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Baseline Characteristics of the 80 Patients with VVI Pacemakers
| Mean age, years | 58.9 ± 11.4 |
| Male/Female | 28/52 (1:1.9) |
| Underlying arrhythmias | |
| Sick sinus syndrome | 41 (51.3%) |
| AV block | 39 (48.8%) |
| - 2nd degree | 5 (6.3%) |
| - 3rd degree | 34 (42.5%) |
| Follow-up duration, months | 25.7 ±2.5 |
