扩张型心肌病是一组原因不明的以心脏扩大为主要表现的心脏病,约占整个心肌病的70%~80%,其病理基础是心脏扩大和心室收缩功能降低。临床表现主要是心功能不全的症状,早期症状可不明显,常常发生难治性心衰和致死性心律失常。至今尚无特异性治疗方法,5a生存率不及50%。因心肌各部 Dilated cardiomyopathy is a group of unknown causes of heart enlargement as the main manifestation of heart disease, accounting for about 70% to 80% of cardiomyopathy, the pathological basis of the expansion of the heart and reduce ventricular systolic function. Clinical manifestations of heart failure is mainly the symptoms of early symptoms may not obvious, often with refractory heart failure and fatal arrhythmias. To date there is no specific treatment, 5a survival rate of less than 50%. Due to myocardial ministries