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Updated: Feb 14, 2026

A New Single Chamber Implantable Defibrillator with Atrial Sensing: A Practical Demonstration of Sensing and Ease of Implantation
Published on: February 28, 2012
Should Single-Coil Implantable Cardioverter Defibrillator Leads Be Used in all Patients?
Fahad Almehmadi1, Jaimie Manlucu1
1Division of Cardiology, Department of Medicine, Western University, PO Box 5339, 339 Windermere Road, Room B6-127, London, Ontario N6A 5A5, Canada.
Abstract:
The historical preference for dual-coil implantable cardioverter defibrillator leads stems from high defibrillation thresholds associated with old device platforms. The high safety margins generated by contemporary devices have rendered the modest difference in defibrillation efficacy between single- and dual-coil leads clinically insignificant. Cohort data demonstrating worse lead extraction outcomes and higher all-cause mortality have brought the incremental utility of an superior vena cava coil into question. This article summarizes the current literature and re-evaluates the utility of dual-coil leads in the context of modern device technology.
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