ATI PN Pharmacology Proctored Exam 2026
| Exam Questions, Correct Answers &
Detailed Rationales
ATI PN PHARMACOLOGY PROCTORED EXAM 2026
Exam Questions, Correct Answers & Detailed Rationales
OVERVIEW
• This comprehensive exam contains 200 evidence-based questions designed to
assess mastery of pharmacology concepts, drug classifications, mechanisms of
action, contraindications, side effects, and safe nursing practices—study
systematically by topic area, review detailed rationales for all answers, and use this
material to identify knowledge gaps before your proctored examination.
• Organized by major drug classifications and clinical scenarios, this resource covers
essential medications, dosage calculations, patient education, drug interactions,
and critical safety considerations applicable to practical nursing across all patient
populations and healthcare settings.
QUESTION 1
Which of the following medications is classified as an ACE inhibitor and is
commonly used to manage hypertension?
A) Amlodipine
B) Lisinopril
C) Metoprolol
D) Hydrochlorothiazide
E) Verapamil
✓ CORRECT ANSWER: B) Lisinopril
RATIONALE: Lisinopril is an angiotensin-converting enzyme (ACE) inhibitor that
works by blocking the conversion of angiotensin I to angiotensin II, resulting in
,vasodilation and reduced blood pressure. ACE inhibitors are first-line agents for
hypertension management. Amlodipine is a calcium channel blocker, metoprolol is
a beta-blocker, hydrochlorothiazide is a thiazide diuretic, and verapamil is a calcium
channel blocker—none are ACE inhibitors.
QUESTION 2
A patient taking warfarin reports they have started taking aspirin for mild
headaches without consulting their healthcare provider. What is the primary
concern with this drug interaction?
A) Aspirin increases warfarin metabolism, reducing its effectiveness
B) Aspirin increases the risk of bleeding when combined with warfarin
C) Warfarin decreases aspirin absorption in the GI tract
D) Aspirin causes warfarin to accumulate in the kidneys
E) The combination increases the risk of thrombosis
✓ CORRECT ANSWER: B) Aspirin increases the risk of bleeding when combined
with warfarin
RATIONALE: Both warfarin (an anticoagulant) and aspirin (an antiplatelet agent)
affect hemostasis through different mechanisms. Combining them significantly
increases the risk of life-threatening bleeding. Patients on warfarin should avoid
NSAIDs and aspirin unless specifically prescribed by their provider. This interaction
does not involve altered metabolism or decreased absorption but rather an
additive effect on bleeding risk.
QUESTION 3
Which assessment finding would indicate an adverse effect of digoxin toxicity
in a patient with atrial fibrillation?
A) Blood pressure elevation of 20 mmHg
B) Visual disturbances and nausea
,C) Increased heart rate above 100 bpm
D) Elevated serum potassium levels
E) Severe hypokalemia
✓ CORRECT ANSWER: B) Visual disturbances and nausea
RATIONALE: Digoxin toxicity presents with classic symptoms including visual
disturbances (blurred vision, yellow-green halos around lights), nausea, vomiting,
anorexia, and cardiac arrhythmias. These symptoms occur when serum digoxin
levels exceed the therapeutic range (0.5–2 ng/mL). Elevated blood pressure and
increased heart rate are not typical signs of digoxin toxicity. Digoxin toxicity is often
associated with hypokalemia (low potassium), not hyperkalemia, as low potassium
increases digoxin binding and toxicity risk.
QUESTION 4
A patient is prescribed metformin for type 2 diabetes. Which of the following
is a serious contraindication for this medication?
A) Asthma
B) Severe renal impairment
C) Hypertension
D) Osteoporosis
E) Hypothyroidism
✓ CORRECT ANSWER: B) Severe renal impairment
RATIONALE: Metformin is contraindicated in severe renal impairment (eGFR <30
mL/min/1.73 m²) because the drug is excreted unchanged by the kidneys. Renal
dysfunction increases the risk of lactic acidosis, a rare but life-threatening
complication. Metformin can be used cautiously in mild to moderate renal
impairment with dose adjustments. The other conditions listed are not
contraindications to metformin use.
, QUESTION 5
When administering intravenous penicillin, which assessment finding would
most likely indicate an anaphylactic reaction?
A) Mild rash on the trunk
B) Wheezing, stridor, and hypotension within minutes
C) Delayed rash appearing 48 hours after administration
D) Mild itching at the injection site
E) Slight elevation in temperature
✓ CORRECT ANSWER: B) Wheezing, stridor, and hypotension within minutes
RATIONALE: Anaphylaxis is a severe, immediate hypersensitivity reaction occurring
within minutes of drug administration. Classic signs include wheezing, stridor
(upper airway constriction), hypotension, tachycardia, angioedema, and loss of
consciousness. Penicillins are a common cause of anaphylaxis in susceptible
individuals. A delayed rash is more consistent with a delayed hypersensitivity
reaction. Mild rashes and itching at the site are less concerning but still warrant
monitoring. Immediate recognition and treatment with epinephrine are critical.
QUESTION 6
Which of the following medications would be most appropriate for a patient
experiencing opioid-induced constipation?
A) Loperamide
B) Docusate sodium
C) Bismuth subsalicylate
D) Methylnaltrexone
E) Atropine
✓ CORRECT ANSWER: D) Methylnaltrexone
| Exam Questions, Correct Answers &
Detailed Rationales
ATI PN PHARMACOLOGY PROCTORED EXAM 2026
Exam Questions, Correct Answers & Detailed Rationales
OVERVIEW
• This comprehensive exam contains 200 evidence-based questions designed to
assess mastery of pharmacology concepts, drug classifications, mechanisms of
action, contraindications, side effects, and safe nursing practices—study
systematically by topic area, review detailed rationales for all answers, and use this
material to identify knowledge gaps before your proctored examination.
• Organized by major drug classifications and clinical scenarios, this resource covers
essential medications, dosage calculations, patient education, drug interactions,
and critical safety considerations applicable to practical nursing across all patient
populations and healthcare settings.
QUESTION 1
Which of the following medications is classified as an ACE inhibitor and is
commonly used to manage hypertension?
A) Amlodipine
B) Lisinopril
C) Metoprolol
D) Hydrochlorothiazide
E) Verapamil
✓ CORRECT ANSWER: B) Lisinopril
RATIONALE: Lisinopril is an angiotensin-converting enzyme (ACE) inhibitor that
works by blocking the conversion of angiotensin I to angiotensin II, resulting in
,vasodilation and reduced blood pressure. ACE inhibitors are first-line agents for
hypertension management. Amlodipine is a calcium channel blocker, metoprolol is
a beta-blocker, hydrochlorothiazide is a thiazide diuretic, and verapamil is a calcium
channel blocker—none are ACE inhibitors.
QUESTION 2
A patient taking warfarin reports they have started taking aspirin for mild
headaches without consulting their healthcare provider. What is the primary
concern with this drug interaction?
A) Aspirin increases warfarin metabolism, reducing its effectiveness
B) Aspirin increases the risk of bleeding when combined with warfarin
C) Warfarin decreases aspirin absorption in the GI tract
D) Aspirin causes warfarin to accumulate in the kidneys
E) The combination increases the risk of thrombosis
✓ CORRECT ANSWER: B) Aspirin increases the risk of bleeding when combined
with warfarin
RATIONALE: Both warfarin (an anticoagulant) and aspirin (an antiplatelet agent)
affect hemostasis through different mechanisms. Combining them significantly
increases the risk of life-threatening bleeding. Patients on warfarin should avoid
NSAIDs and aspirin unless specifically prescribed by their provider. This interaction
does not involve altered metabolism or decreased absorption but rather an
additive effect on bleeding risk.
QUESTION 3
Which assessment finding would indicate an adverse effect of digoxin toxicity
in a patient with atrial fibrillation?
A) Blood pressure elevation of 20 mmHg
B) Visual disturbances and nausea
,C) Increased heart rate above 100 bpm
D) Elevated serum potassium levels
E) Severe hypokalemia
✓ CORRECT ANSWER: B) Visual disturbances and nausea
RATIONALE: Digoxin toxicity presents with classic symptoms including visual
disturbances (blurred vision, yellow-green halos around lights), nausea, vomiting,
anorexia, and cardiac arrhythmias. These symptoms occur when serum digoxin
levels exceed the therapeutic range (0.5–2 ng/mL). Elevated blood pressure and
increased heart rate are not typical signs of digoxin toxicity. Digoxin toxicity is often
associated with hypokalemia (low potassium), not hyperkalemia, as low potassium
increases digoxin binding and toxicity risk.
QUESTION 4
A patient is prescribed metformin for type 2 diabetes. Which of the following
is a serious contraindication for this medication?
A) Asthma
B) Severe renal impairment
C) Hypertension
D) Osteoporosis
E) Hypothyroidism
✓ CORRECT ANSWER: B) Severe renal impairment
RATIONALE: Metformin is contraindicated in severe renal impairment (eGFR <30
mL/min/1.73 m²) because the drug is excreted unchanged by the kidneys. Renal
dysfunction increases the risk of lactic acidosis, a rare but life-threatening
complication. Metformin can be used cautiously in mild to moderate renal
impairment with dose adjustments. The other conditions listed are not
contraindications to metformin use.
, QUESTION 5
When administering intravenous penicillin, which assessment finding would
most likely indicate an anaphylactic reaction?
A) Mild rash on the trunk
B) Wheezing, stridor, and hypotension within minutes
C) Delayed rash appearing 48 hours after administration
D) Mild itching at the injection site
E) Slight elevation in temperature
✓ CORRECT ANSWER: B) Wheezing, stridor, and hypotension within minutes
RATIONALE: Anaphylaxis is a severe, immediate hypersensitivity reaction occurring
within minutes of drug administration. Classic signs include wheezing, stridor
(upper airway constriction), hypotension, tachycardia, angioedema, and loss of
consciousness. Penicillins are a common cause of anaphylaxis in susceptible
individuals. A delayed rash is more consistent with a delayed hypersensitivity
reaction. Mild rashes and itching at the site are less concerning but still warrant
monitoring. Immediate recognition and treatment with epinephrine are critical.
QUESTION 6
Which of the following medications would be most appropriate for a patient
experiencing opioid-induced constipation?
A) Loperamide
B) Docusate sodium
C) Bismuth subsalicylate
D) Methylnaltrexone
E) Atropine
✓ CORRECT ANSWER: D) Methylnaltrexone
