The effects of different abdominal pressures on pulmonary function test results in laparoscopic cholecystectomy

This study aimed to examine the effects of differing intra-abdominal pressures on pulmonary function test results in laparoscopic cholecystectomy. Forty-five patients were operated on under 3 different intra-abdominal pressures: group A (8 mm Hg), group B (12 mm Hg), and group C (15 mm Hg). On the first day before and after the operation, forced vital capacity (FVC), forced expiratory volume in the first second (FEV1), FEV1/FVC rate, peak expiratory flow speed (PEF), and maximal middle expiration speed (FEF25-75) values were measured using Vmax 229 spirometry. No significant differences were observed among the 3 groups regarding preoperative and postoperative FVC, FEV1, FEV1/FVC, PEF, and FEF25-75 values (P=0.96, P=0.73, P=0.48, P=0.34, and P=0.33, respectively). When the groups' preoperative and postoperative values were compared, FVC, FEV1, and PEF values significantly decreased in each group. The FEF25-75 values statistically significantly decreased in groups B and C when compared with their preoperative values; however, the decrease in group A was not significant. In conclusion, different intra-abdominal pressures during laparoscopic cholecystectomy had similar effects on pulmonary function test results. However, lower intra-abdominal pressures were associated with slightly more negative effects on FEF25-75 values.