Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.resp.2012.06.026
Title: Effect of accessory ostia on maxillary sinus ventilation: A computational fluid dynamics (CFD) study
Authors: Zhu, J.H.
Lee, H.P. 
Lim, K.M. 
Gordon, B.R.
Wang, D.Y.
Keywords: Accessory ostium
CFD simulation
Maxillary sinus airflow
Maxillary sinus ventilation
Ostiomeatal complex
Issue Date: 15-Aug-2012
Source: Zhu, J.H.,Lee, H.P.,Lim, K.M.,Gordon, B.R.,Wang, D.Y. (2012-08-15). Effect of accessory ostia on maxillary sinus ventilation: A computational fluid dynamics (CFD) study. Respiratory Physiology and Neurobiology 183 (2) : 91-99. ScholarBank@NUS Repository. https://doi.org/10.1016/j.resp.2012.06.026
Abstract: We evaluated, by CFD simulation, effects of accessory ostium (AO) on maxillary sinus ventilation. A three-dimensional nasal model was constructed from an adult CT scan with two left maxillary AOs (sinus I) and one right AO (sinus II), then compared to an identical control model with all AOs sealed (sinuses III and IV). Transient simulations of quiet inspiration and expiration at 15. L/min, and nasal blow at 48. L/min, were calculated for both models using low-Reynolds-number turbulent analysis. At low flows, ventilation rates in sinuses with AOs (I. ≈. 0.46. L/min, II. ≈. 0.54. L/min), were both more than a magnitude higher than sinuses without AOs (III. ≈. 0.019. L/min, IV. ≈. 0.020. L/min). Absence of AO almost completely prevented sinus ventilation. Increased ventilation of sinuses with AOs is complex. Under high flow conditions mimicking nose blowing, in sinuses II, III, and IV, the sinus flow rate increased. In contrast, the airflow direction through sinus I reversed between inspiration and expiration, while it remained almost constant throughout the respiration cycle in sinus II. CFD simulation demonstrated that AOs markedly increase maxillary sinus airflow rates and alter sinus air circulation patterns. Whether these airflow changes impact maxillary sinus physiology or pathophysiology is unknown. © 2012 Elsevier B.V.
Source Title: Respiratory Physiology and Neurobiology
URI: http://scholarbank.nus.edu.sg/handle/10635/60026
ISSN: 15699048
DOI: 10.1016/j.resp.2012.06.026
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

12
checked on Dec 12, 2017

Page view(s)

37
checked on Dec 15, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.