title: Inappropriate tachycardia detection by a biventricular implantable cardioverter defibrillator.
abstract: This case describes "double counting" of intrinsic conduction due to the combination of intraventricular conduction delay and the merging of the electrograms from the right and left ventricle (coronary sinus) leads in a biventricular cardioverter defibrillator. This situation prompted asymptomatic antitachycardia pacing. Lengthening of AV conduction by betablocker solved the problem.
authors.affiliation: Arrhythmia Section, Cardiovascular Institute, Hospital Clínic, University of Barcelona, Barcelona, Spain.
authors.forename: Emilio
authors.initials: E
authors.lastname: Garcia-Moran
authors.forename: Lluís
authors.initials: L
authors.lastname: Mont
authors.forename: Josep
authors.initials: J
authors.lastname: Brugada
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000627:therapeutic use; D000368:Aged; D017298:Bisoprolol / Q000627:therapeutic use; D017147:Defibrillators, Implantable; D004562:Electrocardiography; D004868:Equipment Failure; D006801:Humans; D008297:Male; D017180:Tachycardia, Ventricular / Q000175:diagnosis* / Q000188:drug therapy
chemical_list: D000319:Adrenergic beta-Antagonists; D017298:Bisoprolol