title: Ectopic positioning of pacemaker electrode.
abstract: The present case reports on a patient presenting the cardiac form of Chagas disease, with left ventricular dysfunction and second-degree atrioventricular block Mobitz type II, associated with several syncope episodes. The patient underwent a double-chamber definitive artificial pacemaker implant. One year after the implant, the displacement of the atrial electrode was diagnosed and the patient was submitted to re-implantation of the atrial electrode. Two years after the first surgical procedure, the patient presented dyspnea on exertion. The physical evaluation included an echocardiogram, which detected the presence of a foreign body with metallic characteristics in the left cardiac chambers, consistent with that of an ectopic pacemaker electrode.
authors.affiliation: Hospital Universitário Professor Edgard Santos, Universidade Federal da Bahia, Salvador, BA, Brasil. gildomota@cardiol.br
authors.forename: Gildo
authors.initials: G
authors.lastname: Mota
authors.forename: Juliana
authors.initials: J
authors.lastname: Prazeres
authors.forename: Nelmacy
authors.initials: N
authors.lastname: Freitas
authors.forename: Luiz
authors.initials: L
authors.lastname: Magalhães
authors.forename: Francisco
authors.initials: F
authors.lastname: Reis
authors.forename: Roque
authors.initials: R
authors.lastname: Aras
mesh_terms: D000328:Adult; D054537:Atrioventricular Block / Q000628:therapy; D002598:Chagas Cardiomyopathy / Q000000981:diagnostic imaging / Q000628:therapy*; D004567:Electrodes, Implanted / Q000009:adverse effects*; D005548:Foreign-Body Migration / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D010138:Pacemaker, Artificial / Q000009:adverse effects*; D012086:Reoperation / Q000009:adverse effects; D014463:Ultrasonography; D018487:Ventricular Dysfunction, Left / Q000209:etiology