* Treatment groups were compared using the rank sum test for continuous variables and the Fisher exact test for categorical variables. † Pain was assessed at the time of PACU admission using a visual analog scale. Pain information was missing for two placebo patients and three vecuronium patients who were too somnolent to be assessed. ‡ Two of the six patients in the placebo group who experienced emesis had been administered “rescue” vecuronium. § Postoperative complications include reintubation, aspiration, hypoxemia, intractable pain, intractable nausea or emesis, intensive care unit admission, and death.