Research On The Relationship Between Pulse Wave Analysis And Arterial Blood Pressure

Human being has been in the aging times. In the recent two decade it was one of world-wide research focus on Hypertension as the factor of maximum mortality in the aspect of cardiovascular diseases. Accurately detecting blood pressure and vascular physiological parameters of human body under the noninvasive mode, combining with the traditional medicine treatment only, is more significant for the pre-diagnosis of cardiovascular system and disease prevention among the healthy cohorts. The method of noninvasive detection of blood pressure, which is capable to avoid the infections from invasive mode and form the portable and high accurate device, is especially suitable for observing the subjects'changes of blood pressure at any time. Therefore in the recent years this method has been one of research hot spots all over the world.It had a long history for Pulse Diagnosis, namely Pulse Feeling, and was the most important links among the dialectical theories in Chinese Medicine. Nowadays as a method to assess the cardiovascular physiological characteristics the pulse waveform comprehended from the dimension of Modern Medicine has been using in a world-wide range. The research on the relationship between Pulse Wave Velocity and Arterial Blood Pressure can be traced back to 1920's. And it showed potential in the aspect of convenience in detecting Arterial Blood Pressure per pulse for utilizing Pulse Transit Time method, which reversely correlated with Pulse Wave Velocity. Since 1970's it held a good feasibility assessed as a new direction for the anaylsis and research on single pulse waveform in this field. And it mostly forcused on the studies on Power Spectrum and was productive for the analysis on Pulse Waveform in frequency-domain from the beginning of 1980's. These research directions of the correlation between the characteristic of Pulse Wave and Arterial Blood Pressure laid a solid foundation for Noninvasive Continuous Detection of Blood Pressure per pulse.In this paper, a newly developed direction of the relationship between the frequency amplitude of FFT analysis for single pulse waveform and Arterial Blood Pressure was introduced. A series of relevant trial results showed that this method was not only highly accurate but also gave the obvious potential in the aspect of convenience in improving on Noninvasive Detection of Blood Pressure system further. The classical mathematical technique, Fast Fourier Transformation which can transform the pulse signal from time-domain to frequency-domain, was utilized in this project. And this pilot exploration for the novel direction bulit a good foundation for the quantitative research of Noninvasive Detection of Blood Pressure. It is convinced that this method is likely to broaden its application range, such as wearable device for Arterial Blood Pressure monitoring and preliminary examination.