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无论甲状腺机能亢进症(以下简称甲亢症)还是甲状腺机能减退症(以下简称甲减症)都能引起心血管疾病。但在临床上要较早地明确诊断和原因治疗是不容易的。甲状腺病变引起心血管疾病是由于甲状腺素直接对心肌的作用,就是说甲状腺素本身通过儿茶酚胺或二者一起引起末梢组织代谢变化所致。甲亢症是过多的甲状腺素刺激心肌,使心肌对儿茶酚胺感受性增加,而加快心跳和增强心肌收缩力。又由于末梢组织代谢亢进,组织对氧需要量增加而引起末梢血管扩张,末梢血管扩张要求更多的心输出
Hyperthyroidism (hereinafter referred to as hyperthyroidism) or hypothyroidism (hereinafter referred to as hypothyroidism) can cause cardiovascular disease. However, it is not easy to confirm the diagnosis and cause of treatment earlier in the clinic. Thyroid disease caused by cardiovascular disease is due to the role of thyroxine directly on the myocardium, that thyroxine itself by catecholamines or both caused by changes in peripheral tissue metabolism. Hyperthyroidism is too much thyroxine to stimulate the myocardium, so that increased myocardial catecholaminergic sensitivity and speed up the heart and enhance myocardial contractility. Also due to hypervascular tissue hyperfunction, tissue oxygen demand increases caused by peripheral vasodilation, peripheral vasodilation requires more cardiac output