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Updated: Jun 6, 2026

A New Single Chamber Implantable Defibrillator with Atrial Sensing: A Practical Demonstration of Sensing and Ease of Implantation
Published on: February 28, 2012
Use of implantable cardioverter-defibrillators
1Cardiology Division, New York Medical College, Macy Pavilion, Room 138, Valhalla, NY 10595, USA. wsaronow@aol.com
Insights
The implantable cardioverter-defibrillator (ICD) offers effective treatment for life-threatening arrhythmias. Guidelines recommend biventricular pacing and specific medications for patients with ICDs.
Area of Science:
- Cardiology
- Medical Devices
- Electrophysiology
Background:
- Implantable cardioverter-defibrillators (ICDs) are crucial for managing life-threatening ventricular arrhythmias.
- Identifying appropriate patient populations and treatment protocols is essential for optimal outcomes.
Purpose of the Study:
- To discuss American College of Cardiology/American Heart Association class I and IIa indications for ICD implantation.
- To provide recommendations for pacing and pharmacologic therapy in patients with ICDs.
Main Methods:
- Review of current clinical guidelines and evidence regarding ICD therapy.
- Analysis of indications, pacing strategies, and medication management for ICD patients.
Main Results:
- ICDs are the most effective treatment for specific life-threatening ventricular tachyarrhythmias.
- Biventricular pacing is recommended over dual-chamber rate-responsive pacing for ICD patients requiring pacing.
- Pharmacologic management should include beta-blockers, statins, and ACE inhibitors or ARBs.
Conclusions:
- Adherence to established guidelines ensures appropriate ICD use.
- Optimized pacing and medical therapy enhance the efficacy and safety of ICD treatment.
- Comprehensive management strategies improve outcomes for patients with life-threatening arrhythmias.
Abstract:
The implantable cardioverter-defibrillator (ICD) is the most effective treatment for patients with life-threatening ventricular tachycardia or ventricular fibrillation not due to reversible causes. The American College of Cardiology/American Heart Association class I and IIa indications for an ICD are discussed. Patients with ICDs who need pacing should be treated with biventricular pacing, not with dual-chamber rate-responsive pacing, at a rate of 70/min. Patients with ICDs should be treated with β-blockers, statins and angiotensin-converting enzyme inhibitors or angiotensin receptor blockers.
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