Key result
Reduction of ventricular sensitivity resolved asystolic ventricular pauses and inappropriate detection of ventricular fibrillation due to far-field oversensing in a patient with a triple chamber ICD.
Case Report (n=1)
Far-field oversensing of atrial fibrillation can cause inappropriate ICD therapy and asystolic pauses in patients with triple chamber ICDs, which can be resolved by reducing ventricular sensitivity.
May guide sensitivity adjustment in similar ICD cases; single-case evidence leaves broader applicability open.
VOLLMANN, D., et al. : Inhibition of Bradycardia Pacing and Detection of Ventricular Fibrillation Due to Far‐Field Atrial Sensing in a Triple Chamber Implantable Cardioverter Defibrillator. Oversensing of intracardiac signals or myopotentials may cause inappropriate ICD therapy. Reports on far‐field sensing of atrial signals are rare, and inappropriate ICD therapy due to oversensing of atrial fibrillation has not yet been described. This report presents a patient with a triple chamber ICD and a history of His‐bundle ablation who experienced asystolic ventricular pauses and inappropriate detection of ventricular fibrillation due to far‐field oversensing of atrial fibrillation. Several factors contributed to the complication, which resolved after reduction of the ventricular sensitivity.
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Vollmann et al. (2002) conducted a case report in Inappropriate ICD therapy due to far-field oversensing of atrial fibrillation (n=1). Reduction of ventricular sensitivity was evaluated on Resolution of complication. Reduction of ventricular sensitivity resolved asystolic ventricular pauses and inappropriate detection of ventricular fibrillation due to far-field oversensing in a patient with a triple chamber ICD.
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