Implantable Cardioverter Defibrillator for the Primary Prevention of Sudden Cardiac Death in Patients With Nonischemic Cardiomyopathy

Rafael Cavalcanti, Nael Aboul-Hosn, Gustavo Morales, Ahmed Abdel-Latif

Research output: Contribution to journalReview articlepeer-review

4 Scopus citations


Objectives: The benefit of implanting patients with nonischemic cardiomyopathy (NICMP) with an implantable cardioverter defibrillator (ICD) for primary prevention has not been demonstrated in any randomized controlled trial. This also holds true for the most recent study on the subject. This systematic review and meta-analysis aims to examine the effectiveness of primary prevention using an ICD in the NICMP population. Methods: We searched the literature for randomized controlled trials examining the effectiveness of ICD in reducing all-cause mortality in patients with NICMP. The primary outcome of our analysis was all-cause mortality. A fixed-effects model was used for the primary analysis. Results: A total of 5 randomized controlled trials focused on primary prevention of sudden cardiac death for patients with NICMP that met our inclusion and exclusion criteria. They have individually failed to consistently show a benefit for the use of an ICD in this population. However, the cumulative effect of ICD implantation in patients with NICMP demonstrated a 21% relative risk reduction in mortality (Relative risk [RR]: 0.79; confidence interval: 0.66-0.95). Conclusion: There is a decrease in mortality with the use of ICD for primary prevention in patients with NICMP having left ventricular ejection fraction <35%.

Original languageEnglish
Pages (from-to)297-302
Number of pages6
Issue number4
StatePublished - Apr 1 2018

Bibliographical note

Funding Information:
The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: Dr Abdel-Latif is supported by the University of Kentucky COBRE Early Career Program (P20 GM103527).

Publisher Copyright:
© 2017, © The Author(s) 2017.


  • ICD
  • implantable cardioverter defibrillator
  • nonischemic cardiomyopathy
  • primary prevention
  • sudden cardiac death

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine


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