Inappropriate shock delivery due to ventricular double detection with a biventricular pacing implantable cardioverter defibrillator.
This report describes a patient with advanced heart failure, pronounced intraventricular conduction delay, and ventricular tachycardias who underwent implantation of a multisite pacing ICD. Pacing leads were placed in the right atrium, right ventricular apex, and to the left ventricular posterior wall via a coronary sinus vein. The system proved to have correct sensing and pacing function in an atrial synchronized biventricular pacing mode and an appropriate detection of ventricular fibrillation. However, 1 month after implantation the patient received an inappropriate shock delivery due to double detection of ventricular premature beats. The inherent detection problem of dual ventricular sensing is discussed.
Schreieck
J
J
Deutsches Herzzentrum and 1. Medizinische Klinik, Klinikum rechts, Isar Technische Universität München, Munich, Germany. schreieck@dhm.mhn.de
Zrenner
B
B
Kolb
C
C
Ndrepepa
G
G
Schmitt
C
C
D017147:Defibrillators, Implantable / Q000009:adverse effects*; D004867:Equipment Design; D004868:Equipment Failure; D006801:Humans; D008297:Male; D008875:Middle Aged; D017180:Tachycardia, Ventricular / Q000628:therapy*