Table 1. Definition of adverse events.

Event	Definition
Hypertension	Increase in systolic pressure to ≥180 mm Hg or in diastolic pressure to ≥110 mm Hg, and/or treatment with antihypertensive drugs from entrance into the operating room to discharge
Arrhythmia	Worsening of or new arrhythmia during the procedure, as informed by the anesthesiologist, or in the recovery room, requiring new treatment or change in current treatment
Bronchospasm	Wheezing, dyspnea, coughing, or desaturation during the procedure, as informed by the anaesthesiologist, or in the recovery room, requiring bronchodilator or theophylline
Transient ischemic attack or stroke	Abrupt onset of focal neurological deficit during the procedure, as informed by the anaesthesiologist, or in the recovery room
Myocardial ischemia	New or more severe chest pain, followed by ischemic changes on ECG during the procedure, as informed by the anaesthesiologist, or in the recovery room, requiring treatment
Myocardial infarction	New chest pain, ECG changes (changes in the ST segment, new Q wave) and enzyme changes requiring treatment or ischemic symptoms with new bundle branch block on ECG, as informed by the anaesthesiologist, or in the recovery room
Congestive heart failure (CHF)	Dyspnea with new pulmonary edema on chest X-ray or diagnosis of CHF, as informed by the anaesthesiologist, or in the recovery room
7-day emergency/hospitalization	Admission to the emergency room or hospitalization within 7 days of surgery
Posterior capsule rupture	Operative report or ophthalmologic follow-up records containing this diagnosis or the report of vitrectomy during cataract surgery
Endophthalmitis	Medical record containing this diagnosis

Abbreviation: ECG, electrocardiogram.