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首页> 外文会议>2017 15th International Conference on Quality in Research : International Symposium on Electrical and Computer Engineering >Identification of pulse frequency spectrum of chronic kidney disease patients measured at TCM points using FFT processing
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Identification of pulse frequency spectrum of chronic kidney disease patients measured at TCM points using FFT processing

机译：使用FFT处理识别在中医穴位测量的慢性肾脏病患者的脉冲频谱

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Mortality due to chronic kidney disease (CKD) increases significantly in a recent year. The disease often is diagnosed in an advanced stage. On the other hand, there has been traditional Chinese method or technique to diagnose the presence of the CKD. The diagnosis is carried out by examining pulse palpation at three points namely cun, guan and chi located at the radial artery of the left hand. Records of the pulse pattern of the CKD patients showed irregular characteristics compared with regular pattern obtained from healthy subjects. The aim of this study was to determine the relationship between the frequency spectrum of the irregular pulses related to the stages of the CKD especially from the chi area. Data of the irregular pulse were categorized into 6 stages i.e. 1, 2, 3a, 3b, 4, and 5 of the CKD patients. The data were collected by measuring pressure during systolic periods or when blood vessels were in a relaxed state. In this period, the instrumentation records reflections of the pulse including information about the amplitudes, frequencies, and pulse wave patterns. Observations were focused on the part of the signal between low and high amplitude on pulse patterns (systolic period). The irregular patterns were processed by a Fast Fourier Transform (FFT) technique to find out their special characteristics quantitatively. Results showed that the pattern irregularity was related to the severity of the kidney dysfunction. The FFT processing results showed a number of different special characters in the spectrum. The data were clustered related to the CKD stages. The clustered data of the CKD patients indicates a correlation between the stages and the shifting of the spectrum to lower frequencies which are 0.26 Hz compared to health subject's data 1.11 Hz.
机译：近年来，由于慢性肾脏病（CKD）引起的死亡率显着增加。该病通常被诊断为晚期。另一方面，已经有传统的中国方法或技术来诊断CKD的存在。诊断是通过检查位于左手the动脉的三个部位（即村，关和chi）的脉搏触诊来进行的。 CKD患者的脉搏模式记录显示出与健康受试者的规则脉搏相比不规则的特征。这项研究的目的是确定与CKD阶段有关的不规则脉冲的频谱之间的关系，特别是在chi地区。不规则脉搏的数据分为CKD患者的6个阶段，即1、2、3a，3b，4和5个阶段。通过测量收缩期或血管处于松弛状态时的压力来收集数据。在此期间，仪器会记录脉冲的反射，包括有关幅度，频率和脉搏波模式的信息。观察集中在脉冲模式（收缩期）的低振幅和高振幅之间的信号部分上。通过快速傅立叶变换（FFT）技术对不规则图案进行处理，以定量地找到其特殊特征。结果表明，模式不规则与肾脏功能障碍的严重程度有关。 FFT处理结果显示了频谱中许多不同的特殊字符。数据与CKD阶段有关。 CKD患者的聚类数据表明，与健康受试者的数据1.11 Hz相比，各阶段与频谱向0.26 Hz更低频率的移动之间存在相关性。

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