一、扩张性心肌病发病较缓慢,逐渐发生,迁延加重,但有时亦可突然发生、最初仅有心脏增大,心功能代偿而无症状。经一段时间可出现胸闷、气短、心悸。这一时期有时可达10年左右。发病症状常以充血性心力衰竭为主,其中以气急,浮肿最常见。重者可出现 First, the onset of dilated cardiomyopathy more slowly, gradually, exacerbated, but sometimes can also happen suddenly, initially only the heart increased, compensatory heart function without symptoms. After a period of time may appear chest tightness, shortness of breath, palpitations. This period sometimes up to 10 years or so. Symptoms often congestive heart failure-based, of which urgency, edema is the most common. Heavy can appear