NDLI: Effects of Augmented Air Pressure on the Nasal Erectile Tissue and Blood Flow During Breathing Therapies

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	David, E. White Ahmed, M. Al-Jumaily Bartley, James Lu, Jun
Copyright Year	2011
Abstract	During breathing therapies, air delivered under augmented pressure normally requires external humidification in order to avoid upper airways dryness and discomfort. Heat and water transfer between the air and nasal mucosa is dynamically regulated through changes in the nasal erectile tissue volume. This investigation uses magnetic resonance imaging (MRI) to investigate the effects of augmented pressure on nasal erectile tissue size and blood inflow. Eight healthy participants undertook head MRI scans during breathing of ambient and pressurized air. Results demonstrate that the congested airway volume increases in response to augmented air pressure at a level consistent with previous observations. The patent airway; however, demonstrates no significant change. Using arterial spin labeling (ASL) techniques, this research has also qualitatively determined that blood inflow to the patent airway inferior turbinate varies in response to pressure. This new finding is attributed to changes in nasal erectile tissue blood inflow occurring during breathing augmented pressure air.
Starting Page	173
Ending Page	174
Page Count	2
File Format	PDF
ISBN	9780791854884
DOI	10.1115/IMECE2011-63132
Volume Number	Volume 2: Biomedical and Biotechnology Engineering; Nanoengineering for Medicine and Biology
Conference Proceedings	ASME 2011 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2011-11-11
Publisher Place	Denver, Colorado, USA
Access Restriction	Subscribed
Subject Keyword	Water Patents Biological tissues Particle spin Pressure Rotation Blood Blood flow Patient treatment Heat Spin (aerodynamics) Magnetic resonance imaging Inflow
Content Type	Text
Resource Type	Article

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