Viral DCM is characterized by the higher severity of clinical manifestation, more rapid development of progressive heart failure and by the higher mortality rates than idiopathic DCM.

• 病毒性扩张型心肌病以更严重的临床表现为特征，相比原发性扩张型心肌病而言，它所引起的心脏进行性衰退的发展快，死亡率高。