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Effect of tracheal stenosis at different locations on airflow in the trachea and main bronchi

Johari, Nasrul Hadi and Mhd. Nor, Wan Mohd Basri and Osman, Kahar and Mohd. Salleh, Zuliazura and Helmi, Mohd. Haris and Abdul Kadir, Mohammed Rafiq (2012) Effect of tracheal stenosis at different locations on airflow in the trachea and main bronchi. AIP Conference Proceedings, 1440 . pp. 1325-1332. ISSN 0094-243X

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Official URL: http://dx.doi.org/10.1166/asl.2013.5100


The location and size of tracheal stenosis are among the major factors that contribute significantly to the breathing difficulties. Hence, this study aims to establish correlation between the location and size of the stenosis to the possibility of breathing difficulties. This work used ideal trachea model based on realistic trachea model derived from Computed Tomography (CT) scan images. The stenosis was patched to the healthy trachea models at regular locations and sizes as proposed by medical practitioners. The changes in the flow behavior due to the different sizes and locations of the stenosis were then examined to determine the pattern of possible breathing difficulties. The present simulation confirms that the overall flow behavior could be significantly affected if the size of stenosis is more than 60% for location far from the bifurcation region, and at size of 50% for location close to the bifurcation region. The outcomes of this study may help the medical practitioners and researchers to understand how dramatic increase in pressure drops occurs inside the trachea and main bronchi with the presence of stenosis at different location and size.

Item Type:Article
Uncontrolled Keywords:AIP
Subjects:T Technology > TL Motor vehicles. Aeronautics. Astronautics
Divisions:Mechanical Engineering
ID Code:46879
Deposited By: Haliza Zainal
Deposited On:22 Jun 2015 05:56
Last Modified:26 Sep 2017 04:23

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