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原发性扩张型心肌病是一组以心腔扩大,特别是以左心室腔扩大为主及心收缩功能低下为基本特征的心肌病。由于这一组疾病的病因未明,无法建立病因学诊断。晚期病例有心脏普大或以左心室扩大为主要改变伴充血性心力衰竭或栓塞症状。早期可无症状而仅有心脏增大,及/或各种心律失常或反映心肌损害的ST-T心电图异常.但实际上,本病是由心肌组织学病变开始,引起心肌收缩功能低下,直到可以查出心脏扩大时,才被诊断为扩张型心肌病;因此,心脏增大已不是疾病真正的早期了。由于本病临床表现乃至病理组织学改变都不具
Primary dilated cardiomyopathy is a group of cardiomyopathy that is characterized by an enlargement of the heart chamber, in particular the expansion of the left ventricle and the reduction of cardiac systolic function. Due to the unknown etiology of this group of diseases, etiological diagnosis can not be established. Advanced cases of cardiac enlargement or left ventricular enlargement as the main change with congestive heart failure or embolic symptoms. Early asymptomatic but only the heart increased, and / or a variety of arrhythmia or reflect the myocardial damage ST-T electrocardiogram abnormalities, but in fact, the disease is caused by myocardial histological lesions, causing myocardial systolic dysfunction until Can be detected when the heart is enlarged, was diagnosed with dilated cardiomyopathy; therefore, cardiac enlargement is not the real early disease. Due to the clinical manifestations of the disease and even histopathological changes are not