Effects of CO_2 insufflation on arterial blood gas in laparoscopic surgery and retroperitoneal laparoscopic surgery

Objective:To explore the effects of CO2 insufflation on arterial blood gas in laparoscopic surgery and retroperitoneal laparoscopic surgery under general anesthesia.Methods:One hundred patients with American Society of Anesthesiologists(ASA)gradeⅠ~Ⅱ.Fifty patients underwent elective retroperi-toneoscopic urologic surgery and others underwent laparoscopic general or gynecological surgery.Arterial blood gas were measured at four time points:time before CO2 insufflation,30 and 60 minutes after insuffla-tion,30 minnutes after exsufflation.Results:In the two groups and between the two groups,pH was de-creased and PaCO2 increased significantly(P0.05)at 30 and 60 minutes after insufflation.Conclusion:Retroperitoneal CO2 insufflation produces more effects on the patients’s arterial blood gas.Special attention should be paid to respiration administration and arterial blood gas monitoring.