Which step is not required if the oxygen flow is under 3 L/min?

Which step is not required if the oxygen flow is under 3 L/min?

• A. Post no smoking sign
• B. Wash hands
• C. If humidifier, fill with sterile water
• D. Assemble equipment

Answer: (C)

Low-flow oxygen delivery often doesn’t require humidification. When the patient is on a flow rate under 3 L/min, the oxygen can be administered without a humidifier, so filling the humidifier with sterile water isn’t needed. Humidification is typically used at higher flow rates to prevent drying of the airways, so this step is specific to whether a humidifier is being used and at what flow. The other steps are still important for safety and readiness: a no-smoking sign is essential around oxygen because oxygen supports combustion; washing hands helps prevent infection; and assembling the equipment ensures everything is properly connected and functioning before use.

Low-flow oxygen delivery often doesn’t require humidification. When the patient is on a flow rate under 3 L/min, the oxygen can be administered without a humidifier, so filling the humidifier with sterile water isn’t needed. Humidification is typically used at higher flow rates to prevent drying of the airways, so this step is specific to whether a humidifier is being used and at what flow. The other steps are still important for safety and readiness: a no-smoking sign is essential around oxygen because oxygen supports combustion; washing hands helps prevent infection; and assembling the equipment ensures everything is properly connected and functioning before use.