Reassessing the need for primary prevention implantable cardioverter-defibrillators in contemporary patients with heart failure.

The main function of the implantable cardioverter-defibrillator (ICD) is to protect against sudden cardiac death (SCD) due to ventricular tachyarrhythmia (VTA). Current guidelines provide a recommendation to implant a prophylactic ICD for the primary prevention of SCD in individuals having heart failure with reduced ejection fraction (HFrEF) who never experienced a previous sustained VTA. However, these recommendations are based on clinical trials conducted more than 20 years ago and may not be applicable to contemporary patients with HFrEF who have a lower arrhythmic risk as a result of advances in heart failure medical therapies.

Reassessing the need for primary prevention implantable cardioverter-defibrillators in contemporary patients with heart failure.

The main function of the implantable cardioverter-defibrillator (ICD) is to protect against sudden cardiac death (SCD) due to ventricular tachyarrhythmia (VTA). Current guidelines provide a recommendation to implant a prophylactic ICD for the primary prevention of SCD in individuals having heart failure with reduced ejection fraction (HFrEF) who never experienced a previous sustained VTA. However, these recommendations are based on clinical trials conducted more than 20 years ago and may not be applicable to contemporary patients with HFrEF who have a lower arrhythmic risk as a result of advances in heart failure medical therapies.