心脏每搏输出量新型Kubicek模型的研究  

Study of New Kubicek Model for Cardiac Stroke Volum

作　　者：林振衡[1] 黄元庆[1] 杨威 

机构地区：[1]厦门大学物理与机电工程学院 [2]莆田市第一医院心血管内科,福建莆田351100

出　　处：《厦门大学学报（自然科学版）》2008年第5期677-680,共4页Journal of Xiamen University：Natural Science

基　　金：福建省教育厅科研基金(JB06160)资助

摘　　要：针对传统的Kubicek模型在心脏每搏输出量(SV)理论推导和实际测量中存在一定的缺陷,根据心脏血流动力学原理,提出了一种新型Kubicek模型及其阻抗和导纳等效电路图,并依据该新型模型推导出基于阻抗法和导纳法测量SV的计算公式,指出依据旧模型进行的阻抗法测量产生偏差的重要原因是忽略了血液电导率(ρ)的变化.通过对新模型中两种测量方法的比较,进一步从理论上验证了导纳法具有更高测量精度.这些结论对今后的应用研究及相关仪器的开发具有一定的参考价值.Using the old K ubicek model to deduct the formulas of cardiac stroke volume （SV） and to measure the parameter,we found that there were some disadvantages. Based on the theory of heart hemodynamics,a new kind of Kuhicek model and its equivalent circuit diagrams of impedance and admittance were proposed in this paper. Using the new model, the formulas of cardiac stroke volume （SV） based on the methods of impedance and admittance were worked out. The paper showed that the important cause of the measurement error of impedance method,which was based on the old Kubicek model, was in neglecting the change of the conductance （p） of blood. Furthermore,we validated that,compared to the method of impedance in theory, the method of admittance had higher accuracy for measuring the cardiac stroke volume （SV）. These conclusions have reference value for the future research and exploitation of relative instrument.

关 键 词：每搏心输出量 Kubicek模型 导纳法 心导纳微分环 

分 类 号：R318[医药卫生—生物医学工程] TP212[医药卫生—基础医学]