title: Cross-talk in a dual-chamber defibrillator presenting as pacemaker alternans.
abstract: This case report highlights the occurrence of pacemaker alternans in a dual-chamber defibrillator. Pacemaker alternans occurs secondary to cross-talk. The sensing algorithm and basic timing cycles are reviewed.
authors.affiliation: Cardiac Arrhythmia Service, Division of Cardiology, Pittsburgh VA Healthcare System and University of Pittsburgh, Pittsburgh, Pennsylvania 15240, USA. Alaa.Shalaby@med.va.gov
authors.forename: Alaa A
authors.initials: AA
authors.lastname: Shalaby
mesh_terms: D000368:Aged; D000465:Algorithms; D017147:Defibrillators, Implantable / Q000009:adverse effects*; D004562:Electrocardiography; D004868:Equipment Failure; D006801:Humans; D008297:Male; D012804:Sick Sinus Syndrome / Q000628:therapy*; D012815:Signal Processing, Computer-Assisted; D012984:Software; D017180:Tachycardia, Ventricular / Q000628:therapy*