pulmonary
Difficult Airway Assessment
Estimate the likelihood of difficult laryngoscopy or intubation before induction. Evaluate five LEMON criteria and receive a risk level with airway strategy guidance.
Based on: ASA 2022 · DAS 2015
Input
Overview
Systematically evaluate airway planning risk across five clinical domains before induction. A clinical decision framework — not a scoring system.
Evidence Summary
Assessment framework
This tool integrates established concepts including Mallampati classification, LEMON assessment, and difficult mask ventilation risk factors. Rather than a single score, it evaluates five clinical domains to answer: 'Is it safe to induce anesthesia?'
- Intubation difficulty and ventilation difficulty are independent risk domains
- Difficult ventilation + low oxygen reserve = highest-risk combination
- Rescue difficulty combined with any other risk can be life-threatening