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Numerical analysis of the ostiomeatal complex aeration using the CFD method.

Dmitry Tretiakow1, Krzysztof Tesch2, Karolina Markiet3

  • 1Department of Otolaryngology, Medical University of Gdansk, Gdańsk, Poland. d.tret@gumed.edu.pl.

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Computational fluid dynamics (CFD) simulations reveal that nasal septal deviation (NSD) causes turbulent airflow in the ostiomeatal complex (OMC), unlike the laminar flow in normal nasal anatomy. This altered airflow may impact sinus health.

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Area of Science:

  • Biomedical Engineering
  • Medical Imaging
  • Computational Science

Background:

  • The ostiomeatal complex (OMC) is crucial for sinus drainage.
  • Understanding airflow dynamics within the OMC is essential for diagnosing and treating sinonasal diseases.
  • Nasal septal deviation (NSD) can alter sinonasal airflow patterns.

Purpose of the Study:

  • To analyze ostiomeatal complex (OMC) aeration using computational fluid dynamics (CFD) simulations.
  • To compare airflow patterns in patients with normal nasal anatomy versus those with nasal septal deviation (NSD).

Main Methods:

  • Utilized computational fluid dynamics (CFD) simulations based on human craniofacial computed tomography (CT) scans.
  • Employed the Reynolds-Average Simulation approach with a k-ε SST turbulence model.
  • Analyzed CT scans from two patients: one with normal nasal anatomy and one with NSD.

Main Results:

  • Observed distinct differences in airflow velocity through the OMC between normal and NSD patients.
  • Identified turbulent airflow in the OMC of the NSD patient, contrasting with laminar flow in the normal patient.
  • Noted faster airflow in the wider nasal cavity of the NSD patient compared to the narrower side.

Conclusions:

  • CFD simulations effectively demonstrate altered airflow dynamics in the OMC due to NSD.
  • Turbulent airflow and increased velocity in the OMC of NSD patients may influence sinonasal health.
  • Higher airflow speed towards the OMC during exhalation in NSD patients could facilitate mucus penetration into anterior sinuses.