Table 1 Task force criteria for diagnosis of arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D).

		Major criteria	Minor criteria
1	Global and/or regional dysfunction and structural alterations	Severe RV dilatation and reduction of RVEF with no (or mild) impairment in LVEF	Mild global RV dilatation and/or reduction in RVEF with normal LVEF
		Localised RV aneurysms (dyskinetic areas)	Mild segmental RV dilatation
		Severe segmental RV dilatation	Regional RV hypokinesia
2	Tissue characterisation of walls	Fibrofatty replacement of myocardium on endomyocardial biopsy
3	Repolarisation abnormalities		Inverted T waves in right precordial leads (V2 and V3) (in absence of RBBB)
4	Depolarisation/conduction abnormalities	Epsilon waves or localised prolongation (>110 ms) of the QRS complex in right precordial leads (V1–V3)	Late potentials (signal averaged ECG)
5	Arrhythmias		LBBB type (non‐)sustained ventricular tachycardia
			Frequent ventricular extrasystoles (more than 1000/24 h)
6	Family history	Familial disease confirmed at necropsy or surgery	Familial history of premature sudden death (<35 years) due to suspected RV dysplasia
			Familial history (clinical diagnosis based on present criteria)

LBBB, left bundle branch block; LV, left ventricular; LVEF, left ventricular ejection fraction; RBBB, right bundle branch block; RV, right ventricular; RVEF, right ventricular ejection fraction.

Adapted from Furuno et al.¹³