Journal of clinical anesthesia
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Randomized Controlled Trial Clinical Trial
Evaluation of pain following electrocautery tubal ligation and effect of intraoperative fentanyl.
To evaluate pain following laparoscopic tubal sterilization (LTS) and the effects of supplemental intraoperative fentanyl. ⋯ Pain following LTS by electrocautery is of significant magnitude and may require relatively large doses of opioids for adequate management. Supplemental intraoperative fentanyl 1 microgram/kg did not produce a clinically significant reduction in either pain scores or opioid requirements.
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To determine the effects of magnesium sulfate on neuromuscular transmission in parturients. ⋯ In this patient population, clinically relevant infusions of magnesium sulfate produced significant changes in neuromuscular transmission as manifested by loss of treppe phenomenon and diminished TOF response to ulnar nerve stimulation.
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Randomized Controlled Trial Clinical Trial
Intravenous trimethaphan during epidural plus general anesthesia decreases the direct radial artery pressure lower than the brachial artery pressure.
To determine whether vasodilators such as sodium nitroprusside (SNP) and trimethaphan (TMP) produce a pressure difference between the radial artery and the brachial artery during epidural plus general anesthesia or simple general anesthesia. ⋯ Our results demonstrate that TMP decreases the direct radial artery systolic and mean pressures to levels below the brachial artery systolic and mean pressures in patients who received epidural plus general anesthesia.
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Randomized Controlled Trial Clinical Trial
Neurocirculatory responses to intubation with either an endotracheal tube or laryngeal mask airway in humans.
To compare the sympathetic and hemodynamic responses to intubation with either an endotracheal tube (ETT) or laryngeal mask airway (LMA). ⋯ Because of the substantial reduction in the neurocirculatory responses to the LMA versus ETT, the LMA may prove advantageous in patients in whom HR and MAP increases may predispose to adverse cardiac or cerebrovascular events.
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Comparative Study Clinical Trial Controlled Clinical Trial
Pulmonary vascular resistance and right ventricular function in morbid obesity in relation to gastric bypass surgery.
To investigate right ventricular function (RVF) during gastric bypass surgery in morbidly obese patients. To study the influence of obstructive sleep apnea syndrome on hemodynamics and RVF as a preoperative evaluation in morbidly obese patients. ⋯ The presence of chronic hypoxemia and hypercarbia in our morbidly obese patients with obstructive sleep apnea syndrome while awake, causes significant increases in PA pressure and PVR. We also demonstrated that RVEF did not change significantly during gastric bypass procedure despite significant decreases in PA pressure, PCWP, and PVR after opening the abdomen. This decrease in PA pressure and PVR may be caused by decreases in pleural pressure reflected by a concomitant decrease in esophageal pressure.