| 犬缺血和失血状态下心率变异性分析 |
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| 引用本文： | 沈霖霖,汤大侃,吴国强,蒋有铭,沈旭峰,沈小雁.犬缺血和失血状态下心率变异性分析[J].复旦学报(医学版),1994(5). |
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| 作者姓名： | 沈霖霖 汤大侃 吴国强 蒋有铭 沈旭峰 沈小雁 |
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| 作者单位： | 上海医科大学基础医学院生物医学工程教研室 |
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| 摘 要： | 用间隔直方图与轨迹图，对处于各种状态下的８条草犬心电信号的Ｒ－Ｒ间隔波进行分析。结果显示，对照状态时Ｒ－Ｒ间隔直方图上分布范围宽，轨迹图面积大，类似于奇怪吸引子；而在缺血缺氧或失血状态时，间隔直方图上分布范围窄，轨迹图面积缩小，显示出不动点吸引子的特征，揭示健康心脏的心率变异性大，呈混沌态；而在病理条件下心率变异性小，呈周期性趋势。心率变异性能无创，敏感地反映心血管系统的功能，为临床提供了一个评估心血管功能的指标。
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| 关 键 词： | R－R间隔直方图：心率轨迹图 吸引子 心率变异性 |
THE ANALYSIS OF HEART RATE VARIABILITY IN CAROTID ARTERY OCCLUSION OR HAEMORRHAGE IN DOGS |
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| Shen Linlin, Tang Dakan, Wu Guoqiang,Jiang Youming,Shen Xufeng,Shen Xiaoyan.THE ANALYSIS OF HEART RATE VARIABILITY IN CAROTID ARTERY OCCLUSION OR HAEMORRHAGE IN DOGS[J].Fudan University Journal of Medical Sciences,1994(5). |
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| Authors: | Shen Linlin Tang Dakan Wu Guoqiang Jiang Youming Shen Xufeng Shen Xiaoyan |
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| Abstract: | The present paper provides an analysis of heart rate variability (HRV) under different conditions with the histogram and Poincare map on 8 healthy dogs.Results show that the ragion is broader on histogram in control conditions than in carotid artery occlusion or haemorrhage. The Poincare map appears a strange attractor in control conditions, but a point attractor in carotid artery occlusion or haemorrhage. It means that the HRV is greater in control conditions than in abnormal conditions. Studies on HRV may provide more sensitive indicators in assessing cardiovascular function. |
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| Keywords: | R-R interval histogram Poincare map attractor heart rate variability |
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