TABLE 1.
Baseline characteristics of the study population
| All (N = 193) | Clinical success (N = 158) | No clinical success (N = 35) | p value | |
|---|---|---|---|---|
| Age, years | 48 ± 13 | 48 ± 13 | 52 ± 15 | .103 |
| Female sex, n (%) | 121 (62.7) | 102 (64.6) | 19 (54.3) | .256 |
| BMI, kg/m2 | 23.8 (21.6, 25.8) | 23.8 (21.6, 25.7) | 23.4 (21.6, 27.5) | .925 |
| Hypertension, n (%) | 50 (25.9) | 43 (27.2) | 7 (20.0) | .378 |
| Diabetes, n (%) | 15 (7.8) | 14 (8.9) | 1 (2.9) | .314 |
| Coronary artery disease, n (%) | 4 (2.1) | 3 (1.9) | 1 (2.9) | .554 |
| Hemoglobin, g/dl | 13.4 ± 1.4 | 13.4 ± 1.4 | 13.5 ± 1.4 | .746 |
| Creatinine, mg/dl | 0.72 (0.63, 0.85) | 0.71 (0.62, 0.86) | 0.74 (0.66, 0.82) | .777 |
| LVEF, % | 59.0 (56.0, 63.0) | 59.0 (56.0, 63.0) | 59.0 (55.0, 65.0) | .943 |
| LVEDD, mm | 51.2 ± 5.8 | 51.1 ± 5.9 | 52.0 ± 5.3 | .414 |
| LVESD, mm | 32.0 (29.0, 36.4) | 32.0 (28.6, 36.5) | 32.0 (29.0, 36.0) | .853 |
| Clinical arrhythmias, n (%) | .842 | |||
| PVC only | 126 (65.3) | 104 (65.8) | 22 (62.9) | |
| Non‐sustained VT | 48 (24.9) | 38 (24.1) | 10 (28.6) | |
| Sustained VT | 19 (9.8) | 16 (10.1) | 3 (8.6) | |
| PVC burden, % | 26.0 (15.1, 34.0) | 27.0 (15.6, 34.5) | 20.0 (14.0, 33.0) | .321 |
| PVC‐induced CMP, n (%) | 23 (11.9) | 17 (10.8) | 6 (17.1) | .384 |
| LBBB morphology, n (%) | 181 (93.8) | 149 (94.3) | 32 (91.4) | .459 |
| RBBB morphology, n (%) | 12 (6.2) | 9 (5.7) | 3 (8.6) | |
| Precordial transition, n (%) | .557 | |||
| V1–V2 | 18 (9.3) | 14 (8.9) | 4 (11.4) | |
| V3, | 46 (23.8) | 40 (25.3) | 6 (17.1) | |
| V4–V6 | 129 (66.8) | 104 (65.8) | 25 (71.4) | |
| QRS duration, ms | 144 (133, 158) | 144 (133, 159) | 146 (133, 153) | .490 |
| Total RF application, n | 5 (4, 9) | 5 (4, 8) | 7 (4, 9) | .203 |
| Total RF application time, s | 307 (189, 467) | 297 (188, 454) | 344 (232, 501) | .368 |
| Earliest activation time, ms | −30 (−25, −31) | −30 (−28, −32) | −22 (−18, −24) | <.0001 |
Note: Values are given as mean ± SD, n (%), or median (Q1, Q3).
Abbreviations: BMI, body mass index; CMP, cardiomyopathy; LBBB, left bundle branch block; LVEDD, left ventricular end diastolic dimension; LVEF, left ventricular ejection fraction; LVESD, left ventricular end systolic dimension; PVC, premature ventricular complex; RBBB, right bundle branch block, RF, radiofrequency; VT, ventricular tachycardia.