The influence of nasal flow aerodynamics on the nasal physiology
Journal Title: Otolaryngologia Polska - Year 2008, Vol 62, Issue 3
Abstract
The ability of the human nose to warm and humidify the respiratory air is important to maintaining the internal environment of the lungs, since ambient air is conditioned to nearly alveolar conditions (body temperature and fully saturated with water vapour) upon reaching the nasopharynx. Because of very short time of the inspiratory phase duration, as well as expiratory phase, only the rich vascularization of the nasal mucosa and specific organization of the submucosal vessels are not able to assure such effective physiological activity. Therefore the type of airflow during the respiration is essential to understanding the functional possibilities of the nasal mucosa. Most studies have investigated the airflow only in steady-flow conditions, where the laminar flow was observed. Anatomically accurate physical models of real nasal cavities and particle image velocimetry allow evaluation of the entire flow field in the nasal cavity. In these investigations a partially turbulent flow was observed even at low air velocities in most part of the nasal cavity. From a physiological perspective, a turbulent flow would seem sensible, since it enhances contact between air and the mucosal layer. By doing so, the nasal physiological functions – humidifi cation, cleaning and warming are optimized.
Authors and Affiliations
Stanisław Betlejewski, Andrzej Betlejewski
Keywords
Related Articles
- EP ID EP51501
- DOI -
- Views 119
- Downloads 0
Castleman disease – a case report
The Castleman disease was described for the first time in 1956 by Castleman. It is a rare disease of the lymphatic tissue, manifesting in excessive proliferation of lymphocites B and plasmatic cells in lymph nodes. The e...
Sprawozdanie z zebrania naukowo-szkoleniowego oddziału Śląsko-Opolskiego Polskiego Towarzystwa Laryngologicznego
Ocena korelacji średniego ciśnienia tętniczego z krwawieniem śródoperacyjnym przy wolnej czynności serca w trakcie endoskopowej chirurgii zatok przynosowych
Induced controlled hypotension is a standard method aimed at decreasing intraoperative bleeding and achieving good operative field conditions. Low hemodynamic parameters during the operation are related to increased risk...
Leki przeciwhistaminowe w leczeniu alergicznego nieżytu nosa – uaktualnienie 2008/2009
The following paper reviews the latest news on antihistamines used in the treatment of allergic rhinitis. It describes the new results of investigations on clinical application of H3 and H4 receptors in therapy of allerg...
Korelacja między stopniem pneumatyzacji komórek grobli nosa a wymiarem przednio-tylnym zachyłka czołowego – wspomagane komputerowo badanie anatomiczne
Cele: Zbadanie korelacji między objętością komórki grobli nosa (agger nasi; AN) a wymiarem przednio-tylnym (anterior-posterior; AP) zachyłka czołowego (frontal recess; FR). Materiał i metody: Do badania włączono 120 pacj...