Table 1.
Clinical characteristics of the study population.
| Single TSP (n = 202) | Double TSP (n = 276) | P | |
|---|---|---|---|
| Age [years] | 62 (55–71) | 64 (57–71) | 0.110 |
| Females, | 79 (39%) | 89 (32%) | 0.131 |
| Persistent AF | 138 (68%) | 184 (67%) | 0.762 |
| Re-ablation | 75 (37%) | 48 (17%) | < 0.001 |
| BMI [kg/m2] | 28 (25–32) | 28 (26–32) | 0.119 |
| CHA2DS2-VASc score | 2 (1–3) | 2 (1–3) | 0.339 |
| LAd [mm] | 43 (39–47) | 45 (41–48) | 0.001 |
| LVEF [%] | 60 (55–64) | 60 (51–64) | 0.781 |
| Radiation time [min] | 18.6 (11.5–25.5) | 16.2 (10.1–25.0) | 0.217 |
| Radiation dose [cGycm2] | 3782 (1.800–7.200) | 6200 (3.038–10.323) | < 0.001 |
| Procedure time [min] | 150 (120–180) | 145 (120–175) | 0.823 |
| Experienced operator | 74% | 79% | 0.208 |
| Recurrences > 6 months* | 55 (71%) | 79 (69%) | 0.788 |
| Complications | 20 (10%) | 29 (11%) | 0.555 |
*
Recurrences > 6 months in patients with available implanted device (pacemaker, ICD, ILR) available in 193 patients (40% of the study population).
Data presented as number (%) or median (interquartile range); AF — atrial fibrillation; BMI — body mass index; LAd — left atrial diameter; LVEF — left ventricular ejection fraction; TSP — transseptal puncture