Why the study?
Do electrocardiographic ventricular repolarization parameters predict asymptomatic left ventricular systolic dysfunction in adult outpatients with chronic Chagas' disease?
Population
738 adult outpatients in the chronic phase of Chagas' disease
Design
Cross-sectional
Authors
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QTd >60 ms was associated with LV dysfunction in Chagas patients; leaves open its value for screening pending prospective validation.
Do electrocardiographic ventricular repolarization parameters predict asymptomatic left ventricular systolic dysfunction in adult outpatients with chronic Chagas' disease?
QT dispersion >60 ms, along with cardiomegaly, frequent PVCs, and male sex, can effectively predict asymptomatic left ventricular systolic dysfunction in patients with chronic Chagas' disease.
Salles et al. (2003) studied this question.
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