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Patient and procedural characteristics
| Patient characteristics | Nr. (%) |
| Age | 65.9 ± 12.7 years |
| Male sex | 12 (60) |
| Mean Ejection Fraction (%) | 44±16 |
| Pacing indications | |
| AV block in sinus rhythm | 14 (65) |
| Cardiac resynchronization therapy | 6 (30) |
| Slow conducting atrial fibrillation | 1 (5) |
| QRS aspect | |
| Normal | 9 (45) |
| Left bundle branch block (LBBB) | 10 (50) |
| Right bundle branch block (RBBB) | 1 (5) |
| Procedural characteristics | Nr. (%) |
| Device implanted | |
| Dual chamber pacemaker | 18 (90) |
| Single chamber pacemaker | 1 (5) |
| CRT-D device | 1 (5) |
| Procedural parameters | |
| Pacing threshold (V/0.4 msec) | 0.56±0.2 |
| Detection (mV) | 10.3±3.9 |
| Impedance (Ohm) | 684.9±112.2 |
| Fluoroscopy time (min) | 13.8±8.5 |