When would you perform an escharotomy on a circumferential burn?

• A. When a circumferential full-thickness burn compromises distal perfusion or causes escalating pressure
• B. Only after edema has fully resolved
• C. Only for electrical burns
• D. Only if pain is unbearable

Answer: (A)

When a burn encircles a limb and is full-thickness, the tough eschar can act like a tightening tourniquet. As swelling develops, that constriction traps tissue pressure and can cut off blood flow, risking ischemia and necrosis. An escharotomy is performed to release this constriction and restore distal perfusion, addressing rising compartment pressure and preventing complications. The crucial trigger is signs that perfusion is compromised or that pressure is escalating, making this an urgent intervention.

Edema resolving on its own isn’t a prerequisite for the procedure, and waiting for edema to subside can allow ischemia to worsen. The burn mechanism (electrical vs. other) isn’t the sole determinant; the deciding factor is circumferential full-thickness involvement with perfusion compromise. Pain alone doesn’t indicate the need for an escharotomy, since it doesn’t reliably reflect blood flow or pressure.