Table 2.

Difficult airway characteristics (n = 136)

	[n, (%)]
anticipated difficult airway	32 (23.5%)
LEMON
0 points	85 (62.5%)
LEMON ≥1 point	51 (37.5%)
IDS
0 points	39 (28.8%)
1–5 points	81 (59.6%)
≥ 5 points	16 (11.6%)
Cormack/Lehane I	59 (43.4%)
II	40 (29.4%)
III	23 (16.9%)
IV	4 (2.9%)
not documented	10 (7.4%)*

*including 2 patients with tracheotomy tube exchange