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Background and purpose: Gallstone is one of the most common problems of hepatobiliary system. Laparoscopic cholecystectomy is a gold standard treatment for this problem. Carbon dioxide (CO2) insufflated in the abdomen for better exposure in laparoscopic cholecystectomy could increase the liver enzyme levels. The goal of this study was to assess the effect of different CO2 pressure (12-16 mm Hg) on liver enzymes in laparoscopic cholecystectomy compared with open cholecystectomy. Materials and methods: In this clinical trial 60 patients were randomly assigned into three groups. The first group had low pressure (12mm Hg) laparoscopic cholecystectomy. The second group had laparoscopic cholecystectomy with high pressure (16mm Hg) and the third group had an open cholecystectomy. To assess the liver enzyme levels we checked the AST, ALT, ALP, LDH, and Bil, before, 24h, and 72h after surgery. Data analysis was done in SPSS ver.15 using repeated measures ANOVA. Results: The changes in liver function tests were significantly different before and 24h after the surgery in first and second group, however, these changes reduced to primary level after 72h. In the group with open cholecystectomy significant changes were seen in AST and ALT levels before and 24h after the surgery which decreased to primary level after 72h. The level of LDH was significantly different before and 24h after the surgery in group one and two. Conclusion: Gas insufflation in to abdomen transiently changed the liver enzyme levels that reduced to primary level after 72h.

Keywords: Gas Pressure, laparascopic, cholecystectomy

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