Table 1 Demographics, pre-operative airway examination measures, and intubation variables
Variable | Guedel placed first (n = 29) | AOA placed first (n = 29) |
|---|---|---|
Sex; male | 16 (55.2%) | 20 (69.0%) |
Age; years | 60 (53–65) | 64 (58–68) |
Body mass index | 34.8 (31.0–39.0) | 36.1 (33.0–40.0) |
Presence of facial hair | 11 (37.9%) | 13 (44.8%) |
Presence of teeth | 15 (51.7%) | 17 (58.6%) |
History of Snoring | 26 (89.7%) | 28 (96.6%) |
Formal diagnosis of obstructive sleep apnea | 14 (48.3%) | 14 (48.3%) |
Neck extension | ||
Full | 29 (100%) | 26 (89.7%) |
Limited | 0 (0%) | 3 (10.3%) |
Mouth opening; cm | 4.5 (4.0–5.0) | 5.0 (4.0–5.5) |
Presence of retrognathia | 4 (13.8%) | 7 (24.1%) |
Distance from maxillary incisors to angle of mandible; cm | 11.5 (11.0–12.0) | 11.5 (11.0–12.0) |
Nasal/Oral anatomical abnormality | 0 (0%) | 0 (0%) |
Mallampati Grade | ||
1 | 5 (17.2%) | 7 (24.1%) |
2 | 18 (62.1%) | 12 (41.4%) |
3 | 4 (13.8%) | 9 (31.0%) |
4 | 2 (6.9%) | 1 (3.5%) |
Easy one-handed mask ventilation without oral airway | 21 (72.4%) | 22 (78.6%) |