Research Article
Learning Curves of Macintosh Laryngoscope in Nurse Anesthetist Trainees Using Cumulative Sum Method
Table 1
Patient characteristics and airway assessment details.
| | | Successful intubation
(n = 323) | Failed intubation
(n = 65) | P value |
| | Age (yrs) | 41 (29–53) | 47 (32–60) | 0.05 | | BMI (kg/m2) | 22.5 (20.2–25.2) | 22.8 (19.7–25.3) | 0.99 | | ASA physical status | | | 0.87 | | 1 | 71 (22) | 13 (20.3) | | | 2 | 244 (75.8) | 49 (76.6) | | | 3 | 7 (2.2) | 2 (3.1) | | | Thyromental distance (FB) | | | 0.42 | | ≤3 | 155 (48.0) | 27 (41.5) | | | 3 | 168 (52.0) | 37 (58.5) | | | Limit flexion and extension of neck | 3 (0.9) | 2 (3.1) | 0.20 | | Interincisor gap (FB) | | | 0.03 | | 2 | 7 (2.2) | 4 (6.3) | | | 3 | 291 (90.1) | 60 (92.3) | | | 4 | 25 (7.7) | 1 (1.5) | | | Upper lip bite test classification | | | 0.71 | | 1, 2 | 312 (96.6) | 62 (95.4) | | | 3 | 11 (3.4) | 3 (4.6) | | | Mallampati classification | | | 0.002 | | 1, 2 | 315 (97.5) | 57 (87.3) | | | 3, 4 | 8 (2.5) | 8 (12.7) | | | Laryngoscopic view | | | <0.001 | | 1, 2 | 320 (99.1) | 51 (78.5) | | | 3, 4 | 3 (0.9) | 14 (21.5) | |
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Data are median (interquartile range) or number (percentage).
BMI: body mass index; ASA: American Society of Anesthesiologists; FB: fingerbreadth.
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