一种基于非线性参数的心血管健康状况定量评测方法(英文)  

A Scoring Method for Quantitative Assessment of Cardiovascular Health Status Based on Non-linear Parameters

作　　者：李霞 白净[2] 金勋[2] 任志英 

机构地区：[1]Biomedical Engineer Institute,Capital Medical University,Beijing 100069 [2]清华大学医学院生物医学工程系 [3]Xuanwu Hospital

出　　处：《航天医学与医学工程》2007年第1期1-6,共6页Space Medicine & Medical Engineering

基　　金：Supported by Beijing Natural Science Foundation (3031002)

摘　　要：目的研究定量评测心血管系统功能状况的方法。方法首先记录运动实验的心电信号,经信号处理得到运动心率变异信号,然后从中提取近似熵,复杂度以及散点图中的长轴、短轴和面积等5个参数,采用判别分析对两组典型人群进行判别分类。结果在判别分析基础上建立一个百分制评分体系,并根据得分区间划分为4个等级。为了验证该评分体系的有效性,对3组健康状况不同的人群进行了打分,包括60位中年高血压患者,50位老年者以及110位年轻的健康者。结论3组人群的健康状况评测结果与实际情况相符合,说明所提出的方法可以对测试者的心血管健康状况进行有效地评测。Objective To study a scoring method for assessing function status of cardiovascular system quantitatively. Methods First, exercise heart rate variability （EHRV） was obtained from the primary dynamic electrocardiogram （ECG） recorded during exercise testing. Then appropriate entropy, relative complexity, and other three parameters extracted from poincare dispersed-dot plot were extracted from the EHRV. Discriminant analysis was used to classify two extreme groups. Results Based on the values of two groups from the discriminant formula, a scoring formula was proposed and four ranks were divided according to different score domains. A novel scoring method was established. To validate the proposed scoring method, 60 middle-aged hypertensives, 50 elder subjects and 110 young healthy subjects were examined and scored. Conclusion Scores of 220 subjects are consistent with their real health status. The proposed scoring method reflects the status of the subject＇s cardiovascular system effectively.

关 键 词：评分方法 运动实验 非线性参数 心血管功能状况 

分 类 号：R318.5[医药卫生—生物医学工程]