Table 2.
Acute procedural characteristics, including differences between primary and satellite centers cohorts
| Acute procedural characteristics | All patients (n = 85) | Primary center (n = 49) | Satellite centers (n = 36) | p |
|---|---|---|---|---|
| AF at baseline, no. (%) | 61 (72%) | 34 (69%) | 27 (75%) | 0.57 |
| AA drugs at the time of the procedure | 9 (11%) | 6 (12%) | 3 (8%) | 0.72 |
| Arrhythmia mean cycle length, ms | 175 [163–200] | 175 [162–205] | 175 [165–190] | 0.67 |
| Bi‐atrial mapping, no. (%) | 75 (88%) | 41 (84%) | 34 (94%) | 0.18 |
| AF mappings per pt, no. | 1 [1–2] | 1 [1–2] | 1 [1–2] | 0.13 |
| Ablation protocol, no. (%) | ||||
| Electrogram‐based | 85 (100%) | 49 (100%) | 36 (100%) | |
| Additional pulmonary veins isolation | 36 (42%) | 12 (24%) | 24 (67%) | <0.001 |
| Total radiofrequency time, min | 43 ± 13 | 48 ± 13 | 37 ± 10 | <0.001 |
| Radiofrequency time to AF termination, min | 27 ± 16 | 31 ± 17 | 21 ± 12 | 0.004 |
| Fluoroscopy time, min | 5 [2–9] | 4 [2–7] | 8 [4–13] | 0.001 |
| Dose, cGy/cm2 | 2014 [808–4300] | 1422 [690–2538] | 4028 [1705–6725] | <0.001 |
| Procedure time, min | 162 [130–205] | 170 [150–210] | 142 [120–191] | 0.005 |
| AF termination, no. (%) | 75 (88%) | 45 (92%) | 30 (83%) | 0.31 |
| Sinus rhythm conversion by ablation, no. (%) | 55 (65%) | 34 (69%) | 21 (58%) | 0.29 |
| Complications, no. (%) | 1 (1%) | 1 (2%) | 0 (0%) | 1 |
| Transient AV block | 1 | 1 | 0 |
Note: Values are mean ± standard deviation, median [interquartile range], or no. (%).
Continuous data were compared between primary and satellite centers using a non‐parametric Wilcoxon test or Welch t‐test, according to their distribution. Categorical data were compared using the χ 2 or Fisher test. All analyses were conducted using R version 4.0.0 (www.r-project.org). A p < 0.05 was considered statistically significant.