Before and after using the oxygen mask, wash your hands with soap and water or use hand sanitizer. The flow of oxygen should not be less than 5 liters per minute, because it causes the return of exhaled air that has a large amount of carbon dioxide. It should be ensured that the mask is properly adjusted on the patient’s face so that outside air does not enter the mask. Proper and stable supply of oxygen to the mask should be ensured, so that the oxygen concentration requested by the doctor is met. Connect the nasal tube (cannula) properly to the oxygen tank and make sure that the tube is not bent or blocked.

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