• J. Card. Fail. · Dec 1995

    Left ventricular enlargement is common in relatives of patients with dilated cardiomyopathy.

    • Z T Bilinska, E Michalak, B Kusmierczyk-Droszcz, W Rydlewska-Sadowska, J Grzybowski, W Kupsc, and W Ruzyllo.
    • Department of General Cardiology, National Institute of Cardiology, Warsaw, Poland.
    • J. Card. Fail. 1995 Dec 1; 1 (5): 347-53.

    AbstractIdiopathic dilated cardiomyopathy is characterized by dilation and impaired contractility of one or both ventricles. Long-term prognosis is poor. Early diagnosis has the potential for substantial reduction of morbidity and mortality. Recent studies, based on echocardiographic assessment of relatives of the patients have shown that familial dilated cardiomyopathy is relatively common. The authors studied 215 relatives (mean age, 27 years; 111 male) of 38 index patients with idiopathic dilated cardiomyopathy by clinical examination, electrocardiography, and two-dimensional, M-mode and Doppler echocardiography. Seven relatives (3%) from six families were shown to have dilated cardiomyopathy. Thus, 6 of the 38 index patients (16%) had familial disease. Furthermore, left ventricular enlargement either during diastole or systole was found in 66 of 174 healthy relatives (38%). This is significantly more frequent than in our normal control population of 100 unrelated subjects studied in the same way (18%; P < .0001). These 66 relatives with left ventricular enlargement belonged to 27 of the 38 examined families (71%). Dilated cardiomyopathy was found to be familial in 16% of patients. Of the relatives examined, 41% had left ventricular abnormalities. These findings provide further evidence for a genetic background of dilated cardiomyopathy. Relatives with left ventricular enlargement may have an early stage and/or latent form of the disease.

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