Evaluating anatomical factors affecting endotracheal intubation

Critically ill patients often require endotracheal intubation in the emergency department. Sometimes immediate attempts at endotracheal intubation are indicated. In other situations, a momentary delay to assess the anatomic factors that might make intubation difficult is advantageous. This examination should include assessment of nose and oral cavity patency, mobility and posterior depth of the mandible, and mobility and length of the neck.