A nurse is caring for a patient with pneumonia who has been on oxygen therapy for several days.
Which of the following symptoms should the nurse recognize as a potential adverse effect of oxygen therapy?

Choice A rationale

While involving the family in the care of an older adult client is important, calling the family to make arrangements for someone to sit with the client is not the immediate action the nurse should take. The nurse’s first responsibility is to ensure the client’s safety and well-being.
Choice B rationale
Obtaining a prescription for medication to sedate the client is not the immediate action the nurse should take. Sedating the client does not address the immediate concern of potential injury.
Choice C rationale
The nurse should first check the client for injuries. This is the immediate action because the client may have sustained injuries from the fall. The nurse should perform a thorough assessment to determine the extent of any injuries and provide appropriate care.
Choice D rationale
Assisting the client back into bed and applying restraints is not the immediate action the nurse should take. Restraints should be used as a last resort and only if less restrictive measures have been ineffective. Furthermore, restraints require a physician’s order.

Choice A rationale
Applying the pulse oximeter probe to the toe might not provide an accurate reading if the client has poor peripheral circulation. Additionally, thickened toenails can interfere with the reading.
Choice B rationale

Edema in the hands can affect the accuracy of a pulse oximeter reading. The probe might not fit properly or provide a reliable reading if the finger is swollen.
Choice C rationale
Applying the pulse oximeter probe to a skin fold is not recommended. The probe needs to be placed on a relatively flat, thin area of skin to accurately measure oxygen saturation.
Choice D rationale
The earlobe is a suitable alternative site for pulse oximetry if the fingers and toes are not viable options. The earlobe is typically less affected by peripheral vasoconstriction, which can occur with hypothermia, certain medications, and certain diseases. Therefore, Choice D is the correct answer.