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NURS 617 / NURS617 Exam 1 2026/2027
Southeastern Louisiana Pharmacotherapeutics
Actual Questions with Verified Answers and
Detailed Rationales Grade A Study Guide
Question 1
A nursing student asks the instructor to define pharmacodynamics. Which response by
the instructor is most accurate?
A. "It is the process by which the body absorbs, distributes, metabolizes, and excretes a
drug."
B. "It is the influence of genetic factors on a patient's response to medication."
C. "It is the process by which a medication produces its effects on the body."
D. "It is the study of unwanted or harmful drug effects."
CORRECT ANSWER: C
Rationale: Pharmacodynamics describes the biochemical and physiologic effects of
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drugs and their mechanisms of action—what the drug does to the body. Option A
describes pharmacokinetics. Option B describes pharmacogenomics. Option D describes
aspects of adverse effects.
Question 2
When reviewing a medication's profile, the nurse notes it has a low therapeutic index.
What is the most important implication of this for nursing practice?
A. The drug is likely to cause allergic reactions.
B. The drug requires careful dosage titration and close monitoring for toxicity.
C. The drug will have significant interactions with food.
D. The drug's effects are primarily psychological.
CORRECT ANSWER: B
Rationale: A low therapeutic index indicates a narrow margin of safety between a
therapeutic dose and a toxic dose. This necessitates careful dosing and vigilant
monitoring for signs of adverse effects or toxicity to ensure patient safety.
Question 3
A patient develops a rash and shortness of breath shortly after receiving a new
intravenous antibiotic. The nurse recognizes this as which type of reaction?
A. Idiosyncratic reaction
B. Side effect
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C. Type A adverse reaction
D. Type B adverse reaction
CORRECT ANSWER: D
Rationale: This is a Type B reaction—idiosyncratic, unpredictable, and not dose-
dependent. It is an unexpected immunologic hypersensitivity reaction. A Type A reaction
(C) is predictable and dose-dependent. An idiosyncratic reaction (A) is a subset of Type B
but is specifically an unusual, unexpected effect. A side effect (B) is a predictable,
secondary effect.
Question 4
A patient with chronic pain requires increasing doses of an opioid to achieve the same
level of pain relief. The nurse documents this as which phenomenon?
A. Physical dependence
B. Psychological dependence
C. Tachyphylaxis
D. Drug tolerance
CORRECT ANSWER: D
Rationale: Drug tolerance is defined by the need for progressively larger doses to
achieve the same effect. Physical dependence (A) is characterized by withdrawal
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symptoms upon discontinuation. Psychological dependence (B) is a perceived need for
the drug. Tachyphylaxis (C) is a rapid decrease in response to a drug.
Question 5
A patient on antihypertensive therapy experiences severe orthostatic hypotension and
fainting. This is an example of:
A. A side effect
B. An adverse effect
C. A teratogenic effect
D. A carcinogenic effect
CORRECT ANSWER: B
Rationale: This is an adverse effect—a noxious, unintended, and undesirable effect
occurring at normal therapeutic doses. A side effect (A) is generally milder and more
predictable. Teratogenic (C) and carcinogenic (D) effects refer to drug-induced birth
defects or cancer, respectively.
Question 6
A patient taking warfarin is prescribed sulfamethoxazole-trimethoprim for a urinary
tract infection. The nurse is concerned about a potential harmful drug interaction.
Which type of interaction is most likely?
A. Beneficial potentiative
NURS 617 / NURS617 Exam 1 2026/2027
Southeastern Louisiana Pharmacotherapeutics
Actual Questions with Verified Answers and
Detailed Rationales Grade A Study Guide
Question 1
A nursing student asks the instructor to define pharmacodynamics. Which response by
the instructor is most accurate?
A. "It is the process by which the body absorbs, distributes, metabolizes, and excretes a
drug."
B. "It is the influence of genetic factors on a patient's response to medication."
C. "It is the process by which a medication produces its effects on the body."
D. "It is the study of unwanted or harmful drug effects."
CORRECT ANSWER: C
Rationale: Pharmacodynamics describes the biochemical and physiologic effects of
,2|Page
drugs and their mechanisms of action—what the drug does to the body. Option A
describes pharmacokinetics. Option B describes pharmacogenomics. Option D describes
aspects of adverse effects.
Question 2
When reviewing a medication's profile, the nurse notes it has a low therapeutic index.
What is the most important implication of this for nursing practice?
A. The drug is likely to cause allergic reactions.
B. The drug requires careful dosage titration and close monitoring for toxicity.
C. The drug will have significant interactions with food.
D. The drug's effects are primarily psychological.
CORRECT ANSWER: B
Rationale: A low therapeutic index indicates a narrow margin of safety between a
therapeutic dose and a toxic dose. This necessitates careful dosing and vigilant
monitoring for signs of adverse effects or toxicity to ensure patient safety.
Question 3
A patient develops a rash and shortness of breath shortly after receiving a new
intravenous antibiotic. The nurse recognizes this as which type of reaction?
A. Idiosyncratic reaction
B. Side effect
,3|Page
C. Type A adverse reaction
D. Type B adverse reaction
CORRECT ANSWER: D
Rationale: This is a Type B reaction—idiosyncratic, unpredictable, and not dose-
dependent. It is an unexpected immunologic hypersensitivity reaction. A Type A reaction
(C) is predictable and dose-dependent. An idiosyncratic reaction (A) is a subset of Type B
but is specifically an unusual, unexpected effect. A side effect (B) is a predictable,
secondary effect.
Question 4
A patient with chronic pain requires increasing doses of an opioid to achieve the same
level of pain relief. The nurse documents this as which phenomenon?
A. Physical dependence
B. Psychological dependence
C. Tachyphylaxis
D. Drug tolerance
CORRECT ANSWER: D
Rationale: Drug tolerance is defined by the need for progressively larger doses to
achieve the same effect. Physical dependence (A) is characterized by withdrawal
, 4|Page
symptoms upon discontinuation. Psychological dependence (B) is a perceived need for
the drug. Tachyphylaxis (C) is a rapid decrease in response to a drug.
Question 5
A patient on antihypertensive therapy experiences severe orthostatic hypotension and
fainting. This is an example of:
A. A side effect
B. An adverse effect
C. A teratogenic effect
D. A carcinogenic effect
CORRECT ANSWER: B
Rationale: This is an adverse effect—a noxious, unintended, and undesirable effect
occurring at normal therapeutic doses. A side effect (A) is generally milder and more
predictable. Teratogenic (C) and carcinogenic (D) effects refer to drug-induced birth
defects or cancer, respectively.
Question 6
A patient taking warfarin is prescribed sulfamethoxazole-trimethoprim for a urinary
tract infection. The nurse is concerned about a potential harmful drug interaction.
Which type of interaction is most likely?
A. Beneficial potentiative
