Free NCLEX RN Practice Test Practice Question
The nurse is caring for a client with pneumonia who is allergic to penicillin. Which antibiotic is safest to administer to this client?
Correct Answer: C
Rationale: C: Erythrocin (Erythromycin) is a macrolide antibiotic that does not share the beta-lactam structure of penicillin, making it a safe choice for clients with penicillin allergies.
A: Cefazolin (Ancef) and D: Ceftriaxone (Rocephin) are both cephalosporins, which can potentially cause cross-reactivity in individuals allergic to penicillin, posing a risk to the client.
B: Amoxicillin is a penicillin derivative and should be avoided entirely in patients with penicillin allergies, as it can trigger an allergic reaction. Thus, Erythromycin is the safest option for this client.
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