HESI RN
HESI RN 311 Pharmacology Questions
Extract:
Question 1 of 5
A client with a history of anaphylactic reaction to penicillin receives a prescription for cephalexin 500 mg PO twice daily. Which action should the nurse take?
Correct Answer: A
Rationale: Contacting the provider (
A) is priority due to a 1-4% cross-reactivity risk between penicillin and cephalexin (a cephalosporin) in penicillin-allergic patients, especially with anaphylaxis history. Antihistamines (
B) cannot prevent anaphylaxis. Administering without consultation (
C) risks severe reaction. Monitoring (
D) is secondary to preventing exposure.
Question 2 of 5
Correct Answer:
Rationale:
Question 3 of 5
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Question 4 of 5
Correct Answer:
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Question 5 of 5
Correct Answer:
Rationale: