Table 2.
Features of patients with and without successful intubation.
| Intubation groupa | |||
|---|---|---|---|
|
|
|||
| Feature | Unsuccessful (n=37) | Successful (n=113) | p-value |
| Patient characteristics | |||
| Age, y | 52 (15–94) | 62 (18–92) | 0.12 |
| Weight, kilograms (n=148) | 79 (54–181) | 79 (29–181) | 0.03 |
| Sex | 0.07 | ||
| Male | 30 (81) | 74 (65) | |
| Female | 7 (19) | 39 (35) | |
| Height, ft | (n=34) | (n=105) | 0.05 |
| 4 to 5 ½ | 8 (24) | 44 (42) | |
| 5 ½ to 6 ½ | 26 (76) | 61 (58) | |
| Features of EMS experience | |||
| EMS crew | 0.009 | ||
| Paramedic/EMT-basic | 21 (57) | 37 (33) | |
| Paramedic/paramedic | 16 (43) | 76 (67) | |
| Intubator experience, y (n=131) | 5.0 (0.8–30.7) | 7.1 (0.6–33.3) | 0.22 |
| Intubator experience, y | (n=35) | (n=96) | 0.61 |
| <1 | 1 (3) | 6 (6) | |
| 1 to 4 | 16 (46) | 37 (39) | |
| 5 to 9 | 8 (23) | 17 (18) | |
| ≥10 | 10 (29) | 36 (38) | |
| Intubation attempts | 0.03 | ||
| 1 | 22 (59) | 90 (80) | |
| 2 | 13 (35) | 16 (14) | |
| 3 | 2 (5) | 4 (4) | |
| 4 | 0 | 3 (3) | |
| Intubation attempts | 0.01 | ||
| 1 | 22 (59) | 90 (80) | |
| >1 | 15 (41) | 23 (20) | |
| Cervical collar | 0.10 | ||
| No | 25 (68) | 91 (81) | |
| Yes | 12 (32) | 22 (19) | |
| Rapid sequence intubation | (n=112) | 0.72 | |
| No | 27 (73) | 85 (76) | |
| Yes | 10 (27) | 27 (24) | |
| Endotracheal tube size, mm, internal diameter | (n=36) | 0.02 | |
| 6, 6.5, or 7 | 15 (42) | 73 (65) | |
| 7.5 or 8 | 21 (58) | 40 (35) | |
| Glottis view | (n=30) | (n=109) | <0.001 |
| Entire | 8 (27) | 87 (80) | |
| Some | 4 (13) | 15 (14) | |
| Little | 5 (17) | 7 (6) | |
| None | 13 (43) | 0 | |
| Stylet | (n=34) | 0.44 | |
| Gum bougie | 27 (79) | 76 (67) | |
| Wire/satin slip | 6 (18) | 32 (28) | |
| Other | 1 (3) | 5 (4) | |
EMS, emergency medical services; EMT, emergency medical technician
a
Values are median (range) or No. of patients (%)