“…Fortunately, the incidence of 'can't intubate, can't ventilate' is much lower (0.01-0.03% cases) (Cheney, 1994). However, overall, in patients in the emergency department the incidence of both is significantly higher (Walls et al, 1997;Tayal et al, 1999;Calderon et al, 1995), with trauma patients having their own recognized causes of difficulty with tracheal intubation (Bryden and Gwinnutt, 2000) ( Table 2).…”