Reduction of Inappropriate Implantable Cardioverter Defibrillator (ICD) Therapies in Primary Prevention Patients

Inclusion Criteria: * Approved indication for new ICD implantation for primary prevention of sudden cardiac death * Age \>=18 Years * Written informed consent Exclusion Criteria: * ICD indication for secondary prevention reasons * ICD indication for "electrical" disorders (i.e. long/short QT syndrome, Brugada syndrome etc...) * ICD change or upgrade * Pregnancy * Nonage * Patient is already participating to another study with active therapy arm * Patient will most likely not be able to participate to the routine follow ups in the study center.