摘要
在ＨＲＶ频域分析中，比较研究了ＲＲ间期作为事件序列（Ｅｖｅｎｔ ｓｅｒｉｅｓ）与化为时间序列（Ｔｉｍｅ ｓｅｒｉｅｓ）分析所获得的结果．结果表明在平均心率较大和较小的时间片中，频谱将被改变．对后一种分析方法，我们借用“语谱图”的概念，将信号频谱随时间的变化直观地进行显示，提供ＨＲＶ时域和频域上较完整的变化信息．正常人和不同心梗病人的这种“心率谱图”在低频段和高频段所显示的不同模式，可能为探索不同情况下心率的交感－迷走控制过程及其临床应用提供新途径．
Frequency analysis approaches of HRV with RR intervals as event series and transferred as time series were compared. The results suggested that the former may introduce some spurious frequency components. Based on the latter procedure, an analysis similar to the spectrogram in speech studies was introduced, a 'Cardio-Spectrogram' obtained in this way could show the variation process of spectra of RR internals with time intutitively, and more information about the time-varying process of the spectrum of HRV could be obtained. The different patterns of 'format' both in low frequency range and high frequency range shown in the cardio-spectrograms for normal subjects and AMI patients may be helpful for clinical diagnosis and for exploration of the sympathetic vs. vagus control balance of heart rate for these different subjects.
出处
《复旦学报（自然科学版）》
CAS
CSCD
北大核心
1998年第2期203-207,共5页
Journal of Fudan University：Natural Science
基金
国家自然科学基金
