ATI Pharmacology Exam Cheat Sheet 2026 |
Quick Drug Class Review, Nursing
Rationales & High-Yield Study Guide | Just
Released This Year PDF | Updated This Year
ATI PHARMACOLOGY EXAM CHEAT SHEET 2026
• Comprehensive high-yield drug class review with updated mechanisms of
action, nursing considerations, and evidence-based rationales to support rapid
clinical decision-making and retention for certification success.
• Use this guide for active recall practice: study 15–20 questions daily, review
rationales thoroughly, and focus on mastering drug classifications before
individual agents to build lasting pharmacology competency.
QUESTION 1
A patient receiving metoprolol for hypertension reports dizziness upon
standing. Which adverse effect is this patient most likely experiencing?
A) Hypertension rebound
B) Orthostatic hypotension
C) Reflex tachycardia
D) Bronchospasm
E) Hyperglycemia
B) Orthostatic hypotension
Beta-blockers like metoprolol cause vasodilation and decreased cardiac output,
leading to reduced blood pressure. When a patient stands, gravity redistributes
blood volume, and the impaired compensatory vasoconstriction from beta-
blockade results in dizziness. This is a classic adverse effect requiring patient
education about rising slowly from sitting or lying positions.
QUESTION 2
,Which medication is contraindicated in a patient with acute angle-closure
glaucoma?
A) Metformin
B) Diphenhydramine
C) Lisinopril
D) Metoprolol
E) Atorvastatin
B) Diphenhydramine
Diphenhydramine is an anticholinergic agent that causes pupil dilation (mydriasis)
and increases intraocular pressure. In acute angle-closure glaucoma, this can
precipitate a crisis. Anticholinergics are absolutely contraindicated in this condition
as they worsen the angle closure and increase aqueous humor pressure
irreversibly.
QUESTION 3
A nurse is administering warfarin to a patient. Which vitamin should be
restricted in the diet to prevent interactions?
A) Vitamin A
B) Vitamin C
C) Vitamin K
D) Vitamin D
E) Vitamin E
C) Vitamin K
Vitamin K is a cofactor for clotting factors II, VII, IX, and X. Warfarin inhibits vitamin
K-dependent clotting factors. Excessive dietary vitamin K intake antagonizes
warfarin's anticoagulant effects, reducing its efficacy. Patients must maintain
,consistent (not zero) vitamin K intake to maintain stable INR levels and predictable
anticoagulation.
QUESTION 4
Which medication used to treat Parkinson disease works by inhibiting
monoamine oxidase-B (MAO-B)?
A) Levodopa
B) Bromocriptine
C) Selegiline
D) Benztropine
E) Amantadine
C) Selegiline
Selegiline is a selective irreversible MAO-B inhibitor that reduces the breakdown of
dopamine in the brain, thereby extending dopamine availability and enhancing
levodopa's effects. It is often used as an adjunct to levodopa therapy in advanced
Parkinson disease. MAO-B inhibition is selective for the brain enzyme, reducing
systemic side effects compared to non-selective MAO inhibitors.
QUESTION 5
A patient is prescribed lisinopril for hypertension. Which electrolyte
imbalance is this patient at risk for developing?
A) Hypokalemia
B) Hyperkalemia
C) Hyponatremia
D) Hypercalcemia
E) Hypomagnesemia
, B) Hyperkalemia
ACE inhibitors like lisinopril block aldosterone production by inhibiting angiotensin
II formation. Aldosterone normally promotes sodium reabsorption and potassium
excretion in the kidneys. Without adequate aldosterone activity, potassium is
retained, leading to hyperkalemia. Serum potassium monitoring is essential,
especially in patients with renal impairment or concurrent NSAID/potassium-
sparing diuretic use.
QUESTION 6
Which antibiotic class is most likely to cause photosensitivity reactions?
A) Penicillins
B) Cephalosporins
C) Tetracyclines
D) Aminoglycosides
E) Macrolides
C) Tetracyclines
Tetracyclines, particularly doxycycline and minocycline, are known for causing
phototoxic reactions when exposed to sunlight or UV radiation. Patients must be
advised to use broad-spectrum sunscreen (SPF 30+), wear protective clothing, and
avoid excessive sun exposure during therapy. This reaction is concentration-
dependent and reversible upon discontinuation.
QUESTION 7
A patient on methotrexate for rheumatoid arthritis requires concurrent folic
acid supplementation. Why is this necessary?
A) To enhance methotrexate's efficacy
B) To offset methotrexate's toxicity on rapidly dividing cells
Quick Drug Class Review, Nursing
Rationales & High-Yield Study Guide | Just
Released This Year PDF | Updated This Year
ATI PHARMACOLOGY EXAM CHEAT SHEET 2026
• Comprehensive high-yield drug class review with updated mechanisms of
action, nursing considerations, and evidence-based rationales to support rapid
clinical decision-making and retention for certification success.
• Use this guide for active recall practice: study 15–20 questions daily, review
rationales thoroughly, and focus on mastering drug classifications before
individual agents to build lasting pharmacology competency.
QUESTION 1
A patient receiving metoprolol for hypertension reports dizziness upon
standing. Which adverse effect is this patient most likely experiencing?
A) Hypertension rebound
B) Orthostatic hypotension
C) Reflex tachycardia
D) Bronchospasm
E) Hyperglycemia
B) Orthostatic hypotension
Beta-blockers like metoprolol cause vasodilation and decreased cardiac output,
leading to reduced blood pressure. When a patient stands, gravity redistributes
blood volume, and the impaired compensatory vasoconstriction from beta-
blockade results in dizziness. This is a classic adverse effect requiring patient
education about rising slowly from sitting or lying positions.
QUESTION 2
,Which medication is contraindicated in a patient with acute angle-closure
glaucoma?
A) Metformin
B) Diphenhydramine
C) Lisinopril
D) Metoprolol
E) Atorvastatin
B) Diphenhydramine
Diphenhydramine is an anticholinergic agent that causes pupil dilation (mydriasis)
and increases intraocular pressure. In acute angle-closure glaucoma, this can
precipitate a crisis. Anticholinergics are absolutely contraindicated in this condition
as they worsen the angle closure and increase aqueous humor pressure
irreversibly.
QUESTION 3
A nurse is administering warfarin to a patient. Which vitamin should be
restricted in the diet to prevent interactions?
A) Vitamin A
B) Vitamin C
C) Vitamin K
D) Vitamin D
E) Vitamin E
C) Vitamin K
Vitamin K is a cofactor for clotting factors II, VII, IX, and X. Warfarin inhibits vitamin
K-dependent clotting factors. Excessive dietary vitamin K intake antagonizes
warfarin's anticoagulant effects, reducing its efficacy. Patients must maintain
,consistent (not zero) vitamin K intake to maintain stable INR levels and predictable
anticoagulation.
QUESTION 4
Which medication used to treat Parkinson disease works by inhibiting
monoamine oxidase-B (MAO-B)?
A) Levodopa
B) Bromocriptine
C) Selegiline
D) Benztropine
E) Amantadine
C) Selegiline
Selegiline is a selective irreversible MAO-B inhibitor that reduces the breakdown of
dopamine in the brain, thereby extending dopamine availability and enhancing
levodopa's effects. It is often used as an adjunct to levodopa therapy in advanced
Parkinson disease. MAO-B inhibition is selective for the brain enzyme, reducing
systemic side effects compared to non-selective MAO inhibitors.
QUESTION 5
A patient is prescribed lisinopril for hypertension. Which electrolyte
imbalance is this patient at risk for developing?
A) Hypokalemia
B) Hyperkalemia
C) Hyponatremia
D) Hypercalcemia
E) Hypomagnesemia
, B) Hyperkalemia
ACE inhibitors like lisinopril block aldosterone production by inhibiting angiotensin
II formation. Aldosterone normally promotes sodium reabsorption and potassium
excretion in the kidneys. Without adequate aldosterone activity, potassium is
retained, leading to hyperkalemia. Serum potassium monitoring is essential,
especially in patients with renal impairment or concurrent NSAID/potassium-
sparing diuretic use.
QUESTION 6
Which antibiotic class is most likely to cause photosensitivity reactions?
A) Penicillins
B) Cephalosporins
C) Tetracyclines
D) Aminoglycosides
E) Macrolides
C) Tetracyclines
Tetracyclines, particularly doxycycline and minocycline, are known for causing
phototoxic reactions when exposed to sunlight or UV radiation. Patients must be
advised to use broad-spectrum sunscreen (SPF 30+), wear protective clothing, and
avoid excessive sun exposure during therapy. This reaction is concentration-
dependent and reversible upon discontinuation.
QUESTION 7
A patient on methotrexate for rheumatoid arthritis requires concurrent folic
acid supplementation. Why is this necessary?
A) To enhance methotrexate's efficacy
B) To offset methotrexate's toxicity on rapidly dividing cells
