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Comparison of granisetron and granisetron plus dexamethasone for the prevention of postoperative nausea and vomiting after laparoscopic cholecystectomy.

Author(s): Biswas BN, Rudra A

Affiliation(s): Department of Anesthesiology, Calcutta National Medical College and Hospital, India. mita-tota@yahoo.co.in

Publication date & source: 2003-01, Acta Anaesthesiol Scand., 47(1):79-83.

Publication type: Clinical Trial; Randomized Controlled Trial

BACKGROUND: Laparoscopic cholecystectomies are associated with an appreciably high rate of postoperative nausea and vomiting (PONV). This study was designed to compare the effectiveness of granisetron plus dexamethasone with granisetron alone for the prevention of postoperative nausea and vomiting in patients after laparoscopic cholecystectomy. METHODS: In a randomized, double-blind study, 120 patients of both sexes received granisetron 40 micro g kg-1 alone or granisetron 40 micro g kg-1 plus dexamethasone 8 mg (n=60 of each) intravenously immediately before induction of anesthesia. Perioperative anesthetic care was standardized in all patients. Patients were then observed for 24 h after administration of the study drug. RESULTS: A complete response (defined as no PONV and no need for another rescue antiemetic) was achieved in 83% of the patients given granisetron and in 95% of the patients given granisetron plus dexamethasone (P<0.05). The overall cumulative incidences (0-24 h) of PONV were 11 (18.3%) in the granisetron and three (5%) in the combination group. No difference in adverse events were observed in any of the groups. CONCLUSION: The combination (granisetron plus dexamethasone) further increases the chance of complete response than granisetron alone. Therefore, the combination might be considered clinically relevant in a high risk setting.

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