Department of Otolaryngology-Head and Neck Surgery, 117902Beijing Tongren Hospital, Capital Medical University, Beijing, China.
Department of Otolaryngology-Head and Neck Surgery, 1466Johns Hopkins School of Medicine, Baltimore, MD, USA.
Ear Nose Throat J. 2021 Jul;100(6):NP283-NP289. doi: 10.1177/0145561319872745. Epub 2019 Sep 30.
Nasal septal deviations (NSD) have been categorized into 7 types. The effect of these different deviations on airflow pattern and warming function has not been fully investigated. The purpose of this study was to utilize a computational fluid dynamics approach to assess the impact of NSD of varying types on nasal airflow and warming function. Patients with each type of NSD were enrolled in the study, and a normal participant as the control. Using a computational fluid dynamics approach, modeling of nasal function was performed. Indices of nasal function including airflow redistribution, total nasal resistance, airflow velocity, and airflow temperature were determined. Among all types of NSD, the maximal velocity and total nasal resistance were markedly higher in type 4 and 7 deviations. The flow partition and velocity distribution were also altered in type 4 and 7 as well as type 2 and 6 deviations. Airflow in all categories of NSD was fully warmed to a similar degree. From a computational aerodynamics perspective, the type of septal deviation may contribute to altered airflow characteristics. However, warming function was similar between septal deviation types. Future studies will help to ascertain the functional importance of septal deviation types and the applicability of these computational studies.
鼻中隔偏曲（NSD）可分为 7 种类型。这些不同偏曲对气流模式和加热功能的影响尚未得到充分研究。本研究旨在利用计算流体动力学方法评估不同类型 NSD 对鼻腔气流和加热功能的影响。研究纳入了每种 NSD 类型的患者，并以正常参与者作为对照。通过计算流体动力学方法，对鼻腔功能进行建模。确定了包括气流再分配、总鼻阻力、气流速度和气流温度在内的鼻腔功能指标。在所有类型的 NSD 中，第 4 型和第 7 型的最大速度和总鼻阻力明显更高。第 4 型和第 7 型以及第 2 型和第 6 型的气流分配和速度分布也发生了改变。所有 NSD 类别的气流都被充分加热到相似的程度。从计算空气动力学的角度来看，鼻中隔偏曲的类型可能会导致气流特征发生改变。然而，鼻中隔偏曲类型之间的加热功能相似。未来的研究将有助于确定鼻中隔偏曲类型的功能重要性以及这些计算研究的适用性。
