Background and objective: Postoperative nausea and vomiting (PONV) occur frequently after
laparoscopic bariatric surgery. The combination of haloperidol, dexamethasone, and ondansetron
may reduce these undesirable events. The aim of this study was to evaluate the intensity of
nausea and pain, the number of vomiting episodes, and morphine consumption in postoperative
(PO) obese patients undergoing laparoscopic sleeve gastrectomy (LSG).
Method: A clinical, randomized, controlled, double-blind study conducted with 90 patients
with body mass index ≥ 35 kg.cm-2. Patients were divided into three groups of 30 individuals
to receive ondansetron 8 mg (Group O); ondansetron 8 mg and dexamethasone 8 mg (Group
OD); and ondansetron 8 mg, dexamethasone 8 mg, and haloperidol 2 mg (Group HDO). We
evaluated the intensity of nausea and pain using the verbal numeric scale, cumulative number
of vomiting episodes, and morphine consumption in the period of 0-2, 2-12, 12-24, and 24-36
hours postoperatively.