title: Two Cases of Ventricular Proarrhythmia from Automatic Threshold Measurement Features in a CRTD and an ICD.
abstract: The present case report presents two cases in which automatic threshold measurement features in an implantable cardiac defibrillator and in a CRTD act proarrhythmic by inducing polymorphic ventricular arrhythmia. By programming these features off the problem was solved. The mechanisms seem to be different from previously reported proarrhythmic interactions from such device features.
authors.affiliation: Department of Cardiology, Section for Pacing and Electrophysiology, Aarhus University Hospital Skejby, Aarhus, Denmark.
authors.forename: Jens
authors.initials: J
authors.lastname: Kristensen
authors.affiliation: Department of Cardiology, Section for Pacing and Electrophysiology, Aarhus University Hospital Skejby, Aarhus, Denmark.
authors.forename: Christian
authors.initials: C
authors.lastname: Gerdes
authors.affiliation: Department of Cardiology, Section for Pacing and Electrophysiology, Aarhus University Hospital Skejby, Aarhus, Denmark.
authors.forename: Jens Cosedis
authors.initials: JC
authors.lastname: Nielsen
mesh_terms: D058406:Cardiac Resynchronization Therapy / Q000009:adverse effects*; D017147:Defibrillators, Implantable / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013575:Syncope / Q000209:etiology*; D017180:Tachycardia, Ventricular / Q000209:etiology*; D014693:Ventricular Fibrillation / Q000209:etiology*
keywords: biventricular pacing/defibrillation; ventricular tachycardia/fibrillation