HESI PHARMACOLOGY – QUESTIONS AND ANSWERS | VERIFIED AND WELL
DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED PASS | LATEST
EXAM UPDATE | EXAM PREP | STUDY GUIDE | PRACTICE TEST
CORE DOMAINS
1. Pharmacokinetics and pharmacodynamics
2. Medication administration and patient safety
3. Cardiovascular and hematologic medications
4. Respiratory and gastrointestinal medications
5. Endocrine and metabolic medications
6. Antimicrobial and anti-infective therapy
7. Central nervous system and psychiatric medications
8. Pain management and anti-inflammatory medications
9. Medication interactions, adverse effects, and contraindications
10. Patient education, monitoring, and clinical judgment
INTRODUCTION
This HESI Pharmacology practice test focuses on the medication knowledge and clinical
judgment expected of nursing students. Pharmacology questions commonly require more than
recalling drug names; candidates must understand mechanisms of action, therapeutic effects,
adverse reactions, contraindications, interactions, monitoring requirements, and appropriate
patient teaching. HESI pharmacology preparation also benefits from applying medication
knowledge to realistic clinical situations. The questions below combine foundational concepts
with scenario-based decisions involving safety, prioritization, and patient care. Use this Practice
Test and Study Guide to identify knowledge gaps and strengthen your reasoning. Understanding
why a medication is used and how it affects the patient is more valuable than memorizing
isolated drug facts. Evolve
SECTION ONE
QUESTIONS 1–50
1. A nurse is reviewing a prescription for a medication that produces its effect by binding to
a specific receptor on a target cell. Which term describes a substance that activates a
receptor and produces a physiological response?
A. Antagonist
B. Inhibitor
C. Agonist
D. Enzyme inducer
,Rationale: An agonist binds to a receptor and activates it to produce a biological response. An
antagonist binds to a receptor but blocks or reduces the action of an agonist.
2. A client receives an oral medication that undergoes extensive metabolism in the liver
before reaching systemic circulation. Which pharmacokinetic process is primarily
responsible for reducing the amount of active drug reaching the circulation?
A. Renal clearance
B. First-pass metabolism
C. Protein binding
D. Glomerular filtration
Rationale: First-pass metabolism occurs when an orally administered drug is metabolized in the
gastrointestinal tract or liver before reaching systemic circulation, potentially reducing
bioavailability.
3. A client taking a newly prescribed medication reports dizziness when standing. Which
assessment is most important initially?
A. Blood pressure in lying and standing positions
B. Serum sodium concentration
C. Abdominal girth
D. Visual acuity
Rationale: Orthostatic blood pressure measurements can identify a medication-related drop in
blood pressure that may increase the client's risk of falls and injury.
4. A nurse administers a medication that has a narrow therapeutic index. What is the
primary implication for patient care?
A. The medication produces effects immediately.
B. The medication cannot cause toxicity.
C. The medication is absorbed only through the stomach.
D. Small differences between therapeutic and toxic concentrations require careful
monitoring.
,Rationale: Drugs with a narrow therapeutic index have a relatively small margin between
effective and toxic concentrations, making accurate dosing and monitoring particularly
important.
5. A client taking warfarin has an international normalized ratio (INR) that is significantly
above the prescribed therapeutic range. Which complication is the nurse most concerned
about?
A. Hyperglycemia
B. Bleeding
C. Constipation
D. Hypertension
Rationale: Excessive anticoagulation increases the risk of bleeding. The nurse should assess for
bleeding and follow the prescribed protocol for an elevated INR.
6. A client receiving digoxin reports nausea and seeing yellow-green halos around lights.
What should the nurse do?
A. Administer the next dose with food.
B. Encourage increased fluid intake.
C. Hold the medication and notify the healthcare provider.
D. Give an additional dose to stabilize the heart rate.
Rationale: Gastrointestinal symptoms and visual disturbances such as yellow or green halos can
indicate digoxin toxicity. The medication should be withheld and the client evaluated promptly.
7. Which finding should a nurse recognize as a potentially serious adverse effect of an
angiotensin-converting enzyme (ACE) inhibitor?
A. Mild thirst
B. Increased appetite
C. Facial and tongue swelling
D. Increased urine concentration
Rationale: Facial, lip, tongue, or airway swelling may indicate angioedema, a potentially life-
threatening reaction associated with ACE inhibitors that requires immediate attention.
, 8. A client taking furosemide is being monitored for electrolyte disturbances. Which
laboratory value is particularly important?
A. Calcium only
B. Hemoglobin
C. Potassium
D. Platelet count
Rationale: Furosemide promotes renal excretion of sodium and water and can also cause
potassium loss. Monitoring potassium helps identify potentially dangerous hypokalemia.
9. A nurse is teaching a client prescribed sublingual nitroglycerin for angina. Which
instruction is appropriate?
A. Swallow the tablet with a full glass of water.
B. Store the tablets in the bathroom medicine cabinet.
C. Take the medication only after severe chest pain has continued for one hour.
D. Place the tablet under the tongue and allow it to dissolve.
Rationale: Sublingual nitroglycerin is placed under the tongue for rapid absorption. It should
not be swallowed because this would delay its intended effect.
10. A client taking a beta blocker has a pulse rate of 52 beats/minute before the scheduled
dose. Which action should the nurse take?
A. Administer the medication and recheck the pulse in 30 minutes.
B. Assess the prescribed parameters and withhold the dose if indicated.
C. Give the medication with caffeine.
D. Double the next dose if the pulse increases.
Rationale: Beta blockers can reduce heart rate. A significant bradycardia should prompt
assessment and comparison with prescribed hold parameters before administration.
11. Which medication is classified as a proton pump inhibitor?
A. Famotidine
DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED PASS | LATEST
EXAM UPDATE | EXAM PREP | STUDY GUIDE | PRACTICE TEST
CORE DOMAINS
1. Pharmacokinetics and pharmacodynamics
2. Medication administration and patient safety
3. Cardiovascular and hematologic medications
4. Respiratory and gastrointestinal medications
5. Endocrine and metabolic medications
6. Antimicrobial and anti-infective therapy
7. Central nervous system and psychiatric medications
8. Pain management and anti-inflammatory medications
9. Medication interactions, adverse effects, and contraindications
10. Patient education, monitoring, and clinical judgment
INTRODUCTION
This HESI Pharmacology practice test focuses on the medication knowledge and clinical
judgment expected of nursing students. Pharmacology questions commonly require more than
recalling drug names; candidates must understand mechanisms of action, therapeutic effects,
adverse reactions, contraindications, interactions, monitoring requirements, and appropriate
patient teaching. HESI pharmacology preparation also benefits from applying medication
knowledge to realistic clinical situations. The questions below combine foundational concepts
with scenario-based decisions involving safety, prioritization, and patient care. Use this Practice
Test and Study Guide to identify knowledge gaps and strengthen your reasoning. Understanding
why a medication is used and how it affects the patient is more valuable than memorizing
isolated drug facts. Evolve
SECTION ONE
QUESTIONS 1–50
1. A nurse is reviewing a prescription for a medication that produces its effect by binding to
a specific receptor on a target cell. Which term describes a substance that activates a
receptor and produces a physiological response?
A. Antagonist
B. Inhibitor
C. Agonist
D. Enzyme inducer
,Rationale: An agonist binds to a receptor and activates it to produce a biological response. An
antagonist binds to a receptor but blocks or reduces the action of an agonist.
2. A client receives an oral medication that undergoes extensive metabolism in the liver
before reaching systemic circulation. Which pharmacokinetic process is primarily
responsible for reducing the amount of active drug reaching the circulation?
A. Renal clearance
B. First-pass metabolism
C. Protein binding
D. Glomerular filtration
Rationale: First-pass metabolism occurs when an orally administered drug is metabolized in the
gastrointestinal tract or liver before reaching systemic circulation, potentially reducing
bioavailability.
3. A client taking a newly prescribed medication reports dizziness when standing. Which
assessment is most important initially?
A. Blood pressure in lying and standing positions
B. Serum sodium concentration
C. Abdominal girth
D. Visual acuity
Rationale: Orthostatic blood pressure measurements can identify a medication-related drop in
blood pressure that may increase the client's risk of falls and injury.
4. A nurse administers a medication that has a narrow therapeutic index. What is the
primary implication for patient care?
A. The medication produces effects immediately.
B. The medication cannot cause toxicity.
C. The medication is absorbed only through the stomach.
D. Small differences between therapeutic and toxic concentrations require careful
monitoring.
,Rationale: Drugs with a narrow therapeutic index have a relatively small margin between
effective and toxic concentrations, making accurate dosing and monitoring particularly
important.
5. A client taking warfarin has an international normalized ratio (INR) that is significantly
above the prescribed therapeutic range. Which complication is the nurse most concerned
about?
A. Hyperglycemia
B. Bleeding
C. Constipation
D. Hypertension
Rationale: Excessive anticoagulation increases the risk of bleeding. The nurse should assess for
bleeding and follow the prescribed protocol for an elevated INR.
6. A client receiving digoxin reports nausea and seeing yellow-green halos around lights.
What should the nurse do?
A. Administer the next dose with food.
B. Encourage increased fluid intake.
C. Hold the medication and notify the healthcare provider.
D. Give an additional dose to stabilize the heart rate.
Rationale: Gastrointestinal symptoms and visual disturbances such as yellow or green halos can
indicate digoxin toxicity. The medication should be withheld and the client evaluated promptly.
7. Which finding should a nurse recognize as a potentially serious adverse effect of an
angiotensin-converting enzyme (ACE) inhibitor?
A. Mild thirst
B. Increased appetite
C. Facial and tongue swelling
D. Increased urine concentration
Rationale: Facial, lip, tongue, or airway swelling may indicate angioedema, a potentially life-
threatening reaction associated with ACE inhibitors that requires immediate attention.
, 8. A client taking furosemide is being monitored for electrolyte disturbances. Which
laboratory value is particularly important?
A. Calcium only
B. Hemoglobin
C. Potassium
D. Platelet count
Rationale: Furosemide promotes renal excretion of sodium and water and can also cause
potassium loss. Monitoring potassium helps identify potentially dangerous hypokalemia.
9. A nurse is teaching a client prescribed sublingual nitroglycerin for angina. Which
instruction is appropriate?
A. Swallow the tablet with a full glass of water.
B. Store the tablets in the bathroom medicine cabinet.
C. Take the medication only after severe chest pain has continued for one hour.
D. Place the tablet under the tongue and allow it to dissolve.
Rationale: Sublingual nitroglycerin is placed under the tongue for rapid absorption. It should
not be swallowed because this would delay its intended effect.
10. A client taking a beta blocker has a pulse rate of 52 beats/minute before the scheduled
dose. Which action should the nurse take?
A. Administer the medication and recheck the pulse in 30 minutes.
B. Assess the prescribed parameters and withhold the dose if indicated.
C. Give the medication with caffeine.
D. Double the next dose if the pulse increases.
Rationale: Beta blockers can reduce heart rate. A significant bradycardia should prompt
assessment and comparison with prescribed hold parameters before administration.
11. Which medication is classified as a proton pump inhibitor?
A. Famotidine
