Table 1.

Respiratory events

Etiology	Contributing Factors
Laryngospasm 35 (54.7%)	Anesthesia 53 (86.9%)
Airway obstruction 7 (10.9%)	Patient disease 39 (63.9%)
Emesis 5 (7.8%)	Perioperative team 4 (6.6%)
Apnea 4 (6.3%)	Surgical issues 3 (4.9%)
Bronchospasm 4 (6.3%)	Other 3 (4.9%)
Other/Not Specified 13 (20.3%)
Multiple events 7 (10.9%)

Some patients had more than one etiology. “Other” includes equipment issues and verbal miscommunication. “Location” refers to where the event occurred, which may not have been the anesthetizing location. Contributing factors were assessed in 61 of 64 events (95.3%)