Computational aerodynamics of long segment congenital tracheal stenosis with bridging bronchus

Limin Zhu; Jinlong Liu; Weimin Zhang; Qi Sun; Haifa Hong; Zhou Du; Jinfen Liu; Yi Qian; Qian Wang; Mitsuo Umezu

doi:10.1109/ASCC.2015.7244879

Computational aerodynamics of long segment congenital tracheal stenosis with bridging bronchus

Limin Zhu, Jinlong Liu, Weimin Zhang, Qi Sun, Haifa Hong, Zhou Du, Jinfen Liu^*, Yi Qian, Qian Wang, Mitsuo Umezu

^*Corresponding author for this work

Faculty of Medicine, Health and Human Sciences

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

4 Citations (Scopus)

Abstract

Long segment congenital tracheal stenosis (LSCTS) is one of most severe malformation with high mortality rate and dismal prospective. Hypoventilation is the main issue for the death of children with LSCTS after surgical correction. However, currently, little information is available on local aerodynamics to disclose the reasons for the improvement of such therapies, especially LSCTS with distal bronchus stenoses. Here, we investigated a patient-specific model of LSCTS with complete tracheal rings and bridging bronchus (BB). Computational fluid dynamics (CFD) was applied to analyze the local aerodynamics around BB before and after tracheal surgery in inspiratory phase and expiratory phase. Average pressure drop, wall shear stress, streamlines and energy loss were calculated to evaluate the surgical outcomes. The results indicate the airflow at the trachea and BB become more turbulent in expiration phase than that in inspiration phase. The turbulence increases the workloads of respiration in expiration phase. It should be the cause for postoperative hypoventilation. To study the local aerodynamics is helpful for the improvement of surgical therapies of the LSCTS.

Original language	English
Title of host publication	2015 10th Asian control conference
Subtitle of host publication	Emerging control techniques for a sustainable world, ASCC 2015
Editors	AC Soh, H Selamat, RZA Rahman, AJ Ishak, SA Ahmad, HRH Ramli, AAM Faudzi
Place of Publication	United States
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	1-5
Number of pages	5
ISBN (Electronic)	9781479978625
ISBN (Print)	9781479978632
DOIs	https://doi.org/10.1109/ASCC.2015.7244879
Publication status	Published - Sept 2015
Event	10th Asian Control Conference, ASCC 2015 - Kota Kinabalu, Malaysia Duration: 31 May 2015 → 3 Jun 2015

Other

Other	10th Asian Control Conference, ASCC 2015
Country/Territory	Malaysia
City	Kota Kinabalu
Period	31/05/15 → 3/06/15

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10.1109/ASCC.2015.7244879

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Zhu, L., Liu, J., Zhang, W., Sun, Q., Hong, H., Du, Z., Liu, J., Qian, Y., Wang, Q., & Umezu, M. (2015). Computational aerodynamics of long segment congenital tracheal stenosis with bridging bronchus. In AC. Soh, H. Selamat, RZA. Rahman, AJ. Ishak, SA. Ahmad, HRH. Ramli, & AAM. Faudzi (Eds.), 2015 10th Asian control conference: Emerging control techniques for a sustainable world, ASCC 2015 (pp. 1-5). Article 7244879 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ASCC.2015.7244879

Zhu, Limin ; Liu, Jinlong ; Zhang, Weimin et al. / Computational aerodynamics of long segment congenital tracheal stenosis with bridging bronchus. 2015 10th Asian control conference: Emerging control techniques for a sustainable world, ASCC 2015. editor / AC Soh ; H Selamat ; RZA Rahman ; AJ Ishak ; SA Ahmad ; HRH Ramli ; AAM Faudzi. United States : Institute of Electrical and Electronics Engineers (IEEE), 2015. pp. 1-5

@inproceedings{c9f028da2706453484bbea00d72e44a5,

title = "Computational aerodynamics of long segment congenital tracheal stenosis with bridging bronchus",

abstract = "Long segment congenital tracheal stenosis (LSCTS) is one of most severe malformation with high mortality rate and dismal prospective. Hypoventilation is the main issue for the death of children with LSCTS after surgical correction. However, currently, little information is available on local aerodynamics to disclose the reasons for the improvement of such therapies, especially LSCTS with distal bronchus stenoses. Here, we investigated a patient-specific model of LSCTS with complete tracheal rings and bridging bronchus (BB). Computational fluid dynamics (CFD) was applied to analyze the local aerodynamics around BB before and after tracheal surgery in inspiratory phase and expiratory phase. Average pressure drop, wall shear stress, streamlines and energy loss were calculated to evaluate the surgical outcomes. The results indicate the airflow at the trachea and BB become more turbulent in expiration phase than that in inspiration phase. The turbulence increases the workloads of respiration in expiration phase. It should be the cause for postoperative hypoventilation. To study the local aerodynamics is helpful for the improvement of surgical therapies of the LSCTS.",

author = "Limin Zhu and Jinlong Liu and Weimin Zhang and Qi Sun and Haifa Hong and Zhou Du and Jinfen Liu and Yi Qian and Qian Wang and Mitsuo Umezu",

year = "2015",

month = sep,

doi = "10.1109/ASCC.2015.7244879",

language = "English",

isbn = "9781479978632",

pages = "1--5",

editor = "AC Soh and H Selamat and RZA Rahman and AJ Ishak and SA Ahmad and HRH Ramli and AAM Faudzi",

booktitle = "2015 10th Asian control conference",

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address = "United States",

note = "10th Asian Control Conference, ASCC 2015 ; Conference date: 31-05-2015 Through 03-06-2015",

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Zhu, L, Liu, J, Zhang, W, Sun, Q, Hong, H, Du, Z, Liu, J, Qian, Y, Wang, Q & Umezu, M 2015, Computational aerodynamics of long segment congenital tracheal stenosis with bridging bronchus. in AC Soh, H Selamat, RZA Rahman, AJ Ishak, SA Ahmad, HRH Ramli & AAM Faudzi (eds), 2015 10th Asian control conference: Emerging control techniques for a sustainable world, ASCC 2015., 7244879, Institute of Electrical and Electronics Engineers (IEEE), United States, pp. 1-5, 10th Asian Control Conference, ASCC 2015, Kota Kinabalu, Malaysia, 31/05/15. https://doi.org/10.1109/ASCC.2015.7244879

Computational aerodynamics of long segment congenital tracheal stenosis with bridging bronchus. / Zhu, Limin; Liu, Jinlong; Zhang, Weimin et al.
2015 10th Asian control conference: Emerging control techniques for a sustainable world, ASCC 2015. ed. / AC Soh; H Selamat; RZA Rahman; AJ Ishak; SA Ahmad; HRH Ramli; AAM Faudzi. United States: Institute of Electrical and Electronics Engineers (IEEE), 2015. p. 1-5 7244879.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

TY - GEN

T1 - Computational aerodynamics of long segment congenital tracheal stenosis with bridging bronchus

AU - Zhu, Limin

AU - Liu, Jinlong

AU - Zhang, Weimin

AU - Sun, Qi

AU - Hong, Haifa

AU - Du, Zhou

AU - Liu, Jinfen

AU - Qian, Yi

AU - Wang, Qian

AU - Umezu, Mitsuo

PY - 2015/9

Y1 - 2015/9

N2 - Long segment congenital tracheal stenosis (LSCTS) is one of most severe malformation with high mortality rate and dismal prospective. Hypoventilation is the main issue for the death of children with LSCTS after surgical correction. However, currently, little information is available on local aerodynamics to disclose the reasons for the improvement of such therapies, especially LSCTS with distal bronchus stenoses. Here, we investigated a patient-specific model of LSCTS with complete tracheal rings and bridging bronchus (BB). Computational fluid dynamics (CFD) was applied to analyze the local aerodynamics around BB before and after tracheal surgery in inspiratory phase and expiratory phase. Average pressure drop, wall shear stress, streamlines and energy loss were calculated to evaluate the surgical outcomes. The results indicate the airflow at the trachea and BB become more turbulent in expiration phase than that in inspiration phase. The turbulence increases the workloads of respiration in expiration phase. It should be the cause for postoperative hypoventilation. To study the local aerodynamics is helpful for the improvement of surgical therapies of the LSCTS.

AB - Long segment congenital tracheal stenosis (LSCTS) is one of most severe malformation with high mortality rate and dismal prospective. Hypoventilation is the main issue for the death of children with LSCTS after surgical correction. However, currently, little information is available on local aerodynamics to disclose the reasons for the improvement of such therapies, especially LSCTS with distal bronchus stenoses. Here, we investigated a patient-specific model of LSCTS with complete tracheal rings and bridging bronchus (BB). Computational fluid dynamics (CFD) was applied to analyze the local aerodynamics around BB before and after tracheal surgery in inspiratory phase and expiratory phase. Average pressure drop, wall shear stress, streamlines and energy loss were calculated to evaluate the surgical outcomes. The results indicate the airflow at the trachea and BB become more turbulent in expiration phase than that in inspiration phase. The turbulence increases the workloads of respiration in expiration phase. It should be the cause for postoperative hypoventilation. To study the local aerodynamics is helpful for the improvement of surgical therapies of the LSCTS.

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U2 - 10.1109/ASCC.2015.7244879

DO - 10.1109/ASCC.2015.7244879

M3 - Conference proceeding contribution

AN - SCOPUS:84957683872

SN - 9781479978632

SP - 1

EP - 5

BT - 2015 10th Asian control conference

A2 - Soh, AC

A2 - Selamat, H

A2 - Rahman, RZA

A2 - Ishak, AJ

A2 - Ahmad, SA

A2 - Ramli, HRH

A2 - Faudzi, AAM

PB - Institute of Electrical and Electronics Engineers (IEEE)

CY - United States

T2 - 10th Asian Control Conference, ASCC 2015

Y2 - 31 May 2015 through 3 June 2015

ER -

Zhu L, Liu J, Zhang W, Sun Q, Hong H, Du Z et al. Computational aerodynamics of long segment congenital tracheal stenosis with bridging bronchus. In Soh AC, Selamat H, Rahman RZA, Ishak AJ, Ahmad SA, Ramli HRH, Faudzi AAM, editors, 2015 10th Asian control conference: Emerging control techniques for a sustainable world, ASCC 2015. United States: Institute of Electrical and Electronics Engineers (IEEE). 2015. p. 1-5. 7244879 doi: 10.1109/ASCC.2015.7244879

Computational aerodynamics of long segment congenital tracheal stenosis with bridging bronchus

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