Changes in thorax-lung compliance during general anesthesia with mechanical ventilation in response to various intraoperative maneuvers

摘要

BACKGROUND: The author evaluated and compared changes in the thorax-lung compliance (C) of the patients under general anesthesia and mechanical ventilation in response to various intraoperative maneuvers. METHODS: With ethics committee approval, 60 ASA physical status I and II patients undergoing elective surgery were studied. The author compared C on supine position with no maneuver as control, with C with cephalad liver retraction by the abdominal retractor (AR), pneumoperitoneum by intraabdominal pressure of 12 mmHg (LS), abdominal wall lift (AL), sternal splitting (SS), and sternum lift (SL) position (BMI