Right ventricular doppler echocardiographic study of indeterminate form of Chagas disease
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Data
2015
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Background: Patients with indeterminate form of Chagas disease/cardiac normality (ICD/CN) exhibited normal
electrocardiograms and chest X-rays; however, more sophisticated tests detected some degree of morphological and
functional changes in the heart.
Objective: To assess the prevalence of systolic and diastolic dysfunction of the right ventricle (RV) in patients with ICD/CN.
Methods: This was a case–control and prevalence study. Using Doppler two-dimensional echocardiography (2D),
92 patients were assessed and divided into two groups: group I (normal, n = 31) and group II (ICD/CN, n = 61).
Results: The prevalence of RV systolic dysfunction in patients in groups I and II was as follows: fractional area change
(0.0% versus 0.6%), mobility of the tricuspid annulus (0.0% versus 0.0%), and S-wave tissue Doppler (6.4% versus
26.0%, p = 0.016). The prevalence of global disorders such as the right myocardial performance index using tissue
Doppler (16.1% versus 27.8%, p = 0.099) and pulsed Doppler (61.3% versus 68%, p = 0.141) and diastolic disorders
such as abnormal relaxation (0.0% versus 6.0%), pseudonormal pattern (0.0% versus 0.0%), and restrictive pattern
(0.0% versus 0.0%) was not statistically different between groups.
Conclusion: The prevalence of RV systolic dysfunction was estimated to be 26% (S wave velocity compared with
other variables), suggesting incipient changes in RV systolic function in the ICD/CN group.
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Palavras-chave
Chagas disease, Ventricular dysfunction right, Echocardiography, Doppler
Citação
FURTADO, Rogério Gomes et al. Right ventricular doppler echocardiographic study of indeterminate form of Chagas disease. Arquivos Brasileiros de Cardiologia, São Paulo, v. 104, n. 3, p. 209, 2015.