每搏心输出量计算中电极配置结构的三维有限元仿真研究

Simulation Study of Electrode Configurations for Cardiac Stroke Volume Calculation by 3-Dimentional Finite Element Method

从 Kubicek模型三维有限元仿真的角度对用于每搏心输出量 (SV )测定的 Kubicek电极配置结构进行了三维有限元的仿真研究。分别探讨了电压电极带的宽度、厚度、材料特性即电阻率大小对 SV计算结果的影响 ,以指导临床中电极配置结构及其材料的选择。仿真结果表明 :Kubicek电极配置结构中 ,其电压电极带的特性 ,如材料的选择、带的宽度及带的厚度均对模型中用于 SV计算的阻抗值结果产生影响 ,其中材料的选择是主要的影响因素。因此 ,采用 Kubicek法进行 SV计算时 ,应注意 Kubicek电极配置结构的选择 ,以提高

This is a research in Kubicek electrode configurations for cardiac stroke volume calculation from the angle of Kubicek model simulation by 3-dimentional finite element method. In the process of computer simulation, we have studied, respectively, the effect of the width, thickness, and material property (specific resistance) of potential electrode band on cardiac stroke volume calculation in order to guide the choice of electrode configurations in the clinic. The simulation results showed that in Kubicek electrode configurations, its all properties of the potential electrode band affected the impedance results for cardiac stroke volume calculation, one main factor of which is the choice of the material property. Therefore, we have to attend to the choice of Kubicek electrode configurations while calculating SV by Kubicek method in order to improve the accuracy of SV calculation.