• Khalid Ahsan, Nighat Abbas, Syed Mohammad Nadeem Naqvi, Ghulam Murtaza, and Sabahat Tariq.
• J Pak Med Assoc. 2014 Mar 1;64(3):242-6.

ObjectiveTo compare the efficacy of ondansetron alone and combination of ondansetron and dexamethasone in preventing post-operative nausea and vomiting in patients undergoing laparoscopic cholecystectomy.MethodsThe randomised control trial was conducted from April 23 to August 22, 2009, at the Liaquat National Hospital, Karachi, and comprised 100 American Society of Anaesthesiology I and II patients undergoing laparoscopic cholecystectomy. Half of the subjects comprised Group A and received ondansetron alone, while Group B received combination of ondansetron and dexamethasone. They were randomised by opaque envelope method. Group A received ondansetron 4 mg while Group B received ondansetron 4 mg with dexamethasone 8 mg, 1 minute before induction. Post-operatively patients were observed for six hours for any episode of nausea or vomiting, or whether the patients required any rescue anti emetic. SPSS 19 was used for statistical analysis.ResultsPatients receiving ondansetron alone showed 14 (28%) with incidence of nausea or vomiting while the other group showed 6 (12%). This difference was statistically significant (p < 0.046).ConclusionCombination of ondansetron and dexamethasone was more efficacious compared to ondansetron alone in the prevention of postoperative nausea and vomiting in patients undergoing laparoscopic cholecystectomy.

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