Construction Method for Normalized Histogram of RR Sequence and Its Application for Evaluation Heart Failure
心电间期序列归一化直方图的构造方法及其在评价心力衰竭中的应用

A new method for heart rate variability (HRV) analysis, normalized histogram of RR sequence, was proposed and applied to evaluate the heart failure of the subjects. Firstly, RR sequence was obtained from ECG signal which was recorded for about 5 minutes. Then the normalized histogram of RR sequence was constructed. Moreover, the center-edge ratio (CER) and cumulative energy (CE) were defined. According to experiments on the heart failure group (16 subjects) and health control (30 subjects), it showed that CER and CE were excellent of group discrimination and valuable in evaluating the heart failure level quantitatively.