Lehne's Pharmacology for Nursing
Care
12th Edition
• Author(s)Jacqueline Rosenjack
Burchum; Laura D. Rosenthal
,TEST BANK
Question 1 (MCQ)
Clinical Scenario
A nurse is teaching a newly hired graduate nurse about basic
pharmacology terminology. During the discussion, the graduate
nurse asks about the meaning of potency.
Question Stem
Which statement best describes drug potency?
Answer Options
A. The maximum effect a drug can produce
B. The amount of drug needed to produce a specific effect
C. The rate at which a drug is eliminated
D. The ability of a drug to bind plasma proteins
Correct Answer
B. The amount of drug needed to produce a specific effect
Detailed Rationale
,Potency refers to the dosage required to achieve a given
therapeutic response. A highly potent drug produces the
desired effect at a lower dose than a less potent drug. Potency
does not indicate that a drug is more effective; it simply means
less drug is needed.
Incorrect Option Analysis
A. Maximum effect a drug can produce
• Incorrect because this describes efficacy.
• Misconception: Potent drugs are always more effective.
• Safety Risk: Selecting inappropriate doses.
• Nursing Consideration: Distinguish efficacy from potency.
C. Rate of elimination
• Incorrect because this relates to pharmacokinetics.
• Misconception: Potency depends on clearance.
• Safety Risk: Dosing errors.
• Nursing Consideration: Monitor elimination separately.
D. Ability to bind plasma proteins
• Incorrect because protein binding affects distribution.
• Misconception: Binding determines potency.
, • Safety Risk: Failure to recognize drug interactions.
• Nursing Consideration: Monitor highly protein-bound
drugs.
Nursing Process Linkage
Assessment
NCJMM Competencies
• Recognize Cues
• Analyze Cues
Difficulty
Easy
Bloom's Level
Understand
NCLEX Client Needs
Pharmacological and Parenteral Therapies
Key Learning Objective
Differentiate potency from efficacy.
Question 2 (MCQ)
Care
12th Edition
• Author(s)Jacqueline Rosenjack
Burchum; Laura D. Rosenthal
,TEST BANK
Question 1 (MCQ)
Clinical Scenario
A nurse is teaching a newly hired graduate nurse about basic
pharmacology terminology. During the discussion, the graduate
nurse asks about the meaning of potency.
Question Stem
Which statement best describes drug potency?
Answer Options
A. The maximum effect a drug can produce
B. The amount of drug needed to produce a specific effect
C. The rate at which a drug is eliminated
D. The ability of a drug to bind plasma proteins
Correct Answer
B. The amount of drug needed to produce a specific effect
Detailed Rationale
,Potency refers to the dosage required to achieve a given
therapeutic response. A highly potent drug produces the
desired effect at a lower dose than a less potent drug. Potency
does not indicate that a drug is more effective; it simply means
less drug is needed.
Incorrect Option Analysis
A. Maximum effect a drug can produce
• Incorrect because this describes efficacy.
• Misconception: Potent drugs are always more effective.
• Safety Risk: Selecting inappropriate doses.
• Nursing Consideration: Distinguish efficacy from potency.
C. Rate of elimination
• Incorrect because this relates to pharmacokinetics.
• Misconception: Potency depends on clearance.
• Safety Risk: Dosing errors.
• Nursing Consideration: Monitor elimination separately.
D. Ability to bind plasma proteins
• Incorrect because protein binding affects distribution.
• Misconception: Binding determines potency.
, • Safety Risk: Failure to recognize drug interactions.
• Nursing Consideration: Monitor highly protein-bound
drugs.
Nursing Process Linkage
Assessment
NCJMM Competencies
• Recognize Cues
• Analyze Cues
Difficulty
Easy
Bloom's Level
Understand
NCLEX Client Needs
Pharmacological and Parenteral Therapies
Key Learning Objective
Differentiate potency from efficacy.
Question 2 (MCQ)
