Cardiorespiratory changes during robotic pelvic surgeries- A prospective observational Study

Introduction: Robot assisted pelvic surgeries are associated with cardiorespiratory changes due to conjunction of carboperitoneum and steep Trendelenburg position for prolonged durations. Aim: To determine the changes in cardiovascular and respiratory systems in patients undergoing elective robot assisted pelvic surgeries under general anesthesia.Materials and Methods: A prospective observational study was conducted in 35 patients scheduled for elective robot assisted pelvic surgeries. Patients belonging to ASA class I and II were included and their intraoperative hemodynamic and respiratory parameters were noted post induction (baseline), at pneumoperitoneum, at and every 15 minutes after steep Trendelenburg positioning, at resuming supine position, at deflation of pneumoperitoneum and post-deflation. Primary outcome was mean arterial pressure. Secondary outcomes were systolic and diastolic blood pressures, heart rate, central venous pressure, airway pressures (peak, plateau and mean), pulmonary compliance, minute ventilation, end tidal carbondioxide levels and blood gas values.