Baseline characteristics of the 62 patients
| Mean (SD) age | 59.5 (14.7) years |
|---|---|
| Sex | 33 (53%) male, 29 (47%) female |
| Indication for ablation | 39 (63%) paroxysmal AF, 23 (37%) paroxysmal atrial flutter or tachycardia |
| Left ventricular function | 44 (71%) in group 1, 14 (23%) in group 2, 4 (6%) in group 3 |
| Presence of structural heart disease | 32 patients (52%) |
| History of dc cardioversion | 14 patients (23%) |
| Method of ablation | 50 (81%) by radiofrequency, 12 (19%) by direct current |
| Mode of pacing | 31 (50%) ventricular, 31 (50%) dual chamber |
| Rate responsive pacing | 41 patients (66%) |
| Mode switching capacity | 15 patients (24%) |
| Use of antiarrhythmic drugs at follow up | 10 patients (16%) |
| Mean (SD) length of follow up | 910 (720) days |
AF, atrial fibrillation; dc, direct current.