NURSING LICENSURE
NSG 318 EXAM 3 — 2026/2027 Official Exam
A+
Complete Blueprint Coverage
A+ 5 100%
QUESTIONS VERIFIED CORE DOMAINS COVERED RATIONALES INCLUDED
CATEGORIES
1. Pharmacokinetics, Pharmacodynamics, and Safe Administration
2. Autonomic Nervous System Pharmacology
3. Cardiovascular, Renal, and Diuretic Agents
4. Central Nervous System, Analgesics, and Sedatives
5. Antimicrobial, Endocrine, and Respiratory Medications
STUVIAACTUALEXAM
,1. Pharmacokinetics, Pharmacodynamics, and Safe Administration
Q1
A nurse is preparing to administer a medication with a narrow therapeutic index. The patient asks why blood
levels must be checked frequently. Which explanation best describes the clinical importance of a narrow
therapeutic index?
A. The difference between the effective dose and the toxic dose is small, so levels must be monitored to stay within
the safe and effective range.
B. The drug is always safe at any dose, so laboratory monitoring is only for research purposes.
C. Narrow therapeutic index means the drug is excreted unchanged and never requires dose adjustment.
D. The term indicates that the medication has no adverse effects even when levels are elevated.
Correct Answer: A
Rationale:
A narrow therapeutic index means the margin between therapeutic and toxic concentrations is small. Monitoring plasma levels
helps keep the patient within the therapeutic window and avoid toxicity.
Q2
A patient with hepatic cirrhosis is prescribed a drug that undergoes extensive first-pass metabolism. The nurse
anticipates which change in the drug’s behavior compared with a patient who has normal liver function?
A. Complete absence of drug effect because the liver is required for activation.
B. Higher bioavailability and greater systemic exposure after oral administration, often requiring a lower dose.
C. Faster clearance and the need for higher doses to achieve any effect.
D. No change in pharmacokinetics because first-pass metabolism occurs only in the kidney.
Correct Answer: B
Rationale:
Impaired hepatic function reduces first-pass extraction, increasing the fraction of oral drug that reaches systemic circulation.
Dose reduction is frequently required to prevent toxicity.
Q3
A nurse is teaching a student about the difference between agonists and antagonists. The student correctly
identifies which statement as true?
A. Both agonists and antagonists always produce the same maximal response when given at high doses.
B. Antagonists activate receptors more strongly than full agonists.
C. An agonist binds to a receptor and produces a response; an antagonist binds and blocks the response of an
agonist.
D. Agonists can only bind to receptors located on the cell nucleus.
Correct Answer: C
Rationale:
Agonists activate receptors and elicit a pharmacologic effect. Antagonists occupy the receptor without activating it, thereby
preventing agonist binding and response.
, Q4
A patient is receiving a continuous intravenous infusion of a drug that is eliminated primarily by the kidneys. The
patient’s creatinine clearance has declined from 90 mL/min to 25 mL/min. Which action is most appropriate?
A. Increase the infusion rate to compensate for reduced kidney function.
B. Switch the route to intramuscular injection so that renal clearance is no longer relevant.
C. Discontinue all monitoring of serum levels because renal impairment eliminates the need for them.
D. Anticipate a prolonged half-life and request or implement a reduced dose or extended dosing interval according
to protocol.
Correct Answer: D
Rationale:
Reduced renal clearance slows elimination and extends half-life. Dose reduction or longer intervals prevent accumulation and
toxicity; increasing the rate would worsen accumulation.
Q5
A nurse is preparing an oral medication that is known to be highly protein-bound. The patient has a low serum
albumin level. What clinical implication should the nurse consider?
A. A greater free (unbound) fraction of drug may be present, increasing the risk of enhanced effect or toxicity.
B. Protein binding is irrelevant because albumin does not affect drug distribution.
C. Low albumin always decreases drug effect because less drug is carried in the blood.
D. The nurse should double the dose to overcome the low albumin concentration.
Correct Answer: A
Rationale:
Only unbound drug is pharmacologically active. Hypoalbuminemia increases the free fraction of highly protein-bound drugs,
potentially intensifying both therapeutic and adverse effects.
Q6
A patient asks why some medications are given with food while others must be taken on an empty stomach.
Which pharmacokinetic process is most directly affected by the presence of food?
A. Only renal excretion of the unchanged drug.
B. Absorption rate and sometimes extent of absorption from the gastrointestinal tract.
C. Binding of the drug to plasma proteins after it has entered the bloodstream.
D. The drug’s affinity for its target receptor in the central nervous system.
Correct Answer: B
Rationale:
Food can delay gastric emptying, alter pH, or bind drug molecules, thereby changing the rate and sometimes the extent of
gastrointestinal absorption. Receptor affinity and plasma-protein binding occur after absorption.
NSG 318 EXAM 3 — 2026/2027 Official Exam Page 3
NSG 318 EXAM 3 — 2026/2027 Official Exam
A+
Complete Blueprint Coverage
A+ 5 100%
QUESTIONS VERIFIED CORE DOMAINS COVERED RATIONALES INCLUDED
CATEGORIES
1. Pharmacokinetics, Pharmacodynamics, and Safe Administration
2. Autonomic Nervous System Pharmacology
3. Cardiovascular, Renal, and Diuretic Agents
4. Central Nervous System, Analgesics, and Sedatives
5. Antimicrobial, Endocrine, and Respiratory Medications
STUVIAACTUALEXAM
,1. Pharmacokinetics, Pharmacodynamics, and Safe Administration
Q1
A nurse is preparing to administer a medication with a narrow therapeutic index. The patient asks why blood
levels must be checked frequently. Which explanation best describes the clinical importance of a narrow
therapeutic index?
A. The difference between the effective dose and the toxic dose is small, so levels must be monitored to stay within
the safe and effective range.
B. The drug is always safe at any dose, so laboratory monitoring is only for research purposes.
C. Narrow therapeutic index means the drug is excreted unchanged and never requires dose adjustment.
D. The term indicates that the medication has no adverse effects even when levels are elevated.
Correct Answer: A
Rationale:
A narrow therapeutic index means the margin between therapeutic and toxic concentrations is small. Monitoring plasma levels
helps keep the patient within the therapeutic window and avoid toxicity.
Q2
A patient with hepatic cirrhosis is prescribed a drug that undergoes extensive first-pass metabolism. The nurse
anticipates which change in the drug’s behavior compared with a patient who has normal liver function?
A. Complete absence of drug effect because the liver is required for activation.
B. Higher bioavailability and greater systemic exposure after oral administration, often requiring a lower dose.
C. Faster clearance and the need for higher doses to achieve any effect.
D. No change in pharmacokinetics because first-pass metabolism occurs only in the kidney.
Correct Answer: B
Rationale:
Impaired hepatic function reduces first-pass extraction, increasing the fraction of oral drug that reaches systemic circulation.
Dose reduction is frequently required to prevent toxicity.
Q3
A nurse is teaching a student about the difference between agonists and antagonists. The student correctly
identifies which statement as true?
A. Both agonists and antagonists always produce the same maximal response when given at high doses.
B. Antagonists activate receptors more strongly than full agonists.
C. An agonist binds to a receptor and produces a response; an antagonist binds and blocks the response of an
agonist.
D. Agonists can only bind to receptors located on the cell nucleus.
Correct Answer: C
Rationale:
Agonists activate receptors and elicit a pharmacologic effect. Antagonists occupy the receptor without activating it, thereby
preventing agonist binding and response.
, Q4
A patient is receiving a continuous intravenous infusion of a drug that is eliminated primarily by the kidneys. The
patient’s creatinine clearance has declined from 90 mL/min to 25 mL/min. Which action is most appropriate?
A. Increase the infusion rate to compensate for reduced kidney function.
B. Switch the route to intramuscular injection so that renal clearance is no longer relevant.
C. Discontinue all monitoring of serum levels because renal impairment eliminates the need for them.
D. Anticipate a prolonged half-life and request or implement a reduced dose or extended dosing interval according
to protocol.
Correct Answer: D
Rationale:
Reduced renal clearance slows elimination and extends half-life. Dose reduction or longer intervals prevent accumulation and
toxicity; increasing the rate would worsen accumulation.
Q5
A nurse is preparing an oral medication that is known to be highly protein-bound. The patient has a low serum
albumin level. What clinical implication should the nurse consider?
A. A greater free (unbound) fraction of drug may be present, increasing the risk of enhanced effect or toxicity.
B. Protein binding is irrelevant because albumin does not affect drug distribution.
C. Low albumin always decreases drug effect because less drug is carried in the blood.
D. The nurse should double the dose to overcome the low albumin concentration.
Correct Answer: A
Rationale:
Only unbound drug is pharmacologically active. Hypoalbuminemia increases the free fraction of highly protein-bound drugs,
potentially intensifying both therapeutic and adverse effects.
Q6
A patient asks why some medications are given with food while others must be taken on an empty stomach.
Which pharmacokinetic process is most directly affected by the presence of food?
A. Only renal excretion of the unchanged drug.
B. Absorption rate and sometimes extent of absorption from the gastrointestinal tract.
C. Binding of the drug to plasma proteins after it has entered the bloodstream.
D. The drug’s affinity for its target receptor in the central nervous system.
Correct Answer: B
Rationale:
Food can delay gastric emptying, alter pH, or bind drug molecules, thereby changing the rate and sometimes the extent of
gastrointestinal absorption. Receptor affinity and plasma-protein binding occur after absorption.
NSG 318 EXAM 3 — 2026/2027 Official Exam Page 3
