NCLEX-RN Gastrointestinal
Pharmacology Practice Exam
20 Original NGN-Style MCQs with
Detailed Rationales
Nursing Pharmacology Study Guide
Question 1
Clinical Scenario
A 62-year-old man with a history of gastroesophageal reflux
disease (GERD) and hypertension is admitted for persistent
epigastric discomfort. The provider prescribes pantoprazole 40
mg IV once daily. Current medications include lisinopril and
calcium carbonate as needed for heartburn. Vital signs are
stable, and laboratory values are within normal limits.
Question Stem
Which instruction should the nurse provide to maximize the
therapeutic effectiveness of pantoprazole after the client
transitions to oral therapy?
A. Take the medication immediately after each meal.
,B. Take the medication approximately 30–60 minutes before
breakfast.
C. Crush the delayed-release tablet and mix it with applesauce.
D. Take the medication only when heartburn symptoms occur.
Correct Answer
B. Take the medication approximately 30–60 minutes before
breakfast.
Detailed Rationale
Pantoprazole is a proton pump inhibitor (PPI) that irreversibly
inhibits the hydrogen-potassium ATPase pump in gastric parietal
cells, reducing gastric acid secretion. PPIs are most effective
when taken 30–60 minutes before the first meal of the day,
allowing peak drug concentrations to coincide with maximal
proton pump activation during food stimulation. This timing
improves acid suppression and promotes healing of erosive
esophagitis and peptic ulcers.
Option A is incorrect because administering the medication
after meals decreases its effectiveness. Option C is incorrect
because delayed-release tablets should not be crushed,
chewed, or split, as doing so destroys the protective coating and
reduces drug efficacy. Option D is incorrect because PPIs are
designed for scheduled use rather than as-needed symptom
relief.
,The nurse should also teach patients that symptom
improvement may require several days, long-term therapy may
increase the risk of osteoporosis-related fractures,
hypomagnesemia, vitamin B12 deficiency, and Clostridioides
difficile infection, and they should report persistent diarrhea or
signs of gastrointestinal bleeding.
Learning Objectives
After completing this question, the learner should be able to:
• Explain the proper administration timing of proton pump
inhibitors.
• Identify patient teaching points for pantoprazole therapy.
• Recognize long-term safety concerns associated with PPIs.
Medication Safety Focus
Medication Administration
Question 2
Clinical Scenario
A 70-year-old woman with chronic kidney disease (eGFR 24
mL/min/1.73 m²) reports frequent heartburn. She asks the
nurse which over-the-counter medication is safest. Current
medications include amlodipine and aspirin.
, Question Stem
Which medication should the nurse advise the client to avoid
because of her renal impairment?
A. Calcium carbonate
B. Magnesium hydroxide
C. Famotidine
D. Sucralfate
Correct Answer
B. Magnesium hydroxide
Detailed Rationale
Magnesium-containing antacids should generally be avoided in
clients with significant renal impairment because the kidneys
cannot effectively eliminate magnesium. Accumulation may
result in hypermagnesemia, producing muscle weakness,
diminished deep tendon reflexes, hypotension, lethargy,
respiratory depression, and potentially life-threatening cardiac
dysrhythmias.
Option A, calcium carbonate, may be appropriate for some
patients but should be used cautiously because excessive intake
can contribute to hypercalcemia and constipation. Option C,
famotidine, is often a safer alternative, although dosage
adjustments are necessary in renal impairment. Option D,
Pharmacology Practice Exam
20 Original NGN-Style MCQs with
Detailed Rationales
Nursing Pharmacology Study Guide
Question 1
Clinical Scenario
A 62-year-old man with a history of gastroesophageal reflux
disease (GERD) and hypertension is admitted for persistent
epigastric discomfort. The provider prescribes pantoprazole 40
mg IV once daily. Current medications include lisinopril and
calcium carbonate as needed for heartburn. Vital signs are
stable, and laboratory values are within normal limits.
Question Stem
Which instruction should the nurse provide to maximize the
therapeutic effectiveness of pantoprazole after the client
transitions to oral therapy?
A. Take the medication immediately after each meal.
,B. Take the medication approximately 30–60 minutes before
breakfast.
C. Crush the delayed-release tablet and mix it with applesauce.
D. Take the medication only when heartburn symptoms occur.
Correct Answer
B. Take the medication approximately 30–60 minutes before
breakfast.
Detailed Rationale
Pantoprazole is a proton pump inhibitor (PPI) that irreversibly
inhibits the hydrogen-potassium ATPase pump in gastric parietal
cells, reducing gastric acid secretion. PPIs are most effective
when taken 30–60 minutes before the first meal of the day,
allowing peak drug concentrations to coincide with maximal
proton pump activation during food stimulation. This timing
improves acid suppression and promotes healing of erosive
esophagitis and peptic ulcers.
Option A is incorrect because administering the medication
after meals decreases its effectiveness. Option C is incorrect
because delayed-release tablets should not be crushed,
chewed, or split, as doing so destroys the protective coating and
reduces drug efficacy. Option D is incorrect because PPIs are
designed for scheduled use rather than as-needed symptom
relief.
,The nurse should also teach patients that symptom
improvement may require several days, long-term therapy may
increase the risk of osteoporosis-related fractures,
hypomagnesemia, vitamin B12 deficiency, and Clostridioides
difficile infection, and they should report persistent diarrhea or
signs of gastrointestinal bleeding.
Learning Objectives
After completing this question, the learner should be able to:
• Explain the proper administration timing of proton pump
inhibitors.
• Identify patient teaching points for pantoprazole therapy.
• Recognize long-term safety concerns associated with PPIs.
Medication Safety Focus
Medication Administration
Question 2
Clinical Scenario
A 70-year-old woman with chronic kidney disease (eGFR 24
mL/min/1.73 m²) reports frequent heartburn. She asks the
nurse which over-the-counter medication is safest. Current
medications include amlodipine and aspirin.
, Question Stem
Which medication should the nurse advise the client to avoid
because of her renal impairment?
A. Calcium carbonate
B. Magnesium hydroxide
C. Famotidine
D. Sucralfate
Correct Answer
B. Magnesium hydroxide
Detailed Rationale
Magnesium-containing antacids should generally be avoided in
clients with significant renal impairment because the kidneys
cannot effectively eliminate magnesium. Accumulation may
result in hypermagnesemia, producing muscle weakness,
diminished deep tendon reflexes, hypotension, lethargy,
respiratory depression, and potentially life-threatening cardiac
dysrhythmias.
Option A, calcium carbonate, may be appropriate for some
patients but should be used cautiously because excessive intake
can contribute to hypercalcemia and constipation. Option C,
famotidine, is often a safer alternative, although dosage
adjustments are necessary in renal impairment. Option D,
