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2. Heliox - Wikipedia

   en.wikipedia.org/wiki/Heliox

   Heliox is a breathing gas mixture of helium (He) and oxygen (O 2). It is used as a medical treatment for patients with difficulty breathing because this mixture generates less resistance than atmospheric air when passing through the airways of the lungs, and thus requires less effort by a patient to breathe in and out of the lungs.

3. Medical gas therapy - Wikipedia

   en.wikipedia.org/wiki/Medical_gas_therapy

   Heliox's low density produces a lower Reynolds number and hence higher probability of laminar flow for any given airway. Laminar flow tends to generate less resistance than turbulent flow. In the small airways where flow is laminar, resistance is proportional to gas viscosity and is not related to density and so heliox has little effect

4. Airway resistance - Wikipedia

   en.wikipedia.org/wiki/Airway_resistance

   This shows that larger airways are more prone to turbulent flow than smaller airways. In cases of upper airway obstruction the development of turbulent flow is a very important mechanism of increased airway resistance, this can be treated by administering Heliox , a breathing gas which is much less dense than air and consequently more ...

5. Impulse oscillometry - Wikipedia

   en.wikipedia.org/wiki/Impulse_oscillometry

   Impulse oscillometry (IOS), also known as respiratory oscillometry, forced oscillatory technique (FOT), or just oscillometry, is a non-invasive lung function test that measures the mechanical properties of the respiratory system, particularly the upper and intrathoracic airways, lung tissue and chest wall, usually during the patient's tidal breathing (the way someone breathes when they are ...

6. Stridor - Wikipedia

   en.wikipedia.org/wiki/Stridor

   Use of inhaled Heliox (70% helium, 30% oxygen); the effect is almost instantaneous. Helium, being a less dense gas than nitrogen, reduces turbulent flow through the airways. Always ensure an open airway. In obese patients elevation of the panniculus has shown to relieve symptoms by 80%.

7. Breathing gas - Wikipedia

   en.wikipedia.org/wiki/Breathing_gas

   A breathing gas is a mixture of gaseous chemical elements and compounds used for respiration. Air is the most common and only natural breathing gas. Other mixtures of gases, or pure oxygen, are also used in breathing equipment and enclosed habitats such as scuba equipment, surface supplied diving equipment, recompression chambers, high-altitude mountaineering, high-flying aircraft, submarines ...

8. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

9. Work of breathing - Wikipedia

   en.wikipedia.org/wiki/Work_of_breathing

   The normal relaxed state of the lung and chest is partially empty. Further exhalation requires muscular work. Inhalation is an active process requiring work. [4] Some of this work is to overcome frictional resistance to flow, and part is used to deform elastic tissues, and is stored as potential energy, which is recovered during the passive process of exhalation, Tidal breathing is breathing ...