dorsal/arxiv
View SchemaReproduction of hypopnea phenomenon using a physical and numerical model
| Authors | Franz Chouly, Annemie Van Hirtum, Pierre-Yves Lagrée, Xavier Pelorson, Yohan Payan |
|---|---|
| Categories | |
| ArXiv ID | physics/0610188 |
| URL | https://arxiv.org/abs/physics/0610188 |
| Journal | Proceedings of the 6th International Symposium on Computer Methods in Biomechanics & Biomedical Engineering FIRST Numerics Ltd, ISBN 0-9549670-0-3 (Ed.) (2004) 1-6 |
Abstract
Obstructive sleep apnea syndrome is now considered as a major health care topic. An in-vitro setup which reproduces and simplifies upper airway geometry has been the basis to study the fluid/walls interaction that leads to an apnea. It consists of a rigid pipe (the pharynx) in contact with a deformable latex cylinder filled with water (the tongue). Air flows out of the rigid pipe and induces pressure forces on the cylinder. We present a numerical model of this setup: a finite element model of the latex cylinder is in interaction with a fluid model. Simulation of an hypopnea (partial collapsus of the airway) has been possible and in agreement with observations from the in-vitro setup. The same phenomenon has been simulated on a soft palate model obtained from a patient sagittal radiography. These first results encourage us to improve the model so as it could reproduce the complete apnea phenomenon, and be used for a planification purpose in sleep apnea surgery.
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"abstract": "Obstructive sleep apnea syndrome is now considered as a major health care\ntopic. An in-vitro setup which reproduces and simplifies upper airway geometry\nhas been the basis to study the fluid/walls interaction that leads to an apnea.\nIt consists of a rigid pipe (the pharynx) in contact with a deformable latex\ncylinder filled with water (the tongue). Air flows out of the rigid pipe and\ninduces pressure forces on the cylinder. We present a numerical model of this\nsetup: a finite element model of the latex cylinder is in interaction with a\nfluid model. Simulation of an hypopnea (partial collapsus of the airway) has\nbeen possible and in agreement with observations from the in-vitro setup. The\nsame phenomenon has been simulated on a soft palate model obtained from a\npatient sagittal radiography. These first results encourage us to improve the\nmodel so as it could reproduce the complete apnea phenomenon, and be used for a\nplanification purpose in sleep apnea surgery.",
"arxiv_id": "physics/0610188",
"authors": [
"Franz Chouly",
"Annemie Van Hirtum",
"Pierre-Yves Lagr\u00e9e",
"Xavier Pelorson",
"Yohan Payan"
],
"categories": [
"physics.med-ph"
],
"journal_ref": "Proceedings of the 6th International Symposium on Computer Methods\n in Biomechanics \u0026 Biomedical Engineering FIRST Numerics Ltd, ISBN\n 0-9549670-0-3 (Ed.) (2004) 1-6",
"title": "Reproduction of hypopnea phenomenon using a physical and numerical model",
"url": "https://arxiv.org/abs/physics/0610188"
},
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