SUMMARY Longitudinal echocardiographic studies of left ventricular (LV) function in valvular disease were evaluated in 24 medically treated patients followed for 6 months to 3 years (mean 16.3 months) and in 22 surgically treated patients before and at least 1 year after operation (mean 14 months). In initial reproducibility studies of enlarged hearts (mean end-diastolic dimension [EDDI 6.6
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