This review article reminds us that abdominal hypertension and compartment syndrome need to remain on our differential diagnosis for critically ill and injured patients.  Pressure is measured with an intra-bladder catheter. Normal pressure is 5-7 mm HG. Sustained over 12 mm Hg is hypertension and sustained over 20 mm Hg is compartment syndrome. 

References

Arcieri, Talia R. MD; Meizoso, Jonathan P. MD, MSPH, FACS. Intraabdominal hypertension and abdominal compartment syndrome: What you need to know. Journal of Trauma and Acute Care Surgery 99(4):p 504-513, October 2025. | DOI: 10.1097/TA.0000000000004603