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Simulation of the Retroglossal Fluid-Structure Interaction During Obstructive Sleep Apnea

  • Franz Chouly
  • Annemie Van Hirtum
  • Pierre-Yves Lagrée
  • Jean-Roch Paoli
  • Xavier Pelorson
  • Yohan Payan
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4072)

Abstract

A method for computing the interaction between the airflow and the soft tissue during an Obstructive Apnea is presented. It is based on simplifications of the full continuum formulation (Navier-Stokes and finite elasticity) to ensure computation time compatible with clinical applications. Linear elasticity combined with a precomputation method allows fast prediction of the tissue deformation, while an asymptotic formulation of the full Navier-Stokes equations (Reduced Navier-Stokes/Prandtl equations) has been chosen for the flow. The accuracy of the method has already been assessed experimentally. Then, simulations of the complete collapsus at the retroglossal level in the upper airway have been carried out, on geometries extracted from pre-operative radiographies of two apneic patients. Post-operative geometries have been also used to check qualitatively if the predictions from the simulations are in agreement with the effects of the surgery.

Keywords

Obstructive Sleep Apnea Obstructive Sleep Apnea Syndrome Obstructive Sleep Apnoea Complete Closure Posterior Pharyngeal Wall 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Franz Chouly
    • 1
    • 2
  • Annemie Van Hirtum
    • 2
  • Pierre-Yves Lagrée
    • 3
  • Jean-Roch Paoli
    • 4
  • Xavier Pelorson
    • 2
  • Yohan Payan
    • 1
  1. 1.Laboratoire TIMC, UMR CNRS 5525Université Joseph FourierLa TroncheFrance
  2. 2.Institut de la Communication ParléeINPG, UMR CNRS Q5009GrenobleFrance
  3. 3.Laboratoire de Modélisation en MécaniqueUMR CNRS 7607ParisFrance
  4. 4.TSA 40031Centre Hospitalier Universitaire PurpanToulouseFrance

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