Table 5 Glottic views
From: Comparison of glottic views and intubation times in the supine and 25 degree back-up positions
Cormack and Lehane Grades | Supine (Part 1) (n = 374) n (%) | Back-up (Part 2) (n = 407) n (%) | Williams and others (1991) [21] n (%) | Yentis & Lee (1998) [22] n (%) | Cook (2000) [23] n (%) | Suzuki and others (2012) [24] n (%) |
|---|---|---|---|---|---|---|
I | 186 (49.7) | 228 (56.0) | 1205 (86.9) | 450 (67.9) | 334 (66.8) | 175 (54.7) |
II | 163 (43.6) | 151 (37.1) | 140 (10.1) | 205 (30.9) | 143 (28.6) | 99 (30.9) |
III | 23 (6.1) | 24 (5.9) | 42 (3.0) | 8 (1.2) | 23 (4.6) | 42 (13.1) |
IV | 2 (0.5) | 2 (0.5) | 0 | 0 | 0 | 4 (1.2) |
Not Recorded | 0 | 2 (0.5) |