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Primary prevention implantable cardioverter-defibrillator use in non-ischemic dilated cardiomyopathy based on

Ahmed Muhammed1, Mohamed Abdelazeem2,3,4, Mohamed Gamaleldin Elewa2

  • 1Cardiology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt. ahmedmustafa@med.asu.edu.eg.

Heart Failure Reviews
|May 19, 2022
PubMed

Insights

Primary prevention implantable cardioverter-defibrillators (ICDs) reduce sudden cardiac death (SCD) in dilated cardiomyopathy (DCM). A multiparametric approach improves risk stratification beyond ejection fraction for optimal ICD benefit.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Heart Failure Management

Background:

  • Dilated cardiomyopathy (DCM) patients face risks of sudden cardiac death (SCD) and ventricular arrhythmias.
  • Advances in pharmacological and non-pharmacological treatments have reduced these risks.
  • Current risk stratification for primary prevention implantable cardioverter-defibrillator (ICD) implantation in DCM is challenging, with left ventricular ejection fraction (LVEF) alone being insufficient.

Purpose of the Study:

  • To review current evidence on primary prevention ICD implantation in DCM.
  • To update on arrhythmic risk stratification and left ventricular reverse remodeling (LVRR) prediction.
  • To propose a multiparametric algorithm for improved patient selection for primary prevention ICDs.

Main Methods:

  • Literature review of current evidence and guideline recommendations.
  • Analysis of risk stratification strategies for SCD in DCM.
  • Evaluation of LVRR prediction as a factor in ICD decision-making.

Main Results:

  • LVEF alone is insufficient for accurate arrhythmic risk stratification in DCM.
  • Multiparametric approaches incorporating LVRR prediction may enhance patient selection for ICDs.
  • Recent guidelines offer recommendations for primary prevention ICD implantation in DCM.

Conclusions:

  • Improved risk stratification is crucial for optimizing primary prevention ICD use in DCM.
  • A proposed multiparametric algorithm aims to better identify DCM patients who will benefit from ICDs.
  • Further research may refine strategies for preventing SCD in DCM.

Keywords:
Implantable cardioverter defibrillatorNon-ischemic dilated cardiomyopathySudden cardiac death

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