HESI PHARMACOLOGY NURSING EXAM – PRACTICE
QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT
DOWNLOAD PDF.
Core Domains
Pharmacokinetics and Pharmacodynamics
Dosage Calculations and Safe Administration
Antimicrobial and Antiviral Agents
Cardiovascular and Renal Medications
Endocrine and Metabolic Agents
Neurological and Psychotropic Medications
Respiratory and Gastrointestinal Agents
Immune System and Pain Management
Introduction
This comprehensive assessment is designed to evaluate the
clinical proficiency and pharmacological knowledge required for
nursing practice. The examination focuses on the safe
administration of medications, monitoring of therapeutic effects,
and the identification of adverse reactions. Through a combination
of foundational theory and scenario-based questions, candidates
,must demonstrate critical thinking and professional judgment in
real-world clinical applications. The assessment covers diverse
drug classifications, regulatory standards, and ethical
considerations. Each question is structured to mirror the rigors of
professional certification, ensuring that nursing students are
prepared to make informed, evidence-based decisions in a fast-
paced healthcare environment to ensure patient safety and optimal
outcomes.
SECTION ONE: QUESTIONS 1–100
1. A patient is prescribed digoxin for heart failure. Which
laboratory value should the nurse prioritize checking before
administration?
A. Serum sodium
B. Serum potassium
C. Serum glucose
D. Serum calcium
🟢 B. Serum potassium
🔴 RATIONALE: Hypokalemia increases the risk of digoxin
toxicity. The nurse must monitor potassium levels closely, as low
,levels can sensitize the myocardium to the drug, leading to life-
threatening arrhythmias.
2. A nurse is preparing to administer sublingual nitroglycerin to a
patient with chest pain. What is the primary mechanism of
action for this medication?
A. Increasing myocardial contractility
B. Constricting peripheral veins
C. Promoting vasodilation of coronary arteries
D. Inhibiting platelet aggregation
🟢 C. Promoting vasodilation of coronary arteries
🔴 RATIONALE: Nitroglycerin acts directly on vascular smooth
muscle to cause vasodilation, which increases blood flow and
oxygen delivery to the myocardium while reducing preload and
afterload.
3. Which instruction should the nurse include for a patient newly
prescribed alendronate for osteoporosis?
A. Take the medication with a full glass of milk.
B. Lie down for 30 minutes after taking the dose.
, C. Take the medication on an empty stomach with plain water.
D. Take the medication right before bedtime.
🟢 C. Take the medication on an empty stomach with plain water.
🔴 RATIONALE: Alendronate must be taken with plain water first
thing in the morning on an empty stomach to ensure absorption.
The patient must remain upright for at least 30 minutes to prevent
esophageal irritation.
4. A patient receiving heparin therapy has an Activated Partial
Thromboplastin Time (aPTT) of 95 seconds (control 25–35
seconds). What is the nurse’s priority action?
A. Continue the infusion at the current rate.
B. Increase the infusion rate.
C. Stop the infusion and notify the provider.
D. Administer Vitamin K.
🟢 C. Stop the infusion and notify the provider.
🔴 RATIONALE: An aPTT of 95 seconds is significantly above the
therapeutic range (typically 1.5 to 2.5 times the control). The
priority is to stop the heparin to prevent hemorrhage and consult
the physician.
QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT
DOWNLOAD PDF.
Core Domains
Pharmacokinetics and Pharmacodynamics
Dosage Calculations and Safe Administration
Antimicrobial and Antiviral Agents
Cardiovascular and Renal Medications
Endocrine and Metabolic Agents
Neurological and Psychotropic Medications
Respiratory and Gastrointestinal Agents
Immune System and Pain Management
Introduction
This comprehensive assessment is designed to evaluate the
clinical proficiency and pharmacological knowledge required for
nursing practice. The examination focuses on the safe
administration of medications, monitoring of therapeutic effects,
and the identification of adverse reactions. Through a combination
of foundational theory and scenario-based questions, candidates
,must demonstrate critical thinking and professional judgment in
real-world clinical applications. The assessment covers diverse
drug classifications, regulatory standards, and ethical
considerations. Each question is structured to mirror the rigors of
professional certification, ensuring that nursing students are
prepared to make informed, evidence-based decisions in a fast-
paced healthcare environment to ensure patient safety and optimal
outcomes.
SECTION ONE: QUESTIONS 1–100
1. A patient is prescribed digoxin for heart failure. Which
laboratory value should the nurse prioritize checking before
administration?
A. Serum sodium
B. Serum potassium
C. Serum glucose
D. Serum calcium
🟢 B. Serum potassium
🔴 RATIONALE: Hypokalemia increases the risk of digoxin
toxicity. The nurse must monitor potassium levels closely, as low
,levels can sensitize the myocardium to the drug, leading to life-
threatening arrhythmias.
2. A nurse is preparing to administer sublingual nitroglycerin to a
patient with chest pain. What is the primary mechanism of
action for this medication?
A. Increasing myocardial contractility
B. Constricting peripheral veins
C. Promoting vasodilation of coronary arteries
D. Inhibiting platelet aggregation
🟢 C. Promoting vasodilation of coronary arteries
🔴 RATIONALE: Nitroglycerin acts directly on vascular smooth
muscle to cause vasodilation, which increases blood flow and
oxygen delivery to the myocardium while reducing preload and
afterload.
3. Which instruction should the nurse include for a patient newly
prescribed alendronate for osteoporosis?
A. Take the medication with a full glass of milk.
B. Lie down for 30 minutes after taking the dose.
, C. Take the medication on an empty stomach with plain water.
D. Take the medication right before bedtime.
🟢 C. Take the medication on an empty stomach with plain water.
🔴 RATIONALE: Alendronate must be taken with plain water first
thing in the morning on an empty stomach to ensure absorption.
The patient must remain upright for at least 30 minutes to prevent
esophageal irritation.
4. A patient receiving heparin therapy has an Activated Partial
Thromboplastin Time (aPTT) of 95 seconds (control 25–35
seconds). What is the nurse’s priority action?
A. Continue the infusion at the current rate.
B. Increase the infusion rate.
C. Stop the infusion and notify the provider.
D. Administer Vitamin K.
🟢 C. Stop the infusion and notify the provider.
🔴 RATIONALE: An aPTT of 95 seconds is significantly above the
therapeutic range (typically 1.5 to 2.5 times the control). The
priority is to stop the heparin to prevent hemorrhage and consult
the physician.
