动脉中脉搏波传播分析英文版13页.doc

PAGE  PAGE 13 ANALYSE OF PULSE WAVE PROPATION IN ARTERIE Abstract: Based upon the blood vessel of being regarded as the elasticity tube, and that the tissue restricts the blood vessel wall, the rule of pulse wave propagation in blood vessel was studied. The viscosity of blood, the elastic modulus of blood vessel, the radius of tube that influenced the pulse wave propagation were analyzed. Comparing the result that considered the viscosity of blood with another result that did not consider the viscosity of blood, we finally discover that the viscosity of blood that influences the pulse wave propagation can not be neglected; and with the accretion of the elastic modulus the speed of propagation augments and the press of blood stream also heightens; when diameter of blood vessel reduces, the press of blood stream also heightens and the speed of pulse wave also augments. These results will contribute to making use of the information of pulse wave to analyse and auxiliarily diagnose some causes of human disease. Introduction The blood vessel’s geometric form and mechanical characters are able to change because of the location pathological changes, and this change inevitably induces the aberrance that the characters of pulse wave propagation. From the later stage of the fifties of the 20th century more and more people have studied it. If we well and truly identify the pathological changes from the pulse wave signal that is checked without wound, this is undoubtedly an amazing contribution to medical science. However if we achieved this purpose, we must have understood the rule of pulse wave propagation in arteries system. When blood is flowing in the blood vessel, the pressure of blood, the speed of blood, the flux and the diameter of the blood vessel do the periodic change with time, and the wave form is complicated. Pulse wave is formed by heart beat along arteries blood vessel and the periphery blood flow propagation medium-the elasticity of arteries, the size