克山病作为生物地球化学性疾病,据史料记载已有百余年的流行历史。该病起病急骤、变化多端、病情危重、死亡率较高,重者很快发生心源性休克或心力衰竭,轻者常年心律不齐,心悸气短,惶惶不可终日。目前,查明全国15个省和自治区的309个县(旗)有克山病,病区分布于我国从东北到西南的一条狭长 Keshan disease as a biogeochemical disease, according to historical records have been more than a hundred years of popular history. The rapid onset of the disease, changing, critically ill, high mortality, severe cardiogenic shock or heart failure occurs very soon, the light years of arrhythmia, shortness of breath, palpitations, panic. Currently, Keshan disease has been identified in 309 counties (banners) in 15 provinces and autonomous regions of the country. The ward is distributed in a narrow and long area in our country from northeast to southwest