Anesthesia and analgesia
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Anesthesia and analgesia · Jan 2011
Comparative StudyIntraoperative thromboelastometry is associated with reduced transfusion prevalence in pediatric cardiac surgery.
The majority of pediatric cardiac surgery patients receive blood transfusions. We hypothesized that the routine use of intraoperative thromboelastometry to guide transfusion decisions would reduce the overall proportion of patients receiving transfusions in pediatric cardiac surgery. ⋯ The results suggest that routine use of intraoperative thromboelastometry in pediatric cardiac surgery to guide transfusions is associated with a reduced proportion of patients receiving transfusions and an altered transfusion pattern.
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Anesthesia and analgesia · Nov 2011
Randomized Controlled Trial Comparative StudyA randomized crossover study to determine the effect of a 30° head-up versus a supine position on the functional residual capacity of term parturients.
Airway management continues to pose challenges to the obstetric anesthesiologist. Functional residual capacity (FRC), which acts as an oxygen reservoir, is reduced from the second trimester onwards and is exacerbated in the supine position. Mechanisms to increase FRC may delay the onset of hypoxemia during periods of apnea. Values for changes in FRC in term parturients in semierect positions are unknown. We hypothesized that the FRC of healthy term parturients would increase significantly in the 30° head-up position in comparison with the supine position. ⋯ We have demonstrated that the FRC of healthy term parturients increases significantly in the 30° head-up position in comparison with supine.
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Anesthesia and analgesia · Jan 2011
Comparative StudyThe utility of pre-residency standardized tests for anesthesiology resident selection: the place of United States Medical Licensing Examination scores.
The resident selection process could be improved if United States Medical Licensing Examination (USMLE) scores obtained during residency application were found to predict success on the American Board of Anesthesiology (ABA) written examination (part 1). In this study, we compared USMLE performance during medical school to anesthesiology residency standardized examination performance. ⋯ The USMLE is a significant predictor of residency ABA/ASA In-Training Examination and ABA written examination performance in anesthesiology. Our program has significantly increased its average written board examination performance while increasing the relative importance of USMLE in resident selection.
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Anesthesia and analgesia · Jan 2011
Comparative StudyRemifentanil decreases sevoflurane requirements to block autonomic hyperreflexia during transurethral litholapaxy in patients with high complete spinal cord injury.
An inhaled anesthetic concentration required to block autonomic hyperreflexia (AHR) is high enough to cause severe hypotension in patients with high spinal cord injury (SCI). We determined the effects of remifentanil on the sevoflurane requirement to block AHR in SCI. ⋯ Target-controlled concentrations of 1 and 3 ng/mL remifentanil would reduce the requirement of sevoflurane combined with 50% nitrous oxide to block AHR by 16% and 29%, respectively, in SCI patients undergoing transurethral litholapaxy.
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Anesthesia and analgesia · Jan 2011
Comparative StudyTechnical communication: respiratory variation in pulse pressure and plethysmographic waveforms: intraoperative applicability in a North American academic center.
Dynamic variables are the best predictors of fluid responsiveness in patients under general anesthesia and mechanical ventilation; namely, respiratory variations in pulse pressure and in the plethysmographic waveform. However, these variables have potential limitations. ⋯ We extracted clinical data from all anesthesia procedures performed at our institution in 2009 and identified the number of cases that presented predetermined conditions of application. Among the 12,308 procedures, 39% met the criteria for the noninvasive monitoring of variations in the plethysmographic waveform of which 23% had arterial lines and met the criteria for the invasive monitoring of variations in pulse pressure.