Journal of clinical anesthesia
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Randomized Controlled Trial Multicenter Study Clinical Trial
Oral dolasetron mesylate for prevention of postoperative nausea and vomiting: a multicenter, double-blind, placebo-controlled study. The Oral Dolasetron PONV Prevention Study Group.
To examine the safety and effectiveness of a range of single oral doses of dolasetron mesylate for the prevention of postoperative nausea and vomiting. ⋯ Single oral doses of dolasetron, administered 1 to 2 hours before induction of anesthesia, are safe and effective for preventing postoperative nausea and vomiting in this patient sample. Maximal antiemetic response was seen with the 50 mg oral dolasetron dose.
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To ascertain patients' recall of the risks of labor epidural analgesia from a discussion of informed consent during active labor. ⋯ Recall of risks by parturients is similar to the recall of risks by other patients, and it does not appear to be affected by parity or the reported level of pain.
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Randomized Controlled Trial Clinical Trial
Altered reactivity to acetylcholine in the pulmonary circulation after cardiopulmonary bypass is part of reperfusion injury.
To investigate whether a time sequence of acetylcholine (ACH) reactivity indicative of endothelial reperfusion injury could be demonstrated in the pulmonary circulation in patients after cardiopulmonary bypass (CPB). ⋯ The maintained reactivity to ACH directly after CPB, followed by no reaction at 1 to 1.5 and 4 hours, was in agreement with experimental findings and indicates endothelial reperfusion injury caused by the period with no blood flow through the pulmonary artery during CPB and subsequent reperfusion.
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To evaluate the onset of spinal anesthesia with power spectral heart rate analysis to determine the influence of the block on the autonomic nervous system. ⋯ Power spectral heart rate analysis during low thoracic bupivacaine spinal anesthesia is compatible with decreased sympathetic activity during stable hemodynamic intervals. Insertion of hip endoprosthesis resulted in a dramatic, transient increase in sympathetic activity, indicating that sympathetic activation was still possible despite the presence of surgical anesthesia from the subarachnoid block.
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Clinical Trial
Effects of split torso positioning and laparoscopic surgery for donor nephrectomy on respiratory mechanics.
To test whether split torso positioning, abdominal insufflation, and other procedures performed during laparoscopic nephrectomy would affect mechanical impedances to inflation [i.e., elastance (E) and resistance (R) of the total respiratory system (Ers, and Rrs), lungs (EL and RL), and chest wall (Ecw and Rcw)] differently from previously studied laparoscopic procedures. ⋯ Laparoscopic nephrectomy affects lung and chest wall mechanical properties differently from other laparoscopic procedures. This finding could be due to the split torso positioning, and the effects of abdominal swelling on the chest wall caused by administration of more perioperative fluids with laparoscopic nephrectomy.