Escharotomy is indicated when the circulation is compromised due to increased pressure in a burned limb or when a circumferential burn of the chest wall results in
respiratory compromise by restricting normal chest wall movement.
The following guidelines describe the technique:
Clinical Practice Guidelines Escharotomy for Burn Patients NSW Statewide Burn Injury Service
These guidelines from New Zealand provide a concise reference:
Review the procedure with this blog post:
This video demonstrates the procedure: