Which symptom indicates compartment syndrome requiring urgent action?

• A. Increasing pain out of proportion to exam
• B. Normal sensation
• C. Stable vitals
• D. No swelling

Answer: (A)

Rising pressure within a closed muscle compartment cuts off blood flow, so tissue becomes ischemic quickly. The hallmark clue is pain that is out of proportion to what you see on exam and that worsens when the muscles are stretched (passive motion). That disproportionate, escalating pain is the urgent signal to act now to relieve the pressure, because delays can cause muscle necrosis, nerve damage, and serious complications.

Normal sensation or stable vitals don’t rule it out—sensory changes can develop later, and a patient can appear hemodynamically stable early on. Swelling isn’t a reliable early indicator either. Immediate actions include removing restrictive dressings or casts and notifying the surgical team for urgent decompression if the diagnosis is suspected.