The 72-year-old client is admitted to the medical unit diagnosed with an acute exacerbation of diverticulosis. The health-care provider has prescribed the intravenous antibiotic ceftriaxone...

The 72-year-old client is admitted to the medical unit diagnosed with an acute exacerbation of diverticulosis. The health-care provider has prescribed the intravenous antibiotic ceftriaxone (Rocephin). Which intervention should the nurse implement first?

1. Monitor the client’s white blood cell count.

2. Assess the client’s most recent vital signs.

3. Determine if the client has any known allergies.

4. Send a stool specimen to the laboratory.