Operator sub-group (device order) | p value | ||||||
---|---|---|---|---|---|---|---|
Experts (DLM then AWS) n = 20 | Novices 1 (DLM then AWS) n = 20 | Novices 2 (AWS then DLM) n = 20 | |||||
Events* (out of 200 attempts) | Median [Q1–Q3]** | Events* (out of 200 attempts) | Median [Q1–Q3]** | Events* (out of 200 attempts) | Median [Q1–Q3]** | ||
Technically valid attempts, n | 179 | 9 [8–10] | 177 | 9 [9, 10] | 184 | 9 [9, 10] | 0.59**** |
Adverse technical event | |||||||
Esophageal intubation, n | 0 | 0 [0–0] | 1 | 0 [0–0] | 1 | 0 [0–0] | 1.0*** |
Delayed ETI time (>60 s.), n | 0 | 0 [0–0] | 5 | 0 [0–0] | 7 | 0 [0–0] | 0.04*** |
Epiglottis luxation, n | 21 | 1 [0–2] | 13 | 0 [0–1] | 8 | 0 [0–1] | 0.04**** |
Epiglottis unloaded, n | 0 | 0 [0–0] | 2 | 0 [0–0] | 0 | 0 [0–0] | 0.32*** |
ETT dislodgment, n | 0 | 0 [0–0] | 0 | 0 [0–0] | 3 | 0 [0–0] | 0.1*** |
Blade malposition in glottis, n | 0 | 0 [0–0] | 9 | 0 [0–0] | 5 | 0 [0–0] | 0.43*** |