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Updated: May 24, 2026

A New Single Chamber Implantable Defibrillator with Atrial Sensing: A Practical Demonstration of Sensing and Ease of Implantation
Published on: February 28, 2012
Implantable cardioverter defibrillators: risks accompany the life-saving benefits
Brett D Atwater1, James P Daubert
1Electrophysiology Section, Cardiology Division, Department of Medicine, Duke Clinical Research Institute, Duke University Medical Centre, Durham, NC 27710, USA.
Insights
Implantable cardioverter defibrillators (ICDs) save lives from sudden cardiac arrest but have risks. This review balances ICD benefits against their weaknesses and disadvantages.
Area of Science:
- Cardiology
- Medical Devices
- Public Health
Background:
- Sudden cardiac arrest (SCA) is a leading cause of death in developed nations, with hundreds of thousands of cases annually in the USA.
- Antiarrhythmic drugs have proven ineffective in preventing sudden cardiac death.
- The implantable cardioverter defibrillator (ICD) is a validated therapeutic advancement in cardiovascular medicine.
Purpose of the Study:
- To summarize the weaknesses, disadvantages, and risks associated with ICD therapy.
- To provide a balanced perspective on ICDs, considering their proven life-saving benefits.
Main Methods:
- This is a commentary, not a primary research study.
- It synthesizes existing knowledge and clinical experience regarding ICD therapy.
- The review focuses on a balanced assessment of risks versus benefits.
Main Results:
- ICD use has increased significantly but varies geographically and by other measures.
- Potential shortcomings and risks of ICD therapy are gaining attention.
- The commentary aims to present a comprehensive overview of these aspects.
Conclusions:
- ICDs offer significant life-saving benefits for patients at risk of sudden cardiac death.
- A thorough understanding of ICD weaknesses, disadvantages, and risks is crucial.
- Balanced consideration of both benefits and risks is essential for optimal patient care and therapy implementation.
Abstract:
Sudden cardiac arrest is the one of the most common causes of death in developed countries and accounts for between 180,000 and over 450,000 per year in the USA. Antiarrhythmic drug approaches to prevention of sudden cardiac death have been resoundingly ineffective. The implantable cardioverter defibrillator (ICD) constitutes one of the most important and well validated therapeutic advances in modern cardiovascular medicine. Consequently, ICD use has increased exponentially, although implementation has been quite variable geographically and with respect to other measures. In view of the expanded use of ICDs, the potential shortcomings and risks of ICD therapy have attracted attention. This commentary summarises the weaknesses, disadvantages and risks of the ICD in a balanced fashion in light of their proven life-saving benefits.
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