Developing the effective method of spectral harmonic energy ratio to analyze the arterial pulse spectrum.
Developing the effective method of spectral harmonic energy ratio to analyze the arterial pulse spectrum.
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DOI：
10.1093/ecam/neq054
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Li TC
中科院分区：
文献类型：
--
作者：
Huang CM;Wei CC;Liao YT;Chang HC;Kao ST;Li TC
在本文中，我们在频谱域分析动脉脉搏。我们提出了一个参数，即频谱谐波能量比（SHER），用于评估心悸患者在第4到第6谐波中频谱能量过度降低的特征。与正常受试者相比，统计结果显示，患者组的SHER平均值（57.7±27.9）显著高于正常组（39.7±20.9）（P值 = 0.0066 < 0.01）。这意味着心悸患者在第4到第6谐波的总能量显著低于正常受试者。换句话说，正常受试者动脉脉搏的频谱分布是逐渐降低的，而心悸患者在高阶谐波（第4、第5和第6谐波）中是突然降低的。因此，SHER是在频谱域区分这两组的一种有效方法。而且，我们由此可知，在血液循环和脉诊中，“逐渐降低”可能意味着一种“平衡”状态，而“突然降低”可能意味着一种“不平衡”状态。通过SHER，我们可以确定不同谐波频段的能量分布比例，这种方法为我们提供了一个新的视角，用于理解和量化动脉脉搏所传递的循环信息的频谱谐波分布。这些概念不仅可以进一步应用于西医，也可应用于中医（TCM）以改进临床诊断。
In this article, we analyze the arterial pulse in the spectral domain. A parameter, the spectral harmonic energy ratio (SHER), is developed to assess the features of the overly decreased spectral energy in the fourth to sixth harmonic for palpitation patients. Compared with normal subjects, the statistical results reveal that the mean value of SHER in the patient group (57.7 ± 27.9) is significantly higher than that of the normal group (39.7 ± 20.9) (P-value = .0066 < .01). This means that the total energy in the fourth to sixth harmonic of palpitation patients is significantly less than it is in normal subjects. In other words, the spectral distribution of the arterial pulse gradually decreases for normal subjects while it decreases abruptly in higher-order harmonics (the fourth, fifth and sixth harmonics) for palpitation patients. Hence, SHER is an effective method to distinguish the two groups in the spectral domain. Also, we can thus know that a “gradual decrease” might mean a “balanced” state, whereas an “abrupt decrease” might mean an “unbalanced” state in blood circulation and pulse diagnosis. By SHER, we can determine the ratio of energy distribution in different harmonic bands, and this method gives us a novel viewpoint from which to comprehend and quantify the spectral harmonic distribution of circulation information conveyed by the arterial pulse. These concepts can be further applied to improve the clinical diagnosis not only in Western medicine but also in traditional Chinese medicine (TCM).