Sensitivity Analysis and Improved Identification of a Systemic Arterial Model

An identification scheme for the determination of several parameters associated with a third-order lumped-parameter model of the systemic arterial system has been developed previously [1]. In the present study a parameter sensitivity analysis of this model is conducted in conjunction with the identification scheme. This analysis indicates that the state variables of this system are indeed sensitive to changes in the model parameters and initial conditions, but not unduly so. It also indicates the relative sensitivities of individual model parameters and provides valuable insight into the behavior of the arterial model. This insight has resulted in a significant simplification and modification of our identification scheme [1] that makes it more likely to be employed in practice.