Preoperative use of granisetron plus dexamethasone and granisetron alone in prevention of post operative nausea and vomiting in tonsillectomy.

This prospective study was done for to see the efficacy of preoperative use of granisetron plus dexamethasone (Group A) & granisetron (Group B) alone for the postoperative prevention of nausea & vomiting after tonsillectomy operation. One hundred patients undergoing tonsillectomy & adenoidectomy operation under general anaesthesia who were admitted in the Mymensingh Medical College Hospital during the period from July 2008 to June 2009 with American Society of Anaesthesiologists (ASA) grade I & II with age 3-40 years, body weight 10-60 kgs, were studied. Observation of this study was analyzed in the light of comparison between the two groups. All results were expressed as mean±SEM. Age in Group A 15.98±1.028 & Group B 17.18±0.961 years; Weight in Group A 38.40±1.492 & Group B 39.76±1.561 kgs and operational duration in Group A 52.60±0.786 & Group B 52.70±0.823 minutes. The studied groups were statistically matched for age, weight, duration of surgery. We observed that the effects of combination of granisetron & dexamthasone are more than granisetron alone in prevention of nausea & vomiting after tonsillectomy operation. The frequency of vomiting was 4% in combination & 16% in single therapy which is statically significant (p<0.05).