Characteristics of the 43 patients
| Number of patients | |
|---|---|
| Type of heart disease | |
| Coronary artery disease | 23 (53%) |
| Congestive cardiomyopathy | 4 (9%) |
| Wolff-Parkinson-White syndrome | 6 (14%) |
| Other | 1 (2%) |
| No organic heart disease | 9 (21%) |
| Ejection fraction < 40% | 12 (28%) |
| History of myocardial infarction | 18 (42%) |
| Indications for electrophysiological study | |
| Symptomatic ventricular activity | 3 (7%) |
| Sustained VT | 9 (21%) |
| Ventricular fibrillation | 9 (21%) |
| Syncope | 10 (23%) |
| Supraventricular tachycardia | 11 (26%) |
| Other | 1 (2%) |
| Arrhythmia induced | |
| Negative | 23 (43%) |
| Non-sustained VT | 4 (9%) |
| Sustained monomorphic VT | 4 (9%) |
| Ventricular fibrillation | 6 (14%) |
| Supraventricular tachycardia | 6 (14%) |
Two patients had no ejection fraction data. Percentages do not total 100% because of rounding.
VT, ventricular tachycardia.