Key result
Decreasing atrial sensitivity abolishes inappropriate dual-chamber ICD therapies driven by far-field R-wave oversensing.
Why the study?
Far-field oversensing of ventricular beats in the atrial channel of new dual chamber ICDs can cause inappropriate atrial therapies, but detailed descriptions are limited.
Population
A patient with a new dual chamber implantable cardioverter defibrillator
Comparison
Atrial therapies induced by far-field R wave oversensing vs appropriate sensing
Design
Case report
Authors
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May prompt atrial sensitivity adjustment to avert inappropriate therapies; this case leaves open prospective validation in dual-chamber ICDs.
Case Report (n=1)
Far-field R wave oversensing in dual chamber ICDs can lead to inappropriate atrial therapies and proarrhythmia, which can be managed by adjusting atrial sensitivity.
Wolpert et al. (1998) conducted a case report in Inappropriate atrial therapies (n=1). Dual chamber implantable cardioverter defibrillator was evaluated. A dual chamber defibrillator delivered inappropriate atrial therapies during sinus tachycardia due to far-field R wave oversensing, which was abolished by decreasing atrial sensitivity.
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