OLIGURIA DURING LAPAROSCOPIC SURGERY

Oliguria is infrequently viewed as a complication of laparoscopic surg ery. The rate of urine output in six healthy patients undergoing lapar oscopic surgery was measured during the period of CO2 pneumoperitoneum and for several hours after desufflation. The average hourly urine ou tput during insufflation was 0.30 +/- 0.14 mL/kg despite an average ho urly intravenous infusion rate of lactated Ringer's solution of 13.0 /- 4.0 mL/kg. After release of pneumoperitoneum, urine output increase d 467% to 1.7 +/- 1.1 mL/kg per hour. Patients remained hemodynamicall y unchanged perioperatively. Preoperative and postoperative blood urea nitrogen and creatinine concentrations did not significantly differ. We discuss the potential etiologic factors in the development of oligu ria in the setting of the increased intra-abdominal pressure of pneumo peritoneum and the implications of this acute but reversible renal dys function.