克山病(Keshan disease,KD)是发生于我国病因不明的一种地方性心肌病,临床上主要分为急型、亚急型、慢型和潜在型。经过我国克山病防治工作者多年来的努力,目前急型、亚急型克山病已经很少发生。潜在型克山病心功能代偿良好,一般无明显自觉症状。慢型克山病临床主要表现为心脏 Keshan disease (KD) is a endemic cardiomyopathy in China with unknown etiology. There are mainly acute, subacute, slow and latent forms in clinic. After years of hard work in our country, Keshan disease prevention and treatment workers, the current acute, subacute K Keshan disease has seldom occurred. Potential Keshan disease compensated well, generally no obvious symptoms. Slow Keshan disease clinical manifestations of the heart