The nurse is caring for an elderly who has chronic emphysema and is receiving oxygen at 2 L/min. The nurse enters the room to find that his wife has turned the oxygen up to 10 L/min because her husband is having increasing difficulty breathing. What is the BEST immediate action for the nurse to take?
a. Tell the wife that 10 L/min is too high and turn it back to 5 L/min.
b. Explain to the wife that his oxygen was ordered at 2 L/min and it should stay there until the physician orders something else.
c. Assure her that 10 L/min will ease her husband's breathing.
d. Turn the oxygen setting back to 2 L/min.
