The exponential decay characteristic of the spectral distribution of blood pressure wave in radial artery
The exponential decay characteristic of the spectral distribution of blood pressure wave in radial artery
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DOI：
10.1016/j.compbiomed.2009.03.005
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发表时间：
2009-05-01
影响因子：
7.7
通讯作者：
Liao, Yin-Tzu
中科院分区：
文献类型：
--
作者：
Wei, Ching-Chuan;Huang, Chin-Ming;Liao, Yin-Tzu
本研究分析了手腕桡动脉血压波（BPW）频谱中谐波峰值的指数衰减特性。提出了低阶谐波偏差（LHD）、高阶谐波偏差（HHD）、总谐波偏差（THD）和指数（a），用于评估正常受试者（N组）和心悸患者（P组）的指数衰减特征。统计结果表明，只有N组的HHD（p值 = 0.01 < 0.05）显著小于P组，而LHD（p值 = 0.08 > 0.05）、THD（p值 = 0.22 > 0.05）和a（p值 = 0.23 > 0.05）无显著差异。结果意味着，患者的频谱谐波峰值在指数衰减曲线上的高阶谐波偏差比正常受试者更严重。总之，本文提出了一个新的观点，即在频谱域观察心脏在正常和异常情况下如何将血液分配到动脉系统中。（C）2009爱思唯尔有限公司。保留所有权利。
This study analyzed the exponential decay characteristic of the harmonic peaks in the spectrum of blood pressure wave (BPW) from radial artery at wrist. Low-order harmonic deviation (LHD), high-order harmonic deviation (HHD), total harmonic deviation (THD) and exponent (a) were developed to assess the exponential decay feature of normal subjects (N group) and the patients with palpitation (P group). The statistical results indicate that only the HHD (p value = 0.01 < 0.05) of N group is significantly less than that of P group while LHD (p value = 0.08 > 0.05), THD (p value = 0.22 > 0.05) and a (p value = 0.23 > 0.05) make no significant differences. The results imply that the spectral harmonic peaks for patient subjects exhibit more severe deviations in high-order harmonics along the exponential decay curve than those for normal subjects. In conclusion, this paper proposes a novel viewpoint to observe how the heart distributes blood into arterial system under normal and abnormal situations in spectral domain. (C) 2009 Elsevier Ltd. All rights reserved.