title: Sinus node dysfunction in a patient with left atrial isomerism.
abstract: We report the case of an asymptomatic six-year-old child with left atrial isomerism and sinus venosus atrial septal defect. The physical examination revealed several periods of bradycardia. During a 24-hour electrocardiographic monitoring the patient presented a significant sinus node dysfunction with sinus pauses of up to 2.4 seconds. A permanent pacemaker was implanted, with a satisfactory outcome.
authors.affiliation: Faculdade de Medicina de São José do Rio Preto, São José do Rio Preto, SP, Brazil. siriohassem@cardiol.br
authors.forename: Sírio
authors.initials: S
authors.lastname: Hassem Sobrinho
authors.forename: Airton Camacho
authors.initials: AC
authors.lastname: Moscardini
authors.forename: Ulisses Alexandre
authors.initials: UA
authors.lastname: Croti
authors.forename: Carlos Henrique
authors.initials: CH
authors.lastname: de Marchi
authors.forename: Moacir Fernandes
authors.initials: MF
authors.lastname: de Godoy
mesh_terms: D002304:Cardiac Pacing, Artificial; D002648:Child; D005260:Female; D006325:Heart Atria / Q000002:abnormalities; D006344:Heart Septal Defects, Atrial / Q000150:complications* / Q000503:physiopathology; D006801:Humans; D012849:Sinoatrial Node / Q000503:physiopathology* / Q000601:surgery; D016896:Treatment Outcome