A patient with cystic fibrosis is receiving oxygen via a nasal cannula set at 5 L/min become somewhat unresponsive and confused. SpO2 is 99%. The therapist should recommend which of the following as a first action?
A. Lower the oxygen flow rate
B. Increase the oxygen flow
C. Begin mechanical ventilation
D. Switch to a non-rebreathing mask
Ans: A. Cystic fibrosis is a disease associated with chronic obstruction and is therefore considered to be COPD. Patients with COPD should not receive more than 1-2 liters per minute by nasal cannula or more than 28% oxygen by any device. Excessive oxygen delivery can lead to suppression of the ventilatory drive and result in unresponsiveness and confusion. An oxygen saturation of 94% or less should be maintained.
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