Difficulty: Medium
Average Score: 83%
Simulated
A nurse is reviewing the medical history of a client prior to medication administration and notes a history of an anaphylactic reaction to penicillin. The nurse should identify that which of the following medications is contraindicated for this client?
Correct answer
D
Rationale
The correct answer is D: Ceftriaxone. Penicillin and ceftriaxone belong to the same antibiotic class (beta-lactams), which can cross-react in clients allergic to penicillin. This client's history of an anaphylactic reaction to penicillin indicates a high risk of an allergic reaction to ceftriaxone. Metronidazole (A), clarithromycin (B), and vancomycin (C) are not contraindicated in clients with a penicillin allergy as they do not share a similar chemical structure or mechanism of action.