Fentanyl must be used with caution in which patient?

The patient is receiving parenteral nutrition while NPO for a bowel obstruction. Review the patient’s lab results and decide which change to the parenteral nutrition the nurse clarifies with the provider.   Blood urea nitrogen = 34 mg/dL   Serum Creatinine = 2.1 mg/dL  Potassium = 6.1 mEq/dL  Sodium = 131 mEq/dL  Chloride = 100 mEq/dL  Bicarbonate = 18 mEq/dL

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?