Journal of clinical anesthesia
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Randomized Controlled Trial Clinical Trial
Tracheal intubation through the laryngeal mask airway using a gum elastic bougie: the effect of head position.
To determine the effect of head position on success of tracheal intubation through a Laryngeal Mask Airway (LMA) using a gum elastic bougie. ⋯ This technique cannot be recommended as an alternative to direct laryngoscopy following a failed intubation.
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To quantify the impact on peak airway pressure of pressure-controlled and volume-controlled ventilation during Laryngeal Mask Airway (LMA) use. ⋯ Pressure-controlled rather than volume-controlled ventilation can improve the effectiveness of mechanical ventilation in patients with high airway pressure.
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Randomized Controlled Trial Comparative Study Clinical Trial
Dose of prophylactic intravenous ephedrine during spinal anesthesia for cesarean section.
To compare the incidence of maternal hypotension associated with spinal anesthesia for cesarean section when 10-, 15-, or 20-mg prophylactic boluses of intravenous (IV) ephedrine are used. ⋯ In the conditions of this study, a single bolus of IV ephedrine with doses of either 15 or 20 mg decreased significantly the incidence of maternal hypotension as compared to a single 10-mg bolus of ephedrine.
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Randomized Controlled Trial Clinical Trial
Transcranial Doppler ultrasonography with induction of anesthesia and neuromuscular blockade in surgical patients.
To evaluate the cerebral vascular effects of cis-atracurium and rocuronium given after thiopental induction of anesthesia. ⋯ cis-Atracurium and rocuronium, administered after thiopental, do not produce clinically relevant changes in cerebral blood flow velocity.
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To assess the responses to a survey asking anesthesiologists to report their clinical practice patterns for postoperative nausea and vomiting (PONV) prophylaxis. These practice patterns data may be useful for understanding how to optimize the decision to provide PONV prophylaxis. ⋯ We found a wide range of PONV prophylaxis management patterns. This variation in clinical practice may reflect uncertainty about the efficacy of available interventions, or differences in practitioners' clinical judgment and beliefs about how to treat PONV. Some therapies with proven benefit for PONV may be underused. Our results may be useful for designing studies aimed at determining the impact on PONV rates when physicians develop and implement guidelines for PONV prophylaxis.