A DYNAMICAL MODEL FOR PULSATILE FLOW ESTIMATION IN A LEFT VENTRICULAR ASSIST DEVICE

Abdul-Hakeem H. AlOmari, Andrey V. Savkin, Dean Karantonis, Nigel H. Lovell, Einly Lim

Abstract

In this paper, we propose a dynamical model for pulsatile flow estimation of an iRBP. Noninvasive measurements of the motor power (VI) and pump impeller rotational speed (w) were acquired from the pump controller and used together with blood hematocrit (HCT) values as inputs to the model. A circulatory mock loop was operated with different aqueous glycerol solutions, mimicking different values of viscosities equivalent to the range of 20 - 50% of human blood HCT, to generate pulsatile flow data. Linear regression between estimated pulsatile flow (Qest ) and measured flow (Qmeas) obtained from the mock loop resulted in a highly significant correlation (R2 = 0.957) and mean absolute error of e = 0.364 L/min. Also, R2 = 0.902 and e = 0.317 L/min were obtained when our model was validated using six sets of ex vivo porcine data. Furthermore, in steady state, the solution of the presented model can be described by a previously designed and verified static model.

References

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Paper Citation


in Harvard Style

H. AlOmari A., V. Savkin A., Karantonis D., Lovell N. and Lim E. (2009). A DYNAMICAL MODEL FOR PULSATILE FLOW ESTIMATION IN A LEFT VENTRICULAR ASSIST DEVICE . In Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2009) ISBN 978-989-8111-65-4, pages 402-405. DOI: 10.5220/0001775604020405


in Bibtex Style

@conference{biosignals09,
author={Abdul-Hakeem H. AlOmari and Andrey V. Savkin and Dean Karantonis and Nigel H. Lovell and Einly Lim},
title={A DYNAMICAL MODEL FOR PULSATILE FLOW ESTIMATION IN A LEFT VENTRICULAR ASSIST DEVICE},
booktitle={Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2009)},
year={2009},
pages={402-405},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001775604020405},
isbn={978-989-8111-65-4},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2009)
TI - A DYNAMICAL MODEL FOR PULSATILE FLOW ESTIMATION IN A LEFT VENTRICULAR ASSIST DEVICE
SN - 978-989-8111-65-4
AU - H. AlOmari A.
AU - V. Savkin A.
AU - Karantonis D.
AU - Lovell N.
AU - Lim E.
PY - 2009
SP - 402
EP - 405
DO - 10.5220/0001775604020405