NU 578 Unit 1 Exam (2026/2027) | Advanced Practice Nurses
| University of South Alabama - PDF
Section 1: Foundational Pharmacology Principles (Questions 1-40)
1. A nurse is preparing to give an oral dose of drug X to treat a patient's high
blood pressure. After giving the drug, the nurse finds that it not only reduces
the blood pressure without serious harmful effects, but it also causes the
patient to have nausea and headache. Based on this information, which
property of an ideal drug is this drug lacking?
A. Effectiveness
B. Safety
C. Selectivity
D. Ease of administration
Answer: C. Selectivity
Rationale: Selectivity is the ability of a drug to elicit only the response
for which it is given. While this drug is effective and safe, it causes
additional unwanted effects (nausea and headache), indicating a lack
of selectivity. Most drugs are non-selective to some degree .
2. The nurse is preparing to give a drug with certain properties. Which
property of the drug is the most compelling indication that it should not be
given?
A. The drug produces an unwanted side effect.
B. The drug is difficult to administer.
C. The drug's effects are reversible.
D. The drug is not effective for its intended purpose.
Answer: D. The drug is not effective for its intended purpose.
Rationale: If a drug is not effective, there is no justification for
administering it. A drug may still be given if it produces side effects or
is difficult to administer, as long as it provides therapeutic benefit.
Reversible action is a desired property .
,3. Why is it important for drugs to have ease of administration?
A. Fewer administration errors
B. Less risk of side effects
C. Greater chemical stability
D. Greater likelihood of reversibility
Answer: A. Fewer administration errors
Rationale: Ease of administration increases convenience and patient
adherence and can significantly reduce administration errors. It does
not directly relate to side effects, chemical stability, or reversibility .
4. The nurse teaches a patient not to consume alcohol with nitroglycerine,
because the blood pressure often drops significantly when nitroglycerine is
taken with alcohol. Which drug property does this illustrate?
A. Chemical instability
B. Drug interaction
C. Reversible action
D. Drug selectivity
Answer: B. Drug interaction
Rationale: A drug interaction occurs when two or more drugs are
taken together, causing either increased or decreased drug responses.
In this case, alcohol increases the vasodilating effect of nitroglycerine,
leading to an exaggerated hypotensive response .
5. When studying the impact a drug has on the body, the nurse is reviewing
what?
A. The drug's pharmacokinetics
B. The drug's selectivity
C. The drug's pharmacodynamics
D. The drug's predictability
Answer: C. The drug's pharmacodynamics
Rationale: Pharmacodynamics is the study of the biochemical and
physiologic effects of drugs on the body (what the drug does to the
,body). Pharmacokinetics describes the movement of drugs through
the body (what the body does to the drug) .
6. When studying the effects of drugs in humans, the nurse is learning about
what?
A. Pharmacology
B. Clinical pharmacology
C. Therapeutics
D. Effectiveness
Answer: B. Clinical pharmacology
Rationale: Clinical pharmacology is the study of the effects of drugs in
humans. Pharmacology is the broader study of drugs and their
interactions with living systems. Therapeutics
(pharmacotherapeutics) is the use of drugs to diagnose, prevent, or
treat disease .
7. What is the objective of drug therapy?
A. To provide maximum benefit with minimal harm
B. To provide minimum benefit with maximum harm
C. To provide total relief of symptoms regardless of harm
D. To provide as much benefit as possible
Answer: A. To provide maximum benefit with minimal harm
Rationale: The objective of drug therapy is to achieve maximum
therapeutic benefit while minimizing harm. Because no drug is ideal,
clinicians must balance efficacy with safety .
8. Which statement indicates that further study is needed regarding drug
definitions?
A. Effectiveness is the most important property a drug can have.
B. There is no such thing as a safe drug.
C. Drugs are defined as illegal substances.
D. There is no such thing as a selective drug; all medications cause side
effects.
, Answer: C. Drugs are defined as illegal substances.
Rationale: A drug is defined as any chemical that can affect living
processes, not just illegal substances. The other statements reflect
accurate understanding of drug properties .
9. What is the ultimate concern for the nurse when administering a drug?
A. Intensity of the response
B. Dosage
C. Route of administration
D. Timing of administration
Answer: A. Intensity of the response
Rationale: The ultimate concern is the intensity of the response,
which is determined by the interaction of pharmacokinetics,
pharmacodynamics, and individual patient factors. Dosage, route, and
timing all contribute to this outcome .
10. A patient asks the nurse, "Why do I have to take this pill three times a
day?" Which response best describes the concept of drug half-life?
A. The time it takes for the drug to be absorbed into the bloodstream
B. The time it takes for the drug to reach its peak effectiveness
C. The time it takes for the drug concentration in the body to decrease by
50%
D. The time it takes for the drug to be excreted entirely from the body
Answer: C. The time it takes for the drug concentration in the body to
decrease by 50%
Rationale: Drug half-life is the time required for the amount of drug in
the body to decrease by 50%. It determines dosing frequency and time
to steady state .
11. Which patient population is most vulnerable to adverse drug effects due
to immature drug-metabolizing enzymes?
A. Newborns
B. Adolescents
| University of South Alabama - PDF
Section 1: Foundational Pharmacology Principles (Questions 1-40)
1. A nurse is preparing to give an oral dose of drug X to treat a patient's high
blood pressure. After giving the drug, the nurse finds that it not only reduces
the blood pressure without serious harmful effects, but it also causes the
patient to have nausea and headache. Based on this information, which
property of an ideal drug is this drug lacking?
A. Effectiveness
B. Safety
C. Selectivity
D. Ease of administration
Answer: C. Selectivity
Rationale: Selectivity is the ability of a drug to elicit only the response
for which it is given. While this drug is effective and safe, it causes
additional unwanted effects (nausea and headache), indicating a lack
of selectivity. Most drugs are non-selective to some degree .
2. The nurse is preparing to give a drug with certain properties. Which
property of the drug is the most compelling indication that it should not be
given?
A. The drug produces an unwanted side effect.
B. The drug is difficult to administer.
C. The drug's effects are reversible.
D. The drug is not effective for its intended purpose.
Answer: D. The drug is not effective for its intended purpose.
Rationale: If a drug is not effective, there is no justification for
administering it. A drug may still be given if it produces side effects or
is difficult to administer, as long as it provides therapeutic benefit.
Reversible action is a desired property .
,3. Why is it important for drugs to have ease of administration?
A. Fewer administration errors
B. Less risk of side effects
C. Greater chemical stability
D. Greater likelihood of reversibility
Answer: A. Fewer administration errors
Rationale: Ease of administration increases convenience and patient
adherence and can significantly reduce administration errors. It does
not directly relate to side effects, chemical stability, or reversibility .
4. The nurse teaches a patient not to consume alcohol with nitroglycerine,
because the blood pressure often drops significantly when nitroglycerine is
taken with alcohol. Which drug property does this illustrate?
A. Chemical instability
B. Drug interaction
C. Reversible action
D. Drug selectivity
Answer: B. Drug interaction
Rationale: A drug interaction occurs when two or more drugs are
taken together, causing either increased or decreased drug responses.
In this case, alcohol increases the vasodilating effect of nitroglycerine,
leading to an exaggerated hypotensive response .
5. When studying the impact a drug has on the body, the nurse is reviewing
what?
A. The drug's pharmacokinetics
B. The drug's selectivity
C. The drug's pharmacodynamics
D. The drug's predictability
Answer: C. The drug's pharmacodynamics
Rationale: Pharmacodynamics is the study of the biochemical and
physiologic effects of drugs on the body (what the drug does to the
,body). Pharmacokinetics describes the movement of drugs through
the body (what the body does to the drug) .
6. When studying the effects of drugs in humans, the nurse is learning about
what?
A. Pharmacology
B. Clinical pharmacology
C. Therapeutics
D. Effectiveness
Answer: B. Clinical pharmacology
Rationale: Clinical pharmacology is the study of the effects of drugs in
humans. Pharmacology is the broader study of drugs and their
interactions with living systems. Therapeutics
(pharmacotherapeutics) is the use of drugs to diagnose, prevent, or
treat disease .
7. What is the objective of drug therapy?
A. To provide maximum benefit with minimal harm
B. To provide minimum benefit with maximum harm
C. To provide total relief of symptoms regardless of harm
D. To provide as much benefit as possible
Answer: A. To provide maximum benefit with minimal harm
Rationale: The objective of drug therapy is to achieve maximum
therapeutic benefit while minimizing harm. Because no drug is ideal,
clinicians must balance efficacy with safety .
8. Which statement indicates that further study is needed regarding drug
definitions?
A. Effectiveness is the most important property a drug can have.
B. There is no such thing as a safe drug.
C. Drugs are defined as illegal substances.
D. There is no such thing as a selective drug; all medications cause side
effects.
, Answer: C. Drugs are defined as illegal substances.
Rationale: A drug is defined as any chemical that can affect living
processes, not just illegal substances. The other statements reflect
accurate understanding of drug properties .
9. What is the ultimate concern for the nurse when administering a drug?
A. Intensity of the response
B. Dosage
C. Route of administration
D. Timing of administration
Answer: A. Intensity of the response
Rationale: The ultimate concern is the intensity of the response,
which is determined by the interaction of pharmacokinetics,
pharmacodynamics, and individual patient factors. Dosage, route, and
timing all contribute to this outcome .
10. A patient asks the nurse, "Why do I have to take this pill three times a
day?" Which response best describes the concept of drug half-life?
A. The time it takes for the drug to be absorbed into the bloodstream
B. The time it takes for the drug to reach its peak effectiveness
C. The time it takes for the drug concentration in the body to decrease by
50%
D. The time it takes for the drug to be excreted entirely from the body
Answer: C. The time it takes for the drug concentration in the body to
decrease by 50%
Rationale: Drug half-life is the time required for the amount of drug in
the body to decrease by 50%. It determines dosing frequency and time
to steady state .
11. Which patient population is most vulnerable to adverse drug effects due
to immature drug-metabolizing enzymes?
A. Newborns
B. Adolescents
