ATI RN Pharmacology
Proctored Exam
Official Practice Exam - 2026/2027 Edition
200 Questions | 180 Minutes | 80% Passing | Multiple Choice
Table of Contents
Section 1: Pharmacokinetics & Medication Principles (Q1-Q35)
Section 2: Medication Administration & Safety (Q36-Q70)
Section 3: Autonomic & Central Nervous System Drugs (Q71-Q105)
Section 4: Cardiovascular & Renal Drugs (Q106-Q140)
Section 5: Anti-infective, Immune & Respiratory Drugs (Q141-Q170)
Section 6: Endocrine, GI & Specialty Drugs (Q171-Q200)
Instructions
1. This exam contains 200 multiple-choice questions covering pharmacology concepts.
2. You have 180 minutes to complete the exam.
3. A passing score of 80% (160/200 correct) is required.
4. Select the single best answer for each question.
5. Read each question stem carefully before choosing your answer.
6. Review the rationale provided for each answer to reinforce learning.
ATI RN Pharmacology - 2026/2027 | Passing Score: 80% | Page 1
, Section 1: Pharmacokinetics & Medication Principles 2026/2027
Question 1 Section 1: Pharmacokinetics & Medication Principles
A 68-year-old patient with chronic kidney disease is prescribed a medication that is 80% renally excreted. The
nurse anticipates the provider will order which adjustment to prevent drug accumulation?
A. A decreased dose or extended dosing interval
B. An increased dose to compensate for reduced excretion
C. No adjustment because the liver will compensate
D. Intravenous administration instead of oral
Correct Answer: A
Rationale:
Decreased renal function reduces drug clearance, requiring dose reduction or extended intervals to prevent
accumulation and toxicity. Increasing the dose would worsen accumulation, and the liver does not
compensate for renal excretion deficits.
Question 2 Section 1: Pharmacokinetics & Medication Principles
A nursing student asks why a drug with a narrow therapeutic index requires serum drug level monitoring. The
instructor explains that a narrow therapeutic index means the drug has which characteristic?
A. The effective dose is very close to the toxic dose
B. The drug requires extremely large doses to be effective
C. The drug is completely safe at any dose level
D. The drug has a very long half-life requiring loading doses
Correct Answer: B
Rationale:
A narrow therapeutic index means the therapeutic and toxic doses are close together, requiring careful
monitoring to maintain safe but effective levels. Drugs with wide therapeutic indices have larger safety
margins.
ATI RN Pharmacology - 2026/2027 | Passing Score: 80% | Page 2
, Question 3 Section 1: Pharmacokinetics & Medication Principles
A patient taking warfarin is prescribed a new drug that is a cytochrome P450 enzyme inducer. The nurse should
expect this interaction to cause which effect on warfarin levels?
A. Decreased warfarin levels due to accelerated metabolism
B. Increased warfarin levels due to inhibited metabolism
C. No change because warfarin is not metabolized by CYP450
D. Rapid elimination of warfarin through the kidneys
Correct Answer: C
Rationale:
CYP450 inducers accelerate the metabolism of drugs processed by those enzymes, decreasing their plasma
levels and potentially reducing therapeutic effect. An inhibitor, not an inducer, would increase drug levels.
Question 4 Section 1: Pharmacokinetics & Medication Principles
A pharmacist explains that a drug's bioavailability is 40% when taken orally. The nurse understands this means
which statement is true?
A. Only 40% of the administered dose reaches systemic circulation in active form
B. Forty percent of the drug is excreted unchanged by the kidneys
C. The drug is 40% protein-bound in the bloodstream
D. Forty percent of the drug is metabolized on first pass through the liver
Correct Answer: D
Rationale:
Bioavailability refers to the fraction of the administered dose reaching systemic circulation unchanged,
meaning 60% is lost before reaching the bloodstream. It does not refer to protein binding or renal excretion
rates.
Question 5 Section 1: Pharmacokinetics & Medication Principles
A nurse is administering a drug that undergoes extensive first-pass metabolism. Which route of administration
would bypass this effect most effectively?
A. Sublingual
B. Oral
C. Rectal
D. Enteric-coated oral
Correct Answer: A
Rationale:
Sublingual administration allows the drug to be absorbed directly into the systemic circulation through the oral
mucosa, bypassing hepatic first-pass metabolism. Oral and rectal routes still subject the drug to first-pass
effects.
ATI RN Pharmacology - 2026/2027 | Passing Score: 80% | Page 3
, Question 6 Section 1: Pharmacokinetics & Medication Principles
A patient with liver failure is prescribed a medication that is highly protein-bound. The nurse should monitor for
which potential complication?
A. Increased free drug levels leading to toxicity
B. Decreased drug effect due to enhanced metabolism
C. Rapid elimination of the drug by the kidneys
D. Improved drug absorption from the GI tract
Correct Answer: B
Rationale:
In liver failure, reduced albumin production decreases protein binding, increasing the free (active) drug fraction
and risk of toxicity. More free drug is available at receptor sites, not less.
Question 7 Section 1: Pharmacokinetics & Medication Principles
A nurse calculates that a drug has a half-life of 8 hours. The patient asks how long it will take for the drug to
reach steady state. The nurse responds with which correct timeframe?
A. Approximately 32 to 40 hours
B. Approximately 8 to 16 hours
C. Approximately 80 to 96 hours
D. Exactly one half-life period
Correct Answer: C
Rationale:
Steady state is reached in approximately 4 to 5 half-lives, so 4-5 x 8 hours = 32-40 hours. One or two
half-lives are insufficient for steady state, and 10-12 half-lives far exceeds the needed time.
Question 8 Section 1: Pharmacokinetics & Medication Principles
A patient receives a loading dose of an antiarrhythmic drug with a long half-life. The nurse explains the
rationale for a loading dose is to achieve which goal quickly?
A. Rapid attainment of therapeutic plasma concentration
B. Prevention of all drug-drug interactions
C. Complete elimination of the drug from the body
D. Reduction of adverse side effects
Correct Answer: D
Rationale:
A loading dose rapidly achieves therapeutic plasma concentrations without waiting for steady state through
maintenance dosing alone. It does not prevent interactions, reduce side effects, or promote drug elimination.
ATI RN Pharmacology - 2026/2027 | Passing Score: 80% | Page 4
Proctored Exam
Official Practice Exam - 2026/2027 Edition
200 Questions | 180 Minutes | 80% Passing | Multiple Choice
Table of Contents
Section 1: Pharmacokinetics & Medication Principles (Q1-Q35)
Section 2: Medication Administration & Safety (Q36-Q70)
Section 3: Autonomic & Central Nervous System Drugs (Q71-Q105)
Section 4: Cardiovascular & Renal Drugs (Q106-Q140)
Section 5: Anti-infective, Immune & Respiratory Drugs (Q141-Q170)
Section 6: Endocrine, GI & Specialty Drugs (Q171-Q200)
Instructions
1. This exam contains 200 multiple-choice questions covering pharmacology concepts.
2. You have 180 minutes to complete the exam.
3. A passing score of 80% (160/200 correct) is required.
4. Select the single best answer for each question.
5. Read each question stem carefully before choosing your answer.
6. Review the rationale provided for each answer to reinforce learning.
ATI RN Pharmacology - 2026/2027 | Passing Score: 80% | Page 1
, Section 1: Pharmacokinetics & Medication Principles 2026/2027
Question 1 Section 1: Pharmacokinetics & Medication Principles
A 68-year-old patient with chronic kidney disease is prescribed a medication that is 80% renally excreted. The
nurse anticipates the provider will order which adjustment to prevent drug accumulation?
A. A decreased dose or extended dosing interval
B. An increased dose to compensate for reduced excretion
C. No adjustment because the liver will compensate
D. Intravenous administration instead of oral
Correct Answer: A
Rationale:
Decreased renal function reduces drug clearance, requiring dose reduction or extended intervals to prevent
accumulation and toxicity. Increasing the dose would worsen accumulation, and the liver does not
compensate for renal excretion deficits.
Question 2 Section 1: Pharmacokinetics & Medication Principles
A nursing student asks why a drug with a narrow therapeutic index requires serum drug level monitoring. The
instructor explains that a narrow therapeutic index means the drug has which characteristic?
A. The effective dose is very close to the toxic dose
B. The drug requires extremely large doses to be effective
C. The drug is completely safe at any dose level
D. The drug has a very long half-life requiring loading doses
Correct Answer: B
Rationale:
A narrow therapeutic index means the therapeutic and toxic doses are close together, requiring careful
monitoring to maintain safe but effective levels. Drugs with wide therapeutic indices have larger safety
margins.
ATI RN Pharmacology - 2026/2027 | Passing Score: 80% | Page 2
, Question 3 Section 1: Pharmacokinetics & Medication Principles
A patient taking warfarin is prescribed a new drug that is a cytochrome P450 enzyme inducer. The nurse should
expect this interaction to cause which effect on warfarin levels?
A. Decreased warfarin levels due to accelerated metabolism
B. Increased warfarin levels due to inhibited metabolism
C. No change because warfarin is not metabolized by CYP450
D. Rapid elimination of warfarin through the kidneys
Correct Answer: C
Rationale:
CYP450 inducers accelerate the metabolism of drugs processed by those enzymes, decreasing their plasma
levels and potentially reducing therapeutic effect. An inhibitor, not an inducer, would increase drug levels.
Question 4 Section 1: Pharmacokinetics & Medication Principles
A pharmacist explains that a drug's bioavailability is 40% when taken orally. The nurse understands this means
which statement is true?
A. Only 40% of the administered dose reaches systemic circulation in active form
B. Forty percent of the drug is excreted unchanged by the kidneys
C. The drug is 40% protein-bound in the bloodstream
D. Forty percent of the drug is metabolized on first pass through the liver
Correct Answer: D
Rationale:
Bioavailability refers to the fraction of the administered dose reaching systemic circulation unchanged,
meaning 60% is lost before reaching the bloodstream. It does not refer to protein binding or renal excretion
rates.
Question 5 Section 1: Pharmacokinetics & Medication Principles
A nurse is administering a drug that undergoes extensive first-pass metabolism. Which route of administration
would bypass this effect most effectively?
A. Sublingual
B. Oral
C. Rectal
D. Enteric-coated oral
Correct Answer: A
Rationale:
Sublingual administration allows the drug to be absorbed directly into the systemic circulation through the oral
mucosa, bypassing hepatic first-pass metabolism. Oral and rectal routes still subject the drug to first-pass
effects.
ATI RN Pharmacology - 2026/2027 | Passing Score: 80% | Page 3
, Question 6 Section 1: Pharmacokinetics & Medication Principles
A patient with liver failure is prescribed a medication that is highly protein-bound. The nurse should monitor for
which potential complication?
A. Increased free drug levels leading to toxicity
B. Decreased drug effect due to enhanced metabolism
C. Rapid elimination of the drug by the kidneys
D. Improved drug absorption from the GI tract
Correct Answer: B
Rationale:
In liver failure, reduced albumin production decreases protein binding, increasing the free (active) drug fraction
and risk of toxicity. More free drug is available at receptor sites, not less.
Question 7 Section 1: Pharmacokinetics & Medication Principles
A nurse calculates that a drug has a half-life of 8 hours. The patient asks how long it will take for the drug to
reach steady state. The nurse responds with which correct timeframe?
A. Approximately 32 to 40 hours
B. Approximately 8 to 16 hours
C. Approximately 80 to 96 hours
D. Exactly one half-life period
Correct Answer: C
Rationale:
Steady state is reached in approximately 4 to 5 half-lives, so 4-5 x 8 hours = 32-40 hours. One or two
half-lives are insufficient for steady state, and 10-12 half-lives far exceeds the needed time.
Question 8 Section 1: Pharmacokinetics & Medication Principles
A patient receives a loading dose of an antiarrhythmic drug with a long half-life. The nurse explains the
rationale for a loading dose is to achieve which goal quickly?
A. Rapid attainment of therapeutic plasma concentration
B. Prevention of all drug-drug interactions
C. Complete elimination of the drug from the body
D. Reduction of adverse side effects
Correct Answer: D
Rationale:
A loading dose rapidly achieves therapeutic plasma concentrations without waiting for steady state through
maintenance dosing alone. It does not prevent interactions, reduce side effects, or promote drug elimination.
ATI RN Pharmacology - 2026/2027 | Passing Score: 80% | Page 4
