Proposed revised LEMON based airway assessment score
| Airway assessment score | Points |
|---|---|
| Number of positive unfavourable “look” criteria | 0–4 points |
| Mouth opening less than three finger breadths | 1 point |
| Hyo-mental distance less than three finger breadths | 1 point |
| Thyro-hyoid distance less than two finger breadths | 1 point |
| Presence of an obstructed airway | 1 point |
| Presence of poor neck mobility | 1 point |
| Total:maximum airway assessment score = 9, minimum = zero | |