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Updated: May 17, 2026

A New Single Chamber Implantable Defibrillator with Atrial Sensing: A Practical Demonstration of Sensing and Ease of Implantation
Published on: February 28, 2012
The subcutaneous implantable cardioverter-defibrillator: should patients want one?
1Minneapolis Heart Institute, Abbott Northwestern Hospital, Minneapolis, Minnesota 55356, USA. rhauser747@aol.com
Abstract:
The subcutaneous implantable cardioverter-defibrillator is a novel device that does not require insertion of a transvenous lead; rather, it delivers 80-J transthoracic shocks via a subcutaneous pulse generator implanted in the left lateral chest and a subcutaneous left parasternal lead-electrode. It recently received approval by U.S. Food and Drug Administration panel on the basis of a 180-day study in 330 patients. However, it has not been shown to be non inferior to current implantable cardioverter-defibrillators, and it does not provide either anti-tachycardia or bradycardia pacing. Thus, is this technology ready for widespread application? Specifically, should a patient want one?
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