[Sphygmogram analysis based on phase trajectories].
Mattier's differential equation for parametric oscillation is suggested to be used as a method for simulating quasi-periodic processes in human body in terms of oscillation of the pulse wave produced by heart contraction. Obtained sphygmograms agree qualitatively with solutions of the Mattier's and Hill's equations at given shape of the exciting signal. A method of diagnosis based on assessment of the Mattier's equation solution stability from the phase trajectories is suggested.
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Volkov
D Iu
DIu
Kozlov
D000465:Algorithms; D050197:Atherosclerosis / Q000503:physiopathology; D001683:Biological Clocks; D001794:Blood Pressure; D002340:Carotid Artery Diseases / Q000503:physiopathology; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D011673:Pulsatile Flow