Table 2.

Electrophysiological Findings

	Effective Ablation (n=31)	Ineffective Ablation/Recurrence (n=9)	P value
Site of origin of PAP arrhythmias			0.16
Left ventricle, n (%)	23 (74)	9 (100)
Anterolateral PAP, n	9	4
Posteromedial PAP, n	16	5
Right ventricle, n (%)	8 (26)	0 (0)
Anterolateral PAP, n	4	0
Posteromedial PAP, n	4	0
Septal muscle, n	1	0
Pleomorphic PVCs, n (%)	26 (84)	5 (56)	0.17
Number of PVC morphology, n	4±3	4±5	0.60
Inducibility of VT, n (%)	4 (13)	0 (0)	0.56
PP at ablation site, n (%)	15 (48)	0 (0)	0.02
S-QRS interval at ablation site	30±14	26±4	0.50
Amplitude during sinus rhythm, mV	1.3±0.9	1.0±0.6	0.50
Activation time, msec	−31±18	−28±7	0.66
Matching pace map, n (%)	22 (71)	2 (22)	0.02
RF induced arrhythmias, n (%)	27 (87)	9 (100)	0.56
Number of RF application, n	27±22	42±19	0.08
Total RF duration, min	22±14	33±9	0.03
Procedure time, min	305±90	387±110	0.03

Values are means±SD. PAP=papillary muscle; PP=Purkinje potential; RF=radiofrequency; PVC=premature ventricular complex; VT=ventricular tachycardia.