Table 4.
Acute procedural data according to persistent atrial fibrillation classification
| PeAF (n = 87) | Long-standing PeAF (n = 34) | Total patients (n = 121) | P-value | |
|---|---|---|---|---|
| AF at the beginning of the procedure | 30 (34.4) | 13 (38.2) | 43 (35.5) | 0.99 |
| Procedure time skin-to-skin (min) | 57.0 (50.0–65.5) | 60.0 (52.5–71.0) | 57.0 (50.0–67.0) | 0.15 |
| FAM time (min) | 12.0 (11.0–14.0) | 12.5 (11.0–14.0) | 12.0 (11.0–14.0) | 0.42 |
| Fluoroscopy time (s) | 40.0 (18.0–68.0) | 52.5 (33.0–71.2) | 43.0 (20.0–71.0) | 0.07 |
| Fluoroscopy dose (mGy) | 3.5 (1.2–7.5) | 4.7 (3.2–10.2) | 4.2 (1.3- 8.4) | 0.17 |
| <0.5 mV points during SR (%) | 6.0 (1.0–11.0) | 16.0 (13.0–20.0) | 7.0 (2.0–14.0) | <0.01 |
| Low-voltage area > 1cm2 during SR | 17 (19.5) | 13 (38.2) | 30 (24.8) | 0.04 |
| Total RF time (min) | 15.8 (14.1–18.4) | 16.7 (15.5–18.9) | 16.5 (14.3–18.4) | 0.17 |
| Total VisiTags | 59 (53–69) | 64 (58–71) | 60 (54–70) | 0.14 |
| Mean anterior AI | 390 (365–408) | 380 (360–405) | 387 (360–410) | 0.40 |
| Mean posterior AI | 337 (310–375) | 330 (305–370) | 335 (300–375) | 0.45 |
| Right pulmonary veins | ||||
| RF time (min) | 8.6 (7.6–9.7) | 9.0 (8.0–10.9) | 8.8 (7.7–10.0) | 0.12 |
| VisiTags | 31 (27–38) | 33 (31–41) | 31 (28–39) | 0.10 |
| Mean VisiTag time (s) | 14.9 (13.0–18.9) | 14.8 (12.7–18.1) | 14.9(12.8–18.5) | 0.22 |
| Mean anterior AI | 382 (357–398) | 379 (354–396) | 380 (355–397) | 0.41 |
| Mean posterior AI | 343 (325–361) | 339 (320–350) | 341 (320–360) | 0.39 |
| First-pass isolation | 75 (86.2) | 28 (82.4) | 103 (85.1) | 0.58 |
| Acute reconnection | 2 (2.3) | 2 (5.9) | 4 (3.3) | 0.19 |
| Anterior right PVs antrum WT (mm) | 1.5 (1.3–1.9) | 1.4 (1.1–1.9) | 1.4 (1.1–1.9) | 0.40 |
| Posterior right PVs antrum WT (mm) | 1.1 (0.9–1.2) | 0.98 (0.8–1.2) | 1.0 (0.7–1.2) | 0.37 |
| Left pulmonary veins | ||||
| RF time (min) | 7.5 (6.5–8.6) | 7.7 (6.5–9.1) | 7.7 (6.5–8.6) | 0.42 |
| VisiTags | 28 (23–33) | 31 (27–33) | 28 (24–33) | 0.40 |
| Mean VisiTag time (s) | 15.0 (13.0–19.0) | 14.8 (12.7–18.2) | 15.0 (12.7–19.0) | 0.22 |
| Mean anterior AI | 408 (382–431) | 403 (379–428) | 405 (380–430) | 0.36 |
| Mean posterior AI | 348 (330–376) | 342 (320–370) | 345 (320–375) | 0.29 |
| First-pass isolation | 73 (83.9) | 30 (88.2) | 103 (85.1) | 0.78 |
| Acute reconnection | 2 (2.3) | 1 (2.9) | 3 (2.5) | 0.99 |
| Anterior left PVs antrum WT (mm) | 2.04 (2.0–2.4) | 1.98 (1.8–2.2) | 2.1 (1.9–2.4) | 0.45 |
| Posterior left PVs antrum WT (mm) | 1.13 (1.0–1.3) | 0.99 (0.8–1.1) | 1.1 (0.9–1.3) | 0.31 |
| Overall acute first-pass | 65 (74.7) | 24 (70.6) | 89 (73.6) | 0.65 |
| Overall acute reconnection | 3 (3.4) | 3 (8.8) | 6 (5.0) | 0.13 |
| Acute procedural complication | 2 (2.3) | 2 (5.9) | 4 (3.3) | 0.45 |
Results are reported as n (%) for categorical variables and median (interquartile range) or mean ± standard deviation for continuous variables. Statistically significant differences between the two groups are shown in bold (P < 0.05).
AI, ablation index; FAM, fast anatomical map; RF, radiofrequency; SR, sinus rhythm; WT, wall thickness.