“…There were 12 studies with 8706 intubations conducted in the ED 8,13,22,24e26,28,33,36,38,41,44 ; 7 studies including 2231 intubations in the pre-hospital setting 23,29,39,40,43,46,47 ; 10 studies with 2737 intubations in the ICU 4e6,27,30e32, 34,35,37 ; and 3 studies with 1390 intubations that were emergently intubated in the hospital outside of the operating room, ICU, or ED 21,42,45 (Fig. 2).…”