Numerical analysis for the effcacy of nasal surgery in obstructive sleep apnea hypopnea syndrome

作     者：Shen Yu Ying-Xi Liu Xiu-Zhen Sun Ying-Feng Su Ying Wang Yin-Zhe Gai 

作者机构：State Key Laboratory of Structural Analysis for Industrial Equipment Dalian University of Technology Department of OtorhinalaryngologyThe Second Affiliated Hospital of Dalian Medical University 

出 版 物：《Acta Mechanica Sinica》 (力学学报（英文版）)

年 卷 期：2014年第30卷第2期

页      面：250-258页

核心收录：

学科分类：1002[医学-临床医学] 100213[医学-耳鼻咽喉科学] 10[医学] 

基　　金：supported by the National Natural Science Foundation of China(10902022,11072055,and 11032008) the Fundamental Research Funds for the Central Universities(DUT13LK49) 

主　　题：Nasal surgery Obstructive sleep apnea hypop nea syndrome Fluid solid interaction Numerical analysis 

摘      要：In the present study, we reconstructed upper airway and soft palate models of 3 obstructive sleep apnea-hypopnea syndrome（OSAHS） patients with nasal obstruction. The airflow distribution and movement of the soft palate before and after surgery were described by a numerical simulation method. The curative effect of nasal surgery was evaluated for the three patients with OSAHS. The degree of nasal obstruction in the 3 patients was improved after surgery. For 2 patients with mild OSAHS, the upper airway resistance and soft palate displacement were reduced after surgery. These changes contributed to the mitigation of respiratory airflow limitation. For the patient with severe OSAHS, the upper airway resistance and soft palate displacement increased after surgery, which aggravated the airway obstruction. The effcacy of nasal surgery for patients with OSAHS is determined by the degree of improvement in nasal obstruction and whether the effects on the pharynx are beneficial. Numerical simulation results are consistent with the polysomnogram（PSG） test results, chief complaints, and clinical findings, and can indirectly reflect the degree of nasal patency and improvement of snoring symptoms, and further,provide a theoretical basis to solve relevant clinical problems.