What delta pressure mandates fasciotomy?

Delta pressure (DP) = diastolic BP - compartment pressure. DP 30 mmHg in isolation with clinical signs (pain on passive stretch, tenseness, paresthesias) also supports fasciotomy decision.

What is the clinical diagnosis of acute compartment syndrome?

Classic 6P's: Pain out of proportion, Pressure, Paresthesias (earliest neurological sign), Pallor, Paralysis (late), Pulselessness (very late - implies arterial injury not ACS). Diagnostic threshold requires clinical index of suspicion; pressure measurement confirms.

What is the consequence of delayed fasciotomy?

ACS untreated for >6-8 hours: Volkmann's ischemic contracture, permanent nerve damage, myonecrosis, and renal failure from myoglobinuria. Every 30-minute delay increases complication risk significantly. The diagnosis must be clinical + pressure; do not wait for all 6 P's.

Acute Compartment Syndrome Delta Pressure Threshold

Calculate delta pressure (diastolic BP minus intracompartmental pressure) for acute compartment syndrome diagnosis. Delta pressure <30 mmHg is the threshold for emergent fasciotomy. Intracompartmental pressure >30 mmHg alone is a supporting finding.

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