姚安县是克山病历史重病区，资料表明１９７７年克山病发病率高达９８ ３７／１０万，经过２０多年的综合防治，全县克山病发病已降至较低水平，但是，近年来在中小学生中时有不明原因猝死病例，也常可检出符合潜在型克山病诊标准的患者。为了掌握我县中小学生心脏健康状况及其 Yao County is a history of Keshan disease, the data show that the incidence of Keshan disease in 1977 up to 98 37/10 million, after 20 years of comprehensive prevention and control, county Keshan disease incidence has dropped to lower levels, but in recent years There are cases of sudden death of unknown reasons when in primary and secondary schools, and patients who meet the criteria of latent Keshan disease can often be detected. In order to grasp the county’s primary and secondary school students heart health and its