Airflow and temperature distribution inside the maxillary sinus: A computational fluid dynamics simulation

Zang, Hongrui; Liu, Yingxi; Han, Demin; Zhang, Luo; Wang, Tong; Sun, Xuegang; Li, Lifeng

doi:10.3109/00016489.2011.651228

Cited by 16 publications

(17 citation statements)

References 11 publications

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“…Like other authors, we did not detect any velocity in the maxillary, frontal, ethmoidal, or sphenoidal sinuses, showing that almost no air passes into the sinuses whatever the phase of respiratory cycle or direction of exchange . However, our results provide new clues into how very slight movements are created by dynamic pressure variations that induce a pumping effect during the respiratory cycles.…”

Section: Discussionsupporting

confidence: 82%

“…Computational fluid dynamics (CFD) provide a description of the movements of fluids, their properties, physical characteristics, interactions, and all the forces they are subjected to . Fluid dynamics assessment offers valuable insights into the characteristics of airflow in the nasal passages and provides a better understanding of the nasal physiology and physiopathology of certain pathologies . However, research to date has focused on the physical phenomena occurring in pathological sinonasal conditions, whereas many questions remain regarding the physiological mechanisms prevailing in a healthy nose .…”

Section: Review Of Computational Fluid Dynamics‐simulated Research Inmentioning

confidence: 99%

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Numerical simulation of two consecutive nasal respiratory cycles: toward a better understanding of nasal physiology

Gabory

Reville

Baux

et al. 2018

Int Forum Allergy Rhinol

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Section: Discussionsupporting

confidence: 82%

Section: Review Of Computational Fluid Dynamics‐simulated Research Inmentioning

confidence: 99%

Numerical simulation of two consecutive nasal respiratory cycles: toward a better understanding of nasal physiology

Gabory

Reville

Baux

et al. 2018

Int Forum Allergy Rhinol

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“…Previous reports have shown that the model which was affected by fluid-solid coupling, was generally simplified ( 9 ). Zang H et al ( 3 ) claimed that the normal nasal cavity has a certain heating and humidifying effect. However, through the inspection of the Grashof number, Prandtl number, as well as the analysis of heat transfer, the authors concluded that temperature and humidity had no significant effect on the internal nasal airflow under normal breathing conditions.…”

Section: Discussionmentioning

confidence: 99%

“…However, the airflow profiles of anterior nasal cavity stenosis and their correlation with clinical symptoms have not been well investigated due to the anatomical complexity of the nasal cavity. In recent years, with the development of computational fluid dynamics (CFD) and biological numerical simulation methods, many researchers have employed these methods to study nasal physiological function and the influence of nasal structure change on the airflow distribution ( 1 ) and nasal heating function ( 2 – 4 ).…”

Section: Introductionmentioning

confidence: 99%

Investigation on the nasal airflow characteristics of anterior nasal cavity stenosis

Wang

Chen

Wang

et al. 2016

Braz J Med Biol Res

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We used a computational fluid dynamics (CFD) model to study the inspiratory airflow profiles of patients with anterior nasal cavity stenosis who underwent curative surgery, by comparing pre- and postoperative airflow characteristics. Twenty patients with severe anterior nasal cavity stenosis, including one case of bilateral stenosis, underwent computed tomography (CT) scans for CFD modelling. The pre- and postoperative airflow characteristics of the nasal cavity were simulated and analyzed. The narrowest area of the nasal cavity in all 20 patients was located within the nasal valve area, and the mean cross-sectional area increased from 0.39 cm2 preoperative to 0.78 cm2 postoperative (P<0.01). Meanwhile, the mean airflow velocity in the nasal valve area decreased from 6.19 m/s to 2.88 m/s (P<0.01). Surgical restoration of the nasal symmetry in the bilateral nasal cavity reduced nasal resistance in the narrow sides from 0.24 Pa.s/mL to 0.11 Pa.s/mL (P<0.01). Numerical simulation of the nasal cavity in patients with anterior nasal cavity stenosis revealed structural changes and the resultant patterns of nasal airflow. Surgery achieved balanced bilateral nasal ventilation and decreased nasal resistance in the narrow region of the nasal cavity. The correction of nasal valve stenosis is not only indispensable for reducing nasal resistance, but also the key to obtain satisfactory curative effect.

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“…Some authors exclude the maxillary recess in their analysis of internal nasal SA (e.g., Adams, ). In humans, the maxillary sinus receives only a small amount of airflow during respiratory cycles (Zang et al, ). The frontal recess and the sinus that may expand from it are less understood in terms of airflow.…”

Section: Discussionmentioning

confidence: 99%

Nasal Morphometry in Marmosets: Loss and Redistribution of Olfactory Surface Area

Smith

Eiting

Bonar

et al. 2014

The Anatomical Record

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The two major groups of primates differ in internal nasal anatomy. Strepsirrhines (e.g., lemurs) have more numerous turbinals and recesses compared with haplorhines (e.g., monkeys). Since detailed quantitative comparisons of nasal surface area (SA) have not been made, we measured mucosa in serially sectioned monkeys (Callithrix jacchus, Cebuella pygmaea). Data were compared with previously published findings on the mouse lemur, Microcebus murinus. The nasal airways were digitally reconstructed using computed tomography scanned heads of Cebuella and Microcebus. In addition, morphometric and functional analyses were carried out using segmented photographs of the histological sections of Cebuella and Microcebus. The SA of the ethmoturbinal complex is about half as large in marmosets compared with Microcebus, and is covered with less olfactory mucosa (18%-24% in marmosets, compared with 50% in Microcebus). Whereas the ethmoturbinal complex of Microcebus bears half of the total olfactory mucosa in the nasal airway, most (80%) olfactory mucosa is distributed on other surfaces in the marmosets (e.g., nasal septum). A comparison to previously published data suggests all primate species have less olfactory surface area (OSA) compared with other similar-sized mammals, but this is especially true of marmosets. Taken together, these findings support the hypothesis that there is a reduced OSA in at least some haplorhines, and this can be linked to diminished posterosuperior dimensions of the nasal fossae. However, haplorhines may have minimized their olfactory loss by redistributing olfactory mucosa on non-turbinal surfaces. Our findings also imply

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Airflow and temperature distribution inside the maxillary sinus: A computational fluid dynamics simulation

Cited by 16 publications

References 11 publications

Numerical simulation of two consecutive nasal respiratory cycles: toward a better understanding of nasal physiology

Numerical simulation of two consecutive nasal respiratory cycles: toward a better understanding of nasal physiology

Investigation on the nasal airflow characteristics of anterior nasal cavity stenosis

Nasal Morphometry in Marmosets: Loss and Redistribution of Olfactory Surface Area

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