NCLEX-RN Pharmacology Gastrointestinal
System Practice Questions |
20 Original ATI & NGN Style MCQs with
Detailed Rationales
Question 1
Clinical Scenario
A 58-year-old male with liver cirrhosis and hepatic encephalopathy
is admitted to the medical unit. His admission laboratory results
show a serum ammonia level of 112 mcg/dL. The healthcare
provider prescribes lactulose 30 mL PO four times daily.
Question Stem
Which finding indicates the medication is achieving its desired
therapeutic effect?
Options
A. The patient has 2 to 3 soft stools per day.
B. The patient reports an absence of abdominal pain.
C. The patient’s urine output is greater than 30 mL/hr.
D. The patient demonstrates a noticeable decrease in ascites.
Correct Answer
Correct Answer: A. The patient has 2 to 3 soft stools per day.
,Detailed Rationale
Lactulose is a hyperosmotic laxative that works by acidifying the
gastrointestinal tract. This acidic environment converts absorbable
ammonia (NH3) into non-absorbable ammonium (NH4+), trapping it
in the gut for fecal excretion. The primary therapeutic goal in
managing hepatic encephalopathy is to achieve 2 to 3 soft stools
per day, which directly indicates adequate ammonia clearance and
therapeutic efficacy. Option B is incorrect because while abdominal
pain should be monitored, its absence does not confirm the
medication's efficacy in lowering ammonia levels. Option C is
incorrect because urine output monitors renal perfusion and
hydration status, not the specific efficacy of lactulose. Option D is
incorrect because lactulose does not directly reduce ascites;
diuretics such as spironolactone or furosemide are indicated for
that purpose. Nursing considerations include monitoring bowel
sounds, hydration status, and serum electrolytes, particularly
potassium, as excessive diarrhea can cause hypokalemia. Patient
teaching should emphasize that the medication may cause
flatulence and belching initially, which usually subsides with
continued use.
Learning Objective
After completing this question, the learner should be able to:
• Identify the expected therapeutic outcome of lactulose therapy.
• Explain the mechanism of action of lactulose in hepatic
encephalopathy.
• Recognize the importance of monitoring electrolytes during
laxative therapy.
,Medication Safety Focus
Monitoring therapeutic response and preventing
dehydration/electrolyte imbalance.
Question 2
Clinical Scenario
A 14-year-old female with cystic fibrosis and pancreatic
insufficiency is being discharged home. The healthcare provider
prescribes pancrelipase 5,000 units PO with each meal and snack.
Question Stem
Which instruction should the nurse include in the patient teaching
regarding pancrelipase administration?
Options
A. Take the medication on an empty stomach 1 hour before meals.
B. Crush the capsules and mix the contents with warm applesauce.
C. Take the medication with meals or snacks.
D. Store the medication in the refrigerator to maintain potency.
Correct Answer
Correct Answer: C. Take the medication with meals or snacks.
Detailed Rationale
Pancrelipase is a pancreatic enzyme replacement therapy
containing lipase, protease, and amylase. For optimal efficacy, it
must be administered with meals or snacks so that the enzymes can
mix directly with food in the gastrointestinal tract, facilitating proper
digestion and absorption of nutrients. Option A is incorrect because
taking the medication on an empty stomach renders it ineffective,
, as there is no food present to digest. Option B is incorrect because
pancrelipase capsules contain enteric-coated microspheres
designed to survive stomach acid; crushing or chewing them
destroys the coating, leading to enzyme inactivation and potential
oral mucosal irritation. Option D is incorrect because pancrelipase
should be stored at room temperature in a dry place; refrigeration
can introduce moisture, causing the microspheres to clump and
lose efficacy. Nursing assessment should include monitoring weight
gain, stool characteristics (e.g., reduction in steatorrhea), and
nutritional status.
Learning Objective
After completing this question, the learner should be able to:
• Describe the correct administration technique for pancreatic
enzyme replacements.
• Identify factors that inactivate pancreatic enzymes.
• Educate patients and caregivers on proper medication storage and
timing.
Medication Safety Focus
Medication administration and preserving drug integrity (enteric
coating).
Question 3
Clinical Scenario
A 45-year-old male is preparing for an international trip and is
prescribed bismuth subsalicylate for the prevention and treatment
of traveler’s diarrhea.
System Practice Questions |
20 Original ATI & NGN Style MCQs with
Detailed Rationales
Question 1
Clinical Scenario
A 58-year-old male with liver cirrhosis and hepatic encephalopathy
is admitted to the medical unit. His admission laboratory results
show a serum ammonia level of 112 mcg/dL. The healthcare
provider prescribes lactulose 30 mL PO four times daily.
Question Stem
Which finding indicates the medication is achieving its desired
therapeutic effect?
Options
A. The patient has 2 to 3 soft stools per day.
B. The patient reports an absence of abdominal pain.
C. The patient’s urine output is greater than 30 mL/hr.
D. The patient demonstrates a noticeable decrease in ascites.
Correct Answer
Correct Answer: A. The patient has 2 to 3 soft stools per day.
,Detailed Rationale
Lactulose is a hyperosmotic laxative that works by acidifying the
gastrointestinal tract. This acidic environment converts absorbable
ammonia (NH3) into non-absorbable ammonium (NH4+), trapping it
in the gut for fecal excretion. The primary therapeutic goal in
managing hepatic encephalopathy is to achieve 2 to 3 soft stools
per day, which directly indicates adequate ammonia clearance and
therapeutic efficacy. Option B is incorrect because while abdominal
pain should be monitored, its absence does not confirm the
medication's efficacy in lowering ammonia levels. Option C is
incorrect because urine output monitors renal perfusion and
hydration status, not the specific efficacy of lactulose. Option D is
incorrect because lactulose does not directly reduce ascites;
diuretics such as spironolactone or furosemide are indicated for
that purpose. Nursing considerations include monitoring bowel
sounds, hydration status, and serum electrolytes, particularly
potassium, as excessive diarrhea can cause hypokalemia. Patient
teaching should emphasize that the medication may cause
flatulence and belching initially, which usually subsides with
continued use.
Learning Objective
After completing this question, the learner should be able to:
• Identify the expected therapeutic outcome of lactulose therapy.
• Explain the mechanism of action of lactulose in hepatic
encephalopathy.
• Recognize the importance of monitoring electrolytes during
laxative therapy.
,Medication Safety Focus
Monitoring therapeutic response and preventing
dehydration/electrolyte imbalance.
Question 2
Clinical Scenario
A 14-year-old female with cystic fibrosis and pancreatic
insufficiency is being discharged home. The healthcare provider
prescribes pancrelipase 5,000 units PO with each meal and snack.
Question Stem
Which instruction should the nurse include in the patient teaching
regarding pancrelipase administration?
Options
A. Take the medication on an empty stomach 1 hour before meals.
B. Crush the capsules and mix the contents with warm applesauce.
C. Take the medication with meals or snacks.
D. Store the medication in the refrigerator to maintain potency.
Correct Answer
Correct Answer: C. Take the medication with meals or snacks.
Detailed Rationale
Pancrelipase is a pancreatic enzyme replacement therapy
containing lipase, protease, and amylase. For optimal efficacy, it
must be administered with meals or snacks so that the enzymes can
mix directly with food in the gastrointestinal tract, facilitating proper
digestion and absorption of nutrients. Option A is incorrect because
taking the medication on an empty stomach renders it ineffective,
, as there is no food present to digest. Option B is incorrect because
pancrelipase capsules contain enteric-coated microspheres
designed to survive stomach acid; crushing or chewing them
destroys the coating, leading to enzyme inactivation and potential
oral mucosal irritation. Option D is incorrect because pancrelipase
should be stored at room temperature in a dry place; refrigeration
can introduce moisture, causing the microspheres to clump and
lose efficacy. Nursing assessment should include monitoring weight
gain, stool characteristics (e.g., reduction in steatorrhea), and
nutritional status.
Learning Objective
After completing this question, the learner should be able to:
• Describe the correct administration technique for pancreatic
enzyme replacements.
• Identify factors that inactivate pancreatic enzymes.
• Educate patients and caregivers on proper medication storage and
timing.
Medication Safety Focus
Medication administration and preserving drug integrity (enteric
coating).
Question 3
Clinical Scenario
A 45-year-old male is preparing for an international trip and is
prescribed bismuth subsalicylate for the prevention and treatment
of traveler’s diarrhea.
