Patients will be continuously monitored in the post anesthesia care unit (PACU) and the medical floor for a total of 24 hours post operatively. Episodes of nausea, vomiting and administration of rescue therapy for either nausea or vomiting will be recorded and time stamped. In addition, severity of nausea will be evaluated by the patient using a standard verbal response scale (VRS) ranging from 0-10, 0 being no nausea and 10 being severe nausea. Rescue therapy for PONV episodes will consist of 4 mg ondansetron followed by 0.625 mg droperidol if necessary.