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Updated: Dec 17, 2025

A New Single Chamber Implantable Defibrillator with Atrial Sensing: A Practical Demonstration of Sensing and Ease of Implantation
Published on: February 28, 2012
Double chamber cross-talk, the ultimate double-cross
Fahad Almehmadi1,2, Stephen Duffett1,3, Habib R Khan1
1Heart Rhythm Program, London Health Sciences Centre, University of Western Ontario, London, Ontario, Canada.
Abstract:
Cross-talk is a well-described phenomenon in a dual-chamber cardiovascular implantable electronic device. Far-field ventricular events are more commonly sensed in the atrial channel, the reverse is uncommon, and seeing both at the same time has never been reported. We present a case of double cross-talk in a dual-chamber Medtronic ® implantable cardioverter-defibrillator. In this report, we decipher an unusual device response to the cross-talk and describe the programming changes required to resolve it.
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