Title :
Flow rate prediction of a percutaneous ventricular assist device using nonlinear circuit analysis
Author :
Mushi, Simon ; Yu, Yih-Choung ; Simaan, Marwan A. ; Zorn, Nicholas V.
Author_Institution :
Dept. of Electr. & Comput. Eng., Lafayette Coll., Easton, PA, USA
Abstract :
In this paper, a percutaneous ventricular assist system, including a centrifugal blood pump, an atrial drainage cannula, and different sizes of arterial perfusion cannulae, is modeled as a nonlinear circuit. This model is used to predict the blood flow rate through the device under various pre-specified left atrial pressure (LAP), mean arterial pressure (MAP), and pump speed. The flow rate is predicted by solving a quadratic equation while coefficients in the equation are scaled, depending on the arterial cannula configurations. The predictions are compared with data from a fluid circulation experiment. The error indices are less than 6% in all of the test configurations.
Keywords :
blood vessels; haemodynamics; nonlinear network analysis; orthotics; arterial perfusion cannulae; atrial drainage cannula; centrifugal blood pump speed; flow rate prediction; fluid circulation experiment; left atrial pressure; mean arterial pressure; nonlinear circuit analysis; percutaneous ventricular assist device; quadratic equation; Arteries; Blood; Circuit analysis; Leg; Nonlinear circuits; Nonlinear equations; Predictive models; Pumps; Resistors; Voltage;
Conference_Titel :
Bioengineering Conference, 2005. Proceedings of the IEEE 31st Annual Northeast
Print_ISBN :
0-7803-9105-5
Electronic_ISBN :
0-7803-9106-3
DOI :
10.1109/NEBC.2005.1431925