Effect of septoplasty or in combination with outfracture of the inferior turbinate on the airflow field and nasal airway
10.3760/cma.j.issn.1673-0860.2011.02.003
- VernacularTitle:鼻中隔矫正术或联合下鼻甲骨折外移术对鼻腔模拟气流场及气道结构影响的分析
- Author:
Ying-Feng SU
1
;
Xiu-Zhen SUN
;
Ying-Xi LIU
;
Shen YU
;
Ji-Zhe WANG
;
Fang SU
Author Information
1. 大连医科大学附属第二医院
- Keywords:
Otorhinolaryngologic surgical procedures;
Air movements;
Nasal cavity
- From:
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
2011;46(2):96-100
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the effect of septoplasty or in combination with outfracture of the inferior turbinate in patients with nasal septum deviation on the airflow field and the nasal airway structure.Methods Six patients with nasal septum deviation underwent spiral CT imaging scans before surgery and during the follow-up.The 3D finite element meshes of the nasal airway were developed from the above CT scans.Given three preconditions,the nasal airflow fields were described by the Navier-Stokes and continuity equations at the inspiratory flow rate of 12 L/ min. The whole airflow patterns were obtained and then compared with the airflow filed and airway structure changes before and after surgery.SPSS 12.0 software was used to analyze the data.Results Before surgery,area of the common airway and the middle and ventral medial regions in the concave side were (1.61 ± 0.18),(0.40 ± 0.10),(0.40 ± 0.14) cm2 respectively,and those of convex side were (1.30 ±0.18),(0.33 ±0.05),(0.36 ±0.10) cm2 respectively.The differences between both sides were of no statistical significance (Z value was 1.782,1.363,0.526 respectively,all P ＞ 0.05).Airflow of the above airways were (361 ± 68),(131 ± 25),(100 ±28) ml respectively in concave side and (178 ± 33),(59 ± 26),(59 ± 18) ml respectively in convex side, which differences were significant statistically (Z value were 2.207,2.201,2.201respectively,all P ＜ 0.05＝.The inferior turbinate in concave side [(0.93 ± 0.10) cm] was statistically (Z=2.214,P＜0.05＝ bigger than that in convex side[(0.58 ±0.12)cm] before surgery.The airflow fields were in disorder in both ill-airways.After surgery,area of the common airway was (2.55 ±0.44) cm2in concave side and (2.20 ± 0.72)cm2 in convex side respectively,and area of the middle and ventral medial regions in the convex side were (0.58 ± 0.13),(0.81 ± 0.26)em2 respectively,which differences were of significance statistically when comparing to areas before surgery (Z value were 2.201,2.201,2.201,2.201,P ＜0.05＝.The airflow passed through nasal airway orderly in both sides.But the thickness of inferior turbinate was (0.73 ±0.08)cm in concave side after surgery,which difference was significant statistically in comparison to that before surgery (Z = 2.264,P ＜ 0.05＝.Consequently,nasal resistance decreased from (0.41 ± 0.03) k Pa · L- 1 · s - 1 to (0.16 ± 0.01) kPa · L -1 · s - 1 after surgery,the difience was significantly(Z = -2.207,P = 0.027).Conclusion Septoplasty or in combination with outfracture of the inferior turbinate,followed by the self-adaptation consecutively,could improve the airway and breathing capacity of the nose.
