HESI PN Pharmacology Latest Exam | 160 Q&A | 2026/2027 AGRADE Edition
HESI PN Pharmacology Latest Exam
160 Questions and Correct Answers (Detailed Answers) | AGRADE | 2026/2027
Aligned with the 2026-2027 HESI PN Pharmacology Examination Blueprint and NCLEX-PN Test Plan Standards
This comprehensive exam contains 160 multiple-choice questions covering the full scope of practical nursing
pharmacology. Questions are organized into nine sections aligned with the HESI PN Pharmacology Examination blueprint:
pharmacological principles, medication calculations, cardiovascular, respiratory and anti-infective, endocrine, neurological
and psychotropic, gastrointestinal and renal, pain management and immune, and high-alert medications and patient safety.
Each question presents a clinical scenario or direct recall item with four options (A-D), one correct answer, and a detailed
rationale explaining the underlying pharmacological principle, safety considerations, practical nursing scope of practice,
and test-taking strategy. Approximately 75% of items are scenario-based and 25% are direct recall, reflecting the cognitive
distribution of 30% recall, 50% application, and 20% analysis. Use this exam for self-assessment, NCLEX-PN preparation,
and HESI PN Pharmacology Examination readiness in the 2026/2027 testing cycle.
Section 1: Pharmacological Principles and Safe Medication Administration
Five/Six Rights, Calculations, Routes, and Documentation
Q1: A practical nurse (PN) is preparing to administer a scheduled medication to a patient. Which of the
following represents the "Sixth Right" of medication administration that has been added to the traditional
Five Rights?
A. Right documentation [CORRECT]
B. Right reason
C. Right response
D. Right route
Correct Answer: A
Rationale: The Sixth Right, right documentation, was added to the traditional Five Rights (right patient, right drug, right
dose, right route, right time) to emphasize the importance of accurate and timely recording after medication administration.
Documentation must occur immediately after administration, never before, and should include the drug, dose, route, time,
and the patient's response. While right reason, right response, and right documentation are all critical safety considerations,
the formally recognized Sixth Right in current HESI PN pharmacology standards is right documentation.
Q2: A PN is reviewing pharmacokinetics of a newly ordered medication. Which process describes the
movement of a drug from its site of administration into the systemic circulation?
A. Distribution
B. Metabolism
C. Absorption [CORRECT]
D. Excretion
Correct Answer: C
Rationale: Absorption is the process by which a drug moves from its site of administration into the systemic circulation.
The rate and extent of absorption depend on the route (IV is fastest), drug formulation, blood flow to the site, and surface
area available. Distribution refers to drug movement into tissues; metabolism (biotransformation) is the chemical alteration
of the drug, primarily by the liver; and excretion is removal of the drug from the body, primarily by the kidneys.
Understanding absorption helps the PN anticipate drug onset and educate patients on proper administration technique.
Page 1
,HESI PN Pharmacology Latest Exam | 160 Q&A | 2026/2027 AGRADE Edition
Q3: An elderly patient is receiving multiple medications. The PN recognizes that age-related changes in which
pharmacokinetic process most significantly increase the risk of drug accumulation and toxicity in older
adults?
A. Increased hepatic metabolism
B. Decreased renal excretion [CORRECT]
C. Enhanced gastrointestinal absorption
D. Accelerated distribution to tissues
Correct Answer: B
Rationale: Decreased renal excretion is a hallmark age-related change in older adults that significantly increases the risk of
drug accumulation and toxicity. Glomerular filtration rate declines with age, reducing drug clearance and prolonging
half-life for renally eliminated medications such as digoxin, lithium, and aminoglycosides. Hepatic metabolism also
decreases but typically less dramatically than renal function. The PN should anticipate lower maintenance doses and longer
dosing intervals for renally cleared drugs in geriatric patients, and renal function (creatinine clearance) should guide dosing.
Q4: A patient asks the PN why the prescribed medication should be taken with food. The PN understands that
taking certain medications with food primarily serves which pharmacokinetic purpose?
A. Increases the rate of gastric emptying
B. Decreases drug absorption to prolong action
C. Reduces gastric irritation and slows absorption [CORRECT]
D. Enhances first-pass metabolism in the liver
Correct Answer: C
Rationale: Taking medications with food primarily reduces gastric irritation (especially for NSAIDs, corticosteroids, and
certain antibiotics) and may slow absorption, which can be beneficial for drugs that cause nausea or that need a more gradual
onset. Food does not increase gastric emptying; in fact, fatty meals delay gastric emptying. While food can decrease
absorption of some drugs (e.g., tetracyclines with dairy), this is generally an unwanted effect, not the primary purpose.
First-pass metabolism occurs in the liver after absorption and is not enhanced by food.
Q5: The PN is performing medication reconciliation for a newly admitted patient. Which statement best
describes the primary purpose of medication reconciliation?
A. To verify the patient's allergies to medications
B. To compare the patient's medication orders with all medications the patient has been taking [CORRECT]
C. To educate the patient about each newly prescribed medication
D. To calculate the correct dosage for each home medication
Correct Answer: B
Rationale: Medication reconciliation is the formal process of comparing the patient's medication orders to all of the
medications the patient has been taking (home medications, including over-the-counter, herbal, and as-needed medications)
to identify and resolve discrepancies. This process is required at admission, transfer, and discharge to prevent medication
errors such as omissions, duplications, dosing errors, or drug interactions. While allergy verification, patient education, and
dosing calculation are important safety steps, they are not the defining purpose of medication reconciliation, which is
comparison and resolution of discrepancies.
Page 2
,HESI PN Pharmacology Latest Exam | 160 Q&A | 2026/2027 AGRADE Edition
Q6: A PN is preparing to administer a sublingual nitroglycerin tablet. Which instruction should the PN
provide to the patient to ensure proper medication effectiveness?
A. Swallow the tablet whole with a full glass of water
B. Chew the tablet and then swallow it for faster relief
C. Place the tablet under the tongue and allow it to dissolve completely [CORRECT]
D. Crush the tablet and mix it with applesauce before taking
Correct Answer: C
Rationale: Sublingual nitroglycerin must be placed under the tongue and allowed to dissolve completely to allow direct
absorption into the highly vascular sublingual mucosa, bypassing first-pass hepatic metabolism and producing rapid onset
(1-3 minutes) for acute angina relief. Swallowing, chewing, or crushing the tablet would route the drug through the
gastrointestinal tract, where first-pass metabolism would significantly reduce its effectiveness and delay onset. The PN
should instruct the patient to sit down before administration (due to risk of orthostatic hypotension) and to seek emergency
care if chest pain persists after three doses.
Q7: Which of the following patients is at highest risk for adverse drug reactions due to polypharmacy,
requiring enhanced medication monitoring by the PN?
A. A 25-year-old taking a single oral contraceptive
B. A 40-year-old taking one antihypertensive medication
C. A 78-year-old taking nine prescription medications for chronic conditions [CORRECT]
D. A 16-year-old taking a short course of antibiotics
Correct Answer: C
Rationale: The 78-year-old taking nine prescription medications is at highest risk for adverse drug reactions due to
polypharmacy, defined as the concurrent use of five or more medications. Older adults are particularly vulnerable due to
age-related changes in pharmacokinetics (decreased renal clearance, altered hepatic metabolism, changes in body
composition) and pharmacodynamics (increased receptor sensitivity). Polypharmacy exponentially increases the risk of
drug-drug interactions, adverse effects, falls, and medication errors. The PN should monitor closely, advocate for medication
review, and educate the patient about each medication's purpose and adverse effects.
Q8: A PN witnesses a medication error made by a colleague. Which action should the PN take first according
to safe medication administration principles?
A. Report the colleague to the state board of nursing immediately
B. Document the error in the patient's medical record and notify the provider
C. Ensure the patient's safety and assess for adverse effects, then report per facility protocol [CORRECT]
D. Discuss the error privately with the colleague and not document it
Correct Answer: C
Rationale: The first action is always to ensure patient safety and assess for adverse effects, then report the error per facility
protocol. Patient well-being is the priority. After ensuring safety, the PN should promptly notify the prescriber, document the
error objectively in the medical record (without blame), complete an incident report, and reflect on system factors to prevent
recurrence. Reporting to the state board is not the first action and occurs only for severe negligence. Failing to document or
only discussing privately violates the ethical duty of disclosure and quality improvement principles.
Page 3
, HESI PN Pharmacology Latest Exam | 160 Q&A | 2026/2027 AGRADE Edition
Q9: A patient is receiving a medication that has a narrow therapeutic index. The PN understands that this
means the medication:
A. Has a wide margin of safety between effective and toxic doses
B. Requires routine serum drug level monitoring to maintain therapeutic levels [CORRECT]
C. Can be safely administered without consideration of drug interactions
D. Is rapidly metabolized and excreted by the kidneys
Correct Answer: B
Rationale: A narrow therapeutic index means the difference between a therapeutic dose and a toxic dose is very small,
requiring routine serum drug level monitoring to maintain therapeutic effectiveness while avoiding toxicity. Examples
include digoxin, lithium, warfarin, theophylline, and aminoglycosides. These medications require careful dosing, monitoring
of serum levels, and assessment for signs of toxicity. The PN should never assume a wide safety margin, drug-interaction
freedom, or simple renal elimination for narrow-therapeutic-index drugs; instead, anticipate monitoring schedules and
educate patients about signs of toxicity.
Q10: A PN is administering an intramuscular injection to an adult patient in the dorsogluteal site. Which
anatomical landmark should the PN use to identify the correct injection site and avoid injury to the sciatic
nerve?
A. The acromion process and the iliac crest
B. The greater trochanter and the anterior superior iliac spine
C. The posterior superior iliac spine and the greater trochanter, by drawing an imaginary line between them
[CORRECT]
D. The umbilicus and the anterior iliac crest
Correct Answer: C
Rationale: The dorsogluteal site is identified by drawing an imaginary line from the posterior superior iliac spine to the
greater trochanter of the femur; the injection is given above and outside this line to avoid the sciatic nerve and major blood
vessels. However, current best practice prefers the ventrogluteal site because it is free of major nerves and blood vessels and
is preferred for adults. The PN should be aware that the dorsogluteal site carries higher risk of sciatic nerve injury and is no
longer recommended as a first-line IM site in many facilities.
Q11: Which medication administration route bypasses the first-pass effect of the liver, resulting in higher
bioavailability of the drug?
A. Oral
B. Sublingual [CORRECT]
C. Enteric-coated oral
D. Sustained-release oral
Correct Answer: B
Rationale: Sublingual administration bypasses the first-pass effect because the drug is absorbed directly into the systemic
circulation through the rich vascular network under the tongue, avoiding initial metabolism by the liver. This results in
higher bioavailability and faster onset. Oral, enteric-coated, and sustained-release formulations all go through the
gastrointestinal tract and the portal circulation, subjecting the drug to first-pass hepatic metabolism before reaching systemic
circulation. The PN should understand this principle when administering nitroglycerin, certain hormones, or other
medications formulated for sublingual use.
Page 4
HESI PN Pharmacology Latest Exam
160 Questions and Correct Answers (Detailed Answers) | AGRADE | 2026/2027
Aligned with the 2026-2027 HESI PN Pharmacology Examination Blueprint and NCLEX-PN Test Plan Standards
This comprehensive exam contains 160 multiple-choice questions covering the full scope of practical nursing
pharmacology. Questions are organized into nine sections aligned with the HESI PN Pharmacology Examination blueprint:
pharmacological principles, medication calculations, cardiovascular, respiratory and anti-infective, endocrine, neurological
and psychotropic, gastrointestinal and renal, pain management and immune, and high-alert medications and patient safety.
Each question presents a clinical scenario or direct recall item with four options (A-D), one correct answer, and a detailed
rationale explaining the underlying pharmacological principle, safety considerations, practical nursing scope of practice,
and test-taking strategy. Approximately 75% of items are scenario-based and 25% are direct recall, reflecting the cognitive
distribution of 30% recall, 50% application, and 20% analysis. Use this exam for self-assessment, NCLEX-PN preparation,
and HESI PN Pharmacology Examination readiness in the 2026/2027 testing cycle.
Section 1: Pharmacological Principles and Safe Medication Administration
Five/Six Rights, Calculations, Routes, and Documentation
Q1: A practical nurse (PN) is preparing to administer a scheduled medication to a patient. Which of the
following represents the "Sixth Right" of medication administration that has been added to the traditional
Five Rights?
A. Right documentation [CORRECT]
B. Right reason
C. Right response
D. Right route
Correct Answer: A
Rationale: The Sixth Right, right documentation, was added to the traditional Five Rights (right patient, right drug, right
dose, right route, right time) to emphasize the importance of accurate and timely recording after medication administration.
Documentation must occur immediately after administration, never before, and should include the drug, dose, route, time,
and the patient's response. While right reason, right response, and right documentation are all critical safety considerations,
the formally recognized Sixth Right in current HESI PN pharmacology standards is right documentation.
Q2: A PN is reviewing pharmacokinetics of a newly ordered medication. Which process describes the
movement of a drug from its site of administration into the systemic circulation?
A. Distribution
B. Metabolism
C. Absorption [CORRECT]
D. Excretion
Correct Answer: C
Rationale: Absorption is the process by which a drug moves from its site of administration into the systemic circulation.
The rate and extent of absorption depend on the route (IV is fastest), drug formulation, blood flow to the site, and surface
area available. Distribution refers to drug movement into tissues; metabolism (biotransformation) is the chemical alteration
of the drug, primarily by the liver; and excretion is removal of the drug from the body, primarily by the kidneys.
Understanding absorption helps the PN anticipate drug onset and educate patients on proper administration technique.
Page 1
,HESI PN Pharmacology Latest Exam | 160 Q&A | 2026/2027 AGRADE Edition
Q3: An elderly patient is receiving multiple medications. The PN recognizes that age-related changes in which
pharmacokinetic process most significantly increase the risk of drug accumulation and toxicity in older
adults?
A. Increased hepatic metabolism
B. Decreased renal excretion [CORRECT]
C. Enhanced gastrointestinal absorption
D. Accelerated distribution to tissues
Correct Answer: B
Rationale: Decreased renal excretion is a hallmark age-related change in older adults that significantly increases the risk of
drug accumulation and toxicity. Glomerular filtration rate declines with age, reducing drug clearance and prolonging
half-life for renally eliminated medications such as digoxin, lithium, and aminoglycosides. Hepatic metabolism also
decreases but typically less dramatically than renal function. The PN should anticipate lower maintenance doses and longer
dosing intervals for renally cleared drugs in geriatric patients, and renal function (creatinine clearance) should guide dosing.
Q4: A patient asks the PN why the prescribed medication should be taken with food. The PN understands that
taking certain medications with food primarily serves which pharmacokinetic purpose?
A. Increases the rate of gastric emptying
B. Decreases drug absorption to prolong action
C. Reduces gastric irritation and slows absorption [CORRECT]
D. Enhances first-pass metabolism in the liver
Correct Answer: C
Rationale: Taking medications with food primarily reduces gastric irritation (especially for NSAIDs, corticosteroids, and
certain antibiotics) and may slow absorption, which can be beneficial for drugs that cause nausea or that need a more gradual
onset. Food does not increase gastric emptying; in fact, fatty meals delay gastric emptying. While food can decrease
absorption of some drugs (e.g., tetracyclines with dairy), this is generally an unwanted effect, not the primary purpose.
First-pass metabolism occurs in the liver after absorption and is not enhanced by food.
Q5: The PN is performing medication reconciliation for a newly admitted patient. Which statement best
describes the primary purpose of medication reconciliation?
A. To verify the patient's allergies to medications
B. To compare the patient's medication orders with all medications the patient has been taking [CORRECT]
C. To educate the patient about each newly prescribed medication
D. To calculate the correct dosage for each home medication
Correct Answer: B
Rationale: Medication reconciliation is the formal process of comparing the patient's medication orders to all of the
medications the patient has been taking (home medications, including over-the-counter, herbal, and as-needed medications)
to identify and resolve discrepancies. This process is required at admission, transfer, and discharge to prevent medication
errors such as omissions, duplications, dosing errors, or drug interactions. While allergy verification, patient education, and
dosing calculation are important safety steps, they are not the defining purpose of medication reconciliation, which is
comparison and resolution of discrepancies.
Page 2
,HESI PN Pharmacology Latest Exam | 160 Q&A | 2026/2027 AGRADE Edition
Q6: A PN is preparing to administer a sublingual nitroglycerin tablet. Which instruction should the PN
provide to the patient to ensure proper medication effectiveness?
A. Swallow the tablet whole with a full glass of water
B. Chew the tablet and then swallow it for faster relief
C. Place the tablet under the tongue and allow it to dissolve completely [CORRECT]
D. Crush the tablet and mix it with applesauce before taking
Correct Answer: C
Rationale: Sublingual nitroglycerin must be placed under the tongue and allowed to dissolve completely to allow direct
absorption into the highly vascular sublingual mucosa, bypassing first-pass hepatic metabolism and producing rapid onset
(1-3 minutes) for acute angina relief. Swallowing, chewing, or crushing the tablet would route the drug through the
gastrointestinal tract, where first-pass metabolism would significantly reduce its effectiveness and delay onset. The PN
should instruct the patient to sit down before administration (due to risk of orthostatic hypotension) and to seek emergency
care if chest pain persists after three doses.
Q7: Which of the following patients is at highest risk for adverse drug reactions due to polypharmacy,
requiring enhanced medication monitoring by the PN?
A. A 25-year-old taking a single oral contraceptive
B. A 40-year-old taking one antihypertensive medication
C. A 78-year-old taking nine prescription medications for chronic conditions [CORRECT]
D. A 16-year-old taking a short course of antibiotics
Correct Answer: C
Rationale: The 78-year-old taking nine prescription medications is at highest risk for adverse drug reactions due to
polypharmacy, defined as the concurrent use of five or more medications. Older adults are particularly vulnerable due to
age-related changes in pharmacokinetics (decreased renal clearance, altered hepatic metabolism, changes in body
composition) and pharmacodynamics (increased receptor sensitivity). Polypharmacy exponentially increases the risk of
drug-drug interactions, adverse effects, falls, and medication errors. The PN should monitor closely, advocate for medication
review, and educate the patient about each medication's purpose and adverse effects.
Q8: A PN witnesses a medication error made by a colleague. Which action should the PN take first according
to safe medication administration principles?
A. Report the colleague to the state board of nursing immediately
B. Document the error in the patient's medical record and notify the provider
C. Ensure the patient's safety and assess for adverse effects, then report per facility protocol [CORRECT]
D. Discuss the error privately with the colleague and not document it
Correct Answer: C
Rationale: The first action is always to ensure patient safety and assess for adverse effects, then report the error per facility
protocol. Patient well-being is the priority. After ensuring safety, the PN should promptly notify the prescriber, document the
error objectively in the medical record (without blame), complete an incident report, and reflect on system factors to prevent
recurrence. Reporting to the state board is not the first action and occurs only for severe negligence. Failing to document or
only discussing privately violates the ethical duty of disclosure and quality improvement principles.
Page 3
, HESI PN Pharmacology Latest Exam | 160 Q&A | 2026/2027 AGRADE Edition
Q9: A patient is receiving a medication that has a narrow therapeutic index. The PN understands that this
means the medication:
A. Has a wide margin of safety between effective and toxic doses
B. Requires routine serum drug level monitoring to maintain therapeutic levels [CORRECT]
C. Can be safely administered without consideration of drug interactions
D. Is rapidly metabolized and excreted by the kidneys
Correct Answer: B
Rationale: A narrow therapeutic index means the difference between a therapeutic dose and a toxic dose is very small,
requiring routine serum drug level monitoring to maintain therapeutic effectiveness while avoiding toxicity. Examples
include digoxin, lithium, warfarin, theophylline, and aminoglycosides. These medications require careful dosing, monitoring
of serum levels, and assessment for signs of toxicity. The PN should never assume a wide safety margin, drug-interaction
freedom, or simple renal elimination for narrow-therapeutic-index drugs; instead, anticipate monitoring schedules and
educate patients about signs of toxicity.
Q10: A PN is administering an intramuscular injection to an adult patient in the dorsogluteal site. Which
anatomical landmark should the PN use to identify the correct injection site and avoid injury to the sciatic
nerve?
A. The acromion process and the iliac crest
B. The greater trochanter and the anterior superior iliac spine
C. The posterior superior iliac spine and the greater trochanter, by drawing an imaginary line between them
[CORRECT]
D. The umbilicus and the anterior iliac crest
Correct Answer: C
Rationale: The dorsogluteal site is identified by drawing an imaginary line from the posterior superior iliac spine to the
greater trochanter of the femur; the injection is given above and outside this line to avoid the sciatic nerve and major blood
vessels. However, current best practice prefers the ventrogluteal site because it is free of major nerves and blood vessels and
is preferred for adults. The PN should be aware that the dorsogluteal site carries higher risk of sciatic nerve injury and is no
longer recommended as a first-line IM site in many facilities.
Q11: Which medication administration route bypasses the first-pass effect of the liver, resulting in higher
bioavailability of the drug?
A. Oral
B. Sublingual [CORRECT]
C. Enteric-coated oral
D. Sustained-release oral
Correct Answer: B
Rationale: Sublingual administration bypasses the first-pass effect because the drug is absorbed directly into the systemic
circulation through the rich vascular network under the tongue, avoiding initial metabolism by the liver. This results in
higher bioavailability and faster onset. Oral, enteric-coated, and sustained-release formulations all go through the
gastrointestinal tract and the portal circulation, subjecting the drug to first-pass hepatic metabolism before reaching systemic
circulation. The PN should understand this principle when administering nitroglycerin, certain hormones, or other
medications formulated for sublingual use.
Page 4
