“…[4][5][6][7][8][9][10]12,13,130,154,157,158,[160][161][162][163][164][165][166][167][168][169][170][171] Severe cognitive impairment patients typically undergo emergency tracheal intubation to treat or prevent respiratory system insufficiency. 27,30,44,69 There is also substantial documentation that blunt or penetrating thoracic injury can cause respiratory distress and hypoxemia.…”