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AMBULATORY ANESTHESIA

Antiemetic Prophylaxis for Postdischarge Nausea and Vomiting and Impact on Functional Quality of Living During Recovery in Patients with High Emetic Risks: A Prospective, Randomized, Double-Blind Comparison of Two Prophylactic Antiemetic Regimens

From the Department of Anesthesiology, Wake Forest University School of Medicine, Winston-Salem, North Carolina.

Address correspondence and reprint requests to Peter H. Pan, MSEE, MD, Department of Anesthesiology, Wake Forest University School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157. Address e-mail to ppan{at}wfubmc.edu.

BACKGROUND: We compared two antiemetic prophylaxis regimens, their efficacy for preventing postdischarge nausea and vomiting, and their impact on quality of living, during recovery.

METHODS: Sixty-four women undergoing outpatient gynecological surgery and at high risk for emesis were randomized into one of two groups. The study group received intraoperative IV dexamethasone 8 mg and ondansetron 4 mg, followed with an 8 mg oral disintegrating ondansetron tablet, to be taken on discharge and in the morning of postoperative days 1 and 2. The control group received only the IV ondansetron 4 mg intraoperatively. The incidence and severity of emetic symptoms and pain were assessed while patients were in the recovery room and via telephone and patient diary for 5 days after discharge. A modified functional living index of emesis was used to assess the impact on quality of living during recovery.

RESULTS: Sixty patients, 30 in each group, completed the study. The incidences for postdischarge nausea were 57% and 20%, and for postdischarge vomiting 20% and 3% in the control and study groups, respectively, for the period between the 8th and 120th hours postanesthesia (P < 0.05). Thirty-three percent of the study and 60% of the control group reported that emetic symptoms negatively affected their quality of living (P < 0.05).

CONCLUSIONS: When compared with a single dose of intraoperative IV ondansetron prophylaxis, our study regimen of additional intraoperative dexamethasone and once a day ondansetron significantly reduced the incidence of postdischarge nausea and vomiting and its negative impact on quality of living during the first 5 days of recovery.

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