心肌炎是由感染、化学或物理因子通过直接损害、毒素或免疫反应所引起的心肌炎症,它至今仍是一种有争议的疾病,争议的内容包括定义、诊断和治疗等。 本病是没有特殊临床表现而突然发生充血性心力衰竭的重要原因之一,自采用心腔镜心肌活检以来,其确诊已广泛应用组织学和Dallas分类方法,但尚未被普遍采用和公认。按此标准,心肌炎是一种伴有毗邻细胞坏死和/或变性的心肌炎症浸润过程。但没有冠状动脉疾病的典型缺血性损害 Myocarditis is a myocarditis caused by direct damage, toxins or immune response caused by infection, chemical or physical factors. It is still a controversial disease. The controversy includes definition, diagnosis and treatment. The disease is one of the important causes of sudden congestive heart failure without special clinical manifestations. Since the use of endocardial myocardial biopsy, its diagnosis has been widely used histological and Dallas classification methods, but has not been widely adopted and recognized. According to this standard, myocarditis is a myocardial infiltration associated with adjacent cell necrosis and / or degeneration. But there is no typical ischemic injury of coronary artery disease