Simulation of motor current waveform as an index for aortic valve open-close condition during ventricular support

Author

Alonazi, Khalid A. ; Lovell, Nigel H. ; Dokos, Socrates

Author_Institution

Grad. Sch. of Biomed. Eng., Univ. of New South Wales, Sydney, NSW, Australia

fYear

2014

fDate

26-30 Aug. 2014

Firstpage

3013

Lastpage

3016

Abstract

Monitoring of aortic valve (AV) opening and closure during heart pump support by a left ventricular assist device (LVAD) is crucial in preventing adverse events such as thrombus formation near the AV. In preventing adverse events such as thrombus formation near the AV. In this paper, simulations of LVAD motor current waveform were undertaken to evaluate its suitability for ascertaining aortic valve status. A two-dimensional fluid-structure interaction finite-element model is presented to predict AV closure during LVAD outflow, useful in the development of a pump speed controller.

Keywords

biomedical equipment; blood; cardiology; finite element analysis; flow simulation; haemodynamics; patient monitoring; prosthetics; waveform analysis; LVAD motor current waveform; LVAD outflow; aortic valve closure monitoring; aortic valve open-close condition index; aortic valve opening monitoring; ascertaining aortic valve status; heart pump support; left ventricular assist device; motor current waveform simulation; pump speed controller; thrombus formation; two-dimensional fluid-structure interaction finite-element model; ventricular support; Blood; Computational modeling; Equations; Fluids; Heart; Mathematical model; Valves;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society (EMBC), 2014 36th Annual International Conference of the IEEE

Conference_Location

Chicago, IL

ISSN

1557-170X

Type

conf

DOI

10.1109/EMBC.2014.6944257

Filename

6944257