Table 4 Difficulty of mask ventilation and tracheal intubation
Nipple group (n = 72) | Umbilical group (n = 72) | P value | |
|---|---|---|---|
Difficulty of mask ventilation | |||
Warters scale score | 1 [1–2] | 1 [1–2] | 0.604 |
No. of difficult cases (score ≥ 4) | 0 (0%) | 0 (0%) | NA |
Difficulty of intubation | |||
Intubation difficulty score (IDS) | 1 [0–1] | 0 [0–0] | < 0.001 |
A. No. of attempts (n − 1) | |||
1 | 72 (100%) | 72 (100%) | NA |
2 | 0 (0%) | 0 (0%) | |
B. No. of operators (n − 1) | |||
1 | 72 (100%) | 72 (100%) | NA |
C. No. of alternative techniques (n) | |||
0 | 71 (98.6%) | 71 (98.6%) | NA |
1 | 1 (1.3%) | 1 (1.3%) | |
D. Cormack grade (grade - 1) | |||
1 | 66 (91.7%) | 69 (95.8%) | 0.457 |
2 | 5 (6.9%) | 3 (4.2%) | |
3 | 1 (1.3%) | 0 (0%) | |
E. Lifting force required (1) | 48 (66.7%) | 6 (8.3%) | < 0.001 |
F. External laryngeal pressure (1) | 15 (20.8%) | 0 (0%) | < 0.001 |
G. Adducted vocal cords (1) | 1 (1.3%) | 1 (1.3%) | NA |
Ease of intubation | |||
Easy (IDS = 0) | 21 (29.2%) | 63 (87.5%) | < 0.001 |
Slight difficulty (0 < IDS ≤ 5) | 51 (70.8%) | 9 (12.5%) | |
Moderate to major difficulty (IDS >5) | 0 (0%) | 0 (0%) | |