Table 2.

Procedure results in congenital heart disease: RMN vs. CVN

Parameters	RMN	CVN	P-value
N	18	13	0.369
Ebstein’s anomaly (N, %)	2 (11 %)	6 (46 %)	0.028*
Tetralogy of Fallot (N, %)	2 (11 %)	2 (15 %)	0.726
Corrected TGA (N, %)	5 (28 %)	1 (8 %)	0.164
Post Fontan procedure (N, %)	4 (22 %)	2 (15 %)	0.634
Ventricular septal defect (N, %)	2 (11 %)	2 (15 %)	0.726
Previous cardiac surgery (N, %)	16 (89 %)	7 (54 %)	0.030*
Previous ablation (N, %)	5 (28 %)	2 (15 %)	0.423
Targeted arrhythmia
Atrial tachycardia (N, %)	6 (33 %)	7 (54 %)	0.253
Ventricular tachycardia (N, %)	3 (17 %)	1 (8 %)	0.462
Ventricular extrasystoles (N, %)	4 (22 %)	0 (0 %)	0.069
AVNRT (N, %)	2 (11 %)	0 (0 %)	0.214
AVRT (N, %)	1 (6 %)	5 (38 %)	0.022*
Atrial fibrillation (N, %)	1 (6 %)	0 (0 %)	0.388
Atrial flutter (N, %)	1 (6 %)	0 (0 %)	0.388
Procedure parameters
General anaesthesia (N, %)	15 (83 %)	10 (77 %)	0.661
Pre-ablation imaging (N)	6 CMR, 3 CT	1 CMR	0.453
Median procedure time (min, 1–3 IQR)	186 (154, 264)	203 (130, 223)	0.674
Median fluoroscopy time (min, 1–3 IQR)	3.7 (2.3, 6.2)	4.1 (3.3, 11)	0.123
Median radiofrequency time (min, 1–3 IQR)	18.2 (9.4, 24.6)	12.2 (11, 22.4)	0.603
Acute success	94 %	100 %	0.395
Arrhythmia-free follow-up	67 %	62 %	0.873
Redo ablation (N,%)	4 (22 %)	1 (8 %)	0.286

Table with the procedure results of the subgroup analysis of patients with congenital heart disease. SD standard deviation, TGA transposition of the great arteries, AVRT atrioventricular reentrant tachycardia, AVNRT atrioventricular nodal reentrant tachycardia, CMR cardiac magnetic resonance imaging, CT computed tomography scan; min: minutes, IQR interquartile range, arrhythmia-free follow-up: six-month follow-up

^*statistically significant