Table 2.

Primary and safety outcomes of study groups

Primary Outcomes- Freedom from PVC
Region / Earliest Site	Sandwich Ablation Group	Conventional Ablation Group	p -value
RVOT	100.0% (25/25)	82.1% (23/28)	0.052
LVOT (total)	93.3% (56/60)	76.8% (43/56)	0.017
•Aortic cusps	95.5% (21/22)	85.7% (18/21)	0.344
• LV summit,	91.7% (22/24)	65.2% (15/23)	0.036
• Subvalvular LVOT	92.9% (13/14)	83.3% (10/12)	0.583
Others (Parahisian, Crux)	91.7% (11/12)	76.9% (10/13)	0.593
Total	94.8% (92/97)	78.4% (76/97)	0.001
Safety Outcomes- Complications
Complication	Sandwich Ablation Group	Conventional Ablation Group	p -value
Pericardial tamponade	1 (1.0%)	1 (1.0%)	1.0
Coronary artery injury	0 (0.0%)	0 (0.0%)	1.0
Steam pop	2 (2.1%)	1 (1.0%)	1.0
High-grade AV block	0 (0.0%)	0 (0.0%)	1.0
Vascular complication	3 (3.1%)	2 (2.1%)	1.0
Procedure-related death	0 (0.0%)	0 (0.0%)	1.0
Total complications	5 (5.1%)	3 (3.1%)	0.718

PVC = premature ventricular complex. Freedom from PVC was defined as absence of clinical recurrence or burden > 1% at 6-month follow-up based on ECG or Holter monitoring