate to resolve the odontogenic sinusitis and sometimes concomitant or subsequent functional endoscopic sinus surgery or Caldwell-Luc operation is required. The aim of this article is to give a review of the most common causes, symptoms, diagnostic and treatment methods of odontogenic maxillary sinusitis. Search on Cochrane Library, PubMed and Science Direct data bases by key words resulted in 35 articles which met our criteria. It can be concluded that the incidence of odontogenic sinusitis is likely underreported in the available literature.

  9. Atrial Arrhythmia Summit: Post Summit Report

    Science.gov (United States)

    Barr, Yael

    2010-01-01

    The Atrial Arrhythmia Summit brought together nationally and internationally recognized experts in cardiology, electrophysiology, exercise physiology, and space medicine in an effort to elucidate the mechanisms, risk factors, and management of atrial arrhythmias in the unique occupational cohort of the U.S. astronaut corps.

  10. Drug-induced arrhythmias, quantifying the problem

    NARCIS (Netherlands)

    Bruin, M.L. de

    2004-01-01

    Cardiac arrhythmias as an adverse reaction to the use of non-antiarrhythmic drugs have attracted much attention during recent years. It has become the single most common reason for regulatory action regarding the marketing of drugs. Although drug-induced arrhythmias are very rare (approximately 1 pe

  11. Update in cardiac arrhythmias and pacing.

    Science.gov (United States)

    García-Bolao, Ignacio; Ruiz-Mateas, Francisco; Bazan, Victor; Berruezo, Antonio; Alcalde, Oscar; Leal del Ojo, Juan; Acosta, Juan; Martínez Sellés, Manuel; Mosquera, Ignacio

    2015-03-01

    This article discusses the main advances in cardiac arrhythmias and pacing published between 2013 and 2014. Special attention is given to the interventional treatment of atrial fibrillation and ventricular arrhythmias, and on advances in cardiac pacing and implantable cardioverter defibrillators, with particular reference to the elderly patient.

  12. Acute bacterial sinusitis in children.

    Science.gov (United States)

    DeMuri, Gregory; Wald, Ellen R

    2013-10-01

    On the basis of strong research evidence, the pathogenesis of sinusitis involves 3 key factors: sinusostia obstruction, ciliary dysfunction, and thickening of sinus secretions. On the basis of studies of the microbiology of otitis media, H influenzae is playing an increasingly important role in the etiology of sinusitis, exceeding that of S pneumoniae in some areas, and b-lactamase production by H influenzae is increasing in respiratory isolates in the United States. On the basis of some research evidence and consensus,the presentation of acute bacterial sinusitis conforms to 1 of 3 predicable patterns; persistent, severe, and worsening symptoms. On the basis of some research evidence and consensus,the diagnosis of sinusitis should be made by applying strict clinical criteria. This approach will select children with upper respiratory infection symptoms who are most likely to benefit from an antibiotic. On the basis of some research evidence and consensus,imaging is not indicated routinely in the diagnosis of sinusitis. Computed tomography or magnetic resonance imaging provides useful information when complications of sinusitis are suspected. On the basis of some research evidence and consensus,amoxicillin-clavulanate should be considered asa first-line agent for the treatment of sinusitis.

  13. Managing acute invasive fungal sinusitis.

    Science.gov (United States)

    Dwyhalo, Kristina M; Donald, Carrlene; Mendez, Anthony; Hoxworth, Joseph

    2016-01-01

    Acute invasive fungal sinusitis is the most aggressive form of fungal sinusitis and can be fatal, especially in patients who are immunosuppressed. Early diagnosis and intervention are crucial and potentially lifesaving, so primary care providers must maintain a high index of suspicion for this disease. Patients may need to be admitted to the hospital for IV antifungal therapy and surgical debridement.

  14. Aggressiv fibromatose i sinus frontalis

    DEFF Research Database (Denmark)

    Godballe, Christian; Jensen, Søren Gade; Krogdahl, Annelise

    2009-01-01

    Aggressive fibromatosis (AF) is a benign tumour with expansive and locally invasive growth. It is very rarely seen in the head and neck area. We present a 52-year-old female patient with AF localized to the left frontal sinus. The condition was initially mistaken for chronic sinusitis however...

  15. Antibiotics for acute maxillary sinusitis

    DEFF Research Database (Denmark)

    Ahovuo-Saloranta, Anneli; Borisenko, Oleg V; Kovanen, Niina;

    2008-01-01

    BACKGROUND: Expert opinions vary on the appropriate role of antibiotics for sinusitis, one of the most commonly diagnosed conditions among adults in ambulatory care. OBJECTIVES: We examined whether antibiotics are effective in treating acute sinusitis, and if so, which antibiotic classes...... or antibiotics from different classes for acute maxillary sinusitis in adults. We included trials with clinically diagnosed acute sinusitis, whether or not confirmed by radiography or bacterial culture. DATA COLLECTION AND ANALYSIS: At least two review authors independently screened search results, extracted...... with a pooled RR of 0.74 (95% CI 0.65 to 0.84) at 7 to 15 days follow up. None of the antibiotic preparations was superior to each other. AUTHORS' CONCLUSIONS: Antibiotics have a small treatment effect in patients with uncomplicated acute sinusitis in a primary care setting with symptoms for more than seven...

  16. Cardiac arrhythmias during or after epileptic seizures.

    Science.gov (United States)

    van der Lende, Marije; Surges, Rainer; Sander, Josemir W; Thijs, Roland D

    2016-01-01

    Seizure-related cardiac arrhythmias are frequently reported and have been implicated as potential pathomechanisms of Sudden Unexpected Death in Epilepsy (SUDEP). We attempted to identify clinical profiles associated with various (post)ictal cardiac arrhythmias. We conducted a systematic search from the first date available to July 2013 on the combination of two terms: 'cardiac arrhythmias' and 'epilepsy'. The databases searched were PubMed, Embase (OVID version), Web of Science and COCHRANE Library. We attempted to identify all case reports and case series. We identified seven distinct patterns of (post)ictal cardiac arrhythmias: ictal asystole (103 cases), postictal asystole (13 cases), ictal bradycardia (25 cases), ictal atrioventricular (AV)-conduction block (11 cases), postictal AV-conduction block (2 cases), (post)ictal atrial flutter/atrial fibrillation (14 cases) and postictal ventricular fibrillation (3 cases). Ictal asystole had a mean prevalence of 0.318% (95% CI 0.316% to 0.320%) in people with refractory epilepsy who underwent video-EEG monitoring. Ictal asystole, bradycardia and AV-conduction block were self-limiting in all but one of the cases and seen during focal dyscognitive seizures. Seizure onset was mostly temporal (91%) without consistent lateralisation. Postictal arrhythmias were mostly found following convulsive seizures and often associated with (near) SUDEP. The contrasting clinical profiles of ictal and postictal arrhythmias suggest different pathomechanisms. Postictal rather than ictal arrhythmias seem of greater importance to the pathophysiology of SUDEP.

  17. IDIOPATHIC SICK SINUS SYNDROME

    Directory of Open Access Journals (Sweden)

    S. Y. Nikulina

    2015-12-01

    Full Text Available Aim. To evaluate changes in hereditary burden of sick sinus syndrome (SSS in families of patients with SSS and assess heart rate variability (HRV in patients with SSS.Results. 33 families of patients with SSS were examined. Clinical study, ECG-Holter monitoring, atropine test, transesophageal left atrial stimulation, echocardiography, veloergometry were fulfilled in all probands and their relatives in 1990 and 2005-2006. Cardiorhythmography was done in patients with SSS only in 2005-2006.Results. Increase in hereditary burden with SSS from 31 to 35% is registered during 15 years. Significant growth of patients with SSS was observed among daughters (from 50 to 71%, nephews (from 33 to 50% and nieces (from 0 to 20%. HRV analysis shows prevalence of sympathetic system activity in patients with SSS.Conclusion. Growth of hereditary burden with SSS especially among female relatives is shown. HRV analysis can be used for SSS diagnostics.

  18. Effect of female sex on cardiac arrhythmias.

    Science.gov (United States)

    Gowd, B M Pampana; Thompson, Paul D

    2012-01-01

    We performed a systematic literature review to examine the effect of female sex on cardiac electrophysiology and arrhythmias. Women have faster resting heart rates yet longer QTc intervals. Women also have shorter PR and QRS intervals; these are presumed to be due to the small heart size of women and hormonal effects on ion channels. Women are two times more likely to experience atrioventricular nodal re-entry tachycardia than men. In contrast to atrioventricular nodal re-entry tachycardia, accessory-pathway-mediated atrial arrhythmias are less common in women, and women have more concealed and fewer manifest accessory pathways. Supraventricular tachycardia in women varies with the menstrual cycle and is more frequent in the luteal phase and inversely correlated with estrogen levels. Atrial fibrillation (AF) is less prevalent in women, but the absolute number of women with AF is higher because AF prevalence increases with age and women live longer. Also, complications of AF are greater in women. Women are generally less prone to ventricular arrhythmias, but they comprise a higher percentage of symptomatic subjects with congenital long QT syndrome and are more often affected by drugs that prolong the QT. Women are less prone to arrhythmias during pregnancy although they commonly complain of palpitations, which are sometimes related to the increase in heart rate during pregnancy. Clinicians should explore the relationship of arrhythmias to the menstrual cycle in female patients and should know that the menstrual cycle may affect the induction of arrhythmias during electrophysiological testing. Clinicians should also be aware that the arrhythmia and the result of clinical trials examining arrhythmia treatment may have different implications in women than in men.

  19. Radiology in diagnostics of odontogenic maxillary sinusitis

    Directory of Open Access Journals (Sweden)

    Chekhonatskaya М.L

    2013-09-01

    Full Text Available The purpose: to prove diagnostic capabilities of modern radiation techniques in odontogenic maxillary sinusitis. Material and methods: The study involved 546 patients with sinusitis. The following methods have been used: X-ray of the paranasal sinuses, contrast maxillary sinus radiography, contact intraoral radiographs, orthopantomography, computer tomography and magnetic resonance imaging. Results. In 7,9% of cases the presence of odontogenic sinusitis has been established, in 92,1 % rhinogenous sinusitis has been revealed. The work provides information about the effectiveness of various radiation techniques in the diagnosis of odontogenic sinusitis. Conclusion. For suspected odontogenic sinusitis, treatment of choice includes the combined use of X-ray of the paranasal sinuses in the mentoanterior projection and contact intraoral radiographs of «causal teeth». Computer tomography is the most informative additional method to clarify the diagnosis of odontogenic sinusitis.

  20. Inherited arrhythmias: The cardiac channelopathies

    Directory of Open Access Journals (Sweden)

    Shashank P Behere

    2015-01-01

    Full Text Available Ion channels in the myocardial cellular membrane are responsible for allowing the cardiac action potential. Genetic abnormalities in these channels can predispose to life-threatening arrhythmias. We discuss the basic science of the cardiac action potential; outline the different clinical entities, including information regarding overlapping diagnoses, touching upon relevant genetics, new innovations in screening, diagnosis, risk stratification, and management. The special considerations of sudden unexplained death and sudden infant death syndrome are discussed. Scientists and clinicians continue to reconcile the rapidly growing body of knowledge regarding the molecular mechanisms and genetics while continuing to improve our understanding of the various clinical entities and their diagnosis and management in clinical setting. Two separate searches were run on the National Center for Biotechnology Information′s website. The first using the term cardiac channelopathies was run on the PubMed database using filters for time (published in past 5 years and age (birth-18 years, yielding 47 results. The second search using the medical subject headings (MeSH database with the search terms "Long QT Syndrome" (MeSH and "Short QT Syndrome" (MeSH and "Brugada Syndrome" (MeSH and "Catecholaminergic Polymorphic Ventricular Tachycardia" (MeSH, applying the same filters yielded 467 results. The abstracts of these articles were studied, and the articles were categorized and organized. Articles of relevance were read in full. As and where applicable, relevant references and citations from the primary articles where further explored and read in full.

  1. CLINICAL SIGNIFICANCE AND PROGNOSIS OF FETAL ARRHYTHMIAS

    Institute of Scientific and Technical Information of China (English)

    Qing-bo Fan; Ming-ying Gai; Jian-qiu Yang; Fei-fei Xing

    2004-01-01

    Objective To explore fetal arrhythmia clinical significance and its correlation with fetal prognosis.Methods Twenty-six cases of fetal arrhythmia detected among 12 799 pregnant women recorded over a ten-year period in Peking Uinon Medical College (PUMC) Hospital were reviewed retrospectively. Fetal arrhythmia was diagnosed by fetal auscultation, ultrasonography, electric fetal heart monitoring, and fetal echocardiography.Results Twenty-six fetuses were documented with fetal arrhythmia (3 tachycardia, 4 bradycardia, 19 normal heart rate with irregular fetal cardiac rhythm). The incidence of fetal arrhythmia in our hospital was 0.2%. They were diagnosed at the average of 35 weeks' gestation (15 to 41 weeks). Twenty-two cases were diagnosed by antenatal fetal auscultation, 1 case was diagnosed by ultrasonography, and 3 cases were diagnosed by electric fetal heart monitoring. Fetal echocardiograms were performed on 17 fetuses, 6 cases (35.3%) of which showed that ventricular premature beats with normal structure of fetal heart.All neonates survived postnatally and 24 of them (92.3%) were followed up. Echocardiograms were performed for 16 neonates and 2 of them were identified as atrial septal defects with normal heart rhythms. The results of follow-up showed that the two patients had no apparent clinical manifestation. The echocardiogram showed that atrial septal defect obliterated already.Conclusion The prognosis is well for most of the fetuses with arrhythmias, with low incidence of heart deformation.

  2. Cardiac arrhythmias during or after epileptic seizures

    Science.gov (United States)

    van der Lende, Marije; Surges, Rainer; Sander, Josemir W; Thijs, Roland D

    2016-01-01

    Seizure-related cardiac arrhythmias are frequently reported and have been implicated as potential pathomechanisms of Sudden Unexpected Death in Epilepsy (SUDEP). We attempted to identify clinical profiles associated with various (post)ictal cardiac arrhythmias. We conducted a systematic search from the first date available to July 2013 on the combination of two terms: ‘cardiac arrhythmias’ and ‘epilepsy’. The databases searched were PubMed, Embase (OVID version), Web of Science and COCHRANE Library. We attempted to identify all case reports and case series. We identified seven distinct patterns of (post)ictal cardiac arrhythmias: ictal asystole (103 cases), postictal asystole (13 cases), ictal bradycardia (25 cases), ictal atrioventricular (AV)-conduction block (11 cases), postictal AV-conduction block (2 cases), (post)ictal atrial flutter/atrial fibrillation (14 cases) and postictal ventricular fibrillation (3 cases). Ictal asystole had a mean prevalence of 0.318% (95% CI 0.316% to 0.320%) in people with refractory epilepsy who underwent video-EEG monitoring. Ictal asystole, bradycardia and AV-conduction block were self-limiting in all but one of the cases and seen during focal dyscognitive seizures. Seizure onset was mostly temporal (91%) without consistent lateralisation. Postictal arrhythmias were mostly found following convulsive seizures and often associated with (near) SUDEP. The contrasting clinical profiles of ictal and postictal arrhythmias suggest different pathomechanisms. Postictal rather than ictal arrhythmias seem of greater importance to the pathophysiology of SUDEP. PMID:26038597

  3. Gene therapy to treat cardiac arrhythmias.

    Science.gov (United States)

    Bongianino, Rossana; Priori, Silvia G

    2015-09-01

    Gene therapy to treat electrical dysfunction of the heart is an appealing strategy because of the limited therapeutic options available to manage the most-severe cardiac arrhythmias, such as ventricular tachycardia, ventricular fibrillation, and asystole. However, cardiac genetic manipulation is challenging, given the complex mechanisms underlying arrhythmias. Nevertheless, the growing understanding of the molecular basis of these diseases, and the development of sophisticated vectors and delivery strategies, are providing researchers with adequate means to target specific genes and pathways involved in disorders of heart rhythm. Data from preclinical studies have demonstrated that gene therapy can be successfully used to modify the arrhythmogenic substrate and prevent life-threatening arrhythmias. Therefore, gene therapy might plausibly become a treatment option for patients with difficult-to-manage acquired arrhythmias and for those with inherited arrhythmias. In this Review, we summarize the preclinical studies into gene therapy for acquired and inherited arrhythmias of the atria or ventricles. We also provide an overview of the technical advances in the design of constructs and viral vectors to increase the efficiency and safety of gene therapy and to improve selective delivery to target organs.

  4. Exercise-induced ventricular arrhythmias and vagal dysfunction in Chagas disease patients with no apparent cardiac involvement

    Directory of Open Access Journals (Sweden)

    Henrique Silveira Costa

    2015-04-01

    Full Text Available INTRODUCTION : Exercise-induced ventricular arrhythmia (EIVA and autonomic imbalance are considered as early markers of heart disease in Chagas disease (ChD patients. The objective of the present study was to verify the differences in the occurrence of EIVA and autonomic maneuver indexes between healthy individuals and ChD patients with no apparent cardiac involvement. METHODS : A total of 75 ChD patients with no apparent cardiac involvement, aged 44.7 (8.5 years, and 38 healthy individuals, aged 44.0 (9.2 years, were evaluated using echocardiography, symptom-limited treadmill exercise testing and autonomic function tests. RESULTS : The occurrence of EIVA was higher in the chagasic group (48% than in the control group (23.7% during both the effort and the recovery phases. Frequent ventricular contractions occurred only in the patient group. Additionally, the respiratory sinus arrhythmia index was significantly lower in the chagasic individuals compared with the control group. CONCLUSIONS : ChD patients with no apparent cardiac involvement had a higher frequency of EIVA as well as more vagal dysfunction by respiratory sinus arrhythmia. These results suggest that even when asymptomatic, ChD patients possess important arrhythmogenic substrates and subclinical disease.

  5. Radiology in diagnostics of odontogenic maxillary sinusitis

    OpenAIRE

    Chekhonatskaya М.L; llyasova Е.В.; Konnov V.V.; Priezzheva V.N.; Kochanov S.V.; Khmara T.G.; Arushanian A.R.

    2013-01-01

    The purpose: to prove diagnostic capabilities of modern radiation techniques in odontogenic maxillary sinusitis. Material and methods: The study involved 546 patients with sinusitis. The following methods have been used: X-ray of the paranasal sinuses, contrast maxillary sinus radiography, contact intraoral radiographs, orthopantomography, computer tomography and magnetic resonance imaging. Results. In 7,9% of cases the presence of odontogenic sinusitis has been established, in 92,1 % rhinoge...

  6. Ectopic third molar in the maxillary sinus

    OpenAIRE

    Mohan, Shishir; Kankariya, Hasti; Harjani, Bhupendra; Sharma, Harendra

    2011-01-01

    Ectopic eruption of teeth into a region other than the oral cavity is rare although there have been reports of teeth in the nasal septum, mandibular condyle, coronoid process, palate, chin and maxillary sinus. Occasionally, a tooth may erupt in the maxillary sinus and present with local sinonasal symptoms attributed to chronic sinusitis. We present a case of an ectopic maxillary third molar tooth that caused chronic purulent sinusitis in relation to the right maxillary sinus.

  7. 窦性心律的20例心电图分析%ECG Analysis of 20 Cases of Sinus

    Institute of Scientific and Technical Information of China (English)

    赵鑫

    2014-01-01

    Objective Analyzing the ECG data from 20 cases of sinus in order to provide exact information for clinical diagnosis and treatment. Methods Analyzing ECG data of 20 cases of sinus to summarize diagnosis experience and methods.Results With ECG analysis,there are 8 cases diagnosed as sinus,6 cases are sinus arrhythmia and other 6 cases are sinus tachycardia.Conclusion ECG is quite precise to examine and diagnose sinus arrhythmia,which is an indispensable method of clinical inspection.%目的:对20例窦性心律心电图资料进行分析,为临床诊断和治疗提供准确的依据。方法回顾分析20例窦性心律心电图资料,总结诊断经验和方法。结果所有研究对象经心电检查分析,证实窦性心律8例,窦性心律不齐6例,窦性心律过速6例。结论心电影像检查在窦性心律失常的诊断中准确率高,是临床检查必不可缺的手段之一。

  8. [Maxillary sinus carcinoma combined with maxillary sinus fungal sinusitis: one case report].

    Science.gov (United States)

    Peng, Zhenxing; Xu, Xianfa; Wei, Bojun

    2016-01-01

    A 70 years old male patient complained a sense of swelling on right facial, mild pain, and the obstruction of right nasal, no complain of facial numbness and toothache. Physical examination showed the slight bulging on right facial with mild tenderness, purulent nasal secretions on the right middle nasal meatus, and no significant neoplasm. CT scan showed that soft density tissue in the right maxillary sinus,and the high density tissue in some period. Postoperative diagnosis: carcinoma of maxillary sinus with fungal sinusitis.

  9. [Surgical dilemmas. Sinus floor elevation].

    Science.gov (United States)

    ten Bruggenkate, C M; Schulten, E A J M; Zijderveld, S A

    2008-12-01

    Limited alveolar bone height prevents the placement of dental implants. Sinus floor elevation is an internal augmentation of the maxillary sinus that allows implants to be placed. The principle of this surgical procedure is the preparation of a 'top hinge door', that is raised together with the Schneiderian membrane in the cranial direction. The space which created under this lid is filled with a bone transplant. Autogenous bone is the standard transplant material, despite the fact that a second surgery site is necessary. Under certain circumstances bone substitutes can be used, with a longer healing phase. If sufficient alveolar bone height is available to secure implant stability, simultaneous implantation and sinus floor elevation are possible. Considering the significant anatomical variation in the region of the maxillary sinus, a sound knowledge of the anatomy is of great importance.

  10. Sinus Balloon Dilation as Treatment for Acute Sphenoid Sinusitis with Impaired Vision for a Child

    Directory of Open Access Journals (Sweden)

    Yin Zhao

    2016-01-01

    Full Text Available This paper is about sinus balloon dilatation in treatment of acute left sphenoid sinusitis with left impaired vision in a child. Balloon catheter dilatation (BCD of the sinus ostia is a new technique. It has been shown to be a minimally invasive technique to manage chronic sinusitis. However, this method is rarely used in the treatment of acute sinusitis. So far, we know of no reported cases of sinus balloon dilatation in treatment of this case, especially for children.

  11. Displasia arritmogénica del ventrículo derecho y enfermedad del nódulo sinusal Arrhythmogenic right ventricular dysplasia and sick sinus syndrome

    Directory of Open Access Journals (Sweden)

    Domingo C. Balderramo

    2004-10-01

    Full Text Available La displasia arritmogénica del ventrículo derecho (DAVD compromete principalmente al ventrículo derecho y debe ser considerada en pacientes jóvenes que presentan síncope, taquicardia ventricular o paro cardíaco y en adultos con insuficiencia cardíaca congestiva. Las alteraciones eléctricas auriculares debidas a DAVD han sido poco descriptas. Informamos el caso de un varón de 60 años con DAVD que durante la evolución presentó enfermedad del nódulo sinusal (tiempo de recuperación del nódulo sinusal de 6113 mseg. Las arritmias auriculares se podrían explicar por el reemplazo gradual de los miocitos auriculares por tejido adiposo.Arrhythmogenic right ventricular dysplasia (ARVD involves primarily the right ventricle, and should be considered in young patients presenting with syncope, ventricular tachycardia, cardiac arrest or in adults patients with congestive heart failure. Atrial electrical abnormalities due to ARVD have been rarely described. We report a case of ARVD in a 60-year-old man who developed sick sinus syndrome during evolution (sinus node recovery time of 6113 mseg. Atrial arrhythmias may be explained by gradual replacement of right atrium myocytes by adipose tissue.

  12. The mechanism of KV4.3 voltage-gated potassium channel in arrhythmia induced by sleep deprivation in rat

    Directory of Open Access Journals (Sweden)

    Ya-jing ZHANG

    2011-03-01

    Full Text Available Objective To investigate the effect of sleep deprivation(SD on the changes in electrocardiogram and mRNA and protein expression of KV4.3 voltage-gated potassium channel in rats,and explore the related mechanisms of arrhythmia induced by SD.Methods A total of 48 adult male SD rats were randomly divided into 6 groups(8 each: normal control(CC group,tank control(TC group,1-,3-,5-and 7-day SD group.Animal model of SD was established by modified multiple platform method,and electrocardiogram was recorded on 1st,3rd,5th,and 7th of experiment.Protein and mRNA expressions of KV4.3 voltage-gated potassium channel were measured by real-time PCR and Western blotting analysis.Results The main changes on electrocardiogram following SD were arrhythmia.Compared with the CC group,rats in TC group showed sinus tachycardia in electrocardiogram: frequent atrial premature beats were observed one day after SD;ventricular arrhythmias,such as frequent polymorphic ventricular premature beats and paroxysmal ventricular tachycardia were observed three days after SD;incomplete right bundle branch block wave occurred five days after SD;the electrocardiogram showed third-degree atrioventricular(AV block wave seven days after SD,which indicated atrial arrhythmia and ventricular arrhythmia respectively.Ventricular escape beat,sinus arrest as well as the fusion of obviously elevated ST segment and T-wave were also observed.The expression levels of KV4.3 voltage-gated potassium channel decreased with prolongation of SD time.The expression of mRNA and protein of KV4.3 potassium channel in 7-day SD rats were only the one ninth and one fourth of levels in CC group.Conclusion Sleep deprivation can cause arrhythmia,and decreased expression of KV4.3 voltage-gated potassium channel may possibly be one of the reasons of arrhythmia induced by SD.

  13. Cerebral sinus venous thrombosis

    Directory of Open Access Journals (Sweden)

    Hernando Raphael Alvis-Miranda

    2013-01-01

    Full Text Available Cerebral sinus venous thrombosis (CSVT is a rare phenomenon that can be seen with some frequency in young patients. CSVT is a multifactorial condition with gender-related specific causes, with a wide clinical presentation, the leading causes differ between developed and developing countries, converting CSVT in a condition characterized by a highly variable clinical spectra, difficult diagnosis, variable etiologies and prognosis that requires fine medical skills and a high suspicious index. Patients who presents with CSVT should underwent to CT-scan venography (CVT and to the proper inquiry of the generating cause. This disease can affect the cerebral venous drainage and related anatomical structure. The symptoms may appear in relation to increased intracranial pressure imitating a pseudotumorcerebri. Prognosis depends on the early detection. Correcting the cause, generally the complications can be prevented. Mortality trends have diminished, and with the new technologies, surely it will continue. This work aims to review current knowledge about CSVT including its pathogenesis, etiology, clinical manifestations, diagnosis, and treatment.

  14. Cerebral sinus venous thrombosis

    Science.gov (United States)

    Alvis-Miranda, Hernando Raphael; Milena Castellar-Leones, Sandra; Alcala-Cerra, Gabriel; Rafael Moscote-Salazar, Luis

    2013-01-01

    Cerebral sinus venous thrombosis (CSVT) is a rare phenomenon that can be seen with some frequency in young patients. CSVT is a multifactorial condition with gender-related specific causes, with a wide clinical presentation, the leading causes differ between developed and developing countries, converting CSVT in a condition characterized by a highly variable clinical spectra, difficult diagnosis, variable etiologies and prognosis that requires fine medical skills and a high suspicious index. Patients who presents with CSVT should underwent to CT-scan venography (CVT) and to the proper inquiry of the generating cause. This disease can affect the cerebral venous drainage and related anatomical structure. The symptoms may appear in relation to increased intracranial pressure imitating a pseudotumorcerebri. Prognosis depends on the early detection. Correcting the cause, generally the complications can be prevented. Mortality trends have diminished, and with the new technologies, surely it will continue. This work aims to review current knowledge about CSVT including its pathogenesis, etiology, clinical manifestations, diagnosis, and treatment. PMID:24347950

  15. Arrhythmia and exercise intolerance in Fontan patients

    DEFF Research Database (Denmark)

    Idorn, L; Juul, K; Jensen, A S

    2013-01-01

    and estimated to 99.1% per year. Prevalence of clinically relevant arrhythmia and severe exercise intolerance increased significantly with age and was found in 32% and 85% of patients ≥20years, respectively. Thus, from survival data and logistic regression models the future prevalence of patients, clinically......, and blood sampling and medical history was retrieved from medical records. RESULTS: Twenty-six (11%) patients died or had heart transplantation (HTx) after a mean (±SD) post-Fontan follow-up of 8.3±5.7years. Excluding perioperative deaths (n=8), a linear probability of HTx-free survival was observed......BACKGROUND: Long-term survival after the Fontan procedure shows excellent results but is associated with a persistent risk of arrhythmias and exercise intolerance. We aimed to analyze the current burden of clinically relevant arrhythmia and severe exercise intolerance in Danish Fontan patients...

  16. Cardiac arrhythmias associated with spinal cord injury

    DEFF Research Database (Denmark)

    Hector, Sven Magnus; Biering-Sørensen, Tor; Krassioukov, Andrei;

    2013-01-01

    CONTEXT/OBJECTIVES: To review the current literature to reveal the incidence of cardiac arrhythmias and its relation to spinal cord injury (SCI). METHODS: Data source: MEDLINE database, 304 hits, and 32 articles were found to be relevant. The relevant articles all met the inclusion criteria: (1......) contained original data (2) on cardiac arrhythmias (3) in humans with (4) traumatic SCI. RESULTS: In the acute phase of SCI (1-14 days after injury) more cranial as well as more severe injuries seemed to increase the incidence of bradycardia. Articles not covering the first 14 days after injury, thus...... as during procedures such as penile vibro-stimulation and tracheal suction. These episodes of bradycardia were seen more often in individuals with cervical injuries. Longitudinal studies with continuous electrocardiogram recordings are needed to uncover the true relation between cardiac arrhythmias and SCI....

  17. Repolarization reserve, arrhythmia and new drug development

    Directory of Open Access Journals (Sweden)

    Yang Li

    2013-05-01

    Full Text Available Repolarization-related lethal arrhythmias have led to the concept of “repolarization reserve”, which may help elucidate the relationship between K+ currents and other components of repolarization. Pharmacological manipulation as well as congenital and cardiac disease may affect repolarization and alter the repolarization reserve, leading to the development of arrhythmias. Pharmacological enhancement of outward currents or suppression of inward currents has been shown to be of therapeutic value. A number of newly found selective ion channel inhibitors or agonists have been investigated for their ability to enhance repolarization reserve and decrease the incidence of arrhythmia. In this paper we review the development, potential mechanisms, clinical application, and pharmacological significance of repolarization reserve in order to better understand, predict and prevent unexplained adverse cardiac events.

  18. Sex determination using maxillary sinus

    Directory of Open Access Journals (Sweden)

    Ranjith Kumar Kanthem

    2015-01-01

    Full Text Available Background: Individual identification is a subtle concept and often one of the most important priorities in mass disasters, road accidents, air crashes, fires, and even in the investigation of criminal cases. Matching specific features detected on the cadaver with data recorded during the life of an individual is an important aspect in forensics, and can be performed by fingerprint analysis, deoxyribonucleic acid matching, anthropological methods, radiological methods and other techniques which can facilitate age and sex identification. Sinus radiography is one such method that has been used for determination of the sex of an individual. Hence, an attempt is being made to use the different dimensions of the maxillary sinus in the determination of sex using coronal and axial sections of plain computed tomography (CT scan. Materials and Methods: A total of 30 patients including 17 male and 13 female, visiting the Outpatient Department of the Mamata General Hospital were included as the study subjects. The dimensions of right and left maxillary sinuses of 30 subjects from plain CT were measured using SYNGO software and statistical analysis was done. Results: Sex determination using height, length, width, and volume of the maxillary sinus on both sides showed statistically significant results with a higher percentage of sexual dimorphism in the case of volume. Conclusion: Volume of the right maxillary sinus can be used as accurate diagnostic parameter for sex determination.

  19. The relationship between respiratory sinus arrhythmia and heart rate during anesthesia in rat

    DEFF Research Database (Denmark)

    Moldovan, M; Spulber, S; Saravan, V

    2004-01-01

    rats, slowing of HR is associated with an increase in HF. The aim of this study was to investigate whether this relationship between HF and HR is preserved during anesthesia in rat. A 15 minutes long ECG signal was recorded from rats (N=15) under moderate chloral hydrate (CHL) anesthesia. Recordings......) the decrease in HR that occurs during CHL anesthesia in rat correlates with an increase in RSA; (2) atropine reduces RSA and the time-dependent decrease in HR; (3) the time-dependent increase in RSA is preserved after atropine. We conclude that the correlation between RSA and HR reflects the cardio...

  20. Respiratory Sinus Arrhythmia Moderates the Relation between Parent-Adolescent Relationship Quality and Adolescents' Social Adjustment.

    Science.gov (United States)

    Van der Graaff, Jolien; Meeus, Wim; de Wied, Minet; van Boxtel, Anton; van Lier, Pol; Branje, Susan

    2016-02-01

    This 2-wave longitudinal study aimed (1) to investigate whether high resting RSA predicted adolescents' lower externalizing behavior and higher empathic concern, and (2) to address the potential moderating role of resting RSA in the association between parent-adolescent relationship quality and adolescents' externalizing behavior and empathic concern. In a sample of 379 adolescents (212 boys, 167 girls), resting RSA was assessed during a laboratory session, and adolescents reported on parental support, negative interaction with parents, empathic concern and externalizing behavior during a home visit. We found no support for high resting RSA predicting low externalizing behavior or high empathic concern. However, in line with our hypotheses, we did find several instances of RSA functioning as a moderator, although the interaction patterns varied. First, negative interaction with parents was a negative predictor of externalizing behavior for girls low in resting RSA, whereas the association was non-significant for girls with high RSA. Second, higher negative interaction with parents predicted lower empathic concern for boys high in resting RSA, whereas the association was reversed for boys with low resting RSA. Third, parental support was a positive predictor of empathic concern for girls high in resting RSA, whereas the association was non-significant for girls low in resting RSA. The findings suggest that adolescents with different levels of resting RSA respond differentially to relationship quality with parents.

  1. Arrhythmias in viral myocarditis and pericarditis.

    Science.gov (United States)

    Baksi, A John; Kanaganayagam, G Sunthar; Prasad, Sanjay K

    2015-06-01

    Acute viral myocarditis and acute pericarditis are self-limiting conditions that run a benign course and that may not involve symptoms that lead to medical assessment. However, ventricular arrhythmia is frequent in viral myocarditis. Myocarditis is thought to account for a large proportion of sudden cardiac deaths in young people without prior structural heart disease. Identification of acute myocarditis either with or without pericarditis is therefore important. However, therapeutic interventions are limited and nonspecific. Identifying those at greatest risk of a life-threatening arrhythmia is critical to reducing the mortality. This review summarizes current understanding of this challenging area in which many questions remain.

  2. Pharmacogenetics of drug-induced arrhythmias

    DEFF Research Database (Denmark)

    De Bruin, Marie L; van Puijenbroek, Eugene P; Bracke, Madelon

    2006-01-01

    of a spontaneous reporting system for ADRs, using drug-induced arrhythmias as an example. METHODS: Reports of drug-induced arrhythmias to proarrhythmic drugs were selected from the database of the Netherlands Pharmacovigilance Centre (1996-2003). Information on the patient's general practitioner (GP) was obtained...... were screened for 10 missense mutations in 5 genes associated with the congenital long-QT (LQT) syndrome (KCNQ1, KCNH2, SCN5A, KCNE1, KCNE2). RESULTS: We identified 45 eligible cases, 29 GPs could be contacted of which seven were willing to participate. Four cases and five matched controls could...

  3. [Effect of anti-arrhythmia drugs on mouse arrhythmia induced by Bufonis Venenum].

    Science.gov (United States)

    Lu, Wen-juan; Zhou, Jing; Ma, Hong-yue; Lü, Gao-hong; You, Fen-qiang; Ding, An-wei; Duan, Jin-ao

    2011-10-01

    This study is to investigate the effects of phenytoin sodium, lidocaine (sodium channel blockers), propranolol (beta-adrenergic receptor antagonist), amiodarone (drugs prolonging the action potential duration) and verapamil (calcium channel blockers) on arrhythmia of mice induced by Bufonis Venenum (Chansu) and isolated mouse hearts lethal dose of Chansu. Arrhythmia of mice were induced by Chansu and then electrocardiograms (ECGs) were recorded. The changes of P-R interval, QRS complex, Q-T interval, T wave amplitude, heart rate (HR) were observed. Moreover, arrhythmia rate, survival rate and arrhythmia score were counted. Isolated mouse hearts were prefused, and the lethal dose of Chansu was recorded. Compared with control group, after pretreatment with phenytoin sodium, broadening of QRS complex and HR were inhibited, and the incidence of ventricular arrhythmia was reduced dramatically, while survival rate was improved; the isolated mouse hearts lethal dose of Chansu was increased significantly. After pretreatment with lidocaine, the prolongation of P-R interval and broadening of QRS complex were inhibited, and the incidences of ventricular arrhythmia were reduced dramatically, while survival rate was improved; the isolated mouse hearts lethal dose of Chansu was increased significantly. After pretreatment with propranolol, prolongation of P-R interval, broadening of QRS complex, prolongation of Q-T interval and HR were inhibited, and the incidences of both supraventricular and ventricular arrhythmias were reduced dramatically, while survival rate was improved. After pretreatment with amiodarone, HR was inhibited, the incidences of ventricular tachycardia were reduced dramatically. Lastly, after pretreatment with verapamil, the prolongation of P-R interval and Q-T interval were inhibited and the incidences of both supraventricular and ventricular arrhythmias were reduced dramatically; the isolated mouse hearts lethal dose of Chansu was reduced significantly. In in

  4. Noninvasive diagnostic mapping of supraventricular arrhythmias (Wolf-Parkinson-White syndrome and atrial arrhythmias).

    Science.gov (United States)

    Cakulev, Ivan; Sahadevan, Jayakumar; Waldo, Albert L

    2015-03-01

    The 12-lead electrocardiogram has limited value in precisely identifying the origin of focal or critical component of reentrant arrhythmias during supraventricular arrhythmias, as well as precisely locating accessory atrioventricular conduction pathways. Because of these limitations, efforts have been made to reconstruct epicardial activation sequences from body surface measurements obtained noninvasively. The last decade has registered significant progress in obtaining clinically useful data from the attempts to noninvasively map the epicardial electrical activity. This article summarizes the recent advances made in this area, specifically addressing the clinical outcomes of such efforts relating to atrial arrhythmias and Wolf-Parkinson-White syndrome.

  5. Anatomy of the carotid sinus nerve and surgical implications in carotid sinus syndrome

    NARCIS (Netherlands)

    Toorop, Raechel J.; Scheltinga, Marc R.; Moll, Frans L.; Bleys, Ronald L.

    2009-01-01

    Background: The carotid sinus syndrome (CSS) is characterized by syncope and hypotension due to a hypersensitive carotid sinus located in the carotid bifurcation. Some patients ultimately require surgical sinus denervation, possibly by transection of its afferent nerve (carotid sinus nerve [CSN]). T

  6. Unexpected location of pilonidal sinuses.

    Science.gov (United States)

    Sion-Vardy, N; Osyntsov, L; Cagnano, E; Osyntsov, A; Vardy, D; Benharroch, D

    2009-12-01

    Pilonidal sinuses usually occur in the sacrococcygeal area in young men, and occasionally can be found in other ectopic sites. We present a retrospective case review on unusual locations of pilonidal sinuses in the past 4 years. The lesion sites were as follows: one on the penis, two on the scalp, two on the abdomen, one on the neck, two in the groin and two in the axilla. Abdominal and penile lesions are uncommon, but the other locations reported are unusually rare. To our knowledge, the groin has not been reported previously as a site of a pilonidal sinus, although the histological appearance of hidradenitis suppurativa may well resemble it. When trying to clarify the pathogenesis of these occurrences, we found that recurrent hair removal was a common characteristic of the patients we contacted, and this may have been the initiating trauma.

  7. Osteoblastoma of the ethmoid sinus

    Energy Technology Data Exchange (ETDEWEB)

    Park, Yong-Koo [Kyung Hee University, Department of Pathology, School of Medicine, Seoul (Korea); Kyung Hee University Hospital, Department of Pathology, Seoul (Korea); Kim, Eui Jong [Kyung Hee University, Department of Diagnostic Radiology, School of Medicine, Seoul (Korea); Kim, Sung Wan [Kyung Hee University, Department of Otolaryngology, School of Medicine, Seoul (Korea)

    2007-05-15

    An osteoblastoma is a benign bone tumor that most often occurs in the vertebral column and the long bones of the extremities. Paranasal sinus involvement is very rare. We report an osteoblastoma of the ethmoid sinus in a 13-year-old boy who presented with exophthalmos. CT demonstrated an expansile, lesion of the right ethmoid sinus, which caused the orbital contents to be compressed and deviated to the right. A mixture of ground glass opacity and dense bone was present. The less dense portions of the lesion showed intense enhancement on MRI; a signal void was present on all sequences in the densely sclerotic areas. Curettage was performed. Histologically, the lesion was composed of proliferating osteoblasts along with small trabeculae of woven bone and rich vascular fibrous stroma. The literature concerning occurrence of osteoblastoma in this unusual location is reviewed and discussed. (orig.)

  8. Isolated cardiac involvement in primary amyloidosis: presenting as sick sinus syndrome and heart failure.

    Science.gov (United States)

    Pattanshetty, Deepak J; Bhat, Pradeep K; Chamberlain, Wendy A; Lyons, Matthew R

    2013-01-01

    Cardiac amyloidosis is an infiltrative cardiomyopathy with a grave prognosis. Its clinical manifestations include restrictive cardiomyopathy, diastolic heart failure, conduction defects, and arrhythmias. Isolated cardiac involvement and significant conduction disturbances are reported very infrequently. We report a rare case of isolated cardiac involvement in primary amyloidosis, in a 76-year-old man who initially presented with sick sinus syndrome that necessitated permanent pacemaker insertion. Subsequent symptoms of heart failure led to additional evaluation, including an endomyocardial biopsy that revealed primary cardiac amyloidosis. Medical therapy improved the patient's symptoms, and he was discharged from the hospital in stable condition. In addition to discussing the patient's case, we review the relevant medical literature.

  9. Sick sinus syndrome: a family study.

    Science.gov (United States)

    Rogińska, Natalia; Bieganowska, Katarzyna

    2014-02-01

    A case of related individuals affected by sick sinus syndrome is presented in this study. The clinical and electrocardiographic signs of sinus node dysfunction and the most common causes of this disease are presented. Subsequently, the article includes descriptions of sinus node disease in three related children as well as details of the disease in their relatives. A literature review of the genetics of familial sinus node dysfunction concludes the study.

  10. Clinical Features and Treatments of Odontogenic Sinusitis

    OpenAIRE

    Lee, Kyung Chul; Lee, Sung Jin

    2010-01-01

    Purpose The aim of this study was to investigate how clinical features such as sex, age, etiologic factors, and presenting symptoms of odontogenic sinusitis are differentiated from other types of sinusitis. Also, this study was designed to find methods for reducing the incidence of odontogenic sinusitis. Materials and Methods A retrospective chart analysis was completed on twenty-seven patients with odontogenic sinusitis. They were all treated at Kangbuk Samsung Hospital between February 2006...

  11. Sudden Hemianopsia Secondary to Ethmoid Sinus Mucocele

    Directory of Open Access Journals (Sweden)

    Morganti, Ligia

    2014-01-01

    Full Text Available Paranasal sinus mucoceles are benign cystic lesions, filled with mucus, occurring due to an obstruction of involved sinus ostium. They are indolent, locally expansive, and destructive. Surgical treatment must be performed and, when done at the correct time, may prevent sequelae. We present a case of ethmoid sinus mucocele with orbit involvement and permanent optical nerve injury.

  12. A vertical approach to cardiac arrhythmias.

    Science.gov (United States)

    Vaughan Williams, E M

    1987-10-01

    Study of cardiac arrhythmia may be pursued vertically, as up the rungs of a ladder, from symptom to ECG, to EPS, to local lesion, to intracellular metabolism and to alterations of the latter and their effects on charge-transfer by ions across the cell membrane. Raised intracellular cAMP and calcium concentrations are responses to normal physiological controls, and highly abnormal ECGs occur in normal people under stress without progressing to life threatening arrhythmias, yet do so in susceptible individuals. Conversely, appropriate stimulation can precipitate ventricular fibrillation in normal myocardium. Selective stimulation of different types of adrenoceptor has differing electrophysiological effects. Beta 1-adrenoceptors increase contraction and calcium current, and shorten action potential duration (APD) by increasing potassium conductance. Beta 2-adrenoceptors do not increase calcium entry, but shorten APD by stimulating electrogenic Na/K pumping, alpha-adrenoceptors prolong contractions and lengthen APD. It is suggested that the tachycardia, extrasystoles and shortening of APD occurring in response to adrenergic stimuli and hypoxia, are accessory factors, not primary causes, in the development of arrhythmias, and constitute a danger when there is an appropriate anatomical substrate for re-entry. Serious arrhythmias are of multifactorial origin, of which "calcium overload" is but one, not proven to be a frequent one.

  13. Cardiac arrhythmias in adult patients with asthma

    DEFF Research Database (Denmark)

    Warnier, Miriam J; Rutten, Frans H; Kors, Jan A;

    2012-01-01

    OBJECTIVE: The pathogenesis of cardiac arrhythmias in asthma patients has not been fully elucidated. Adverse drug effects, particularly those of β2-mimetics, may play a role. The aim of this study was to determine whether asthma is associated with the risk of cardiac arrhythmias and electrocardio......OBJECTIVE: The pathogenesis of cardiac arrhythmias in asthma patients has not been fully elucidated. Adverse drug effects, particularly those of β2-mimetics, may play a role. The aim of this study was to determine whether asthma is associated with the risk of cardiac arrhythmias...... and electrocardiographic characteristics of arrhythmogenicity (ECG) and to explore the role of β2-mimetics. METHODS: A cross-sectional study was conducted among 158 adult patients with a diagnosis of asthma and 6303 participants without asthma from the cohort of the Utrecht Health Project-an ongoing, longitudinal, primary...... or flutter). Secondary outcomes were tachycardia, bradycardia, PVC, atrial fibrillation or flutter, mean heart rate, mean corrected QT (QTc) interval length, and prolonged QTc interval. RESULTS: Tachycardia and PVCs were more prevalent in patients with asthma (3% and 4%, respectively) than those without...

  14. Risk of arrhythmia induced by psychotropic medications

    DEFF Research Database (Denmark)

    Fanoe, Søren; Kristensen, Diana; Fink-Jensen, Anders

    2014-01-01

    of patients are treated with psychotropics. In subgroups of pre-disposed patients, e.g. patients with cardiac diseases or other co-morbidities, the elderly or patients treated with other negatively interacting drugs, the absolute risk of drug-induced arrhythmia may be considerable. On the other hand, several...

  15. Morphometric study of maxillary sinus by computed tomography. Assessment of sinus floor bone reconstruction

    OpenAIRE

    2012-01-01

    Rehabilitation with dental implants in posterior maxilla is difficult because of the presence of maxillary sinus with anatomical variations. The aim of this research was to evaluate the sinus volume to install one or more implants without invading the sinus membrane. Forty (40) maxillary sinuses were evaluated in 22 skulls by computed tomography measuring in the axial, coronal and sagittal slice. The sinus were classified according to the remaining alveolar bone and a dental implant in the pl...

  16. Bacterial colonization or infection in chronic sinusitis.

    Science.gov (United States)

    Pandak, Nenad; Pajić-Penavić, Ivana; Sekelj, Alen; Tomić-Paradžik, Maja; Cabraja, Ivica; Miklaušić, Božana

    2011-12-01

    The aim of this study was the determination of bacteria present in maxillary and ethmoid cavities in patients with chronic sinusitis and to correlate these findings with bacteria simultaneously present in their nasopharynx. The purpose of this correlation was to establish the role of bacteria found in chronically inflamed sinuses and to evaluate if the bacteria present colonized or infected sinus mucosa. Nasopharyngeal and sinus swabs of 65 patients that underwent functional endoscopic sinus surgery were cultivated and at the same time the presence of leukocytes were determined in each swab. The most frequently found bacteria in nasopharynx were Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus spp., Streptococcus viridans and Streptococcus pneumoniae. Maxillary or ethmoidal sinus swabs yielded bacterial growth in 47 (72.31%) patients. The most frequently found bacteria in sinuses were Staphylococcus epidermidis, Staphylococcus aureus, Klebsiella spp. and Streptococci (pneumoniae, viridans and spp.). The insignificant number of leukocytes was present in each sinus and nasopharyngeal swab. Every published microbiology study of chronic sinusitis proved that sinus mucosa were colonized with bacteria and not infected, yet antibiotic therapy was discussed making no difference between infection and colonization. Chronic sinusitis should be considered a chronic inflammatory condition rather than bacterial infection, so routine antibiotic therapy should be avoided. Empiric antibiotic therapy should be prescribed only in cases when the acute exacerbation of chronic sinusitis occurs and the antibiotics prescribed should aim the usual bacteria causing acute sinusitis. In case of therapy failure, antibiotics should be changed having in mind that under certain circumstances any bacteria colonizing sinus mucosa can cause acute exacerbation of chronic sinusitis.

  17. Systemic corticosteroids for acute sinusitis

    NARCIS (Netherlands)

    Venekamp, R.P.; Thompson, M.J.; Hayward, G.; Heneghan, C.J.; Mar, C.B. Del; Perera, R.; Glasziou, P.P.; Rovers, M.M.

    2014-01-01

    BACKGROUND: Acute sinusitis is the inflammation and swelling of the nasal and paranasal mucous membranes and is a common reason for patients to seek primary care consultations. The related impairment of daily functioning and quality of life is attributable to symptoms such as facial pain and nasal c

  18. Cavernous Sinus Thrombosis in Children

    Directory of Open Access Journals (Sweden)

    Rochelle Sweis

    2016-03-01

    Full Text Available Investigators from the Children’s Hospital of Philadelphia analyzed the clinical and radiographic findings in 12 cases of cavernous sinus thrombosis (CST seen between 2000 and 2013, and conducted a literature search and review of the pooled data.

  19. Unusual ocular manifestations of silent sinus syndrome

    Directory of Open Access Journals (Sweden)

    Fabricio Lopes da Fonseca

    2014-01-01

    Full Text Available Silent sinus syndrome is an acquired condition in which there is a gradual collapse of the orbital floor and inward retraction of the maxillary sinus (atelectasis of the maxillary sinus. This in turn may cause associated ocular occurrences of enophthalmos and hypotropia. This is a report of an 8 year-old boy with silent sinus syndrome and associated ocular motility disorders. The association between silent sinus syndrome and ocular motility disturbance has been recently described in the literature. However, this is an infrequent association, mainly in childhood.

  20. Cardiac Arrhythmias and Abnormal Electrocardiograms After Acute Stroke.

    Science.gov (United States)

    Ruthirago, Doungporn; Julayanont, Parunyou; Tantrachoti, Pakpoom; Kim, Jongyeol; Nugent, Kenneth

    2016-01-01

    Cardiac arrhythmias and electrocardiogram (ECG) abnormalities occur frequently but are often underrecognized after strokes. Acute ischemic and hemorrhagic strokes in some particular area of brain can disrupt central autonomic control of the heart, precipitating cardiac arrhythmias, ECG abnormalities, myocardial injury and sometimes sudden death. Identification of high-risk patients after acute stroke is important to arrange appropriate cardiac monitoring and effective management of arrhythmias, and to prevent cardiac morbidity and mortality. More studies are needed to better clarify pathogenesis, localization of areas associated with arrhythmias and practical management of arrhythmias and abnormal ECGs after acute stroke.

  1. Percutaneous autonomic neural modulation: A novel technique to treat cardiac arrhythmia

    Energy Technology Data Exchange (ETDEWEB)

    DeSimone, Christopher V.; Madhavan, Malini [Cardiovascular Diseases, Department of Medicine, Mayo Clinic, Rochester, MN (United States); Venkatachalam, Kalpathi L. [Cardiovascular Diseases, Department of Medicine, Mayo Clinic, Jacksonville, FL (United States); Knudson, Mark B. [Mayo Clinic, Rochester, MN (United States); EnteroMedics, EnteroMedics, St. Paul, MN (United States); Asirvatham, Samuel J., E-mail: asirvatham.samuel@mayo.edu [Cardiovascular Diseases, Department of Medicine, Mayo Clinic, Rochester, MN (United States); Pediatric Cardiology, Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, MN (United States)

    2013-05-15

    Ablation and anti-arrhythmic medications have shown promise but have been met with varying success and unwanted side effects such as myocardial injury, arrhythmias, and morbidity from invasive surgical intervention. The answer to improving efficacy of ablation may include modulation of the cardiac aspect of the autonomic nervous system. Our lab has developed a novel approach and device to navigate the oblique sinus and to use DC current and saline/alcohol irrigation to selectively stimulate and block the autonomic ganglia found on the epicardial side of the heart. This novel approach minimizes myocardial damage from thermal injury and provides a less invasive and targeted approach. For feasibility, proof-of-concept, and safety monitoring, we carried out canine studies to test this novel application. Our results suggest a safer and less invasive way of modulating arrhythmogenic substrate that may lead to improved treatment of AF in humans.

  2. 小儿心律失常71例临床分析%Clinical Analysis of 71 Cases of Pediatric Arrhythmias

    Institute of Scientific and Technical Information of China (English)

    田晓媛

    2015-01-01

    Objective To study the clinical characteristics of pediatric cardiac arrhythmias.Methods Choose 71 patients with pediatric cardiac arrhythmias in our hospital then sorting and analyzing the data.ResultsThe pediatric arrhythmia occurrence concerned with toxic myocarditis,rheumatic fever and rheumatic heart disease. 71 cases of arrhythmia in patients with sinus arrhythmia,52 cases,15 cases of ectopic arrhythmias conduction disorders three type,4 cases by symptomatic treatment,63 cases cured,7 cases lesson,1 had no effect,the total effective rate was 98.59%.Conclusion Pediatric arrhythmia causes pure,according to the different causes for targeted treatment,the prognosis is good.%目的:探讨小儿心律失常的临床特点。方法选择我院小儿心律失常患者71例,对其资料进行整理和分析。结果小儿心律失常发生与中毒性心肌炎、风湿热、风湿性心脏病等疾病有关。71例患者的心律失常分窦性心律失常52例,异位心律失常15例,传导失常4例三个类型,经对症治疗,痊愈63例,减轻7例,无效1例,总有效率98.59%。结论小儿心律失常病因单纯,根据不同病因进行针对性治疗,预后较好。

  3. [Odontogenic maxillary sinusitis caused by dental restoration].

    Science.gov (United States)

    Sato, Kiminori

    2014-06-01

    We report herein on 5 patients with odontogenic maxillary sinusitis caused by a dental restoration (caries cutting, cavity preparation, inlay restoration). Odontogenic maxillary sinusitis was noted following dental restoration. Even though the pulp cavity and dental pulp were intact, the odontogenic maxillary sinusitis occurred caused by an apical lesion. Infection by way of the dentinal tubules was suggested to be a cause of the pathophysiology. Endoscopic sinus surgery was indicated in patients with intractable odontogenic maxillary sinusitis caused by the dental restoration. Cone-beam x-ray CT was useful for the accurate diagnosis of odontogenic maxillary sinusitis caused by a dental restoration. Physicians should thus be aware of the possibility that a tooth, which has undergone dental restoration, may cause odontogenic maxillary sinusitis.

  4. Robotic magnetic navigation for ablation of human arrhythmias

    Science.gov (United States)

    Da Costa, Antoine; Guichard, Jean Baptiste; Roméyer-Bouchard, Cécile; Gerbay, Antoine; Isaaz, Karl

    2016-01-01

    Radiofrequency treatment represents the first choice of treatment for arrhythmias, in particular complex arrhythmias and especially atrial fibrillation, due to the greater benefit/risk ratio compared to antiarrhythmic drugs. However, complex arrhythmias such as atrial fibrillation require long procedures with additional risks such as X-ray exposure or serious complications such as tamponade. Given this context, the treatment of arrhythmias using robotic magnetic navigation entails a technique well suited to complex arrhythmias on account of its efficacy, reliability, significant reduction in X-ray exposure for both patient and operator, as well as a very low risk of perforation. As ongoing developments will likely improve results and procedure times, this technology will become one of the most modern technologies for treating arrhythmias. Based on the literature, this review summarizes the advantages and limitations of robotic magnetic navigation for ablation of human arrhythmias. PMID:27698569

  5. Anatomical aspects of sinus floor elevations.

    Science.gov (United States)

    van den Bergh, J P; ten Bruggenkate, C M; Disch, F J; Tuinzing, D B

    2000-06-01

    Inadequate bone height in the lateral part of the maxilla forms a contra-indication for implant surgery. This condition can be treated with an internal augmentation of the maxillary sinus floor. This sinus floor elevation, formerly called sinus lifting, consists of a surgical procedure in which a top hinge door in the lateral maxillary sinus wall is prepared and internally rotated to a horizontal position. The new elevated sinus floor, together with the inner maxillary mucosa, will create a space that can be filled with graft material. Sinus lift procedures depend greatly on fragile structures and anatomical variations. The variety of anatomical modalities in shape of the inner aspect of the maxillary sinus defines the surgical approach. Conditions such as sinus floor convolutions, sinus septum, transient mucosa swelling and narrow sinus may form a (usually relative) contra-indication for sinus floor elevation. Absolute contra-indications are maxillary sinus diseases (tumors) and destructive former sinus surgery (like the Caldwell-Luc operation). The lateral sinus wall is usually a thin bone plate, which is easily penetrated with rotating or sharp instruments. The fragile Schneiderian membrane plays an important role for the containment of the bonegraft. The surgical procedure of preparing the trap door and luxating it, together with the preparation of the sinus mucosa, may cause a mucosa tear. Usually, when these perforations are not too large, they will fold together when turning the trap door inward and upward, or they can be glued with a fibrin sealant, or they can be covered with a resorbable membrane. If the perforation is too large, a cortico-spongious block graft can be considered. However, in most cases the sinus floor elevation will be deleted. Perforations may also occur due to irregularities in the sinus floor or even due to immediate contact of sinus mucosa with oral mucosa. Obstruction of the antro-nasal foramen is, due to its high location, not a

  6. Relationship between development of accessory maxillary sinus and chronic sinusitis

    Directory of Open Access Journals (Sweden)

    Caner Sahin

    2015-01-01

    Full Text Available Background: We aimed to investigate whether there is a relationship between development of accessory maxillary osmium (AMO and chronic sinusitis. Material and Methods: A total of 100 patients who had endoscopic sinus surgery for chronic rhinosinusitis (CRS constituted the study group while 100 patients who had septoplasty were taken as the control group. The patients were examined for the presence of AMO using rigid endoscope. Results: The prevalence of AMO was 14% in the rhinosinusitis group and 9% in the control group. The difference between the groups was statistically significant (P < 0.05. Conclusion: Our study revealed that AMO prevalence is significantly higher in patients with CRS when compared with the controls. CRS may enhance perforation of fontanelle and formation of AMO.

  7. [Maxillary sinus malformations (double wall bone) lead to chronic sinusitis in a case].

    Science.gov (United States)

    Pang, Chaofu; Gu, Feng; Fang, Yingqi

    2014-09-01

    Chronic rhinosinusitis is a common otorhinolaryngological disease, although the incidence of chronic sinusitis is the result of many factors, the local anatomic abnormalities is one of the most important reasons. When maxillary sinus dysplasia that sinus cavity becomes small. These was some sinus cavity partial or complete bony septum malformation used to be reported occasionally, according to reports in the literature of this malformation rate is below 2%, bony divides sinus cavity is divided into 2 to 3 independent lacunar deformity are very rare, next we will introduce a case of sinus cavity that been divided into double deck by bone wall.

  8. Non-invasive Mapping of Cardiac Arrhythmias.

    Science.gov (United States)

    Shah, Ashok; Hocini, Meleze; Haissaguerre, Michel; Jaïs, Pierre

    2015-08-01

    Since more than 100 years, 12-lead electrocardiography (ECG) is the standard-of-care tool, which involves measuring electrical potentials from limited sites on the body surface to diagnose cardiac disorder, its possible mechanism, and the likely site of origin. Several decades of research has led to the development of a 252-lead ECG and computed tomography (CT) scan-based three-dimensional electro-imaging modality to non-invasively map abnormal cardiac rhythms including fibrillation. These maps provide guidance towards ablative therapy and thereby help advance the management of complex heart rhythm disorders. Here, we describe the clinical experience obtained using non-invasive technique in mapping the electrical disorder and guide the catheter ablation of atrial arrhythmias (premature atrial beat, atrial tachycardia, atrial fibrillation), ventricular arrhythmias (premature ventricular beats), and ventricular pre-excitation (Wolff-Parkinson-White syndrome).

  9. Frequency of the odontogenic maxillary sinusitis extended to the anterior ethmoid sinus and response to surgical treatment

    OpenAIRE

    Crovetto Martínez, Rafael; Martin Arregui, Francisco Javier; Zabala López de Maturana, Aitor; Tudela Cabello, Kiara; Crovetto de la Torre, Miguel Angel

    2014-01-01

    Objectives: Odontogenic sinusitis usually affects the maxillary sinus but may extend to the anterior ethmoid sinuses. The purpose of this study is to determine the percentage of odontogenic maxillary sinusitis extended to the anterior ethmoid sinuses and determine also the surgical resolution differences between odontogenic maxillary sinusitis and odontogenic maxillary associated to anterior ethmoidal sinusitis. Study Design: This is a retrospective cohort study performed on 55 patients diagn...

  10. Rapidly detecting disorder in rhythmic biological signals: a spectral entropy measure to identify cardiac arrhythmias

    CERN Document Server

    Staniczenko, Phillip P A; Jones, Nick S

    2008-01-01

    We consider the use of a running measure of power spectrum disorder to distinguish between the normal sinus rhythm of the heart and two forms of cardiac arrhythmia: atrial fibrillation and atrial flutter. This is motivated by characteristic differences in the spectra of beats during the three rhythms. We plot patient data derived from 10-beat windows on a `disorder map' and identify rhythm-defining ranges in the level and variance of spectral entropy values. Employing the spectral entropy within an automatic arrhythmia detection algorithm enables the classification of periods of atrial fibrillation from the time series of patients' beats. When the algorithm is set to identify abnormal rhythms within 6s it agrees with 85.7% of the annotations of professional rhythm assessors; for a response time of 30s this becomes 89.5%, and with 60s it is 90.3%. The algorithm provides a rapid way to detect atrial fibrillation, demonstrating usable response times as low as six seconds. Measures of disorder in the frequency do...

  11. Cardiac autonomic nerve distribution and arrhythmia

    Institute of Scientific and Technical Information of China (English)

    Quan Liu; Dongmei Chen; Yonggang Wang; Xin Zhao; Yang Zheng

    2012-01-01

    OBJECTIVE: To analyze the distribution characteristics of cardiac autonomic nerves and to explore the correlation between cardiac autonomic nerve distribution and arrhythmia.DATA RETRIEVAL: A computer-based retrieval was performed for papers examining the distribution of cardiac autonomic nerves, using "heart, autonomic nerve, sympathetic nerve, vagus nerve, nerve distribution, rhythm and atrial fibrillation" as the key words.SELECTION CRITERIA: A total of 165 studies examining the distribution of cardiac autonomic nerve were screened, and 46 of them were eventually included.MAIN OUTCOME MEASURES: The distribution and characteristics of cardiac autonomic nerves were observed, and immunohistochemical staining was applied to determine the levels of tyrosine hydroxylase and acetylcholine transferase (main markers of cardiac autonomic nerve distribution). In addition, the correlation between cardiac autonomic nerve distribution and cardiac arrhythmia was investigated.RESULTS: Cardiac autonomic nerves were reported to exhibit a disordered distribution in different sites, mainly at the surface of the cardiac atrium and pulmonary vein, forming a ganglia plexus. The distribution of the pulmonary vein autonomic nerve was prominent at the proximal end rather than the distal end, at the upper left rather than the lower right, at the epicardial membrane rather than the endocardial membrane, at the left atrium rather than the right atrium, and at the posterior wall rather than the anterior wall. The main markers used for cardiac autonomic nerves were tyrosine hydroxylase and acetylcholine transferase. Protein gene product 9.5 was used to label the immunoreactive nerve distribution, and the distribution density of autonomic nerves was determined using a computer-aided morphometric analysis system.CONCLUSION: The uneven distribution of the cardiac autonomic nerves is the leading cause of the occurrence of arrhythmia, and the cardiac autonomic nerves play an important role in the

  12. [Big osteoma of ethmoid sinus].

    Science.gov (United States)

    Peng, Ping

    2014-04-01

    Sinus osteoma is a common nasal and sinus disease, while the clinical cases of osteoma with a diameter greater than 30 millimeter are rarely seen. This paper reports a case of a 39-years-old male patient discovered with one-year long swelling pain in the right eye. The patients' right eye was mildly prominent and he suffered from hypopsia and diplopia. After CT scanned, he have ethmoid osteoma been discovered, besides, the right media rectus compression and orbital apex compression and consequent pathologically were diagnosed. The solid tumor ranged widely from the anterior skull base to the superior and interior orbital walls,and thus deprived the patient's complete surgical resection. As an attempt to prevent complications, most parts of the tumors were sur gically removed.

  13. Preauricular sinus: When to operate?

    Directory of Open Access Journals (Sweden)

    Anuj Kumar Goel

    2011-01-01

    Full Text Available Purpose: Experiences with preauricular sinus (PAS excision in pediatric age group. Materials and Methods: A retrospective analysis of 110 patients who underwent PAS excision was done. A total of 112 excisions (63 left, 49 right were performed by standard surgical technique. All the patients were operated upon in an infection-free period under general anesthesia. Results: A total of 32 excisions had bad surgical results in the form of bad scar or recurrence, out of which 28 had history of symptomatic sinus infection preoperatively. Conclusions: Surgical excision of PAS should be done in quiescent phase; once infected, it becomes very difficult to eradicate the infection and also the chances of bad surgical results (bad scar or recurrence increase manifold.

  14. ETHMOIDAL SINUSITIS WITH PRESEPTAL ABSCESS: A CASE REPORT

    Directory of Open Access Journals (Sweden)

    Vikramjit

    2014-08-01

    Full Text Available Complications of sinusitis are rare nowadays because of higher and broad spectrum antibiotics. Preseptal abscess may rarely present as a complication of sinusitis. Our patient presented with a preseptal abscess with underlying ethmoidal sinusitis. The patient was treated with antibiotics; Incision and drainage of the preseptal abscess were done and infection in the ethmoidal sinuses was eradicated by endoscopic sinus surgery

  15. Identifying potential functional impact of mutations and polymorphisms: Linking heart failure, increased risk of arrhythmias and sudden cardiac death.

    Directory of Open Access Journals (Sweden)

    BENOIT eJAGU

    2013-09-01

    Full Text Available Researchers and clinicians have discovered several important concepts regarding the mechanisms responsible for increased risk of arrhythmias, heart failure and sudden cardiac death. One major step in defining the molecular basis of normal and abnormal cardiac electrical behaviour has been the identification of single mutations that greatly increase the risk for arrhythmias and sudden cardiac death by changing channel-gating characteristics. Indeed, mutations in several genes encoding ion channels, such as SCN5A, which encodes the major cardiac Na+ channel, have emerged as the basis for a variety of inherited cardiac arrhythmias such as long QT syndrome, Brugada syndrome, progressive cardiac conduction disorder, sinus node dysfunction or sudden infant death syndrome. In addition, genes encoding ion channel accessory proteins, like anchoring or chaperone proteins, which modify the expression, the regulation of endocytosis and the degradation of ion channel α-subunits have also been reported as susceptibility genes for arrhythmic syndromes. The regulation of ion channel protein expression also depends on a fine-tuned balance among different other mechanisms, such as gene transcription, RNA processing, post-transcriptional control of gene expression by miRNA, protein synthesis, assembly and post-translational modification and trafficking.

  16. Late recovery from foreign body sinusitis after maxillary sinus floor augmentation.

    Science.gov (United States)

    Felisati, Giovanni; Saibene, Alberto Maria; Lenzi, Riccardo; Pipolo, Carlotta

    2012-12-12

    A 55-year-old male patient was referred to our clinic with signs and symptoms of recurring sinusitis after a right maxillary sinus floor augmentation for implantological purposes. Investigations showed an antibiotic-resistant ethmoidomaxillary sinusitis resulting from bone graft infection and displacement of previously inserted xenograft material into the maxillary sinus. The patient thus underwent a surgical procedure combining nasal endoscopy and oral surgery in order to remove the infected graft and restore sinusal drainage. The procedure was apparently successful but sinusitis relapsed after surgery and persisted despite 2 weeks of antibiotic therapy and local medications. A CT scan showed persistence of grafting fragments in the maxillary sinus. A new surgical procedure was scheduled while a more accurate endoscopic local medication was performed. Six hours after the treatment, the patient spontaneously expelled the fragments and promptly recovered. The patient successfully underwent another maxillary sinus floor augmentation procedure 6 months later.

  17. Giant osteoma of the ethmoidal sinus

    Directory of Open Access Journals (Sweden)

    Marambaia, Otavio

    2009-06-01

    Full Text Available Introduction: The osteomas are osseous lesions with slow and asymptomatic growth that most of the times is a finding in radiological exams requested for other reason. It's the most common benign neoplasm of the paranasal sinuses. The osteomas are located mainly in the frontal sinus (57% to 80%, followed by the ethmoidal sinuses (20%, maxillary sinuses and rarely in the sphenoid sinus. It has a discreet predominance in the male sex 1.5 and its incidence is higher in the 3rd and 4th decades of life. The treatment is surgical no matter the size. Objective: To describe a case of giant osteoma of the ethmoidal sinus including a brief literature review. Case Report: JDA, male, 33 years old, presented with a right constant nasal obstruction for 01 year. Upon exam, he presented with facial asymmetry with lateralization of the right ocular globe. The computed tomography of the paranasal sinuses showed a lesion with density of soft parts occupying partially the right nasal cavity, ethmoid sinus and right maxillary. The patient was submitted to surgery with full exeresis of the lesion. The anatomopathological exam confirmed osteoma. The patient evolved without evidences of the lesion recurrence. Final Comments: The osteomas in the ethmoidal sinus, irrespectively of the size and due to the risk of complications, must be operated.

  18. Secondary silent sinus syndrome:case report

    Institute of Scientific and Technical Information of China (English)

    王绪锐; 赵小冬

    2004-01-01

    @@ Silent sinus syndrome (SSS) is characterized by spontaneous and progressive unilateral enophthalmos with no other symptoms. Maxillary sinus atelectasis displayed on CT will be helpful for clinical diagnosis. The operation for better maxillary sinus ventilation shows good therapeutic effects and prognosis. In 1964, Montgometry1 described the first case of patient whose enophthalmos was caused by mucocele of the maxillary sinus. Since then, all otolaryngologists have taken more and more attention to this syndrome. And by June 2000, a total of 45 cases had been reported worldwide.

  19. [Update on Current Care Guideline: Sinusitis].

    Science.gov (United States)

    Hytönen, Maija; Nokso-Koivisto, Johanna; Huovinen, Pentti; Ilkko, Eero; Jousimaa, Jukkapekka; Kivistö, Juho; Korppi, Matti; Liira, Helena; Malmivaara, Antti; Numminen, Jura; Pirilä, Tapio

    2013-01-01

    Patients with common cold have often symptoms similar to sinusitis. These symptoms often resolve in time, but symptomatic treatment (e.g. analgesics, decongestants) may be used. If symptoms continue for over 10 days, or severe symptoms continue for over 3 days, or symptoms turn worse in the course of the disease, bacterial sinusitis should be suspected. Diagnosis is based on clinical findings, and can be confirmed with ultrasound examination. Amoxicillin, penicillin or doxicyclin are recommended for bacterial sinusitis. Patients with chronic or recurrent sinusitis should be referred to specialist care.

  20. Odontogenic maxillary sinusitis obscured by midfacial trauma.

    Science.gov (United States)

    Simuntis, Regimantas; Kubilius, Ričardas; Ryškienė, Silvija; Vaitkus, Saulius

    2015-01-01

    We present a case of odontogenic maxillary sinusitis whose sinonasal symptomatology was thought to be the consequence of a previous midfacial trauma. The patient was admitted to the Clinic of Oral and Maxillofacial Surgery after more than 10 years of exacerbations of sinonasal symptoms, which began to plague soon after a facial contusion. We decided to perform CT of paranasal sinuses, and despite the absence dental symptomatology, the dental origin of sinusitis was discovered. The majority of sinonasal symptoms resolved after appropriate dental treatment, and there was no need for nasal or sinus surgery.

  1. Treating Sinusitis: Don't Rush to Antibiotics

    Science.gov (United States)

    ... AAAAI) Treating Sinusitis (AAAAI) Don’t rush to antibiotics DOWNLOAD PDF The sinuses are small, hollow spaces ... or teeth. Each year, millions of people use antibiotic drugs to treat sinus problems. However, they usually ...

  2. Sphenoidal fungal sinusitis with intracranial extension An interesting Case Report

    Directory of Open Access Journals (Sweden)

    Balasubramanian Thiagarajan

    2013-08-01

    Full Text Available Isolated sphenoid sinusitis is rather rare. Fungal sinusitis is common in immunocompromised patients. In this case report the authors describe an immunocompetent patient with isolated sphenoid fungal sinusitis with intracranial extension with a review of published literature.Unfavorable location and poor ventilation have been attributed as the probable factors involved in isolated sphenoid sinusitis. Considering the location of sphenoid sinus (close to skull base, optic nerve and great vessels infections involving this sinus is fraught with dangerous complications.

  3. Cardiac Arrhythmia Classification by Wavelet Transform

    Directory of Open Access Journals (Sweden)

    Hadji Salah

    2015-05-01

    Full Text Available Cardiovascular diseases are the major public health parameter; they are the leading causes of mortality in the world. In fact many studies have been implemented to reduce the risk, including promoting education, prevention, and monitoring of patients at risk. In this paper we propose to develop classification system heartbeats. This system is based mainly on Wavelet Transform to extract features and Kohonen self-organization map the arrhythmias are considered in this study: N,(Normal, V(PrematureVentricular, A(AtrialPremature, S(Extrasystolesupraventriculaire, F(FusionN+S, R(RightBundle Branch.

  4. CT of the paranasal sinuses is not a valid indicator for sinus surgery in CF patients

    DEFF Research Database (Denmark)

    Rasmussen, Jacob; Aanæs, Kasper; Norling, Rikke;

    2012-01-01

    BACKGROUND: No guidelines comprise when or to what extent sinus surgery should be done in patients with cystic fibrosis (CF) or how a CT scan of the paranasal sinuses should influence the decision. Symptoms of rhinosinusitis and/or eradication of pathogenic bacteria from the sinuses are reasons......: There was no significant correlation between the CT score and detection of pus, pathogenic bacteria or symptoms. Pus and pathogenic bacteria were found in several cases without sinus opacification on the CT scan. Non pathogenic and sterile cultures were also found in sinuses with opacification. CONCLUSIONS: A CT scan...

  5. Reproducibility and diagnostic value of E100 event recorder for patients with complains on heart arrhythmias and no changes on multiple routine ECGs and 24-hour holter monitoring.

    Science.gov (United States)

    Rekhviashvili, A; Baganashvili, E; Tan, K Y; Raymakers, F; Sakandelidze, Ts

    2012-02-01

    Aim of the study was to assess reproducibility and diagnostic value of E100 event recorder for patients with complains on heart arrhythmias and no abnormalities on multiple routine ECGs and/or 24-hour Holter ECG monitoring and the second one, an assessment of adherence and attitude of patients to the E100 event recorder, dependent on the results of self- assessment questionnaires. 24 patients with complains on heart arrhythmias were included in the study. All the patients were provided with the REKA E100 event monitors for 5 ± 2 days and self-assessment questionnaires to assess level of adherence and attitude of patients to the E100 event recorder. E100 event recorders revealed junctional rhythm (n=2), AV nodal reentrant tachycardia (n=2), extrasystolic arrhythmias (n=10), atrial fibrillation (n=2), WPW syndrome (n=4), ventricular tachycardia (n=1), sinus tachycardia (n=7) and complete AV block (n=1). Majority of patients consider device as easy to use, comfortable and safe. In comparison with multiple routine ECGs and 24-hour Holter ECG monitoring, E100 event recorders showed higher reproducibility and efficacy for detecting and interpreting heart arrhythmias.

  6. Effect of sodium nitrite on ischaemia and reperfusion-induced arrhythmias in anaesthetized dogs: is protein S-nitrosylation involved?

    Directory of Open Access Journals (Sweden)

    Mária Kovács

    Full Text Available To provide evidence for the protective role of inorganic nitrite against acute ischaemia and reperfusion-induced ventricular arrhythmias in a large animal model.Dogs, anaesthetized with chloralose and urethane, were administered intravenously with sodium nitrite (0.2 µmol kg(-1 min(-1 in two protocols. In protocol 1 nitrite was infused 10 min prior to and during a 25 min occlusion of the left anterior descending (LAD coronary artery (NaNO2-PO; n = 14, whereas in protocol 2 the infusion was started 10 min prior to reperfusion of the occluded vessel (NaNO2-PR; n = 12. Control dogs (n = 15 were infused with saline and subjected to the same period of ischaemia and reperfusion. Severities of ischaemia and ventricular arrhythmias, as well as changes in plasma nitrate/nitrite (NOx levels in the coronary sinus blood, were assessed throughout the experiment. Myocardial superoxide and nitrotyrosine (NT levels were determined during reperfusion. Changes in protein S-nitrosylation (SNO and S-glutathionylation were also examined.Compared with controls, sodium nitrite administered either pre-occlusion or pre-reperfusion markedly suppressed the number and severity of ventricular arrhythmias during occlusion and increased survival (0% vs. 50 and 92% upon reperfusion. There were also significant decreases in superoxide and NT levels in the nitrite treated dogs. Compared with controls, increased SNO was found only in NaNO2-PR dogs, whereas S-glutathionylation occurred primarily in NaNO2-PO dogs.Intravenous infusion of nitrite profoundly reduced the severity of ventricular arrhythmias resulting from acute ischaemia and reperfusion in anaesthetized dogs. This effect, among several others, may result from an NO-mediated reduction in oxidative stress, perhaps through protein SNO and/or S-glutathionylation.

  7. Novel ECG-Synchronized Pulsatile ECLS System With Various Heart Rates and Cardiac Arrhythmias: An In Vitro Study.

    Science.gov (United States)

    Wang, Shigang; Spencer, Shannon B; Kunselman, Allen R; Ündar, Akif

    2017-01-01

    The objective of this study is to evaluate electrocardiography (ECG)-synchronized pulsatile flow under varying heart rates and different atrial and ventricular arrhythmias in a simulated extracorporeal life support (ECLS) system. The ECLS circuit consisted of an i-cor diagonal pump and console, an iLA membrane ventilator, and an 18 Fr arterial cannula. The circuit was primed with lactated Ringer's solution and packed red blood cells (hematocrit 35%). An ECG simulator was used to trigger pulsatile flow and to generate selected cardiac rhythms. All trials were conducted at a flow rate of 2.5 L/min at room temperature for normal sinus rhythm at 45-180 bpm under non-pulsatile and pulsatile modes. Various atrial and ventricular arrhythmias were also tested. Real-time pressure and flow data were recorded using a custom-based data acquisition system. The energy equivalent pressure (EEP) generated by pulsatile flow was always higher than the mean pressure. No surplus hemodynamic energy (SHE) was recorded under non-pulsatile mode. Under pulsatile mode, SHE levels increased with increasing heart rates (45-120 bpm). SHE levels under a 1:2 assist ratio were higher than the 1:1 and 1:3 assist ratios with a heart rate of 180 bpm. A similar trend was recorded for total hemodynamic energy levels. There was no statistical difference between the two perfusion modes with regards to pressure drops across the ECLS circuit. The main resistance and energy loss came from the arterial cannula. The i-cor console successfully tracked electrocardiographic signals of 12 atrial and ventricular arrhythmias. Our results demonstrated that the i-cor pulsatile ECLS system can be synchronized with a normal heart rate or with various atrial/ventricular arrhythmias. Further in vivo studies are warranted to confirm our findings.

  8. Role of Osteoplastic Frontal Sinus Obliteration in the Era of Endoscopic Sinus Surgery

    Directory of Open Access Journals (Sweden)

    Joshua B. Silverman

    2012-01-01

    Full Text Available Objective. Determining the indications for osteoplastic frontal sinus obliteration (OFSO for the treatment of inflammatory frontal sinus disease. Study Design. Retrospective case series from a single tertiary care facility. Methods. Thirty-four patients who underwent OFSO for chronic frontal sinusitis ( and frontal sinus mucocele ( comprised our study group. Data reviewed included demographics, history of prior frontal sinus operation(s, imaging, diagnosis, and operative complications. Results. The age range was 19 to 76 years. Seventy percent of patients with chronic frontal sinusitis underwent OFSO as a salvage surgery after previous frontal sinus surgery failures, while 30% underwent OFSO as a primary surgery. For those in whom OFSO was a salvage procedure, the failed surgeries were endoscopic approaches to the frontal sinus (69%, Lynch procedure (12%, and OFSO outside this study period (19%. For patients with frontal sinus mucocele, 72% had OFSO as a first-line surgery. Within the total study population, 15% of patients presented for OFSO with history of prior obliteration, with a range of 3 to 30 years between representations. Conclusions. Osteoplastic frontal sinus obliteration remains a key surgical treatment for chronic inflammatory frontal sinus disease both as a salvage procedure and first-line surgical therapy.

  9. Histoplasma capsulatum sinusitis: case report and review.

    Science.gov (United States)

    Alves, Marcelle D; Pinheiro, Lia; Manica, Denise; Fogliatto, Laura M; Fraga, Christina; Goldani, Luciano Z

    2011-01-01

    Histoplasma capsulatum has not typically been associated with sinusitis in either immunocompetent or immunocompromised hosts. We report a case of sinusitis caused by H. capsulatum in a patient with chronic lymphocytic leukemia and discuss the reported cases of this rare clinical manifestation of histoplasmosis in the medical literature.

  10. GENETIC PREDICTORS OF IDIOPATHIC SICK SINUS SYNDROME

    Directory of Open Access Journals (Sweden)

    A. A. Chernova

    2012-01-01

    Full Text Available Published data demonstrating genetic determination of sick sinus syndrome is presented. The definition of this pathology is presented; the main symptoms are described, as well as genes that influence the development of idiopathic sick sinus syndrome, their polymorphisms and role in disorders of the cardiovascular system.

  11. Heart-brain interactions in cardiac arrhythmia.

    Science.gov (United States)

    Taggart, P; Critchley, H; Lambiase, P D

    2011-05-01

    This review examines current knowledge of the effects of higher brain centres and autonomic control loops on the heart with particular relevance to arrhythmogenesis. There is now substantial evidence that higher brain function (cortex), the brain stem and autonomic nerves affect cardiac electrophysiology and arrhythmia, and that these may function as an interactive system. The roles of mental stress and emotion in arrhythmogenesis and sudden cardiac death are no longer confined to the realms of anecdote. Advances in molecular cardiology have identified cardiac cellular ion channel mutations conferring vulnerability to arrhythmic death at the myocardial level. Indeed, specific channelopathies such as long QT syndrome and Brugada syndrome are selectively sensitive to either sympathetic or vagal stimulation. There is increasing evidence that afferent feedback from the heart to the higher centres may affect efferent input to the heart and modulate the cardiac electrophysiology. The new era of functional neuroimaging has identified the central neural circuitry in this brain-heart axis. Since precipitants of sudden fatal arrhythmia are frequently environmental and behavioural, central pathways translating stress into autonomic effects on the heart might be considered as therapeutic targets. These brain-heart interactions help explain the apparent randomness of sudden cardiac events and provide new insights into future novel therapies to prevent sudden death.

  12. Cancer chemotherapy and cardiac arrhythmias: a review.

    Science.gov (United States)

    Tamargo, Juan; Caballero, Ricardo; Delpón, Eva

    2015-02-01

    Cardiovascular toxicity is a potential complication of cancer chemotherapy (CC) that increases the morbidity and mortality of cancer patients. Cardiac arrhythmias have been reported as an adverse effect of many chemotherapeutic drugs, including novel targeted therapies. The relationship between chemotherapy and arrhythmias has not been well-established and the proarrhythmogenic mechanisms remain uncertain as they can be the result of a direct electrophysiological effect or of changes in cardiac structure and function, including myocardial ischaemia and heart failure, which create an arrhythmogenic substrate. In this review we summarise available evidence of proarrhythmia induced by CC, discuss the possible mechanisms involved in this adverse effect and emphasise the importance of cardiac monitoring for the early diagnosis, intervention and surveillance of those patients more susceptible to develop proarrhythmia in an attempt to reduce the morbidity and mortality. Oncologists should be fully aware of proarrhythmia and the close collaboration between cardiologists and oncologists would result in a better cardiovascular assessment, risk stratification, cardiac monitoring and treatment during CC and during the follow-up. The final objective is to understand the mechanisms of proarrhythmia and evaluate its real incidence and clinical relevance so as to select the safest and most effective treatment for cancer patients.

  13. Almanac 2013: cardiac arrhythmias and pacing.

    Science.gov (United States)

    Liew, Reginald

    2013-10-01

    Important advances have been made in the past few years in the fields of clinical cardiac electrophysiology and pacing. Researchers and clinicians have a greater understanding of the pathophysiological mechanisms underlying atrial fibrillation (AF), which has transpired into improved methods of detection, risk stratification, and treatments. The introduction of novel oral anticoagulants has provided clinicians with alternative options in managing patients with AF at moderate to high thromboembolic risk and further data has been emerging on the use of catheter ablation for the treatment of symptomatic AF. Another area of intense research in the field of cardiac arrhythmias and pacing is in the use of cardiac resynchronisation therapy (CRT) for the treatment of patients with heart failure. Following the publication of major landmark randomised controlled trials reporting that CRT confers a survival advantage in patients with severe heart failure and improves symptoms, many subsequent studies have been performed to further refine the selection of patients for CRT and determine the clinical characteristics associated with a favourable response. The field of sudden cardiac death and implantable cardioverter defibrillators also continues to be actively researched, with important new epidemiological and clinical data emerging on improved methods for patient selection, risk stratification, and management. This review covers the major recent advances in these areas related to cardiac arrhythmias and pacing.

  14. Genetics of inherited primary arrhythmia disorders

    Directory of Open Access Journals (Sweden)

    Spears DA

    2015-09-01

    Full Text Available Danna A Spears, Michael H Gollob Division of Cardiology – Electrophysiology, University Health Network, Toronto General Hospital, Toronto, ON, Canada Abstract: A sudden unexplained death is felt to be due to a primary arrhythmic disorder when no structural heart disease is found on autopsy, and there is no preceding documentation of heart disease. In these cases, death is presumed to be secondary to a lethal and potentially heritable abnormality of cardiac ion channel function. These channelopathies include congenital long QT syndrome, catecholaminergic polymorphic ventricular tachycardia, Brugada syndrome, and short QT syndrome. In certain cases, genetic testing may have an important role in supporting a diagnosis of a primary arrhythmia disorder, and can also provide prognostic information, but by far the greatest strength of genetic testing lies in the screening of family members, who may be at risk. The purpose of this review is to describe the basic genetic and molecular pathophysiology of the primary inherited arrhythmia disorders, and to outline a rational approach to genetic testing, management, and family screening. Keywords: long QT syndrome, catecholaminergic polymorphic ventricular tachycardia, Brugada syndrome, short QT syndrome, genetics

  15. Genetic aspects of sick sinus syndrome

    Directory of Open Access Journals (Sweden)

    Chernova A.A.

    2013-03-01

    consistent with that of the genotypes of the above genes in the general population of primary sick sinus syndrome patients. The allelic variants of the above genes were not found to be associated with ompensated sick sinus syndrome. Conclusion. The genetic predictors of idiopathic sick sinus syndrome are heterozygous genotypes 44 GA and 4a/4b genes Cx 40 and NOS3 as well as homozygous genotypes in rare allele DD and GG genes ADRA2B and SCN5A. Polymorphic allelic variant 2161C > T (Arg721Trp of MYH6 gene was not revealed in the examined cohort of Krasnoyarsk population. The distribution of the genotypes of the investigated genes in latent sick sinus syndrome patients was found to be consistent with that of the genotypes in the general population of primary sick sinus syndrome patients.

  16. Intra-sinusal third molar: Case report

    Directory of Open Access Journals (Sweden)

    Frederico Sampaio Neves

    2011-01-01

    Full Text Available Ectopic tooth eruption into an area other than the oral cavity is rare. Nasal septum, mandibular condyle, coronoid process and infratemporal fossa space have been reported as frequent locations for ectopic tooth eruption. Ectopic teeth located within the maxillary sinus may be asymptomatic, found only in routine examinations. Headache, sinusitis and nasal obstruction are some of the associated symptoms. The differential diagnosis includes foreign bodies (rhinolith, infections (syphilis and tuberculosis, benign lesions (hemangioma, osteoma, calcifi ed polyp and malign lesions (osteosarcoma. Upper third molars located within the maxillary sinus may be associated with the development of mucocele or dentigerous cyst. The aim of this paper was to describe the case of a 24-year old female patient with an ectopic right upper third molar in the maxillary sinus. A hyperdense area was observed with sinus obliteration, consistent with mucous material.

  17. Tooth in Ethmoid Sinus: A Case Report

    Directory of Open Access Journals (Sweden)

    Tayebe Kazemei

    2009-09-01

    Full Text Available Ectopic eruption of teeth occurs in a variety of locations.Commonly seen in palate and maxillary sinus, they have alsobeen reported in nasal cavity, orbit, mandibular condyle,coronoid process, and facial skin.Here, we report a rare case of recurrent sinusitis caused byectopic tooth in right ethmoid sinus and successful endoscopicremoval of it. The symptoms of the patient disappeared aftersurgery. Such case has not been yet reported in the Englishliterature.Ectopic tooth is an uncommon cause of sinusitis. It shouldbe considered in patients presenting with recurrent sinusitis unresponsiveto medical treatment. Computed tomography of thesinuses is the modality of choice for diagnosis. Endoscopic sinussurgery is the best method for management of such cases.

  18. Atrial Arrhythmias and Their Implications for Space Flight - Introduction

    Science.gov (United States)

    Polk, J. D.; Barr, Y. R.; Bauer, P.; Hamilton, D. R.; Kerstman, E.; Tarver, B.

    2010-01-01

    This panel will discuss the implications of atrial arrhythmias in astronauts from a variety of perspectives; including historical data, current practices, and future challenges for exploration class missions. The panelists will present case histories, outline the evolution of current NASA medical standards for atrial arrhythmias, discuss the use of predictive tools, and consider potential challenges for current and future missions.

  19. Cardiac arrhythmias in hypokalemic periodic paralysis: Hypokalemia as only cause?

    NARCIS (Netherlands)

    Stunnenberg, B.C.; Deinum, J.; Links, T.P.; Wilde, A.A.; Franssen, H.; Drost, G.

    2014-01-01

    It is unknown how often cardiac arrhythmias occur in hypokalemic periodic paralysis (HypoPP) and if they are caused by hypokalemia alone or other factors. This systematic review shows that cardiac arrhythmias were reported in 27 HypoPP patients. Cases were confirmed genetically (13 with an R528H mut

  20. CARDIAC ARRHYTHMIAS IN HYPOKALEMIC PERIODIC PARALYSIS : HYPOKALEMIA AS ONLY CAUSE?

    NARCIS (Netherlands)

    Stunnenberg, Bas C.; Deinum, Jaap; Links, Thera P.; Wilde, Arthur A.; Franssen, Hessel; Drost, Gea

    2014-01-01

    It is unknown how often cardiac arrhythmias occur in hypokalemic periodic paralysis (HypoPP) and if they are caused by hypokalemia alone or other factors. This systematic review shows that cardiac arrhythmias were reported in 27 HypoPP patients. Cases were confirmed genetically (13 with an R528H mut

  1. Comparative study between original and traditional method in establishing a chronic sinus node damage model in rabbit.

    Science.gov (United States)

    Liu, Ru-xiu; Wang, Yan-li; Li, Hui-bo; Wang, Ni-na; Bao, Mei-jing; Xu, Li-ya

    2012-12-01

    Sick Sinus Syndrome is a common and refractory arrhythmia, needing further study in which setting up a credible sinus node damage model is important. To explore the feasibility and superiority of an original formaldehyde pinpoint pressing permeation (FPPP) method for building a chronic sinus node damage (CSND) model, 5 rabbits were chosen from 35 as a sham-operation group, and the remaining were randomly divided into two groups: the formaldehyde wet compressing (FWC) group, in which models were established by applying a cotton bud dipped in 20% formaldehyde onto the sinus node (SN) area, and the FPPP group, in which models were established by injecting formaldehyde into the SN area through a self-made pinpointing and injecting electrode. We found that in both groups, the HR at 2 h, 24 h, 1 wk, and 2 wk after modeling decreased compared with premodeling; sinoatrial conduction time, sinus node recovery time, and corrected sinus node recovery time were prolonged compared with premodeling. The indexes mentioned shortened by 2 wk after modeling compared with 2 h in the FWC group, whereas they were stable after modeling in the FPPP group. The modeling achievement ratio in the FPPP group was higher and the death rate was lower. Under light microscope, paraffin sections of the SN tissue and cells showed severe injury in both groups. The results indicate that the CSND models in rabbits can be successfully established by the FPPP method, with higher achievement ratio, lower death rate, better stabilization effect, and less damaging comparing with the traditional method.

  2. [Electrical cardioversion in the treatment of cardiac arrhythmias during pregnancy--case report and review of literature].

    Science.gov (United States)

    Gałczyński, Krzysztof; Marciniak, Beata; Kudlicki, Janusz; Kimber-Trojnar, Zaneta; Leszczyńska-Gorzelak, Bozena; Oleszczukz, Jan

    2013-10-01

    The incidence of cardiac arrhythmias is estimated et 1.2 per 1000 pregnancies, usually in the third trimester and 50% of them are asymptomatic. They may appear for the first time in pregnancy or have a recurring character An important risk factor related to their appearance is the presence of structural heart disease, which complicates arrhythmias may require urgent, life-saving procedures. External electrical cardioversion is associated with the application of certain amount of energy via two electrodes placed on the thorax. It is used to treat hemodynamically unstable supraventricular tachycardias, including atrial fibrillation and atrial flutter Also in hemodynamically stable patients in whom drug therapy was ineffective elective electrical cardioversion can be use to convert cardiac arrhythmia to sinus rhythm. We present a case of a 33 years old patient with congenital heart disease surgically corrected in childhood who had first incident of atrial flutter in pregnancy. Arrhytmia occured in 26th week of gestation. The patient was hemodynamically stable and did not approve electrical cardioversion as a method of treatment therefore pharmacotherapy was started. Heart rate was controled with metoprolol and digoxin, warfarin was used to anticoagulation. Calcium and potassium were also given. Described therapy did not convert atrial flutter to sinus rhythm therefore in 33rd week of gestation after patient's approval electrical cardioversion was performed. Before cardioversion transesophageal echocardiogram was made to exclude the presence of thrombus inside atria. Energy of 50J was applied and sinus rhythm was restored. Cardiotocography during and after cardioversion did not show any significant fetal heart rate changes. Further pregnancy and puerperium were uneventful. Case report and review of the literature about cardiac arrhytmias and methods of its treatment especially in pregnant women. Analysis of medical documentation of the patient treated in the Department

  3. Arrhythmia in Acute Right Ventricular Infarction

    Directory of Open Access Journals (Sweden)

    Azin Alizadeh Asl

    2007-09-01

    Full Text Available Acute inferior myocardial infarction (MI frequently involves the right ventricle (RV.1-3 We assessed the prognostic impact of RV myocardial involvement in patients with inferior MI. One hundred seventy patients were admitted to the cardiac care unit of Madani Heart Hospital (Tabriz-Iran with the diagnosis of inferior MI with (group1 or without (group2 the simultaneous involvement of RV during the study period (from 2005 to 2006. Patients presenting within 12h of symptom onset were eligible for inclusion. Patients with simultaneous anterior wall MI or renal impairment (creatinine > 2 mg/dl, as well as those undergoing primary percutaneous translational coronary angioplasty, were excluded. Eighty eight percent of the patients with RVMI and 75% of those with isolated inferior MI had some type of arrhythmia. Atrioventricular (AV block occurred in 42% of the infarctions with RV involvement and only in 29% of the control group. Intra-ventricular conduction disturbance (IVCD was also more frequent in RVMI (29.4% vs. 13.1%, p=0.021, especially right bundle branch block (RBBB (20% vs. 7.4%, P=0.003. There was, however, no meaningful difference in the incidence of left bundle branch block (LBBB between the two groups (3.5% vs. 2.35%, P=0.95. Ventricular fibrillation (VF was observed in 5.2% and 1.2% and ventricular tachycardia in 26% and 12.2% of the patients in groups 1 and 2, respectively. In 27% of patients with RVMI, it was necessary to implant a pacemaker as compared to 10% of those in the control group. Mortality was higher in the patients with inferior infarction extended to the RV (15.3% vs. 3.5%, P= 0.0001. Thus, the differences between the findings in the two groups in terms of the occurrence of post-MI arrhythmias and conduction disorders were quite significant, but there was no meaningful difference with respect to the incidence of LBBB between the two groups. Additionally, patients with inferior MI who also had RV myocardial involvement were

  4. Fungal Involvement in Patients with Paranasal Sinusitis

    Directory of Open Access Journals (Sweden)

    P Kordbacheh

    2004-08-01

    Full Text Available Fungal involvement of the paranasal sinuses is frequently observed in the immunocompromised host and it can become lifethreatening if it is not diagnosed. Definitive diagnosis is made by tissue biopsy and culture. In this study biopsy materials of maxillary, ethmoidal and frontal sinuses of 60 patients with clinical manifestation of sinusitis and no response to medical therapy were assessed by mycological and pathological methods for the presence of fungi. Invasive fungal sinusitis was diagnosed in 3 patients and etiologic agents were Candida albicans, Rhizopus sp. and Aspergillus fumigatus. Predisposing factors in these patients were leukemia, diabetes mellitus and previous sinus and polyp surgery, respectively. Allergic fungal sinusitis also was seen in one patient and Alternaria sp. isolated from the biopsy material. Only the patient with allergic form of disease survived but all the patients with invasive form of fungal infection were expired. This clearly underscores the need of early recognition of fungal sinusitis in at risk population in order to start urgent treatment. In this study Nocardia asteroids also was isolated from the biopsy sample in a patient with sinunasal adenocarcinoma.

  5. Nonlinear-dynamical arrhythmia control in humans.

    Science.gov (United States)

    Christini, D J; Stein, K M; Markowitz, S M; Mittal, S; Slotwiner, D J; Scheiner, M A; Iwai, S; Lerman, B B

    2001-05-08

    Nonlinear-dynamical control techniques, also known as chaos control, have been used with great success to control a wide range of physical systems. Such techniques have been used to control the behavior of in vitro excitable biological tissue, suggesting their potential for clinical utility. However, the feasibility of using such techniques to control physiological processes has not been demonstrated in humans. Here we show that nonlinear-dynamical control can modulate human cardiac electrophysiological dynamics by rapidly stabilizing an unstable target rhythm. Specifically, in 52/54 control attempts in five patients, we successfully terminated pacing-induced period-2 atrioventricular-nodal conduction alternans by stabilizing the underlying unstable steady-state conduction. This proof-of-concept demonstration shows that nonlinear-dynamical control techniques are clinically feasible and provides a foundation for developing such techniques for more complex forms of clinical arrhythmia.

  6. Clinical Analysis of Chronic Cor Pulmonale Complicating Arrhythmia%慢性肺源性心脏病并发心律失常临床分析

    Institute of Scientific and Technical Information of China (English)

    徐桂华; 夏辉

    2012-01-01

    Objective: To analyse the clinical features of chronic cor pulmonale complicating arrhythmi-a. Method: 158 cases patients treated in our hospital with chronic cor pulmonale, including arrhythmia group of 97 patients, non - arrhythmia group of 61 patients, They were griven conventional treatment, observed the type of arrhythmia and two groups were compared the incidence of concurrent symptoms. Result: The most common type of chronic cor pulmonale complicating arrhythmia is mainly sinus tachycardia ( 42. 27% ) and atrial premature beats ( 32.99% ); Pulmonary infection, heart failure, hypoxia, electrolyte imbalance were 100% , 44. 33% , 60. 82% , 73. 20% in arrhythmia group and 85. 25% ,18. 03% , 36. 07% , 52.46% in non-arrhythmia group. There's significant difference, P<0.01. Conclusion: Chronic cor pulmonale complicating arrhythmia occurs with age , infection, hypoxia, electrolyte imbalance , heart failure and other factors, timely appropriate treatment can effectively reduce the mortality.%目的:分析慢性肺源性心脏病并发心律失常的临床特征.方法:将我院治疗的慢性肺心病患者158例,其中心律失常组97例,非心律失常组61例,给予常规治疗,观察心律失常的类型,比较两组并发症状发生情况.结果:肺源性心脏病并发心律失常最常见的类型主要为窦性心动过速(42.27%)及房性早搏(32.99%);心律失常组并发肺部感染、心力衰竭、缺氧、电解质紊乱分别为100%、44.33%、60.82%、73.20%,与非心律失常组85.25%、18.03%、36.07%、52.46%比较,有统计学差异,P<0.01.结论:肺源性心脏病并发心律失常的发生与年龄、感染、缺氧、电解质紊乱、心力衰竭等因素有关,及时给予相应的治疗能够有效地降低病死率.

  7. Current concepts on complications associated with sinus augmentation procedures

    NARCIS (Netherlands)

    Boffano, P.; Forouzanfar, T.

    2014-01-01

    The sinus augmentation, or sinus lift procedure, is an internal augmentation of the maxillary sinus, which is intended to increase the vertical bony dimension in the lateral maxilla to make the placement of dental implants possible. Complication rate associated with maxillary sinus augmentation proc

  8. [Compound odontoma as a cause of chronic maxillary sinusitis].

    Science.gov (United States)

    Crespo Del Hierro, Jorge; Ruiz González, Manuel; Delgado Portela, Margarita; García Del Castillo, Eduardo; Crespo Serrano, Juan

    2008-01-01

    Sinusitis of dental origin is a relatively frequent entity, but the presence of an odontoma in the sinus as a source of this pathology is exceptional. Here we present a case of a young patient who presented chronic maxillary sinusitis over 2 years, originating in an odontoma located in the sinus drainage area.

  9. Association between maxillary sinus pathologies and healthy teeth

    Directory of Open Access Journals (Sweden)

    Gina D. Roque-Torres

    2016-02-01

    Full Text Available ABSTRACT INTRODUCTION: The proximity of the roots to the maxillary sinus can create a variety of risks. OBJECTIVE: To evaluate the relationship between the roots of healthy teeth and the maxillary sinus, as well as the occurrence of sinus pathologies. METHODS: Three radiologists analyzed 109 cone beam computed tomography (CBCT images. The Kappa test was used to assess the intra- and inter-rater agreement. The chi-squared test and prevalence ratio were used to test the hypothesis that roots of healthy teeth in the maxillary sinus favored the occurrence of sinus pathologies ( p = 0.01. RESULTS: Intra- and inter-rater agreement ranged from good to excellent. The chi-squared test demonstrated a statistically significant difference ( p = 0.006 between the tooth roots in diseased maxillary sinuses (6.09% and those in normal sinuses (3.43%. The prevalence ratio test showed a statistically significant higher prevalence of tooth roots in diseased sinuses than in normal sinuses ( p < 0.0001. Roots in the maxillary sinus were 1.82 times more associated with diseased sinuses. CONCLUSION: Dental roots in the maxillary sinus are almost twice as likely to be associated with diseased sinuses than normal sinuses. Healthy teeth whose roots are inside the maxillary sinus may induce an inflammatory response in the sinus membrane. It is suspected that dental procedures may exacerbate the condition.

  10. [Conservative therapy of chronic sinusitis].

    Science.gov (United States)

    Reiss, Michael; Reiss, Gilfe

    2012-01-01

    The chronic rhinosinusitis is defined as chronic inflammation of the nose and nasal sinuses, with or without nasal polyps. Patients suffering from chronic rhinosinusitis report about nasal obstruction and secretion, olfactory impairment, head and facial pain. These symptoms cause also considerable impact on quality of life. Therefore, an adequate rhinological diagnostics as well as therapies are essential. This paper reviews the pharmacologic and non-pharmacologic therapy of chronic rhinosinusitis. First choice of therapy should be topical glucocorticoids. The application of glucocorticoids causes anti-inflammatory and certain curative effects. Hypertonic salt solutions improve nasal symptoms. Long-term therapy with oral macrolides might improve median to severe symptoms of chronic rhinosinusitis without nasal polyps. An additional therapy with antihistamines is possible in patients with an allergy. Adaptive desensitization in patients suffering from analgesic-intolerance associating among other with nasal polyps is currently the single causal therapy. Therefore, frequency of endonasal revision surgery is reduced after desensitization.

  11. [Ectopic molar tooth in the maxillary sinus].

    Science.gov (United States)

    Altun, Hüseyin; Teker, Ayşenur Meriç; Ceran, Murat; Gedikli, Orhan

    2007-01-01

    The development of intranasal ectopic teeth is rare. Although they are more commonly seen in the palate and maxillary sinus, they can also be found in the mandibular condyle, coronoid process, and nasal cavity. A 30-year-old male patient presented with a complaint of headache. Computed tomography of the paranasal sinuses showed a bony mass in the right maxillary sinus wall, 1 cm in size. He did not have any history of maxillofacial trauma or operation. The mass was removed via a Caldwell-Luc procedure. It looked like a tooth. Histopathologic diagnosis was made as ectopic molar tooth. The patient was asymptomatic two weeks after the operation.

  12. Petrosal sinus sampling: technique and rationale.

    Science.gov (United States)

    Miller, D L; Doppman, J L

    1991-01-01

    Bilateral simultaneous sampling of the inferior petrosal sinuses is an extremely sensitive, specific, and accurate test for diagnosing Cushing disease and distinguishing between that entity and the ectopic ACTH syndrome. It is also valuable for lateralizing small hormone-producing adenomas within the pituitary gland. The inferior petrosal sinuses connect the cavernous sinuses with the ipsilateral internal jugular veins. The anatomy of the anastomoses between the inferior petrosal sinus, the internal jugular vein, and the venous plexuses at the base of the skull varies, but it is almost always possible to catheterize the inferior petrosal sinus. In addition, variations in size and anatomy are often present between the two inferior petrosal sinuses in a patient. Advance preparation is required for petrosal sinus sampling. Teamwork is a critical element, and each member of the staff should know what he or she will be doing during the procedure. The samples must be properly labeled, processed, and stored. Specific needles, guide wires, and catheters are recommended for this procedure. The procedure is performed with specific attention to the three areas of potential technical difficulty: catheterization of the common femoral veins, crossing the valve at the base of the left internal jugular vein, and selective catheterization of the inferior petrosal sinuses. There are specific methods for dealing with each of these areas. The sine qua non of correct catheter position in the inferior petrosal sinus is demonstration of reflux of contrast material into the ipsilateral cavernous sinus. Images must always be obtained to document correct catheter position. Special attention must be paid to two points to prevent potential complications: The patient must be given an adequate dose of heparin, and injection of contrast material into the inferior petrosal sinuses and surrounding veins must be done gently and carefully. When the procedure is performed as outlined, both inferior

  13. Management of the entered frontal sinus.

    Science.gov (United States)

    Caroli, Emanuela; Rocchi, Giovanni; D'Andrea, Giancarlo; Delfini, Roberto

    2004-10-01

    The opening of the frontal sinus is a common occurrence in surgical practice. It may involve many surgical disciplines. The complications that may derive from incorrect treatment of an opened frontal sinus are potentially fatal. Unfortunately, the treatment of patients with injured frontal sinus is not uniform and standardized. Here, we describe our technique of treatment. We propose our treatment modality on the basis of our personal experience, which has been excellent in the past 20 years, that is from the time of the technique's introduction and routine application.

  14. Arrhythmias in the setting of hematopoietic cell transplants.

    Science.gov (United States)

    Tonorezos, E S; Stillwell, E E; Calloway, J J; Glew, T; Wessler, J D; Rebolledo, B J; Pham, A; Steingart, R M; Lazarus, H; Gale, R P; Jakubowski, A A; Schaffer, W L

    2015-09-01

    Prior studies report that 9-27% of persons receiving a hematopoietic cell transplant develop arrhythmias, but the effect on outcomes is largely unknown. We reviewed data from 1177 consecutive patients ⩾40 years old receiving a hematopoietic cell transplant at one center during 1999-2009. Transplant indication was predominately leukemia, lymphoma and multiple myeloma. Overall, 104 patients were found to have clinically significant arrhythmia: 43 before and 61 after transplant. Post-transplant arrhythmias were most frequently atrial fibrillation (N=30), atrial flutter (N=7) and supraventricular tachycardia (N=11). Subjects with an arrhythmia post transplant were more likely to have longer median hospital stays (32 days vs 23, P=transplant (41% vs 15%; Ptransplant, diagnosis, history of pretransplant arrhythmia, and transplant-related variables, post-transplant arrhythmia was associated with a greater risk for death within a year of transplant (odds ratio 3.5, 95% confidence interval: 2.1, 5.9; Ptransplants are associated with significant morbidity and mortality. A prospective study of arrhythmia in the transplant setting is warranted.

  15. Role of the autonomic nervous system in modulating cardiac arrhythmias.

    Science.gov (United States)

    Shen, Mark J; Zipes, Douglas P

    2014-03-14

    The autonomic nervous system plays an important role in the modulation of cardiac electrophysiology and arrhythmogenesis. Decades of research has contributed to a better understanding of the anatomy and physiology of cardiac autonomic nervous system and provided evidence supporting the relationship of autonomic tone to clinically significant arrhythmias. The mechanisms by which autonomic activation is arrhythmogenic or antiarrhythmic are complex and different for specific arrhythmias. In atrial fibrillation, simultaneous sympathetic and parasympathetic activations are the most common trigger. In contrast, in ventricular fibrillation in the setting of cardiac ischemia, sympathetic activation is proarrhythmic, whereas parasympathetic activation is antiarrhythmic. In inherited arrhythmia syndromes, sympathetic stimulation precipitates ventricular tachyarrhythmias and sudden cardiac death except in Brugada and J-wave syndromes where it can prevent them. The identification of specific autonomic triggers in different arrhythmias has brought the idea of modulating autonomic activities for both preventing and treating these arrhythmias. This has been achieved by either neural ablation or stimulation. Neural modulation as a treatment for arrhythmias has been well established in certain diseases, such as long QT syndrome. However, in most other arrhythmia diseases, it is still an emerging modality and under investigation. Recent preliminary trials have yielded encouraging results. Further larger-scale clinical studies are necessary before widespread application can be recommended.

  16. The effect of sinus surgery with intensive follow-up on pathogenic sinus bacteria in patients with cystic fibrosis

    DEFF Research Database (Denmark)

    Aanaes, Kasper; von Buchwald, Christian; Hjuler, Thomas

    2013-01-01

    Most patients with cystic fibrosis (CF) have chronic rhinosinusitis; their sinuses are often colonized with bacteria that can initiate and maintain deleterious pulmonary infections. Theoretically, eradication of the sinus bacteria should reduce the frequency of lung infections and thereby reduce ...... pulmonary morbidity. This article addressed whether bacteria in CF sinuses are eligible for eradication by sinus surgery and postoperative treatment....

  17. Feasibility of the maxillary sinus ultrasonic study in patients with iatrogenic sinusitis

    Directory of Open Access Journals (Sweden)

    S. D. Varzhapetyan

    2016-03-01

    Full Text Available Objective: to study the effectiveness of ultrasonic diagnostic imaging in the diagnostics of the iatrogenic maxillary sinusitis. Materials and Methods. 68 (100.0% patients of iatrogenic maxillary sinusitis undergone Sonographic Study in B-mode (ultrasonic diagnostic apparatus FCUSON X 500, ATSmod.539 (SIEMENS, USA. For this purpose, we used linear sensors with a working surface of 37 mm long with 7.10 MHz frequency regime. The findings were compared with the results of clinical (rhinoscopy, sinus lavage through perforation, diagnostic puncture and radiological (cone-beam computed tomography examination. The results were recorded according The accuracy of the two-dimensional sonography in the detection of pathological formations (polyps, cysts, foreign bodies, iatrogenic and inflammatory origin in the sinus was detected as lower than in clinical methods. Sensitivity of the two-dimensional sonography was 8.3%, specificity – 95.4% overall accuracy – 64.7%. Informativity of the cone beam tomography in the detection of exudation, effusion and thickening of the sinus mucosa during sinus iatrogenic sinusitis was detected as lower than in sonography. The sensitivity of the two-dimensional sonography in the detection of exudation in the sinus with iatrogenic maxillary sinus was 96.8%, specificity – 91.7% overall accuracy – 94.1%. The sensitivity of the cone beam tomography to thicken (sclerotic changes mucosa was 37.5%, specificity – 92.8%, accuracy – 52.9%. Conclusions. Feasibility of the ultrasound sonography in patients with iatrogenic sinusitis is less than in computer tomography. Maxillary sinuses sonography in addition to CT will improve the quality of the examination in patients with iatrogenic maxillary sinusitis.

  18. Sphenoidal fungal sinusitis with intracranial extension An interesting Case Report

    OpenAIRE

    2013-01-01

    Isolated sphenoid sinusitis is rather rare. Fungal sinusitis is common in immunocompromised patients. In this case report the authors describe an immunocompetent patient with isolated sphenoid fungal sinusitis with intracranial extension with a review of published literature.Unfavorable location and poor ventilation have been attributed as the probable factors involved in isolated sphenoid sinusitis. Considering the location of sphenoid sinus (close to skull base, optic nerve and great vessel...

  19. Cardiac arrhythmias during exercise testing in healthy men.

    Science.gov (United States)

    Beard, E. F.; Owen, C. A.

    1973-01-01

    Clinically healthy male executives who participate in a long-term physical conditioning program have demonstrated cardiac arrhythmia during and after periodic ergometric testing at submaximal and maximal levels. In 1,385 tests on 248 subjects, it was found that 34% of subjects demonstrated an arrhythmia at some time and 13% of subjects developed arrhythmia on more than one test. Premature systoles of ventricular origin were most common, but premature systoles of atrial origin, premature systoles of junctional origin, paroxysmal atrial tachycardia, atrioventricular block, wandering pacemaker, and pre-excitation were also seen. Careful post-test monitoring and pulse rate regulated training sessions are suggested for such programs.

  20. Arrhythmias in Adult Congenital Heart Disease: Diagnosis and Management.

    Science.gov (United States)

    Kumar, Saurabh; Tedrow, Usha B; Triedman, John K

    2015-11-01

    Cardiac arrhythmias are a major source of morbidity and mortality in adults with CHD. A multidisciplinary approach in a center specializing in the care of ACHD is most likely to have the expertise needed provide this care. Knowledge of the underlying anatomy, mechanism of arrhythmia, and potential management strategies is critical, as well as access and expertise in the use of advanced imaging and ablative technologies. Future challenges in management include refining the underlying mechanism and putative ablation targets for catheter ablation of AF, an arrhythmia rapidly rising in prevalence in this population.

  1. Intraparenchymal pneumocephalus caused by ethmoid sinus osteoma.

    Science.gov (United States)

    Kamide, Tomoya; Nakada, Mitsutoshi; Hayashi, Yutaka; Hayashi, Yasuhiko; Uchiyama, Naoyuki; Hamada, Jun-Ichiro

    2009-11-01

    We report a 57-year-old man with intraparenchymal pneumocephalus caused by ethmoid sinus osteoma. He had a history of severe allergic rhinitis, which caused him to frequently blow his nose, and he was referred to our hospital with headache and mild left hemiparesis. CT scans revealed a large volume of intraparenchymal air entrapped in the right frontal lobe related to an osteoma in the ethmoid sinus. The osteoma eroded the upper wall of the sinus and extended into the anterior cranial fossa. At operation, we observed that the osteoma had protruded intracranially through the skull base, disrupted the dura and extended into the frontal lobe. To our knowledge, this is the first report of a patient with intraparenchymal pneumocephalus caused by an ethmoid sinus osteoma.

  2. Sphenoid Sinusitis and Migraine-Type Headache

    Directory of Open Access Journals (Sweden)

    J. Gordon Millichap

    2002-02-01

    Full Text Available Three case histories of children (ages 10, 12, and 14 years with isolated sphenoid sinusitis who presented with acute, subacute, and chronic headache symptoms resembling migraine are reported from the University of Texas-Houston Medical School.

  3. Systemic corticosteroid therapy for acute sinusitis

    NARCIS (Netherlands)

    Venekamp, R.P.; Thompson, M.J.; Rovers, M.M.

    2015-01-01

    CLINICAL QUESTION: Are oral or parenteral corticosteroids associated with improved clinical outcomes in patients with acute sinusitis compared with placebo or nonsteroidal anti-inflammatory drugs (NSAIDs)? BOTTOM LINE: Oral corticosteroids combined with antibiotics may be associated with modest bene

  4. Systemic corticosteroid therapy for acute sinusitis

    NARCIS (Netherlands)

    Venekamp, Roderick P.; Thompson, Matthew J.; Rovers, Maroeska M.

    2015-01-01

    CLINICAL QUESTION: Are oral or parenteral corticosteroids associated with improved clinical outcomes in patients with acute sinusitis compared with placebo or nonsteroidal anti-inflammatory drugs (NSAIDs)? BOTTOM LINE: Oral corticosteroids combined with antibioticsmay be associated with modest benef

  5. Frontal sinus recognition for human identification

    Science.gov (United States)

    Falguera, Juan Rogelio; Falguera, Fernanda Pereira Sartori; Marana, Aparecido Nilceu

    2008-03-01

    Many methods based on biometrics such as fingerprint, face, iris, and retina have been proposed for person identification. However, for deceased individuals, such biometric measurements are not available. In such cases, parts of the human skeleton can be used for identification, such as dental records, thorax, vertebrae, shoulder, and frontal sinus. It has been established in prior investigations that the radiographic pattern of frontal sinus is highly variable and unique for every individual. This has stimulated the proposition of measurements of the frontal sinus pattern, obtained from x-ray films, for skeletal identification. This paper presents a frontal sinus recognition method for human identification based on Image Foresting Transform and shape context. Experimental results (ERR = 5,82%) have shown the effectiveness of the proposed method.

  6. Genetics Home Reference: sick sinus syndrome

    Science.gov (United States)

    ... the structure of myosin, which can affect cardiac muscle contraction and increase the likelihood of developing an abnormal heartbeat. More commonly, sick sinus syndrome is caused by other ... such as muscular dystrophy, abnormal inflammation, or a shortage of oxygen ( ...

  7. Migrating implant masquerading as acute sinusitis

    OpenAIRE

    2008-01-01

    The author presents a case of migrating miniplate screw presenting as acute on chronic sinusitis. Mini plates have been used in osteosynthesis of the mandible and maxillofacial surgery. In the last decade there has been an increase in the incidence of use of miniplates to stabilise Lefort II and III fractures involving the maxilla. The case report highlights the rare presentation of screw impinging on inferior turbinate in a patient who is a known case of chronic sinusitis presenting as acute...

  8. Radiological evaluation of sinus valsalva rupture

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Yul; Park, Jae Hyung; Yeon, Kyung Mo; Han, Man Chung [Seoul National University College of Medicine, Seoul (Korea, Republic of)

    1984-03-15

    We obtained the following results by reviewing the radiographic findings of 15 cases of Sinus valsalva rupture who were diagnosed surgically at Seoul National University Hospital since 1979. 1. Among distribution was from 15 years to 40 years with the mean age of 24 years. Among the 15 cases, 9 cases were male and 7 were female. 2. Ruptured sinus is right coronary sinus projecting to right ventricle in all 15 cases. Combined diseases are ventricular septal defect in 12 cases, Aortic Valvular heart disease in 4 cases, and narrowing of right ventricular outflow tract in 2 cases, and aneurysmal dilatation of right pulmonary artery in 1 cases. 3. Chest X-ray findings were that of left to right shunt, i.e, cardiomegaly, increased pulmonary vascularity but were normal in 3 cases. 4. Aortography showed sequential leakage of dye from right coronary sinus to right ventricle and finally to pulmonary artery in 9 cases, and in 9 cases of them the leakage is directly to right ventricular outflow tract without filling of sinus portion of the ventricle., i.e., type I. 5. The leakage was well shown in left ventricular diastolic phase and not shown in systolic phase. 6. Ventricular septal defects were not detected definitely in spite of taking left ventriculography. 7. Cine angiography is essential for detecting accurate site, degree and direction of sinus valsalva rupture and other associated cardiac abnormality.

  9. An update on risk factors for drug-induced arrhythmias.

    Science.gov (United States)

    Vlachos, Konstantinos; Georgopoulos, Stamatis; Efremidis, Michael; Sideris, Antonios; Letsas, Konstantinos P

    2016-01-01

    A variety of drugs, either anti-arrhythmics or non-antiarrhythmics, have been associated with drug-induced arrhythmias. Drug-induced arrhythmias are usually observed in the presence of long QT interval or Brugada electrocardiographic pattern. Clinical risk factors, such as female gender, structural heart disease, metabolic and electrolyte abnormalities, bradycardia and conduction disease, increased drug bioavailability, and silent channelopathies act as ''effect amplifiers'' which can make an otherwise relatively safe drug dangerous with regard to risk for polymorphic ventricular tachycardia in the setting of QT interval prolongation. A drug-induced type 1 electrocardiographic pattern of Brugada syndrome is considered highly proarrhythmic. Specific electrocardiographic markers including the corrected QT interval, QRS duration, Tpeak-Tend/QT ratio, and others may predict the risk of arrhythmias in both situations. The present review highlights on the current clinical and electrocardiographic risk factors for prediction of drug-induced arrhythmias.

  10. Atrial Arrhythmias in Astronauts. Summary of a NASA Summit

    Science.gov (United States)

    Barr, Yael; Watkins, Sharmila; Polk, J. D.

    2011-01-01

    This slide presentation reviews the findings of a panel of heart experts brought together to study if atrial arrhythmias more prevalent in astronauts, and potential risk factors that may predispose astronauts to atrial arrhythmias. The objective of the panel was to solicit expert opinion on screening, diagnosis, and treatment options, identify gaps in knowledge, and propose relevant research initiatives. While Atrial Arrhythmias occur in approximately the same percents in astronauts as in the general population, they seem to occur at younger ages in astronauts. Several reasons for this predisposition were given: gender, hypertension, endurance training, and triggering events. Potential Space Flight-Related Risk factors that may play a role in precipitating lone atrial fibrillation were reviewed. There appears to be no evidence that any variable of the space flight environment increases the likelihood of developing atrial arrhythmias during space flight.

  11. Therapy with conventional antiarrhythmic drugs for ventricular arrhythmias.

    Science.gov (United States)

    Nestico, P F; DePace, N L; Morganroth, J

    1984-09-01

    Conventional antiarrhythmic drugs are an important tool for the clinical cardiologist for the treatment of ventricular arrhythmias. Knowledge of the different properties of these drugs will help decrease the incidence of adverse effects and increase the frequency of successful therapy.

  12. QTc-prolonging drugs and hospitalizations for cardiac arrhythmias

    DEFF Research Database (Denmark)

    De Bruin, Marie L; Hoes, Arno W; Leufkens, Hubert G M

    2003-01-01

    , and subsequently focused on several specific groups of patients who could be extremely vulnerable for drug-induced arrhythmias. We performed a case-control study in which patients (cases), hospitalized for nonatrial cardiac arrhythmias from 1987 to 1998, were compared with their matched controls regarding current...... use of QTc-prolonging drugs. Odds ratios (OR) and 95% confidence intervals (CI) were calculated using multivariate conditional logistic regression, adjusting for potential confounding factors. Data were obtained from the PHARMO record linkage system. We identified 501 cases, 39 of whom used QTc......-prolonging drugs. A statistically nonsignificant increased risk for arrhythmias (OR 1.2, 95% CI 0.8 to 1.9) was observed in patients who received QTc-prolonging drugs. A clearly increased risk of arrhythmias was, however, found in patients with a history of asthma (OR 9.9, 95% CI 1.0 to 100) and in patients using...

  13. [Idiopathic ventricular tachycardia, an arrhythmia with good prognosis].

    NARCIS (Netherlands)

    Camaro, C.; Bos, H.S.; Smeets, J.L.R.M.

    2010-01-01

    Three patients, one experiencing palpitations and two complaining of chest pain in stressful situations, appeared to have monomorphic wide complex tachycardia. After excluding channelopathy, structural abnormalities and ischaemia of the heart, this arrhythmia was classified as idiopathic. Symptoms d

  14. Controlled exposures to air pollutants and risk of cardiac arrhythmia

    NARCIS (Netherlands)

    Langrish, Jeremy P; Watts, Simon J; Hunter, Amanda J; Shah, Anoop S V; Bosson, Jenny A; Unosson, Jon; Barath, Stefan; Lundbäck, Magnus; Cassee, Flemming R; Donaldson, Ken; Sandström, Thomas; Blomberg, Anders; Newby, David E; Mills, Nicholas L

    2014-01-01

    BACKGROUND: Epidemiological studies have reported associations between air pollution exposure and increases in cardiovascular morbidity and mortality. Exposure to air pollutants can influence cardiac autonomic tone and reduce heart rate variability, and may increase the risk of cardiac arrhythmias,

  15. Sleep Apnea and Nocturnal Cardiac Arrhythmia: A Populational Study

    Directory of Open Access Journals (Sweden)

    Fatima Dumas Cintra

    2014-11-01

    Full Text Available Background: The mechanisms associated with the cardiovascular consequences of obstructive sleep apnea include abrupt changes in autonomic tone, which can trigger cardiac arrhythmias. The authors hypothesized that nocturnal cardiac arrhythmia occurs more frequently in patients with obstructive sleep apnea. Objective: To analyze the relationship between obstructive sleep apnea and abnormal heart rhythm during sleep in a population sample. Methods: Cross-sectional study with 1,101 volunteers, who form a representative sample of the city of São Paulo. The overnight polysomnography was performed using an EMBLA® S7000 digital system during the regular sleep schedule of the individual. The electrocardiogram channel was extracted, duplicated, and then analyzed using a Holter (Cardio Smart® system. Results: A total of 767 participants (461 men with a mean age of 42.00 ± 0.53 years, were included in the analysis. At least one type of nocturnal cardiac rhythm disturbance (atrial/ventricular arrhythmia or beat was observed in 62.7% of the sample. The occurrence of nocturnal cardiac arrhythmias was more frequent with increased disease severity. Rhythm disturbance was observed in 53.3% of the sample without breathing sleep disorders, whereas 92.3% of patients with severe obstructive sleep apnea showed cardiac arrhythmia. Isolated atrial and ventricular ectopy was more frequent in patients with moderate/severe obstructive sleep apnea when compared to controls (p < 0.001. After controlling for potential confounding factors, age, sex and apnea-hypopnea index were associated with nocturnal cardiac arrhythmia. Conclusion: Nocturnal cardiac arrhythmia occurs more frequently in patients with obstructive sleep apnea and the prevalence increases with disease severity. Age, sex, and the Apnea-hypopnea index were predictors of arrhythmia in this sample.

  16. Keratocystic odontogenic tumor involving the maxillary sinus: A rare entity

    Directory of Open Access Journals (Sweden)

    Mohammad Asif Kiresur

    2016-01-01

    Full Text Available The keratocystic odontogenic tumor (KCOT is a frequently encountered developmental cyst of the jaws. The occurrence of KCOT in the maxillary sinus is rare. The mucosa of the maxillary sinus is susceptible to infections, allergic diseases, and neoplasm. The anatomic position of maxillary premolar and molar teeth is in close contact with the sinus predispose to spreading of pulp and periodontal infection, odontogenic cyst, and tumors to the sinus. Diagnosis and treating KCOT in maxillary sinus is challenging as treatment has to be rendered for sinusitis because of pathology in the sinus and for KCOT. We report a case of 35-year-old female with KCOT involving the lining of the maxillary sinus and put forward hypotheses for the origin of KCOT in the maxillary sinus.

  17. ECG spectral and morphological parameters reviewed and updated to detect adult and paediatric life-threatening arrhythmia.

    Science.gov (United States)

    Aramendi, E; Irusta, U; Pastor, E; Bodegas, A; Benito, F

    2010-06-01

    Since the International Liaison Committee on Resuscitation approved the use of automated external defibrillators (AEDs) in children, efforts have been made to adapt AED algorithms designed for adult patients to detect paediatric ventricular arrhythmias accurately. In this study, we assess the performance of two spectral (A(2) and VFleak) and two morphological parameters (TCI and CM) for the detection of lethal ventricular arrhythmias using an American Heart Association (AHA) compliant database that includes adult and paediatric arrhythmias. Our objective was to evaluate how those parameters can be optimally adjusted to discriminate shockable from nonshockable rhythms in adult and paediatric patients. A total of 1473 records were analysed: 751 from 387 paediatric patients ( 0.01) between the adult and paediatric patients for the shockable records; the differences for nonshockable records however were significant. Still, these parameters maintained the discrimination power when paediatric rhythms were included. A single threshold could be adjusted to obtain sensitivities and specificities above the AHA goals for the complete database. The sensitivities for ventricular fibrillation (VF) and ventricular tachycardia (VT) were 91.1% and 96.6% for VFleak, and 90.3% and 99.3% for A(2). The specificities for normal sinus rhythm (NSR) and other nonshockable rhythms were 99.5% and 96.3% for VFleak, and 99.0% and 97.7% for A(2). On the other hand, the morphological parameters showed significant differences between the adult and paediatric patients, particularly for the nonshockable records, because of the faster heart rates of the paediatric rhythms. Their performance clearly degraded with paediatric rhythms. Using a single threshold, the sensitivities and specificities were below the AHA goals, particularly VT sensitivity (60.4% for TCI and 65.8% for CM) and the specificity for other nonshockable rhythms (51.7% for TCI and 34.5% for CM). The specificities, particularly for

  18. Distribution Entropy (DistEn): A complexity measure to detect arrhythmia from short length RR interval time series.

    Science.gov (United States)

    Karmakar, Chandan; Udhayakumar, Radhagayathri K; Palaniswami, Marimuthu

    2015-01-01

    Heart rate complexity analysis is a powerful non-invasive means to diagnose several cardiac ailments. Non-linear tools of complexity measurement are indispensable in order to bring out the complete non-linear behavior of Physiological signals. The most popularly used non-linear tools to measure signal complexity are the entropy measures like Approximate entropy (ApEn) and Sample entropy (SampEn). But, these methods become unreliable and inaccurate at times, in particular, for short length data. Recently, a novel method of complexity measurement called Distribution Entropy (DistEn) was introduced, which showed reliable performance to capture complexity of both short term synthetic and short term physiologic data. This study aims to i) examine the competence of DistEn in discriminating Arrhythmia from Normal sinus rhythm (NSR) subjects, using RR interval time series data; ii) explore the level of consistency of DistEn with data length N; and iii) compare the performance of DistEn with ApEn and SampEn. Sixty six RR interval time series data belonging to two groups of cardiac conditions namely `Arrhythmia' and `NSR' have been used for the analysis. The data length N was varied from 50 to 1000 beats with embedding dimension m = 2 for all entropy measurements. Maximum ROC area obtained using ApEn, SampEn and DistEn were 0.83, 0.86 and 0.94 for data length 1000, 1000 and 500 beats respectively. The results show that DistEn undoubtedly exhibits a consistently high performance as a classification feature in comparison with ApEn and SampEn. Therefore, DistEn shows a promising behavior as bio marker for detecting Arrhythmia from short length RR interval data.

  19. [Influence of beta block and autonomic nerve block on the recovery time of the sinus node in sick sinus syndrome and carotid sinus syndrome].

    Science.gov (United States)

    Brignole, M; Sartore, B; Barra, M; Menozzi, C; Monducci, I; Bertulla, A

    1984-10-01

    In order to evaluate the relative role of the automatic nervus system and of the intrinsic electrophysiologic properties on the sinus node function, we measured the corrected sinus node recovery time before and after autonomic nervous system blockade in 24 patients. Fourteen had a sick sinus syndrome, five had a carotid sinus syncope, two had syncope of unknown origin associated with bradycardia. Beta blockade was obtained by infusing metoprolol intravenously at a dosage of 0.2 mg/kg; complete automatic blockade was achieved by further i.v. administration of atropine at a dosage of 0.04 mg/kg. After beta blockade, the corrected sinus node recovery time increased in patients with sick sinus syndrome and intrinsic slow heart rate, whereas it decreased in patients with carotid sinus syncope or with syncope and bradycardia. In patients with sick sinus syndrome and normal intrinsic heart rate the response was variable. A positive direct correlation was found between the changes of the corrected sinus node recovery time induced by beta blockade and those induced by autonomic blockade; that is, both either prolonged or shortened the corrected sinus node recovery time. The changes of the corrected sinus node recovery time after beta blockade alone were inversely correlated with the intrinsic heart rate. We conclude that patients with intrinsic depression of the sinus node have an increased sympathetic tone.

  20. Computer-assisted education system for arrhythmia (CAESAR).

    Science.gov (United States)

    Fukushima, M; Inoue, M; Fukunami, M; Ishikawa, K; Inada, H; Abe, H

    1984-08-01

    A computer-assisted education system for arrhythmia (CAESAR) was developed for students to acquire the ability to logically diagnose complicated arrhythmias. This system has a logical simulator of cardiac rhythm using a mathematical model of the impulse formation and conduction system of the heart. A simulated arrhythmia (ECG pattern) is given on a graphic display unit with simulated series of the action potential of five pacemaker centers and the "ladder diagram" of impulse formation and conduction, which show the mechanism of that arrhythmia. For the purpose of the evaluation of this system, 13 medical students were given two types of tests concerning arrhythmias before and after 2-hr learning with this system. The scores they obtained after learning increased significantly from 73.3 +/- 11.9 to 93.2 +/- 3.0 (P less than 0.001) in one test and from 47.2 +/- 17.9 to 64.9 +/- 19.6 (P less than 0.001) in another one. These results proved that this CAI system is useful and effective for training ECG interpretation of arrhythmias.

  1. [Sinus lift and dental implantation after endosurgical treatment of odontogenic maxillary sinusitis].

    Science.gov (United States)

    Sysoliatin, S P; Sysoliatin, P G; Palkina, M O; Solop, M V

    2013-01-01

    The long-term results of dental implant placement in patients with the history of odontogenic maxillary sinusitis are assessed in retrospective study. Maxillary sinusotomy and endoscopic surgery procedures are compared in regard to complications risks after subsequent sinus lift and dental implantation, the latter proving to be method of choice in such cases.

  2. Cranialization of the frontal sinus-the final remedy for refractory chronic frontal sinusitis

    NARCIS (Netherlands)

    van Dijk, J. Marc C.; Wagemakers, Michiel; Korsten-Meijer, Astrid G. W.; Buiter, C. T. Kees; van der Laan, Bernard F. A. M.; Mooij, Jan Jakob A.

    2012-01-01

    Object. Chronic sinusitis can be a debilitating disease with significant impact on quality of life. Frontal sinusitis has a relatively low prevalence, but complications can be severe due to its anatomical location. After failure of conservative measures, typically endoscopic procedures are performed

  3. SEVERE AMIODARONE-INDUCED BRADICARDIA CONCEALES SICK SINUS SYNDROME: CASE REPORT.

    Science.gov (United States)

    Crăcană, Irina; Vasilcu, T F; Mardare, Alexandra; Alexa, Ioana Dana; Marcu, D T M

    2016-01-01

    Sinus node dysfunction is one of the most common arrhythmias in elderly patients; it is usually associated with intermittent and variable symptoms, thus making it difficult to diagnose. We present the case of an elderly female patient with a personal history of atrial fibrillation treated for the last three years with amiodarone; she was admitted to the Geriatric Clinic for non-specific symptoms with onset two months previously for which she had already sought care in different medical services. Clinical examination showed severe bradycardia; ECG and Holter ECG on admission confirmed severe bradycardia, with a heart rate between 29 and 50 beats/min (bpm). Given her long-term treatment with amiodarone we looked for and found hyperthyroidism; the endocrine examination led to the diagnosis of mixed type Amiodarone-induced thyrotoxicosis and initiation of corticosteroid and antithyroid treatment. The evolution of cardiac arrhythmia was monitored with the help of several Holter ECGs performed after amiodarone washout and return to the euthyroid state, which revealed a tachycardia-bradycardia syndrome initially masked by the side effects of the unsupervised therapy with amiodarone, and properly treated by the implantation of a pacemaker.

  4. Pacemaker implantation in a patient with brugada and sick sinus syndrome

    DEFF Research Database (Denmark)

    Risgaard, Bjarke; Bundgaard, Henning; Jabbari, Reza

    2013-01-01

    no cardiac symptoms, although her electrocardiogram changes now were consistent with a BrS type 1 pattern. A genetic test confirmed that she had the same mutation in SCN5A as her brother. In this case-report we present a loss-of function mutation in SCN5A not previously associated with BrS nor presented......Brugada syndrome (BrS) is a rare and inherited primary arrhythmic syndrome characterized by ST-segment elevations in the right precordial leads (V1-V3) with an increased risk of sudden cardiac death (SCD). Arrhythmias in BrS are often nocturne, and brady-arrhythmias are often seen in patients...... with loss-of-function mutations in SCN5A. In this case-report we present a 75-year old woman referred to our outpatient clinic for inherited cardiac diseases for a familial clinical work-up. Since childhood she had suffered from dizziness, absence seizures, and countless Syncope's. In 2004 sick sinus...

  5. Cardiomyopathy Due to Nonsustained Ventricular Tachycardia Originating from the Aortic Sinus Cusp

    Directory of Open Access Journals (Sweden)

    Hamidreza Bonakdar

    2013-03-01

    Full Text Available We report a case of idiopathic nonsustained ventricular tachycardia (VT originating from the aortic sinus cusp referred for presyncope and LV dysfunction and frequent premature ventricular complex with no response to 3 months anti-arrhythmic medication for heart failure and arrhythmia. She was then referred to us for frequent PVC's and runs of nonsustained VT. ECG recorded during the nonsustained VT showed a left bundle branch block pattern in the precordial leads and an inferior axis and early transition in precordial leads in V3-V4. QS morphology in lead V1 was noticed with notching on the downward deflection. Electrophysiologic study was conducted to map ventricular outflow tract as a classic method, although pace map failed to find any matched QRS with the spontaneous PVCs. The mapping of aortic cusps was also performed. The best potential was recorded in a region located at the commissure of left-right aortic cusps. A single radiofrequency energy was delivered which resulted in immediate elimination of PVCs. The patient was discharged the day after ablation without any PVC recorded on monitor. Left ventricular ejection fraction(LVEF improved to normal level two months later. There was no PVC detected at serial holter monitoring. It seems logical not to overlook even an isolated or nonsustained ventricular arrhythmia considering the available and effective treatments such as ablation rather than congestive heart failure(CHF therapy especially in a young patient.

  6. Sisters of the sinuses: cetacean air sacs.

    Science.gov (United States)

    Reidenberg, Joy S; Laitman, Jeffrey T

    2008-11-01

    This overview assesses some distinguishing features of the cetacean (whale, dolphin, porpoise) air sac system that may relate to the anatomy and function of the paranasal sinuses in terrestrial mammals. The cetacean respiratory tract has been modified through evolution to accommodate living in water. Lack of paranasal sinuses in modern cetaceans may be a diving adaptation. Bone-enclosed air chambers are detrimental, as their rigid walls may fracture during descent/ascent due to contracting/re-expanding air volumes. Flexible-walled "sinuses" (extracranial diverticula) are a logical adaptation to diving. Odontocetes (toothed whales) exhibit several pairs of paranasal air sacs. Although fossil evidence indicates that paranasal sinuses occur in archaeocetes (ancestors/relatives of living cetaceans), it is not known whether the paranasal sacs derive from these sinuses. Sac pigmentation indicates that they derived from invaginations of the integument. Unlike sinuses, paranasal sacs are not circumferentially enclosed in bone, and therefore can accommodate air volume changes that accompany diving pressure changes. Paired pterygoid sacs, located ventrally along the cetacean skull, connect the pharynx and middle ear cavities. Mysticetes (baleen whales) have a large midline laryngeal sac. Although cetacean air sacs do not appear to be homologous to paranasal sinuses, they may serve some analogous respiratory, vocal, or structural functions. For example, these sacs may participate in gas exchange, thermoregulation, resonance, and skeletal pneumatization. In addition, they may subserve unique aquatic functions, such as increasing inspiratory volume, mitigating pressure-induced volume change, air shunting to reduce respiratory dead space, and facilitating underwater sound production and transmission.

  7. [Non-puncture treatment of sinusitis in nasal septal defects].

    Science.gov (United States)

    Shilenkova, V V; Markov, G I; Shilenkov, A A

    1994-01-01

    The [symbol: see text] sinus-catheter was used to treat purulent sinusitis with septal perforation or defective septum of the sinuses. The procedure described implies simultaneous introduction of two sinus-catheters the functioning channels of which unite into one output by means of T-joint. The method has been successfully tried in the treatment of exudative and aggravated chronic purulent hemisinusitis (6 cases). The authors hold that communication between nasal sinuses is not a contraindication for sinus-catheter application. This fact widely extends potentialities of its use.

  8. Cholesterol Granuloma of the Frontal Sinus: A Case Report

    Science.gov (United States)

    Marco, Manola; Ida, Casorelli; Francesco Luigi, Pietrafesa; Giampiero, Mottola; Domenico, Lacerenza; Giuseppe, Battiloro; Giuseppe, Patitucci; Giulia Anna Carmen, Vita

    2012-01-01

    Cholesterol granulomas are common in the mastoid antrum and air cells of the temporal bone. In the paranasal sinuses, especially in the frontal sinus, they have occasionally been mentioned in the literature. The pathogenesis is unknown, but the majority of the authors support the concept of airway obstruction in the cells well pneumatised of temporal bone and paranasal sinuses. The authors report a case of cholesterol granuloma of the frontal sinus treated with radical surgical techniques, and they also recommend an endoscopic approach to frontal sinus to restore or enlarge the nose-frontal canal and promote drainage and ventilation of the frontal sinus. PMID:23150840

  9. Cholesterol Granuloma of the Frontal Sinus: A Case Report

    Directory of Open Access Journals (Sweden)

    Manola Marco

    2012-01-01

    Full Text Available Cholesterol granulomas are common in the mastoid antrum and air cells of the temporal bone. In the paranasal sinuses, especially in the frontal sinus, they have occasionally been mentioned in the literature. The pathogenesis is unknown, but the majority of the authors support the concept of airway obstruction in the cells well pneumatised of temporal bone and paranasal sinuses. The authors report a case of cholesterol granuloma of the frontal sinus treated with radical surgical techniques, and they also recommend an endoscopic approach to frontal sinus to restore or enlarge the nose-frontal canal and promote drainage and ventilation of the frontal sinus.

  10. Treatment of arrhythmias by external charged particle beams: a Langendorff feasibility study.

    Science.gov (United States)

    Prall, Matthias; Lehmann, H Immo; Prokesch, Hannah; Richter, Daniel; Graeff, Christian; Kaderka, Robert; Sonnenberg, Karin; Hauswald, Henrik; Weymann, Alexander; Bauer, Julia; Constantinescu, Anna; Haberer, Thomas; Debus, Jürgen; Szabó, Gábor; Korkmaz, Sevil; Durante, Marco; Packer, Douglas L; Bert, Christoph

    2015-04-01

    Hadron therapy has already proven to be successful in cancer therapy, and might be a noninvasive alternative for the ablation of cardiac arrhythmias in humans. We present a pilot experiment investigating acute effects of a 12C irradiation on the AV nodes of porcine hearts in a Langendorff setup. This setup was adapted to the requirements of charged particle therapy. Treatment plans were computed on calibrated CTs of the hearts. Irradiation was applied in units of 5 and 10 Gy over a period of about 3 h until a total dose of up to 160 Gy was reached. Repeated application of the same irradiation field helped to mitigate motion artifacts in the resulting dose distribution. After irradiation, PET scans were performed to verify accurate dose application. Acute AV blocks were identified. No other acute effects were observed. Hearts were kept in sinus rhythm for up to 6 h in the Langendorff setup. We demonstrated that 12C ions can be used to select a small target in the heart and, thereby, influence the electrical conduction system. Second, our pilot study seems to suggest that no adverse effects have to be expected immediately during heavy ion irradiation in performing subsequent experiments with doses of 30-60 Gy and intact pigs.

  11. Arrhythmia detection in single- and dual-chamber implantable cardioverter defibrillators: the more leads, the better?

    Science.gov (United States)

    Francia, Pietro; Balla, Cristina; Uccellini, Arianna; Cappato, Riccardo

    2009-09-01

    The implantable cardioverter defibrillator (ICD) offers life-saving therapies for primary and secondary prevention of sudden cardiac death in high-risk patients. However, ICD detection algorithms consistently misclassify a substantial proportion of supraventricular rhythms, thus carrying the risk for inappropriate therapies. Although single-chamber ICD (Sc-ICD) discrimination tools have been reported to provide high specificity in rejecting sinus tachycardia and atrial fibrillation with a relatively low ventricular rate, accurate recognition of atrial fibrillation with faster ventricular rates, atrial tachycardias, atrial flutter, and some reentrant tachycardias is still an issue. Dual-chamber ICDs (Dc-ICDs) are supposed to overcome specificity issues by enhancing detection algorithms with information derived from the atrial and ventricular timing relationship. The initial promise of Dc-ICDs was to improve detection specificity without compromising sensitivity, and to translate this advantage over Sc-ICDs in a more selective use of aggressive therapies. Despite this solid background, superiority of Dc- over Sc-ICDs has never been convincingly demonstrated. The present review focuses on the efficacy of contemporary ICD arrhythmia discrimination tools and appraises the so far reported evidence supporting the superiority of Dc-ICDs in preventing inappropriate therapies.

  12. Cardiac arrhythmias induced by chloral hydrate in rhesus monkeys.

    Science.gov (United States)

    Han, Pengfei; Song, Haibo; Yang, Pingliang; Xie, Huiqi; Kang, Y James

    2011-06-01

    Chloral hydrate has been long used as a safe sedative and hypnotic drug in humans. However, reports on its cardiovascular adverse effects have been published from time to time. The present study was undertaken to use Rhesus monkeys as a model to define the dose regiment of chloral hydrate at which cardiac arrhythmias can be induced and the consequences of the cardiac events. Male Rhesus monkeys of 2-3 years old were intravenously infused with chloral hydrate starting at 50 mg/kg with an increasing increment of 25 mg/kg until the occurrence of cardiac arrhythmias. In addition, a traditional up-and-down dosing procedure was applied to define a single dose level at which cardiac arrhythmias can be induced. The data obtained showed that when the sequentially escaladed dose reached 125 mg/kg, cardiac arrhythmias occurred in all monkeys tested. The single effective dose to cause cardiac arrhythmias calculated from the crossover analysis was 143 ± 4 mg/kg. This value would be equivalent to 68.6 ± 1.9 mg/kg for children and 46.4 ± 1.3 mg/kg for adults in humans. Under either multiple or single dose condition, cardiac arrhythmias did not occur before 40 min after the onset of anesthesia induced by chloral hydrate. Cardiac arrhythmias were recovered without help at the end of the anesthesia in most cases, but also continued after the regain of consciousness in some cases. The cardiac arrhythmias were accompanied with compromised cardiac function including suppressed fractional shortening and ejection fraction. This study thus suggests that cautions need to be taken when chloral hydrate is used above certain levels and beyond a certain period of anesthesia, and cardiac arrhythmias induced by chloral hydrate need to be closely monitored because compromised cardiac function may occur simultaneously. In addition, patients with cardiac arrhythmias induced by chloral hydrate should be monitored even after they are recovered from the anesthesia.

  13. HISTOPATHOLOGICAL CHARACTERISTICS OF LYMPH NODE SINUS CONTAINING BLOOD

    Institute of Scientific and Technical Information of China (English)

    YIN Tong; JI Xiao-long

    2001-01-01

    This study is to find out the histopathological characteristics of lymph node sinus containing blood. Routine autopsy was carried out in the randomly selected 102 patients(among them,100 patients died of various diseases, and 2 of non-diseased causes),their superficial lymph nodes locating in the bilateral neck, axilla, inguina, thorax and abdomen were sampled. Haematoxylin-eosin staining was performed on 10% formalin-fixed and paraffin-embedded lymph node tissue sections(5μm).The histological characteristics of the lymph node sinuses containing blood were observed under light microscope. Among the 1362 lymph nodes sampled from the 100 autopsies, lymph sinuses containing blood were found in 809 lymph nodes sampled from 91 cases, but couldn't be seen in the lymph nodes sampled from the non-diseased cases. According to histology, five kinds of lymph sinuses containing blood were found:vascular-opening sinus, blood-deficient sinus, erythrophago-sinus, blood-abundant sinus, and vascular-formative sinus. It is concluded that in the state of disease, the phenomenon of blood in the lymph sinus is not uncommon. Blood could possibly enter into lymph sinus through lymphatic-venous communications between the veins and sinuses in the node. Lymph circulation and blood circulation could communicate with each other in the lymph sinus.

  14. Severe bleeding after sinus floor elevation using the transcrestal technique

    DEFF Research Database (Denmark)

    Jensen, Simon Storgard; Eriksen, Jacob; Schiodt, Morten

    2012-01-01

    To present a rare but clinically significant complication to sinus floor elevation (SFE) using the transcrestal technique.......To present a rare but clinically significant complication to sinus floor elevation (SFE) using the transcrestal technique....

  15. Idiopathic intracranial hypertension and transverse sinus stenoses

    DEFF Research Database (Denmark)

    Skyrman, Simon; Fytagoridis, Anders; Andresen, Morten

    2013-01-01

    An 18-year-old woman was diagnosed with idiopathic intracranial hypertension (IIH) and bilateral transverse sinus stenoses (TSS), after presenting with papilledema and decreased visual acuity. Lumbar puncture revealed an opening pressure of >60 cm H2O. MRI showed bilateral TSS believed to be asso......An 18-year-old woman was diagnosed with idiopathic intracranial hypertension (IIH) and bilateral transverse sinus stenoses (TSS), after presenting with papilledema and decreased visual acuity. Lumbar puncture revealed an opening pressure of >60 cm H2O. MRI showed bilateral TSS believed...... to be associated with the IIH. Initial treatment consisted of symptom relief by a temporary lumbar drain for cerebrospinal fluid (CSF) diversion, while the pros and cons of a more permanent solution by insertion of a ventriculoperitoneal shunt (VPS) or bilateral transverse sinus stent was discussed. A VPS...

  16. [Neuro-ophthalmological complications of sinusitis].

    Science.gov (United States)

    Tatuene, Joseph Kamtchum; Pollak, Pierre

    2013-10-01

    Sinusitis is a frequent and very often under-diagnosed condition. Despite the constantly increasing number of antibiotics with improved efficacy, prevention of its complications remains difficult. The prevalence of these complications is estimated at 3.7%. Their clinical presentation is highly variable making the diagnosis difficult and thereby increasing mortality. In this article, historical, epidemiological, pathophysiological, clinical and therapeutic aspects of neuro-ophthalmological complications of sinusitis are reviewed. For didactic reasons, the various complications have been divided into extra-axial, intra-axial, vascular, and orbital. Specific paragraph have been devoted to sinusitis-related bone complications and pain syndromes. It's however obvious that various more or less complex associations of these complications can be seen in daily practice.

  17. Mechanisms in adverse reactions to food. The sinuses

    DEFF Research Database (Denmark)

    Høst, A

    1995-01-01

    Food allergy is an extremely rare cause of chronic sinusitis. Mucosal inflammation in chronic sinusitis is rarely caused by allergic reactions to foods but rather viral infections in the upper respiratory tract.......Food allergy is an extremely rare cause of chronic sinusitis. Mucosal inflammation in chronic sinusitis is rarely caused by allergic reactions to foods but rather viral infections in the upper respiratory tract....

  18. A Rare Diabetic Autonomic Neuropathy: Carotid Sinus Hypersensitivity

    Directory of Open Access Journals (Sweden)

    Ahmet Kaya

    2016-03-01

    Full Text Available Carotid sinus hypersensitivity is a common cause of fainting and falls in the elderly, and can be diagnosed by carotid sinus massage. We present a 67-year-old diabetic man who was admitted with hyperglycemia. During thyroid examination, clouding of consciousness occurred with unilateral palpation. Asystole was documented for 4.8 seconds and suspected for 7 seconds upon carotid sinus massage. A cardioverter defibrillator was implanted. Carotid sinus hypersensitivity should be kept in mind when examining diabetic patients.

  19. Cardiac arrhythmias in hypokalemic periodic paralysis: Hypokalemia as only cause?

    Science.gov (United States)

    Stunnenberg, Bas C; Deinum, Jaap; Links, Thera P; Wilde, Arthur A; Franssen, Hessel; Drost, Gea

    2014-09-01

    It is unknown how often cardiac arrhythmias occur in hypokalemic periodic paralysis (HypoPP) and if they are caused by hypokalemia alone or other factors. This systematic review shows that cardiac arrhythmias were reported in 27 HypoPP patients. Cases were confirmed genetically (13 with an R528H mutation in CACNA1S, 1 an R669H mutation in SCN4A) or had a convincing clinical diagnosis of HypoPP (13 genetically undetermined) if reported prior to the availability of genetic testing. Arrhythmias occurred during severe hypokalemia (11 patients), between attacks at normokalemia (4 patients), were treatment-dependent (2 patients), or unspecified (10 patients). Nine patients died from arrhythmia. Convincing evidence for a pro-arrhythmogenic factor other than hypokalemia is still lacking. The role of cardiac expression of defective skeletal muscle channels in the heart of HypoPP patients remains unclear. Clinicians should be aware of and prevent treatment-induced cardiac arrhythmia in HypoPP.

  20. Macrolide antibiotics and the risk of cardiac arrhythmias.

    Science.gov (United States)

    Albert, Richard K; Schuller, Joseph L

    2014-05-15

    Randomized, controlled trials have demonstrated that chronic therapy with macrolide antibiotics reduces the morbidity of patients with cystic fibrosis, non-cystic fibrosis bronchiectasis, chronic obstructive pulmonary disease, and nontuberculous mycobacterial infections. Lower levels of evidence indicate that chronic macrolides are also effective in treating patients with panbronchiolitis, bronchiolitis obliterans, and rejection after lung transplant. Macrolides are known to cause torsade des pointes and other ventricular arrhythmias, and a recent observational study prompted the FDA to strengthen the Warnings and Precautions section of azithromycin drug labels. This summary describes the electrophysiological effects of macrolides, reviews literature indicating that the large majority of subjects experiencing cardiac arrhythmias from macrolides have coexisting risk factors and that the incidence of arrhythmias in absence of coexisting risk factors is very low, examines recently published studies describing the relative risk of arrhythmias from macrolides, and concludes that this risk has been overestimated and suggests an approach to patient evaluation that should reduce the relative risk and the incidence of arrhythmias to the point that chronic macrolides can be used safely in the majority of subjects for whom they are recommended.

  1. Genetic aspects of sick sinus syndrome

    OpenAIRE

    Chernova A.A.; Nikulina S.Yu.; Tret’yakova S.S.; Voyevoda M.I.; Maksimov V.N.; Chernov V.N.

    2013-01-01

    Aim. To study the association between polymorphic allelic variants of the alpha-2В-adrenoreceptor gene (ADRA2B), endothelial nitric oxide synthase gene (NOS3), connexin protein gene 40 (Cx40), cardiac myosin heavy chain gene (MYH6), and voltage-gated sodium channels gene (SCN5A) and development of the idiopathic sick sinus syndrome. Methods. 14 probands with primary symptoms of sick sinus syndrome and their 110 relatives of the I–III degree kinship were examined. At the Berzon City Clinical H...

  2. Pilonidal sinus (Nadi vrana): A case study

    OpenAIRE

    2010-01-01

    Pilonidal sinus (PNS) occurs in the cleavage between the buttocks (natal cleft) and can cause discomfort, embarrassment and absence from work for thousands of young people (mostly men) annually. The incidence of the disease is calculated to be 26 per 100,000 people. It occurs 2.2 times more often in men than in women. Age at presentation is 21 years for men and 19 years for women this case report describes a 22-year-old man with pilonidal sinus who was treated with ksharasutra.

  3. Pilonidal sinus (Nadi vrana): A case study.

    Science.gov (United States)

    Shinde, Pradeep; Toshikhane, Hemant

    2010-07-01

    Pilonidal sinus (PNS) occurs in the cleavage between the buttocks (natal cleft) and can cause discomfort, embarrassment and absence from work for thousands of young people (mostly men) annually. The incidence of the disease is calculated to be 26 per 100,000 people. It occurs 2.2 times more often in men than in women. Age at presentation is 21 years for men and 19 years for women this case report describes a 22-year-old man with pilonidal sinus who was treated with ksharasutra.

  4. Thoracic sinuses in HIV a diagnostic dilemma

    Directory of Open Access Journals (Sweden)

    Pai V

    2003-01-01

    Full Text Available A male aged 57 years with multiple discharging sinuses on both sides of chest, multiple ulcers on the back, painful ankylosis of right shoulder since 2 months. Chest examination showed reduced expansion and decreased breath sounds on right side. Large boggy swelling on right hemithorax with multiple discharging sinuses was seen. VDRL was reactive in high dilutions and he was also ELISA - HIV positive. X-ray of chest showed few opacities in right lung field. A provisional diagnosis of Gumma - Syphilis/Tuberculous was considered. Sensorineural deafness was also present.

  5. Thoracic sinuses in HIV a diagnostic dilemma

    Directory of Open Access Journals (Sweden)

    Pai V

    2003-03-01

    Full Text Available A male aged 57 years with multiple discharging sinuses on both sides of chest, multiple ulcers on the back, painful ankylosis of right shoulder since 2 months. Chest examination showed reduced expansion and decreased breath sounds on right side. Large boggy swelling on right hemithorax with multiple discharging sinuses was seen. VDRL was reactive in high dilutions and he was also ELISA - HIV positive. X-ray of chest showed few opacities in right lung field. A provisional diagnosis of Gumma - Syphilis/Tuberculous was considered. Sensorineural deafness was also present.

  6. [Anorexia with sinus bradycardia: a case report].

    Science.gov (United States)

    Wang, Fang-fang; Xu, Ling; Chen, Bao-xia; Cui, Ming; Zhang, Yuan

    2016-02-18

    As anorexia patients always go to the psychiatric clinic, little is concerned about the occurrence of sinus bradycardia in these patients for cardiologists and psychiatrists. The aim of this paper is to discuss the relationship between anorexia and sinus bradycardia, and the feature analysis, differential diagnosis and therapeutic principles of this type of sinus bradycardia. We report a case of sinus bradycardia in an anorexia patient with the clinical manifestations, laboratory exams, auxiliary exams, therapeutic methods, and her prognosis, who was admitted to Peking University Third Hospital recently. The patient was a 19-year-old female, who had the manifestation of anorexia. She lost obvious weight in a short time (about 15 kg in 6 months), and her body mass index was 14.8 kg/m(2). The patient felt apparent palpitation, chest depression and short breath, without dizziness, amaurosis or unconsciousness. Vitals on presentation were notable for hypotension, and bradycardia. The initial exam was significant for emaciation, but without lethargy or lower extremity edema. The electrocardiogram showed sinus bradycardia with her heart rate being 32 beats per minute. The laboratory work -up revealed her normal blood routine, electrolytes and liver function. But in her thyroid function test, the free thyroid (FT) hormones 3 was 0.91 ng/L (2.3-4.2 ng/L),and FT4 was 8.2 ng/L (8.9-18.0 ng/L), which were all lower; yet the thyroid stimulating hormone (TSH) was normal 1.48 IU/mL (0.55-4.78 IU/mL). Ultrasound revealed her normal thyroid. Anorexia is an eating disorder characterized by extremely low body weight, fear of gaining weight or distorted perception of body image, and amenorrhea. Anorexia patients who lose weight apparently in short time enhance the excitability of the parasympathetic nerve, and inhibit the sympathetic nerve which lead to the appearance of sinus bradycardia, and functional abnormalities of multiple systems such as hypothyroidism. But this kind of sinus

  7. Respiratory Sinus Arrhythmia and Heart Period in Infancy as Correlates of Later Oppositional Defiant and Callous-Unemotional Behaviors

    Science.gov (United States)

    Wagner, Nicholas; Mills-Koonce, Roger; Willoughby, Michael; Propper, Cathi; Rehder, Peter; Gueron-Sela, Noa

    2017-01-01

    Extant literature suggests that oppositional defiant disorder (ODD) and callous-unemotional (CU) behaviors in childhood and adolescence are associated with distinct patterns of psychophysiological functioning, and that individual differences in these patterns have implications for developmental pathways to disorder. Very little is known about the…

  8. The Matching of Sinus Arrhythmia to Respiration: Are Trauma Patients without Serious Injury Comparable to Healthy Laboratory Subjects?

    Science.gov (United States)

    2014-08-01

    same as that of the IP waveforms) using cubic spline interpolation . Next, to count the SA cycles within the RRI waveform, we treated the RRI time...method to construct the R-R interval (RRI) time series used to estimate the SA rate. First, we upsampled each ECG segment to 2000 Hz by cubic spline ...19a. NAME OF RESPONSIBLE PERSON a. REPORT unclassified b . ABSTRACT unclassified c. THIS PAGE unclassified Standard Form 298 (Rev. 8-98

  9. Current concepts of anatomy and electrophysiology of the sinus node.

    Science.gov (United States)

    Murphy, Cliona; Lazzara, Ralph

    2016-06-01

    The sinoatrial node, or sinus node, of humans is the principal pacemaker of the heart. Over the last century, studies have unraveled the complex molecular architecture of the sinus node and the expression of unique ion channels within its specialized myocytes. Aim of this review is to describe the embriology, the anatomy, the histology and the electrophisiology of the sinus node.

  10. Different types of fungal sinusitis occurring concurrently: implications for therapy.

    Science.gov (United States)

    Rupa, V; Thomas, Meera

    2013-02-01

    The purpose of this study is to describe the clinical and histopathological features, management and outcome of a series of patients with simultaneous occurrence of invasive and non-invasive fungal sinusitis (mixed fungal sinusitis). The histopathological records of patients with fungal sinusitis seen over the last 6 years were reviewed. The clinical, histopathological, treatment and follow up details of all cases with mixed fungal sinusitis were noted. Six cases of mixed fungal sinusitis with concurrent occurrence of chronic granulomatous fungal sinusitis and allergic fungal sinusitis (AFS) were seen during the study period. Most (83.3 %) had bilateral disease. All patients had undergone prior endoscopic sinus surgery at least once within the previous 2 years. Histopathological features showed predominance of invasive disease in half the patients. Except for one patient who did not report for follow up, all patients with predominant chronic granulomatous fungal sinusitis received systemic antifungal therapy and inhaled steroids. Those with predominant features of AFS received oral and inhaled steroids. Five patients with mixed fungal sinusitis who had follow up ranging from 6 months to 5 years were disease free following treatment. Mixed fungal sinusitis should be recognized by the surgeon and pathologist as a separate category of fungal sinusitis whose treatment depends on accurate histological diagnosis. A good outcome may be expected with appropriate therapy.

  11. Sinusitis associated with nasogastric intubation in 3 horses.

    Science.gov (United States)

    Nieto, Jorge E; Yamout, Sawsan; Dechant, Julie E

    2014-06-01

    Sinusitis has not been reported as a complication of long-term nasogastric intubation in horses. We describe 3 horses that developed nosocomial sinusitis following abdominal surgery with associated perioperative nasogastric intubation. Sinusitis was suspected by the presence of malodorous discharge and confirmed by percussion, upper airway endoscopy, radiographs (n = 3), and bacterial culture (n = 1).

  12. [Age associated clinical features of odontogenic maxillary sinusitis].

    Science.gov (United States)

    Iordanishvili, A K; Nikitenko, V V; Balin, D V

    2013-01-01

    Detailed analysis of odontogenic maxillary sinusitis clinical course allowed identifying clinical features of the disease specific for elderly and senile patients. The paper describes the peculiarities of odontogenic maxillary sinusitis in elderly and senile patients including those having oroantral sinus tract.

  13. [Odontogenic maxillary sinusitis in elderly and old age].

    Science.gov (United States)

    Nikitenko, V V; Iordanishvili, A K; Ryzhak, G A

    2013-01-01

    On the basis of a detailed analysis of the clinical picture of odontogenic maxillary sinusitis the peculiarities of its flow in elderly and senile patients are demonstrated. The causes of odontogenic inflammation of the maxillary sinuses, the clinical features of inflammation of the maxillary sinus in older age groups, including those with oroantral communication are shown.

  14. Laboratory Markers of Ventricular Arrhythmia Risk in Renal Failure

    Directory of Open Access Journals (Sweden)

    Ioana Mozos

    2014-01-01

    Full Text Available Sudden cardiac death continues to be a major public health problem. Ventricular arrhythmia is a main cause of sudden cardiac death. The present review addresses the links between renal function tests, several laboratory markers, and ventricular arrhythmia risk in patients with renal disease, undergoing or not hemodialysis or renal transplant, focusing on recent clinical studies. Therapy of hypokalemia, hypocalcemia, and hypomagnesemia should be an emergency and performed simultaneously under electrocardiographic monitoring in patients with renal failure. Serum phosphates and iron, PTH level, renal function, hemoglobin and hematocrit, pH, inflammatory markers, proteinuria and microalbuminuria, and osmolarity should be monitored, besides standard 12-lead ECG, in order to prevent ventricular arrhythmia and sudden cardiac death.

  15. Nonlinear interpolation fractal classifier for multiple cardiac arrhythmias recognition

    Energy Technology Data Exchange (ETDEWEB)

    Lin, C.-H. [Department of Electrical Engineering, Kao-Yuan University, No. 1821, Jhongshan Rd., Lujhu Township, Kaohsiung County 821, Taiwan (China); Institute of Biomedical Engineering, National Cheng-Kung University, Tainan 70101, Taiwan (China)], E-mail: eechl53@cc.kyu.edu.tw; Du, Y.-C.; Chen Tainsong [Institute of Biomedical Engineering, National Cheng-Kung University, Tainan 70101, Taiwan (China)

    2009-11-30

    This paper proposes a method for cardiac arrhythmias recognition using the nonlinear interpolation fractal classifier. A typical electrocardiogram (ECG) consists of P-wave, QRS-complexes, and T-wave. Iterated function system (IFS) uses the nonlinear interpolation in the map and uses similarity maps to construct various data sequences including the fractal patterns of supraventricular ectopic beat, bundle branch ectopic beat, and ventricular ectopic beat. Grey relational analysis (GRA) is proposed to recognize normal heartbeat and cardiac arrhythmias. The nonlinear interpolation terms produce family functions with fractal dimension (FD), the so-called nonlinear interpolation function (NIF), and make fractal patterns more distinguishing between normal and ill subjects. The proposed QRS classifier is tested using the Massachusetts Institute of Technology-Beth Israel Hospital (MIT-BIH) arrhythmia database. Compared with other methods, the proposed hybrid methods demonstrate greater efficiency and higher accuracy in recognizing ECG signals.

  16. Ion channelopathy and hyperphosphorylation contributing to cardiac arrhythmias

    Institute of Scientific and Technical Information of China (English)

    De-zai DAI; Feng YU

    2005-01-01

    The occurrence of cardiac arrhythmias is related to the abnormality of ion channels not only in sarcolemma but also in the sarcoplasmic reticulum, which regulates the process of calcium release and up-take intracellularly. Patterns of ion channelopathy in the sarcolemma can be divided into single channel disorder from gene mutations and multiple channels disorder in a diseased hypertrophied heart. Abnormal RyR2, FKBP12.6, SERCA2a, and PLB are also involved in the initiation of cardiac arrhythmias. Maladjustment by hyperphosphorylation on the ion channels in the sarcolemma and RyR2-FKBP12.6 and SERCA2a-PLB is discussed. Hyperphosphorylation, which is the main abnormality upstream to ion channels, can be targeted for suppressing the deterioration of ion channelopathy in terms of new drug discovery in the treatment and prevention of malignant cardiac arrhythmias.

  17. Role of adipose tissue in the pathogenesis of cardiac arrhythmias.

    Science.gov (United States)

    Samanta, Rahul; Pouliopoulos, Jim; Thiagalingam, Aravinda; Kovoor, Pramesh

    2016-01-01

    Epicardial adipose tissue is present in normal healthy individuals. It is a unique fat depot that, under physiologic conditions, plays a cardioprotective role. However, excess epicardial adipose tissue has been shown to be associated with prevalence and severity of atrial fibrillation. In arrhythmogenic right ventricular cardiomyopathy and myotonic dystrophy, fibrofatty infiltration of the myocardium is associated with ventricular arrhythmias. In the ovine model of ischemic cardiomyopathy, the presence of intramyocardial adipose or lipomatous metaplasia has been associated with increased propensity to ventricular tachycardia. These observations suggest a role of adipose tissue in the pathogenesis of cardiac arrhythmias. In this article, we review the role of cardiac adipose tissue in various cardiac arrhythmias and discuss the possible pathophysiologic mechanisms.

  18. Cardiac Arrhythmias in a Septic ICU Population: A Review

    Directory of Open Access Journals (Sweden)

    Schwartz Andrei

    2015-10-01

    Full Text Available Progressive cardiovascular deterioration plays a central role in the pathogenesis of multiple organ failure (MOF caused by sepsis. Evidence of various cardiac arrhythmias in septic patients has been reported in many published studies. In the critically ill septic patients, compared to non-septic patients, new onset atrial fibrillation episodes are associated with high mortality rates and poor outcomes, amongst others being new episodes of stroke, heart failure and long vasopressor usage. The potential mechanisms of the development of new cardiac arrhythmias in sepsis are complex and poorly understood. Cardiac arrhythmias in critically ill septic patients are most likely to be an indicator of the severity of pre-existing critical illness.

  19. Compression of the posterior fossa venous sinuses by epidural hemorrhage simulating venous sinus thrombosis: CT and MR findings

    Energy Technology Data Exchange (ETDEWEB)

    Singh, Sumit; Ramakrishnaiah, Raghu H.; Hegde, Shilpa V.; Glasier, Charles M. [University of Arkansas for Medical Sciences, Pediatric Radiology, Little Rock, AR (United States)

    2016-01-15

    Posterior fossa dural venous sinus thrombus is a well-described complication of head trauma, especially when fracture crosses the dural sinus grooves or in association with epidural hemorrhage. We have found that post-traumatic posterior fossa epidural hematoma compressing a dural venous sinus can mimic dural venous thrombus. To discuss the CT and MRI findings of posterior fossa epidural hemorrhages simulating sinus thrombosis, to make radiologists aware of this important imaging pitfall. We describe radiologic findings in four children in whom a posterior fossa epidural hemorrhage mimicked dural venous sinus thrombus. Routine CT head and CT venography were obtained on Toshiba volume and helical CT scanners. MRI and MR venography were performed on a Philips scanner. In all cases there was medial displacement and compression of the posterior fossa dural venous sinuses without intraluminal thrombosis. The epidural hemorrhage was seen tracking along sinus grooves in the occipital bone, peeling the dura containing the sinuses from the calvarium and compressing the sinus, simulating thrombosis on axial CT views. Both venous sinus thrombosis and posterior fossa epidural hemorrhages in children are well-described complications of head trauma. Posterior fossa epidural hemorrhage can mimic a sinus thrombus by compressing and displacing the sinuses. It is important to recognize this pitfall because treatment of a suspected thrombus with anticoagulation can worsen epidural hemorrhage. (orig.)

  20. The incidence of maxillary sinus membrane perforation during endoscopically assessed crestal sinus floor elevation: a pilot study.

    Science.gov (United States)

    Garbacea, Antoanela; Lozada, Jaime L; Church, Christopher A; Al-Ardah, Aladdin J; Seiberling, Kristin A; Naylor, W Patrick; Chen, Jung-Wei

    2012-08-01

    Transcrestal sinus membrane elevation is a surgical procedure performed to increase the bone volume in the maxillary sinus cavity. Because of visual limitations, the potential for maxillary sinus membrane perforations may be greater than with the lateral approach technique. The aim of this study was to macroscopically investigate ex vivo the occurrence of sinus membrane perforation during surgery using 3 transcrestal sinus floor elevation methods. Twenty fresh human cadaver heads, with 40 intact sinuses, were used for simultaneous sinus membrane elevation, placement of graft material, and dental implants. Real-time sinus endoscopy, periapical digital radiographs, and cone-beam computerized tomography (CBCT) images were subsequently used to evaluate the outcome of each surgical procedure. Perforation rates for each of the 3 techniques were then compared using a significance level of P sinus endoscope noted a higher frequency of perforations at the time of implant placement as compared with instrumentation or graft insertion, the difference was not statistically significant (P = .04). The CBCT readings were judged to be more accurate for identifying evidence of sinus perforations than the periapical radiographs when compared with the direct visualization with the endoscope. This pilot study demonstrated that a sinus membrane perforation can occur at any time during the sinus lift procedure, independent of the surgical method used.

  1. Controlled Exposures to Air Pollutants and Risk of Cardiac Arrhythmia

    Science.gov (United States)

    Watts, Simon J.; Hunter, Amanda J.; Shah, Anoop S.V.; Bosson, Jenny A.; Unosson, Jon; Barath, Stefan; Lundbäck, Magnus; Cassee, Flemming R.; Donaldson, Ken; Sandström, Thomas; Blomberg, Anders; Newby, David E.; Mills, Nicholas L.

    2014-01-01

    Background: Epidemiological studies have reported associations between air pollution exposure and increases in cardiovascular morbidity and mortality. Exposure to air pollutants can influence cardiac autonomic tone and reduce heart rate variability, and may increase the risk of cardiac arrhythmias, particularly in susceptible patient groups. Objectives: We investigated the incidence of cardiac arrhythmias during and after controlled exposure to air pollutants in healthy volunteers and patients with coronary heart disease. Methods: We analyzed data from 13 double-blind randomized crossover studies including 282 participants (140 healthy volunteers and 142 patients with stable coronary heart disease) from whom continuous electrocardiograms were available. The incidence of cardiac arrhythmias was recorded for each exposure and study population. Results: There were no increases in any cardiac arrhythmia during or after exposure to dilute diesel exhaust, wood smoke, ozone, concentrated ambient particles, engineered carbon nanoparticles, or high ambient levels of air pollution in either healthy volunteers or patients with coronary heart disease. Conclusions: Acute controlled exposure to air pollutants did not increase the short-term risk of arrhythmia in participants. Research employing these techniques remains crucial in identifying the important pathophysiological pathways involved in the adverse effects of air pollution, and is vital to inform environmental and public health policy decisions. Citation: Langrish JP, Watts SJ, Hunter AJ, Shah AS, Bosson JA, Unosson J, Barath S, Lundbäck M, Cassee FR, Donaldson K, Sandström T, Blomberg A, Newby DE, Mills NL. 2014. Controlled exposures to air pollutants and risk of cardiac arrhythmia. Environ Health Perspect 122:747–753; http://dx.doi.org/10.1289/ehp.1307337 PMID:24667535

  2. Circadian arrhythmia dysregulates emotional behaviors in aged Siberian hamsters.

    Science.gov (United States)

    Prendergast, Brian J; Onishi, Kenneth G; Patel, Priyesh N; Stevenson, Tyler J

    2014-03-15

    Emotional behaviors are influenced by the circadian timing system. Circadian disruptions are associated with depressive-like symptoms in clinical and preclinical populations. Circadian rhythm robustness declines markedly with aging and may contribute to susceptibility to emotional dysregulation in aged individuals. The present experiments used a model of chronic circadian arrhythmia generated noninvasively, via a series of circadian-disruptive light treatments, to investigate interactions between circadian desynchrony and aging on depressive- and anxiety-like behaviors, and on limbic neuroinflammatory gene expression that has been linked with emotionality. We also examined whether a social manipulation (group housing) would attenuate effects of arrhythmia on emotionality. In aged (14-18 months of age) male Siberian hamsters, circadian arrhythmia increased behavioral despair and decreased social motivation, but decreased exploratory anxiety. These effects were not evident in younger (5-9 months of age) hamsters. Social housing (3-5 hamsters/cage) abolished the effects of circadian arrhythmia on emotionality. Circadian arrhythmia alone was without effect on hippocampal or cortical interleukin-1β (IL-1β) and indoleamine 2,3-dioxygenase (Ido) mRNA expression in aged hamsters, but social housing decreased hippocampal IL-1β and Ido mRNAs. The data demonstrate that circadian disruption can negatively impact affective state, and that this effect is pronounced in older individuals. Although clear associations between circadian arrhythmia and constitutive limbic proinflammatory activity were not evident, the present data suggest that social housing markedly inhibits constitutive hippocampal IL-1β and Ido activity, which may contribute to the ameliorating effects of social housing on a number of emotional behaviors.

  3. 慢性肺源性心脏病并发心律失常68例临床诊断与治疗%Clinical Diagnosis and Treatment of 68 Cases of Chronic Pulmonary Heart Disease Complicated With Arrhythmia

    Institute of Scientific and Technical Information of China (English)

    许文华; 李志军

    2015-01-01

    Objective To investigate the clinical diagnosis and treatment of chronic pulmonary heart disease with arrhythmia. Methods The clinical data of 68 patients with chronic pulmonary heart disease with arrhythmia were retrospectively analyzed. Results Manifestation of cardiac arrhythmias with sinus bradycardia slow, sinus tachycardia, speed, atrial flutter, atrial fibrillation, paroxysmal supraventricular tachycardia tachycardia, paroxysmal atrial tachycardia, speed and other kinds of. Conclusion The clinical analysis of chronic pulmonary heart disease with arrhythmia patients, need to be based on the ECG in order to understand the use of how to diagnose and treatment.%目的:探讨慢性肺源性心脏病并发心律失常的临床诊断和治疗。方法对我院收治的68例慢性肺源性心脏病并发心律失常患者的临床资料进行回顾性分析。结果心律失常的表现类型有窦性心动过缓、窦性心动过速、心房扑动、心房颤动、阵发性室性心动过速、阵发性房性心动过速等多种。结论临床分析慢性肺源性心脏病并发心律失常患者时,需要依据心电图以便深入了解诊断和治疗的方法。

  4. Sinoatrial node dysfunction induces cardiac arrhythmias in diabetic mice

    DEFF Research Database (Denmark)

    Soltysinska, Ewa; Speerschneider, Tobias; Winther, Sine V

    2014-01-01

    and electrophysiological characteristics were investigated in diabetic db/db and control db/+mice.ResultsWe found improved contractile function and impaired filling dynamics of the heart in db/db mice, relative to db/+controls. Electrophysiologically, we observed comparable heart rates in the two mouse groups, but SAN...... recovery time was prolonged in diabetic mice. Adrenoreceptor stimulation increased heart rate in all mice and elicited cardiac arrhythmias in db/db mice only. The arrhythmias emanated from the SAN and were characterized by large RR fluctuations. Moreover, nerve density was reduced in the SAN region...

  5. Cardiac arrhythmias and conduction defects in systemic sclerosis.

    Science.gov (United States)

    Vacca, Alessandra; Meune, Christophe; Gordon, Jessica; Chung, Lorinda; Proudman, Susanna; Assassi, Shervin; Nikpour, Mandana; Rodriguez-Reyna, Tatiana S; Khanna, Dinesh; Lafyatis, Robert; Matucci-Cerinic, Marco; Distler, Oliver; Allanore, Yannick

    2014-07-01

    Signs and symptoms of arrhythmias or conduction defects are frequently reported in patients with SSc. These rhythm disorders may have several origins (i.e., related to primary heart involvement, pericardial disease, valvular regurgitation or pulmonary arterial hypertension) and may negatively affect the overall prognosis of these patients. It is therefore important to identify patients at high risk for cardiac arrhythmias with a complete cardiological evaluation and to identify the underlying heart disease, including SSc-related myocardial involvement. In addition, some therapeutic options in SSc patients may differ from those recommended in other populations.

  6. An Unusual Cause of Cardiac Arrhythmias; Mediastinal Schwannoma

    Directory of Open Access Journals (Sweden)

    Serdar Ozkan

    2014-02-01

    Full Text Available Schwannomas are rare tumours, which originated from neural crest cells. Thoracic schwannomas are very rare and most commonly seen in posterior mediastinum. In a 39 year old female patient whose tumor story dated back to 4 years, a 14 cm extra parenchymal intrathoracic tumor was observed to put minimal pressure on the heart. The patient%u2019s arrhythmia, who had preoperative complaints of palpitations, was improved after tumor excision. Although schwannomas generally are asympthomatic masses, they can lead mass effect according to their localization. In this study, patient with thoracic schwannoma presented with cardiac arrhythmia which never reported in literature so far.

  7. [Congenital left sinus of Valsalva aneurysm].

    Science.gov (United States)

    Simões, M V; Figueira, R R; Barbato, D; Miziara, H L

    1991-01-01

    Two cases of left sinus of Valsalva congenital aneurysm (SVCA), incidentally found are described. The authors call attention on rarity of them, and present new concepts about their morphogenesis and incidence. They also suggested a higher incidence of asymptomatic and undiagnosed cases of SVCA should be considered.

  8. Acute otitis media and acute bacterial sinusitis.

    Science.gov (United States)

    Wald, Ellen R

    2011-05-01

    Acute otitis media and acute bacterial sinusitis are 2 of the most common indications for antimicrobial agents in children. Together, they are responsible for billions of dollars of health care expenditures. The pathogenesis of the 2 conditions is identical. In the majority of children with each condition, a preceding viral upper respiratory tract infection predisposes to the development of the acute bacterial complication. It has been shown that viral upper respiratory tract infection predisposes to the development of acute otitis media in 37% of cases. Currently, precise microbiologic diagnosis of acute otitis media and acute bacterial sinusitis requires performance of tympanocentesis in the former and sinus aspiration in the latter. The identification of a virus from the nasopharynx in either case does not obviate the need for antimicrobial therapy. Furthermore, nasal and nasopharyngeal swabs are not useful in predicting the results of culture of the middle ear or paranasal sinus. However, it is possible that a combination of information regarding nasopharyngeal colonization with bacteria and infection with specific viruses may inform treatment decisions in the future.

  9. Orbital Complications of Sinusitis A Review

    Directory of Open Access Journals (Sweden)

    Balasubramanian Thiagarajan

    2014-08-01

    Full Text Available Abstract: Introduction: Despite availability of excellent antibiotics, orbital complications’ following sinusitis is rather common. With the emergence of fungal sinusitis orbital involvement by the disease is getting frequent. Prevalence of life style disorders like diabetes mellitus has added to the woes. This article attempts to review the entire gamut of orbital complications following sinus infections. Aim: This study aims at analyzing orbital complications following sinusitis at Government Stanley Medical College Hospital during the period 2009 – 2013. Study design: Retrospective study Methodology: Cases with rhinosinusitis treated in our Institution during the period 2009-2013 were taken up for analysis. 112 patients were chosen for the study. Their case records were analyzed. CT scan images taken during the time of admission were also evaluated. Patients with orbitalcomplications following rhinosinusitis were included. Chandler’s classification was used to categorize the stage of disease. Results: 112 patients were included in the study. 76 Male patients 36 Female patients 26 patients developed orbital complications Number of male patients with orbital complication – 22 Number of female patients with orbital complication – 4 Number of patients who died due to complications - 2 Conclusion: High degree of suspicion, early diagnosis and aggressive medical management of Chandler’s categories I and II will go a long way in preventing irreparable damage to vision. All our patients were managed initially with parenteral antibiotics. Patients who do not show improvement even after 4 days of antibiotic therapy were taken up for surgical management.

  10. Sinusitis from Nontuberculous Mycobacteria in Tap Water

    Centers for Disease Control (CDC) Podcasts

    2012-12-21

    Dr. Wellington S. Tichenor. Associate Clinical Professor of Medicine at New York Medical College and in private practice in Manhattan, New York, discusses his investigation of sinusitis from nontuberculous mycobacteria in tap water.  Created: 12/21/2012 by National Center for Emerging and Zoonotic Infectious Diseases (NCEZID).   Date Released: 12/31/2012.

  11. Osteoma of the skull base and sinuses

    NARCIS (Netherlands)

    C. Georgalas; J. Goudakos; W.J. Fokkens

    2011-01-01

    Osteomata of the frontal and ethmoid sinuses have traditionally been surgically removed via external approaches. However, endoscopic techniques have increasingly been used for the surgical management of selected cases. Advances in visualization and instrumentation, as well as the excellent access pr

  12. [Sinus-node recovery time in the sick-sinus syndrome (author's transl)].

    Science.gov (United States)

    Delius, W; Wirtzfeld, A; Sebening, H; Blömer, H

    1975-11-01

    Sinus-node recovery times were measured, before and after atropine administration, in 21 patients with the clinical diagnosis of sick-sinus syndrome. The results were compared with those reported by other workers. It is concluded that sinus-node recovery times of more than 1 400 ms are most likely due to sinus-node damage (sick-sinus syndrome); normal recovery times are rare in such patients. The diagnosis of the syndrome is strengthened if the recovery time remains abnormally long even after atropine. Further useful diagnostic information can be obtained from the total stimulation phase (duration until restoration of the basic rhythm), this being overall longer in patients with the syndrome than in normal subjects. The increased incidence of A-V nodal rhythms before restoration of the basic rhythm is another indication of organic damage to the sinus node, especially if it also occurs after atropine. The significance of a recovery time which is prolonged before but normal after atropine is less clear: a raised sensitivity to vagotonic influences may be the determining factor here.

  13. Sinus node function after autonomic blockade in normals and in sick sinus syndrome.

    Science.gov (United States)

    Sethi, K K; Jaishankar, S; Balachander, J; Bahl, V K; Gupta, M P

    1984-06-01

    Electrophysiologic studies were performed in 10 normals and 33 patients with sick sinus syndrome before and after total autonomic blockade with propranolol and atropine. In normals both corrected sinus node recovery time (SNRT) and sinoatrial conduction time (SACT) decreased significantly after autonomic blockade. In patients with sick sinus syndrome the corrected SNRT was abnormal (greater than 450 msec) in 16 (48.5%) cases before and 25 (76%) cases (greater than 285 msec) after autonomic ablation (P less than 0.02). Thirteen of 21 patients (62%) with normal intrinsic heart rate and all 12 cases with abnormally low intrinsic rate after autonomic blockade had abnormal corrected SNRT (greater than 285 msec). Mean SACT measured in 19 patients also shortened significantly following pharmacologic denervation. During control it was prolonged (greater than 226 msec) in 8 patients (44%). After autonomic blockade 2 of 13 patients with normal intrinsic heart rate and 3 of 6 with low intrinsic rate showed abnormal SACT (greater than 151 msec). The data suggest that the majority (76%) of patients with sick sinus syndrome have intrinsic abnormality of sinus node automaticity while in a minority (24%) disturbed autonomic regulation is the pathogenetic mechanism. Patients with normal intrinsic heart rate usually have normal intrinsic SACT, while a significant proportion of those with low intrinsic rate have abnormal perinodal conduction. Subjects with abnormal intrinsic heart rate have more severe disturbances of sinus node function than those with normal intrinsic rate.

  14. Arrhythmias and conduction abnormalities in children after repair of tetralogy of Fallot

    Directory of Open Access Journals (Sweden)

    Kuzevska-Maneva Konstandina

    2005-01-01

    Full Text Available Aim. To find out types and frequency of cardiac arrhythmias and conduction abnormalities in the group of children who underwent surgery for tetralogy of Fallot (TOF. Methods. Fortysix pedicatric patients who underwent a complete repair of TOF at the age of 1 to 13 (mean 2.89 ± 2.36 were studied. Thirty-eight (82.60% had total correction and 8 (17.40% had palliative operation first, and total correction afterwards. Twenty-four-hour Holter ECG monitoring was performed in all 46 pediatric patients aged from 1 to 16 yrs (mean 6.48 ± 4.04 after surgery as follows: in 1 patient (2.17% after a year, in 20 patients (43.47% after 2 to 5 years and in 25 patients (54.34% after 5 years. Mean age of patients on Holter monitoring was 9.25 ± 4.39 (range 4−19. Twenty of them (43.47% were girls and 28 (56.53% were boys. All the patients were evaluated by standard methods (clinical signs, clinical findings, ECG before surgery, ECG before Holter monitoring and 2D Doppler echocardiography. Results. Types of heart rhythm found out by Holter monitoring were: sinus nodus dysfunction in 1 child (2.17%, significant premature atrial contraction (PAC in 8 (17.39%, supraventricular paroxysmal tachycardia in 3 (6.53%, transient nodal rhythm in 2 (4.34%, premature ventricular contraction (PVC Lown grade I-III in 9 (19.56% and Lown grade IV in 2 (4.34, atrioventricular (AV block grade I in 2, right bundle branch block (RBBB in all 46 (100% and RBBB + left anterior hemiblock (LAH in 4 (8.96%. There was no presence of atrial flutter, ventricular tachycardia or complete AV block. None of them experienced sudden death. Using cross procedure statistical methods, it was found that all the patients with PVC had right ventricular dilatation. There was no relation of other types of arrhythmia found on Holter monitoring to the other parameters from echocardiography, neither to the other standard methods. Children did not need the pace-maker, but 36.95% of the them required

  15. Dentigerous cyst associated with a displaced tooth in the maxillary sinus: an unusual cause of recurrent sinusitis in an adolescent.

    Science.gov (United States)

    Prabhu, Sanjay P; Padwa, Bonnie L; Robson, Caroline D; Rahbar, Reza

    2009-10-01

    We report an unusual case of a displaced maxillary molar and associated dentigerous cyst within the maxillary sinus in an adolescent presenting as recurrent sinusitis. Although a rare cause of sinusitis in children, dentigerous cysts should be included in the differential diagnosis for causes of persistent or recurrent sinusitis in this age group. This report provides further evidence for obtaining imaging studies when managing pediatric sinusitis that does not respond to standard antibiotic therapy. We discuss management options for these lesions including the differential diagnoses and need for follow-up.

  16. Acute cardiac arrhythmias following surgery for congenital heart disease: mechanisms, diagnostic tools, and management.

    Science.gov (United States)

    Payne, Linda; Zeigler, Vicki L; Gillette, Paul C

    2011-06-01

    This article focuses on the management of those cardiac arrhythmias most commonly seen in the immediate postoperative period. They include ventricular tachycardia, ventricular fibrillation, atrial flutter, junctional ectopic tachycardia, bradycardia, and atrioventricular block. The mechanisms of cardiac arrhythmias are reviewed followed by a brief overview of the predominant acute arrhythmias, tools used for the diagnostic evaluation of these arrhythmias, management strategies, and, finally, nursing considerations.

  17. Comparison of Arrhythmias among Different Left Ventricular Geometric Patterns in Essential Hypertension

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    The differences of arrhythmias among distinct left ventricular geometric patterns in the patients with essential hypertension were studied. 179 patients with essential hypertension received 24 h dynamic ECG recording, ambulatory blood pressure monitoring, echocardiography examination, etc. According to the examinations, left ventricular geometric patterns and arrhythmias were identified. The comparison of morbidity of arrhythmias between the left ventricular remodeling group and the normal geometric pattern group was performed. The multiple stepwise regression analysis was carried out to identify the independent determinants of arrhythmias. After these predictors were controlled or adjusted, the severity of arrhythmias among different left ventricular geometric patterns was compared. It was found that the morbidity of atrial arrhythmia, ventricular arrhythmia and complex ventricular arrhythmias in the left ventricular remodeling group was significantly higher than in the normal geometric pattern group respectively. There were many independent factors influencing on arrhythmias in essential hypertension. Of all these factors, some indices of left ventricular anatomic structure, grade of hypertension, left atrial inner dimension, E/A, diastolic blood pressure load value at night and day average heart rate and so on were very important. After the above-mentioned factors were adjusted, the differences of the orders of arrhythmias between partial geometric patterns were reserved, which resulted from the differences of the geometric patterns. Many factors contributed to arrhythmias of essential hypertension, such as grade of hypertension, LVMI, LA, PWT and so on. The severity of arrhythmias was different in different left ventricular geometric patterns.

  18. Dofetilide: a new drug to control cardiac arrhythmia

    DEFF Research Database (Denmark)

    Elming, Hanne; Brendorp, Bente; Pedersen, Ole Dyg

    2003-01-01

    Atrial fibrillation (AF) is the most common cardiac arrhythmia. Mortality, and especially morbidity caused by AF, are major and growing health problems in the western world. AF is strongly associated with arterial hypertension, congestive heart failure, valvular heart disease, ischaemic heart...

  19. Is it Safe? Adverse drug effects and cardiac arrhythmias

    NARCIS (Netherlands)

    Varkevisser, R.

    2014-01-01

    The potentially life-threatening polymorphic ventricular arrhythmia Torsade de Pointes (TdP) generally occurs in the setting of delayed ventricular repolarization, as reflected on the ECG by a prolonged QT interval. A growing number of drugs are associated with QT prolongation and/or TdP, as a resul

  20. Reduction in dynamin-2 is implicated in ischaemic cardiac arrhythmias.

    Science.gov (United States)

    Shi, Dan; Xie, Duanyang; Zhang, Hong; Zhao, Hong; Huang, Jian; Li, Changming; Liu, Yi; Lv, Fei; The, Erlinda; Liu, Yuan; Yuan, Tianyou; Wang, Shiyi; Chen, Jinjin; Pan, Lei; Yu, Zuoren; Liang, Dandan; Zhu, Weidong; Zhang, Yuzhen; Li, Li; Peng, Luying; Li, Jun; Chen, Yi-Han

    2014-10-01

    Ischaemic cardiac arrhythmias cause a large proportion of sudden cardiac deaths worldwide. The ischaemic arrhythmogenesis is primarily because of the dysfunction and adverse remodelling of sarcolemma ion channels. However, the potential regulators of sarcolemma ion channel turnover and function in ischaemic cardiac arrhythmias remains unknown. Our previous studies indicate that dynamin-2 (DNM2), a cardiac membrane-remodelling GTPase, modulates ion channels membrane trafficking in the cardiomyocytes. Here, we have found that DNM2 plays an important role in acute ischaemic arrhythmias. In rat ventricular tissues and primary cardiomyocytes subjected to acute ischaemic stress, the DNM2 protein and transcription levels were markedly down-regulated. This DNM2 reduction was coupled with severe ventricular arrhythmias. Moreover, we identified that the down-regulation of DNM2 within cardiomyocytes increases the action potential amplitude and prolongs the re-polarization duration by depressing the retrograde trafficking of Nav1.5 and Kir2.1 channels. These effects are likely to account for the DNM2 defect-induced arrhythmogenic potentials. These results suggest that DNM2, with its multi-ion channel targeting properties, could be a promising target for novel antiarrhythmic therapies.

  1. Electrocardiographic abnormalities and cardiac arrhythmias in structural brain lesions.

    Science.gov (United States)

    Katsanos, Aristeidis H; Korantzopoulos, Panagiotis; Tsivgoulis, Georgios; Kyritsis, Athanassios P; Kosmidou, Maria; Giannopoulos, Sotirios

    2013-07-31

    Cardiac arrhythmias and electrocardiographic abnormalities are frequently observed after acute cerebrovascular events. The precise mechanism that leads to the development of these arrhythmias is still uncertain, though increasing evidence suggests that it is mainly due to autonomic nervous system dysregulation. In massive brain lesions sympathetic predominance and parasympathetic withdrawal during the first 72 h are associated with the occurrence of severe secondary complications in the first week. Right insular cortex lesions are also related with sympathetic overactivation and with a higher incidence of electrocardiographic abnormalities, mostly QT prolongation, in patients with ischemic stroke. Additionally, female sex and hypokalemia are independent risk factors for severe prolongation of the QT interval which subsequently results in malignant arrhythmias and poor outcome. The prognostic value of repolarization changes commonly seen after aneurysmal subarachnoid hemorrhage, such as ST segment, T wave, and U wave abnormalities, still remains controversial. In patients with traumatic brain injury both intracranial hypertension and cerebral hypoperfusion correlate with low heart rate variability and increased mortality. Given that there are no firm guidelines for the prevention or treatment of the arrhythmias that appear after cerebral incidents this review aims to highlight important issues on this topic. Selected patients with the aforementioned risk factors could benefit from electrocardiographic monitoring, reassessment of the medications that prolong QTc interval, and administration of antiadrenergic agents. Further research is required in order to validate these assumptions and to establish specific therapeutic strategies.

  2. Postextrasystolic sinoatrial exit block in human sick sinus syndrome: demonstration by direct recording of sinus node electrograms.

    Science.gov (United States)

    Asseman, P; Berzin, B; Desry, D; Bauchart, J J; Reade, R; Leroy, O; Poncelet, P; Lekieffre, J; Thery, C

    1991-12-01

    Ten patients with sick sinus syndrome having repetitive sinus node electrograms during long postpacing pauses were studied during programmed atrial stimulation. Sinus node activity was recorded using a percutaneous catheter electrode. A sinus node electrogram was recorded before the return atrial beat in seven patients; it was similar to the sinus node electrogram observed during postpacing pauses and is clearly identified because sinoatrial conduction time was markedly prolonged following the atrial extra beat. Complete sinoatrial exit block occurred in four patients. (1) Sinus node electrograms were thus validated both during postpacing pauses and during programmed atrial stimulation in most patients with sick sinus syndrome. (2) Sinoatrial conduction time was markedly prolonged after one extrasystole, accounting for supracompensatory atrial return cycles. (3) If it were cumulative following multiple extrasystoles, this effect could constitute the electrophysiologic link between an abnormal response during programmed atrial stimulation and the complete sinoatrial block recorded during the pauses that follow rapid atrial pacing.

  3. Some anatomical variation of paranasal sinuses using sinus endoscopic approach on "cadaver" in Isfahan, Iran

    Directory of Open Access Journals (Sweden)

    Nezamoddin Berjis

    2014-01-01

    Full Text Available Background: Due to the anatomical variations of the paranasal sinuses and its great importance in sinus surgery, as this area is in very close proximity to vital structures including the optic nerve, carotid artery, and skull base, anatomical knowledge of this area is of high importance. The purpose of this study is defining a full and clear impression of paranasal sinus anatomy and its variations as a model for the human population of the country. Materials and Methods: This study was conducted on 45 cadavers in Isfahan forensic Medicine center during 2010 to 2011. Nasal and paranasal sinuses endoscopic dissection was done with (zero and 30 o lenses (Olympus. The methods of performed dissection were via the Stamberger technique. Results: This study showed that 88.9% (40 cases of middle turbinates were in a typical form, while 6.7% (3 cases were in medial and only 4.4% (2 cases were in the lateral form. We also observed 88.9% (40 cases with Agger nasi cells, 37.8% (17 cases with Onodi cells, 28.9% cases with accessory Ostia of maxillary sinus (13 cases, and 15.6% of the cases (7 cases with concha bullosa. The position of the maxillary sinus ostium was as follows. The inferior 1/3 of hiatus semilunaris in 38 (84.5%, superior 1/3 of hiatus semilunaris in 4 (4.4%, middle 1/3 of hiatus semilunaris in 5 (11.1%. The sphenoid ostia in 53.3% (24 cases were slit shape, 28.9% (13 cases oval, and 17.8% (18 cases were round shape. Conclusion : Our survey showed that the distance between anterior nasal spine and anterior wall of the sphenoid sinus was within 7.6 ± 0.2 cm SD.

  4. Atrial Arrhythmias in Astronauts - Summary of a NASA Summit

    Science.gov (United States)

    Barr, Yael R.; Watkins, Sharmila D.; Polk, J. D.

    2010-01-01

    Background and Problem Definition: To evaluate NASA s current standards and practices related to atrial arrhythmias in astronauts, Space Medicine s Advanced Projects Section at the Johnson Space Center was tasked with organizing a summit to discuss the approach to atrial arrhythmias in the astronaut cohort. Since 1959, 11 cases of atrial fibrillation, atrial flutter, or supraventricular tachycardia have been recorded among active corps crewmembers. Most of the cases were paroxysmal, although a few were sustained. While most of the affected crewmembers were asymptomatic, those slated for long-duration space flight underwent radiofrequency ablation treatment to prevent further episodes of the arrhythmia. The summit was convened to solicit expert opinion on screening, diagnosis, and treatment options, to identify gaps in knowledge, and to propose relevant research initiatives. Summit Meeting Objectives: The Atrial Arrhythmia Summit brought together a panel of six cardiologists, including nationally and internationally renowned leaders in cardiac electrophysiology, exercise physiology, and space flight cardiovascular physiology. The primary objectives of the summit discussions were to evaluate cases of atrial arrhythmia in the astronaut population, to understand the factors that may predispose an individual to this condition, to understand NASA s current capabilities for screening, diagnosis, and treatment, to discuss the risks associated with treatment of crewmembers assigned to long-duration missions or extravehicular activities, and to discuss recommendations for prevention or management of future cases. Summary of Recommendations: The summit panel s recommendations were grouped into seven categories: Epidemiology, Screening, Standards and Selection, Treatment of Atrial Fibrillation Manifesting Preflight, Atrial Fibrillation during Flight, Prevention of Atrial Fibrillation, and Future Research

  5. Association between Hypophosphatemia and Cardiac Arrhythmias in the Early Stage of Sepsis: Could Phosphorus Replacement Treatment Reduce the Incidence of Arrhythmias?

    Science.gov (United States)

    Schwartz, Andrei; Brotfain, Evgeni; Koyfman, Leonid; Kutz, Ruslan; Gruenbaum, Shaun E; Klein, Moti; Zlotnik, Alexander

    2014-06-01

    It is well known that new-onset arrhythmias are common in septic patients. It is thought that hypophosphatemia in the early stages of sepsis may contribute to the development of new arrhythmias. In this study, we hypothesized that intravenous (IV) phosphorus replacement may reduce the incidence of arrhythmias in critically ill patients. 34 adult septic patients with hypophosphatemia admitted to the general intensive care unit were treated with IV phosphorus replacement per ICU protocol, and the incidence of new arrhythmias were compared with 16 patients from previously published data. IV phosphorus replacement was associated with a significantly reduced incidence of arrhythmias (38% vs. 63%, p=0.04). There were no differences in observed mortality between subgroups, which may be due to the small sample size. This study demonstrated that IV phosphorus replacement might be effective in reducing the incidence of new arrhythmias in septic patients.

  6. [The role of carbocystein in the treatment of sinusitis].

    Science.gov (United States)

    Dąbrowski, Piotr; Leszczyńska, Małgorzata; Mielcarek-Kuchta, Daniela

    2012-09-01

    Chronic sinusitis is one of the most common presenting complaints of all doctor visits in the United States and Europe, with more than 13% of people affected in any given year. This disease has a wide range of impact on communities. Patients with recurrent or chronic sinusitis report a deteriorative sense of general health and vitality, when compared to general population. In our Department we perform about 600 functional endoscopic sinus surgeries (FESS) per year. Chronic rhinosinusitis represents a spectrum of inflammatory and infectious processes concurrently affecting the nose and paranasal sinuses. Among chronic paranasal sinusitis one must single out paranasal sinusitis with and without polyps. In the paranasal sinusitis patomechanism the blockage of natural ostium plays one of the most important roles. The closure of sinus proper ventilation passages leads to the triggering of many pathological occurrences within mucous membrane of this region. The treatment of paranasal sinusitis is diversified and involves a surgical procedure as well as anti-inflammatory and antiallergic drugs (medications) and mucolytics. Its purpose is to clear the nose through the elimination of bacterial infection, liquidating and removal of lying discharge and the restoration of the proper muco-ciliary transportation, and through this the improvement of local condition and faster recovery. In this work the usage of carboxycysteine to treat paranasal sinus conditions has been presented.

  7. Frontal sinus parameters in computed tomography and sex determination.

    Science.gov (United States)

    Akhlaghi, Mitra; Bakhtavar, Khadijeh; Moarefdoost, Jhale; Kamali, Artin; Rafeifar, Shahram

    2016-03-01

    The frontal sinus is a sturdy part of the skull that is likely to be retrieved for forensic investigations. We evaluated frontal sinus parameters in paranasal sinus computed tomography (CT) images for sex determination. The study was conducted on 200 normal paranasal sinus CT images of 100 men and 100 women of Persian origin. We categorized the studied population into three age groups of 20-34, 35-49 and ⩾ 50 years. The number of partial septa in the right frontal sinus and the maximum height and width were significantly different between the two sexes. The highest precision for sex determination was for the maximum height of the left frontal sinus (61.3%). In the 20-34 years age-group, height and width of the frontal sinus were significantly different between the two sexes and the height of the left sinus had the highest precision (60.8%). In the 35-49 years age-group, right anterior-posterior diameter had a sex determination precision of 52.3%. No frontal sinus parameter reached a statistically significant level for sex determination in the ⩾ 50 years age-group. The number of septa and scallopings were not useful in sex determination. Frontal sinus parameters did not have a high precision in sex determination among Persian adults.

  8. A PARALLEL STUDY OF RHINOGENIC AND ODONTOGENIC MAXILLARY SINUS DISEASE.

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    Elitsa Deliverska

    2012-02-01

    Full Text Available Because of its close anatomic relations with nosal and oral cavitis, the maxillary sinus is the place of most frequent inflammatory diseases of all paranasal sinuses. Introduction: The aim of this study was to establish differences in etiology and treatment of rhinogenic and odontogenic maxillary sinusitis. Materials and methods: In this study, we analyzed the etiology, clinical characteristics of the disease, x-ray findings, clinical course and treatment of 188 cases, which were diagnosed and treated as odontogenic or rhinogenic maxillary sinusitis in the Departments of Maxillofacial surgery and Otorhinolaringology – “St. Anna” Hospital, Sofia from 2005 to 2010. Patients were divided according to age and sex. Data was systematized and analyzed. Results: This study clearly showed that rhinogenic diseases of maxillary sinus are three times more frequent than odontogenic diseases. Also the etiology of odontogenic sinusitis most often is due to mistakes in the treatment of the upper teeth (alien corpuses, perforation after extraction, which is completely different from rhinogenic sinusitis. In the surgical treatment of rhinogenic maxillary sinusitis usually endonasal polypectomy was followed by operation according to Caldwell-Luc or functional sinus endoscopy. During the surgical treatment of odontogenic sinusitis the most frequent intervention was surgical plastic of oral-antral communication with mucogingival vestibular flap followed by operation according to Caldwell-Luck what is different from the treatment of rhinogenic sinusitis.Conclusion: Maxillary sinus often suffers from inflammatory diseases and should always be examined carefully by means of anamnesis, clinic exam and x-rays to identify its origin. Upper teeth should be treated carefully in everyday’s dental practice to avoid being cause of sinusitis.

  9. Bacterial communities vary between sinuses in chronic rhinosinusitis patients

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    Tom V Joss

    2016-01-01

    Full Text Available Chronic rhinosinusitis (CRS is a common and potentially debilitating disease characterized by inflammation of the sinus mucosa for longer than 12 weeks. Bacterial colonization of the sinuses and its role in the pathogenesis of this disease is an ongoing area of research. Recent advances in culture-independent molecular techniques for bacterial identification have the potential to provide a more accurate and complete assessment of the sinus microbiome, however there is little concordance in results between studies, possibly due to differences in the sampling location and techniques. This study aimed to determine whether the microbial communities from one sinus could be considered representative of all sinuses, and examine differences between two commonly used methods for sample collection, swabs and tissue biopsies. High-throughput DNA sequencing of the bacterial 16S rRNA gene was applied to both swab and tissue samples from multiple sinuses of 19 patients undergoing surgery for treatment of CRS. Results from swabs and tissue biopsies showed a high degree of similarity, indicating that swabbing is sufficient to recover the microbial community from the sinuses. Microbial communities from different sinuses within individual patients differed to varying degrees, demonstrating that it is possible for distinct microbiomes to exist simultaneously in different sinuses of the same patient. The sequencing results correlated well with culture-based pathogen identification conducted in parallel, although the culturing missed many species detected by sequencing. This finding has implications for future research into the sinus microbiome, which should take this heterogeneity into account by sampling patients from more than one sinus. It may also be of clinical importance, as determination of antibiotic sensitivities using culture of a swab from a single sinus could miss relevant pathogens that are localized to another sinus.

  10. 噪声作业工人听力损伤及心率异常与高血压的相关性研究%Relationship among hearing loss, arrhythmia and hypertension in industrial noise exposure workers

    Institute of Scientific and Technical Information of China (English)

    张维森; 肖吕武; 周浩; 吴琳; 何国权; 罗晓丽; 江朝强

    2012-01-01

    Objective To study the correlation of hearing loss, sinus arrhythmia and hypertension in noise exposured workers, Methods Combining with occupational health surveillance, 14 396 workers from 157 factories were investigated including interview, hearing test and other laboratory examination such as pure tone audiometry, electrocardiography and blood pressure measurement ect Hearing loss and sinus arrhythmia were used as reflect indexes of noise exposure level and autonomic nervous function respectively. The age-adjusted correlations of hearing loss and sinus arrhythmia with hypertension were analyzed respectively after gender and noise exposure duration stratification. Results The results showed that (1) most of the objects were males, age 35 years old and noise exposure duration less than 4 years. (2) The prevalence of hearing loss was significantly higher in males, that was increased with age and exposure duration, while the prevalence of sinus arrhythmia was higher in young, shorter exposured workers, (3) Those male workers suffered from sensorineural hearing loss or sinus tachycardia had higher risk of hypertension. The relative risk value odds ratio (OR) of hypertension were 4. 18 ( L56-11. 23 , 95% GI) and 5, 64 (3. 22-9. 88, 95% CI) for those with sensorineural hearing loss in 2. 1 to 4 years noise exposure group and those with sinus tachycardia in ≤2 years noise exposure group. Conclusion The results suggested that severe hearing damage and sinus tachycardia are well correlated with increased hypertension risk, and it should be necessary to pay attention to the higher risk of hypertension, especially in those workers who have lower autonomic nervous stability.%目的 探讨噪声作业工人听力损伤、心率改变与高血压的相关性.方法 结合职业健康检查对157家工厂14 396名噪声作业工人纯音听力、心电图和血压进行检测,以听力损伤和心率改变分别作为累计噪声暴露量和自主神经功能的反映指标

  11. Acute electrophysiological effects of dipyridamole on sinus node function in patients with sick sinus syndrome.

    Science.gov (United States)

    Yeşil, M; Bayata, S; Postaci, N; Aydin, C

    1997-12-01

    One of the most widely used tests for evaluation of sinus node function is sinus node recovery time (SNRT), which requires right heart catheterization. On the other hand SNRT has high specificity but only moderate sensitivity in the diagnosis of sick sinus syndrome (SSS). The authors studied acute electrophysiologic effects of dipyridamole (0.40 mg/kg IV) in 16 patients with clinical SSS. All of them had normal SNRT and had undergone permanent DDD pacemaker implantation. By the aid of temporary pacing inhibition, the authors noninvasively measured the corrected sinus node recovery time (SNRTc) and sinus cycle length (SCL) before and after dipyridamole administration. SCL was slightly decreased from a mean basal value of 1025 +/-323 to 913+/-213 msec after dipyridamole administration (mean -10%), but this was not statistically significant. SNRTc was increased from a mean basal value of 344+/-91 to 606+/-156 msec after dipyridamole administration (+76% Pnode function. SNRT measurement after intravenous dipyridamole may increase sensitivity of this test in patients with suspected SSS and normal SNRT.

  12. Recovery of opthalmoplegia associated with cavernous sinus dural arteriovenous fistulas after transvenous cavernous sinus packing

    Energy Technology Data Exchange (ETDEWEB)

    Lv Xianli; Jiang Chuhan; Li Youxiang; Yang Xinjian [Beijing Neurosurgical institute, Beijing Tiantan Hospital, Capital Medical University, 6, Tiantan Xili, Chongwen, Beijing (China); Wu Zhongxue, E-mail: ttyyzjb@sina.co [Beijing Neurosurgical institute, Beijing Tiantan Hospital, Capital Medical University, 6, Tiantan Xili, Chongwen, Beijing (China)

    2010-08-15

    Background: We report the recovery of ophthalmoplegia in 11 patients with cavernous sinus dural arteriovenous fistula (CSDAVF) after sinus packing at follow-up. Methods: Of 18 patients with CSDAVF treated with transvenous cavernous sinus packing between August 2002 and December 2007 at Beijing Tiantan Hospital, there were 9 patients with initial CNIII or CNVI dysfunction and 2 patients with CNVI dysfunction immediately after cavernous sinus packing selected and reevaluated. Results: Of 11 patients with CNIII or CNVI palsy, recovery was complete in 10. In 1 patient, complete CNVI palsy was unchanged because the CSDAVF was not cured. There were 6 men and 5 women with a mean age of 52.9 years. In 5 patients, CNVI palsy was associated with chemosis, proptosis and pulsatile tinnitus. Timing of treatment after onset of symptoms was from 4 to 35 days in 9 patients. All CSDAVFs were Barrow type D. Mean follow-up after treatment was 17.7 months (range, 2-54 months). Conclusion: CSDAVF-induced CNIII or CNVI palsies can be cured after cavernous sinus packing transvenously in most patients.

  13. Pilonidal sinus carcinoma (review of the literature

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    Ye. V. Tsema

    2012-01-01

    Full Text Available The analytic review of the national and foreign literature about problem of malignant transformation of sacrococcygeal pilonidal cysts is presented in the article. Here we expound the subject matters of prevalence of disease, clinical presentation, diagnostics, therapeutic approach and results of treatment these patients. The main problems of diagnostics and treatment of arcinoma arising in sacrococcygeal pilonidal sinus are singled out. The basic risk factors and redisposing factors of malignant transformation of sacrococcygeal pilonidal cysts are marked. It is showed, that principle direction for improvement of results of treatment patients with arcinoma arising in pilonidal sinus is early it diagnostics by means observation of the patients which have high risk of beginning its complication.

  14. Prenatal Diagnosis of Congenital Dermal Sinus

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    Sharif Sakr

    2015-04-01

    Full Text Available Background - Congenital dermal sinus (CDS is an uncommon form of spinal dysraphism. Although postdelivery identification in the neonate is aided by several associated physical examination findings, establishing this diagnosis prenatally has proven to be elusive. Case Report - We present a case of CDS where the prenatal findings at 20 weeks gestation led to the diagnosis, which was confirmed postnatally. The associated protrusion of fibrotic membranes through the sinus tract helped in the identification of this lesion prenatally, but created confusion with a more common type of lesion, an open neural tube defect. This is the first case report in the literature describing prenatal diagnosis of fetal CDS. Conclusion - Prenatal diagnosis with postnatal confirmation of CDS leads to early intervention, better long-term outcomes, and lesser complications.

  15. An autopsy case of traumatic sinus thrombosis.

    Science.gov (United States)

    Seto, Y; Takeichi, S

    1996-02-01

    A 38-year-old male slipped accidentally and fell from a height of 4.6 m, and was admitted to a hospital. A radiograph indicated a linear fracture of the parietal bone across the sagittal sutura, and a computed tomography scan of the head showed severe subdural hematoma on both parietal sides, so an operation was performed to remove the hematoma. Five hours after the operation, brain death due to a cerebral herniation occurred, and he died six days later. Autopsy revealed a linear fracture of the parietal bones, which crossed obliquely the sagittal sutura. A slightly lacerated wound of the dura mater was seen on the sagittal sutura, from where the latter half of that point to the left and right transverse sinuses were occluded completely with thrombosis. The brain was markedly swollen. From these findings, the victim was considered to have died from acute cerebral swelling due to traumatic thrombosis of the superior sagittal sinus.

  16. Maxillary sinusitis caused by Lasiodiplodia theobromae

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    Kindo A

    2010-01-01

    Full Text Available Lasiodiplodia (monotypic comprises a very small proportion of the fungal biota. It is a common plant pathogen in tropical and subtropical regions. Clinical reports on its association with onychomycosis, corneal ulcer and phaeohyphomycosis are available. However, Lasiodiplodia theobromae causing fungal sinusitis has not been reported. We present here a case of fungal sinusitis in a 30-year-old woman, who came to the ENT OPD (out patient department with complaints of intermittent bleeding and nasal discharge from the left side for a week. The patient complained of headache, predominantly on the left side and heaviness on and off since two months. Diagnosis was based on radiological and mycological evidence; the patient underwent endoscopic surgery and was started on antifungal treatment.

  17. Nasopharyngeal carcinoma presented as cavernous sinus tumour.

    Science.gov (United States)

    Moona, Mohammad Shafi; Mehdi, Itrat

    2011-12-01

    A 32 year Libyan male presented with the complaints of headache and diplopia. He was diagnosed with a cavernous sinus meningioma on the basis of MRI findings but no initial biopsy was taken. Depending on the radiologic diagnosis the patient was treated with gamma knife surgery twice, abroad. During follow up he developed left ear deafness and left cervical lymph adenopathy. An ENT evaluation with biopsy from the nasopharynx and cervical lymph node was taken. The histopathologic diagnosis of the resected tumour showed a nasopharyngeal carcinoma with cervical lymph node metastasis (poorly differentiated lympho-epithelial carcinoma). The cavernous sinus tumour which was initially treated as a meningioma was in fact metastasis from the nasopharyngeal carcinoma, making this an interesting and rare occurrence.

  18. LATERAL SINUS THROMBOSIS IN OTOLOGY: A REVIEW

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    B Visavanatha

    2010-09-01

    Full Text Available Lateral sinus thrombosis (LST is usually occurs as a complication of middle ear infection .The involvement of lateral sinus during the course of ear infection was a well known complication in preantibiotic days .The decrease in the incidence of LST is due to the introduction of broad-spectrum antibiotics, early diagnosis and surgical treatment. Now, it is a rare complication of otitis media and poses a serious threat that warrants immediate medical and surgical treatment. The classical clinical picture is often changed by previous antibiotic therapy. An awareness of this rare potentially devastating condition and its varied presentations is necessary for early diagnosis and treatment. LST can also occur after head injury.

  19. [Invasive maxilar sinusitis by Rhizopus oryzae].

    Science.gov (United States)

    Perea, S; del Palacio, A; Gil, R; de la Serna, J; Mata, R; Arribi, A

    1997-12-01

    We herein present a diabetic with non Hodgkin lymphoma patient that had been treated with steroids and developed fungal invasive sinusitis. The patient had intensive facial pain that did not respond to antibiotics and on clinical inspection had a necrotic lesion on right nasal area. A smear and biopsy tissue showed broad non septate hyphae and on cultures Rhizopus oryzae was isolated. There was an unfavorable outcome, and the patient died even though liposomal Amphotericin B was administered and surgical treatment was performed.

  20. [Genetic predictors of sick sinus node syndrome].

    Science.gov (United States)

    Chernova, A A; Nikulina, S Iu; Tret'iakova, S S

    2013-01-01

    The article is devoted to the role of heredity in development of the sick sinus node syndrome (SSNS). We have examined 14 probands and 110 their relatives from families with idiopathic SSNS and established the role in development of hereditary SSNS of polymorphisms of the following genes: -2-adrenoreceptor, enzyme endothelial NO synthase, protein connexin 40, voltage dependent cardiac sodium channels, cardiac myosin heavy chains. We also revealed associations of clinical variants of idiopathic SSNS with genotypes of the studied genes.

  1. Cunninghamella echinulata causing fatally invasive fungal sinusitis.

    Science.gov (United States)

    LeBlanc, Robert E; Meriden, Zina; Sutton, Deanna A; Thompson, Elizabeth H; Neofytos, Dionissios; Zhang, Sean X

    2013-08-01

    We report a fatal case of invasive fungal sinusitis caused by Cunninghamella echinulata in a febrile, neutropenic 15-year-old male with relapsing acute leukemia. The isolate was recovered from a nasal biopsy from the right middle meatus, and microscopic examination of the tissue revealed angioinvasion and necrosis. Human infection caused by this organism has not been well documented; however, this report alerts us to its life-threatening potential.

  2. NEW APPROACH TO ANORECTAL SINUS DISEASE

    OpenAIRE

    2014-01-01

    AIM: Retrospective analysis of 23 cases of persistent ano-rectal abscesses and fistulas with an unusual clinical presentation (absent external opening in all cases) resulting in modification of treatment modalities to prevent the dreaded complications of recurrence and incontinence. METHODS: 23 patients presenting with ano-rectal sinus disease from January 2012 to June 2013 were retrospectively reviewed. Patients were collected from two different institutions of Kanpur. In...

  3. Successful sinus restoration for transverse-sigmoid sinus dural arteriovenous fistula complicated by multiple venous sinus occlusions: The usefulness of preoperative computed tomography venography

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    Koichiro Takemoto

    2015-01-01

    Conclusion: Sinus restoration is preferable in patients with severe cerebral venous congestion due to multiple sinus occlusions and/or a restricted collateral venous outlet. CT venography is useful for precise evaluation of the length and configuration of the occluded segment, which thus make it possible to evaluate the feasibility of stenting.

  4. Amalgam tattoo: a cause of sinusitis?

    Science.gov (United States)

    Parizi, José Luiz Santos; Nai, Gisele Alborghetti

    2010-01-01

    Little attention has been paid to the toxicity of silver amalgam fillings, which have been used over the centuries in Dentistry. Amalgam particles may accidentally and/or traumatically be embedded into the submucosal tissue during placement of a restoration and perpetuate in such area. This article presents a case of amalgam tattoo and investigates whether it is related to the patient's repeated episodes of sinusitis. The patient was a 46-year-old woman with a 2 mm diameter radiopaque lesion in the right oral mucosa detected on a panoramic radiograph and presented as a black macula clinically. A complete surgical resection was carried out. The histopathological examination revealed deposits of dark-brownish pigments lining the submucosal tissue with adjacent lymphocytic inflammatory infiltrate and multinucleated giant cells phagocyting pigments. There was a negative staining for both iron and melanin. One year after lesion removal, the patient reported that the sinusitis crises had ceased after repeated episodes for years. It may be speculated that the inflammatory process related to amalgam tattoo seems to lead to a local immune response that causes sinusitis because it enhances the human leukocyte antigen DR (HLA-DR) tissue expression.

  5. Amalgam tattoo: a cause of sinusitis?

    Directory of Open Access Journals (Sweden)

    José Luiz Santos Parizi

    2010-02-01

    Full Text Available Little attention has been paid to the toxicity of silver amalgam fillings, which have been used over the centuries in Dentistry. Amalgam particles may accidentally and/or traumatically be embedded into the submucosal tissue during placement of a restoration and perpetuate in such area. This article presents a case of amalgam tattoo and investigates whether it is related to the patient's repeated episodes of sinusitis. The patient was a 46-year-old woman with a 2 mm diameter radiopaque lesion in the right oral mucosa detected on a panoramic radiograph and presented as a black macula clinically. A complete surgical resection was carried out. The histopathological examination revealed deposits of dark-brownish pigments lining the submucosal tissue with adjacent lymphocytic inflammatory infiltrate and multinucleated giant cells phagocyting pigments. There was a negative staining for both iron and melanin. One year after lesion removal, the patient reported that the sinusitis crises had ceased after repeated episodes for years. It may be speculated that the inflammatory process related to amalgam tattoo seems to lead to a local immune response that causes sinusitis because it enhances the human leukocyte antigen DR (HLA-DR tissue expression.

  6. Ethmoid sinus osteoma associated with blow-out fracture.

    Science.gov (United States)

    Kim, Young-Jin; Kim, Dong-Yeon; Jun, Young-Joon; Seo, Byung-Chul

    2012-03-01

    Osteoma is a benign tumor that is composed of compact or cancellous bone. It is the most common benign neoplasm of the paranasal sinus, and ethmoid sinuses are the second most common sites of paranasal sinus osteoma. The symptoms of ethmoid sinus osteoma can give rise to various kinds and extent of symptoms. In symptomatic cases, surgical management is necessary, but appropriate surgical approach to the ethmoid sinus is not clearly established. We describe 2 male patients with a diagnosis of blow-out fractures after trauma; ethmoid sinus osteoma on preoperative computed tomography scans was coincidentally found, and the surgical correction was done simultaneously. The purpose of this article was to present the successful surgical removal of ethmoid osteoma through lamina papyracea and transcaruncular approach, resulting in both successful surgical correction and good cosmetic outcome.

  7. Acute fungal sinusitis in neutropenic patients of Namazi hospital/ Shiraz

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    Parisa Badiee

    2008-09-01

    Full Text Available Introduction: Fungal sinusitis is a well known disease in immunocompromised patients, but recently many reports have indicated an increased prevalence of fungal sinusitis in otherwise healthy individuals. The aim of this study was to assess the frequency of invasive fungal sinusitis (IFS in neutropenic patients and to determine outcome factors that may affect their survival. Methods: A total of 142 patients who were undergoing chemotherapy were followed by clinical and radiological features suggestive of fungal sinusitis. Patients with fever, headache, facial swelling and radiological finding underwent endoscopic sinus surgery. The biopsy materials were studied by mycological and histopathological methods. Results: Eleven from 142 patients were identified to have IFS. The ethiologic agents were Aspergillus flavus (5 cases, Alternaria sp. (3 cases, Aspergillus fumigatus (2 cases and mucor (1 case. Eight of 11 cases died. Conclusions: Invasive fungal sinusitis causes a high rate of mortality among immunocompromised patients. Therefore, early diagnosis with aggressive medical and surgical intervention is critical for survival.

  8. MULTIDETECTOR CT STUDY OF ANATOMICAL VARIANTS OF ETHMOID SINUS

    Institute of Scientific and Technical Information of China (English)

    李玉华; 薛建平; 朱铭

    2004-01-01

    Objective To evaluate the significance of multidetector CT 3D reconstruction technique in showing anatomy of ethmoid sinus, at the same time, anatomic variations of ethmoid sinus and its clinical significance were also discussed. Methods 250 cases of ethmoid sinuses were scanned transversally by multidetector scaner, coronal and sagittal views were reconstructed. Results Coronal and sagittal views were good enough to make diagnosis. 5 kinds of common ethmoid sinus variations were seen, including pneumatization of ethmoid bulla (56. 5% ) , Onodi air cell(26% ) , Hailer cell(6. 5% ) ,low ethmoid foveolas( 4. 3% )and over intromigratiny lamella papyracea (6. 5% ). Conclusion The coronal and other special views of ethmoid sinus are showed clearly by 3 D reconstruction which can provide detailed image informations for functional endoscopic sinus surgery.

  9. Pacemaker implantation in a patient with brugada and sick sinus syndrome.

    Science.gov (United States)

    Risgaard, Bjarke; Bundgaard, Henning; Jabbari, Reza; Haunsø, Stig; Winkel, Bo Gregers; Tfelt-Hansen, Jacob

    2013-03-26

    Brugada syndrome (BrS) is a rare and inherited primary arrhythmic syndrome characterized by ST-segment elevations in the right precordial leads (V1-V3) with an increased risk of sudden cardiac death (SCD). Arrhythmias in BrS are often nocturne, and brady-arrhythmias are often seen in patients with loss-of-function mutations in SCN5A. In this case-report we present a 75-year old woman referred to our outpatient clinic for inherited cardiac diseases for a familial clinical work-up. Since childhood she had suffered from dizziness, absence seizures, and countless Syncope's. In 2004 sick sinus syndrome was suspected and she was treated with implantation of a pacemaker (PM) at another institution. An inherited cardiac disease was one day suddenly suspected, as the patient had a 61-year old brother who was diagnosed with symptomatic BrS, and treated with an implantable cardioverter defibrillator (ICD) after aborted SCD. A mutation screening revealed a SCN5A [S231CfsX251 (c.692-693delCA)] loss-of-function mutation not previously reported, and as a part of the cascade screening in relatives she was therefore referred to our clinic. In the 7 year period after PM implantation she had experienced no cardiac symptoms, although her electrocardiogram changes now were consistent with a BrS type 1 pattern. A genetic test confirmed that she had the same mutation in SCN5A as her brother. In this case-report we present a loss-of function mutation in SCN5A not previously associated with BrS nor presented in healthy controls. Sinus node dysfunction has previously been documented in patients with symptomatic BrS, which suggests it is not a rare concomitant. The only accepted treatment of BrS is today implantation of an ICD. In the future studies should evaluate if PM in some cases of symptomatic BrS can be used instead of ICDs in patients with a loss-of-function SCN5A mutations.

  10. Managment of orbital complications of sinusitis

    Directory of Open Access Journals (Sweden)

    Fazil Emre Ozkurt

    2014-10-01

    Full Text Available Purpose: We reported on the clinical approaches of ophthalmology and otorhinolaryngology departments in the treatment of the orbital complications of sinusitis. We also included an in-depth literature review. Methods: We retrospectively reviewed the medical files of 51 patients from January 2008 to January 2014. The records were evaluated for age, gender, type of orbital complications, symptoms, predisposing factors, imaging studies, medical and surgical management, culture results, and follow-up information. SPSS version 15.0 software (Statistical Analysis, The Statistical Package for Social Sciences Inc, Chicago, IL was used for the statistical analysis. Results: Fifty-one patients met the criteria, with available medical records, for the study (29 male, 22 female. Thirty-two (62.7% were diagnosed with preseptal cellulitis and 19 (37.3% with postseptal cellulitis. After a detailed evaluation, 15 were diagnosed with a subperiosteal abscess (SPA, and 4 were diagnosed with orbital cellulitis. The age and gender was similar for the two groups. Five patients with medial SPA were treated with endoscopic sinus surgery, one patient with inferior SPA was treated with external surgery, and six patients with other localizations were treated with a combination of endoscopic sinus surgery and external surgery. All patients presented with periorbital erythema and edema. The length of hospitalization and duration of symptoms were similar in both groups. Visual acuity was between 1/10 to 10/10 (mean 7/10 and statistically significant for preseptal and postseptal cellulitis groups (p<0.001. All patients received intravenous antibiotics upon the first day of admission. Conclusion: Orbital complications of acute sinusitis required intensive follow-up and a multidisciplinary approach. A contrast-enhanced paranasal sinus computerized tomography (CT scan can detect the extent of the infection. An initial trial of intravenosus (IV antibiotics may be appropriate when

  11. First Case Report of Sinusitis with Lophomonas blattarum from Iran

    OpenAIRE

    2016-01-01

    Introduction. Lophomonas blattarum is a rare cause of bronchopulmonary and sinus infection. This paper presents a rare case of Lophomonas sinusitis. Case Presentation. The patient was a 31-year-old woman who was admitted because of a history of upper respiratory infection and sinusitis. Direct microscopic examination of the sputum and nasal discharge showed large numbers of living Lophomonas blattarum with irregular movement of flagella. The patient was successfully treated by Metronidazole 7...

  12. Oral surgery as risk factor of odontogenic maxillary sinusitis

    OpenAIRE

    Račić Alek; Dotlić Jelena; Janošević Ljiljana

    2006-01-01

    In order to determine the risk factors of odontogenic maxillary sinusitis, a total number of 40 patients with this pathological condition was examined in three-year period. Oroantral communication was detected in 40% of patients, oroantral fistula in 25%, sinus foreign bodies in 15% and other pathological conditions in 10% of cases. The extraction of the upper lateral teeth was the cause of odontogenic sinusitis in 65% patients. Given the specific tooth, the first upper molar was the most com...

  13. Pott's Puffy Tumor Arising from Frontal Sinusitis

    Energy Technology Data Exchange (ETDEWEB)

    Lim, Ji Yeon; Kang, Hyun Koo [Seoul Veterans Hospital, Seoul (Korea, Republic of)

    2010-02-15

    Pott's puffy tumor is an extremely rare and potentially life-threatening complication of frontal sinusitis. We report a case of a 64-year-old man who presented at our emergency department with mild tenderness on the glabellar area and diplopia. Computed Tomography (CT) revealed frontal sinusitis and osteomyelitis of the frontal bone. Following sinus trephination and long-term antibiotic therapy, the patient achieved a complete recovery.

  14. Abnormal Ca2+ homeostasis, atrial arrhythmogenesis and sinus node dysfunction in murine hearts modelling RyR2 modification

    Directory of Open Access Journals (Sweden)

    Yanmin eZhang

    2013-06-01

    Full Text Available RyR2 mutations are implicated in catecholaminergic polymorphic ventricular tachycardia thought to result from altered myocyte Ca2+ homeostasis reflecting inappropriate ‘leakiness’ of RyR2-Ca2+ release channels arising from increases in their basal activity, alterations in their phosphorylation, or defective interactions with other molecules or ions. The latter include calstabin, calsequestrin-2, Mg2+, and extraluminal or intraluminal Ca2+. Recent clinical studies additionally associate RyR2 abnormalities with atrial arrhythmias including atrial tachycardia, fibrillation and standstill, and sinus node dysfunction. Some RyR2 mutations associated with CPVT in mouse models also show such arrhythmias that similarly correlate with altered Ca2+ homeostasis. Some examples show evidence for increased Ca2+/calmodulin-dependent protein kinase II phosphorylation of RyR2. A homozygotic RyR2-P2328S variant demonstrates potential arrhythmic substrate resulting from reduced conduction velocity in addition to delayed afterdepolarizations and ectopic action potential firing. Finally, one model with an increased RyR2 activity in the sino-atrial node shows decreased automaticity in the presence of Ca2+-dependent decreases in ICa,L and diastolic sarcoplasmic reticular Ca2+ depletion.

  15. Influence of racemic higenamine on the sinus node

    OpenAIRE

    Yu, Fengxia; KONG, LINGTING; Wang, Shujuan

    2012-01-01

    The aim of this study was to explore the mechanism of racemic higenamine in the treatment of sick sinus syndrome (SSS). A total of 40 New Zealand rabbits were randomly divided into normal sinus node and damaged sinus node (SND) groups, and each group was randomly divided into treatment and control groups (n=10). The SND model was established by formaldehyde wet dressing of the sinus node area. The treatment groups were administered an intravenous infusion of 0.04 mg/kg racemic higenamine via ...

  16. The most often causes of odontogenic maxillary sinusitis

    Directory of Open Access Journals (Sweden)

    Račić Alek

    2004-01-01

    Full Text Available In the period 2000-2002, 40 patients with odontogenic sinusitis were examined at the Institute for ENT and Maxillofacial Surgery, Clinical Centre of Serbia. Oroantral communication was detected in 40% of the patients, oroantral fistula in 35%, sinus foreign bodies in 15% and other conditions in 10% of the cases. The extraction of the upper lateral teeth was the cause of odontogenic sinusitis in 65% of the cases. Given the specific tooth, the first upper molar was the most often cause of the condition, i.e., in 40% of cases. Odontogenic sinusitis as the complication of the oral cavity surgery was found in 85% of the patients.

  17. Endoscopic removal of an ectopic tooth in maxillary sinus.

    Science.gov (United States)

    Viterbo, Stefano; Griffa, Alessandro; Boffano, Paolo

    2013-01-01

    Ectopic teeth erupted in the maxillary sinus are rarely reported. Although the causes of eruption of a tooth into the maxillary sinus are unclear, some clinical conditions are suspected to be responsible, such as developmental disturbances (cleft palate), displacement of teeth by trauma, interventions or cyst, infection, genetic factors, crowding, and dense bone. Most cases of ectopic teeth in the maxillary sinus are asymptomatic and are occasionally diagnosed thanks to routine radiographic investigations.The aim of this article is to present and discuss the surgical management of an ectopic third molar in the roof of the maxillary sinus.

  18. Optical mapping system for visualizing arrhythmias in isolated mouse atria.

    Science.gov (United States)

    Schmidt, Robyn; Nygren, Anders

    2006-01-01

    Optical mapping has become an important technique in the study of cardiac electrophysiology, especially in terms of investigating the mechanisms of cardiac arrhythmias. The increasing availability of transgenic mice as models for cardiovascular disease is driving the need for instrumentation suitable for the study of electrical activity in the mouse heart. In this paper we evaluate our optical mapping system's ability to clearly record induced arrhythmic activity in an isolated mouse atrial preparation. Preliminary results indicate that the signal quality is high enough that individual optically recorded action potentials can be discerned in many pixels, even without post-processing for noise removal. The optical mapping video is clear enough for general observations regarding the patterns of electrical propagation during arrhythmic behaviour. The induced arrhythmias appear to have a regular pattern of activity, and are likely best classified as atrial tachycardias.

  19. ECG Signal Analysis and Arrhythmia Detection using Wavelet Transform

    Science.gov (United States)

    Kaur, Inderbir; Rajni, Rajni; Marwaha, Anupma

    2016-12-01

    Electrocardiogram (ECG) is used to record the electrical activity of the heart. The ECG signal being non-stationary in nature, makes the analysis and interpretation of the signal very difficult. Hence accurate analysis of ECG signal with a powerful tool like discrete wavelet transform (DWT) becomes imperative. In this paper, ECG signal is denoised to remove the artifacts and analyzed using Wavelet Transform to detect the QRS complex and arrhythmia. This work is implemented in MATLAB software for MIT/BIH Arrhythmia database and yields the sensitivity of 99.85 %, positive predictivity of 99.92 % and detection error rate of 0.221 % with wavelet transform. It is also inferred that DWT outperforms principle component analysis technique in detection of ECG signal.

  20. Effect of Encoding Method on the Distribution of Cardiac Arrhythmias

    CERN Document Server

    Mora, Luis A

    2011-01-01

    This paper presents the evaluation of the effect of the method of ECG signal encoding, based on nonlinear characteristics such as information entropy and Lempel-Ziv complexity, on the distribution of cardiac arrhythmias. Initially proposed a procedure electrocardiographic gating to compensate for errors inherent in the process of filtering segments. For the evaluation of distributions and determine which of the different encoding methods produces greater separation between different kinds of arrhythmias studied (AFIB, AFL, SVTA, VT, Normal's), use a function based on the dispersion of the elements on the centroid of its class, the result being that the best encoding for the entire system is through the method of threshold value for a ternary code with E = 1 / 12.

  1. Arrhythmia as a cardiac manifestation in MELAS syndrome.

    Science.gov (United States)

    Thomas, Tamara; Craigen, William J; Moore, Ryan; Czosek, Richard; Jefferies, John L

    2015-09-01

    A 44-year-old female with a diagnosis of mitochondrial myopathy, encephalopathy and stroke-like episodes (MELAS) syndrome had progressive left ventricular hypertrophy (LVH) on echocardiogram. A Holter monitor demonstrated episodes of non-sustained atrial tachycardia, a finding not been previously described in this population. This unique case of MELAS syndrome demonstrates the known associated cardiac manifestation of LVH and the new finding of atrial tachycardia which may represent the potential for subclinical arrhythmia in this population.

  2. Cardiac arrhythmia and heart failure: From bench to bedside

    Institute of Scientific and Technical Information of China (English)

    Yong-Fu Xiao

    2011-01-01

    @@ Cardiac arrhythmia is an abnormal rate and/or rhythm of a heart due to its abnormal electrical impulse origination and/or propagation.Various etiologies can cause arrhythnuas.Heart failure(HF)is a clinical syndrome due to an impaired heart that can not pump sufficient blood to meet the systemic metabolic needs.The common causes of HF include myocardial infarction,hypertension,valvular heart disease,and cardiomyopathy.

  3. Effect of fish oil on arrhythmias and mortality: systematic review

    OpenAIRE

    León, Hernando; Shibata, Marcelo C; Sivakumaran, Soori; Dorgan, Marlene; Chatterley, Trish; Ross T Tsuyuki

    2008-01-01

    Objective To synthesise the literature on the effects of fish oil—docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA)—on mortality and arrhythmias and to explore dose response and formulation effects. Design Systematic review and meta-analysis. Data sources Medline, Embase, the Cochrane Library, PubMed, CINAHL, IPA, Web of Science, Scopus, Pascal, Allied and Complementary Medicine, Academic OneFile, ProQuest Dissertations and Theses, Evidence-Based Complementary Medicine, and LILACS. S...

  4. Arrhythmia as a cardiac manifestation in MELAS syndrome

    Directory of Open Access Journals (Sweden)

    Tamara Thomas

    2015-09-01

    Full Text Available A 44-year-old female with a diagnosis of mitochondrial myopathy, encephalopathy and stroke-like episodes (MELAS syndrome had progressive left ventricular hypertrophy (LVH on echocardiogram. A Holter monitor demonstrated episodes of non-sustained atrial tachycardia, a finding not been previously described in this population. This unique case of MELAS syndrome demonstrates the known associated cardiac manifestation of LVH and the new finding of atrial tachycardia which may represent the potential for subclinical arrhythmia in this population.

  5. Pseudohypoaldosteronism in a neonate presenting as life-threatening arrhythmia

    OpenAIRE

    Rajpoot, Sudeep K.; Maggi, Carlos; Bhangoo, Amrit

    2014-01-01

    Summary Neonatal hyperkalemia and hyponatremia are medical conditions that require an emergent diagnosis and treatment to avoid morbidity and mortality. Here, we describe the case of a 10-day-old female baby presenting with life-threatening hyperkalemia, hyponatremia, and metabolic acidosis diagnosed as autosomal dominant pseudohypoaldosteronism type 1 (PHA1). This report aims to recognize that PHA1 may present with a life-threatening arrhythmia due to severe hyperkalemia and describes the ma...

  6. Effect of Electroacupuncture on Reperfusion Ventricular Arrhythmia in Rat

    Institute of Scientific and Technical Information of China (English)

    ZENG Qing; LI Man; OUYANG Xingbiao; NONG Yi; LIU Xiaochun; SHI Jing; GUAN Xinmin

    2006-01-01

    Protective effect and mechanism of electroacupuncture (EA) on acute reperfusion ventricular arrhthmia was investigated. Ventricular arrhythmia was induced by occlusion of the proximal left anterior descend (LAD) branch of coronary artery for 5 min and followed with 15 min reperfusion . EA on acupoint "Neiguan", "Jianshi" was performed at 30 min before ligation and continued another 5 min during ischemia. Isoprenaline (20, 30 and 50 μg/kg) or atropine (1 mg/kg) was intravenously injected at 5min before ischemia. The results showed that EA significantly decreased the incidence of ischemia/reperfusion (I/R) induced ventricular tachycardia (VT), ventricular fibrillation (VF) and mortality as compared to I/R group. Atropine partially suppressed the EA's effect of antiarrhythmia; Isoprenaline increased the incidence and severity of reperfusion arrhythmia, which was inhibited by EA, but this inhibition of EA was blocked with increasing dose of isoprenaline. The results indicated that EA treatment could prevent the occurrence of reperfusion ventricular arrhythmia in rats with myocardial ischemia, and its mechanism might be related to the regulation of EA on the β-adrenoceptors and M-cholinergic receptor activation in myocardium.

  7. Intramyocardial activation in early ventricular arrhythmias following coronary artery ligation.

    Science.gov (United States)

    Kaplinsky, E; Ogawa, S; Kmetzo, J; Balke, C W; Dreifus, L S

    1980-01-01

    Subendocardial, subepicardial and intramyocardial activation in the ischemic zone was investigated in 20 anesthetized open chest dogs 0-30 minutes after the ligation of the left anterior descending coronary artery. Single and composite electrograms and lead 2 of the ECG were recorded. Coronary artery ligation produced marked delay, fragmentation, and reduction in amplitude in the electrical activity of the subepicardial and intramyocardial muscle layers. The activation remained synchronous in the subendocardial muscle layers. Extension of electrical activity in the ischemic subepicardium and intramyocardium beyond the T wave of the surface ECG preceded the onset of immediate ventricular arrhythmias (IVA) during the initial ten minute period after coronary artery ligation. However, a second surge of delayed ventricular arrhythmias (DVA), 10-30 minutes after ligation, was not associated with the appearance of diastolic electrical activity in any of the subepicardial or myocardial layers. It appears that subepicardial as well as intramyocardial reentry could play an important role in the genesis of the immediate ventricular arrhythmias (1-10 minutes after ligation). In contrast, no obvious reentrant activity as evidenced by delayed and fragmented electrical activity could be observed in the electrogram from any of the myocardial electrical activity could be observed in the electrogram from any of the myocardial layers with the appearance of delayed ventricular ectopic activity 10-30 minutes after ligation.

  8. Computational approaches to understand cardiac electrophysiology and arrhythmias

    Science.gov (United States)

    Roberts, Byron N.; Yang, Pei-Chi; Behrens, Steven B.; Moreno, Jonathan D.

    2012-01-01

    Cardiac rhythms arise from electrical activity generated by precisely timed opening and closing of ion channels in individual cardiac myocytes. These impulses spread throughout the cardiac muscle to manifest as electrical waves in the whole heart. Regularity of electrical waves is critically important since they signal the heart muscle to contract, driving the primary function of the heart to act as a pump and deliver blood to the brain and vital organs. When electrical activity goes awry during a cardiac arrhythmia, the pump does not function, the brain does not receive oxygenated blood, and death ensues. For more than 50 years, mathematically based models of cardiac electrical activity have been used to improve understanding of basic mechanisms of normal and abnormal cardiac electrical function. Computer-based modeling approaches to understand cardiac activity are uniquely helpful because they allow for distillation of complex emergent behaviors into the key contributing components underlying them. Here we review the latest advances and novel concepts in the field as they relate to understanding the complex interplay between electrical, mechanical, structural, and genetic mechanisms during arrhythmia development at the level of ion channels, cells, and tissues. We also discuss the latest computational approaches to guiding arrhythmia therapy. PMID:22886409

  9. Rescue of mutated cardiac ion channels in inherited arrhythmia syndromes.

    Science.gov (United States)

    Balijepalli, Sadguna Y; Anderson, Corey L; Lin, Eric C; January, Craig T

    2010-08-01

    Inherited arrhythmia syndromes comprise an increasingly complex group of diseases involving mutations in multiple genes encoding ion channels, ion channel accessory subunits and channel interacting proteins, and various regulatory elements. These mutations serve to disrupt normal electrophysiology in the heart, leading to increased arrhythmogenic risk and death. These diseases have added impact as they often affect young people, sometimes without warning. Although originally thought to alter ion channel function, it is now increasingly recognized that mutations may alter ion channel protein and messenger RNA processing, to reduce the number of channels reaching the surface membrane. For many of these mutations, it is also known that several interventions may restore protein processing of mutant channels to increase their surface membrane expression toward normal. In this article, we reviewed inherited arrhythmia syndromes, focusing on long QT syndrome type 2, and discuss the complex biology of ion channel trafficking and pharmacological rescue of disease-causing mutant channels. Pharmacological rescue of misprocessed mutant channel proteins, or their transcripts providing appropriate small molecule drugs can be developed, has the potential for novel clinical therapies in some patients with inherited arrhythmia syndromes.

  10. Cardiac arrhythmias and sudden unexpected death in epilepsy (SUDEP).

    Science.gov (United States)

    Velagapudi, Poonam; Turagam, Mohit; Laurence, Thomas; Kocheril, Abraham

    2012-03-01

    Sudden unexpected death in epilepsy (SUDEP) is a major clinical problem in epilepsy patients in the United States, especially those with chronic, uncontrolled epilepsy. Several pathophysiological events contributing to SUDEP include cardiac arrhythmias, respiratory dysfunction, and dysregulation of systemic or cerebral circulation. There is a significant body of literature suggesting the prominent role of cardiac arrhythmias in the pathogenesis of SUDEP. There is evidence to say that long-standing epilepsy can cause physiological and anatomical autonomic instability resulting in life-threatening arrhythmias. Tachyarrhythmias, bradyarrhythmias, and asystole are commonly seen during ictal, interictal, and postictal phase in epilepsy patients. It is unclear if these rhythm disturbances need attention as some of them may be just benign findings. Evidence regarding prolonged cardiovascular monitoring or the benefit of pacemaker/defibrillator implantation for primary or secondary prevention in epilepsy patients is limited. Awareness regarding pathophysiology, cardiac effects, and management options of SUDEP will become useful in guiding more individualized treatment in the near future. (PACE 2011; 1-8).

  11. The influence of type 2 diabetes mellitus on the frequency and complexity of ventricular arrhythmias and heart rate variability in patients after myocardial infarction

    Directory of Open Access Journals (Sweden)

    Stoičkov Viktor

    2016-01-01

    Full Text Available Background/Aim. After myocardial infarction arrhythmic cardiac deaths are significantly more frequent compared to non-arrhythmic ones. The aim of the study was to investigate the influence of type 2 diabetes mellitus (T2DM on the frequency and complexity of ventricular arrhythmias after myocardial infarction. Methods. The study included 293 patients, mean age 59.5 ± 9.21 years, who were at least six months after acute myocardial infarction with the sinus rhythm, without atrioventricular blocks and branch blocks. In the clinical group 95 (32.42% patients were with T2DM, while 198 (67.57% patients were without diabetes. All of the patients were subjected to the following procedures: standard ECG according to which the corrected QT dispersion (QTdc was calculated, exercise stress test, and 24-hour holter monitoring according to which, the four parameters of time domain of heart rate variability (HRV were analyzed: standard deviation of all normal RR intervals during 24 hours (SDNN, standard deviation of the averages of normal RR intervals in all five-minute segments during 24 hours (SDANN, the square root of the mean of the sum of the squares of differences between adjacent normal (RMS-SD, and percentage of consequtive RR intervals which differed for more than 50 ms during 24 hours (NN > 50 ms. Results. In patients after myocardial infarction, patients with T2DM had significantly higher percentage of frequent and complex ventricular arrhythmias compared to the patients without diabetes (p 50 ms (p < 0.001, and significantly higher values of QTdc (p < 0.001 compared to the patients without diabetes. Conclusion. The study showed that type 2 diabetes mellitus has significant influence on ventricular arrhythmias, HRV parameters and QT dispersion in patients after myocardial infarction.

  12. The role of the Arrhythmia Team, an integrated, multidisciplinary approach to treatment of patients with cardiac arrhythmias: results of the European Heart Rhythm Association survey.

    Science.gov (United States)

    Fumagalli, Stefano; Chen, Jian; Dobreanu, Dan; Madrid, Antonio Hernandez; Tilz, Roland; Dagres, Nikolaos

    2016-04-01

    Management of patients with cardiac arrhythmias is increasingly complex because of continuous technological advance and multifaceted clinical conditions associated with ageing of the population, the presence of co-morbidities and the need for polypharmacy. The aim of this European Heart Rhythm Association Scientific Initiatives Committee survey was to provide an insight into the role of the Arrhythmia Team, an integrated, multidisciplinary approach to management of patients with cardiac arrhythmias. Forty-eight centres from 18 European countries replied to the Web-based questionnaire. The presence of an Arrhythmia Team was reported by 44% of the respondents, whereas 17% were not familiar with this term. Apart from the electrophysiologist, health professionals who should belong to such teams, according to the majority of the respondents, include a clinical cardiologist, a nurse, a cardiac surgeon, a heart failure specialist, a geneticist, and a geriatrician. Its main activity should be dedicated to the management of patients with complex clinical conditions or refractory or inherited forms of arrhythmias. When present, the Arrhythmia Team was considered helpful by 95% of respondents; the majority of centres (79%) agreed that it should be implemented. The Arrhythmia Team seems to be connected to important expectations in the management of cardiac arrhythmias. The efficacy of such an integrated and multidisciplinary approach should be encouraged and tested in clinical practice.

  13. Incidental sinus abnormalities in 256 patients referred for brain MRI

    Directory of Open Access Journals (Sweden)

    Ghanaati H

    2007-06-01

    Full Text Available Background: Imaging abnormalities in the paranasal sinuses are regularly noted as incidental findings on MRI, however, little is known about their prevalence in the Iranian population. The purpose of this study was to classify these findings in the paranasal sinuses as seen on MRI and to investigate the prevalence, according to site and type of paranasal abnormality. Methods: In this cross-sectional study, the T2-weighted axial MRI of 256 patients with diseases unrelated to their paranasal sinuses were reviewed between May 2002 and June 2003. The findings were categorized according to the anatomic location and the imaging characteristics of the abnormality. The abnormalities recorded included total sinus opacification, mucoperiosteal thickening >5mm, air fluid levels and retention cysts or polyps. Unilateral or bilateral involvement and septal deviation were also noted. A sinus was considered normal if it was fully aerated and no soft-tissue density was apparent within the cavity. Results: Among our cases, 111 (43.5% were male and 145 (56.5% were female. Of these patients, abnormalities in one or more of the sinus groups were found in 110 subjects (42.9%, 55.5% of which were male and 44.5% were female (P=0.001. Maxillary sinus abnormalities were observed in 66.4% of the patients, while ethmoid sinus abnormalities were found in 63.6%. Of the ethmoid abnormalities, 21% were found in the anterior section, 9% in the middle ethmoid, and 8% in the posterior ethmoid. The most common abnormality found was mucosal thickening. Among our cases, 23.4% had septal deviation, which was significantly higher among those with sinusitis (29% versus 19.1%; P<0.01. Of those patients with sinus involvement, 16% were involved in the sphenoid sinus and 5% in the frontal sinus. The results obtained from the patients with sinus abnormality revealed that 85% suffered from cough, nasal obstruction, runny nose, facial pain and post nasal discharge and 24% had been diagnosed

  14. Treatment for an endosseous implant migrated into the maxillary sinus not causing maxillary sinusitis : Case report

    NARCIS (Netherlands)

    Raghoebar, GM; Vissink, A

    2003-01-01

    Placement of endosseous implants in the maxilla has been proven to be a reliable treatment modality. If there is lack of supporting bone, the placed implant may not have enough primary stability and may migrate into the maxillary sinus. Displaced implants must be removed. If there are no signs of ma

  15. Effects of antiarrhythmic peptide 10 on acute ventricular arrhythmia

    Institute of Scientific and Technical Information of China (English)

    Bing Sun; Jin-Fa Jiang; Cui-Mei Zhao; Chao-Hui Hu

    2015-01-01

    Objective:To observe the effects antiarrhythmic peptide 10 (AAP10) aon acute ventricular arrhythmia and the phosphorylation state of ischemic myocardium connexin.Methods:Acute total ischemia and partial ischemia models were established by ceasing perfusion and ligating the left anterior descending coronary artery in SD rats. The effects of AAP10 (1 mg/L) on the incidence rate of ischemia-induced ventricular arrhythmia were observed. The ischemic myocardium was sampled to detect total-Cx43 and NP-Cx43 by immunofluorescent staining and western blotting. the total-Cx43 expression was detected through image analysis system by semi-quantitative analysis.Results: AAP10 could significantly decrease the incidence of ischemia-induced ventricular tachycardia and ventricular fibrillation. During ischemic stage, total ischemia (TI) and AAP10 total ischemia (ATI) groups were compared with partial ischemia (PI) and AAP10 partial ischemia (API) groups. The rates of incidence for arrhythmia in the ATI and API groups (10% and 0%) were lower than those in the TI and PI groups (60% and 45%). The difference between the two groups was statistically significant (P=0.019, P=0.020). The semi-quantitative analysis results of the ischemic myocardium showed that the total-Cx43 protein expression distribution areas for TI, ATI, PI and API groups were significantly decreased compared with the control group. On the other hand, the NP-Cx43 distribution areas of TI, ATI, PI and API groups were significantly increased compared with the control group (P>0.05). AAP10 could increase the total-Cx43 expression in the ischemic area and decrease the NP-Cx43 expression. Western blot results were consistent with the results of immunofluorescence staining.Conclusions:AAP10 can significantly decrease the rate of incidence of acute ischemia-induced ventricular tachycardia and ventricular fibrillation. Acute ischemic ventricular arrhythmias may have a relationship with the decreased phosphorylation of Cx43

  16. Transforming Growth Factor-β1 T869C Gene Polymorphism Is Associated with Acquired Sick Sinus Syndrome via Linking a Higher Serum Protein Level.

    Directory of Open Access Journals (Sweden)

    Jan-Yow Chen

    Full Text Available Familial sick sinus syndrome is associated with gene mutations and dysfunction of ion channels. In contrast, degenerative fibrosis of the sinus node tissue plays an important role in the pathogenesis of acquired sick sinus syndrome. There is a close relationship between transforming growth factor-β1 mediated cardiac fibrosis and acquired arrhythmia. It is of interest to examine whether transforming growth factor-β1 is involved in the pathogenesis of acquired sick sinus syndrome.Overall, 110 patients with acquired SSS and 137 age/gender-matched controls were screened for transforming growth factor-β1 and cardiac sodium channel gene polymorphisms using gene sequencing or restriction fragment length polymorphism methods. An enzyme-linked immunosorbent assay was used to determine the serum level of transforming growth factor-β1.Two transforming growth factor-β1 gene polymorphisms (C-509T and T+869C and one cardiac sodium channel gene polymorphism (H588R have been identified. The C-dominant CC/CT genotype frequency of T869C was significantly higher in acquired sick sinus syndrome patients than in controls (OR 2.09, 95% CI 1.16-3.75, P = 0.01. Consistently, the level of serum transforming growth factor-β1 was also significantly greater in acquired sick sinus syndrome group than in controls (5.3±3.4 ng/ml vs. 3.7±2.4 ng/ml, P = 0.01. In addition, the CC/CT genotypes showed a higher transforming growth factor-β1 serum level than the TT genotype (4.25 ± 2.50 ng/ml vs. 2.71± 1.76 ng/ml, P = 0.028 in controls.Transforming growth factor-β1 T869C polymorphism, correlated with high serum transforming growth factor-β1 levels, is associated with susceptibility to acquired sick sinus syndrome.

  17. Ectopic tooth in maxillary sinus: Case series.

    Science.gov (United States)

    Ramanojam, Shandilya; Halli, Rajshekhar; Hebbale, Manjula; Bhardwaj, Smita

    2013-01-01

    Ectopic eruption of a tooth within the dentate region of the jaws is often noticed in clinical practice and is well documented in the literature. But the ectopic eruption into the non dentate region is rare and scantly documented. The maxillary sinus is one such a non dentate region, apart from nasal septum, mandibular condyle, coronoid process and the palate, to accommodate such ectopic eruptions of teeth. Due to its rarity and lack of consensus over its management, the incidence deserves to be added to the literature and discussed. Early surgical intervention for removal of ectopic tooth along with enucleation of the associated cyst, if any, is the treatment of choice.

  18. [Solitary naso-sinusal fibrous tumor].

    Science.gov (United States)

    Martínez, V; Jiménez, M L; Cuatrecasas, M; Jürgens, A; de Amesti, C; Orus, C; Fabra, J M

    1995-01-01

    Here we present two clinical cases of solitary naso-sinusal fibrous tumour. This tumour has a mesenchymal origin and has an evident pleural location, with well defined immunohistochemical and ultrastructural characteristics. The clinical manifestation is an apparent benign tumour with an inclination to local aggressiveness. The most effective treatment seems to be surgical removal, but given the low number of cases mentioned (there are only eight cases reported in international literature), and the tendency to eventual recurrence, called for cobalt therapy after surgery. The evolution of clinical cases is irregular.

  19. Influence of racemic higenamine on the sinus node.

    Science.gov (United States)

    Yu, Fengxia; Kong, Lingting; Wang, Shujuan

    2013-02-01

    The aim of this study was to explore the mechanism of racemic higenamine in the treatment of sick sinus syndrome (SSS). A total of 40 New Zealand rabbits were randomly divided into normal sinus node and damaged sinus node (SND) groups, and each group was randomly divided into treatment and control groups (n=10). The SND model was established by formaldehyde wet dressing of the sinus node area. The treatment groups were administered an intravenous infusion of 0.04 mg/kg racemic higenamine via the marginal ear vein within 5 min. The electrophysiological indicators of sinoatrial function, including the sinus node recovery time (SNRT), corrected sinus node recovery time (CSNRT), total sinoatrial conduction time (TSACT) and sinus cycle length (SCL), were determined before and 20 min after medication and the changes in these indicators were evaluated. The two control groups were administered 10 ml physiological saline. Following the administration of racemic higenamine, the SNRT, CSNRT, TSACT and SCL in the normal sinus node and SND groups were significantly shortened compared with those in the control groups (Pnode group (Pnode was statistically significant (Pnode self-discipline and improvement of sinoatrial and atrioventricular conduction function.

  20. An Odontoma Found in the Wake of Maxillary Sinusitis Onset

    OpenAIRE

    2013-01-01

    Sinusitis of dental origin is a relatively frequent entity, and odontomas are considered to be the most common odontogenic tumors of the oral cavity. Eruption and infection of odontomas are extremely rare. Here, we report an interesting case where odontoma was found in the wake of the maxillary sinusitis onset.

  1. Antenatal MR diagnosis of urinary hydrometrocolpos due to urogenital sinus

    Energy Technology Data Exchange (ETDEWEB)

    Subramanian, Subramanian; Sharma, Raju; Gamanagatti, Shivanand [All India Institute of Medical Sciences, Department of Radiodiagnosis, New Delhi (India); Agarwala, Sandeep [All India Institute of Medical Sciences, Department of Pediatric Surgery, New Delhi (India); Gupta, Prerna; Kumar, Sunesh [All India Institute of Medical Sciences, Department of Obstetrics and Gynaecology, New Delhi (India)

    2006-10-15

    Hydrometrocolpos is cystic dilatation of the vagina and uterus due to congenital vaginal obstruction. It may be secretory or urinary in character and manifests in the neonatal period with abdominal distension. Urinary hydrometrocolpos occurs in patients with urogenital sinus or cloacal anomaly. A rare case of antenatal MR diagnosis of urinary hydrometrocolpos due to urogenital sinus is presented. (orig.)

  2. CT-MPR invaluable in diagnosing odontogenic maxillary sinusitis

    Energy Technology Data Exchange (ETDEWEB)

    Aoki, Hideaki; Shimazu, Kaoru; Kamada, Morito; Shiroyama, Akihiro; Mouri, Daisuke; Yamashita, Masashi; Kawasaki, Yasunori; Koseki, Takakazu; Mouri, Manabu [Osaka Dental Univ. (Japan)

    2001-08-01

    In everyday examination, it is usual to encounter odontogenic maxillary sinusitis patients. Odontogenic maxillary sinusitis is generally best diagnosed by dental X-ray imaging. Many medical facilities not having a dental X-ray unit use coronal computed tomography (CT) images to diagnose odontogenic maxillary sinusitis. Coronal CT imaging causes artifacts, however due to dental prosthesises. Computed tomography-Multiplanar reformation (CT-MPR) imaging has proved useful in evaluating the paranasal sinus because it is not influenced by dental prosthesises. We evaluated the usefulness of CT-MPR for diagnosing odontogenic maxillary sinusitis by retrospectively analyzing 16 patients, with the following results. We couldn't diagnose all cases of odontogenic maxillary sinusitis in posteroanterior and Waters projection images. Panoramic radiography is needed to diagnose odontogenic maxillary sinusitis. Dental X-ray imaging missed some cases, but all cases were diagnosed by CT-MPR imaging, giving a 100% diagnosestic rate. CT-MPR imaging is thus at least as valuable or better than dental X-ray imaging in diagnosing odontogenic maxillary sinusitis. (author)

  3. X-sinus : geen toegevoegde waarde voor de huisarts

    NARCIS (Netherlands)

    Venekamp, Roderick; Cals, Jochen

    2016-01-01

    Acute rhinosinusitis is a common disorder in general practice. Although sinus X-ray has not been included in the NHG (Dutch College of General Practitioners) guideline ‘Acute rhinosinusitis’, general practitioners often order this investigation. However, sinus X-ray is of limited diagnostic value an

  4. How Are Nasal Cavity and Paranasal Sinus Cancers Staged?

    Science.gov (United States)

    ... the cribriform plate (the bone that separates the nose from the brain), and/or the maxillary sinus. T4a: Tumor has ... of the eye socket, the skin of the nose or cheek, the sphenoid sinus, the ... of the eye socket, the brain, the dura (the tissue covering the brain), some ...

  5. Posture-dependent chronotropic effect of carotid sinus massage

    DEFF Research Database (Denmark)

    Møller, M; Oxhøj, H; Mickley, H

    1987-01-01

    The hypertensive carotid sinus can be divided into cardioinhibitory (chronotropic) and vasodepressor components; the former can be evaluated by carotid sinus massage performed in the supine position. We present the case of a patient in whom the abnormal cardioinhibitory response could only...

  6. Relation between intraocular pressure and size of transverse sinuses

    Energy Technology Data Exchange (ETDEWEB)

    Kantarci, Mecit; Onbas, Omer; Alper, Fatih; Okur, Adnan [Atatuerk University, Department of Radiology, Medical Faculty, Erzurum (Turkey); Dane, Senol; Gumustekin, Kenan [Atatuerk University, Department of Physiology, Medical Faculty, Erzurum (Turkey); Aslankurt, Murat [Atatuerk University, Department of Ophtalmatology, Medical Faculty, Erzurum (Turkey); Yazici, Ahmet Taylan [Beyoglu Goez Egitim ve Arastirma Hastanesi, Istanbul (Turkey)

    2005-01-01

    There are asymmetries in the sizes of transverse sinus and intraocular pressure. The purpose of this study was to investigate possible relationships between the asymmetry of transverse sinuses in TOF MR venography and intraocular pressures of right and left eyes. In this study, subjects were 63 male and 42 female medical school students, aged 18-21 years (mean{+-}SD; 19.72{+-}0.67 years). Subjects with neurological and ophthalmologic disease, particularly dural sinus thrombosis, myopia, trauma and glaucoma, were excluded the study. Subjects were divided into five groups according to the magnitudes of the right- and left-transverse sinuses in MR venography results. There is a functional relation between intraocular pressures of the right and left eyes and asymmetry of the transverse sinus. If the transverse sinus on one side is larger and its venous drainage is greater, the intraocular pressure of the eye on this side is lower. It can be speculated that the transverse sinus size may be associated with pathogenesis of diseases with increased intraocular pressure such as glaucoma. We aim to determine the relation between the size and drainage of transverse sinuses in TOF MR venography and intraocular pressure in patients with open-angle glaucoma in our next study. (orig.)

  7. Maxillary sinus augmentation with microstructured tricalcium phosphate ceramic in sheep.

    NARCIS (Netherlands)

    Klijn, R.J.; Hoekstra, J.W.M.; Beucken, J.J.J.P van den; Meijer, G.J.; Jansen, J.B.M.J.

    2012-01-01

    OBJECTIVE: The objective of this study was to evaluate the biological performance of osteoinductive microstructured tricalcium phosphate (MSTCP) particles in maxillary sinus floor augmentation surgery in sheep. MATERIAL AND METHODS: Sinus floor augmentation was performed in eight Swifter sheep. In e

  8. Interventional and surgical treatment of cardiac arrhythmias in adults with congenital heart disease.

    Science.gov (United States)

    Koyak, Zeliha; de Groot, Joris R; Mulder, Barbara J M

    2010-12-01

    Arrhythmias are a major cause of morbidity, mortality and hospital admission in adults with congenital heart disease (CHD). The etiology of arrhythmias in this population is often multifactorial and includes electrical disturbances as part of the underlying defect, surgical intervention or hemodynamic abnormalities. Despite the numerous existing arrhythmia management tools including drug therapy, pacing and ablation, management of arrhythmias in adults with CHD remains difficult and challenging. Owing to improvement in mapping and ablation techniques, ablation and arrhythmia surgery are being performed more frequently in adults with CHD. However, there is little information on the long-term results of these treatment strategies. The purpose of this article is therefore to review the available data on nonpharmacological treatment of cardiac arrhythmias in adult patients with CHD and to give an overview of the available data on the early and late outcomes of these treatment strategies.

  9. Covert lung abscess as a cause of atrial arrhythmia: case report

    Institute of Scientific and Technical Information of China (English)

    LI Mei; LIAO De-ning; ZHANG Jia-you; YIN Ren-fu; WU Zong-gui

    2005-01-01

    @@ Atrial arrhythmia is common in clinic. Recently, it was revealed that ectopic impulses originating in sleeve muscles around the orifices of pulmonary veins (PVs) were deemed to be one of the most important reasons that trigger or drive atrial arrhythmia, which was called myocardial sleeve related arrhythmia. Electrical isolation by radiofrequency ablation is becoming highlight and proved to be an effective method for the arrhythmia. We report a 55-year-old man with paroxysmal atrial tachy-arrhythmias admitted for PV electrical isolation. An abscess was discovered in right inferior lung before the operation. The arrhythmia was disappeared after resection of the abscess. It implies that for such sufferer and recidivist after ablation, the factors outside the pulmonary veins should be excluded or treated as far as possible, especially before radiofrequency ablation therapy.

  10. GROSS AND HISTOLOGICAL STUDY OF CORONARY SINUS AND ITS CLINICAL RELEVANCE

    Directory of Open Access Journals (Sweden)

    Harsh Kumar

    2015-12-01

    Full Text Available The coronary sinus is important in many electrophysiological procedures including arrhythmia ablation, biventricular pacing and for deployment of an array of cardiac devices. The advent of advanced invasive and interventional cardiac treatment and management tools for common disorders like heart failure has made understanding of CS anatomy necessary. MATERIAL AND METHODS The study has been conducted in fifty normal hearts available. Length of CS was measured. CS ostium and the Thebesian valve were exposed and measurements taken. Histological study of CS was done. RESULT AND CONCLUSION The presence of myocardial fibres in the wall of CS and their arrangement in the form of circular, longitudinal and tangentially arranged fibres may have regulating function on the flow of blood in the CS. The connection of the muscle fasciculi with the left and the right atrium may have selective role in the conduction and act as an accessory pathway. In the present study the average length of the CS was 30 mm; in the majority (96.0% the CS ostium was oval. In most of the cases (84.0% CS ostium was guarded by thebesian valve, which was semilunar in shape (74%. The valve covered variable area of the ostium.

  11. [Cerebellar abscesses secondary to infection of an occipital dermal sinus].

    Science.gov (United States)

    García Galera, A; Martínez León, M I; Pérez da Rosa, S; Ros López, B

    2013-09-01

    A dermal sinus is a congenital defect arising from a closure failure of the neural tube that results in different degrees of communication between the skin and the central nervous system. A dermal sinus can occur anywhere from the root of the nose to the conus medullaris, and the occipital location is the second most common. Dermal sinuses are often found in association with dermoid or epidermoid cysts and less frequently with teratomas. Patients with an occipital dermoid cyst associated with a dermal sinus can develop meningitis and/or abscesses as the first clinical manifestation of the disease due to the dermoid cyst itself becoming abscessed or to the formation of secondary abscesses; few cases of the formation of secondary abscesses have been reported. We present a case of a dermoid cyst associated with an infected dermal sinus and posterior development of cerebellar abscesses and hydrocephalus.

  12. MR imaging of dural sinus thrombosis: a case report

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Si Kyung; Han, Chun Hwan; Lee, Moon Ok; Park, Kyung Joo; Lee, Joo Hyuk [Kang Nam General HosPital, Public Corporation, Seoul (Korea, Republic of)

    1993-01-15

    We present a case of angiographically confirmed transverse and sigmoid sinus thrombosis, image with MR, in a 20 year old male with a history of otitis media and maxillary sinusitis. T1-weighted image demonstrated an iso signal intensity mass with tubular-shaped low signal intensity in right transverse and sigmoid sinus. The thrombus had high signal intensity on T2-weighted image. The signal intensity of the thrombus on Gd-DTPA enhanced T1-weighted image was unusually high similar to that of transverse sinus. Although dural sinus thrombosis has a non-specific MR signal intensity, findings of MRI in this case may serve as an aid in future evaluation of venous thrombosis.

  13. Management of orbital complications of sinusitis in pediatric patients.

    Science.gov (United States)

    Kinis, Vefa; Ozbay, Musa; Bakir, Salih; Yorgancilar, Ediz; Gun, Ramazan; Akdag, Mehmet; Sahin, Muhammed; Topcu, Ismail

    2013-09-01

    The most common reason of orbital infections is sinusitis. Orbital complications of sinusitis are mostly seen in children. Loss of vision and intracranial infections are among the complications of sinusitis. Prompt diagnosis and treatment is very important in the management of orbital complications. The orbital complication can be in the form of cellulitis or abscess. A retrospective review of 26 pediatric patients with orbital complications due to sinusitis was presented in this study. Of 26 patients, there were 13 cases of preseptal cellulitis, 2 cases of orbital cellulitis, and 11 cases of subperiosteal abscess. We grouped the preseptal and orbital cellulites in one category and the subperiosteal abscess in the other. All patients in the cellulitis group recovered by medical treatment. All the patients were treated by surgical drainage. Early diagnosis and appropriate treatment method are vital for the treatment of orbital complications secondary to sinusitis.

  14. Maxillary odontogenic sinusitis, complicated with cerebral abscess--case report.

    Science.gov (United States)

    Onişor-Gligor, F; Lung, T; Pintea, B; Mureşan, O; Pop, P B; Juncar, M

    2012-01-01

    Maxillary sinus inflammation, when untreated or incorrectly treated, may extend locoregionally, the remaining paranasal sinuses being the first affected anatomical structures. This is why the understanding of the inflammatory pathology of the maxillary sinus, and particularly of the complications it can generate, is extremely important. The purpose of this presentation is to point out that inflammations of the paranasal sinuses are susceptible to develop complications in certain conditions and threaten the patient's life due to the proximity of vital structures. This is the case of a 16 years old male patient who developed a left maxillary and frontal sinusitis, complicated with cerebral abscess. Early detection, multidisciplinary approach and proper indication of surgical treatment, as well as early suspicion of complication, especially in young male adolescents, are extremely important.

  15. A Case of Pyriform Sinus Fistula Infection with Double Tracts

    Directory of Open Access Journals (Sweden)

    Masato Shino

    2014-01-01

    Full Text Available Pyriform sinus fistula is a rare clinical entity and the precise origin remains controversial. The fistula is discovered among patients with acute suppurative thyroiditis or deep neck infection of the left side of the neck and is usually located in the left pyriform sinus. To the best of our knowledge, only a single tract has been reported to be responsible for pyriform sinus fistula infection. We present a case of a 13-year-old female patient with a pyriform sinus fistula that caused a deep infection of the left side of the neck and showed double-tract involvement discovered during surgical resection of the entire fistula. Both tracts arose around the pyriform sinus and terminated at the upper portion of the left lobe of the thyroid.

  16. Aspergilloma of the maxillary sinus: report of a case

    Energy Technology Data Exchange (ETDEWEB)

    Kang, Ju Han; Kim, Gyu Tae; Choi, Yong Suk; Hwang, Eui Hwan [School of Dentistry, Kung Hee University, Seoul (Korea, Republic of); Yu, Jae Jung [Kangdong Scared Heart Hospital, Hallym Medical Center, Seoul (Korea, Republic of)

    2010-12-15

    Aspergilloma of the paranasal sinus is a non-invasive form of aspergillosis, most often in the maxillary sinus. This case presents an 86-year-old female with aspergilloma of the left maxillary sinus. The patient's chief complaint was intermittent pain on the left maxillary first premolar area. A radiopacification of the left maxillary sinus was observed on the panoramic radiograph. Cone-beam computed tomography revealed complete radiopacification of the left maxillary sinus and scattered multiple radiopaque mass inside the lesion. Biopsy was performed under local anesthesia. On microscopic examination, numerous fungal hyphae, which branch at acute angle, were observed. The diagnosis was made as an aspergilloma based on the histopathologic examination.

  17. 病窦综合征患者51例临床分析%Clinical analysis of 51 cases of sick sinus syndrome

    Institute of Scientific and Technical Information of China (English)

    王黎; 马兰(通讯作者)

    2013-01-01

    Objective:to explore clinical features and dynamic electrocardiogram characteristics in the patients with sick sinus syndrome. Methods:based on their dynamic electrocardiogram records, the patients with RR intervals no less than 3.0s were selected for the retrospective analysis of medical history, clinical symptoms, and dynamic electrocardiogram. Results:1. The patients with sick sinus syndrome often have the underlying heart diseases manifested as coronary heart disease, hypertension, and inferior myocardial infarction.2. Most of the patients suffer from recurrent syncope. But some patients have none such feeling, especial y those with RR intervals longer than 8.0s. 3. Sick sinus syndrome wil cause complicating arrhythmias: Besides sinus arrest and junctional escape beat, there are also commonly various atrial arrhythmia and occasional y ventricular arrhythmia. 4. Long RR intervals tend to occur at the night.The longest RR intervals of some patients with rapid supraventricular arrhythmia frequently occur at the end of supraventricular arrhythmia. Conclusion:dynamic electrocardiogram could be used as one of the important indicators for evaluation of sinoatrial node function.%目的:探讨病窦综合征患者的临床及动态心电图特点。方法:从病窦综合征患者的动态心电图记录中挑选长RR间距≥3.0s的患者,对其病史、临床症状、动态心电图等进行回顾性分析。结果:①病窦综合征患者常见于冠心病、原发性高血压病、下壁心肌梗死等基础性心脏病;②多数患者均有反复晕厥症状发生,但也有部分患者无明显感觉,此现象在长RR间距>8.0s的患者中尤为常见;③可并发多种心律失常:除窦性停搏及继发的交界性逸搏外,以各种房性心律失常为主,室性心律失常少见。④长RR间距多发生在夜间,而合并有快速性室上性心律失常的患者,其最长RR间距往往发生于快速室上性心律失常终止时

  18. Sublingual Immunotherapy for Allergic Fungal Sinusitis.

    Science.gov (United States)

    Melzer, Jonathan M; Driskill, Brent R; Clenney, Timothy L; Gessler, Eric M

    2015-10-01

    Allergic fungal sinusitis (AFS) is a condition that has an allergic basis caused by exposure to fungi in the sinonasal tract leading to chronic inflammation. Despite standard treatment modalities, which typically include surgery and medical management of allergies, patients still have a high rate of recurrence. Subcutaneous immunotherapy (SCIT) has been used as adjuvant treatment for AFS. Evidence exists to support the use of sublingual immunotherapy (SLIT) as a safe and efficacious method of treating allergies, but no studies have assessed the utility of SLIT in the management of allergic fungal sinusitis. A record review of cases of AFS that are currently or previously treated with sublingual immunotherapy from 2007 to 2011 was performed. Parameters of interest included serum IgE levels, changes in symptoms, Lund-McKay scores, decreased sensitization to fungal allergens associated with AFS, and serum IgE levels. Ten patients with diagnosed AFS were treated with SLIT. No adverse effects related to the use of SLIT therapy were identified. Decreases in subjective complaints, exam findings, Lund-McKay scores, and serum IgE levels were observed. Thus, sublingual immunotherapy appears to be a safe adjunct to the management of AFS that may improve patient outcomes.

  19. Surveillance of fetal arrhythmias in the outpatient setting: current limitations and call for action.

    Science.gov (United States)

    Freire, Grace

    2015-12-01

    Surveillance of fetal arrhythmias in the outpatient setting remains limited by lack of monitoring modalities. Despite technological advances made in the field of obstetrics, existing devices are not currently suitable to monitor fetal arrhythmias. In this report, the author describes the current and developing fetal heart rate monitoring technologies including the recent introduction of hand-held Doppler monitors for outpatient surveillance of fetal arrhythmias.

  20. Near-infrared imaging of the sinuses: preliminary evaluation of a new technology for diagnosing maxillary sinusitis

    Science.gov (United States)

    Mahmood, Usama; Cerussi, Albert; Dehdari, Reza; Nguyen, Quoc; Kelley, Timothy; Tromberg, Bruce; Wong, Brian

    2010-05-01

    Diagnosing sinusitis remains a challenge for primary care physicians. There is a need for a simple, office-based technique to aid in the diagnosis of sinusitis without the cost and radiation risk of conventional radiologic imaging. We designed a low-cost near-infrared (NIR) device to transilluminate the maxillary sinuses. The use of NIR light allows for greater interrogation of deep-tissue structures as compared to visible light. NIR imaging of 21 patients was performed and compared with computed tomography (CT) scans. Individual maxillary sinuses were scored on a scale from 0 to 2 based on their degree of aeration present on CT and similarly based on the NIR signal penetration into the maxilla on NIR images. Our results showed that air-filled and fluid/tissue-filled spaces can be reasonably distinguished by their differing NIR signal penetration patterns, with average NIR imaging scores for fluid-filled maxillary sinuses (0.93+/-0.78, n=29) significantly lower than those for normal maxillary sinuses (1.62+/-0.57, n=13) (p=0.003). NIR imaging of the sinuses is a simple, safe, and cost-effective modality that can potentially aid in the diagnosis of sinusitis. Long-term, significant device refinement and large clinical trials will be needed to determine the diagnostic accuracy of this technique.

  1. Clinical application of echocardiography in detection of foetal arrhythmia:a retrospective study of 451 foetuses

    Institute of Scientific and Technical Information of China (English)

    赵博文; 张松英; 潘美; 徐海珊; 寿金朵; 吕江红; 汤富刚; 范妙英; 范晓明; 林莎

    2004-01-01

    @@Foetal arrhythmia is defined as any irregular foetal cardiac rhythm or regular rhythm at a rate outside the reference range of 120 to 160 beats/minute. Foetal echocardiography permits accurate determination of the structural characteristics and the nature of the arrhythmia in foetuses. It is particularly indicated for mothers from high-risk groups. Management of diagnosed heart disease, including foetal arrhythmia, leads either to the termination of pregnancy or to optimal postnatal care of baby and mother. This retrospective study examined the application of foetal echocardiography in the diagnosis of foetal arrhythmia and its clinical significance.

  2. Atrial and ventricular function in thalassemic patients with supraventricular arrhythmias

    Directory of Open Access Journals (Sweden)

    Vitantonio Di Bello

    2009-04-01

    Full Text Available The aims of this study were to evaluate through Color Doppler Myocardial Imaging (CDMI echocardiography if atrial or ventricular myocardial alterations could be detectable in patients with thalassemia major (THAL and if these alterations could be considered as predictive elements for supra-ventricular arrhythmic events. Twenty-three patients with THAL underwent clinical and electrocardiographic evaluation; patients were grouped in THAL1 (9 with supra-ventricular arrhythmias and THAL2 (14 without arrhythmias; 12 healthy subjects were considered as control group (C. We examined through conventional 2D Color Doppler echocardiography some morphological and functional parameters regarding left ventricular (LV systolic and diastolic function, and through CDMI the velocities at mitral annulus level, the regional LV and left atrial (LA strain and strain rate. All THAL patients had LV dimension (pless than 0.05, LA area (p less than 0.01 and E/Em ratio (pless than 0.001 to be significantly higher than controls. The mitral annulus longitudinal velocities were significantly lower in THAL1 than in THAL2 (pless than 0.001; the E/Em ratio was higher in THAL1 than THAL2 (pless than 0.001. The THAL1 showed a lower systolic strain rate of atrial wall than THAL2 and C (pless than 0.05. The multiple regression highlighted a significantly inverse correlation among E/Em and atrial strain (pless than 0.02. CDMI showed both THAL subgroups had subtle systolic and diastolic left ventricular myocardial alterations, which could represent the onset of developing “iron cardiomyopathy” and are related to supra-ventricular arrhythmia. Monitoring these parameters in the THAL patients could contribute to decisions about follow-up and therapy.

  3. Optogenetic Light Crafting Tools for the Control of Cardiac Arrhythmias.

    Science.gov (United States)

    Richter, Claudia; Christoph, Jan; Lehnart, Stephan E; Luther, Stefan

    2016-01-01

    The control of spatiotemporal dynamics in biological systems is a fundamental problem in nonlinear sciences and has important applications in engineering and medicine. Optogenetic tools combined with advanced optical technologies provide unique opportunities to develop and validate novel approaches to control spatiotemporal complexity in neuronal and cardiac systems. Understanding of the mechanisms and instabilities underlying the onset, perpetuation, and control of cardiac arrhythmias will enable the development and translation of novel therapeutic approaches. Here we describe in detail the preparation and optical mapping of transgenic channelrhodopsin-2 (ChR2) mouse hearts, cardiac cell cultures, and the optical setup for photostimulation using digital light processing.

  4. [Cholesterol granuloma in paranasal sinus. An unfrequent pseudotumor in maxillary sinuses].

    Science.gov (United States)

    García de Hombre, Alina María; Pérez Peñate, Armando

    2005-01-01

    The cholesterol granuloma is well known in the middle ear, in the mastoid antrum and the air cells of temporal bone, mostly related to a chronic infectious process. There are other localizations such as the pleura, lung, pericardium, kidneys, arterial wall, nerves, brain, testicles, lymphatic ganglion and in the paranasals sinuses. Its localization in the mediofacial area is very unfrequent, having only been described 44 cases up to the year 2002. We present a 42 year-old patient, who required surgical treatment because of a increase in the volume of area her left facial of one month's old. It resulted to be secundary to an expansion of the maxilar sinus, such as seen on the computerized tomography carried out on the patient. The diagnosis was cholesterol granuloma, performed, through the anatomo-pathology study. We review the litterature on this subject and analyse the possible etiologic cause of this lesion, its clinic, diagnostic methodology and treatment.

  5. Clinical Study on the Etiology of Postthyroidectomy Skin Sinus Formation

    Directory of Open Access Journals (Sweden)

    Shan Jin

    2017-01-01

    Full Text Available Background. Thyroidectomy is one of the most frequently performed surgical procedures worldwide. Despite technical advances and high experience of thyroidectomy of specialized centers, it is still burdened by a significant rate of postoperative complications. Among them, the skin sinus formation is an extremely rare postthyroidectomy complication. Here, we first report the incidence of the skin sinus formation after thyroidectomy to identify the causes for skin sinus formation after thyroidectomy and to discuss its prevention and treatment options. Methods. A retrospective analysis was carried out of patients who underwent excision operation of fistula for postthyroidectomy skin sinus formation. Data were retrieved from medical records department of the Affiliated Hospital of Inner Mongolia Medical University. Results. Of the 5,686 patients who underwent thyroid surgery, only 5 patients (0.088% had developed skin sinus formation. All 5 patients successfully underwent complete excision of fistula. Conclusion. Infection, foreign body, thyroid surgery procedure, combined disease, and iatrogenic factors may be related with skin sinus formation after thyroidectomy. To reduce the recurrence of postoperative infections and sinus formation, intra- and postoperative compliance with aseptic processing, intraoperative use absorbable surgical suture/ligature, repeated irrigation and drainage, and postoperative administration of anti-inflammatory treatment are to be followed.

  6. Evolution of the Sinus Venosus from Fish to Human

    Directory of Open Access Journals (Sweden)

    Bjarke Jensen

    2014-03-01

    Full Text Available The sinus venosus, the cardiac chamber upstream of the (right atrium, is a severely underinvestigated structure. Yet, its myocardium harbors the cardiac pacemaker in all vertebrates. In human, ectopic pacemaking and subsequent pathologies may originate from sinus venosus-derived myocardium surrounding the coronary sinus and the superior caval vein. In ectothermic vertebrates, i.e., fishes, amphibians and reptiles, the sinus venosus aids atrial filling by contracting prior to the atrium (atria. This is facilitated by the sinuatrial delay of approximately the same duration as the atrioventricular delay, which facilitates atrial filling of the ventricles. In mammals, the sinuatrial delay is lost, and the sinus venosus-derived myocardium persists as an extensive myocardial sheet surrounding the caval veins, which is activated in synchrony with the myocardium of the atria. The caval vein myocardium is hardly of significance in the healthy formed heart, but we suggest that the sinus venosus functions as a chamber during development when cardiac output, heart rate, blood pressure and architecture is much more like that of ectothermic vertebrates. The remodeling of the sinus venosus in mammals may be an adaptation associated with the high heart rates necessary for postnatal endothermy. If so, the endothermic birds should exhibit a similar remodeling as mammals, which remains to be investigated.

  7. Penatalaksanaan Sinus Preaurikuler Tipe Varian Dengan Pit pada Heliks Desenden Postero-Inferior

    Directory of Open Access Journals (Sweden)

    Jacky Munilson

    2013-01-01

    Full Text Available AbstrakSinus preaurikuler merupakan kelainan kongenital berupa adanya lubang kecil pada telinga luar yangbiasanya terdapat di anterior dari heliks asendens. Disamping lokasi tersebut, sinus preaurikuler juga dapatditemukan posterior dari liang telinga luar yang dikenal sebagai sinus preaurikuler tipe varian. Sinus preaurikulertipe varian merupakan kasus yang jarang dilaporkan. Kebanyakan kasus tidak menunjukkan gejala, sebagianlainnya mengalami masalah infeksi berupa keluarnya cairan, atau terbentuknya abses. Penatalaksanaan sinuspreaurikuler adalah dengan pengangkatan sinus secara lengkap. Kekambuhan merupakan masalah yang dapattimbul jika tidak diangkat secara lengkap.Dilaporkan satu kasus sinus preaurikuler tipe varian dengan pitberada pada heliksdesendens postero-inferior dekatlobulus pada seorang anak laki-laki umur 3 tahun 6 bulan dan ditatalaksana dengan sinektomi.Kata kunci: Sinus preaurikuler, sinus preaurikuler tipe varian, sinektomi.AbstractPreauricular sinusis a congenital malformation that manifests as pit in the extenal ear, usually located in theanterior limb of ascending helix. In additional to these location, preauricular sinus can also be found in the posterior ofthe external ear canal, known as the preauricular sinus with variant type. Preauricular sinus variant type is a rarelyreported. Almost cases are asymptomatic, but others are infectious with discharge or abscess formation. Themanagement of preauricular sinus is excision sinus completely. Recurrence is the problem that happen if the excisionwas not complete.One case of preauricular sinus variant type with pit on the postero-inferior decending helixnearlobulus in a boy 3 years and 6 months old and managed bysinectomy.Keywords: Preauricular sinus, Preauricular sinus variant type, sinectom

  8. Healing results of prolonged acute frontal sinusitis treated with endoscopic sinus surgery.

    Science.gov (United States)

    Wide, Kristina; Antila, Jukka; Sipilä, Jukka; Suonpää, Jouko; Parkkola, Riitta

    2002-12-01

    In a marked part of patients suffering from acute frontal sinusitis, the symptoms do not resolve after initial therapy (antibiotics and/or trephination). The prolongation of the healing or recurrences may be caused by persistent inflammation or by structural abnormalities at the nasofrontal connection. During the last decade endoscopic surgery (FES) has become a very useful method to restore the frontonasal drainage although long term results of this kind of population are rare. We evaluated the results of endoscopic surgery in two patient groups (total number of 50) both operated after prolongation (persistent symptoms after 4 weeks) of the initial acute phase of the frontal sinusitis. The first group (A, 15 patients, first trephined) was followed-up 4 years, the number of recurrences after the first FES was 60% and in the other group (B, no initial trephination) with over 6 months follow-up, 91% of patients had recurrences. In group A pre- and postoperative CT-scanning was used to determine the possible anatomical variations that could be causing the failures. All but 3 patients showed some kind of abnormal anatomical variation. In group B only preoperative CT was done. In most cases the reasons for recurrences of frontal sinusitis were polyps and/or chronic inflammation at the ethmoidal region.

  9. Near-infrared imaging for management of chronic maxillary sinusitis

    Science.gov (United States)

    You, Joon S.; Cerussi, Albert E.; Kim, James; Ison, Sean; Wong, Brian; Cui, Haotian; Bhandarkar, Naveen

    2015-03-01

    Efficient management of chronic sinusitis remains a great challenge for primary care physicians. Unlike ENT specialists using Computed Tomography scans, they lack an affordable and safe method to accurately screen and monitor sinus diseases in primary care settings. Lack of evidence-based sinusitis management leads to frequent under-treatments and unnecessary over-treatments (i.e. antibiotics). Previously, we reported low-cost optical imaging designs for oral illumination and facial optical imaging setup. It exploits the sensitivity of NIR transmission intensity and their unique patterns to the sinus structures and presence of fluid/mucous-buildup within the sinus cavities. Using the improved NIR system, we have obtained NIR sinus images of 45 subjects with varying degrees of sinusitis symptoms. We made diagnoses of these patients based on two types of evidence: symptoms alone or NIR images along. These diagnostic results were then compared to the gold standard diagnosis using computed tomography through sensitivity and specificity analysis. Our results indicate that diagnosis of mere presence of sinusitis that is, distinguishing between healthy individuals vs. diseased individuals did not improve much when using NIR imaging compared to the diagnosis based on symptoms alone (69% in sensitivity, 75% specificity). However, use of NIR imaging improved the differential diagnosis between mild and severe diseases significantly as the sensitivity improved from 75% for using diagnosis based on symptoms alone up to 95% for using diagnosis based on NIR images. Reported results demonstrate great promise for using NIR imaging system for management of chronic sinusitis patients in primary care settings without resorting to CT.

  10. Giant complex odontoma in maxillary sinus.

    Science.gov (United States)

    Carvalho Visioli, Adriano Rossini; de Oliveira E Silva, Cléverson; Marson, Fabiano Carlos; Takeshita, Wilton Mitsunari

    2015-01-01

    In this manuscript, we present a rare case report of giant complex odontoma in the maxillary sinus, where the applied therapy included complete excision of the lesion with a conservative approach. Odontomas are also called benign growth abnormalities or hamartomas. They represent a more common type of odontogenic tumor and are related to various disorders such as bad dental placements, expansion, increased volumetric bone, and no eruption of permanent teeth. Usually they have an asymptomatic evolutionary course. The etiologic factors, although obscure, are related to local trauma, infection, and genetic factor. The structural composition of an odontoma consists of mature dental tissues. Odontomas can be differentiated according to their anatomical presentations: Compound odontoma-clusters of several denticles and complex odontoma-well defined tumefaction mass. The diagnosis can be performed by radiographic examination.

  11. Acute Vision Loss Following Endoscopic Sinus Surgery

    Directory of Open Access Journals (Sweden)

    Serena Byrd

    2017-01-01

    Full Text Available A 41-year-old female with a history of uterine cancer and Celiac and Raynaud’s Disease presented to our institution with frequent migraines and nasal congestion. She underwent functional endoscopic sinus surgery (FESS and experienced acute unilateral vision loss postoperatively. Rapid recognition of the etiology and effective treatment are paramount given the permanent and irreversible vision loss that can result. Arterial vasospasm following FESS is rare. Patients with autoimmune diseases have perhaps an increased risk for vasospasm secondary to an increased vasoreactive profile. We present the first documented case of nitroglycerin sublingual therapy to successfully treat ophthalmic artery vasospasm following FESS. Nitroglycerin sublingual therapy is a promising treatment for ophthalmic vasospasm secondary to its ability to cross the blood-ocular barrier, its rapid onset of action, and its ability to promote relaxation of vascular smooth muscle.

  12. Radiotherapy in cancer of the paranasal sinuses

    Energy Technology Data Exchange (ETDEWEB)

    Schlappack, O.K.; Dobrowsky, W.; Schmid, A.P.; Schratter, M.; Grasl, M.; Swoboda, H.; Mailath, G.; Pavelka, R.; Braun, O.

    1986-05-01

    Carcinomas of the paranasal sinuses are usually advanced when diagnosed and present a therapeutic challenge. During the period between February 1970 and June 1981 44 patients were treated. 22 received postoperative irradiation, seven in combination with chemotherapy. 18 patients were treated with radiation alone, eleven with concomitant chemotherapy. Four patients received preoperative irradiation, three in combination with chemotherapy. The three-year survival is 43% and the five-year survival 33%. For those 26 patients who were irradiated pre- or postoperatively with or without concomitant chemotherapy the five-year survival is 45%. We believe the patient will be afforded the greatest opportunity for cure with the combined efforts of the radiotherapist and the surgeon. The combination of chemotherapy and radiotherapy did not provide better results but increased acute and chronic toxicity of the therapy.

  13. Acute Vision Loss Following Endoscopic Sinus Surgery

    Science.gov (United States)

    Antisdel, Jastin

    2017-01-01

    A 41-year-old female with a history of uterine cancer and Celiac and Raynaud's Disease presented to our institution with frequent migraines and nasal congestion. She underwent functional endoscopic sinus surgery (FESS) and experienced acute unilateral vision loss postoperatively. Rapid recognition of the etiology and effective treatment are paramount given the permanent and irreversible vision loss that can result. Arterial vasospasm following FESS is rare. Patients with autoimmune diseases have perhaps an increased risk for vasospasm secondary to an increased vasoreactive profile. We present the first documented case of nitroglycerin sublingual therapy to successfully treat ophthalmic artery vasospasm following FESS. Nitroglycerin sublingual therapy is a promising treatment for ophthalmic vasospasm secondary to its ability to cross the blood-ocular barrier, its rapid onset of action, and its ability to promote relaxation of vascular smooth muscle.

  14. Subcapsular sinus macrophages limit acute gammaherpesvirus dissemination.

    Science.gov (United States)

    Frederico, Bruno; Chao, Brittany; Lawler, Clara; May, Janet S; Stevenson, Philip G

    2015-08-01

    Lymphocyte proliferation, mobility and longevity make them prime targets for virus infection. Myeloid cells that process and present environmental antigens to lymphocytes are consequently an important line of defence. Subcapsular sinus macrophages (SSMs) filter the afferent lymph and communicate with B-cells. How they interact with B-cell-tropic viruses is unknown. We analysed their encounter with murid herpesvirus-4 (MuHV-4), an experimentally accessible gammaherpesvirus related to Kaposi's sarcoma-associated herpesvirus. MuHV-4 disseminated via lymph nodes, and intranasally or subcutaneously inoculated virions readily infected SSMs. However, this infection was poorly productive. SSM depletion with clodronate-loaded liposomes or with diphtheria toxin in CD169-diphtheria toxin receptor transgenic mice increased B-cell infection and hastened virus spread to the spleen. Dendritic cells provided the main route to B-cells, and SSMs slowed host colonization, apparently by absorbing virions non-productively from the afferent lymph.

  15. Heart rate turbulence and variability in patients with ventricular arrhythmias

    Directory of Open Access Journals (Sweden)

    Diego Tarricone

    2009-08-01

    Full Text Available Background: To evaluate the changes in autonomic neural control mechanisms before malignant ventricular arrhythmias, we measured heart rate variability (HRV and heart rate turbulence (HRT in patients with ventricular tachycardia or fibrillation (Group I; n=6, non sustained ventricular tachycardia (Group II; n=32, frequent premature ventricular beats (Group III; n=26 and with ICD implantation (Group IV; n=11. Methods: Time domain parameters of HRV and turbulence onset (TO and slope (TS were calculated on 24 hour Holter recordings. Normal values were: SDNN > 70 msec for HRV, TO <0% and TS >2.5 msec/RR-I for HRT. Results: Whereas SDNN was within normal range and similar in all study groups, HRT parameters were significantly different in patients who experienced VT/VF during Holter recording. Abnormal TO and/or TS were present in 100% of Group I patients and only in about 50% of Group II and IV. On the contrary, normal HRT parameters were present in 40-70% of Group II, III and IV patients and none of Group I. Conclusions: These data suggest that HRT analysis is more suitable than HRV to detect those transient alterations in autonomic control mechanisms that are likely to play a major trigger role in the genesis of malignant cardiac arrhythmias. (Heart International 2007; 3: 51-7

  16. NEW APPROACH TO ANORECTAL SINUS DISEASE

    Directory of Open Access Journals (Sweden)

    Singh

    2014-07-01

    Full Text Available AIM: Retrospective analysis of 23 cases of persistent ano-rectal abscesses and fistulas with an unusual clinical presentation (absent external opening in all cases resulting in modification of treatment modalities to prevent the dreaded complications of recurrence and incontinence. METHODS: 23 patients presenting with ano-rectal sinus disease from January 2012 to June 2013 were retrospectively reviewed. Patients were collected from two different institutions of Kanpur. Intra-operatively the probe was introduced from the internal opening and extended outwards towards the skin taking the shortest route followed by incising the tip of the probe. This converted the sinus tract into a fistula after which either of the two techniques was employed: (a Surgery (fistulotomy alone in cases where small chunk of sphincteric muscle mass was to be cut. Here the internal opening was below the ano-rectal ring. (b Surgery along with placement of kshar-sutra in cases where internal opening was too near to the ano-rectal ring or above it. Sphincteric part of the tract was saved from cutting by encircling it with kshar-sutra during surgery. RESULTS: All our patients had symptomatic relief and we achieved complete healing of the wound in all of them with no incidence of persistence of the disease after six months of follow-up, no incidence of recurrence and no incidence of anal incontinence. CONCLUSIONS: Thorough clinical examination resulted in identifying the peculiarity of our cases and also helped us in establishing the etiological factors along with the involved anatomy. Special procedure adopted in our study helped us in preventing complications and ensuring complete healing of the wounds

  17. Traumatic dural venous sinus thrombosis: A Mini Review

    Directory of Open Access Journals (Sweden)

    Moscote-Salazar Luis Rafael

    2016-09-01

    Full Text Available The dural venous sinus thrombosis is a benign disease, representing about 1% of cerebral vascular events. In some cases the development of the disease increased intracranial pressure or symptomatic epilepsy. The development towards a dural venous sinus thrombosis is rare, but is a condition to be considered before the development of ischemic vascular events and a history of recent head trauma. Intracranial hematomas or skull fractures can lead to the establishment of obstructive pathology of the dural venous sinuses. The knowledge of this entity is necessary for the critical care staff and neurosurgery staff.

  18. Measurement of velocity of air flow in the sinus maxillaris.

    Science.gov (United States)

    Müsebeck, K; Rosenberg, H

    1979-03-01

    Anemometry with the hot wire and hot film technique previously described, enables the rhinologist to record slow and rapidly changing air flow in the maxillary sinus. The advantages and disadvantages of this method are considered. Anemometry together with manometry may be designated sinumetry and used as a diagnostic procedure following sinuscopy in chronic maxillary sinus disease. The value of the function from velocity of time allows the estimation of flow-volume in the sinus. Furthermore, the method is useful to evaluate the optimal therapy to restore ventilation in the case of an obstructed ostium demonstrated before and after surgical opening in the inferior meatus.

  19. Adenoid Cystic Carcinoma of the Nasal Cavity and Paranasal Sinuses

    DEFF Research Database (Denmark)

    Amit, Moran; Binenbaum, Yoav; Sharma, Kanika;

    2013-01-01

    Objectives To identify independent predictors of outcome in patients with adenoid cystic carcinoma (ACC) of the paranasal sinuses and skull base. Design Meta-analysis of the literature and data from the International ACC Study Group. Setting University-affiliated medical center. Participants......%, respectively. The local recurrence rate was 36.6%, and the regional recurrence rate was 7%. Distant metastasis, most commonly present in the lung, was recorded in 106 patients (29.1%). In the international cohort, positive margins and ACC of the sphenoid or ethmoidal sinuses were significant predictors...... of outcome (p sinuses, whereas perineural invasion is not. Adjuvant treatment apparently...

  20. A RARE CASE OF ADENOID CYSTIC CARCINOMA OF ETHMOID SINUS

    Directory of Open Access Journals (Sweden)

    Bharath

    2013-02-01

    Full Text Available ABSTRACT: Adenoid cystic carcinoma is more common in minor sa livary glands, uncommon in parotid gland and rare in paranasal sinuses. These ar e more aggressive and fatal. Such tumors of the accessory nasal sinuses causing proptosis have be en reported so rarely in ophthalmic literature. An adult aged 31 years presented with pro ptosis of right eye, nasal obstruction and bleeding from right nose. CT scan showed soft tissu e attenuation mass with destruction of bony structures and extension to right orbit. Biopsy was done through trans nasal route. A histological diagnosis of Adenoid cystic carcinoma of ethmoid sinus was made

  1. The most often causes of odontogenic maxillary sinusitis

    OpenAIRE

    Račić Alek; Dimitrijević Milovan; Đukić Vojko

    2004-01-01

    In the period 2000-2002, 40 patients with odontogenic sinusitis were examined at the Institute for ENT and Maxillofacial Surgery, Clinical Centre of Serbia. Oroantral communication was detected in 40% of the patients, oroantral fistula in 35%, sinus foreign bodies in 15% and other conditions in 10% of the cases. The extraction of the upper lateral teeth was the cause of odontogenic sinusitis in 65% of the cases. Given the specific tooth, the first upper molar was the most often cause of the c...

  2. [Odontogenic maxillary sinusitis: peculiarities of diagnostics and treatment].

    Science.gov (United States)

    Davydov, D V; Gvozdovich, V A; Stebunov, V E; Manakina, A Iu

    2014-01-01

    The objective of the present work was to improve the quality of diagnostics and the choice of optimal therapy for the management of odontogenic maxillary sinusitis associated with the localization of foreign bodies in the lateral parts of the maxillary sinuses. To this effect, multispiral computed tomography was used to enable the exact location of the foreign body inside the sinus and to choose the optimal approach for the surgical intervention. The modified Coldwell-Luc procedure was employed as the most adequate technique in the given clinical condition.

  3. Necrotizing Fasciitis of the Nose Complicated with Cavernous Sinus Thrombosis

    Directory of Open Access Journals (Sweden)

    D. Swaminath

    2014-01-01

    Full Text Available Necrotizing fasciitis is a rapidly progressive life threatening bacterial infection of the skin, the subcutaneous tissue, and the fascia. We present a case of necrotizing fasciitis involving the nose complicated by cavernous sinus thrombosis. Few cases of septic cavernous sinus thrombosis have been reported to be caused by cellulitis of the face but necrotizing fasciitis of the nose is rare. It is very important to recognize the early signs of cavernous thrombosis. Treatment for septic cavernous sinus thrombosis is controversial but early use of empirical antibiotics is imperative.

  4. Aplasia and hypoplasia of the maxillary sinus: A case series

    Directory of Open Access Journals (Sweden)

    Nasim Jafari-Pozve

    2014-01-01

    Full Text Available Maxillary sinus aplasia and hypoplasia are rare conditions that can cause symptoms such as headaches and voice alteration. The majority of patients are asymptomatic, but these conditions must be noticed for importance of differential diagnosis such as infection and neoplasms. Conventional radiographs could not differentiate between inflammatory mucosal thickening, neoplasm, and hypoplasia of the sinus. Computed tomography (CT and also cone beam computed tomography (CBCT are the proper modalities to detect these conditions. In the present study, CBCT findings of three cases with maxillary sinus hypoplasia and aplasia are reported.

  5. Aspergillosis of the sphenoid sinus simulating a pituitary tumor

    Energy Technology Data Exchange (ETDEWEB)

    Larranaga, J.; Fandino, J.; Gomez-Bueno, J.; Botana, C.; Rodriguez, D.; Gonzalez-Carrero, J.

    1989-09-01

    Sphenoidal aspergillosis is an unusual cause of sella turcica enlargement. Pituitary abscess secondary to Aspergillus had been reported. In the present case, a woman with sphenoid sinus aspergillosis mimiced a pituitary tumor. This patient survived her infection with intact pituitary function following a transsphenoidal approach. No postoperative amphotericine-B and 5-fluorocytosine were necessary. CT scan revealed a mass occupying the sphenoid sinus extending to the sella turcica. Factors that should alert the clinican to the presence of a sphenoidal and pituitary abscess in a patient with sella turcica enlargement are prior episodes of sinusitis, meningitis and immunosuppression and, as in the present case, hyperglycemia. (orig.).

  6. Differentiation induction of mouse cardiac stem cells into sinus node-like cells by co-culturing with sinus node.

    Science.gov (United States)

    Fang, Yi-Bing; Liu, Xuan; Wen, Jing; Tang, Xiao-Jun; Yu, Feng-Xu; Deng, Ming-Bin; Wu, Chang-Xue; Liao, Bin

    2014-01-01

    Sinus nodal cells can generate a diastolic or "pacemaker" depolarization at the end of an action potential driving the membrane potential slowly up to the threshold for firing the next action potential. It has been proved that adult cardiac stem cells (CSCs) can differentiate into sinus nodal cells by demethylating agent. However, there is no report about adult CSCs-derived sinus nodal cells with pacemaker current (the funny current, I f). In this study, we isolated the mouse adult CSCs from mouse hearts by the method of tissue explants adherence. The expression of c-kit protein indicated the isolation of CSCs. Then we co-cultured mouse CSCs with mouse sinus node tissue to induce the differentiation of these CSCs into sinus node-like cells, which was proved by identifying the enhanced expression of marker proteins cTnI, cTnT and α-Actinin with Immunofluorescence staining. At the same time, with whole-cell patch-clamp we detected the I f current, which can be blocked by CsCl, in these differentiated cells. In conclusion, by confirming specific I f current in the induced node-like cells, our work shows a method inducing differentiation of CSCs into sinus node-like cells, which can provide helpful information for the further research on sick sinus syndrome.

  7. Prevalence of bony septa, antral pathology, and dimensions of the maxillary sinus from a sinus augmentation perspective: A retrospective cone-beam computed tomography study

    Energy Technology Data Exchange (ETDEWEB)

    Tadinada, Aditya; Jalali, Elnaz; Al Salman, Wesam; Jambhekar, Shantanu; Katechia, Bina [University of Connecticut, School of Dental Medicine, Farmington (United States); Almas, Khalid [Div. of Periodontology, University of Dammam, College of Dentistry, Dammam (Saudi Arabia)

    2016-06-15

    Sinus elevation procedures have become a routine and reliable way to gain bone volume in the edentulous maxilla for dental implant placement. Presence of bony septations and pathology in the maxillary sinus often cause complications leading to graft or implant failure or both. The aim of this study was to retrospectively evaluate the prevalence of pathology, direction of the septa, and sinus width measured at 2 mm, 5 mm, and 10 mm from the sinus floor in maxillary sinuses using cone-beam computed tomography (CBCT). Seventy-two sinuses from 36 random preoperative CBCT scans referred for implant therapy were retrospectively evaluated for the number, prevalence, and direction of bony septations and presence of pathology. Width of the sinus was also measured at 2 mm, 5 mm, and 10 mm from the sinus floor to account for the amount of bone available for implant placement. Maxillary sinus septa were found in 59.7%. Presence of a single septum was noted in 20 sinuses (27.7%), followed by two septa in 17 sinuses. The most common direction of the septum was the transverse direction. Retention pseudocyst and mucosal thickening were the most commonly seen abnormality/pathology. Based on the high prevalence of septa and sinus pathology in this sample, a preoperative CBCT scan might be helpful in minimizing complications during sinus augmentation procedures for dental implant therapy.

  8. Reliability of transesophageal pacing in the assessment of sinus node function in patients with sick sinus syndrome.

    Science.gov (United States)

    Alboni, P; Paparella, N; Cappato, R; Pedroni, P; Candini, G C; Antonioli, G E

    1989-02-01

    The purpose of this study was to find out whether transesophageal pacing could be utilized for assessment of sinus node function in patients with sick sinus syndrome (SSS). In 17 patients with SSS (study group) we compared the results of sinus node tests obtained both in the basal state and after pharmacological autonomic blockade by endocavitary stimulation and, 24 hours later, by transesophageal pacing. In another group of 17 patients with SSS (control group), we compared the results obtained by two endocavitary studies. In "study group", sinus cycle length (SCL) and corrected sinus node recovery time (CSRT) did not show significant differences between the two studies both in the basal state and after autonomic blockade, whereas sinoatrial conduction time (SACT) was more prolonged during esophageal pacing (P less than 0.01). In "control group", sinus node measures did not show significant differences between the two studies. In the "study group," the following coefficients of correlation were obtained in the basal state; SCL, r = 0.65, CSRT, r = 0.57, SACT, r = 0.52 and after autonomic blockade: SCL, r = 0.95, CSRT, r = 0.62 and SACT, r = 0.53. In the basal state, the correlation for SCL and CSRT between the two studies was lower in the "study group" than in the "control group" (P less than 0.05), whereas after autonomic blockade the correlation for sinus node measures did not show significant differences between the two groups of patients. These data suggest that transesophageal study influences the autonomic tone regulating the sinus node; however, it is not responsible for important variations in sinus node measures.(ABSTRACT TRUNCATED AT 250 WORDS)

  9. Discriminative sparse coding of ECG during ventricular arrhythmias using LC-K-SVD approach.

    Science.gov (United States)

    Kalaji, I; Balasundaram, K; Umapathy, K

    2015-01-01

    Ventricular tachycardia (VT) and ventricular fibrillation (VF) are two major types of ventricular arrhythmias that results due to abnormalities in the electrical activation in the ventricles of the heart. VF is the lethal of the two arrhythmias, which may lead to sudden cardiac death. The treatment options for the two arrhythmias are different. Therefore, detection and characterization of the two arrhythmias is critical to choose appropriate therapy options. Due to the time-varying nature of the signal content during cardiac arrhythmias, modeling and extracting information from them using time and frequency localized functions would be ideal. To this effect, in this work, we perform discriminative sparse coding of the ECG during ventricular arrhythmia with hybrid time-frequency dictionaries using the recently introduced Label consistent K-SVD (LC-K-SVD) approach. Using 944 segments of ventricular arrhythmias extracted from 23 patients in the Malignant Ventricular Ectopy and Creighton University Tachy-Arrhythmia databases, an overall classification accuracy of 71.55% was attained with a hybrid dictionary of Gabor and symlet4 atoms. In comparison, for the same database and non-trained dictionary (i.e the original dictionary) the classification accuracy was found to be 62.71%. In addition, the modeling error using the trained dictionary from LC-K-SVD approach was found to be significantly lower to the one using the non-trained dictionary.

  10. Novel energy modalities for catheter ablation of cardiac arrhythmias : Pitfalls and possibilities of potent power sources

    NARCIS (Netherlands)

    Neven, K.G.E.J.

    2014-01-01

    The acceptance of catheter ablation as treatment for cardiac arrhythmias is amongst others dependent on its success rate, a high initial success rate will increase physician and patient acceptance. One of the reasons why recurrence of arrhythmia after ablation is substantial is non-transmurality of

  11. Risk prediction of ventricular arrhythmias and myocardial function in Lamin A/C mutation positive subjects

    DEFF Research Database (Denmark)

    Hasselberg, Nina E; Edvardsen, Thor; Petri, Helle;

    2014-01-01

    Mutations in the Lamin A/C gene may cause atrioventricular block, supraventricular arrhythmias, ventricular arrhythmias (VA), and dilated cardiomyopathy. We aimed to explore the predictors and the mechanisms of VA in Lamin A/C mutation-positive subjects.METHODS AND RESULTS: We included 41 Lamin A...

  12. The risk of arrhythmias following coronary artery bypass surgery: do smokers have a paradox effect?

    LENUS (Irish Health Repository)

    Al-Sarraf, Nael

    2010-11-01

    Smoking is reported to increase the risk of arrhythmias. However, there are limited data on its effects on arrhythmias following coronary artery bypass graft (CABG). This is a retrospective review of a prospective database of all CABG patients over an eight-year period. Our cohort (n=2813) was subdivided into: current (n=1169), former (n=837), and non-smokers (n=807). Predictors of arrhythmias following CABG in relation to smoking status were analysed. Atrial arrhythmias occurred in 942 patients (33%). Ventricular arrhythmias occurred in 48 patients (2%) and high-grade atrioventricular block occurred in five patients (0.2%). Arrhythmias were lower in current smokers than former and non-smokers (29% vs. 40% vs. 39%, respectively P<0.001). Logistic regression analysis showed 30% arrhythmia risk reduction in smokers compared to non-smokers [odds ratio (OR) 0.7, 95% confidence intervals (CI) 0.5-0.8] and this effect persisted after accounting for potential confounders while former smokers had the same risk as non-smokers (OR 1.04, CI 0.9-1.3). There were no significant differences in mortality. Smokers are less prone to develop arrhythmias following CABG. This paradox effect is lost in former smokers. This effect is possibly due to a lower state of hyper adrenergic stimulation observed in smokers than non-smokers following the stress of surgery.

  13. Dentigerous cyst associated with an ectopic third molar in the maxillary sinus: A rare entity

    Directory of Open Access Journals (Sweden)

    Srinivasa Prasad T

    2007-01-01

    Full Text Available Ectopic eruption of teeth into a region other than the oral cavity is rare although there have been reports of teeth in the nasal septum, mandibular condyle, coronoid process, palate, chin and maxillary sinus. Occasionally, a tooth may erupt in the maxillary sinus and present with local sinonasal symptoms attributed to chronic sinusitis. We present a case of an ectopic maxillary third molar tooth that caused chronic purulent sinusitis in relation to the right maxillary sinus.

  14. Ectopic eruption of a maxillary third molar tooth in the maxillary sinus: a case report.

    Science.gov (United States)

    Büyükkurt, M Cemil; Tozoglu, Sinan; Aras, M Hamdi; Yolcu, Umit

    2005-08-15

    Ectopic eruption of teeth into regions other than the oral cavity is rare although there have been reports of teeth in the nasal septum, mandibular condyle, coronoid process, palate, chin, and maxillary sinus. Occasionally, a tooth may erupt in the maxillary sinus and present with local sinonasal symptoms attributed to chronic sinusitis. We present a case of an ectopic maxillary third molar tooth that caused chronic sinusitis in the maxillary sinus.

  15. Aconitine Challenge Test Reveals a Single Exposure to Air Pollution Causes Increased Cardiac Arrhythmia Risk in Hypertensive Rats - Abstract

    Science.gov (United States)

    Epidemiological studies demonstrate a significant association between arrhythmias and air pollution exposure. Sensitivity to aconitine-induced arrhythmia has been used repeatedly to examine the factors that increase the risk of such cardiac electrical dysfunction. In this study, ...

  16. A Novel Automatic Detection System for ECG Arrhythmias Using Maximum Margin Clustering with Immune Evolutionary Algorithm

    Directory of Open Access Journals (Sweden)

    Bohui Zhu

    2013-01-01

    Full Text Available This paper presents a novel maximum margin clustering method with immune evolution (IEMMC for automatic diagnosis of electrocardiogram (ECG arrhythmias. This diagnostic system consists of signal processing, feature extraction, and the IEMMC algorithm for clustering of ECG arrhythmias. First, raw ECG signal is processed by an adaptive ECG filter based on wavelet transforms, and waveform of the ECG signal is detected; then, features are extracted from ECG signal to cluster different types of arrhythmias by the IEMMC algorithm. Three types of performance evaluation indicators are used to assess the effect of the IEMMC method for ECG arrhythmias, such as sensitivity, specificity, and accuracy. Compared with K-means and iterSVR algorithms, the IEMMC algorithm reflects better performance not only in clustering result but also in terms of global search ability and convergence ability, which proves its effectiveness for the detection of ECG arrhythmias.

  17. Sinusitis in children and adolescents with chronic or recurrent headache: a case-control study.

    Science.gov (United States)

    Senbil, Nesrin; Gürer, Y K Yavuz; Uner, Ciğdem; Barut, Yaşar

    2008-02-01

    The aim of this study was to determine the frequency of misdiagnosis of sinus headache in migraine and other primary headache types in the children and adolescents with chronic or recurrent headaches. Children with chronic or recurrent headaches (n = 310) were prospectively evaluated. Data collection for each patient included history of previously diagnosed sinusitis due to headache, and additional sinusitis complaints (such as fever, cough, nasal discharge, postnasal discharge) at the time of sinusitis diagnosis, and improvement of the headache following treatment of sinusitis. If sinus radiographs existed they were recorded. The study included 214 patients with complete data. One hundred and sixteen (54.2%) patients have been diagnosed as sinusitis previously and 25% of them had at least one additional complaint, while 75% of them had none. Sinusitis treatment had no effect on the headaches in 60.3% of the patients. Sinus graphy had been performed in 52.8%, and 50.4% of them were normal. The prevalence of sinus headache concomitant with primary headache, and only sinus headache was detected in 7 and 1%, respectively, in our study. Approximately 40% of the patients with migraine and 60% of the patients with tension-type headache had been misdiagnosed as "sinus headache". Children with chronic or recurrent headaches are frequently misdiagnosed as sinus headache and receive unnecessary sinusitis treatment and sinus graphy.

  18. Radiological aspects of Aspergillosis in the paranasal sinuses

    Energy Technology Data Exchange (ETDEWEB)

    Kopp, W.; Fotter, R.; Ebner, F.; Beaufort, F.; Stammberger, H.

    1986-08-01

    A retrospective radiographic study was performed on 142 proven cases of Aspergillosis in the paranasal sinuses. In all but two cases the mycosis was unilateral and in all cases the maxillary sinus was infected. A common radiographic presentation was a homogeneous opacity of the infected maxillary sinus, while about 50% of the cases showed nonspecific infectious changes of other paranasal sinuses additionally. Earlier stages of the disease showed an intraluminal soft tissue mass, representing the mycelium conglomerate. Bone destruction due to Aspergillosis could not be proven. 58% of the cases presented with intraluminal structures of metallic density. Histochemical studies proved these to consist mainly of tertiary Calciumphosphate. These concrements are considered to be pathognomonic of Aspergillosis.

  19. Haematopoietic tissue presenting as a sphenoid sinus mass: case report

    Energy Technology Data Exchange (ETDEWEB)

    Joseph, M.; Rajshekhar, V.; Chandy, M.J. [Dept. of Neurological Sciences, Christian Medical College Hospital, Vellore (India)

    2000-02-01

    We report an incidentally discovered mass in the sphenoid sinus in a patient with beta thalassaemia and sickle-cell disease which proved to be an isolated site of extramedullary haematopoiesis in the skull. (orig.)

  20. Evaluation of the microbiology of chronic ethmoid sinusitis.

    Science.gov (United States)

    Doyle, P W; Woodham, J D

    1991-01-01

    In a prospective study, patients with the diagnosis of chronic ethmoid sinusitis were evaluated microbiologically by using biopsy specimens of the ethmoid sinus mucosa. Microbiology cultures were performed on 94 specimens from 59 patients. Staphylococcus aureus and members of the family Enterobacteriaceae were the most frequent classical pathogenic bacteria isolated. Coagulase-negative staphylococci were the most common overall isolates. Streptococcus pneumoniae and Haemophilus influenzae were infrequent isolates. No anaerobes, viruses, or Chlamydia trachomatis organisms were identified. Results of this study showed organism isolation frequencies different from those found in other studies of chronic sinusitis reported in the literature. The predominance of S. aureus and members of the family Enterobacteriaceae could have an effect on the antimicrobial therapy for chronic ethmoid sinusitis. PMID:1774242

  1. [Clinical and roentgenological manifestations of the silent sinus syndrome].

    Science.gov (United States)

    Piskunov, S Z; Piskunov, I S; Zav'ialov, F N; Solodilova, N M

    2011-01-01

    Analysis of the results of the examination and treatment of four patients presenting with the silent sinus syndrome provided materials for the generalized characteristic of clinical and roentgenological manifestations of this condition.

  2. Popeye proteins: muscle for the aging sinus node.

    Science.gov (United States)

    Boukens, Bastiaan J; Christoffels, Vincent M

    2012-03-01

    The electrical impulses that dictate the rhythm of the heartbeat in normal situations and during exercise or stress are initiated by a small number of sinus node pacemaker cells. Senescence and dysfunction of the sinus node affects many people later in life, causing physiologically inappropriate heart rates, but the underlying mechanisms are not well understood. In this issue of the JCI, Froese and colleagues show that deficiency in either Popeye domain containing 1 (Popdc1) or Popdc2 leads to sinus node dysfunction under stressed conditions in aged mice. The mechanism reported to underlie the effects of Popdc1/2 deficiency in mice may cause the stress-induced sinus node dysfunction found in many aged individuals and may point to new strategies for therapeutic intervention.

  3. A CASE DISCUSSION ON PILONIDAL SINUS: CASE REPORT

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    Hiremath Sangamesh

    2012-10-01

    Full Text Available A pilonidal sinus is an acquired condition seen more in males than females, as males have more hairs, the buttocks moves and hairs breaks off by friction and collect in the cleft which makes local inflammation turns to sinus formation. The commonly used surgical technique for this disorder includes excision, primary closure and excision with reconstructive flap. However patients require longer hospitalization, the risk of reoccurrence, and infection of wound after operation is high and expensive. We can see the similarity between shalyaja nadivrana described in Sushruta Samhita and pilonidal sinus. Sushruta advised many para-surgical techniques viz – kshara sutra for nadi vrana hence kshara sutra therapy was tried in a case of pilonidal sinus. Kshara sutra treatment not only minimizes complications and reoccurrences but also facilitates the patient to resume early working with less discomfort as well as reduced time and cost.

  4. Environmental Risk Factors in Patients with Noninvasive Fungal Sinusitis

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    Badr Eldin Mostafa

    2016-01-01

    Full Text Available Objective. The aim of our study was to try to determine the possible environmental risk factors for noninvasive fungal sinusitis in Egyptian patients. Methods. This is a prospective epidemiological case control study on the environmental risk factors of noninvasive fungal sinusitis. It included 60 patients and 100 age and sex matched controls. Results. There was a statistically significant relation between apartment floor, surface area, exposure to dust, exposure to cockroaches, poor air conditioning, and fungal sinusitis. Yet, no statistical significance was found between allergy related occupations, exposure to animals or plants, although their percentages were higher among cases, smoking, and urban or rural residence. Conclusion. We suggest that for patients with noninvasive fungal sinusitis a change in their living environment must be implied with better exposure to sunlight, larger well ventilated homes, proper cleaning of dust and cockroach extermination, and if possible the judicious use of air conditioners.

  5. Oral surgery as risk factor of odontogenic maxillary sinusitis

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    Račić Alek

    2006-01-01

    Full Text Available In order to determine the risk factors of odontogenic maxillary sinusitis, a total number of 40 patients with this pathological condition was examined in three-year period. Oroantral communication was detected in 40% of patients, oroantral fistula in 25%, sinus foreign bodies in 15% and other pathological conditions in 10% of cases. The extraction of the upper lateral teeth was the cause of odontogenic sinusitis in 65% patients. Given the specific tooth, the first upper molar was the most common cause of the condition, i.e. in 40% of cases. It may be concluded that odontogenic sinusitis is the complication of the oral cavity surgery in 85% of patients, what should be taken into consideration in prevention.

  6. Intraoral mass presenting as maxillary sinus carcinoma: a case report.

    Science.gov (United States)

    Mahdavi, Omid; Boostani, Najmehalsadat; Karimi, Sharareh; Tabesh, Adel

    2013-11-01

    Sinonasal undifferentiated carcinoma is an extremely rare malignancy of the paranasal sinuses and nasal cavity. It is of unknown etiology, and occurs more commonly in the elderly men, with a routinely shown aggressive behavior and poor prognosis for survival. Radiographically, it looks like severe osteomyelitis. Histopathologic study is essential to confirm diagnosis, and the undifferentiated histologic appearance often necessitates immunohistochemical studies for differentiation from other high-grade neoplasms. We present an 83-year-old man complaining of pain and unilateral swelling on the left side of the face due to a rare malignant tumor of maxillary sinus origin, a sinonasal undifferentiated carcinoma. He underwent hemimaxillectomy and radiotherapy, but refused chemotherapy. Maxillary sinus malignancy may be presented with unspecific symptoms mimicking sinusitis or dental pain. Coming across such symptoms, the physician or dentist must consider malignancies as well, and carry out medical and dental workups.

  7. Intraoral mass presenting as maxillary sinus carcinoma: a case report.

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    Omid Mahdavi

    2013-12-01

    Full Text Available Sinonasal undifferentiated carcinoma is an extremely rare malignancy of the paranasal sinuses and nasal cavity. It is of unknown etiology, and occurs more commonly in the elderly men, with a routinely shown aggressive behavior and poor prognosis for survival. Radiographically, it looks like severe osteomyelitis. Histopathologic study is essential to confirm diagnosis, and the undifferentiated histologic appearance often necessitates immunohistochemical studies for differentiation from other high-grade neoplasms. We present an 83-year-old man complaining of pain and unilateral swelling on the left side of the face due to a rare malignant tumor of maxillary sinus origin, a sinonasal undifferentiated carcinoma. He underwent hemimaxillectomy and radiotherapy, but refused chemotherapy. Maxillary sinus malignancy may be presented with unspecific symptoms mimicking sinusitis or dental pain. Coming across such symptoms, the physician or dentist must consider malignancies as well, and carry out medical and dental workups.

  8. Managing the patient with episodic sinus tachycardia and orthostatic intolerance.

    Science.gov (United States)

    Narichania, Aalap D; Schleifer, J William; Shen, Win-Kuang

    2014-01-01

    Patients with episodic sinus tachycardia and associated orthostatic intolerance present a diagnostic and management dilemma to the clinician. We define this group of disorders to include sinus node reentrant tachycardia (SNRT), inappropriate sinus tachycardia (IAST), and postural orthostatic tachycardia syndrome (POTS). After a brief review of the current understanding of the pathophysiology and epidemiology of this group of disorders, we focus on the diagnosis and management of IAST and POTS. Our approach attempts to recognize the considerable overlap in pathophysiology and clinical presentation between these two heterogeneous conditions. Thus, we focus on a mechanism-based workup and therapeutic approach. Sinus tachycardia related to identifiable causes should first be ruled out in these patients. Next, a basic cardiovascular and autonomic workup is suggested to exclude structural heart disease, identify a putative diagnosis, and guide therapy. We review both nonpharmacologic and pharmacologic therapy, with a focus on recent advances. Larger randomized control trials and further mechanistic studies will help refine management in the future.

  9. Superior Sagittal Sinus Thrombosis Complicating Typhoid Fever in a Teenager

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    P. O. Okunola

    2012-01-01

    Full Text Available Cerebral venous sinus (sinovenous thrombosis (CSVT is a rare life-threatening disorder in childhood that is often misdiagnosed. CSVT encompasses cavernous sinus thrombosis, lateral sinus thrombosis, and superior sagittal sinus thrombosis (SSST. We present an adolescent girl who was well until two weeks earlier when she had a throbbing frontal headache and fever with chills; she later had dyspnoea, jaundice, melena stool, multiple seizures, nuchal rigidity, and monoparesis of the right lower limb a day before admission. Urine test for Salmonella typhi Vi antigen was positive, and Widal reaction was significant. Serial cranial computerized tomography scans revealed an expanding hypodense lesion in the parafalcine region consistent with SSST or a parasagittal abscess. Inadvertent left parietal limited craniectomy confirmed SSST. She recovered completely with subsequent conservative management. Beyond neuropsychiatric complications of Typhoid fever, CSVT should be highly considered when focal neurologic deficits are present.

  10. Ambulatory Cardiac Monitoring for Discharged Emergency Department Patients with Possible Cardiac Arrhythmias

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    Donald Scheiber

    2014-03-01

    Full Text Available Introduction: Many emergency department (ED patients have symptoms that may be attributed to arrhythmias, necessitating outpatient ambulatory cardiac monitoring. Consensus is lacking on the optimal duration of monitoring. We describe the use of a novel device applied at ED discharge that provides continuous prolonged cardiac monitoring. Methods: We enrolled discharged adult ED patients with symptoms of possible cardiac arrhythmia. A novel, single use continuous recording patch (Zio®Patch was applied at ED discharge. Patients wore the device for up to 14 days or until they had symptoms to trigger an event. They then returned the device by mail for interpretation. Significant arrhythmias are defined as: ventricular tachycardia (VT ≥4 beats, supraventricular tachycardia (SVT ≥4 beats, atrial fibrillation, ≥3 second pause, 2nd degree Mobitz II, 3rd degree AV Block, or symptomatic bradycardia. Results: There were 174 patients were enrolled and all mailed back their devices. The average age was 52.2 (± 21.0 years, and 55% were female. The most common indications for device placement were palpitations 44.8%, syncope 24.1% and dizziness 6.3%. Eighty-three patients (47.7% had ≥1 arrhythmias and 17 (9.8% were symptomatic at the time of their arrhythmia. Median time to first arrhythmia was 1.0 days (IQR 0.2-2.8 and median time to first symptomatic arrhythmia was 1.5 days (IQR 0.4-6.7. 93 (53.4% of symptomatic patients did not have any arrhythmia during their triggered events. The overall diagnostic yield was 63.2% Conclusion: The Zio®Patch cardiac monitoring device can efficiently characterize symptomatic patients without significant arrhythmia and has a higher diagnostic yield for arrhythmias than traditional 24-48 hour Holter monitoring. It allows for longer term monitoring up to 14 days. [West J Emerg Med. 2014;15(2:194–198.

  11. [The maxillary sinus: evolution and function in aging].

    Science.gov (United States)

    Dargaud, J; Cotton, F; Buttin, R; Morin, A

    2003-03-01

    The maxillary sinus, or Highmore's antrum, is located in the maxillary bone. The maxillary, above the buccal cavity, below the orbital cavity and outside the nasal fossa, is going to take a part in the formation of the three cavities which surround it. Although voluminous, it is consists of a light bone. This distinctive feature is essentially due to the fact that the maxillary has a cavity. The maxillary sinus occupies the upper 2/3s of this maxillary bone. It is the largest of the facial structure's cavities. Its volume is very variable, depending on the individual, the condition of their edentulousness and their age. We find small, average or large sinuses. This sinus communicates with the corresponding nasal fossa by a canal. It opens at the level of the nasofrontalis duct by a meatic ostium, an ostium located at the top of the meatus nasi medius, i.e. under the floor of the sinus. This highly positioned drainage location easily explains the problems that sinus pathologies can come up against. The sinus is lined with a mucous membrane and we can point out that in the normal condition this mucous membrane adheres weakly to the bone. It is more or less thick as a function of the pathologies to which the sinus has been subjected, or even as a function of the geographical location where the individual lives. The imaging of this sinus as a function of age is not obvious due to the fact that it is invisible throughout embryonic and foetal development, and that it only becomes visible to X-rays relatively late, at about 6 years old. Its role is important at the level of the growth of the facial structure because it is always easier to have growth around cavities. It also has a mechanical role concerning the transmission of shockwaves during traumas. In old individuals, due to the condition of the edentulousness, the volume of the sinus is larger; in fact one can note the resorption of the alveolar bone. The maxillary sinus is a cavity which plays a very important role

  12. Infarct size and recurrence of ventricular arrhythmias after defibrillator implantation

    Energy Technology Data Exchange (ETDEWEB)

    Sutter, J. de; Tavernier, R.; Kazmierckzak, J.; Buyzere, M. de; Clement, D.L. [Department of Cardiology, University Hospital Gent, Gent (Belgium); Wiele, C. van de; Dierckx, R.A. [Department of Nuclear Medicine, University Hospital Gent (Belgium); Jordaens, L. [Thoraxcenter, University Hospital Rotterdam-Dijkzigt (Netherlands)

    2000-07-01

    Infarct size as determined by perfusion imaging is an independent predictor of mortality after implantable cardioverter defibrillator (ICD) implantation in patients with coronary artery disease (CAD) and life-threatening ventricular arrhythmias (VA). However, its value as a predictor of VA recurrence and hospitalisation after ICD implantation is unknown. Therefore, the objective of this study was to evaluate whether infarct size as determined by perfusion imaging can help to identify patients who are at high risk for recurrence of VA and hospitalisation after ICD implantation. We studied 56 patients with CAD and life-threatening VA. Before ICD implantation, all patients underwent a uniform study protocol including a thallium-201 stress-redistribution perfusion study. A defect score as a measurement of infarct size was calculated using a 17-segment 5-point scoring system. Study endpoints during follow-up were documented episodes of appropriate anti-tachycardia pacing and/or shocks for VA and cardiac hospitalisation for electrical storm (defined as three or more appropriate ICD interventions within 24 h), heart failure or angina. After a mean follow-up of 470{+-}308 days, 22 patients (39%) had recurrences of VA. In univariate analysis, predictors for recurrence were: (a) ventricular tachycardia (VT) as the initial presenting arrhythmia (86% vs 59% for patients without ICD therapy, P=0.04), (b) treatment with {beta}-blockers (36% vs 68%, P=0.03) and (c) a defect score (DS) {>=}20 (64% vs 32%, P=0.03). In multivariate analysis, VT as the presenting arrhythmia ({chi}2=5.51, P=0.02) and a DS {>=}20 ({chi}2=4.22, P=0.04) remained independent predictors. Cardiac hospitalisation was more frequent in patients with a DS {>=}20 (44% vs 13% for patients with DS <20, P=0.015) and this was particularly due to more frequent hospitalisations for electrical storm (24% vs 3% for patients with DS<20, P=0.037). The extent of scarring determined by perfusion imaging can separate

  13. Cerebral Venous-Sinus Thrombosis: A Case Series Analysis

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    Nahid Ashjazadeh

    2011-09-01

    Full Text Available Background: Cerebral venous-sinus thrombosis is an uncommon form but important cause of stroke, especially in young-aged women. Methods: We performed a retrospective descriptive-analytical study in which 124 patients with cerebral venous-sinus thrombosis, who referred to Nemazee Hospital, Shiraz University of Medical Sciences from January 2000 to March 2008, were included, and their demographic, etiologic, radiological and prognostic characteristics were evaluated. Results: The patients' mean age was 34.01±10.25. Eighty seven (70.16% were women and 37 (29.83% were men. The most frequent clinical manifestations were headache, papilledema and seizures. Fifty seven (65.51% women took oral contraceptive pills. Twenty of 57 women (35.08% took the pill longer than one month to be able to fast in Ramadan or perform the Hajj ceremonies. In the mean time they developed cerebral venous-sinus thrombosis. Superior sagital sinus, with or without lateral sinuses, was the most involved area (70.96%. High mortality and morbidity rates (14.51% and 35.48%, respectively were found in patients. Poor prognostic factors at the time of admission were stupor and coma (P=0.001 and evidence of hemorrhage in primary CT scan (P=0.005. Conclusion: Taking oral contraceptive pills was a main factor associated with cerebral venous-sinus thrombosis. Clinical manifestations, prognostic factors, common involved sinuses and image findings of this study were similar to those of other studies. Health care policy makers should design a plan to warn susceptible women of the risk of cerebral venous-sinus thrombosis, and to educate them the ways to prevent it

  14. Popeye proteins: muscle for the aging sinus node

    OpenAIRE

    Boukens, Bastiaan J.; Christoffels, Vincent M.

    2012-01-01

    The electrical impulses that dictate the rhythm of the heartbeat in normal situations and during exercise or stress are initiated by a small number of sinus node pacemaker cells. Senescence and dysfunction of the sinus node affects many people later in life, causing physiologically inappropriate heart rates, but the underlying mechanisms are not well understood. In this issue of the JCI, Froese and colleagues show that deficiency in either Popeye domain containing 1 (Popdc1) or Popdc2 leads t...

  15. Osteolytic nasal polyp of the maxillary sinus mimicking malignancy

    Directory of Open Access Journals (Sweden)

    Arvind Karikal

    2014-01-01

    Full Text Available We present an osteolytic nasal polyp of the maxillary sinus with clinical features and radiographic features mimicking that of a malignancy. Maxillary sinusitis being a common inflammatory condition progressed to cause destruction of the maxillary bone and spread into the facial soft tissue, which is quite a rare occurrence. We have discussed in detail the clinical, radiological, histopathology and management of this uncommon presentation of a common case.

  16. Etiologies and Treatments of Odontogenic Maxillary Sinusitis: A Systematic Review

    OpenAIRE

    Akhlaghi, Fahimeh; Esmaeelinejad, Mohammad; Safai, Pooria

    2015-01-01

    Context: Maxillary sinusitis is an important issue in dentistry and maxillofacial surgery. This study aims to present a systematic review of etiologies and treatments of odontogenic maxillary sinusitis. Evidence Acquisition: An electronic database search was performed based on related MeSH keywords. Articles published between January 2001 and December 2014 was selected according to the inclusion criteria. The information extracted from various studies was categorized in various tables. Result...

  17. Paranasal sinus anatomy of Aegyptopithecus: Implications for hominoid origins

    OpenAIRE

    Rossie, James B.; Simons, Elwyn L.; Gauld, Suellen C.; Rasmussen, D. Tab

    2002-01-01

    The East African Early Miocene apes, or proconsulids, have often been considered to be among the earliest members of the Hominoidea, as defined by the divergence of the Cercopithecoidea, but this hypothesis is only weakly supported by available fossil evidence. The ethmofrontal sinus is one of a few morphological features that may link proconsulids with later hominoids. Here we present direct evidence of an ethmofrontal sinus in an early Oligocene stem catarrhine, Aegyptopithecus zeuxis. The ...

  18. Cyst associated with ectopic tooth in the unilateral maxillary sinus

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    Elif Karadeli

    2016-03-01

    Full Text Available Teeth are rarely found out side the alveolar arch. Nasal septum, mandibular condyle, coronoid process and maxillary sinus are areas where ectopic teeth are usually observed. We hereby a case of a 38-year-old woman presented with hoarseness and post-nasal drainage, which was present for the last 1 year with ectopic teeth located in a cyst in the maxillary sinuses. [Cukurova Med J 2016; 41(0.100: 98-99

  19. Giant cell tumor of the frontal sinus: case report

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    Matushita, Joao Paulo, E-mail: jpauloejulieta@gmail.com [Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG (Brazil). Hospital das Clinicas; Matushita, Julieta S.; Matushita Junior, Joao Paulo Kawaoka [Centro de Diagnostico por Imagem Dr. Matsushita, Belo Horizonte, MG (Brazil); Matushita, Cristina S. [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Hospital Universitario Clementino Fraga Filho; Simoes, Luiz Antonio Monteiro; Carvalho Neto, Lizando Franco de

    2013-06-15

    The authors report the case of a giant cell tumor of the frontal sinus in a 54-year-old male patient. This tumor location is rare, and this is the third case reported in the literature with radiographic documentation and histopathological confirmation. The patient underwent surgery, with curettage of frontal sinus and placement of a prosthesis. He died because a voluntary abrupt discontinuation of corticosteroids. (author)

  20. Extramedullary plasmacytoma extensively affecting the sella turcica and paranasal sinuses.

    Science.gov (United States)

    Oishi, T; Kasai, H; Sakurai, Y; Kawamoto, K

    2006-01-01

    We report a 62-year-old Japanese male who complained of double vision and showed clear boundary mass extending to the clivus, intrasella, suprasella, ethmoidal sinus and sphenoid sinus on neuroimaging. The tumor mass was partially resected via transsphenoidal approach and was diagnosed as the extramedullary plasmacytoma by IgA immunostaining and electron microscopy. Making diagnosis from the imaging findings was difficult in this rare case, but immunohistological and electron microscopic examinations were useful for pathological diagnosis.

  1. [Cellular and tissue reactions of the mucous membrane of the maxillary sinus in the patients presenting with odontogenic aspergillous maxillary sinusitis].

    Science.gov (United States)

    Baĭdik, O D; Sysoliatin, P G; Logvinov, S V

    2012-01-01

    The results of this morphological study of the mucous membrane of the maxillary sinuses in the patients presenting with the non-invasive fungal form of odontogenic sinusitis revealed the signs of granulematous inflammation. Epithelium underwent metaplasia into the single-row cubic or prismatic layer. The invasive form of fungal odontogenic sinusitis was characterized by allergic inflammation with intensive infiltration of maxillary sinus mucosa by antigen-representing and effector cells.

  2. Relationship between lymph node sinuses with blood and lymphatic metastasis of gastric cancer

    Institute of Scientific and Technical Information of China (English)

    Tong Yin; Xiao-Long Ji; Min-Shi Shen

    2003-01-01

    AIM: To elucidate the relationship between lymph nodesinuses with blood and lymphatic metastasis of gastric cancer.METHODS: Routine autopsy was carried out in the randomlyselected 102 patients (among them 100 patients died ofvarious diseases, and 2 patients died of non-diseasedreasons), their superficial lymph nodes locating in bilateralnecks (include supraclavicle), axilla, inguina, thorax, andabdomen were sampled. Haematoxylin-Eosin staining wasperformed on 10 % formalin-fixed and paraffin-embeddedlymph node tissue sections (Sum). The histological pattemsof the lymph sinuses containing blood were observed underlight microscope. The expression of CD31, a marker forendothelial cell, was detected both in blood and non-bloodcontaining lymph node sinuses with the method ofimmunohistochemistry.RESULTS: Among the 1322 lymph nodes sampled fromthe autopsies of 100 diseased cases, lymph node sinusescontaining blood were found in 809 lymph nodes sampledfrom 91 cases, but couldn't be seen in the lymph nodessampled from the non-diseased cases. According to histology,we divided the blood containing lymph node sinuses intofive categories: vascular-opening sinus, blood-deficient sinus,erythrophago-sinus, blood-abundant sinus, vascular-formative sinus. Immunohistochemical findings showed thatthe expression of CD31 was strongly positive in vascular-formative sinuses and some vascular-opening sinuses whileit was faint in blood-deficient sinuses, erythrophago-sinusesand some vascular-opening sinuses. It was almost negativein blood-abundant sinus and non-blood containing sinus.CONCLUSION: In the state of disease, the phenomenonof blood present in the lymph sinus is not uncommon. Bloodcould possibly enter into the lymph sinuses through thelymphaticovenous communications between the veins andthe sinuses in the node. Lymph circulation and the bloodcirculation could communicate with each other in the lymphnode sinuses. The skipping and distal lymphatic metastasisof gastric cancer may

  3. Cardiac Iodine-123-Meta-Iodo-Benzylguanidine Uptake in Carotid Sinus Hypersensitivity.

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    Maw Pin Tan

    Full Text Available Carotid sinus syndrome is the association of carotid sinus hypersensitivity with syncope, unexplained falls and drop attacks in generally older people. We evaluated cardiac sympathetic innervation in this disorder in individuals with carotid sinus syndrome, asymptomatic carotid sinus hypersensitivity and controls without carotid sinus hypersensitivity.Consecutive patients diagnosed with carotid sinus syndrome at a specialist falls and syncope unit were recruited. Asymptomatic carotid sinus hypersensitivity and non-carotid sinus hypersensitivity control participants recruited from a community-dwelling cohort. Cardiac sympathetic innervation was determined using Iodine-123-metaiodobenzylguanidine (123-I-MIBG scanning. Heart to mediastinal uptake ratio (H:M were determined for early and late uptake on planar scintigraphy at 20 minutes and 3 hours following intravenous injection of 123-I-MIBG.Forty-two subjects: carotid sinus syndrome (n = 21, asymptomatic carotid sinus hypersensitivity (n = 12 and no carotid sinus hypersensitivity (n = 9 were included. Compared to the non- carotid sinus hypersensitivity control group, the carotid sinus syndrome group had significantly higher early H:M (estimated mean difference, B = 0.40; 95% confidence interval, CI = 0.13 to 0.67, p = 0.005 and late H:M (B = 0.32; 95%CI = 0.03 to 0.62, p = 0.032. There was, however, no significant difference in early H:M (p = 0.326 or late H:M (p = 0.351 between the asymptomatic carotid sinus hypersensitivity group and non- carotid sinus hypersensitivity controls.Cardiac sympathetic neuronal activity is increased relative to age-matched controls in individuals with carotid sinus syndrome but not those with asymptomatic carotid sinus hypersensitivity. Blood pressure and heart rate measurements alone may therefore represent an over simplification in the assessment for carotid sinus syndrome and the relative increase in cardiac sympathetic innervation provides additional clues to

  4. Frontal Sinus Patency after Extended Frontal Sinusotomy Type III

    Science.gov (United States)

    Hajbeygi, Mansour; Nadjafi, Ali; Amali, Amin; Saedi, Babak; Sadrehosseini, Seyed Mousa

    2016-01-01

    Introduction: The surgical management of chronic frontal sinus disorders remains a challenge for rhinologists. The aim of this study was to evaluate the result of Draf III in a series of patients who underwent this procedure. Materials and Methods: Twenty patients were included in this study. Demographic data, history of prior surgery, asthma, aspirin sensitivity and Lund–Mackay score were recorded. A visual analog scale was used for frontal-related symptoms. Patients were followed for a mean duration of 17.5 months and the patency of the frontal sinus ostium was closely monitored. Results: Fifteen patients with chronic frontal sinusitis, two patients with mucoceles, two with malignancy, and one with osteoma underwent Draf III. The mean symptoms score significantly decreased from 5.9 to 3. No ostial closure was seen in the follow-up period. Among 15 patients with chronic frontal sinusitis, 12 had patent ostia of whom three had significant stenosis. All patients with mucocele and osteoma had patent ostia in the follow-up period but patients with sinonasal malignancy showed significant stenosis. Conclusion: Draf III frontal sinusotomy is successful in alleviating patient symptoms and the frontal sinus neo-ostium will remain patent in long-term follow-up of most patients. Revision surgery will be required in some cases, which seems to be related to the nature of the underlying chronic sinus diseases. PMID:27738610

  5. Microsurgical Treatment of Meningiomas Invading the Sagittal or Transverse Sinuses

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    OBJECTIVE To analyze our management strategy and results of treating patients affected by meningiomas invading the sagittalor transverse sinuses.METHODS Review of data from 35 patients with pathologically confirmed meningiomas(29 of the sagittal sinus and 6 of the transverse sinus)surgically treated between from July 1999 and June 2003, including clinical manifestations, mode of diagnosis and curative effect of microsurgery etc.For our surgical decision-making, meningiomas were classified into six types based on the degree of sinus involvement.RESULTS A Simpson's Grade I resection was achieved in 27 cases (77.1%), Grade Ⅱ in 6 (17.1%) and Grade Ⅲ in 2 (5.7%). No patients died after the operations. The recurrence rate in the study overall was 2.9%, with a follow-up period from 3 to 6 years.CONCLUSION Application of microsurgical techniques, protection of the sinus, avoidance of damages to the cerebral cortex, veins of the central sulcus, as well as other veins from the tumor, are the major factors for increasing the rate of total resection, reducing complications and improving the quality of life for the patients with meningiomas invading the sagittal or transverse sinuses.

  6. A case of membranous nephropathy associated with chronic sinusitis.

    Science.gov (United States)

    Kanazawa, Ippei; Yano, Shozo; Takase, Hirofumi; Yamane, Yuko; Yamaguchi, Toru; Sugimoto, Toshitsugu

    2009-01-01

    Here we report a case of a 71-year-old Japanese woman with membranous nephropathy complicated with chronic sinusitis. The patient visited our hospital for treatment of edema and proteinuria, and was diagnosed as nephrotic syndrome with serum total protein 7.5 g/dL, albumin 2.2 g/dL and urine protein 3.7 g/day. Renal biopsy revealed membranous glomerulonephritis with tubulointerstitial nephritis. She had suffered from chronic sinusitis for several years. Laboratory tests showed that immunoglobulin G (IgG) and soluble interleukin-2 receptor (sIL-2R) were markedly increased (3,233 mg/dL and 5,110 U/mL, respectively) and Gallium scintigraphy showed abnormal accumulation to the paranasal sinus. After operation for chronic sinusitis, the levels of IgG and sIL-2R were decreased, and nephrotic syndrome was improved without any other specific treatments. It is known that various diseases, including membranous nephropathy and sinusitis, are caused by T-cell dysfunction. Thus, we suspect the pathogenetic link between membranous nephropathy and chronic sinusitis in this case, most probably through T-cell dysfunction.

  7. CT-based manual segmentation and evaluation of paranasal sinuses.

    Science.gov (United States)

    Pirner, S; Tingelhoff, K; Wagner, I; Westphal, R; Rilk, M; Wahl, F M; Bootz, F; Eichhorn, Klaus W G

    2009-04-01

    Manual segmentation of computed tomography (CT) datasets was performed for robot-assisted endoscope movement during functional endoscopic sinus surgery (FESS). Segmented 3D models are needed for the robots' workspace definition. A total of 50 preselected CT datasets were each segmented in 150-200 coronal slices with 24 landmarks being set. Three different colors for segmentation represent diverse risk areas. Extension and volumetric measurements were performed. Three-dimensional reconstruction was generated after segmentation. Manual segmentation took 8-10 h for each CT dataset. The mean volumes were: right maxillary sinus 17.4 cm(3), left side 17.9 cm(3), right frontal sinus 4.2 cm(3), left side 4.0 cm(3), total frontal sinuses 7.9 cm(3), sphenoid sinus right side 5.3 cm(3), left side 5.5 cm(3), total sphenoid sinus volume 11.2 cm(3). Our manually segmented 3D-models present the patient's individual anatomy with a special focus on structures in danger according to the diverse colored risk areas. For safe robot assistance, the high-accuracy models represent an average of the population for anatomical variations, extension and volumetric measurements. They can be used as a database for automatic model-based segmentation. None of the segmentation methods so far described provide risk segmentation. The robot's maximum distance to the segmented border can be adjusted according to the differently colored areas.

  8. Ectopic Molar with Maxillary Sinus Drainage Obstruction and Oroantral Fistula

    Directory of Open Access Journals (Sweden)

    Shahin Abdollahifakhim

    2013-06-01

    Full Text Available Introduction: Ectopic tooth eruption may result owing to one of 3 processes: developmentalDisturbance, iatrogenic activity, or pathologic process, such as a tumor or a cyst. In rare cases, occlusion of the sinus ostia may predispose a patient to develop a maxillary sinus mucocele. When the maxillary sinus is invaded, symptoms usually occur late in the process.   Case report: A 17 years old boy referred to department of Otolaryngology, Head and Neck Surgery of university of medical sciences, Tabriz_Iran in 2010 with chronic recurrent mucoprulent discharge from retromollar trigone , posterior to right superior alveolar ridge. CT scan revealed a dense mass resembling tooth, obstructing sinus ostium with homogenous opacity with ring enhancement, occupying whole sinus and expanding all walls. A Caldwell Luke approach in combination with endoscopy was selected.   Discussions: In the present patient, removal of ectopic tooth resolved the symptoms completely, the fistula obstructed and discharges discontinued. An ectopic tooth is a rare entity obstructing sinus ostium. The etiology of ectopic eruption has not yet been completely clarified, but many theories have been suggested,including trauma, infection, developmental anomalies and pathologic conditions, such as dentigerous cysts. In summary, although the ectopic teeth is rare but it would be assumed in presence of unilateral symptoms of sinonasal cavity. Therefore in peristant unilateral sinonasal symptoms we should complete examining of this site to rule out rare causes of these symptoms.

  9. Uncontrolled seizures resulting from cerebral venous sinus thrombosis complicating neurobrucellosis

    Directory of Open Access Journals (Sweden)

    Fardin Faraji

    2013-01-01

    Full Text Available Cerebral venous sinus thrombosis is a rare form of stroke caused by thrombosis in venous sinuses of the brain. In this study, we reported on a patient with venous sinus thrombosis and brucellosis who presented with uncontrolled seizure despite being treated with anti-epileptic drugs at high doses. The case was a 33-year-old woman with a history of controlled complex partial seizure who presented with headache, asthenia, and uncontrolled seizure for one month. She was febrile and a brain CT scan indicated hemorrhagic focus in the left posterior parietal and the temporal lobe. Magnetic resonance imaging and magnetic resonance venography also proved venous sinus thrombosis in the left transverse sinus. Besides [In addition], a laboratory assessment confirmed brucellosis. Following the treatment with anti-coagulant, anti-brucellosis, and anti-epileptic agents, the patient was discharged in good condition with medical orders. Clinical suspicion and accurate evaluation of a patient′s history is the most important clue in diagnosis and treatment of brucellosis and cerebral venous sinus thrombosis, especially in uncontrolled seizure in patients who had previously been under control.

  10. Unusual Case of Sinusitis Related to Ectopic Teeth in the Maxillary Sinus Roof/Orbital Floor: A Report.

    Science.gov (United States)

    Chagas Júnior, Otacílio Luiz; Moura, Lucas Borin; Sonego, Camila Leal; de Farias, Eduardo Oliveira Campos; Giongo, Caroline Comis; Fonseca, Alisson André Robe

    2016-09-01

    This article presents a case report of an adult patient with chronic sinusitis related to the presence of two erupted ectopic teeth located atypically in the maxillary sinus roof/orbital floor after a long latency period associated with childhood facial trauma. This article aims to show the treatment of chronic sinusitis of odontogenic origin by surgical removal of ectopic teeth in an unusual position by direct visualization. This case report discusses the signs and symptoms of chronic sinusitis linked to the presence of ectopic elements and associated with an inflammatory cyst, the choice of complementary tests for diagnosis and surgical treatment through the Caldwell-Luc procedure. After a 2-year follow-up period, the patient presently shows clinical improvement, thus demonstrating the success of the chosen treatment.

  11. Propofol and arrhythmias: two sides of the coin

    Institute of Scientific and Technical Information of China (English)

    Qiang LIU; Ai-ling KONG; Rong CHEN; Cheng QIAN; Shao-wen LIU; Bao-gui SUN; Le-xin WANG; Long-sheng SONG; Jiang HONG

    2011-01-01

    The hypnotic agent propofol is effective for the induction and maintenance of anesthesia. However, recent studies have shown that propofol administration is related to arrhythmias. Propofol displays both pro- and anti-arrhythmic effects in a concentration-dependent manner. Data indicate that propofol can convert supraventricular tachycardia and ventricular tachycardia and may inhibit the conduction system of the heart. The mechanism of the cardiac effects remains poorly defined and may involve ion channels, the autonomic nervous system and cardiac gap junctions. Specifically, sodium, calcium and potassium currents in cardiac cells are suppressed by clinically relevant concentrations of propofol. Propofol shortens the action potential duration (APD) but lessens the ischemia-induced decrease in the APD. Furthermore, propofol suppresses both sympathetic and parasympathetic tone and preserves gap junctions during ischemia. All of these effects cumulatively contribute to the antiarrhythmic and proarrhythmic properties of propofol.

  12. Disruption of cardiac cholinergic neurons enhances susceptibility to ventricular arrhythmias

    Science.gov (United States)

    Jungen, Christiane; Scherschel, Katharina; Eickholt, Christian; Kuklik, Pawel; Klatt, Niklas; Bork, Nadja; Salzbrunn, Tim; Alken, Fares; Angendohr, Stephan; Klene, Christiane; Mester, Janos; Klöcker, Nikolaj; Veldkamp, Marieke W.; Schumacher, Udo; Willems, Stephan; Nikolaev, Viacheslav O.; Meyer, Christian

    2017-01-01

    The parasympathetic nervous system plays an important role in the pathophysiology of atrial fibrillation. Catheter ablation, a minimally invasive procedure deactivating abnormal firing cardiac tissue, is increasingly becoming the therapy of choice for atrial fibrillation. This is inevitably associated with the obliteration of cardiac cholinergic neurons. However, the impact on ventricular electrophysiology is unclear. Here we show that cardiac cholinergic neurons modulate ventricular electrophysiology. Mechanical disruption or pharmacological blockade of parasympathetic innervation shortens ventricular refractory periods, increases the incidence of ventricular arrhythmia and decreases ventricular cAMP levels in murine hearts. Immunohistochemistry confirmed ventricular cholinergic innervation, revealing parasympathetic fibres running from the atria to the ventricles parallel to sympathetic fibres. In humans, catheter ablation of atrial fibrillation, which is accompanied by accidental parasympathetic and concomitant sympathetic denervation, raises the burden of premature ventricular complexes. In summary, our results demonstrate an influence of cardiac cholinergic neurons on the regulation of ventricular function and arrhythmogenesis. PMID:28128201

  13. Anatomical Consideration in Catheter Ablation of Idiopathic Ventricular Arrhythmias.

    Science.gov (United States)

    Yamada, Takumi; Kay, G Neal

    2016-01-01

    Idiopathic ventricular arrhythmias (VAs) are ventricular tachycardias (VTs) or premature ventricular contractions (PVCs) with a mechanism that is not related to myocardial scar. The sites of successful catheter ablation of idiopathic VA origins have been progressively elucidated and include both the endocardium and, less commonly, the epicardium. Idiopathic VAs usually originate from specific anatomical structures such as the ventricular outflow tracts, aortic root, atrioventricular (AV) annuli, papillary muscles, Purkinje network and so on, and exhibit characteristic electrocardiograms based on their anatomical background. Catheter ablation of idiopathic VAs is usually safe and highly successful, but can sometimes be challenging because of the anatomical obstacles such as the coronary arteries, epicardial fat pads, intramural and epicardial origins, AV conduction system and so on. Therefore, understanding the relevant anatomy is important to achieve a safe and successful catheter ablation of idiopathic VAs. This review describes the anatomical consideration in the catheter ablation of idiopathic VAs.

  14. Serious arrhythmias in patients with apical hypertrophic cardiomyopathy

    Energy Technology Data Exchange (ETDEWEB)

    Okishige, Kaoru; Sasano, Tetsuo; Yano, Kei; Azegami, Kouji; Suzuki, Kou; Itoh, Kuniyasu [Yokohama Red Cross Hospital (Japan)

    2001-05-01

    We report cases of serious arrhythmias associated with apical hypertrophic cardiomyopathy (AHCM). Thirty-one patients were referred to our institute to undergo further assessment of their AHCM from 1988 to 1999. Three patients with nonsustained ventricular tachycardia demonstrated an {sup 123}I-MIBG regional reduction in the tracer uptake. In two patients with ventricular fibrillation (VF), the findings from {sup 123}I-MIBG imaging revealed regional sympathetic denervation in the inferior and lateral regions. Electrophysiologic study demonstrated reproducible induction of VF in aborted sudden death and presyncopal patients, resulting in the need for an implantable defibrillator device and amiodarone in each patient. Patients with refractory atrial fibrillation with a rapid ventricular response suffered from serious congestive heart failure. A prudent assessment and strategy in patients with this disease would be indispensable in avoiding a disastrous outcome. (author)

  15. Occlusion of the pig superior sagittal sinus, bridging and cortical veins: multistep evolution of sinus-vein thrombosis.

    Science.gov (United States)

    Fries, G; Wallenfang, T; Hennen, J; Velthaus, M; Heimann, A; Schild, H; Perneczky, A; Kempski, O

    1992-07-01

    Cerebral sinus-vein thrombosis may lead to severe hemodynamic changes, elevated intracranial pressure (ICP), and brain edema. It is supposed that progression of the thrombus from the sinus into bridging and cortical veins plays a key role in the development of these pathophysiological changes, but this hypothesis lacks experimental proof. The aim of this study, using a novel animal model of sinus-vein thrombosis, was to evaluate the effects of a standardized occlusion of the superior sagittal sinus and its bridging and cortical veins on hemodynamic alterations, on brain water content, and on ICP in domestic pigs. In 10 animals, the middle third of the superior sagittal sinus was occluded with a catheter-guided balloon. Five of these pigs received an additional injection of 1 ml fibrin glue into the superior sagittal sinus anterior to the inflated balloon, leading to an obstruction of bridging and cortical veins. In five control animals the balloon was inserted but not inflated. Five pigs underwent cerebral angiography. Four hours after occlusion, the brains were frozen in liquid nitrogen, and coronal slices were examined for Evans blue dye extravasation, regional water content, and histological changes. Occlusion of the superior sagittal sinus alone did not affect ICP or cerebral perfusion pressure (CPP). The additional injection of fibrin glue caused an obstruction of cortical and bridging veins as well as severe increases in mean (+/- standard deviation) ICP to 49.4 +/- 14.3 mm Hg, compared with 8.3 +/- 4.5 mm Hg in sham-treated controls and 7.1 +/- 3.9 mm Hg in animals with occlusion of the superior sagittal sinus alone. There was also a steep fall in the mean CPP to 34.2 +/- 19.6 mm Hg compared with 96.4 +/- 13.8 mm Hg in the control group. White-matter water content anterior to the occlusion site was elevated to 81.9 +/- 3.7 gm/100 gm frozen weight in the fibrin group as compared to 70.7 +/- 2.2 gm/100 gm in controls. Posterior to the occlusion site, water

  16. A Possible Association of Staphylococcus Enterotoxin B-induced Asthma and Sinusitis

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    In order to gain insight into a possible association between chronic sinusitis and asthma,85 patients with sinusitis and asthma underwent functional endoscopic sinus surgical treatment and serum antibodies and cytokines were measured. The results showed that 51 out of 85 patients with high serum anti-Staphylococcus enterotoxin B (SEB) antibody before treatment obtained satisfactory results for both sinusitis and asthma. The high level of Th2 cytokine IL-4 was down regulated tothe levels of normal controls after sinus surgery. Thirty-four out of 85 patients did not show high serum anti-SEB antibody before sinus surgery and did not show much improvement in their asthmatic symptoms although sinusitis symptoms were resolved by sinus surgery. It was concluded that bacterial superantigen SEB (in the sinuses) might play a crucial role in the pathogenesis of lower airway hypersensitivity.

  17. Digitalis and the sick sinus syndrome. Clinical and electrophysiologic documentation of severe toxic effect on sinus node function.

    Science.gov (United States)

    Margolis, J R; Strauss, H C; Miller, H C; Gilbert, M; Wallace, A G

    1975-07-01

    Digoxin, in a common clinical dose and at a low serum level, brought out severe manifestations of sinus node dysfunction in a patient who had previously undergone successful mitral valve replacement. This report presents the results of extensive clinical and electrophysiologic studies of this patient before and after a digoxin challenge. In the absence of cardiac glycoside, the only demonstrable abnormalities of sinus node function were mild resting sinus bradycardia and failure to respond to atropine administration. Responses to isoproterenol administration, programmed premature atrial stimulation, and overdrive pacing at several cycle lengths were normal. Following the administration of intravenous digoxin, 1.025 mg/24 hrs, the resting sinus cycle length increased and the response to overdrive pacing became markedly abnormal. The latter was followed by sinus pauses in excess of six seconds, even at relatively slow overdrive pacing rates. The electrophysiologic and clinical implications of these data are discussed. It is suggested that despite previous reports that digitalis preparations are relatively well tolerated by patients with sick sinus syndrome, caution should be used when administering these drugs to this group of patients.

  18. Historical and clinical features of 200 cases of equine sinus disease.

    Science.gov (United States)

    Dixon, P M; Parkin, T D; Collins, N; Hawkes, C; Townsend, N B; Fisher, G; Ealey, R; Barakzai, S Z

    2011-10-22

    The historical and clinical findings in 200 referred cases of equine sinus disease were reviewed retrospectively. Univariable and multivariable analyses were performed to detect significant differences in historical or clinical features between various categories of sinus disease. The causes of sinus disease were classified as subacute primary (less than two months duration) (n=52), chronic primary (more than two months duration) (n=37), dental (n=40), sinus cyst (n=26), traumatic (n=13) or mycotic sinusitis (n=7), sinus neoplasia (n=10), dental-related oromaxillary fistula (n=8) and intrasinus progressive ethmoid haematoma (n=7). The majority of sinus disorders were of chronic duration at the time of referral and most (including 97 per cent of chronic primary sinusitis cases) had not responded to previous antibiotic therapy and/or sinus lavage in some cases. Clinical signs included unilateral nasal discharge in most cases, including purulent or mucopurulent discharge in all horses with primary, dental and mycotic sinusitis. Haemorrhagic nasal discharge was a feature of traumatic sinusitis and intrasinus progressive ethmoid haematomas. Firm facial swellings and nasal airflow obstruction were features of sinus cysts and neoplasms. Ipsilateral lymphadenitis was a more prominent feature of sinus disease with active infections such as primary, dental or mycotic sinusitis.

  19. Review of experimental models: sinusitis in rabbits

    Directory of Open Access Journals (Sweden)

    André Coura Perez

    2014-10-01

    Full Text Available INTRODUCTION: In order to better understand the pathophysiology of rhinosinusitis, several attempts have been made to create the disease in an animal model. Among the studied rodents each has its advantages and disadvantages. Rabbits are considered more appropriate for studies that require surgical manipulation or invasive procedures. OBJECTIVES: To evaluate the most viable experimental model of rhinosinusitis in rabbits to be adopted in future studies. METHODS: An electronic search for studies with experimental models of rhinosinusitis in rabbits published in English and Portuguese between July of 1967 and January of 2013 was conducted in Medline, Pub Med, Cochrane, and CAPES databases, using the keywords "sinusitis", "rabbits", and "polyps". RESULTS: A total of 256 studies were retrieved, but in accordance with the inclusion and exclusion criteria, only ten studies were selected. Many different methods of response assessment were used in these studies. CONCLUSION: To date, there is no ideal experimental model for induction of acute or chronic rhinosinusitis in rabbits, but the rhinogenic model appears to be the most viable option for the continuity of studies of the disease.

  20. Myocardial perfusion/metabolism mismatch and ventricular arrhythmias in the chronic post infarction state

    Energy Technology Data Exchange (ETDEWEB)

    Krause, B.J.; Poeppel, T.D.; Vosberg, H.; Mueller, H.W. [Dept. of Nuclear Medicine, Heinrich Heine Univ., Duesseldorf (Germany); Reinhardt, M. [Praxis fuer Radiologie und Nuklearmedizin, Dorsten (Germany); Vester, E.G. [Dept. of Cardiology, Evangelisches Krankenhaus, Duesseldorf (Germany); Yong, M.; Mau, J. [Dept. of Statistics in Medicine, Heinrich Heine Univ., Duesseldorf (Germany); Strauer, B.E. [Dept. of Medicine, Div. of Cardiology, Angiology and Pulmonary Disease, Heinrich Heine Univ., Duesseldorf (Germany)

    2005-07-01

    Aim: Ventricular arrhythmias have been shown to originate in the myocardial peri-infarct region due to irregular heterotopic conduction. Hypoperfused but viable myocardium is often localised in those areas and may be involved in the pathogenesis of arrhythmias. We tested the hypothesis that these myocardial perfusion/metabolism mismatches (MM) are significantly associated with ventricular arrhythmias in the chronic post infarction state. Patients, methods: 47 post infarction patients were included in the study. 33 suffered from ventricular arrhythmia whereas 14 did not. All patients underwent {sup 99m}Tc tetrofosmin SPECT and {sup 18}F-FDG PET. A region-of-interest(ROI)-analysis was used to assess viable myocardium based on predefined MM-criteria. Univariate analyses as well as a logistic regression model for the multivariate analysis were carried out. Results: 94% of the arrhythmic patients displayed at least one MM-segment as compared to 64% of the non-arrhythmic patients. MM-segments and arrhythmia showed a statistically significant relation (p=0.018). The logistic regression model predicted the occurrence or absence of arrhythmia in 85% of all cases. Multivariate analysis gave consistent results, after adjusting for symptomatic chronic heart failure (CHF), aneurysms and age. Conclusion: Our results support the hypothesis that hypoperfused but viable myocardium represents an arrhyhmogenic substrate and is a relevant risk factor for developing ventricular arrhythmias following myocardial infarction. Therefore, the detection of MM-segments allows the identification of patients with a higher risk for future cardiac events. (orig.)

  1. The occurrence of new arrhythmias after catheter-ablation of accessory pathway: Delayed arrhythmic side-effect of curative radiofrequency lesion?

    Directory of Open Access Journals (Sweden)

    Mujović Nebojša

    2011-01-01

    Full Text Available Introduction. New arrhythmias (NA may appear late after accessory pathway (AP ablation, but their relation to curative radiofrequency (RF lesion is unknown. Objective. The aim of this study was to determine the prevalence and predictors for NA occurrence after AP ablation and to investigate pro-arrhythmic effect of RF. Methods. Total of 124 patients (88 males, mean age 43±14 years with Wolff-Parkinson-White syndrome and single AP have been followed after successful RF ablation. Post-ablation finding of arrhythmia, not recorded before the procedure, was considered a NA. The origin of NA was assessed by analysis of P-wave and/or QRS-complex morphology, and, thereafter, it was compared with locations of previously ablated APs. Results. Over the follow-up of 4.3±3.9 years, NA was registered in 20 patients (16%. The prevalence of specific NAs was as follows: atrioventricular (AV block 0.8%, atrial premature beats 1.6%, atrial fibrillation 5.4%, atrial flutter 0.8%, sinus tachycardia 4.8%, ventricular premature beats (VPBs 7.3%. Multivariate Cox-regression analysis identified (1 pre-ablation history of pathway-mediated tachyarrhythmias >10 years (HR=3.54, p=0.016 and (2 septal AP location (HR=4.25, p=0.003, as the independent predictors for NA occurrence. In four NA cases (two cases of septal VPBs, one of typical AFL and one of AV-block presumed NA origin was identified in the vicinity of previous ablation target. Conclusion. NAs were found in 16% of patients after AP elimination. In few of these cases, late on-site arrhythmic effect of initially curative RF lesion might be possible. While earlier intervention could prevent NA occurrence, closer follow-up is advised after ablation of septal AP.

  2. Exome Sequencing Identifies a Novel LMNA Splice-Site Mutation and Multigenic Heterozygosity of Potential Modifiers in a Family with Sick Sinus Syndrome, Dilated Cardiomyopathy, and Sudden Cardiac Death.

    Science.gov (United States)

    Zaragoza, Michael V; Fung, Lianna; Jensen, Ember; Oh, Frances; Cung, Katherine; McCarthy, Linda A; Tran, Christine K; Hoang, Van; Hakim, Simin A; Grosberg, Anna

    2016-01-01

    The goals are to understand the primary genetic mechanisms that cause Sick Sinus Syndrome and to identify potential modifiers that may result in intrafamilial variability within a multigenerational family. The proband is a 63-year-old male with a family history of individuals (>10) with sinus node dysfunction, ventricular arrhythmia, cardiomyopathy, heart failure, and sudden death. We used exome sequencing of a single individual to identify a novel LMNA mutation and demonstrated the importance of Sanger validation and family studies when evaluating candidates. After initial single-gene studies were negative, we conducted exome sequencing for the proband which produced 9 gigabases of sequencing data. Bioinformatics analysis showed 94% of the reads mapped to the reference and identified 128,563 unique variants with 108,795 (85%) located in 16,319 genes of 19,056 target genes. We discovered multiple variants in known arrhythmia, cardiomyopathy, or ion channel associated genes that may serve as potential modifiers in disease expression. To identify candidate mutations, we focused on ~2,000 variants located in 237 genes of 283 known arrhythmia, cardiomyopathy, or ion channel associated genes. We filtered the candidates to 41 variants in 33 genes using zygosity, protein impact, database searches, and clinical association. Only 21 of 41 (51%) variants were validated by Sanger sequencing. We selected nine confirmed variants with minor allele frequencies G, a novel heterozygous splice-site mutation as the primary mutation with rare or novel variants in HCN4, MYBPC3, PKP4, TMPO, TTN, DMPK and KCNJ10 as potential modifiers and a mechanism consistent with haploinsufficiency.

  3. Exome Sequencing Identifies a Novel LMNA Splice-Site Mutation and Multigenic Heterozygosity of Potential Modifiers in a Family with Sick Sinus Syndrome, Dilated Cardiomyopathy, and Sudden Cardiac Death.

    Directory of Open Access Journals (Sweden)

    Michael V Zaragoza

    Full Text Available The goals are to understand the primary genetic mechanisms that cause Sick Sinus Syndrome and to identify potential modifiers that may result in intrafamilial variability within a multigenerational family. The proband is a 63-year-old male with a family history of individuals (>10 with sinus node dysfunction, ventricular arrhythmia, cardiomyopathy, heart failure, and sudden death. We used exome sequencing of a single individual to identify a novel LMNA mutation and demonstrated the importance of Sanger validation and family studies when evaluating candidates. After initial single-gene studies were negative, we conducted exome sequencing for the proband which produced 9 gigabases of sequencing data. Bioinformatics analysis showed 94% of the reads mapped to the reference and identified 128,563 unique variants with 108,795 (85% located in 16,319 genes of 19,056 target genes. We discovered multiple variants in known arrhythmia, cardiomyopathy, or ion channel associated genes that may serve as potential modifiers in disease expression. To identify candidate mutations, we focused on ~2,000 variants located in 237 genes of 283 known arrhythmia, cardiomyopathy, or ion channel associated genes. We filtered the candidates to 41 variants in 33 genes using zygosity, protein impact, database searches, and clinical association. Only 21 of 41 (51% variants were validated by Sanger sequencing. We selected nine confirmed variants with minor allele frequencies G, a novel heterozygous splice-site mutation as the primary mutation with rare or novel variants in HCN4, MYBPC3, PKP4, TMPO, TTN, DMPK and KCNJ10 as potential modifiers and a mechanism consistent with haploinsufficiency.

  4. Proposition of novel classification approach and features for improved real-time arrhythmia monitoring.

    Science.gov (United States)

    Kim, Yoon Jae; Heo, Jeong; Park, Kwang Suk; Kim, Sungwan

    2016-08-01

    Arrhythmia refers to a group of conditions in which the heartbeat is irregular, fast, or slow due to abnormal electrical activity in the heart. Some types of arrhythmia such as ventricular fibrillation may result in cardiac arrest or death. Thus, arrhythmia detection becomes an important issue, and various studies have been conducted. Additionally, an arrhythmia detection algorithm for portable devices such as mobile phones has recently been developed because of increasing interest in e-health care. This paper proposes a novel classification approach and features, which are validated for improved real-time arrhythmia monitoring. The classification approach that was employed for arrhythmia detection is based on the concept of ensemble learning and the Taguchi method and has the advantage of being accurate and computationally efficient. The electrocardiography (ECG) data for arrhythmia detection was obtained from the MIT-BIH Arrhythmia Database (n=48). A novel feature, namely the heart rate variability calculated from 5s segments of ECG, which was not considered previously, was used. The novel classification approach and feature demonstrated arrhythmia detection accuracy of 89.13%. When the same data was classified using the conventional support vector machine (SVM), the obtained accuracy was 91.69%, 88.14%, and 88.74% for Gaussian, linear, and polynomial kernels, respectively. In terms of computation time, the proposed classifier was 5821.7 times faster than conventional SVM. In conclusion, the proposed classifier and feature showed performance comparable to those of previous studies, while the computational complexity and update interval were highly reduced.

  5. [Modern clinical and radiological approach to diagnostics of odontogenic sinusitis].

    Science.gov (United States)

    Khomutova, E Yu; Ignat'ev, Yu T; Demyanchuk, A N; Demyanchuk, A B

    2015-01-01

    Inflammatory diseases of the maxillary sinuses affect up to 70% of the adult population. Odontogenic maxillary sinusitis represents 13-86% of the inflammatory processes of maxillofacial area, with the incidence range being explained rather by varying diagnosis criteria than the true incidence difference of odontogenic lesions. The aim of the study was to summarize the clinical and radiological characteristics of odontogenic sinusitis according to patients records in the Department of Maxillofacial Surgery of Omsk Clinical Hospital No11 and the oral surgery department of BUZ GKSP No1 in 2009-2014. A total of 948 records of patient (aged 17 to 68 years) with maxillary sinusitis were identified. X-ray examinations were performed by CT PISASSO TRIO ("KoYo", South Korea) and MSCT Brillians 6 and Brillians 64 ((Philips HealthCare), Netherlands). Images were obtained in axial projection with slice thickness of 0.2-0.6 mm with multiplanar reconstructions (MPR) in a variety of direct and oblique projections. Altogether 664 patients were diagnosed with foreign bodies in the maxillary sinuses (filling material in 569 cases, roots or root fragments? implants, rubber drains, fragments of endodontic instruments in 95 cases). In 284 persons odontogenic cysts were found. Almost every fifth case was complicated by mycotic infection. Analysis of the results showed that only a multidisciplinary approach including dentists, maxillofacial surgeons, otolaryngologists and radiologists, as well as dental volumetric tomography or multislice CT can ensure the correct clinical and radiological approaches to determine the tactics of treatment in patients with sinusitis, reduce the incidence of relapses and chronic inflammatory processes in the maxillary sinuses.

  6. The Level of Serum immunoglobulins in Children suffering from Sinusitis

    Directory of Open Access Journals (Sweden)

    Noorbakhsh, S

    2009-01-01

    Full Text Available Background and objectives: Paranasal sinuses are the common place for infectionin children and adults. Early and effective antibiotic treatment is necessary toreduce the infection period and mucosal injuries, and to prevent from theInvolvements of orbit or CNS. This article aims to clarify the Serumimmunoglobulins accompanying by Sinusitis in Children.Material and Methods: the Subjects of this Cross-Sectional study were 400patients with paranasal sinusitis confirmed by imaging techniques. The study wasconducted in infectious and ENT Clinics of Rasoul Akram hospital in 2003-2004.We measured the Levels of serum immoglobulins including IgG, IgM, IgA and IgEby standard radio-immunodiffusion test, and Compared with normal range of eachage group. The data was analyzed by SPSS software (11.5Results: The Subjects aged 4.42±2.62 are both male (70.7% and female (29.3%.Maxilla is the most Common Sinus involved. Thirty-eight of them (95% haveincreased IgG Level. Forty-four percent of children suffered from rhinosinusitishave been diagnosed with Immune-humoral disorders: the increase of IgE (N=9,Lack of IgA (N=3, decrease of Isolated IgG (N=2, decrease of both IgG and IgA(N=1 and Hyper IgM syndrome (N=3. There is Significant Correlation betweendifferent Immunoglobulins and duration of Sinusitis (P<0.05.Conclusion: The results of this study show that an increase of IgE is one of themost Common disorders in children suffering from Sinusitis and the incidence ofimmunity disorders is higher than the expected rate. Thus, we recommend theImmunologic assessment for Children Contracting with Sinusitis, esp. forprotracted one.Key words: Rhinosinusitis, Hypogamma Globulinemia, Resistant Rhinosinusitis,Serum Immunoglobulins

  7. Dimensions, septation, and pattern of pneumatization of the sphenoidal sinus.

    Science.gov (United States)

    Idowu, O E; Balogun, B O; Okoli, C A

    2009-11-01

    The endoscopic endonasal transsphenoidal approach (EEA) to treat sellar, parasellar, and suprasellar tumours continues to gain increased significance. Due to the close proximity of the sphenoid sinus to the carotid artery and the optic canal, it is very important for surgeons to know the anatomical features and variations of the sphenoid sinus as relevant to EEA. A prospective study of the sphenoid sinus morphology was carried out on the cranial tomographic (CT) scan images of 60 Nigerian adult patients. The CTs were reviewed regarding the different anatomical variations of the sphenoid sinus: dimensions, septation, and pattern of pneumatisation. There were 37 males and 23 females. The patients' ages ranged from 18 years to 85 years, with a mean of 47.2 years. There was a main single intersphenoid septum in most patients (95%). The insertion of the septum was usually to the right posteriorly (38%) and in the midline anterior (65%). Although there is usually a main septum, the septa present were multiple in 29 of the sinuses studied. There was no gender difference with respect to the attachment of the main sphenoid sinus septum. The sphenoid anterior, posterior, and transverse dimensions were not significantly dependent on age, but they were longer in males than in females. Sellar pneumatization was present in the majority of the patients (83%), with 4 patients having postsellar pneumatization (6.7%) and 3 patients having presellar pneumatization (5%). There were no cases with conchal pneumatization or lateral pneumatization of the greater wing of the sphenoid. The present study provides anatomical information about the sphenoid sinus dimensions morphology that is essential for avoiding complications in performing an endoscopic sphenoidotomy.

  8. Double hazards of ischemia and reperfusion arrhythmias in a patient with variant angina pectoris.

    Science.gov (United States)

    Xu, Mingzhu; Yang, Xiangjun

    2015-01-01

    Variant angina pectoris, also called Prinzmetal's angina, is a syndrome caused by vasospasms of the coronary arteries. It can lead to myocardial infarction, ventricular arrhythmias, atrioventricular block and even sudden cardiac death. We report the case of a 53 year-old male patient with recurrent episodes of chest pain and arrhythmias in the course of related variant angina pectoris. It is likely that the reperfusion following myocardial ischemia was responsible for the ventricular fibrillation while the ST-segment returned to the baseline. This case showed that potential lethal arrhythmias could arise due to variant angina pectoris. It also indicated that ventricular fibrillation could be self-terminated.

  9. Ventricular Arrhythmias in Apparently Normal Hearts: Who Needs an Implantable Cardiac Defibrillator?

    Science.gov (United States)

    Tan, Alex Y; Ellenbogen, Kenneth

    2016-09-01

    Idiopathic ventricular tachycardia is often considered a benign form of ventricular arrhythmia in patients without apparent structural heart disease. However, a subset of patients may develop malignant ventricular arrhythmias and present with syncope and sudden cardiac arrest. Survivors of cardiac arrest are candidates for implantable cardiac defibrillators (ICDs). The indications for ICDs in patients with less than a full-blown cardiac arrest presentation but with electrocardiographically high-risk ectopy features remain uncertain. This article addresses some of the uncertainties and pitfalls in ICD risk stratification in this patient group and explores potential mechanisms for malignant conversion of benign premature ventricular complexes to sustained arrhythmia.

  10. Non-invasive cardiac mapping in clinical practice: Application to the ablation of cardiac arrhythmias.

    Science.gov (United States)

    Dubois, Rémi; Shah, Ashok J; Hocini, Mélèze; Denis, Arnaud; Derval, Nicolas; Cochet, Hubert; Sacher, Frédéric; Bear, Laura; Duchateau, Josselin; Jais, Pierre; Haissaguerre, Michel

    2015-01-01

    Ten years ago, electrocardiographic imaging (ECGI) started to demonstrate its efficiency in clinical settings. The initial application to localize focal ventricular arrhythmias such as ventricular premature beats was probably the easiest to challenge and validates the concept. Our clinical experience in using this non-invasive mapping technique to identify the sources of electrical disorders and guide catheter ablation of atrial arrhythmias (premature atrial beat, atrial tachycardia, atrial fibrillation), ventricular arrhythmias (premature ventricular beats) and ventricular pre-excitation (Wolff-Parkinson-White syndrome) is described here.

  11. Influence of calcium preconditioning and streptomycin on ventricular dilation-induced arrhythmias in isolated rat hearts

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Objective To investigate the mechanism of ventricular dilation-induced arrhythmias by dilating isolated rat hearts. Methods Isolated rat hearts were perfused by Langerdorff method. After equilibration, 80 hearts were randomly divided into four groups as follows: (1) control group (n=20), (2) Ca2+ preconditioning (CPC) group (n=20), (3) streptomycin group (n=20), and (4) CPC + streptomycin group (n=20). A latex balloon which can be filled with fluid was anchored in the left ventricle through the left atrium and mitral valve. Epicardial ECG of the left ventricle, left ventricular pressure, coronary flow and heart rate were recorded before and during ventricular dilation by injecting fluid into the latex balloon. The rate and duration of ventricular dilation-induced arrhythmias were recorded. Results Under the same increase in ventricular end-diastolic pressure made by inflation of the balloon, the rate of arrhythmias was 100% and duration of arrhythmias was 2.56±0.46 s in the control group. Both the rates of premature ventricular beat (90 %) and ventricular tachycardia 70 % ) were high. Compared with the control group, the total rate (60 % ) of arrhythmias was lower, and duration (1.67±0.61 s ) of arrhythmias was shorter in the CPC group. Both the rates of premature ventricular beat (60%) and ventricular tachycardia (40%) were low comparatively. The rate of arrhythmias (45 %) was lower and duration ( 1.64±0.42 s)of arrhythmias was shorter, and the rates of premature ventricular beat (30 % ) or ventricular tachycardia (35 %) were lower in the streptomycin group than in the control one. The least ventricular dilation-induced arrhythmias occurred in the CPC + streptomycin group. The rate of arrhythmias (10%) was the lowest and duration (1.01±0.37s) of arrhythmias was the shortest; both the rates of premature ventricular beat (5%) and ventricular tachycardia (10%) were the lowest. Conclusions Ventricular dilation may induce arrhythmias in isolated rat hearts. Stretch

  12. Tachy-Brady Arrhythmias: The Critical Role of Adenosine-induced Sino-Atrial Conduction Block in Post-Tachycardia Pauses

    Science.gov (United States)

    Lou, Qing; Glukhov, Alexey V.; Hansen, Brian; Hage, Lori; Vargas-Pinto, Pedro; Billman, George E.; Carnes, Cynthia A.; Fedorov, Vadim V.

    2012-01-01

    Background In patients with sinoatrial nodal (SAN) dysfunction, atrial pauses lasting several seconds may follow rapid atrial pacing or paroxysmal tachycardia (tachy-brady arrhythmias). Clinical studies suggest that adenosine may play an important role in SAN dysfunction, but the mechanism remains unclear. Objective To define the mechanism of SAN dysfunction induced by the combination of adenosine and tachycardia. Methods We studied the mechanism of SAN dysfunction produced by a combination of adenosine and rapid atrial pacing in isolated coronary-perfused canine atrial preparations using high-resolution optical mapping (n=9). Sinus cycle length (SCL) and sinoatrial conduction time (SACT) were measured during adenosine (1–100μM) and 1μM DPCPX (A1 receptor antagonist, n=7) perfusion. Sinoatrial node recovery time was measured after one minute of “slow” pacing (3.3Hz) or tachypacing (7–9Hz). Results Adenosine significantly increased SCL (477±62 vs. 778±114 ms, p<0.01), and SACT during sinus rhythm (41±11 vs. 86±16 ms, p<0.01) dose-dependently. Adenosine dramatically affected SACT of the first SAN beat after tachypacing (41±5 vs. 221±98ms, p<0.01). Moreover, at high concentrations of adenosine (10–100μM), termination of tachypacing or atrial flutter/fibrillation produced atrial pauses of 4.2±3.4 seconds (n=5) due to conduction block between the SAN and atria, despite a stable SAN intrinsic rate. Conduction block was preferentially related to depressed excitability in SAN conduction pathways. Adenosine-induced changes were reversible upon washout or DPCPX treatment. Conclusions These data directly demonstrate that adenosine contributes to post-tachycardia atrial pauses through SAN exit block rather than slowed pacemaker automaticity. Thus, these data suggest an important modulatory role of adenosine in tachy-brady syndrome. PMID:22985657

  13. 分析妊娠期心律失常对妊娠结局的影响及治疗策略%Analysis of arrhythmia during pregnancy on pregnancy outcome and treatment strategies

    Institute of Scientific and Technical Information of China (English)

    冯莉; 张丽娟; 冯敏

    2014-01-01

    Objective To analyze and evaluate the cardiac arrhythmia during pregnancy on pregnancy outcome and treatment strategies.Methods In our hospital from 2013 February to 2014 year in February 100 cases of pregnancy arrhythmia patients as the research object, a retrospective analysis of clinical data of all patients, the pregnancy outcome and treatment analysis.Results In this group, 100 cases of patients with arrhythmia during pregnancy, sinus tachycardia, ventricular premature beat is a common arrhythmia, the incidence rates were 24% and 20%.Conclusion Pregnancy arrhythmia is common in clinical practice, combined with the actual situation of patients, psychological education and clinical treatment for pregnant women, to achieve satisfactory outcome of pregnancy, perinatal and maternal mortality, and has a very important clinical value.%目的:分析妊娠期心律失常对妊娠结局的影响及治疗策略。方法选取我院2013年2月~2014年2月收治的100例妊娠期心律失常患者作为研究对象,回顾性分析全部患者临床资料,对妊娠结局及治疗措施进行分析。结果本组100例妊娠期心律失常患者,窦性心动过速、室性早搏是常见的心律失常,发生率分别为24.00%和20.00%;妊娠合并器质性心脏病18例,胎儿死亡5例,孕妇死亡2例,妊娠合并无器质性心脏病82例,无胎儿(新生儿)和孕妇死亡。结论妊娠期心律失常在临床较为常见,结合患者实际情况,对孕妇进行心理教育与临床治疗,有利于实现令人满意的妊娠结局,降低围生儿与孕妇死亡率,具有十分重要的临床价值。

  14. Gallium scintigraphy in a case of septic cavernous sinus thrombosis

    Energy Technology Data Exchange (ETDEWEB)

    Palestro, C.J.; Malat, J.; Gladstone, A.G.; Richman, A.H.

    1986-09-01

    Septic cavernous sinus thrombosis, a relatively uncommon disease entity, frequently can be fatal. Early diagnosis is imperative in order that appropriate treatment be instituted. A 59-year-old woman who was admitted to our institution with complaints of diplopia, blurred vision and fevers that developed following a tooth extraction is presented. Initial CT and lumbar puncture on the day of admission were totally normal. A repeat CT performed 48 hours after admission, on the same day as gallium imaging, demonstrated findings consistent with cavernous sinus thrombosis. Gallium imaging demonstrated intense uptake in the left cavernous sinus and left orbit as well as moderately increased activity in the right cavernous sinus and orbit, confirming infection. The patient was treated with antibiotics, and repeat CT and gallium imaging were performed ten days later, both of which demonstrated near total resolution of the disease process. Conceivably, if gallium imaging had been initiated on the day of admission it may have been the first study to demonstrate an infectious process in the cavernous sinus. Gallium imaging should be considered as a diagnostic tool in the noninvasive workup of this entity.

  15. Ewing’s sarcoma of the maxillary sinus

    Directory of Open Access Journals (Sweden)

    Firas Nasser

    2015-07-01

    Full Text Available Ewing’s sarcoma is typically an aggressive, poorly differentiated tumor affecting children and young adults, it accounts for 4–6% of all primary bone tumors and facial primary localizations occur in only 1–4% of all cases, mostly in the mandible and calvaria. Paranasal sinus involvement is rare. A 22-year-old female was reviewed in Oral & Cranio Maxillofacial Surgery Department. She complained of swelling of the right paranasal area, of one-month duration, progressively increasing in size and associated with pain. The medical history was unremarkable, Contrast Enhanced Computed Tomography scan showed a destructive lesion of the anterior wall of the right maxillary sinus reaching up to the medial wall of the maxillary sinus, other paranasal sinus appearance was normal. Incisional biopsy proved it to be Ewing’s Sarcoma. She was treated by chemotherapy using Vincristine, Adriamycin, and Cyclophosphamide alternating with Etoposide & Ifosfamide and Radiotherapy, and this resulted in complete regression of the tumor. Repeated PET scans every 6 months did not suggest any recurrence of the right maxillary sinus tumor. We concluded that treatment by induction chemotherapy followed by radiation therapy leads to a favorable outcome in the above described case, avoiding the morbidity that can result from surgical options.

  16. Hyperprolactinemia Secondary to Allergic Fungal Sinusitis Compressing the Pituitary Gland

    Directory of Open Access Journals (Sweden)

    Nikita Chapurin

    2016-01-01

    Full Text Available Objective. We aim to describe the first case in the literature of allergic fungal sinusitis (AFS presenting with hyperprolactinemia due to compression of the pituitary gland. Case Presentation. A 37-year-old female presented with bilateral galactorrhea and occipital headaches of several weeks. Workup revealed elevated prolactin of 94.4, negative pregnancy test, and normal thyroid function. MRI and CT demonstrated a 5.0 × 2.7 × 2.5 cm heterogeneous expansile mass in the right sphenoid sinus with no pituitary adenoma as originally suspected. Patient was placed on cabergoline for symptomatic control until definitive treatment. Results. The patient underwent right endoscopic sphenoidotomy, which revealed nasal polyps and fungal debris in the sphenoid sinus, consistent with AFS. There was bony erosion of the sella and clivus. Pathology and microbiology were consistent with allergic fungal sinusitis caused by Curvularia species. Prolactin levels normalized four weeks after surgery with resolution of symptoms. Conclusion. Functional endoscopic sinus surgery alone was able to reverse the patient’s pituitary dysfunction. To our knowledge, this is the first case of AFS presenting as hyperprolactinemia due to pituitary compression.

  17. Electrical carotid sinus stimulation in treatment resistant arterial hypertension.

    Science.gov (United States)

    Jordan, Jens; Heusser, Karsten; Brinkmann, Julia; Tank, Jens

    2012-12-24

    Treatment resistant arterial hypertension is commonly defined as blood pressure that remains above goal in spite of the concurrent use of three antihypertensive agents of different classes. The sympathetic nervous system promotes arterial hypertension and cardiovascular as well as renal damage, thus, providing a logical treatment target in these patients. Recent physiological studies suggest that baroreflex mechanisms contribute to long-term control of sympathetic activity and blood pressure providing an impetus for the development of electrical carotid sinus stimulators. The concept behind electrical stimulation of baroreceptors or baroreflex afferent nerves is that the stimulus is sensed by the brain as blood pressure increase. Then, baroreflex efferent structures are adjusted to counteract the perceived blood pressure increase. Electrical stimulators directly activating afferent baroreflex nerves were developed years earlier but failed for technical reasons. Recently, a novel implantable device was developed that produces an electrical field stimulation of the carotid sinus wall. Carefully conducted experiments in dogs provided important insight in mechanisms mediating the depressor response to electrical carotid sinus stimulation. Moreover, these studies showed that the treatment success may depend on the underlying pathophysiology of the hypertension. Clinical studies suggest that electrical carotid sinus stimulation attenuates sympathetic activation of vasculature, heart, and kidney while augmenting cardiac vagal regulation, thus lowering blood pressure. Yet, not all patients respond to treatment. Additional clinical trials are required. Patients equipped with an electrical carotid sinus stimulator provide a unique opportunity gaining insight in human baroreflex physiology.

  18. Image guidance in endoscopic sinus surgery and skull base surgery

    Institute of Scientific and Technical Information of China (English)

    Mitchell R.Gore; Brent A.Senior

    2012-01-01

    Objective The objective of this study was to review the current clinical applications and impact of intraoperative imaging on endoscopic sinonasal and skull base procedures in adult and pediatric patients.Methods The PubMed database was searched for articles related to the use of image guidance in otolaryngology using the search terms "image guidance otolaryngology".This was supplemented by the authors′ experience utilizing image guidance in nearly 3000 endoscopic sinus and skull base procedures.Results The literature demonstrates that intraoperative image guidance has utility in primary and revision endoscopic sinus surgery,as well as endoscopic surgery of the skull base.Image guidance also has applications in pediatric endoscopic surgery,such as pediatric sinus surgery and repair of choanal atresia.Conclusions Intraoperative image guidance,when combined with a thorough knowledge of paranasal sinus and skull base anatomy and technical proficiency,can provide improved safety when performing otolaryngologic procedures from endoscopic sinus surgery to endoscopic skull base surgery.While not a substitute for knowledge of anatomy,the increased availability and usability of image guidance systems make them a useful tool in the armamentarium of the otolaryngologist/head and neck surgeon and neurosurgeon.

  19. Endoscopic transsphenoidal approach to pituitary adenomas invading the cavernous sinus

    Institute of Scientific and Technical Information of China (English)

    TAO Yu-xin; QU Qiu-yi; WANG Zhen-lin; ZHANG Qiu-hang

    2010-01-01

    Background Surgery of pituitary adenomas invading cavernous sinus has always been thought as a challenge due to the complex anatomical structures and high risk of complications. The purpose of this study was to evaluate endoscopic trarssphenoidal approach to pituitary adenomas invading cavernous sinus.Methods The clinical data of 22 patients who admitted to Xuanwu Hospital with pituitary adenomas invading cavernous sinus were analyzed retrospectively. All patients underwent endoscopic transsphenoidal surgery. To expose the surgical field sufficiently, the opening of sellar floor was exceeded the bone overlying the invaded cavernous sinus, and synthetic dura was used to repair and strengthen the sella floor for preventing the leak of cerebrospinal fluid.Results Among 22 patients, total resection was achieved in 14, subtotal resection in 5, and partial resection in 3; no patient underwent insufficient resection. Visual symptoms improved in 7 of 9 patients. In one patient diplopia disappeared.Headache was relieved to various extents in all patients. No serious complications were found. Patient's hospital stay ranged from 7 to 20 days.Conclusion These data suggest that the endoscopic transsphenoid approach is a safe, minimally invasive, and efficient surgical technique, which might be an important therapeutic strategy for the pituitary adenoms invading cavernous sinus.

  20. Unroofed coronary sinus in a patient with neurofibromatosis type 1

    Directory of Open Access Journals (Sweden)

    Luciano Pereira Bender

    2013-12-01

    Full Text Available OBJECTIVE: To report the uncommon association between neurofibromatosis type 1 (NF1 and unroofed coronary sinus. CASE DESCRIPTION: Girl with four years and six months old who was hospitalized for heart surgery. The cardiac problem was discovered at four months of life. On physical examination, the patient presented several café-au-lait spots in the trunk and the limbs and freckling of the axillary and groin regions. Her father had similar skin findings, suggesting the NF1 diagnosis. The cardiac evaluation by echocardiography disclosed an atrial septal defect of unroofed coronary sinus type. This cardiac finding was confirmed at surgery. The procedure consisted of the atrial septal defect repair with autologous pericardium. COMMENTS: NF1 is a common autosomal dominant disorder caused by mutations in the NF1 gene. Among the NF1 findings, congenital heart defects are considered unusual. In the literature review, there was no association between NF1 and unroofed coronary sinus, which is a rare cardiac malformation, characterized by a communication between the coronary sinus and the left atrium, resultant from the partial or total absence of the coronary sinus roof. It represents less than 1% of atrial septal defect cases. More reports are important to determine if this association is real or merely casual, since NF1 is a common condition.