title: [Difficult AV optimization in a patient with a biventricular implantable cardioverter defibrillator].
abstract: This quiz presents the case of a patient who deteriorated clinically after AV delay optimization of a biventricular implantable cardioverter defibrillator. It illustrates that these complex devices require profound knowledge of their function.
authors.affiliation: J.-W.-Goethe Universitätsklinik, Medizinische Klinik III-Kardiologie, Theodor-Stern-Kai 7, 60590, Frankfurt, Germany.
authors.forename: C W
authors.initials: CW
authors.lastname: Israel
authors.forename: J R
authors.initials: JR
authors.lastname: Ehrlich
authors.forename: M
authors.initials: M
authors.lastname: Britten
mesh_terms: D000368:Aged; D001145:Arrhythmias, Cardiac / Q000517:prevention & control*; D017147:Defibrillators, Implantable / Q000009:adverse effects*; D004554:Electric Countershock / Q000009:adverse effects* / Q000379:methods*; D005260:Female; D006333:Heart Failure / Q000209:etiology* / Q000517:prevention & control*; D006801:Humans; D011785:Quality Assurance, Health Care / Q000379:methods