A nurse is administering oxygen via a non-rebreather face mask. Which of the following would help facilitate ventilation?

Keep the flow rate at 10-12 LPM.
Place the patient in Fowler''s or semi-Fowler''s position.


•An elevated head of the bed promotes lung expansion and can improve ventilation.

•When using a non-rebreather face mask, the flow rate should be 10-12 LPM to ensure that the reservoir bag is filled with oxygen and not with carbon dioxide exhaled by the patient.

•Mask straps need to be snug enough to hold on. Skin breakdown should be avoided, and interventions to pad pressure points are appropriate, but these do not improve ventilation.

For reference:

•Nasal cannula: 1-6 LPM. At 4 LPM, approx 32% O2 is provided.

•Simple face mask: 6-10 LPM at 40-60% O2, but must be over 5 LPM to flush expired CO2 from mask.

•Venturi "Venti" mask: 4-8 LPM at 24-40% O2 at low flow or 10-12 LPM at 50% O2 at high flow.

•Nonrebreathing mask (NRB): 6-12 LPM. Provides 95% O2 with flow rate of 10-12 LPM.

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