Table 3.

Secondary Prevention of SCA. Decision Making on ICD Implantation

Reversible causes of OHCA ICD not primarily recommended	Non-reversible causes of OHCA ICD recommended
Acute myocardial ischemia	LVEF ≤ 35%, not in context of acute ischaemia
Electrolyte disorders in the presence /or not of antiarrhythmic drug therapy proven to be the cause of SCA	LVEF > 35% Grey area Electrophysiology studies potentially helpful Individualised decision for ICD (hypertrophic cardiomyopathy, long QT, etc.)
Arrhythmia related to acquired long QT syndrome Patient must avoid exposure to drugs
Fulminant myocarditis
WPW syndrome as a trigger for VF: ablation