RN PHARMACOLOGY A RELIAS EXAM 2026 |
VERIFIED PRACTICE QUESTIONS &
ANSWERS | COMPLETE STUDY GUIDE WITH
DETAILED RATIONALES
RN PHARMACOLOGY A RELIAS EXAM 2026 | VERIFIED PRACTICE QUESTIONS &
ANSWERS | COMPLETE STUDY GUIDE WITH DETAILED RATIONALES
DOCUMENT OVERVIEW:
• This comprehensive study guide contains verified practice questions designed to
prepare you for the RN Pharmacology A RELIAS examination, with detailed
rationales for each answer to reinforce critical thinking and clinical application.
• Study this material by working through questions systematically, reviewing
rationales carefully, and noting key pharmacological principles—complete this
guide multiple times to achieve mastery and build confidence for exam day.
1. QUESTION: A nurse is preparing to administer metoprolol to a patient with
hypertension. Which of the following is the primary mechanism of action for
this medication?
A) Inhibits the renin-angiotensin system
B) Blocks alpha-adrenergic receptors in peripheral blood vessels
C) Blocks beta-1 adrenergic receptors on the heart
D) Directly relaxes smooth muscle in blood vessel walls
E) Increases renal excretion of sodium and water
CORRECT ANSWER: C) Blocks beta-1 adrenergic receptors on the heart
RATIONALE: Metoprolol is a selective beta-1 blocker that primarily works by
blocking beta-1 adrenergic receptors on the myocardium. This action decreases
heart rate, reduces cardiac contractility, and decreases cardiac output, thereby
lowering blood pressure. Option A describes ACE inhibitors; Option B describes
,alpha blockers; Option D describes direct vasodilators; and Option E describes
diuretics. Understanding the mechanism of action is essential for predicting drug
effects and patient responses.
2. QUESTION: A patient receiving warfarin for atrial fibrillation asks the nurse
why they need frequent INR checks. Which statement best explains the
reason for this monitoring?
A) To ensure the medication is being absorbed properly in the GI tract
B) To measure the effectiveness of anticoagulation and prevent bleeding
complications
C) To monitor for allergic reactions to the medication
D) To verify that the patient is taking the medication as prescribed
E) To assess liver and kidney function for drug metabolism
CORRECT ANSWER: B) To measure the effectiveness of anticoagulation and
prevent bleeding complications
RATIONALE: The INR (International Normalized Ratio) is the gold standard for
monitoring warfarin therapy. It measures the time it takes for blood to clot and
indicates the level of anticoagulation. The therapeutic INR range for most
conditions is 2-3, meaning blood takes 2-3 times longer to clot than normal. Regular
INR monitoring helps maintain therapeutic levels (preventing clots while avoiding
excessive bleeding). While liver function affects warfarin metabolism, INR is the
direct measure of anticoagulation effect. Option A is incorrect because INR doesn't
measure absorption; Option C is incorrect because INR doesn't detect allergic
reactions; Option D may be a secondary benefit but isn't the primary reason.
3. QUESTION: A nurse administers acetaminophen to a patient for pain
management. Which adverse effect is most concerning with chronic use or
overdose of this medication?
A) Gastric ulceration
,B) Hepatotoxicity
C) Nephrotoxicity
D) Stevens-Johnson syndrome
E) Cardiovascular collapse
CORRECT ANSWER: B) Hepatotoxicity
RATIONALE: Acetaminophen is metabolized by the liver, and the primary concern
with chronic use or overdose is hepatotoxicity, which can lead to acute liver failure.
The maximum recommended daily dose is 3,000-4,000 mg for adults, and
exceeding this significantly increases risk of liver damage. N-acetylcysteine is the
antidote for acetaminophen overdose as it replenishes glutathione stores needed
for safe metabolism. While Option D (Stevens-Johnson syndrome) can occur, it is
rare and not the most common concern. Options A, C, and E are not typical
concerns with acetaminophen use.
4. QUESTION: A patient is prescribed lisinopril for hypertension. The nurse
should monitor for which common side effect of ACE inhibitors?
A) Tachycardia
B) Hyperkalemia
C) Persistent dry cough
D) Hypoglycemia
E) Increased urinary output
CORRECT ANSWER: C) Persistent dry cough
RATIONALE: A persistent, dry, nonproductive cough occurs in 5-10% of patients
taking ACE inhibitors. This is caused by the accumulation of bradykinin in the lungs
and is not harmful but often bothersome enough to warrant medication
discontinuation. The cough typically resolves within 1-4 weeks of stopping the ACE
inhibitor. While ACE inhibitors can cause hyperkalemia (Option B), this occurs in
patients with renal impairment or those taking potassium-sparing diuretics and is
, not the most common side effect. Options A and D are not typical side effects, and
Option E (increased urinary output) is an effect of diuretics, not ACE inhibitors.
5. QUESTION: A nurse is caring for a patient receiving gentamicin for a serious
gram-negative infection. Which nursing intervention is most important to
prevent a major adverse effect of this aminoglycoside antibiotic?
A) Monitor serum drug levels and maintain adequate hydration
B) Administer the medication with food to enhance absorption
C) Ensure the patient ambulates regularly to prevent thromboembolism
D) Obtain baseline hearing tests and monitor for hearing changes
E) Both A and D
CORRECT ANSWER: E) Both A and D
RATIONALE: Aminoglycosides like gentamicin carry significant risks of both
nephrotoxicity and ototoxicity. To minimize nephrotoxicity, monitoring serum drug
levels and maintaining adequate hydration are critical—gentamicin should be
dosed based on pharmacokinetics and renal function. To minimize ototoxicity
(permanent hearing loss), baseline and periodic hearing assessments should be
performed, especially with prolonged use or high doses. Option B is incorrect
because aminoglycosides should not be taken with food as this reduces absorption.
Option C is not related to gentamicin's primary concerns. Both A and D are
necessary interventions for safe aminoglycoside therapy.
6. QUESTION: A patient with type 2 diabetes is started on metformin. Which
mechanism of action best describes how metformin improves glucose
control?
A) Increases insulin secretion from pancreatic beta cells
B) Decreases hepatic glucose production and increases glucose uptake by cells
C) Inhibits alpha-glucosidase enzymes in the small intestine
VERIFIED PRACTICE QUESTIONS &
ANSWERS | COMPLETE STUDY GUIDE WITH
DETAILED RATIONALES
RN PHARMACOLOGY A RELIAS EXAM 2026 | VERIFIED PRACTICE QUESTIONS &
ANSWERS | COMPLETE STUDY GUIDE WITH DETAILED RATIONALES
DOCUMENT OVERVIEW:
• This comprehensive study guide contains verified practice questions designed to
prepare you for the RN Pharmacology A RELIAS examination, with detailed
rationales for each answer to reinforce critical thinking and clinical application.
• Study this material by working through questions systematically, reviewing
rationales carefully, and noting key pharmacological principles—complete this
guide multiple times to achieve mastery and build confidence for exam day.
1. QUESTION: A nurse is preparing to administer metoprolol to a patient with
hypertension. Which of the following is the primary mechanism of action for
this medication?
A) Inhibits the renin-angiotensin system
B) Blocks alpha-adrenergic receptors in peripheral blood vessels
C) Blocks beta-1 adrenergic receptors on the heart
D) Directly relaxes smooth muscle in blood vessel walls
E) Increases renal excretion of sodium and water
CORRECT ANSWER: C) Blocks beta-1 adrenergic receptors on the heart
RATIONALE: Metoprolol is a selective beta-1 blocker that primarily works by
blocking beta-1 adrenergic receptors on the myocardium. This action decreases
heart rate, reduces cardiac contractility, and decreases cardiac output, thereby
lowering blood pressure. Option A describes ACE inhibitors; Option B describes
,alpha blockers; Option D describes direct vasodilators; and Option E describes
diuretics. Understanding the mechanism of action is essential for predicting drug
effects and patient responses.
2. QUESTION: A patient receiving warfarin for atrial fibrillation asks the nurse
why they need frequent INR checks. Which statement best explains the
reason for this monitoring?
A) To ensure the medication is being absorbed properly in the GI tract
B) To measure the effectiveness of anticoagulation and prevent bleeding
complications
C) To monitor for allergic reactions to the medication
D) To verify that the patient is taking the medication as prescribed
E) To assess liver and kidney function for drug metabolism
CORRECT ANSWER: B) To measure the effectiveness of anticoagulation and
prevent bleeding complications
RATIONALE: The INR (International Normalized Ratio) is the gold standard for
monitoring warfarin therapy. It measures the time it takes for blood to clot and
indicates the level of anticoagulation. The therapeutic INR range for most
conditions is 2-3, meaning blood takes 2-3 times longer to clot than normal. Regular
INR monitoring helps maintain therapeutic levels (preventing clots while avoiding
excessive bleeding). While liver function affects warfarin metabolism, INR is the
direct measure of anticoagulation effect. Option A is incorrect because INR doesn't
measure absorption; Option C is incorrect because INR doesn't detect allergic
reactions; Option D may be a secondary benefit but isn't the primary reason.
3. QUESTION: A nurse administers acetaminophen to a patient for pain
management. Which adverse effect is most concerning with chronic use or
overdose of this medication?
A) Gastric ulceration
,B) Hepatotoxicity
C) Nephrotoxicity
D) Stevens-Johnson syndrome
E) Cardiovascular collapse
CORRECT ANSWER: B) Hepatotoxicity
RATIONALE: Acetaminophen is metabolized by the liver, and the primary concern
with chronic use or overdose is hepatotoxicity, which can lead to acute liver failure.
The maximum recommended daily dose is 3,000-4,000 mg for adults, and
exceeding this significantly increases risk of liver damage. N-acetylcysteine is the
antidote for acetaminophen overdose as it replenishes glutathione stores needed
for safe metabolism. While Option D (Stevens-Johnson syndrome) can occur, it is
rare and not the most common concern. Options A, C, and E are not typical
concerns with acetaminophen use.
4. QUESTION: A patient is prescribed lisinopril for hypertension. The nurse
should monitor for which common side effect of ACE inhibitors?
A) Tachycardia
B) Hyperkalemia
C) Persistent dry cough
D) Hypoglycemia
E) Increased urinary output
CORRECT ANSWER: C) Persistent dry cough
RATIONALE: A persistent, dry, nonproductive cough occurs in 5-10% of patients
taking ACE inhibitors. This is caused by the accumulation of bradykinin in the lungs
and is not harmful but often bothersome enough to warrant medication
discontinuation. The cough typically resolves within 1-4 weeks of stopping the ACE
inhibitor. While ACE inhibitors can cause hyperkalemia (Option B), this occurs in
patients with renal impairment or those taking potassium-sparing diuretics and is
, not the most common side effect. Options A and D are not typical side effects, and
Option E (increased urinary output) is an effect of diuretics, not ACE inhibitors.
5. QUESTION: A nurse is caring for a patient receiving gentamicin for a serious
gram-negative infection. Which nursing intervention is most important to
prevent a major adverse effect of this aminoglycoside antibiotic?
A) Monitor serum drug levels and maintain adequate hydration
B) Administer the medication with food to enhance absorption
C) Ensure the patient ambulates regularly to prevent thromboembolism
D) Obtain baseline hearing tests and monitor for hearing changes
E) Both A and D
CORRECT ANSWER: E) Both A and D
RATIONALE: Aminoglycosides like gentamicin carry significant risks of both
nephrotoxicity and ototoxicity. To minimize nephrotoxicity, monitoring serum drug
levels and maintaining adequate hydration are critical—gentamicin should be
dosed based on pharmacokinetics and renal function. To minimize ototoxicity
(permanent hearing loss), baseline and periodic hearing assessments should be
performed, especially with prolonged use or high doses. Option B is incorrect
because aminoglycosides should not be taken with food as this reduces absorption.
Option C is not related to gentamicin's primary concerns. Both A and D are
necessary interventions for safe aminoglycoside therapy.
6. QUESTION: A patient with type 2 diabetes is started on metformin. Which
mechanism of action best describes how metformin improves glucose
control?
A) Increases insulin secretion from pancreatic beta cells
B) Decreases hepatic glucose production and increases glucose uptake by cells
C) Inhibits alpha-glucosidase enzymes in the small intestine
