Abstract
In this paper, under the linear assumption, the analytical expressions describing the pressure sphygmogram of the radial artery are obtained in regard to the effect of the blood viscosity. Then the variations of the pulse wave form with some physiological parameters such as arterial elasticity, blood viscosity and resistance are discussed in detail too. We observed that venous injection of demethyladrenalin made a dog's vessels contract and increase in resistance while that of parasitic loranthus made the vessels relax and decrease in resistance, and variations of the pressure sphygmogram of the dog's radial artery conformed to theoretical results. Besides, taking the pressure sphygmogram of radial artery corresponding to smooth, normal and wiry pulses of the pulse conditions in traditional Chinese medicine as examples, we discussed the effect of related physiological parameters on these sphygmogram, which also conformed to the classical statement of the wiry, normal and smooth pulses in traditional Chinese medicine.
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