24例甲状腺机能亢进症患者心率变异性分析

Analysis of Heart Rate Variation in24Patients with Hyperthyroidism

目的 :探讨甲状腺机能亢进症(甲亢)患者心率变异性(HRV)测定的意义。方法 :分别测定30例正常人和24例甲亢患者的HRV功率谱指标及混沌指标。结果 :甲亢患者HRV功率谱指标总功率(TFP)、超低频段功率(PVV)、高频段功率(PHV)及混沌指标相对分散度(HRD)、李雅普诺夫指数(HLE)、分维数(HFD)、混沌度(LCC)与对照组相比均明显降低 ,PVV与PHV比值明显增高。功率谱指标与混沌指标间呈显著线性相关。结论 :甲亢患者的自主神经活动明显改变 。

Objective:To analyse the heart rate variation(HRV)in24patients with hyperthyroidism.Methˉods:The HRV in patients with hyperthyroidism was compared with that in normal controls.Results:The specˉtral index(TFP,PVV and PHV)values and the chaotic index(HRD,HLE,HFD and LCC)values of the HRV in hyperthyroid group were significantly lower than those in control group.There was a significant correlation between power spectral indexes and chaotic indexes.Conclusion:The activity of autonomic nerves in hyperthyˉroid patients was obviously changed,so the spectral indexes of the HRV were obviously related to the chaotic indexes.