ATI PN Pharmacology Proctored Exam 2026
| Updated 100 Questions & Answers |
Practical Nursing Pharmacology Study
Guide with Verified Solutions & Rationales
ATI PN PHARMACOLOGY PROCTORED EXAM 2026 – STUDY GUIDE WITH
VERIFIED SOLUTIONS
• This comprehensive study guide contains 100 original practice questions
covering all essential pharmacology topics for practical nursing, including
drug classifications, mechanisms of action, dosage calculations, adverse
effects, contraindications, drug interactions, and nursing implications.
• Use this material for self-paced review by working through questions
systematically, analyzing detailed EXPERT RATIONALE, and identifying
knowledge gaps to focus your final exam preparation.
1. A nurse is preparing to administer digoxin to a client with heart failure.
Which assessment finding would require the nurse to withhold the
medication and notify the provider?
A. Heart rate of 78 beats/min
B. Blood pressure of 118/76 mmHg
C. Heart rate of 52 beats/min
D. Respiratory rate of 18 breaths/min
E. Potassium level of 4.2 mEq/L
CORRECT ANSWER: C. Heart rate of 52 beats/min
EXPERT RATIONALE: Digoxin slows the heart rate and increases the force of
cardiac contraction. A heart rate below 60 beats/min in an adult indicates
bradycardia, which is a sign of digoxin toxicity. The nurse should withhold the dose
and notify the provider immediately before administration. A normal heart rate for
an adult is 60-100 beats/min.
,2. A client is prescribed furosemide for fluid overload due to heart failure.
Which laboratory value should the nurse monitor closely due to the risk of
adverse effect?
A. Sodium level
B. Calcium level
C. Potassium level
D. Glucose level
E. Magnesium level
CORRECT ANSWER: C. Potassium level
EXPERT RATIONALE: Furosemide is a loop diuretic that causes significant
potassium loss through increased urinary excretion. Hypokalemia can lead to
dangerous cardiac dysrhythmias, muscle weakness, and fatigue. This risk is
especially critical in clients also taking digoxin, so potassium levels must be
monitored closely and the client may need supplementation.
3. A nurse is teaching a client about taking levothyroxine for hypothyroidism.
Which instruction should the nurse include?
A. Take the medication with food to reduce stomach upset
B. Take the medication at bedtime
C. Take the medication on an empty stomach in the morning
D. Take the medication with a calcium supplement
E. Take the medication every other day
CORRECT ANSWER: C. Take the medication on an empty stomach in the
morning
EXPERT RATIONALE: Levothyroxine should be taken on an empty stomach,
typically 30 to 60 minutes before breakfast, to maximize absorption. Food, calcium
supplements, and iron supplements can interfere with absorption and should be
,separated by several hours. This ensures optimal therapeutic effect and consistent
hormone levels.
4. A client receiving heparin therapy has a sudden increase in bleeding. Which
medication should the nurse anticipate administering as the antidote?
A. Vitamin K
B. Protamine sulfate
C. Folic acid
D. Calcium gluconate
E. Naloxone
CORRECT ANSWER: B. Protamine sulfate
EXPERT RATIONALE: Protamine sulfate is the specific antidote for heparin
overdose and toxicity. It binds with heparin to form a stable complex, immediately
neutralizing its anticoagulant effect. Vitamin K is the antidote for warfarin, naloxone
for opioids, and calcium gluconate for hyperkalemia or calcium channel blocker
overdose.
5. A nurse is caring for a client taking warfarin for atrial fibrillation. Which
finding indicates the client may be experiencing a therapeutic effect of the
medication?
A. INR of 1.0
B. INR of 2.5
C. PT of 10 seconds
D. Platelet count of 450,000/mm³
E. Hemoglobin of 16 g/dL
CORRECT ANSWER: B. INR of 2.5
, EXPERT RATIONALE: A therapeutic INR range for clients on warfarin is typically 2.0
to 3.0 for most indications, including atrial fibrillation and mechanical heart valves.
An INR of 1.0 represents normal clotting without anticoagulation, indicating the
medication is not therapeutic. An INR above 4.0 indicates excessive anticoagulation
with bleeding risk.
6. A client is prescribed metformin for type 2 diabetes mellitus. The nurse
should instruct the client to notify the provider immediately if which
symptom occurs?
A. Mild nausea and vomiting
B. Metallic taste in the mouth
C. Muscle pain and weakness
D. Decreased appetite
E. Diarrhea
CORRECT ANSWER: C. Muscle pain and weakness
EXPERT RATIONALE: Muscle pain and weakness can indicate lactic acidosis, a rare
but life-threatening complication of metformin therapy. This metabolic emergency
requires immediate medical attention and discontinuation of the medication. The
other symptoms are common and typically transient and resolve with continued
use or taking the medication with food.
7. A nurse is administering insulin glargine to a client with type 1 diabetes.
Which statement by the nurse is most accurate regarding this medication?
A. This insulin should be mixed with regular insulin in the same syringe
B. This insulin has a peak action time of 4 to 6 hours
C. This insulin provides a steady release with no pronounced peak
D. This insulin should be administered only intravenously
| Updated 100 Questions & Answers |
Practical Nursing Pharmacology Study
Guide with Verified Solutions & Rationales
ATI PN PHARMACOLOGY PROCTORED EXAM 2026 – STUDY GUIDE WITH
VERIFIED SOLUTIONS
• This comprehensive study guide contains 100 original practice questions
covering all essential pharmacology topics for practical nursing, including
drug classifications, mechanisms of action, dosage calculations, adverse
effects, contraindications, drug interactions, and nursing implications.
• Use this material for self-paced review by working through questions
systematically, analyzing detailed EXPERT RATIONALE, and identifying
knowledge gaps to focus your final exam preparation.
1. A nurse is preparing to administer digoxin to a client with heart failure.
Which assessment finding would require the nurse to withhold the
medication and notify the provider?
A. Heart rate of 78 beats/min
B. Blood pressure of 118/76 mmHg
C. Heart rate of 52 beats/min
D. Respiratory rate of 18 breaths/min
E. Potassium level of 4.2 mEq/L
CORRECT ANSWER: C. Heart rate of 52 beats/min
EXPERT RATIONALE: Digoxin slows the heart rate and increases the force of
cardiac contraction. A heart rate below 60 beats/min in an adult indicates
bradycardia, which is a sign of digoxin toxicity. The nurse should withhold the dose
and notify the provider immediately before administration. A normal heart rate for
an adult is 60-100 beats/min.
,2. A client is prescribed furosemide for fluid overload due to heart failure.
Which laboratory value should the nurse monitor closely due to the risk of
adverse effect?
A. Sodium level
B. Calcium level
C. Potassium level
D. Glucose level
E. Magnesium level
CORRECT ANSWER: C. Potassium level
EXPERT RATIONALE: Furosemide is a loop diuretic that causes significant
potassium loss through increased urinary excretion. Hypokalemia can lead to
dangerous cardiac dysrhythmias, muscle weakness, and fatigue. This risk is
especially critical in clients also taking digoxin, so potassium levels must be
monitored closely and the client may need supplementation.
3. A nurse is teaching a client about taking levothyroxine for hypothyroidism.
Which instruction should the nurse include?
A. Take the medication with food to reduce stomach upset
B. Take the medication at bedtime
C. Take the medication on an empty stomach in the morning
D. Take the medication with a calcium supplement
E. Take the medication every other day
CORRECT ANSWER: C. Take the medication on an empty stomach in the
morning
EXPERT RATIONALE: Levothyroxine should be taken on an empty stomach,
typically 30 to 60 minutes before breakfast, to maximize absorption. Food, calcium
supplements, and iron supplements can interfere with absorption and should be
,separated by several hours. This ensures optimal therapeutic effect and consistent
hormone levels.
4. A client receiving heparin therapy has a sudden increase in bleeding. Which
medication should the nurse anticipate administering as the antidote?
A. Vitamin K
B. Protamine sulfate
C. Folic acid
D. Calcium gluconate
E. Naloxone
CORRECT ANSWER: B. Protamine sulfate
EXPERT RATIONALE: Protamine sulfate is the specific antidote for heparin
overdose and toxicity. It binds with heparin to form a stable complex, immediately
neutralizing its anticoagulant effect. Vitamin K is the antidote for warfarin, naloxone
for opioids, and calcium gluconate for hyperkalemia or calcium channel blocker
overdose.
5. A nurse is caring for a client taking warfarin for atrial fibrillation. Which
finding indicates the client may be experiencing a therapeutic effect of the
medication?
A. INR of 1.0
B. INR of 2.5
C. PT of 10 seconds
D. Platelet count of 450,000/mm³
E. Hemoglobin of 16 g/dL
CORRECT ANSWER: B. INR of 2.5
, EXPERT RATIONALE: A therapeutic INR range for clients on warfarin is typically 2.0
to 3.0 for most indications, including atrial fibrillation and mechanical heart valves.
An INR of 1.0 represents normal clotting without anticoagulation, indicating the
medication is not therapeutic. An INR above 4.0 indicates excessive anticoagulation
with bleeding risk.
6. A client is prescribed metformin for type 2 diabetes mellitus. The nurse
should instruct the client to notify the provider immediately if which
symptom occurs?
A. Mild nausea and vomiting
B. Metallic taste in the mouth
C. Muscle pain and weakness
D. Decreased appetite
E. Diarrhea
CORRECT ANSWER: C. Muscle pain and weakness
EXPERT RATIONALE: Muscle pain and weakness can indicate lactic acidosis, a rare
but life-threatening complication of metformin therapy. This metabolic emergency
requires immediate medical attention and discontinuation of the medication. The
other symptoms are common and typically transient and resolve with continued
use or taking the medication with food.
7. A nurse is administering insulin glargine to a client with type 1 diabetes.
Which statement by the nurse is most accurate regarding this medication?
A. This insulin should be mixed with regular insulin in the same syringe
B. This insulin has a peak action time of 4 to 6 hours
C. This insulin provides a steady release with no pronounced peak
D. This insulin should be administered only intravenously
