Table 5. Laryngeal View according to the Height of the Operating Table.
| Height of the operating table | Cormack and Lehane classification | Group S (n = 97) | Group R (n = 96) |
|---|---|---|---|
| Umbilicus | 1 | 3 (3.1) | 9 (9.3) |
| 2 | 12 (12.4) | 16 (16.7) | |
| 3 | 17 (17.5) | 15 (15.6) | |
| 4 | 10 (10.3) | 4 (4.2) | |
| Xiphoid | 1 | 8 (8.2) | 11 (11.5) |
| 2 | 15 (15.5) | 18 (18.8) | |
| 3 | 20 (20.6) | 16 (16.7) | |
| 4 | 12 (12.4) | 7 (7.3) |
Values are expressed as number of patients (%). Group S: sniffing position, Group R: ramped position. At the score of ≥ 3, intubation is likely to be difficult.