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[Simulation of inferior turbinate reduction using computational fluid dynamics methods].

Y F Guo1, Y M Shan2, H K Cai3

  • 1Department of Otolaryngology, Xiamen Children's Hospital, Xiamen, 361000, China.

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi = Journal of Clinical Otorhinolaryngology Head and Neck Surgery
|June 6, 2018
PubMed
Summary

Computational fluid dynamic models show that a specific surgical technique (model C) for unilateral inferior turbinate reduction (ITR) significantly improves nasal airflow and pressure compared to another method (model B). This technique better restores nasal anatomy and airflow physiology.

Keywords:
computational fluid dynamicsinferior turbinatethree-dimensional reconstruction

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Area of Science:

  • Otolaryngology
  • Biomedical Engineering
  • Fluid Dynamics

Background:

  • Inferior turbinate hypertrophy can cause nasal obstruction.
  • Surgical reduction of the inferior turbinate aims to improve nasal airflow.
  • Different surgical techniques may yield varying aerodynamic outcomes.

Purpose of the Study:

  • To compare the aerodynamic effects of two computational fluid dynamic (CFD) models for unilateral inferior turbinate reduction (ITR).
  • To evaluate the influence of different tissue removal methods on nasal airflow and pressure.

Main Methods:

  • Construction of two CFD models (Model B and Model C) representing different unilateral inferior turbinate reduction techniques.
  • Simulation of nasal airflow distribution using Fluent 6.3.26 before and after simulated ITR.
  • Analysis of cross-sectional area, intranasal pressures, airflow volume, and airflow speed.

Main Results:

  • Both models increased the inferior nasal meatus cross-sectional area, with Model C showing a larger average increase (0.89 cm²) than Model B (0.36 cm²).
  • Model C resulted in less reduction in intranasal pressures (approx. 3 Pa) compared to Model B and the original model (approx. 8 Pa).
  • Model C predicted greater airflow in the affected nasal passage (approx. 80 ml/s) and improved anterior valve region airspeed with increased vortex formation.

Conclusions:

  • Model C, representing a specific ITR technique, is superior to Model B in restoring normal nasal cavity anatomy and ventilation physiology.
  • Restoring normal nasal anatomy is crucial for effective outcomes in inferior turbinate reduction surgery.