title: Electrophysiologic study in chronic Chagas' heart disease.
abstract: Cardiac arrhythmias are common in chagasic patients. Electrophysiologic study is an invasive procedure for the investigation of sinus node function, atrioventricular node conduction and intraventricular (His-Purkinje) conduction and the mechanism of tachycardias. It is useful in elucidating syncope, dizziness and tachycardiac palpitations that remain unexplained by non-invasive diagnostic methods. It is fundamental in directing non-pharmacological therapy, especially in "sudden death" survivors. Chagasic patients may benefit from electrophysiologic study after a critical clinical evaluation.
authors.affiliation: Heart Institute, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, Brazil.
authors.forename: M
authors.initials: M
authors.lastname: Scanavacca
authors.forename: E
authors.initials: E
authors.lastname: Sosa
mesh_terms: D001145:Arrhythmias, Cardiac / Q000175:diagnosis* / Q000209:etiology / Q000628:therapy; D002598:Chagas Cardiomyopathy / Q000503:physiopathology* / Q000628:therapy; D002908:Chronic Disease; D004594:Electrophysiology; D006801:Humans