Comparison of Several Oxygenation Targets With Different Oxygen Interfaces - Impact on Oxygen Flow Rates

"Oxygen will be administered via nasal cannula up to 6 liters per minute during this period.~Oxygen flow rates will be adjusted manually, with a gradual increase in flow rates to achieve a oxygen flow rates for reach the peripheral oxygen saturation (SpO2) target (92% for non chronic obstructive pulmonary disease (non COPD) patient and 90% for chronic obstructive pulmonary disease (COPD) patient).~The steady state will be defined by a fixed oxygen flow rate and a stable SpO2 around the target ±2% for 15 minutes. The average oxygen flow rate during the last five minutes will be used."

"Oxygen will be administered via nasal cannula up to 15 liters per minute during this period.~Oxygen flow rates will be adjusted manually, with a gradual increase in flow rates to achieve a oxygen flow rates for reach the SpO2 target (92% for non COPD patient and 90% for COPD patient).~The steady state will be defined by a fixed oxygen flow rate and a stable SpO2 around the target ±2% for 15 minutes. The average oxygen flow rate during the last five minutes will be used."

"Oxygen will be administered via an open during this period. Oxygen flow rates will be adjusted manually, with a gradual increase in flow rates to achieve a oxygen flow rates for reach the SpO2 target (92% for non COPD patient and 90% for COPD patient).~The steady state will be defined by a fixed oxygen flow rate and a stable SpO2 around the target ±2% for 15 minutes. The average oxygen flow rate during the last five minutes will be used."

"Oxygen will be administered via simple oxygen face mask during this period. Oxygen flow rates will be adjusted manually, with a gradual increase in flow rates to achieve a oxygen flow rates for reach the SpO2 target (92% for non COPD patient and 90% for COPD patient).~The steady state will be defined by a fixed oxygen flow rate and a stable SpO2 around the target ±2% for 15 minutes. The average oxygen flow rate during the last five minutes will be used."