心率变异多参数定量及回归分析在鉴别儿童心电图ST

           作者：宋安齐，牛小麟，张超英，杜颖，郭润梅

【关键词】  心率变异性；ST

    【Abstract】 AIM: To study the value of heart tate variability (HRV) analysis in distinguishing the child ren with STT changes in electrocardiogram (ECG). METHODS: In 121 children (40 cases of simple STT changes, 40 of viral myocarditis with STT changes and 40 normal children), 24 h  Holter monitoring were conducted and all HRV parameters (including time domain and frequency domain) were analyzed, and the ECG changes during waking and sleeping periods was  observed. With ST depression as dependent variables, all  HRV parameters as independent variables ,multiple regression analysis was  carried out. RESULTS: In the pure STT change group, HRV was increased, HF being 1465±197 vs 497±201 (P<0.017); the alteration between sleeping and waking  periods was more obvious as compared with normal group.  In  STT changes plus viral myocarditis group, HRV was decreased continuously, TP being  2647±1328 vs 3121±569 (P<0.017), and HF being 305±199 vs 667±116 (P<0.017); the alteration between sleeping and waking  periods was significantly diminished.  Multiple regression analysis showed STT depression in pure group was correlated with HF/LF, VLF, pNN50N and SDNNN; in myocarditis group, STT depression was correlated with VLF, LFN and LF. CONCLUSION:  Specific HRV changes were found both in pure STT changes and viral myocarditis plus STT changes group. There

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