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Use of computational fluid dynamics to study the influence of the uncinate process on nasal airflow

Published online by Cambridge University Press:  27 September 2010

G-X Xiong ,
J-M Zhan ,
K-J Zuo ,
L-W Rong ,
J-F Li  and
G Xu
G-X Xiong
Affiliation:
Otorhinolaryngology Hospital, First Affiliated Hospital, Otorhinolaryngology Institute, Sun Yat-sen University, Guangzhou, China
J-M Zhan
Affiliation:
Department of Mechanics, Sun Yat-sen University, Guangzhou, China
K-J Zuo
Affiliation:
Otorhinolaryngology Hospital, First Affiliated Hospital, Otorhinolaryngology Institute, Sun Yat-sen University, Guangzhou, China
L-W Rong
Affiliation:
Department of Mechanics, Sun Yat-sen University, Guangzhou, China
J-F Li
Affiliation:
Department of Mechanics, Sun Yat-sen University, Guangzhou, China
G Xu*
Affiliation:
Otorhinolaryngology Hospital, First Affiliated Hospital, Otorhinolaryngology Institute, Sun Yat-sen University, Guangzhou, China
*
Address for correspondence: Dr Geng Xu, Otorhinolaryngology Hospital, First Affiliated Hospital of Sun Yat-sen University, Otorhinolaryngology Institute of Sun Yat-sen University, Guangzhou 510080, China Fax:  + 86 20 87333733 E-mail: entxgfess@163.com
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Abstract

Background:

Chronic rhinosinusitis is commonly treated by functional endoscopic sinus surgery involving excision of the uncinate process and opening of the osteomeatal complex.

Methods:

Computational fluid dynamics were used to compare nasal airflow after two different surgical interventions which involved opening the paranasal sinuses, excising the ethmoid sinus, and excising or preserving the uncinate process, in a cadaveric head model. Cross-sectional computed tomography images were obtained before and after the interventions. Imaging data were used to prepare computer simulations, which were used to assess the airflow characteristics of the nasal cavities and paranasal sinuses during inspiration and expiration, before and after intervention.

Results:

Significantly larger nasal cavity airflow velocity changes were apparent following the uncinate process excising procedure. Nasal cavity airflow distribution remained relatively unchanged following the uncinate process preserving procedure. There was a significantly greater increase in airflow volume following the uncinate process excising procedure, compared with the uncinate process preserving procedure.

Conclusion:

Preservation of the uncinate process may significantly reduce the alteration of nasal cavity airflow dynamics occurring after functional endoscopic sinus surgery for chronic rhinosinusitis.

Keywords

Nasal CavityAirflowUncinate ProcessEndoscopy
Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 125 , Issue 1 , January 2011 , pp. 30 - 37
Copyright
Copyright © JLO (1984) Limited 2010

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