NCLEX-RN Pharmacology
Gastrointestinal System Exam
20 Original NGN-Style MCQs with
Rationales
ATI-Inspired Nursing Practice Questions
Question 1
Clinical Scenario
A 58-year-old man with a history of gastroesophageal reflux
disease (GERD) is admitted for evaluation of persistent
heartburn. The provider prescribes pantoprazole 40 mg orally
once daily. The nurse prepares to administer the first dose.
Vital signs are stable, and the patient reports no difficulty
swallowing medications.
Question Stem
Which nursing action will maximize the therapeutic
effectiveness of pantoprazole?
A. Administer the medication 30–60 minutes before breakfast.
,B. Administer the medication immediately after breakfast.
C. Crush the tablet and mix it with applesauce.
D. Administer the medication only when symptoms occur.
Correct Answer
Correct Answer: A. Administer the medication 30–60 minutes
before breakfast.
Detailed Rationale
Pantoprazole is a proton pump inhibitor (PPI) that irreversibly
inhibits the gastric hydrogen-potassium ATPase pump in parietal
cells, thereby suppressing gastric acid secretion. PPIs are most
effective when taken 30–60 minutes before the first meal of
the day, when proton pumps become activated by food intake.
Administering the medication before breakfast ensures that the
highest concentration of the drug is present when acid
secretion begins, resulting in optimal acid suppression and
symptom relief.
Option B is incorrect because taking pantoprazole after a meal
delays activation and reduces therapeutic effectiveness. Option
C is incorrect because delayed-release tablets should generally
not be crushed, as doing so destroys the protective coating
designed to prevent degradation by stomach acid. Option D is
incorrect because pantoprazole is intended for scheduled
,therapy rather than as-needed symptom relief; intermittent use
reduces its effectiveness.
The nurse should also educate the patient that symptom
improvement may take several days despite the medication
beginning to suppress acid production after the first dose. Long-
term therapy requires monitoring for potential adverse effects
such as vitamin B12 deficiency, hypomagnesemia, osteoporosis-
related fractures, and Clostridioides difficile infection.
Learning Objectives
After completing this question, the learner should be able to:
• Identify the appropriate timing for proton pump inhibitor
administration.
• Explain the mechanism of action of pantoprazole.
• Educate patients regarding proper administration of PPIs.
• Recognize important monitoring parameters during long-
term PPI therapy.
Medication Safety Focus
Medication Administration
Question 2
Clinical Scenario
, A 72-year-old woman is hospitalized with nausea and vomiting
following abdominal surgery. The provider prescribes
ondansetron 4 mg IV every 6 hours as needed. Her history
includes heart failure, and she takes furosemide daily. Morning
laboratory results reveal:
• Potassium: 3.0 mEq/L
• Magnesium: 1.4 mg/dL
• Heart rate: 84/min
• Blood pressure: 128/76 mmHg
Question Stem
Which nursing action is the priority before administering
ondansetron?
A. Administer ondansetron as prescribed because nausea is the
priority.
B. Obtain an electrocardiogram and notify the provider of
electrolyte abnormalities.
C. Encourage the patient to drink ginger ale before giving the
medication.
D. Administer metoclopramide instead of ondansetron.
Correct Answer
Gastrointestinal System Exam
20 Original NGN-Style MCQs with
Rationales
ATI-Inspired Nursing Practice Questions
Question 1
Clinical Scenario
A 58-year-old man with a history of gastroesophageal reflux
disease (GERD) is admitted for evaluation of persistent
heartburn. The provider prescribes pantoprazole 40 mg orally
once daily. The nurse prepares to administer the first dose.
Vital signs are stable, and the patient reports no difficulty
swallowing medications.
Question Stem
Which nursing action will maximize the therapeutic
effectiveness of pantoprazole?
A. Administer the medication 30–60 minutes before breakfast.
,B. Administer the medication immediately after breakfast.
C. Crush the tablet and mix it with applesauce.
D. Administer the medication only when symptoms occur.
Correct Answer
Correct Answer: A. Administer the medication 30–60 minutes
before breakfast.
Detailed Rationale
Pantoprazole is a proton pump inhibitor (PPI) that irreversibly
inhibits the gastric hydrogen-potassium ATPase pump in parietal
cells, thereby suppressing gastric acid secretion. PPIs are most
effective when taken 30–60 minutes before the first meal of
the day, when proton pumps become activated by food intake.
Administering the medication before breakfast ensures that the
highest concentration of the drug is present when acid
secretion begins, resulting in optimal acid suppression and
symptom relief.
Option B is incorrect because taking pantoprazole after a meal
delays activation and reduces therapeutic effectiveness. Option
C is incorrect because delayed-release tablets should generally
not be crushed, as doing so destroys the protective coating
designed to prevent degradation by stomach acid. Option D is
incorrect because pantoprazole is intended for scheduled
,therapy rather than as-needed symptom relief; intermittent use
reduces its effectiveness.
The nurse should also educate the patient that symptom
improvement may take several days despite the medication
beginning to suppress acid production after the first dose. Long-
term therapy requires monitoring for potential adverse effects
such as vitamin B12 deficiency, hypomagnesemia, osteoporosis-
related fractures, and Clostridioides difficile infection.
Learning Objectives
After completing this question, the learner should be able to:
• Identify the appropriate timing for proton pump inhibitor
administration.
• Explain the mechanism of action of pantoprazole.
• Educate patients regarding proper administration of PPIs.
• Recognize important monitoring parameters during long-
term PPI therapy.
Medication Safety Focus
Medication Administration
Question 2
Clinical Scenario
, A 72-year-old woman is hospitalized with nausea and vomiting
following abdominal surgery. The provider prescribes
ondansetron 4 mg IV every 6 hours as needed. Her history
includes heart failure, and she takes furosemide daily. Morning
laboratory results reveal:
• Potassium: 3.0 mEq/L
• Magnesium: 1.4 mg/dL
• Heart rate: 84/min
• Blood pressure: 128/76 mmHg
Question Stem
Which nursing action is the priority before administering
ondansetron?
A. Administer ondansetron as prescribed because nausea is the
priority.
B. Obtain an electrocardiogram and notify the provider of
electrolyte abnormalities.
C. Encourage the patient to drink ginger ale before giving the
medication.
D. Administer metoclopramide instead of ondansetron.
Correct Answer
