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甲状腺激素对心脏自主神经功能和心室复极动态性的影响 被引量:5

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摘要 目的通过检测心率变异性(HRV)和心室复极动态性指标评估甲状腺激素对心脏自主神经功能和心室复极动态性的影响。方法选取我院内分泌科住院及门诊甲状腺功能亢进病人57例(甲亢组),另选取年龄、性别匹配的55名健康志愿者(对照组)。检测血清游离三碘甲状腺原氨酸(FT3)、血清游离甲状腺素(FT4)、促甲状腺激素(TSH)、QT离散度(QTd)、校正QT间期(QTc)、QRS宽度、总功率(TP)、极低频功率(VLF)、低频功率(LF)、高频功率(HF)、低频功率与高频功率比值(LF/HF)、窦性心搏RR间期的标准差(SDNN)、相邻RR间期差的均方根(RMSSD)、24h内每5min时段窦性R-R间期平均值的标准差(SDANN)、相邻R-R间期差值>50ms的心搏数占所有心搏数的比例(PNN50)、PNN50a、PNN50b、QTe/RR斜率和QTp/RR斜率。结果甲亢组治疗前FT3、FT4、TSH、QTd、VLF、LF、HF、TP、SDNN、PNN50、PNN50a、PNN50b、QTe/RR和QTp/RR斜率与本组治疗后及对照组比较差异均有统计学意义(P <0.05);甲亢组治疗后各指标与对照组比较差异均无统计学意义(P>0.05)。QTe/RR斜率与VLF、LF、TP有显著相关性(P <0.05);QTp/RR斜率与TP有显著相关性(P <0.05)。结论甲状腺激素能够影响窦房结功能,导致心率增快和HRV异常,同时也会影响心室的复极动态性,导致QT/RR斜率增大。
作者 张晓君
出处 《中西医结合心脑血管病杂志》 2018年第22期3330-3333,共4页 Chinese Journal of Integrative Medicine on Cardio-Cerebrovascular Disease
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