Staff View: Computational modelling of flow and tip variations of aortic cannulae in cardiopulmonary bypass procedure

Computational modelling of flow and tip variations of aortic cannulae in cardiopulmonary bypass procedure

Aortic cannulation has been the gold standard for maintaining cardiovascular function during open heart surgery while being connected onto the heart lung machine. These cannulation produces high velocity outflow which may lead to adverse effect on patient condition, especially sandblasting effect on...

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Main Authors:	Thomas, Siti A., Empaling, Shirly, Darlis, Nofrizalidris, Osman, Kahar, Dillon, Jeswant, Taib, Ishkrizat, Md. Khudzari, Ahmad Zahran
Format:	Conference or Workshop Item
Published:	2017
Subjects:	Q Science (General)
Online Access:	http://eprints.utm.my/id/eprint/97195/ http://dx.doi.org/10.1088/1757-899X/243/1/012021
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id	my.utm.97195
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spelling	my.utm.971952022-09-23T03:49:55Z http://eprints.utm.my/id/eprint/97195/ Computational modelling of flow and tip variations of aortic cannulae in cardiopulmonary bypass procedure Thomas, Siti A. Empaling, Shirly Darlis, Nofrizalidris Osman, Kahar Dillon, Jeswant Taib, Ishkrizat Md. Khudzari, Ahmad Zahran Q Science (General) Aortic cannulation has been the gold standard for maintaining cardiovascular function during open heart surgery while being connected onto the heart lung machine. These cannulation produces high velocity outflow which may lead to adverse effect on patient condition, especially sandblasting effect on aorta wall and blood cells damage. This paper reports a novel design that was able to decrease high velocity outflow. There were three design factors of that was investigated. The design factors consist of the cannula type, the flow rate, and the cannula tip design which result in 12 variations. The cannulae type used were the spiral flow inducing cannula and the standard cannula. The flow rates are varied from three to five litres per minute (lpm). Parameters for each cannula variation included maximum velocity within the aorta, pressure drop, wall shear stress (WSS) area exceeding 15 Pa, and impinging velocity on the aorta wall were evaluated. Based on the result, spiral flow inducing cannulae is proposed as a better alternatives due to its ability to reduce outflow velocity. Meanwhile, the pressure drop of all variations are less than the limit of 100 mmHg, although standard cannulae yielded better result. All cannulae show low reading of wall shear stress which decrease the possibilities for atherogenesis formation. In conclusion, as far as velocity is concerned, spiral flow is better compared to standard flow across all cannulae variations. 2017 Conference or Workshop Item PeerReviewed Thomas, Siti A. and Empaling, Shirly and Darlis, Nofrizalidris and Osman, Kahar and Dillon, Jeswant and Taib, Ishkrizat and Md. Khudzari, Ahmad Zahran (2017) Computational modelling of flow and tip variations of aortic cannulae in cardiopulmonary bypass procedure. In: 2nd International Conference on Computational Fluid Dynamics in Research and Industry, CFDRI 2017, 3 - 4 August 2017, Songkhla, Thailand. http://dx.doi.org/10.1088/1757-899X/243/1/012021
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	Q Science (General)
spellingShingle	Q Science (General) Thomas, Siti A. Empaling, Shirly Darlis, Nofrizalidris Osman, Kahar Dillon, Jeswant Taib, Ishkrizat Md. Khudzari, Ahmad Zahran Computational modelling of flow and tip variations of aortic cannulae in cardiopulmonary bypass procedure
description	Aortic cannulation has been the gold standard for maintaining cardiovascular function during open heart surgery while being connected onto the heart lung machine. These cannulation produces high velocity outflow which may lead to adverse effect on patient condition, especially sandblasting effect on aorta wall and blood cells damage. This paper reports a novel design that was able to decrease high velocity outflow. There were three design factors of that was investigated. The design factors consist of the cannula type, the flow rate, and the cannula tip design which result in 12 variations. The cannulae type used were the spiral flow inducing cannula and the standard cannula. The flow rates are varied from three to five litres per minute (lpm). Parameters for each cannula variation included maximum velocity within the aorta, pressure drop, wall shear stress (WSS) area exceeding 15 Pa, and impinging velocity on the aorta wall were evaluated. Based on the result, spiral flow inducing cannulae is proposed as a better alternatives due to its ability to reduce outflow velocity. Meanwhile, the pressure drop of all variations are less than the limit of 100 mmHg, although standard cannulae yielded better result. All cannulae show low reading of wall shear stress which decrease the possibilities for atherogenesis formation. In conclusion, as far as velocity is concerned, spiral flow is better compared to standard flow across all cannulae variations.
format	Conference or Workshop Item
author	Thomas, Siti A. Empaling, Shirly Darlis, Nofrizalidris Osman, Kahar Dillon, Jeswant Taib, Ishkrizat Md. Khudzari, Ahmad Zahran
author_facet	Thomas, Siti A. Empaling, Shirly Darlis, Nofrizalidris Osman, Kahar Dillon, Jeswant Taib, Ishkrizat Md. Khudzari, Ahmad Zahran
author_sort	Thomas, Siti A.
title	Computational modelling of flow and tip variations of aortic cannulae in cardiopulmonary bypass procedure
title_short	Computational modelling of flow and tip variations of aortic cannulae in cardiopulmonary bypass procedure
title_full	Computational modelling of flow and tip variations of aortic cannulae in cardiopulmonary bypass procedure
title_fullStr	Computational modelling of flow and tip variations of aortic cannulae in cardiopulmonary bypass procedure
title_full_unstemmed	Computational modelling of flow and tip variations of aortic cannulae in cardiopulmonary bypass procedure
title_sort	computational modelling of flow and tip variations of aortic cannulae in cardiopulmonary bypass procedure
publishDate	2017
url	http://eprints.utm.my/id/eprint/97195/ http://dx.doi.org/10.1088/1757-899X/243/1/012021
_version_	1745562349993984000
score	13.251813

Computational modelling of flow and tip variations of aortic cannulae in cardiopulmonary bypass procedure

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