The nurse is caring for a senior adult client with three diagnoses of Parkinson's disease and an exacerbation of COPD. The nurse observes the unlicensed assistant personnel (UAP) providing morning care and obtaining vital signs by using a portable electronic blood pressure cuff and clip-on pulse oximetry sensor.

Nurse's Notes: Vital Sign # 0715: Client sitting up in bed with oxygen 2.1 per nasal cannula (NC) on. Clear pink skin and warm and dry lungs with scattered wheezes throughout. The client complains of shortness of breath and states, "I feel so much better than I did a couple of days ago." Mild tremors were noted. The client states, "My hands shake all the time."

1140: Client is still in bed with oxygen 2.1 per NC on, scattered wheezes throughout, and coarse rhonchi, which are clear with coughing. Cough is productive of yellow phlegm. Skin cool and dry. The client complains of shortness of breath or discomfort and states, "I like to keep it chilly in my room to help me breathe."

1140: The UAP reports to the nurse that the client's SpO2 is decreased.

Q1. After assessing the patient and reviewing the vital signs, which nursing action is appropriate to address the decreased SpO2?

(Select all that apply.)