What percentage of total body surface area (TBSA) is considered a low survivability wound?

A total body surface area (TBSA) burn percentage is crucial in determining the severity of burns and the associated prognosis for survival. In the context of survivability, a burn that covers more than 70% of the total body surface area is considered to be a low survivability wound. This threshold indicates that the extent of the burns is so severe that the body’s ability to manage the resulting fluid loss, metabolic demands, and risk of infection is greatly compromised.

Burns covering this level of TBSA can lead to shock, multi-organ failure, and ultimately death if not treated promptly and effectively. This understanding is supported by extensive medical literature and burn care guidelines that categorize the impact of burns on the body based not only on the depth but also on the percentage of skin affected.

A percentage higher than 70% implies a profound injury that significantly decreases the chances of survival, whereas lower percentages may not carry the same level of risk. Understanding these thresholds helps prioritize care for patients and informs treatment decisions in critical medical scenarios.