Pharmacology Exam Questions |
20 NCLEX-RN Next Gen Practice Questions with
Rationales | Nursing Pharmacology Study
Guide
Question 1
Clinical Scenario
A nurse is preparing to administer a newly prescribed medication to a
client. Before giving the medication, the nurse reviews the medication
administration record, confirms the client’s identity, and verifies the
dose and route.
Question Stem
Which principle of medication administration is the nurse applying by
verifying the client’s identity before administering the medication?
• A. Right route
• B. Right dose
• C. Right client
, • D. Right documentation
Correct Answer: C. Right client
Detailed Rationale
Verifying the client’s identity ensures the nurse is administering the
medication to the right client, one of the core rights of medication
administration. This safety step helps prevent medication errors that
could result in harm if the medication is given to the wrong person.
Option A is incorrect because the right route refers to ensuring the
medication is administered by the correct method, such as oral or
intravenous. Option B is incorrect because the right dose refers to
confirming the prescribed amount of medication. Option D is incorrect
because right documentation involves recording the medication
administration accurately after the medication is given.
By confirming the client’s identity using at least two identifiers, such as
name and date of birth, the nurse reduces the risk of medication
administration errors and promotes safe patient care.
Learning Objective
After completing this question, the learner should be able to:
• Identify the rights of medication administration.
• Recognize the importance of verifying client identity before
medication administration.
• Apply medication safety principles in clinical practice.
Medication Safety Focus: Medication administration
Question 2
, Clinical Scenario
A client asks the nurse why a medication prescribed for hypertension
lowers blood pressure.
Question Stem
Which pharmacology concept explains how a medication produces its
therapeutic effect?
• A. Pharmacokinetics
• B. Pharmacodynamics
• C. Bioavailability
• D. Half-life
Correct Answer: B. Pharmacodynamics
Detailed Rationale
Pharmacodynamics describes what the drug does to the body, including
its mechanism of action and therapeutic effects. In this scenario, the
question asks how the medication lowers blood pressure, which refers
to the drug’s effect on body systems.
Option A is incorrect because pharmacokinetics describes what the
body does to the drug, including absorption, distribution, metabolism,
and excretion. Option C is incorrect because bioavailability refers to the
proportion of a drug that reaches systemic circulation. Option D is
incorrect because half-life refers to the time required for the
concentration of a drug in the body to decrease by half.