HEMODYNAMIC-EFFECTS OF PNEUMOPERITONEUM DURING LAPAROSCOPIC CHOLECYSTECTOMY - A PROSPECTIVE COMPARATIVE-STUDY USING BIOIMPEDANCE CARDIOGRAPHY

The haemodynamic effects of increased intra-abdominal pressure during laparoscopic cholecystectomy in 22 patients were compared with those i n 11 patients undergoing open cholecystectomy; bioimpedance cardiograp hy was used for monitoring at predetermined time intervals. In the lap aroscopy group stroke volume, cardiac and ejection velocity indices we re significantly decreased and total peripheral resistance index was s ignificantly increased during the insufflation period when compared wi th preinsufflation and corresponding values in the group undergoing op en operation. Routine intraoperative parameters such as heart rate and blood pressure did not show any significant change or indicate altera tions in cardiovascular performance during laparoscopic procedures. Co ntinuous non-invasive cardiovascular monitoring by bioimpedance cardio graphy may be useful in patients with limited cardiac function.