About this trial
Oxygen therapy is at the heart of the healthcare system. Oxygen flow rates depend on a number of confounding factors confounding factors (target used, skin pigmentation, pulse oximeter used, etc.) The investigators have recently have recently demonstrated that the combination of these factors (different peripheral oxygen saturation (SpO2) targets and different oximeters) can have a significant impact on oxygen flows rates. The effect on oxygen flow was not simply additive .
The aim of this study is to evaluate the impact of the interface used on oxygen flow rates in different patient populations (main objective). The investigatoers also evaluate the impact of the interface on carbon dioxide (PaCO2), in particular with closed oxygen masks, with which rebreathing is theoretically possible (secondary objective).
secondary objective).
Eligibility criteria
Qualifiers
Adult (> or = 18 years old)
Ongoing on conventional oxygen therapy with peripheral oxygen saturation (SpO2) between 88 and 100% with the usual oximeter
SpO2 < 92% ambient air with the usual oximeter
Disqualifiers
No SpO2 signal with with the usual oximeter
False nails or nail polish
Severe anemia documented on last blood count during current hospitalization (haemoglobin (Hb) < 80g/L)
Oxygen flow > 6 L/min
Trial design
Treatments tested in this trial
- Nasal canula - up to 6 liters per minute
- Nasal canula - up to 15 liters per minute
- Open oxygen mask
- Simple oxygen face mask