Influence of uncinate process on aerodynamic characteristics of nasal cavity and maxillary sinus
10.3760/cma.j.issn.1673-0860.2009.01.005
- VernacularTitle:钩突对鼻腔及上颌窦气流力学的影响
- Author:
Guan-Xia XIONG
1
;
Jian-Feng LI
;
Jie-Min ZHAN
;
Guang-Li JIANG
;
Liang-Wan RONG
;
Geng XU
Author Information
1. 中山大学附属第一医院(耳鼻咽喉科医院)
- Keywords:
Nasal cavity;
Maxillary sinus;
Respiratory mechanics;
Uncinate process
- From:
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
2009;44(1):10-15
- CountryChina
- Language:Chinese
-
Abstract:
Objective This study aimed to investigate the influence of uncinate process on air flow velocity, trace, distribution, air pressure, as well as the air flow exchange of nasal cavity and paranasal sinuses. Methods Fluent software was used to simulate two nasal cavity and paranasal sinus structures following CT scanning, one hod normal nasal cavity, the another had the nasal cavity with uncinate process removde. Air flow velocity, essure, distribution and trace lines were calculated and compared by avierStokes equation and numerically visualized between two odels. Results Air flow of two models in the ommon and middle meatus accounted for more than 50% and 30% of total nasal cavity flow. Flow velocity of two models were aximal in the common eatus, followed by the middle meatus. The maximal velocity xisted on the left nasal district between limen nasi and head of inferior turbinate. The flow traces of two medels were similar. In the normal model, the air flow velocity of the district around uncinate process was almost the same in inhale and exhale. In the model with the uncinate process removed, the air flow velocity of the district around uncinate process was faster, the air flow velocity in expiratory phase was quicker. Compared with the normal nasal cavity, there was more exchange of maxillary sinus in the model with cut uncinate process. Conclusions In the view of flow dynamics, the uncinate process effect sthe air flow velocity of the district around uncinate process and the exchange of maxillary sinus, the contribution of nasal flow is connected with the morphosis of the uncinate process.
