Final answer:
The nurse should monitor the client for confusion as it is an essential intervention in the care of a client with pneumonia, which can indicate hypoxia or worsening illness. Titration of oxygen to maintain an appropriate SaO2 level is also important.
Step-by-step explanation:
When a nurse is planning care for a client with pneumonia, several interventions should be considered to optimally manage the client's health. One important intervention is option A: Monitor the client for confusion. This is critical as confusion can be a sign of hypoxia or worsening illness, particularly in older adults. Conversely, using an incentive spirometer is often recommended more frequently than every 8 hours to help keep the lungs clear and prevent atelectasis, making option B less appropriate. Ensuring adequate hydration is important, but instructing the client to drink 1 L of fluids daily may not meet the individual's needs, so option C also may not be adequate. Lastly, option D to titrate the oxygen to maintain an SaO2 level at 92% is generally a good practice, as it ensures the client maintains an adequate level of oxygen in the blood, which can be essential for recovery from pneumonia.