| Summary: | 碩士 === 中原大學 === 醫學工程學系 === 84 === This research was to investigate the pulse signals of
hypertensive patients and non-hypertensive patients by a self-
made infrared ray finger plethysmography system and then to
analyze the signals with time domaion and frequency domain(
SER(10)) methods. By the cooperation with the China
Medical Collage, 118 signals of finger of patients(38
hypertensive patients, 80 non- hypertensive patients ) were
collected and analyzed. The statistical results showed the
differences of the pulses between hypertensive and non-
hypertensive patients. Those were: the U-P duration
(223.75±42.84(ms)) of right hands of hyertensive patients
greater than the values (181.07±45.44(ms)) of non-
hypertensive patients,the ratio of "U-P duration/U-U duration"(
0.3108±0.043)of right hands of hypertensive patients. In the
frequency domain analysis,the groups of hypertensive patients
and non-hypertensive patients were compared with SER(10),and
the statistical results showed no significant difference. The
above results of time domain analysis may be due to the changes
of the vascular properties or the increasing of peripheral
resistance of vascular system which made the increasing of
duration of ventricular contraction in a heart beat cycle.
The pattern of infrared ray pulse was compared with the
pattern of Chinese medicine pulse diagnosis. It showed
that the hypertensive patients with no derived diseases
including cerebral stroke, heart diseases, diabetes and
kidney diseases had the pulse attribute of string-rough.
Finally,a great deal of signal collection and further study are
necessary for the application of the infrared ray pulse
diagnosis system in the diseases other than the cardiovascular
diseases.
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