The Oxymizer pendant® is a special oxygen cannula that can be used to supply high flow long term oxygen therapy. It is compatible with a wide variety of oxygen sources. In a reservoir, the Oxymizer® stores pure oxygen so that the concentration of inhaled oxygen is increased. The aim of this study is to investigate the potential benefit of the Oxymizer® with regard to the blood oxygenation during exercise testing. Given that the "endurance time" is very sensitive for little changes in exercise capacity, this test will be used to show the difference between the Oxymizer® and a conventional nasal cannula regarding exercise duration at 70% of peak Watt and oxygenation. The tests will be accompanied by blood gas analysis, partial pressure of carbon dioxide and heart rate.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
67
Using first the Oxymizer and 24 h later the conventional nasal cannula.
Using first the conventional nasal cannula and 24h later the Oxymizer
Klinikum Berchtesgadener Land
Berchtesgaden, Bavaria, Germany
Difference between Endurance time with Oxymizer and conventional nasal cannula
Time frame: From starting until stopping cycling, up to 60 minutes
Difference in oxygen saturation with Oxymizer and with conventional nasal cannula
Time frame: stopping cycling, up to 60 minutes
Difference in PaCO2 with Oxymizer and with conventional nasal cannula
measured by Sentec device
Time frame: Stopping cycling, up to 60 minutes
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