Table 2 Anesthetic factors associated with arytenoid dislocation
Variable | Non-dislocation (n = 25,505) | Dislocation (n = 33) | P-value | ||
|---|---|---|---|---|---|
Cormack Lehane grade | 0.462 | ||||
1 | 18,832 | (73.8%) | 28 | (84.8%) | |
2 | 5684 | (22.3%) | 5 | (15.2%) | |
3 | 973 | (3.8%) | 0 | (0%) | |
4 | 16 | (0.1%) | 0 | (0%) | |
Number of intubation attempts | 0.999 | ||||
1 | 24,794 | (97.2%) | 32 | (97.0%) | |
2 | 697 | (2.7%) | 1 | (3.0%) | |
3 | 13 | (0.1%) | 0 | (0%) | |
4 | 1 | (0%) | 0 | (0%) | |
Stylet use | 939 | (3.7%) | 1 | (3.0%) | 1.000 |
BURP maneuver | 2445 | (9.6%) | 1 | (3.0%) | 0.326 |
Tracheal intubation tool | |||||
Conventional laryngoscope | 25,077 | (98.3%) | 33 | (100.0%) | 0.967 |
Video-laryngoscope | 327 | (1.3%) | 0 | (0%) | |
Lightwand | 83 | (0.3%) | 0 | (0%) | |
Fiberoptic laryngoscope | 18 | (0%) | 0 | (0%) | |
Endotracheal tube ballooning | 25,413 | (99.6%) | 33 | (100%) | 1.000 |
Esophageal stethoscope | 23,686 | (92.9%) | 30 | (90.9%) | 0.921 |
Neuromuscular monitoring | 9531 | (37.4%) | 8 | (24.2%) | 0.169 |
Armoured tube | 193 | (0.8%) | 1 | (3.0%) | 0.617 |
Endotracheal tube size (ID, mm) | 0.237 | ||||
< 6 | 14 | (0%) | 0 | (0%) | |
6 | 202 | (0.8%) | 1 | (3.0%) | |
6.5 | 260 | (1.0%) | 1 | (3.0%) | |
7 | 14,526 | (57.0%) | 26 | (78.8%) | |
7.5 | 66 | (0.3%) | 0 | (0%) | |
8 | 10,434 | (40.9%) | 5 | (15.2%) | |
8.5 | 2 | (0%) | 0 | (0%) | |
9 | 1 | (0%) | 0 | (0%) | |
Tracheal intubation by 1st-yr anaesthesia residents | 4707 | (18.5%) | 11 | (33.3%) | 0.048 |