'Sinus node' dysfunction associated with left atrial isomerism.
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.
Ferrero
Paolo
P
Cardiology, Faculty of Medicine, University of Turin, San Giovanni Battista Hospital, Turin, Italy. ferpaolo77@libero.it
Massa
Riccardo
R
Amellone
Claudia
C
Trevi
Giampaolo
G
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