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Updated: Aug 17, 2026

A New Single Chamber Implantable Defibrillator with Atrial Sensing: A Practical Demonstration of Sensing and Ease of Implantation
16:40

A New Single Chamber Implantable Defibrillator with Atrial Sensing: A Practical Demonstration of Sensing and Ease of Implantation

Published on: February 28, 2012

[Long-lasting survival of patients with implantable cardioverter-defibrillators implanted for secondary preventive

M Kozák1, M Sepsi, J Vlasínová

  • 1Interní kardiologická klinika FN, Brno. kozak.milan@post.cz

Casopis Lekaru Ceskych
|July 15, 2005
PubMed

Insights

Implantable cardioverter-defibrillator (ICD) therapy outcomes are worse for patients with coronary artery disease, especially when revascularization is not possible before ICD implantation. Terminal heart failure, not sudden death, was the primary cause of mortality in this long-term study.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Medical Device Therapy

Context:

  • Effectiveness of implantable cardioverter-defibrillators (ICDs) is typically assessed by overall patient mortality.
  • Long-term outcomes and mortality patterns in ICD recipients require ongoing investigation.
  • Understanding the impact of specific diagnoses and interventions on ICD patient survival is crucial.

Purpose:

  • To analyze the long-term total mortality of patients receiving implantable cardioverter-defibrillators (ICDs).
  • To evaluate mortality rates based on primary cardiac diagnoses in ICD patients.
  • To assess the influence of revascularization procedures on mortality in patients with coronary artery disease (CAD) who have ICDs.

Summary:

  • This study followed 138 patients with ICDs for malignant ventricular arrhythmias, observing a 22% overall mortality rate over a mean of 47.35 months.
  • Terminal heart failure was the predominant cause of death (84%), with no sudden cardiac deaths recorded.
  • Patients with coronary artery disease (CAD) exhibited higher mortality (27%), particularly those ineligible for pre-ICD revascularization (38% vs. 20%).

Impact:

  • ICD patient survival is significantly reduced when coronary artery disease is present and revascularization is not feasible prior to implantation.
  • Findings highlight the importance of considering revascularization status in risk stratification for ICD patients with CAD.
  • The study underscores that terminal heart failure is a major concern in long-term ICD therapy, necessitating tailored management strategies.
Abstract

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