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. 2018 Mar 30;5(1):22–28. doi: 10.15441/ceem.16.185

Table 3.

Anticipated difficult intubation by the LEMON criteria

Criteria No collar (n=76) Collar (n=76)
E Incisor distance < 3 finger breadths 2 (3) 70 (92)
M Mallampati score ≥ class III 12 (16) 69 (91)
O Body mass index ≥ 30 kg/m2 1 (1) 1 (1)
N Neck extension < 35° 1 (1) 76 (100)
Anticipated difficult airway 14 (18) 76 (100)

Values are represented as number (%).

LEMON, look externally, evaluate 3-3-2, Mallampati score, obstruction, and neck mobility.