ATI Pharmacology 2025 Study Guide: Original
Practice Question Bank & Clinical Rationales
This specialized clinical test-preparation resource provides a comprehensive practice
question bank and verified answers modeled directly after the ATI Pharmacology
Content Mastery Series for 2025. It delivers extensive pre-licensure coverage of high-
alert drug classifications, mechanism of action profiles, intricate therapeutic drug
monitoring, and safe dosage calculations across the lifespan. Nursing students will
master critical client care prioritization methods, advanced pharmacokinetic properties,
and high-yield physiological monitoring indicators to ensure an optimal proficiency level
on their proctored assessment.
1. A nurse is preparing to administer a newly prescribed medication. Which action is most
important before giving the first dose?
A. Ask whether the tablet is easy to swallow
B. Verify the medication against the prescription and allergy history
C. Document that the medication was prepared
D. Ask another client whether the medication caused side effects
Correct Answer: B. Verify the medication against the prescription and allergy history.
Rationale: Verifying the medication order, client identity, allergies, dose, route, and other safety
requirements helps prevent medication errors.
2. A client taking a medication associated with orthostatic hypotension reports dizziness when
standing. Which instruction should the nurse provide?
A. Stand quickly after sitting
B. Restrict oral fluids
C. Change positions slowly
D. Avoid sitting before standing
,Correct Answer: C. Change positions slowly.
Rationale: Gradual position changes reduce dizziness and the risk of falls associated with
orthostatic hypotension.
3. A nurse realizes that the wrong medication was administered to a client. What is the nurse's
priority action?
A. Complete an incident report
B. Assess the client
C. Notify the pharmacy
D. Document the error at the end of the shift
Correct Answer: B. Assess the client.
Rationale: The client's safety is the priority. The nurse should assess for adverse effects and then
follow appropriate notification and reporting procedures.
4. A client asks why a medication is prescribed sublingually. Which response should the nurse
give?
A. "It prevents medication interactions."
B. "It is absorbed rapidly through tissues under the tongue."
C. "It must first pass through the stomach."
D. "It remains in the gastrointestinal tract longer."
Correct Answer: B. "It is absorbed rapidly through tissues under the tongue."
Rationale: Sublingual medications are absorbed through the highly vascular tissue beneath the
tongue, allowing relatively rapid systemic absorption.
5. A medication has a narrow therapeutic index. What should the nurse understand?
A. Toxicity is unlikely
B. The medication has a large safety margin
C. Small changes in concentration can result in toxicity
D. Laboratory monitoring is unnecessary
Correct Answer: C. Small changes in concentration can result in toxicity.
,Rationale: A narrow therapeutic index means the difference between therapeutic and toxic
concentrations is relatively small.
6. A client takes several prescription medications. Why should the nurse regularly review the
client's medication list?
A. Multiple medications always cause toxicity
B. Medications can interact and alter their effects
C. Medications become ineffective when taken together
D. Medication lists are needed only for insurance purposes
Correct Answer: B. Medications can interact and alter their effects.
Rationale: Drug-drug, drug-food, and drug-herbal interactions can increase toxicity or decrease
therapeutic effectiveness.
7. Which assessment should the nurse complete before administering digoxin?
A. Respiratory rate
B. Apical pulse
C. Temperature
D. Oxygen saturation
Correct Answer: B. Apical pulse.
Rationale: Digoxin can cause bradycardia. The nurse should assess the apical pulse before
administration and follow the prescribed parameters for withholding the medication.
8. A client taking digoxin reports nausea, visual changes, and loss of appetite. What should the
nurse suspect?
A. Therapeutic response
B. Digoxin toxicity
C. Hyperglycemia
D. Dehydration only
Correct Answer: B. Digoxin toxicity.
Rationale: Nausea, anorexia, and visual disturbances such as yellow or blurred vision can occur
with digoxin toxicity.
, 9. A client receiving furosemide should be monitored most closely for which electrolyte
imbalance?
A. Hyperkalemia
B. Hypokalemia
C. Hypermagnesemia
D. Hypernatremia
Correct Answer: B. Hypokalemia.
Rationale: Furosemide is a loop diuretic that increases urinary potassium excretion and can
cause hypokalemia.
10. A client taking a medication reports difficulty breathing and swelling of the lips. What
should the nurse do first?
A. Administer the next scheduled dose
B. Encourage oral fluids
C. Treat the reaction as a possible severe allergic response
D. Ask the client to rest for 30 min
Correct Answer: C. Treat the reaction as a possible severe allergic response.
Rationale: Difficulty breathing and facial or lip swelling can indicate a severe hypersensitivity
reaction requiring immediate intervention.
11. Which medication is classified as a beta-adrenergic blocker?
A. Metoprolol
B. Lisinopril
C. Furosemide
D. Losartan
Correct Answer: A. Metoprolol.
Rationale: Metoprolol is a beta-blocker that decreases heart rate, myocardial contractility, and
blood pressure.
Practice Question Bank & Clinical Rationales
This specialized clinical test-preparation resource provides a comprehensive practice
question bank and verified answers modeled directly after the ATI Pharmacology
Content Mastery Series for 2025. It delivers extensive pre-licensure coverage of high-
alert drug classifications, mechanism of action profiles, intricate therapeutic drug
monitoring, and safe dosage calculations across the lifespan. Nursing students will
master critical client care prioritization methods, advanced pharmacokinetic properties,
and high-yield physiological monitoring indicators to ensure an optimal proficiency level
on their proctored assessment.
1. A nurse is preparing to administer a newly prescribed medication. Which action is most
important before giving the first dose?
A. Ask whether the tablet is easy to swallow
B. Verify the medication against the prescription and allergy history
C. Document that the medication was prepared
D. Ask another client whether the medication caused side effects
Correct Answer: B. Verify the medication against the prescription and allergy history.
Rationale: Verifying the medication order, client identity, allergies, dose, route, and other safety
requirements helps prevent medication errors.
2. A client taking a medication associated with orthostatic hypotension reports dizziness when
standing. Which instruction should the nurse provide?
A. Stand quickly after sitting
B. Restrict oral fluids
C. Change positions slowly
D. Avoid sitting before standing
,Correct Answer: C. Change positions slowly.
Rationale: Gradual position changes reduce dizziness and the risk of falls associated with
orthostatic hypotension.
3. A nurse realizes that the wrong medication was administered to a client. What is the nurse's
priority action?
A. Complete an incident report
B. Assess the client
C. Notify the pharmacy
D. Document the error at the end of the shift
Correct Answer: B. Assess the client.
Rationale: The client's safety is the priority. The nurse should assess for adverse effects and then
follow appropriate notification and reporting procedures.
4. A client asks why a medication is prescribed sublingually. Which response should the nurse
give?
A. "It prevents medication interactions."
B. "It is absorbed rapidly through tissues under the tongue."
C. "It must first pass through the stomach."
D. "It remains in the gastrointestinal tract longer."
Correct Answer: B. "It is absorbed rapidly through tissues under the tongue."
Rationale: Sublingual medications are absorbed through the highly vascular tissue beneath the
tongue, allowing relatively rapid systemic absorption.
5. A medication has a narrow therapeutic index. What should the nurse understand?
A. Toxicity is unlikely
B. The medication has a large safety margin
C. Small changes in concentration can result in toxicity
D. Laboratory monitoring is unnecessary
Correct Answer: C. Small changes in concentration can result in toxicity.
,Rationale: A narrow therapeutic index means the difference between therapeutic and toxic
concentrations is relatively small.
6. A client takes several prescription medications. Why should the nurse regularly review the
client's medication list?
A. Multiple medications always cause toxicity
B. Medications can interact and alter their effects
C. Medications become ineffective when taken together
D. Medication lists are needed only for insurance purposes
Correct Answer: B. Medications can interact and alter their effects.
Rationale: Drug-drug, drug-food, and drug-herbal interactions can increase toxicity or decrease
therapeutic effectiveness.
7. Which assessment should the nurse complete before administering digoxin?
A. Respiratory rate
B. Apical pulse
C. Temperature
D. Oxygen saturation
Correct Answer: B. Apical pulse.
Rationale: Digoxin can cause bradycardia. The nurse should assess the apical pulse before
administration and follow the prescribed parameters for withholding the medication.
8. A client taking digoxin reports nausea, visual changes, and loss of appetite. What should the
nurse suspect?
A. Therapeutic response
B. Digoxin toxicity
C. Hyperglycemia
D. Dehydration only
Correct Answer: B. Digoxin toxicity.
Rationale: Nausea, anorexia, and visual disturbances such as yellow or blurred vision can occur
with digoxin toxicity.
, 9. A client receiving furosemide should be monitored most closely for which electrolyte
imbalance?
A. Hyperkalemia
B. Hypokalemia
C. Hypermagnesemia
D. Hypernatremia
Correct Answer: B. Hypokalemia.
Rationale: Furosemide is a loop diuretic that increases urinary potassium excretion and can
cause hypokalemia.
10. A client taking a medication reports difficulty breathing and swelling of the lips. What
should the nurse do first?
A. Administer the next scheduled dose
B. Encourage oral fluids
C. Treat the reaction as a possible severe allergic response
D. Ask the client to rest for 30 min
Correct Answer: C. Treat the reaction as a possible severe allergic response.
Rationale: Difficulty breathing and facial or lip swelling can indicate a severe hypersensitivity
reaction requiring immediate intervention.
11. Which medication is classified as a beta-adrenergic blocker?
A. Metoprolol
B. Lisinopril
C. Furosemide
D. Losartan
Correct Answer: A. Metoprolol.
Rationale: Metoprolol is a beta-blocker that decreases heart rate, myocardial contractility, and
blood pressure.
