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Table 1 Grades of intra-abdominal hypertension

From: Abdominal damage control surgery and reconstruction: world society of emergency surgery position paper

Grade *IAP Organ failure
I 12-15 Absent
II 16-20 Absent
III 21-25 Absent
IV >25 Absent
**ACS >20 Present
  1. *IAP = Intra-abdominal pressure.
  2. **ACS = Abdominal Compartment Syndrome.