Which sign indicates compartment syndrome requiring urgent evaluation?

Which sign indicates compartment syndrome requiring urgent evaluation?

• A. Severe pain unrelieved by analgesia
• B. Fever
• C. Bradycardia
• D. Jaundice

Answer: (A)

Recognizing urgent compartment syndrome hinges on recognizing that rising pressure inside a muscle compartment compromises blood flow and tissue viability. The most reliable early sign is severe pain that is out of proportion to what you would expect from exam findings and that does not respond to analgesia. This pain occurs because the increasing pressure reduces capillary perfusion, leading to ischemia of the muscles and nerves; pain may also worsen with passive movement of the affected muscles. If not addressed promptly, this can progress to nerve damage, muscle necrosis, and lasting disability, so urgent evaluation and often fasciotomy are needed. Fever, bradycardia, and jaundice do not indicate compartment syndrome. Fever suggests infection, bradycardia points to systemic or autonomic issues, and jaundice relates to liver or biliary problems, none of which explain elevated compartment pressure.

Recognizing urgent compartment syndrome hinges on recognizing that rising pressure inside a muscle compartment compromises blood flow and tissue viability. The most reliable early sign is severe pain that is out of proportion to what you would expect from exam findings and that does not respond to analgesia. This pain occurs because the increasing pressure reduces capillary perfusion, leading to ischemia of the muscles and nerves; pain may also worsen with passive movement of the affected muscles. If not addressed promptly, this can progress to nerve damage, muscle necrosis, and lasting disability, so urgent evaluation and often fasciotomy are needed.

Fever, bradycardia, and jaundice do not indicate compartment syndrome. Fever suggests infection, bradycardia points to systemic or autonomic issues, and jaundice relates to liver or biliary problems, none of which explain elevated compartment pressure.