Background Venturi masks are commonly used in the hospital setting to deliver controlled percentages of oxygen. This is important for those at risk of hypercapnic respiratory failure and to accurately ...

There is no need to do any special preparation for this test. However, if you are on oxygen therapy, oxygen values must be constant for 20 minutes before the test. If you are taking medication to make ...

7 Royal Surrey County Hospital NHS Foundation Trust and Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK ...

School of Chemistry, The University of Sydney, Sydney, NSW2006, Australia School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW2006, Australia ...