title: [Indeterminate form of Chagas' disease. A polymorphic disease].
abstract: OBJECTIVE
  To evaluate the association between the indeterminate form of Chagas' disease and abnormalities in non-invasive cardiovascular propedeutics.
  
  
  METHODS
  Twenty-two patients in the indeterminate form of Chagas' disease, 17 female, with ages between 25 and 50 years were submitted to studies of: vectorcardiography, echocardiography, stress test, dynamic electrocardiography and scintigraphic studies (scintigraphic ventriculography and cardiac mapping with pyrophosphate of technetium), in a period of two months after first consultation.
  
  
  RESULTS
  The analysis shows the percentual of altered exams: vectorcardiogram--68.2% (conduction disturbance--22.7%); echocardiogram--15.8% (apical hypokinesia); cardiac mapping 61.8%; scintigraphic ventriculography--68.2%; stress test--72.2% (reduced delta PS--50%, ventricular arrhythmia--50%); and dynamic electrocardiographic--50% (ventricular arrhythmias). We could observe also that the great majority of the patients has more than three exams altered (63.6%). The study of relation between methods, shows only association between reduced delta PS and ventricular arrhythmia, with concordant results in 72.7%.
  
  
  CONCLUSIONS
  Indeterminate form of Chagas' disease appears to be a really chronic form, may be of attenuate aggressive potential, with indeterminate evolution and with polymorphic clinical exteriorization seeing only through invasive and non invasive propedeutic techniques.
authors: Instituto do Coração do Hospital das Clínicas-FMUSP e Centro de Cardiologia Não Invasiva-São Paulo.
authors: A C
authors: AC
authors: Barretto
authors: L G
authors: LG
authors: Azul
authors: C
authors: C
authors: Mady
authors: B M
authors: BM
authors: Ianni
authors: C
authors: C
authors: De Brito Vianna
authors: G
authors: G
authors: Belloti
authors: F
authors: F
authors: Pileggi
mesh_terms: D000328:Adult; D014355:Chagas Disease / Q000000981:diagnostic imaging / Q000503:physiopathology*; D005260:Female; D006439:Hemodynamics; D006801:Humans; D008297:Male; D008875:Middle Aged; D015635:Radionuclide Ventriculography; D014463:Ultrasonography; D014672:Vectorcardiography
vernacular_title: Forma indeterminada da doença de Chagas. Uma doença polimórfica.