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.
Vollmann
Dirk
D
Department of Cardiology and Pneumology, Georg-August-University, Göttingen, Germany. DirkVollmann2000@aol.com
Lüthje
Lars
L
Görtler
Georg
G
Unterberg
Christina
C
D000368:Aged; D001281:Atrial Fibrillation / Q000175:diagnosis*; D001919:Bradycardia / Q000628:therapy*; D002036:Bundle of His / Q000601:surgery; D002304:Cardiac Pacing, Artificial; D017115:Catheter Ablation; D017147:Defibrillators, Implantable / Q000009:adverse effects*; D004562:Electrocardiography; D004868:Equipment Failure; D005260:Female; D006325:Heart Atria; D006801:Humans; D013610:Tachycardia / Q000601:surgery; D014693:Ventricular Fibrillation / Q000175:diagnosis*