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简述甲状腺功能亢进症患者怕热多汗、消瘦无力、烦躁易激动、心悸等症状发生的原因。

答案

参考答案:

甲状腺激素能提高机体的能量代谢水平,增加组织的耗氧量和产热量,并且能够刺激脂肪酸氧化,产生大量热量,因此甲状腺功能亢进症患者怕热而多汗。甲状腺功能亢进症患者甲状腺激素分泌过多,使蛋白质分解代谢明显大于合成代谢,出现负氮平衡,特别是骨骼肌蛋白质大量分解,患者消瘦无力。

甲状腺激素能够提高中枢神经系统的兴奋性,特别是交感神经系统,因此造成烦躁易怒。甲状腺激素可使心跳加强加快,心排血量增加,组织耗氧量增多,所以甲状腺功能亢进症患者常有心悸症状。

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