Table I.
Clinical characteristics of the studied group and subgroups defined by AF recurrence within 6 months
| Characteristic | All subjects n = 238 |
R‡ (+) n = 96 |
R‡ (–) n = 142 |
P-value* |
|---|---|---|---|---|
| Female gender | 79 (33.2) | 37 (38.5) | 42 (29.6) | 0.16 |
| Age, median (IQR) [years] | 55 (47–61) | 56 (49–61) | 55 (46–61) | 0.22 |
| Body mass index [kg/m2] | 27.8 (25.5–31.1) | 27.6 (24.5–31.5) | 28.3 (25.8–31.1) | 0.58 |
| Procedure time [min] | 130 (105–155) | 135 (110–160) | 120 (105–152.5) | 0.045 |
| Fluoroscopy time [s] | 973 (681–1531) | 1013.5 (752–1569) | 963 (655–1460) | 0.26 |
| RF application time [s] | 2655 (2019–3360) | 2708 (2105–3540) | 2645 (1924–3270) | 0.22 |
| Isolation of vena cava superior† | 148 (62.2) | 51 (53.1) | 97 (68.3) | 0.021 |
| AF duration | 5 (3–8) | 5 (3–9) | 5 (3–7) | 0.61 |
| Persistent AF | 36 (15.1) | 13 (13.5) | 23 (16.2) | 0.71 |
| Lone AF | 75 (31.5) | 29 (30.2) | 46 (32.4) | 0.78 |
| AF within 48 h after ablation | 68 (28.6) | 35 (36.5) | 33 (23.2) | 0.029 |
| Coronary artery disease | 24 (10.1) | 13 (13.5) | 11 (7.7) | 0.19 |
| Hypertension | 139 (58.4) | 57 (59.4) | 82 (57.7) | 0.89 |
| Diabetes | 18 (7.6) | 11 (11.4) | 7 (4.9) | 0.080 |
| Heart failure | 3 (1.3) | 1 (1.0) | 2 (1.4) | 0.57 |
| Left atrium dimension | 4.13 (0.50) | 4.16 (0.45) | 4.13 (0.49) | 0.73 |
| Hyperlipidemia | 51 (21.4) | 22 (22.9) | 29 (20.4) | 0.74 |
Results were presented as n (%).
*
t test for continuous variables, χ2 for dichotomous variables; comparison between the group with AF recurrence within 6 months vs. those without; p values < 0.05 are boldfaced;
†
during the same procedure, with pulmonary vein isolation;
‡
recurrence.