“…The skill of ETI had become the definitive airway control for most critically ill and injured patients, be they in the operating room, in the early phases of an intensive care unit (ICU) hospitalization, or in the out-of-hospital setting [2][3][4][5][6][7][8][9]11]. The presumed presence of significant physiological derangements (e.g., hypoxemia, hypercarbia, hypoperfusion) in cardiopulmonary arrest, head injury and hemorrhagic states made ETI an intuitive procedure to perform as soon as feasible in the critically ill and injured [4,5,9,11].…”