通过人体主动脉脉搏波计算得出的瞬时血流、阻抗和弹性特性。

Instantaneous blood flow, impedance and elastic properties computed in man from aortic pulse waves.

作者信息

Tedgui A S, Levy B I, Sebag S R

出版信息

J Theor Biol. 1983 Apr 7;101(3):345-54. doi: 10.1016/0022-5193(83)90143-1.

Abstract

A mathematical model of the pressure-flow relationship in the arterial circulation and its possible use in routine hemodynamics in man are described. The instantaneous blood flow velocity in the ascending aorta can be calculated from two pressure curves simultaneously recorded 5 cm apart. The mechanical aortic input impedance is computed from the recorded pressure and the calculated blood flow velocity curves. Projection of the pulse waves on a time-length plane leads to the determination of the pulse wave velocity and then an estimation of the elastic modulus of the aortic wall.

摘要

本文描述了动脉循环中压力-流量关系的数学模型及其在人体常规血流动力学中的可能应用。升主动脉的瞬时血流速度可根据同时记录的相距5厘米的两条压力曲线计算得出。机械主动脉输入阻抗是根据记录的压力和计算出的血流速度曲线计算得出的。将脉搏波投影到时间-长度平面上可确定脉搏波速度，进而估算主动脉壁的弹性模量。