Table 1.

Definitions of adverse events.

Adverse event	Definition
Aspiration	Presence of vomit at the glottic inlet visualized during intubation in a previously clear airway
Cardiac arrest	Pulseless dysrhythmia occurring during intubation
Cuff leak	Air leak around a cuffed ETT requiring replacement of the ETT
Dental trauma	Fracture or avulsion of tooth during intubation
Dysrhythmia	Bradycardia or any ventricular dysrhythmia during intubation
Esophageal intubation	Inadvertent placement of the ETT in the esophagus requiring removal and reintubation
Extubation	Accidental removal of the ETT requiring reintubation
Hypotension	Decrease in systolic blood pressure to <90 mmHg
Hypoxemia	A decrease in oxygen saturation below 90%
Laryngospasm	Adduction of vocal cords preventing passage of the ETT through the glottic inlet
Mainstem intubation	Radiographic identification of the tip of the ETT in a mainstem bronchus

ETT, endotracheal tube; mmHg, millimeters of mercury.