1Department of Internal Medicine, Shohsei Hospital, 2First Department of Internal Medicine, Kobe University School of Medicine
Dilated cardiomyopathy, Echocardiography, Mild dilation, Early stage
Clinical feature and prognosis of the patients with mildly dilated left ventricle (mildly dilated heart disease: MDHD) without apparent causes such as valvular regurgitation or ischemic heart disease were evaluated with echocardiography. Among 24 patients with MDHD, 12 patients had a history of systemic hypertension, 3 patients had a history of tachyarrhythmia of transient or fixed atrial fibrillation, and 3 patients were considered to be a mitral valve prolapse syndrome. Six patients, however, had no such presumed cause. During a follow-up period more than one year, five patients deteriorated their cardiac functions, and progressed into the clinical feature like dilated cardiomyopathy. It was concluded that about half cases with MDHD were a kind of hypertensive heart disease, and that a few cases, however, might be an early stage of dilated cardiomyopathy.