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甲状腺功能减退(甲减)最常见于妇女,男女之比约1∶3.4～10,多发生于30～60岁。原发性甲减占绝大多数。1973年 Evered 等按甲减的病情分为重型甲减(粘液性水肿)、轻型甲减和亚临床甲减3型。人体各组织器官都可因甲状腺激素不足而受到不同程度的影响,心脏受累则更为常见。近来,由于放射免疫法检测甲状腺功能和心脏无创性检查(超声心动图和收缩时间间期)的联合应用,加强了甲减病人心脏的研究,认为称“甲减性心脏病”更恰当。
Hypothyroidism (hypothyroidism) is most common in women, male to female ratio of about 1: 3.4 ~ 10, occurred in 30 to 60 years old. Primary hypothyroidism accounted for the vast majority. In 1973 Evered et al hypothyroidism is divided into severe hypothyroidism (myxedema), mild hypothyroidism and subclinical hypothyroidism type 3. Organ tissue and organs of the human body can be affected by thyroid hormone deficiency to varying degrees, heart involvement is more common. Recently, due to the combined use of radioimmunoassay for detecting thyroid function and noninvasive cardiac examination (echocardiography and systolic time interval), studies of the heart of hypothyroidism have been strengthened, arguing that hypothyroidism is more appropriate.