Inhalation Injury Grading (Bronchoscopic AIS) — free guideline decision tool

This tool grades inhalation injury severity by the abbreviated injury score (AIS 0–4) of the initial bronchoscopic appearance, framing airway management and ventilation strategy.

Bronchoscopic appearance → AIS 0 (none) to 4 (massive, mucosal sloughing/necrosis). Grades 2–4 carry worse survival and prompt escalating airway clearance and lung-protective ventilation.

Use after smoke/inhalation exposure to grade injury from bronchoscopy and anticipate airway compromise — particularly upper-airway edema, which can progress within 24 h.

AIS predicts mortality imperfectly; the revised Baux score (age + %TBSA + 17×inhalation) predicts death better, so combine the grade with TBSA and oxygenation. (original synthesis · not guideline verbatim) Facial/oropharyngeal burns, hoarseness, stridor, carbonaceous sputum, or a closed-space fire warrant early airway evaluation and a low threshold to intubate. Severe grades need aggressive bronchial hygiene (clearing eschar/pseudomembrane) and lung-protective ventilation.

For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.

Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.

Inputs: Bronchoscopic appearance Grade 2 (moderate): moderate erythema, carbonaceous deposits, bronchorrhea or bronchial obstruction → Result: Inhalation injury AIS Grade 2（Grade: Grade 2 (moderate). Grades 2–4 have worse survival than 0–1, Management direction: Moderate: bronchial hygiene, nebulized bronchodilators, chest physiotherapy, close monitoring of airway edema and oxygenation, Airway warning: Facial/oropharyngeal burns, hoarseness, stridor, carbonaceous sputum, closed-space fire history → beware airway obstruction; edema can progress within 24 h of injury, so evaluate/intubate early） Inputs: Bronchoscopic appearance Grade 0 (none): no carbonaceous deposits/erythema/edema/bronchorrhea/obstruction → Result: Inhalation injury AIS Grade 0（Grade: Grade 0 (no injury). Grades 2–4 have worse survival than 0–1, Management direction: Mild/none: monitor airway and oxygenation, supportive care, Airway warning: Facial/oropharyngeal burns, hoarseness, stridor, carbonaceous sputum, closed-space fire history → beware airway obstruction; edema can progress within 24 h of injury, so evaluate/intubate early）