摘要
目的 分析比较几种常用的模拟心血管体循环左心室后负荷输入阻抗的集中参数模型,并将模型应用于心衰和高血压。方法 采用保证拟合精度的方法和指标,用最小二乘法拟合数据,以得到模型中元件参数值。结果 Burattini&Gnudi四元件模型和Liu ZR改进五元件模型拟合程度优于其它模型;这两种模型应用于心衰和高血压均得到了符合生理事实的结果。结论 四元件模型和改进五元件模型是比较理想的集中参数模型。
Objective To compare some lumped - parameter models often used in simulating input impedance in systemic circulation, and apply the results to heart failure and hypertension. Methods Some methods and criterions, which can ensure the precision in simulation, were introduced to obtain the model parameters with the least square method. Results The precision of Bruttini&Gnudi four - element model and Liu ZR modified five - element model in simulation were better than other models. Physiological facts in heart failure and hypertension were well reflected by these two models. Conclusion Four - element model and modified five - element model are relatively applicable lumped - parameter models.
出处
《医用生物力学》
EI
CAS
CSCD
2003年第1期6-12,共7页
Journal of Medical Biomechanics
