Table 2.

Indication to ICD implantation in HF patients. COR: Class of Recommendation.

2012 ACC/AHA/HRS Guidelines for Device-Based Therapy of Cardiac Rhythm Abnormalities	COR-LOE
Ischemic DCM (at least 40 days post-MI), LVEF less than or equal to 35%, NYHA functional Classes II or III	I-A
Non-ischemic DCM, LVEF less than or equal to 35%, NYHA functional Classes II or III	I-B
Ischemic DCM (at least 40 days post-MI) LVEF less than or equal to 35%, NYHA functional Class I	I-A
2013 ACCF/AHA Guideline for the Management of Heart Failure
HFrEF (irrespective of etiology, but in case of ischemic etiology at least 40 days post-MI), LVEF less or equal to 35%, NYHA Classes II or III	I-A
HFrEF (irrespective of etiology, but in case of ischemic etiology at least 40 days post-MI), LVEF less or equal to 30%, NYHA Class I	I-B
2015 ESC Guidelines for the management of patients with ventricular arrhythmias and the prevention of sudden cardiac death
Ischemic HFrEF (at least 6 weeks after myocardial infarction), LVEF less or equal to 35%, NYHA Classes II or III	I-A
Non ischemic HFrEF, LVEF less or equal to 35%, NYHA Classes II or III	I-B
Patients who are listed for heart transplant	IIa-C
2016 ESC Guidelines for the diagnosis and treatment of acute and chronic heart failure
Ischemic HFrEF, LVEF less or equal to 35%, NYHA Classes II or III	I-A
Non-ischemic HFrEF, LVEF less or equal to 35%, NYHA Classes II or III	I-B

DCM: Dilated Cardiomyopathy; HFrEF: Heart Failure Reduced Ejection Fraction; LOE: Level of Evidence; LVEF: Left Ventricular Ejection Fraction; NYHA: New York Heart Association.