老年人体位改变过程中心血管振荡的短期复杂性

2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO) Pub Date : 2014-05-25 DOI:10.1109/ESGCO.2014.6847513

A. Catai, A. Takahashi, N. Perseguini, J. Milan, V. Minatel, T. Bassani, V. Bari, A. Marchi, P. R. Santos, A. Borghi-Silva, N. Montano, A. Porta

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引用次数: 0

摘要

计算R-R间期(RR)复杂性和收缩压(SAP)变异性，以检测平卧位(REST)和站立位(STAND)时衰老过程对心血管控制的影响。100名健康受试者按年龄分为5组(每组20人):21-30岁;31-40;每周的;51-60;61 - 70。RR和SAP系列分别在REST和STAND状态下记录15分钟。利用条件熵法对短序列的RR和SAP进行分析。在REST中，RR复杂度在61-70岁之间随着年龄的增长而降低，SAP复杂度从31-40岁开始下降。STAND诱导的心血管控制复杂性的变化揭示了老年人在处理交感压力源时的困难。

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Short-term complexity of cardiovascular oscillations during orthostatic change in aging

Complexity of R-R intervals (RR) and systolic arterial pressure (SAP) variability were computed to detect the aging process influence over cardiovascular control in resting supine (REST) and standing position (STAND). One hundred healthy subjects were divided into five groups (n=20 for each), according to age: 21-30; 31-40; 41-50; 51-60; 61-70. The RR and SAP series were recorded for 15 minutes at REST and STAND. Short sequences of RR and SAP were analyzed by conditional entropy. At REST, RR complexity showed reduction with age in 61-70, and SAP complexity decreased, starting from 31-40. Changes in cardiovascular control complexity, induced by STAND, reveal the difficulty of elderly individuals in dealing with sympathetic stressors.

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来源期刊

2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO)

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