From: Comparison of videolaryngoscopy and direct laryngoscopy by German paramedics during out-of-hospital cardiopulmonary resuscitation; an observational prospective study
First attempt ETI success
Second attempt ETI success
GVL
15 (71.4%)
6 (28.6%)
21
DL
40 (85.1%)
7 (14.9%)
47
55
13
68
Fisher’s exact test two-tailed P-value is 0.199879