What delta pressure threshold prompts fasciotomy in compartment syndrome?

What delta pressure threshold prompts fasciotomy in compartment syndrome?

• A. Delta pressure ≤ 30 mmHg
• B. Delta pressure ≥ 60 mmHg
• C. Delta pressure between 30 and 60 mmHg requiring observation
• D. Delta pressure is not used in decision making

Answer: (A)

Perfusion in acute compartment syndrome depends on the pressure gradient between the arterial diastolic pressure and the pressure inside the muscle compartment. This delta pressure (ΔP) is calculated as diastolic blood pressure minus intracompartmental pressure. When ΔP drops to 30 mmHg or less, tissue perfusion becomes critically compromised, and fasciotomy is indicated to relieve the pressure and restore blood flow. If ΔP is higher, perfusion is typically adequate, and close observation is more appropriate rather than immediate decompression. Delta pressure is a decision-making tool in this context, and using it helps avoid unnecessary surgery when perfusion is still sufficient.

Perfusion in acute compartment syndrome depends on the pressure gradient between the arterial diastolic pressure and the pressure inside the muscle compartment. This delta pressure (ΔP) is calculated as diastolic blood pressure minus intracompartmental pressure. When ΔP drops to 30 mmHg or less, tissue perfusion becomes critically compromised, and fasciotomy is indicated to relieve the pressure and restore blood flow. If ΔP is higher, perfusion is typically adequate, and close observation is more appropriate rather than immediate decompression. Delta pressure is a decision-making tool in this context, and using it helps avoid unnecessary surgery when perfusion is still sufficient.