TABLE 2.

Applied matching factors.

Parameter type	Subgroup options
Etiology of cardiomyopathy*	ICM
	NICM
	ACM
Age*
Gender*
BMI
LVEF*
NYHA group*
Ventricular arrhythmia presentations*	Sustained ventricular tachycardia incessant sustained ventricular tachycardia electrical storm
Arrhythmogenic focus anatomical intracardiac location	Based on VE exit by ECG and by the activation map of VT
Diagnostic tools used for scar definition	CT
	MR
	EAM
	ECG
TA volume*	Endocardial electroanatomic substrate mapping area/volume in all cases; epicardial mapping area/volume in the case of 3D epicardial electroanatomic substrate mapping
Heart volume	cc range
Heart-to-TA volume	cc range
Previous use of amiodaron	Y/N
Number of previous RFA attempts*
Type of previous RFA attempts	endocardial
	epicardial
Unfeasibility to repeat RFA	Y/N
Local recurrence of TA (same area of last RFA)	Y/N
Previous percutaneous stellate ganglion blockade	Y/N

TA, target area by electroanatomical mapping; BMI, body mass index; RFA, radiofrequency ablation; LVEF, left ventricle ejecting fraction; *mandatory matching factor.