Preoxygenation using HFNC before intubation was feasible and safe compared with BVM in critically ill subjects with acute, mild to moderate hypoxemic respiratory failure. There was no significant difference in the mean lowest SpO2 during intubation between the HFNC and the BVM group. There was also no significant difference in SpO2 between the 2 groups at any of the predefined time points. However, on continuous monitoring, there was a significant decrease in SpO2 during the apnea phase before intubation in the BVM group, which was not seen in the HFNC group. (ClinicalTrials.gov registration NCT01994928.).
In recent years, high-flow oxygen therapy (HFNC) has become established and proven as an oxygenation method for patients with severe respiratory restrictions in most intensive care units. Advantages of this method, which is used especially for patients with hypoxaemia, are the easy application and the compliance by the patient. Devices are used which enable individual oxygen therapy by means of humidification, warming up and gas flow regulation options.
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