Table 2.
Procedural data
| Electroanatomic mapping system, n (%) | |
| Carto | 23 (88) |
| Rhythmia | 3 (12) |
| Pre- or periprocedural imaging, n (%) | |
| Intracardiac echocardiography | 4/26 (15) |
| Magnetic resonance imaging | 4/26 (15) |
| Computed tomography | 1/26 (4) |
| Clinical VT inducible, n (%) | 24 (92) |
| Number of inducible VT, n (inter-quartile range) | 1 (1–1) |
| Clinical VT cycle length (ms) | 385 (343–428) |
| Haemodynamic support, n (%) | |
| General anaesthesia | 1 (4) |
| Impella | 1 (4) |
| Procedure duration (min) | 196.5 ± 55.8 |
| Fluoroscopy time (min) | 19.5 ± 9.4 |
| Fluoroscopy dose (cGy·cm2) | 3847 ± 5613 |
| Coronary angiography before energy application, n (%) | 12 (46) |
| Unipolar ablation in same procedure, n (%) | 15 (58) |
| Mean maximum applied energy during B-RFA (W) (total range) | 37.5 ± 8.9 (24–50) |
| Acute success, n (%) | |
| PVC, suppression | 7/12 (58) |
| Clinical VT, non-inducibility | 14/14 (100) |
| Overall VT, non-inducibility | 12/14 (86) |
| Periprocedural complications, n (%) | |
| Overall | 3 (12) |
| Groin complications | 2 (8) |
| Atrioventricular block with pre-existing ICD | 1 (4) |
| Follow-up (n = 23 patients) | |
| Median follow-up duration, days (inter-quartile range) | 139 (75–245) |
| Freedom of arrhythmia, n (%) | |
| PVC | 5/9 (56) |
| VT | 7/14 (50) |
| Re-do ablation, n (%) | |
| PVC | 1/9 (11) |
| VT | 2/14 (14) |
Variables expressed as n (%) or n ± standard deviation.
B-RFA, bipolar radiofrequency ablation; ICD, implantable cardioverter-defibrillator; PVC, premature ventricular contraction; VA, ventricular arrhythmia; VT, ventricular tachycardia.