What is the normal range for intra-abdominal pressure (IAP)?

The normal range for intra-abdominal pressure (IAP) is generally accepted to be between 3 to 7 mm Hg. Maintaining normal IAP is critical because elevated pressures can lead to abdominal compartment syndrome, which may compromise organ function and hemodynamics. It is important to monitor IAP, especially in critically ill patients, as abnormalities can indicate significant underlying pathology. The range of 3 to 7 mm Hg represents a balance where the intra-abdominal contents can function properly without exerting excessive pressure on surrounding organs and structures. This pressure range helps ensure that the organs within the abdomen have adequate perfusion and can maintain their physiologic functions.