Arquivos brasileiros de cardiologia
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Arq. Bras. Cardiol. · Jul 1998
Clinical Trial[Contribution of dynamic electrocardiography by Holter monitoring in the evaluation of congenital long QT syndrome patients].
The purpose of this study was to evaluate the value of ambulatory electrocardiogram as a clinical tool to assess ventricular repolarization in patients with the congenital long QT syndrome. ⋯ The data showed increased hourly QTc variability. QTc dispersion and worse correlation between QT and heart rate. This data may reflect an abnormally augmented ventricular vulnerability.