Journal of clinical anesthesia
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Randomized Controlled Trial Clinical Trial
Warmed humidified inspired oxygen accelerates postoperative rewarming.
To investigate the efficacy of warmed, humidified inspired oxygen (O(2)) for the treatment of mildly hypothermic postoperative patients. ⋯ Warming and humidifying inspired O(2) hastens recovery from hypothermia in postoperative patients.
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To investigate the use of propofol by anesthesiologists for its antiemetic effect and to compare our findings with published evidence. ⋯ Many anesthesiologists used propofol for its antiemetic effect. There is strong evidence for its antiemetic efficacy after anesthesia maintained by a propofol infusion and also for its use in the postanesthesia care unit (PACU). However, there is little evidence to support its use purely at induction of anesthesia or as part of a "sandwich" technique in an attempt to reduce postoperative nausea and vomiting. This is especially true in cases lasting longer than a few minutes.
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Multicenter Study Clinical Trial
Relationship between clinical history, coagulation tests, and perioperative bleeding during tonsillectomies in pediatrics.
To determine the value of clinical history and preoperative coagulation tests. ⋯ Preoperative assessment based on the history of bleeding cannot predict abnormal laboratory tests. Neither the history of bleeding or laboratory tests can predict postoperative bleeding.
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To determine the perioperative mortality and intraoperative morbidity according to operative procedure and postoperative period for American Society of Anesthesiologists' Physical Status (ASA-PS) V category patients. ⋯ The ASA-PS V classification is determined subjectively rather than objectively, and can be variable within its parameters, depending on the individual interpretation of ASA classification, patient population, case severity, surgical and anesthesia factors, and the year of the study. Even though immediate perioperative mortality decreased in our patient population, late postoperative mortality increased during the same time period, possibly demonstrating a shift in mortality time rather than an absolute decrease in overall mortality. Although the ASA-PS V category was never intended to be a predictor of outcome, it correlates with perioperative mortality as well as or even better than other classifications of mortality and morbidity. The decreased mortality in the ASA-PS V patient population may be related to different factors, which are beyond the scope of this study.
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Clinical Trial
Poor prediction of blood transfusion requirements in adult liver transplantations from preoperative variables.
To assess the ability of preoperative information to predict intraoperative blood transfusion requirements in adult orthotopic liver transplantation. ⋯ Preoperative variables are poor predictors of intraoperative transfusion requirements even when significant associations exist, identifying a small proportion of the variability observed. A predictive approach based on this method would be too inaccurate to be of clinical use. The majority of the variability in transfusion requirements during liver transplantation most likely results from intraoperative and donor organ factors.