The 24-year-old patient presents with flu-like symptoms and a diffuse maculopapular rash across her chest, trunk, and palms of the hands. Upon palpation, cervical lymph nodes are enlarged. The patient uses intravenous drugs and reports having unprotected sex. The patient’s labs are notable for negative HIV test, positive human chorionic gonadotropin test, and positive rapid plasma reagin test. The patient reports a history of anaphylaxis with penicillin administration. The nurse educates the patient about which treatment? 

The patient receiving chemotherapy for breast cancer develops a fever of 39.8°F and heart rate of 121 bpm. Within hours, the blood pressure drops from 128/89 mmHg to 91/54 mmHg, capillary refill time increases to 5 seconds, and urine output drops to less than 0.5 mL/kg/hour. Right-sided weakness, slurring of the words, and confusion occurs rapidly and subsides within 2 hours. Hemoptysis is also noted and the gums are oozing. Multiple transfusions are ordered. Which blood product does the nurse administer first?

The physician writes an order for diphenhydramine 250 mg PRN for sleep. Which part of the order does the nurse question?