NCLEX-RN Pharmacology
Gastrointestinal System Practice
Questions
20 Original NGN-Style MCQs with
Rationales
ATI-Inspired Nursing Exam Prep
Question 1
Clinical Scenario
A 58-year-old man is admitted with a diagnosis of bleeding
gastric ulcer. His medical history includes osteoarthritis,
hypertension, and chronic use of ibuprofen for knee pain. The
provider prescribes pantoprazole 40 mg IV daily. Vital signs are
BP 128/76 mm Hg, HR 84/min, RR 18/min, and temperature
98.7°F (37.1°C). Laboratory results include hemoglobin 9.8 g/dL
and hematocrit 29%.
Question Stem
Which therapeutic response indicates that pantoprazole is
achieving its intended effect?
,A. Decreased gastric acid secretion promoting ulcer healing
B. Increased gastric motility and faster gastric emptying
C. Neutralization of gastric acid already present in the stomach
D. Formation of a protective barrier over the ulcer without
affecting acid production
Correct Answer
Correct Answer: A. Decreased gastric acid secretion promoting
ulcer healing
Detailed Rationale
Pantoprazole is a proton pump inhibitor (PPI) that irreversibly
inhibits the hydrogen-potassium ATPase pump located in gastric
parietal cells. By blocking the final step of gastric acid secretion,
pantoprazole significantly reduces gastric acidity, allowing
damaged gastric mucosa to heal and reducing the risk of
recurrent gastrointestinal bleeding. In hospitalized patients with
bleeding peptic ulcers, PPIs are commonly prescribed to
stabilize clot formation and decrease the likelihood of
rebleeding.
Option B is incorrect because increased gastric motility is
associated with prokinetic agents such as metoclopramide, not
PPIs.
,Option C is incorrect because antacids, not PPIs, directly
neutralize acid already present in the stomach.
Option D is incorrect because sucralfate forms a protective
coating over ulcers but does not significantly inhibit gastric acid
production.
Nurses should monitor for improvement in abdominal pain,
reduction in gastrointestinal bleeding, and long-term adverse
effects such as hypomagnesemia, vitamin B12 deficiency,
osteoporosis-related fractures, and Clostridioides difficile
infection in patients receiving prolonged PPI therapy.
Learning Objectives
After completing this question, the learner should be able to:
• Explain the mechanism of action of proton pump
inhibitors.
• Identify expected therapeutic outcomes of pantoprazole
therapy.
• Differentiate PPIs from antacids and mucosal protectants.
• Monitor patients receiving long-term acid suppression
therapy.
Medication Safety Focus
Monitoring
, Question 2
Clinical Scenario
A 72-year-old woman with gastroesophageal reflux disease
(GERD) is prescribed omeprazole 20 mg orally every morning.
During discharge teaching, the nurse evaluates the patient's
understanding of medication administration.
Question Stem
Which statement by the patient indicates correct understanding
of omeprazole therapy?
A. "I will take this medication with my bedtime snack."
B. "I should take this medication before breakfast each
morning."
C. "I can crush the capsule if swallowing becomes difficult."
D. "I should stop taking it as soon as my heartburn improves."
Correct Answer
Correct Answer: B. "I should take this medication before
breakfast each morning."
Detailed Rationale
Omeprazole is most effective when administered 30 to 60
minutes before the first meal of the day. Food stimulates
proton pumps in parietal cells, allowing the medication to bind
Gastrointestinal System Practice
Questions
20 Original NGN-Style MCQs with
Rationales
ATI-Inspired Nursing Exam Prep
Question 1
Clinical Scenario
A 58-year-old man is admitted with a diagnosis of bleeding
gastric ulcer. His medical history includes osteoarthritis,
hypertension, and chronic use of ibuprofen for knee pain. The
provider prescribes pantoprazole 40 mg IV daily. Vital signs are
BP 128/76 mm Hg, HR 84/min, RR 18/min, and temperature
98.7°F (37.1°C). Laboratory results include hemoglobin 9.8 g/dL
and hematocrit 29%.
Question Stem
Which therapeutic response indicates that pantoprazole is
achieving its intended effect?
,A. Decreased gastric acid secretion promoting ulcer healing
B. Increased gastric motility and faster gastric emptying
C. Neutralization of gastric acid already present in the stomach
D. Formation of a protective barrier over the ulcer without
affecting acid production
Correct Answer
Correct Answer: A. Decreased gastric acid secretion promoting
ulcer healing
Detailed Rationale
Pantoprazole is a proton pump inhibitor (PPI) that irreversibly
inhibits the hydrogen-potassium ATPase pump located in gastric
parietal cells. By blocking the final step of gastric acid secretion,
pantoprazole significantly reduces gastric acidity, allowing
damaged gastric mucosa to heal and reducing the risk of
recurrent gastrointestinal bleeding. In hospitalized patients with
bleeding peptic ulcers, PPIs are commonly prescribed to
stabilize clot formation and decrease the likelihood of
rebleeding.
Option B is incorrect because increased gastric motility is
associated with prokinetic agents such as metoclopramide, not
PPIs.
,Option C is incorrect because antacids, not PPIs, directly
neutralize acid already present in the stomach.
Option D is incorrect because sucralfate forms a protective
coating over ulcers but does not significantly inhibit gastric acid
production.
Nurses should monitor for improvement in abdominal pain,
reduction in gastrointestinal bleeding, and long-term adverse
effects such as hypomagnesemia, vitamin B12 deficiency,
osteoporosis-related fractures, and Clostridioides difficile
infection in patients receiving prolonged PPI therapy.
Learning Objectives
After completing this question, the learner should be able to:
• Explain the mechanism of action of proton pump
inhibitors.
• Identify expected therapeutic outcomes of pantoprazole
therapy.
• Differentiate PPIs from antacids and mucosal protectants.
• Monitor patients receiving long-term acid suppression
therapy.
Medication Safety Focus
Monitoring
, Question 2
Clinical Scenario
A 72-year-old woman with gastroesophageal reflux disease
(GERD) is prescribed omeprazole 20 mg orally every morning.
During discharge teaching, the nurse evaluates the patient's
understanding of medication administration.
Question Stem
Which statement by the patient indicates correct understanding
of omeprazole therapy?
A. "I will take this medication with my bedtime snack."
B. "I should take this medication before breakfast each
morning."
C. "I can crush the capsule if swallowing becomes difficult."
D. "I should stop taking it as soon as my heartburn improves."
Correct Answer
Correct Answer: B. "I should take this medication before
breakfast each morning."
Detailed Rationale
Omeprazole is most effective when administered 30 to 60
minutes before the first meal of the day. Food stimulates
proton pumps in parietal cells, allowing the medication to bind
