Rationale: The normal range for oxygen saturation is 95-100%. A value below 90%

indicates hypoxemia, which can lead to tissue hypoxia and organ damage. The

patient with COPD may have a lower baseline oxygen saturation, but any drop

below 90% should be reported and treated promptly.

2. A 45-year-old female patient with type 2 diabetes mellitus is scheduled for a

colonoscopy. She asks the nurse how to manage her diabetes medications before

the procedure. What is the best response by the nurse?

a) "You should take your usual dose of oral antidiabetic agents the night before and

skip them on the day of the procedure."*

b) "You should stop taking your oral antidiabetic agents three days before the

procedure and monitor your blood glucose closely."

c) "You should take half of your usual dose of oral antidiabetic agents the night

before and the morning of the procedure."

d) "You should continue taking your oral antidiabetic agents as prescribed until the

day of the procedure and then resume them after the procedure."

Rationale: The patient should take her usual dose of oral antidiabetic agents the

night before and skip them on the day of the procedure to avoid hypoglycemia

during fasting. She should also check her blood glucose before and after the

procedure and resume her medications as instructed by the provider.

3. A 32-year-old male patient with a history of schizophrenia is brought to the

emergency department by his family. He has been non-compliant with his

antipsychotic medication for several weeks and is experiencing auditory

hallucinations, paranoia, and agitation. The nurse administers a dose of haloperidol

intramuscularly as ordered by the provider. What is the most important nursing

action after giving the medication?