Abstract
Clinical heart disease was recognized in the first descriptions of Friedreich's ataxia (FA). Cardiac manifestations reported for this progressive neurologic disease include hypertrophic cardiomyopathy, dilated cardiomyopathy, and electrophysiologic disturbances. Longitudinal data for childhood cases are limited. This study aimed to define the longitudinal course of the cardiac abnormalities with FA diagnosed during childhood and to correlate the presence of cardiomyopathy with clinical and genetic factors. A retrospective chart review was conducted, with prospective, blinded interpretation of echocardiograms and electrocardiograms. All the patients with a diagnosis of FA referred to the cardiology department of a single institution from 1974 to 2004 were included in the study. This study investigated a total of 113 echocardiograms for 28 patients. Overall, the group had left ventricular hypertrophy and normal systolic function, with a median mass z-score of 2.48 (range, -3.8 to 35.6) and a median ejection fraction (EF) of 61% (range, 23-81%). Of the 28 patients, 23 (82%) had two or more echocardiograms. The median follow-up time to the most recent echocardiogram was 5.1 years (range, 0.4-16.5 years). Many in this longitudinal f...Continue Reading
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