West Coast University NURS 120 Week 4 Quiz (pdf) |
2026/2027 | Gastrointestinal Nursing Q&A | Nursing
1. Which of the following best describes the primary mechanism by which proton pump
inhibitors reduce gastric acid secretion?
A) Blocking histamine H2 receptors on parietal cells
B) Irreversibly inhibiting the hydrogen-potassium ATPase pump
C) Neutralizing existing acid in the stomach lumen
D) Coating the gastric mucosa with a protective barrier
Correct Answer: Irreversibly inhibiting the hydrogen-potassium ATPase pump
Rationale: Proton pump inhibitors work by irreversibly blocking the hydrogen-potassium ATPase
enzyme system in gastric parietal cells, which is the final common pathway for acid secretion. This
produces prolonged suppression of both basal and stimulated acid production. H2 receptor
antagonists work by a different mechanism, and antacids neutralize existing acid without reducing
secretion.
2. When are antacids most effective for treating gastroesophageal reflux symptoms?
A) Immediately before breakfast
B) One to three hours after eating
C) Only at bedtime
D) On an empty stomach
Correct Answer: One to three hours after eating
Rationale: Antacids are most effective when taken one to three hours after meals, when gastric acid
secretion is at its peak and the stomach is emptying. This timing allows the medication to neutralize
acid before it can reflux into the esophagus. Taking antacids on an empty stomach provides only brief
relief because they are rapidly emptied from the stomach.
3. A patient taking an antacid for GERD also takes other oral medications. How long should the
patient wait before taking other PO medications?
A) 30 minutes
B) 1 hour
C) 2 to 3 hours
D) No waiting period is required
Correct Answer: 2 to 3 hours
Rationale: Antacids can alter the absorption of many oral medications by changing gastric pH and
delaying gastric emptying. A separation interval of two to three hours is recommended to minimize
this interaction. This prevents reduced therapeutic effects of other medications such as antibiotics,
digoxin, and levothyroxine.
, 4. Which statement best describes gastritis?
A) Inflammation of the inner tissue lining of the stomach that compromises mucosal integrity
B) A malignant tumor of the gastric fundus
C) Complete absence of gastric acid production
D) Herniation of the stomach through the diaphragm
Correct Answer: Inflammation of the inner tissue lining of the stomach that compromises mucosal
integrity
Rationale: Gastritis is defined as inflammation of the gastric mucosa, which can be acute or chronic.
The inflammatory process disrupts the protective mucosal barrier, allowing acid and pepsin to
damage the stomach lining. This can lead to erosion, ulceration, and bleeding if not treated
appropriately.
5. A patient with peptic ulcer disease suddenly develops severe abdominal pain and a rigid
abdomen. Which complication should the nurse suspect?
A) Dumping syndrome
B) Bowel obstruction
C) Perforation
D) Gastroenteritis
Correct Answer: Perforation
Rationale: Sudden severe abdominal pain with a rigid, board-like abdomen is the classic presentation
of gastrointestinal perforation, which is a medical emergency. When an ulcer erodes through the full
thickness of the stomach or duodenal wall, gastric contents spill into the peritoneal cavity, causing
chemical peritonitis. Immediate surgical intervention is required.
6. Which assessment finding is most concerning in a patient with peptic ulcer disease?
A) Mild nausea after eating
B) Sudden severe abdominal pain with guarding
C) Occasional heartburn
D) Decreased appetite for one day
Correct Answer: Sudden severe abdominal pain with guarding
Rationale: Sudden severe pain accompanied by abdominal guarding or rigidity indicates peritoneal
irritation, which may result from ulcer perforation. This is a life-threatening complication requiring
emergency evaluation. Mild nausea, occasional heartburn, and brief appetite changes are common
and less urgent findings in peptic ulcer disease.
7. A patient with a suspected upper gastrointestinal bleed is being assessed. Which finding
should the nurse report promptly?
A) Black, tarry stools
, B) Mild heartburn after meals
C) Increased appetite
D) Formed brown stool
Correct Answer: Black, tarry stools
Rationale: Melena, characterized by black, tarry stools, indicates digested blood from an upper
gastrointestinal source. This finding suggests significant bleeding that requires prompt medical
evaluation and intervention. Mild heartburn, increased appetite, and formed brown stool do not
indicate active bleeding.
8. Which medication class is commonly prescribed to reduce gastric acid secretion in patients
with GERD?
A) Antidiarrheals
B) Proton pump inhibitors
C) Anticoagulants
D) Bronchodilators
Correct Answer: Proton pump inhibitors
Rationale: Proton pump inhibitors such as omeprazole and pantoprazole are first-line agents for
suppressing gastric acid production in GERD. They work by inhibiting the final step of acid secretion in
parietal cells, providing more effective and sustained acid suppression than H2 blockers.
Antidiarrheals, anticoagulants, and bronchodilators do not reduce gastric acid.
9. A patient with chronic GERD reports nighttime symptoms that disrupt sleep. Which
intervention is most appropriate?
A) Elevate the head of the bed
B) Drink a large volume of fluid before sleeping
C) Eat a high-fat snack at bedtime
D) Lie completely flat to promote gastric emptying
Correct Answer: Elevate the head of the bed
Rationale: Elevating the head of the bed uses gravity to prevent gastric contents from refluxing into
the esophagus during sleep. This simple positional intervention can significantly reduce nighttime
GERD symptoms. Large fluid intake, high-fat snacks, and lying flat would all worsen reflux and should
be avoided.
10. Which patient statement indicates a need for additional teaching about GERD management?
A) "I should avoid eating immediately before going to bed."
B) "I can elevate the head of my bed if nighttime symptoms occur."
C) "I should identify foods that worsen my symptoms."
D) "I should lie down right after meals so my stomach can empty."
2026/2027 | Gastrointestinal Nursing Q&A | Nursing
1. Which of the following best describes the primary mechanism by which proton pump
inhibitors reduce gastric acid secretion?
A) Blocking histamine H2 receptors on parietal cells
B) Irreversibly inhibiting the hydrogen-potassium ATPase pump
C) Neutralizing existing acid in the stomach lumen
D) Coating the gastric mucosa with a protective barrier
Correct Answer: Irreversibly inhibiting the hydrogen-potassium ATPase pump
Rationale: Proton pump inhibitors work by irreversibly blocking the hydrogen-potassium ATPase
enzyme system in gastric parietal cells, which is the final common pathway for acid secretion. This
produces prolonged suppression of both basal and stimulated acid production. H2 receptor
antagonists work by a different mechanism, and antacids neutralize existing acid without reducing
secretion.
2. When are antacids most effective for treating gastroesophageal reflux symptoms?
A) Immediately before breakfast
B) One to three hours after eating
C) Only at bedtime
D) On an empty stomach
Correct Answer: One to three hours after eating
Rationale: Antacids are most effective when taken one to three hours after meals, when gastric acid
secretion is at its peak and the stomach is emptying. This timing allows the medication to neutralize
acid before it can reflux into the esophagus. Taking antacids on an empty stomach provides only brief
relief because they are rapidly emptied from the stomach.
3. A patient taking an antacid for GERD also takes other oral medications. How long should the
patient wait before taking other PO medications?
A) 30 minutes
B) 1 hour
C) 2 to 3 hours
D) No waiting period is required
Correct Answer: 2 to 3 hours
Rationale: Antacids can alter the absorption of many oral medications by changing gastric pH and
delaying gastric emptying. A separation interval of two to three hours is recommended to minimize
this interaction. This prevents reduced therapeutic effects of other medications such as antibiotics,
digoxin, and levothyroxine.
, 4. Which statement best describes gastritis?
A) Inflammation of the inner tissue lining of the stomach that compromises mucosal integrity
B) A malignant tumor of the gastric fundus
C) Complete absence of gastric acid production
D) Herniation of the stomach through the diaphragm
Correct Answer: Inflammation of the inner tissue lining of the stomach that compromises mucosal
integrity
Rationale: Gastritis is defined as inflammation of the gastric mucosa, which can be acute or chronic.
The inflammatory process disrupts the protective mucosal barrier, allowing acid and pepsin to
damage the stomach lining. This can lead to erosion, ulceration, and bleeding if not treated
appropriately.
5. A patient with peptic ulcer disease suddenly develops severe abdominal pain and a rigid
abdomen. Which complication should the nurse suspect?
A) Dumping syndrome
B) Bowel obstruction
C) Perforation
D) Gastroenteritis
Correct Answer: Perforation
Rationale: Sudden severe abdominal pain with a rigid, board-like abdomen is the classic presentation
of gastrointestinal perforation, which is a medical emergency. When an ulcer erodes through the full
thickness of the stomach or duodenal wall, gastric contents spill into the peritoneal cavity, causing
chemical peritonitis. Immediate surgical intervention is required.
6. Which assessment finding is most concerning in a patient with peptic ulcer disease?
A) Mild nausea after eating
B) Sudden severe abdominal pain with guarding
C) Occasional heartburn
D) Decreased appetite for one day
Correct Answer: Sudden severe abdominal pain with guarding
Rationale: Sudden severe pain accompanied by abdominal guarding or rigidity indicates peritoneal
irritation, which may result from ulcer perforation. This is a life-threatening complication requiring
emergency evaluation. Mild nausea, occasional heartburn, and brief appetite changes are common
and less urgent findings in peptic ulcer disease.
7. A patient with a suspected upper gastrointestinal bleed is being assessed. Which finding
should the nurse report promptly?
A) Black, tarry stools
, B) Mild heartburn after meals
C) Increased appetite
D) Formed brown stool
Correct Answer: Black, tarry stools
Rationale: Melena, characterized by black, tarry stools, indicates digested blood from an upper
gastrointestinal source. This finding suggests significant bleeding that requires prompt medical
evaluation and intervention. Mild heartburn, increased appetite, and formed brown stool do not
indicate active bleeding.
8. Which medication class is commonly prescribed to reduce gastric acid secretion in patients
with GERD?
A) Antidiarrheals
B) Proton pump inhibitors
C) Anticoagulants
D) Bronchodilators
Correct Answer: Proton pump inhibitors
Rationale: Proton pump inhibitors such as omeprazole and pantoprazole are first-line agents for
suppressing gastric acid production in GERD. They work by inhibiting the final step of acid secretion in
parietal cells, providing more effective and sustained acid suppression than H2 blockers.
Antidiarrheals, anticoagulants, and bronchodilators do not reduce gastric acid.
9. A patient with chronic GERD reports nighttime symptoms that disrupt sleep. Which
intervention is most appropriate?
A) Elevate the head of the bed
B) Drink a large volume of fluid before sleeping
C) Eat a high-fat snack at bedtime
D) Lie completely flat to promote gastric emptying
Correct Answer: Elevate the head of the bed
Rationale: Elevating the head of the bed uses gravity to prevent gastric contents from refluxing into
the esophagus during sleep. This simple positional intervention can significantly reduce nighttime
GERD symptoms. Large fluid intake, high-fat snacks, and lying flat would all worsen reflux and should
be avoided.
10. Which patient statement indicates a need for additional teaching about GERD management?
A) "I should avoid eating immediately before going to bed."
B) "I can elevate the head of my bed if nighttime symptoms occur."
C) "I should identify foods that worsen my symptoms."
D) "I should lie down right after meals so my stomach can empty."
