Analysis of Pulse Wave and its Correspondence with Diagnosis in Chinese Medicine / 全日本鍼灸学会雑誌

ABSTRACT

Pulse diagnosis is one of the most important diagnostic method in Chinese medicine, however, the expression of this diagnostic technique is subjective and cannot be in this form compared with modern medicine. Many attempts to describe the pulse conditions objectively have been made, however, there has been little success.<br>Any wave can be described by the frequency distribution of the energy, according to Fourier. Using this method, we tried to objectify the pulse wave. For the recording of the pulse, a pick-up (Nihon Kohden TF-11S) was fixed in a place at the radial artery and pressure applied using a micromanipulator. The output was put into a data recorder through an amplifier and monitored by an oscillograph. Data was then processed using computer (HITAC-20) and power spectrums were displayed.<br>In the above described method, the minimum and maximum force which should be applied to detect the pulse wave varied from person to person. The range was from 10-50g and 400-600g for minimum and maximum, respectively. This can be considered as individual variations of so called “floating and sunken” pulses. The best shape of pulse waves were obtained with 100-300g of pressure.<br>A typical power spectrum of pulse wave was composed of standard sine curve (approximately 1Hz, basic wave) and its harmonics. Sharply peaked waves occured when the basic component was great and oppositely, the flatter waves contained abundant of harmonics. The ratio of the basic wave to its harmonics represents the characteristics of wave pattern, i. e., objective description of pulse conditions can be made.<br>We will then, investigate the correspondence of the recordings to the expressions in the Chinese medicine, influences of acupuncture, etc.