title: 'Sinus node' dysfunction associated with left atrial isomerism.
abstract: BACKGROUND
  The eterotaxic syndromes encompass two main anatomic pictures: left and right atrial isomerism. They cause a distortion of the atria anatomy that may involve the conduction tissue. The prognosis is related to the severity of the intracardiac-associated defects.
  
  
  METHODS
  We describe the case of a patient suffering from asymptomatic 'sinus' bradycardia since childhood, who was referred for pacemaker implantation, in which the diagnosis of left atrial isomerism was made.
  
  
  CONCLUSIONS
  The present paper may provide new insights on the clinical course of arrhythmic disorders, in particular among patients with congenital heart disease.
authors.affiliation: Cardiology, Faculty of Medicine, University of Turin, San Giovanni Battista Hospital, Turin, Italy. ferpaolo77@libero.it
authors.forename: Paolo
authors.initials: P
authors.lastname: Ferrero
authors.forename: Riccardo
authors.initials: R
authors.lastname: Massa
authors.forename: Claudia
authors.initials: C
authors.lastname: Amellone
authors.forename: Giampaolo
authors.initials: G
authors.lastname: Trevi
mesh_terms: D001017:Aortic Coarctation / Q000150:complications / Q000601:surgery; D001021:Aortic Valve / Q000601:surgery; D001146:Arrhythmia, Sinus / Q000175:diagnosis / Q000209:etiology* / Q000628:therapy; D001919:Bradycardia / Q000175:diagnosis / Q000209:etiology* / Q000628:therapy; D004452:Echocardiography; D004562:Electrocardiography; D006325:Heart Atria / Q000002:abnormalities* / Q000000981:diagnostic imaging; D019918:Heart Valve Prosthesis Implantation; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial; D011379:Prognosis; D014057:Tomography, X-Ray Computed