Investigation on the nasal airflow characteristics of anterior nasal cavity stenosis
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, includ...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Divulgação Científica
2016-08-01
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| Series: | Brazilian Journal of Medical and Biological Research |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000900704&lng=en&tlng=en |
| _version_ | 1818512503994318848 |
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| author | T. Wang D. Chen P.H. Wang J. Chen J. Deng |
| author_facet | T. Wang D. Chen P.H. Wang J. Chen J. Deng |
| author_sort | T. Wang |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-10T23:47:47Z |
| format | Article |
| id | doaj.art-0347cd1ca1364681a0ffda8718cba00e |
| institution | Directory Open Access Journal |
| issn | 1414-431X |
| language | English |
| last_indexed | 2024-12-10T23:47:47Z |
| publishDate | 2016-08-01 |
| publisher | Associação Brasileira de Divulgação Científica |
| record_format | Article |
| series | Brazilian Journal of Medical and Biological Research |
| spelling | doaj.art-0347cd1ca1364681a0ffda8718cba00e2022-12-22T01:28:53ZengAssociação Brasileira de Divulgação CientíficaBrazilian Journal of Medical and Biological Research1414-431X2016-08-0149910.1590/1414-431x20165182S0100-879X2016000900704Investigation on the nasal airflow characteristics of anterior nasal cavity stenosisT. WangD. ChenP.H. WangJ. ChenJ. DengWe 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000900704&lng=en&tlng=enAnterior nasal cavity stenosisComputational fluid dynamicsNasal valve areaAirflow characteristics |
| spellingShingle | T. Wang D. Chen P.H. Wang J. Chen J. Deng Investigation on the nasal airflow characteristics of anterior nasal cavity stenosis Brazilian Journal of Medical and Biological Research Anterior nasal cavity stenosis Computational fluid dynamics Nasal valve area Airflow characteristics |
| title | Investigation on the nasal airflow characteristics of anterior nasal cavity stenosis |
| title_full | Investigation on the nasal airflow characteristics of anterior nasal cavity stenosis |
| title_fullStr | Investigation on the nasal airflow characteristics of anterior nasal cavity stenosis |
| title_full_unstemmed | Investigation on the nasal airflow characteristics of anterior nasal cavity stenosis |
| title_short | Investigation on the nasal airflow characteristics of anterior nasal cavity stenosis |
| title_sort | investigation on the nasal airflow characteristics of anterior nasal cavity stenosis |
| topic | Anterior nasal cavity stenosis Computational fluid dynamics Nasal valve area Airflow characteristics |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000900704&lng=en&tlng=en |
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