. 2021 Apr 23;8(1):e001622. doi: 10.1136/openhrt-2021-001622
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Table 4.
The initial pacemaker types
| AAI | 1 |
| VVI | 8 |
| DDD | 14 |
| VVI+ICD | 6 |
| DDD+ICD | 3 |
| CRT-P | 2 |
| CRT-D | 3 |