The Baux score for burns prognosis is calculated as:

• A % TBSA burned × depth score
• B % TBSA burned + inhalation injury score
• C Age (years) + % TBSA + PaO2/FiO2 ratio
• D Age (years) + % TBSA burned (full and partial thickness) ✓

Explanation

The Baux score = patient age (years) + percentage total body surface area (TBSA) burned. A Baux score of 100 traditionally predicted 50% mortality; the Revised Baux Score adds 17 points for inhalation injury to improve predictive accuracy. The score is a simple bedside predictor of mortality in major burns. Modern burn care has improved outcomes such that a Baux score of ~120-140 now corresponds to approximately 50% mortality in specialist centers.

Reference: Bailey & Love's Short Practice of Surgery, 27th ed.

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Written and medically reviewed by the StethoPrep medical team.