NCLEX-RN
Gastrointestinal Pharmacology Practice
Questions
20 Original NGN & ATI-Style MCQs with
Rationales
Question 1
Clinical Scenario
A 58-year-old man is admitted with a history of
gastroesophageal reflux disease (GERD). He reports frequent
nighttime heartburn despite taking over-the-counter antacids
several times daily. His medical history includes osteoporosis
and chronic kidney disease (CKD) stage 3. The healthcare
provider prescribes pantoprazole 40 mg orally once daily. Vital
signs are stable, serum creatinine is 1.8 mg/dL, and calcium is
within the normal range.
Question Stem
,Which instruction should the nurse include when teaching the
client about pantoprazole therapy?
A. Take the medication 30–60 minutes before breakfast.
B. Crush the tablet and mix it with applesauce if swallowing is
difficult.
C. Stop taking the medication as soon as heartburn improves.
D. Take the medication with an antacid at the same time for
maximum effectiveness.
Correct Answer
Correct Answer: A. Take the medication 30–60 minutes before
breakfast.
Detailed Rationale
Pantoprazole is a proton pump inhibitor (PPI) that irreversibly
inhibits the gastric H⁺/K⁺-ATPase pump in parietal cells,
producing profound suppression of gastric acid secretion. PPIs
are most effective when taken 30–60 minutes before the first
meal of the day because proton pumps become activated
during food intake. Administering the medication before
breakfast allows the drug to bind active pumps and maximize
acid suppression.
Option B is incorrect because delayed-release tablets should
generally not be crushed or chewed, as this destroys the
,protective coating designed to prevent degradation by gastric
acid.
Option C is incorrect because GERD often requires several
weeks of therapy, and abrupt discontinuation may result in
rebound acid hypersecretion or symptom recurrence.
Option D is incorrect because although antacids may
occasionally be used for breakthrough symptoms, they should
not routinely be taken simultaneously to "increase"
pantoprazole effectiveness. Pantoprazole works independently
by inhibiting proton pumps rather than neutralizing existing
acid.
Long-term PPI therapy has been associated with decreased
magnesium, vitamin B12 deficiency, fractures, and possible
kidney injury. Nurses should assess the ongoing need for
prolonged therapy and educate patients about using the lowest
effective dose.
Learning Objectives
After completing this question, the learner should be able to:
• Explain the proper administration of proton pump
inhibitors.
• Identify important patient teaching for GERD
pharmacotherapy.
, • Recognize long-term safety concerns associated with
prolonged PPI use.
Medication Safety Focus
Medication Administration
Question 2
Clinical Scenario
A 72-year-old woman is hospitalized with severe constipation
following hip replacement surgery. Her medications include
morphine, calcium supplements, and ferrous sulfate. The
provider prescribes lactulose 30 mL orally daily. Before
administering the medication, the nurse reviews the client's
laboratory results.
• Sodium: 138 mEq/L
• Potassium: 3.2 mEq/L
• Magnesium: 2.0 mg/dL
• Creatinine: 0.9 mg/dL
Question Stem
Which assessment finding should be the nurse's priority before
administering lactulose?
A. Mild abdominal bloating
Gastrointestinal Pharmacology Practice
Questions
20 Original NGN & ATI-Style MCQs with
Rationales
Question 1
Clinical Scenario
A 58-year-old man is admitted with a history of
gastroesophageal reflux disease (GERD). He reports frequent
nighttime heartburn despite taking over-the-counter antacids
several times daily. His medical history includes osteoporosis
and chronic kidney disease (CKD) stage 3. The healthcare
provider prescribes pantoprazole 40 mg orally once daily. Vital
signs are stable, serum creatinine is 1.8 mg/dL, and calcium is
within the normal range.
Question Stem
,Which instruction should the nurse include when teaching the
client about pantoprazole therapy?
A. Take the medication 30–60 minutes before breakfast.
B. Crush the tablet and mix it with applesauce if swallowing is
difficult.
C. Stop taking the medication as soon as heartburn improves.
D. Take the medication with an antacid at the same time for
maximum effectiveness.
Correct Answer
Correct Answer: A. Take the medication 30–60 minutes before
breakfast.
Detailed Rationale
Pantoprazole is a proton pump inhibitor (PPI) that irreversibly
inhibits the gastric H⁺/K⁺-ATPase pump in parietal cells,
producing profound suppression of gastric acid secretion. PPIs
are most effective when taken 30–60 minutes before the first
meal of the day because proton pumps become activated
during food intake. Administering the medication before
breakfast allows the drug to bind active pumps and maximize
acid suppression.
Option B is incorrect because delayed-release tablets should
generally not be crushed or chewed, as this destroys the
,protective coating designed to prevent degradation by gastric
acid.
Option C is incorrect because GERD often requires several
weeks of therapy, and abrupt discontinuation may result in
rebound acid hypersecretion or symptom recurrence.
Option D is incorrect because although antacids may
occasionally be used for breakthrough symptoms, they should
not routinely be taken simultaneously to "increase"
pantoprazole effectiveness. Pantoprazole works independently
by inhibiting proton pumps rather than neutralizing existing
acid.
Long-term PPI therapy has been associated with decreased
magnesium, vitamin B12 deficiency, fractures, and possible
kidney injury. Nurses should assess the ongoing need for
prolonged therapy and educate patients about using the lowest
effective dose.
Learning Objectives
After completing this question, the learner should be able to:
• Explain the proper administration of proton pump
inhibitors.
• Identify important patient teaching for GERD
pharmacotherapy.
, • Recognize long-term safety concerns associated with
prolonged PPI use.
Medication Safety Focus
Medication Administration
Question 2
Clinical Scenario
A 72-year-old woman is hospitalized with severe constipation
following hip replacement surgery. Her medications include
morphine, calcium supplements, and ferrous sulfate. The
provider prescribes lactulose 30 mL orally daily. Before
administering the medication, the nurse reviews the client's
laboratory results.
• Sodium: 138 mEq/L
• Potassium: 3.2 mEq/L
• Magnesium: 2.0 mg/dL
• Creatinine: 0.9 mg/dL
Question Stem
Which assessment finding should be the nurse's priority before
administering lactulose?
A. Mild abdominal bloating
