Effect of Different Body Position on Intraabdominal Pressure in Mechanically Ventilated Patients

Each set of measurements of intraabdominal pressure included intra bladder and intragastric pressure in the supine position followed by the semi-recumbent position at head of bed 30. All four measurements were taken over a period of 5 to 10 min or less to reduce the possibility of changes in intraabdominal pressure over time. Three sets of readings were taken at least 4 h apart over a 24-h period.