Table 2.

Mapping and ablation of VAs in the transaortic group, transseptal group and trans-DGCV group

Group	Time of earliest ventricular activation preceding QRS onset, ms	Number of similar lead counts between spontaneous PVCs and Pace	RF lesions prior to success	Target site discharge time for PVCs/VT disappearance, s	Ablation time, s	Procedure time, min	X-ray exposure time, min
TA	33.95 ± 5.43a	10.94 ± 1.87†	2.58 ± 1.59a	7.4 ± 3.4 a	139.9 ± 32.4*	70.23 ± 22.95a	9.41 ± 3.92a
TS	28.23 ± 2.26	6.67 ± 4.56	5.94 ± 3.28	10.7 ± 5.2	366.9 ± 78.4	85.68 ± 21.94	19.08 ± 3.36
TGCV	35.54 ± 6.44	11.5 ± 0.7	2.08 ± 1.23a	7.5 ± 3.1a	289.4 ± 58.4‡	70.61 ± 21.85a	10.19 ± 3.94a

Data are presented as mean + SD or n (%). Annotation: TA = Transaortic group, TS = Transseptal group, TGCV Trans-DGCV group. Compared with TS, ^a P < 0.01, ^† P < 0.05; and compared with TGCV, ^‡ P < 0.01