NCLEX-RN Gastrointestinal
Pharmacology Practice Questions |
20 Original NGN MCQs with Rationales
| ATI-Style Nursing Exam Prep
Question 1
Clinical Scenario
A 58-year-old man is admitted with a history of
gastroesophageal reflux disease (GERD). He reports frequent
heartburn despite taking over-the-counter antacids. The
provider prescribes pantoprazole 40 mg orally once daily. The
client also takes ferrous sulfate for iron-deficiency anemia and
calcium carbonate as needed. Vital signs are stable, and
laboratory values are within normal limits.
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. Take the medication only when heartburn occurs.
D. Take pantoprazole at bedtime with calcium carbonate.
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 proton pump (H+/K+-ATPase), suppressing
gastric acid secretion. It is most effective when taken 30–60
minutes before the first meal of the day, allowing the
medication to inhibit actively functioning proton pumps
stimulated by food intake. This timing maximizes therapeutic
benefit and promotes healing of esophagitis and symptom
relief.
Option B is incorrect because delayed-release pantoprazole
tablets should not be crushed or chewed, as doing so destroys
the enteric coating and decreases effectiveness.
Option C is incorrect because PPIs are maintenance medications
rather than "as-needed" drugs. They require consistent
administration for optimal acid suppression.
Option D is incorrect because taking pantoprazole with calcium
carbonate does not improve efficacy. Long-term PPI use may
actually reduce calcium absorption, increasing fracture risk,
,particularly in older adults. The nurse should also educate the
client about potential long-term adverse effects, including
hypomagnesemia, vitamin B12 deficiency, osteoporosis-related
fractures, and increased risk of Clostridioides difficile infection.
Periodic reassessment is recommended to ensure the lowest
effective dose is used.
Learning Objectives
After completing this question, the learner should be able to:
• Explain the correct administration timing for proton pump
inhibitors.
• Describe the mechanism of action of pantoprazole.
• Identify important long-term safety considerations of PPIs.
• Educate patients regarding appropriate medication
administration.
Medication Safety Focus
Medication Administration
Question 2
Clinical Scenario
A 72-year-old woman is hospitalized for hepatic encephalopathy
related to cirrhosis. She is receiving lactulose 30 mL orally three
, times daily. During morning assessment, the nurse notes the
client has had five loose stools during the previous 12 hours.
She is alert, oriented, and reports mild abdominal cramping.
Question Stem
What is the nurse's priority action?
A. Hold the lactulose and notify the provider about excessive
stools.
B. Administer an antidiarrheal medication.
C. Encourage the client to drink prune juice.
D. Increase the lactulose dose to prevent ammonia
accumulation.
Correct Answer
Correct Answer: A. Hold the lactulose and notify the provider
about excessive stools.
Detailed Rationale
Lactulose lowers serum ammonia by acidifying the colon and
promoting conversion of ammonia (NH₃) into ammonium
(NH₄⁺), which is excreted in stool. The therapeutic goal is
generally 2–3 soft bowel movements per day. Five loose stools
within 12 hours suggest excessive dosing, increasing the risk of
dehydration, electrolyte imbalance, hypotension, and acute
kidney injury.
Pharmacology Practice Questions |
20 Original NGN MCQs with Rationales
| ATI-Style Nursing Exam Prep
Question 1
Clinical Scenario
A 58-year-old man is admitted with a history of
gastroesophageal reflux disease (GERD). He reports frequent
heartburn despite taking over-the-counter antacids. The
provider prescribes pantoprazole 40 mg orally once daily. The
client also takes ferrous sulfate for iron-deficiency anemia and
calcium carbonate as needed. Vital signs are stable, and
laboratory values are within normal limits.
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. Take the medication only when heartburn occurs.
D. Take pantoprazole at bedtime with calcium carbonate.
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 proton pump (H+/K+-ATPase), suppressing
gastric acid secretion. It is most effective when taken 30–60
minutes before the first meal of the day, allowing the
medication to inhibit actively functioning proton pumps
stimulated by food intake. This timing maximizes therapeutic
benefit and promotes healing of esophagitis and symptom
relief.
Option B is incorrect because delayed-release pantoprazole
tablets should not be crushed or chewed, as doing so destroys
the enteric coating and decreases effectiveness.
Option C is incorrect because PPIs are maintenance medications
rather than "as-needed" drugs. They require consistent
administration for optimal acid suppression.
Option D is incorrect because taking pantoprazole with calcium
carbonate does not improve efficacy. Long-term PPI use may
actually reduce calcium absorption, increasing fracture risk,
,particularly in older adults. The nurse should also educate the
client about potential long-term adverse effects, including
hypomagnesemia, vitamin B12 deficiency, osteoporosis-related
fractures, and increased risk of Clostridioides difficile infection.
Periodic reassessment is recommended to ensure the lowest
effective dose is used.
Learning Objectives
After completing this question, the learner should be able to:
• Explain the correct administration timing for proton pump
inhibitors.
• Describe the mechanism of action of pantoprazole.
• Identify important long-term safety considerations of PPIs.
• Educate patients regarding appropriate medication
administration.
Medication Safety Focus
Medication Administration
Question 2
Clinical Scenario
A 72-year-old woman is hospitalized for hepatic encephalopathy
related to cirrhosis. She is receiving lactulose 30 mL orally three
, times daily. During morning assessment, the nurse notes the
client has had five loose stools during the previous 12 hours.
She is alert, oriented, and reports mild abdominal cramping.
Question Stem
What is the nurse's priority action?
A. Hold the lactulose and notify the provider about excessive
stools.
B. Administer an antidiarrheal medication.
C. Encourage the client to drink prune juice.
D. Increase the lactulose dose to prevent ammonia
accumulation.
Correct Answer
Correct Answer: A. Hold the lactulose and notify the provider
about excessive stools.
Detailed Rationale
Lactulose lowers serum ammonia by acidifying the colon and
promoting conversion of ammonia (NH₃) into ammonium
(NH₄⁺), which is excreted in stool. The therapeutic goal is
generally 2–3 soft bowel movements per day. Five loose stools
within 12 hours suggest excessive dosing, increasing the risk of
dehydration, electrolyte imbalance, hypotension, and acute
kidney injury.
