Preoperative carbohydrate nutrition reduces postoperative nausea and vomiting compared to preoperative fasting

Background: the aim of this prospective, randomized, single-blinded study was to compare the effects of a carbohydrate drink 400 ml given 2 h before the surgery with preoperative overnight fasting on the gastric ph and residual volume, postoperative nausea and vomiting (ponv) and antiemetic consumption in patients undergoing laparoscopic cholecystectomy. materials and methods: forty american society of anesthesiologists physical status i-ii patients who underwent elective laparoscopic cholecystectomy. randomized, prospective, controlled study, gulhane medical faculty and guven hospital department of anesthesiology and reanimation. patients were randomly assigned into two groups: pre-operative carbohydrate drink group (group c, n = 20) and preoperative fasting group (group f, n = 20). group c was given a 400 ml carbohydrate drink 2 h before to the surgery. the patients of group f were fasted 8 h before the surgery. both groups were operated under general anesthesia with volatile anesthetics. results: hemodynamic parameters, demographic data, gastric acidity and residual volumes were similar for both groups. no complications were observed. ponv and antiemetic consumption was lower in group c compared to group f (p = 0.001). patient’s satisfaction was higher in group c (p < 0.001). conclusion: this study showed that pre-operative carbohydrate drink may be used safely and also improves patient’s satisfaction and comfort in patients undergoing laparoscopic cholecystectomy.