Propofol drug shortage associated with worse postoperative nausea and vomiting outcomes despite a mitigation strategy

Drug shortages negatively affect patient care and outcomes. Postoperative nausea and vomiting (PONV) can be mitigated using risk assessment and prophylaxis. A 2012 propofol shortage provided an opportunity to study the impact of using prophylactic antiemetics and changing the technique from a propofol infusion to inhaled agents in an ambulatory surgery setting. We retrospectively collected data for 2,090 patients regarding PONV risk factors, anesthetic management, and PONV outcomes for periods before, during, and after the shortage. Patients during the propofol shortage experienced a higher incidence of PONV (11% vs 5% before the shortage), greater need for rescue antiemetics (3% vs 1%), and longer duration of stay (mean [SD] = 124 [115] minutes vs 118 [108] minutes). More patients in this group reported PONV at home (14% vs 7%), and 2 required unplanned admission or return to the hospital. During the shortage, patients had a 2-fold increase in the odds of PONV when adjusted for all risk factors. Antiemetics moderated the association between gender and PONV but did not change the effect of the shortage. Findings suggest that despite mitigation efforts, the inability to use propofol infusion was associated with worse PONV outcomes.