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Updated: Aug 18, 2026

A New Single Chamber Implantable Defibrillator with Atrial Sensing: A Practical Demonstration of Sensing and Ease of Implantation
Published on: February 28, 2012
Unipolar defibrillator?
1Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia 19104, USA.
Abstract:
An unusual case of "unipolar" pacing and myopotential over-sensing leading to an inappropriate ICD shock in a patient with an implanted defibrillator is reported. The reasons for unipolar behavior in a system using a committed bipolar device are discussed.
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