NR 507 / NR507 Advanced Pathophysiology
Final Exam | Verified Answers | Latest Update
| Chamberlain University | Exam
Review & Practice Questions
Question 1
A 52-year-old patient reports chronic heartburn that worsens when lying flat and
is accompanied by a persistent cough and hoarseness. Which pathophysiological
mechanism best explains the patient's atypical symptoms?
A. Increased gastric acid secretion due to Zollinger-Ellison syndrome
B. Impaired lower esophageal sphincter tone allowing reflux into the larynx
C. Delayed gastric emptying causing intestinal distention
D. Esophageal strictures causing mechanical obstruction
Correct Answer: B. Impaired lower esophageal sphincter tone allowing reflux into the
larynx
Rationale: Atypical GERD symptoms such as chronic cough and hoarseness occur when
gastric contents reflux beyond the esophagus into the larynx and respiratory tract. This
is most commonly caused by decreased lower esophageal sphincter tone, allowing
repeated exposure of upper airway tissues to acid .
Question 2
A patient with long-standing GERD has progressive dysphagia. Which
complication is the NP most concerned about based on GERD pathophysiology?
A. Esophageal varices
B. Esophageal stricture formation
C. Gastric outlet obstruction
D. Acute pancreatitis
Correct Answer: B. Esophageal stricture formation
,Rationale: Chronic acid exposure leads to esophagitis and fibrosis, increasing the risk of
esophageal strictures, which present with progressive dysphagia. This is a known
complication of untreated GERD .
Question 3
A patient with GERD continues to have symptoms despite lifestyle modifications
and H2 blockers. Which medication directly targets the underlying mechanism of
acid-mediated mucosal injury?
A. Metoclopramide
B. Sucralfate
C. Omeprazole
D. Aluminum hydroxide
Correct Answer: C. Omeprazole
Rationale: Proton pump inhibitors such as omeprazole inhibit gastric acid secretion at
the proton pump, providing the most effective acid suppression and addressing the
core mechanism of GERD-related mucosal injury .
Question 4
Which of the following is a warning sign of GERD in patients over 50 years of age?
A. Heartburn after spicy meals
B. Dysphagia, odynophagia, and weight loss
C. Regurgitation of sour-tasting fluid
D. Relief with antacids
Correct Answer: B. Dysphagia, odynophagia, and weight loss
Rationale: Warning signs of GERD in patients over 50 include dysphagia (difficulty
swallowing), odynophagia (painful swallowing), nausea and vomiting, weight loss,
melena, and early satiety. These symptoms may indicate complications such as stricture
or malignancy .
,Question 5
The pathophysiology of GERD is primarily caused by:
A. Increased gastric acid production
B. Lower esophageal sphincter dysfunction, hiatal hernia, and esophageal motility
disorders
C. H. pylori infection
D. Increased gastrin secretion
Correct Answer: B. Lower esophageal sphincter dysfunction, hiatal hernia, and
esophageal motility disorders
Rationale: GERD is caused by lower esophageal sphincter dysfunction, hiatal hernia, and
esophageal motility disorders leading to gastric acid flowing back into the esophagus.
Impaired esophageal peristalsis reduces esophageal clearance, leading to pooling of
gastric acid .
Question 6
Which of the following statements about GERD is correct?
A. All patients with GERD have erosive esophagitis on endoscopy
B. Physical examination is usually normal in uncomplicated GERD
C. GERD always requires surgical intervention
D. GERD is only caused by spicy foods
Correct Answer: B. Physical examination is usually normal in uncomplicated GERD
Rationale: The physical examination is usually normal in uncomplicated GERD, although
there may be signs of esophagitis or other complications in severe cases. Not all GERD
patients have erosive esophagitis; some have non-erosive reflux disease (NERD) .
Question 7
A patient with chronic GERD develops esophageal stricture. Which
pathophysiological mechanism explains this complication?
, A. Increased gastric acid secretion
B. Chronic acid exposure leading to esophagitis and fibrosis
C. Reduced esophageal motility
D. H. pylori infection
Correct Answer: B. Chronic acid exposure leading to esophagitis and fibrosis
Rationale: Chronic acid exposure leads to esophagitis and fibrosis, increasing the risk of
esophageal strictures. This is a known complication of untreated GERD .
Question 8
Which of the following is the gold standard for diagnosing Peptic Ulcer Disease
(PUD)?
A. Upper GI series
B. Endoscopy
C. H. pylori serology
D. Abdominal ultrasound
Correct Answer: B. Endoscopy
Rationale: Endoscopy is the gold standard for diagnosing Peptic Ulcer Disease. It allows
direct visualization of the ulcer and provides the ability to obtain biopsies for histology
and H. pylori testing .
Question 9
A patient reports epigastric pain that improves with meals. Which ulcer type is
most consistent with this presentation?
A. Gastric ulcer
B. Duodenal ulcer
C. Stress ulcer
D. Malignant ulcer
Correct Answer: B. Duodenal ulcer
Final Exam | Verified Answers | Latest Update
| Chamberlain University | Exam
Review & Practice Questions
Question 1
A 52-year-old patient reports chronic heartburn that worsens when lying flat and
is accompanied by a persistent cough and hoarseness. Which pathophysiological
mechanism best explains the patient's atypical symptoms?
A. Increased gastric acid secretion due to Zollinger-Ellison syndrome
B. Impaired lower esophageal sphincter tone allowing reflux into the larynx
C. Delayed gastric emptying causing intestinal distention
D. Esophageal strictures causing mechanical obstruction
Correct Answer: B. Impaired lower esophageal sphincter tone allowing reflux into the
larynx
Rationale: Atypical GERD symptoms such as chronic cough and hoarseness occur when
gastric contents reflux beyond the esophagus into the larynx and respiratory tract. This
is most commonly caused by decreased lower esophageal sphincter tone, allowing
repeated exposure of upper airway tissues to acid .
Question 2
A patient with long-standing GERD has progressive dysphagia. Which
complication is the NP most concerned about based on GERD pathophysiology?
A. Esophageal varices
B. Esophageal stricture formation
C. Gastric outlet obstruction
D. Acute pancreatitis
Correct Answer: B. Esophageal stricture formation
,Rationale: Chronic acid exposure leads to esophagitis and fibrosis, increasing the risk of
esophageal strictures, which present with progressive dysphagia. This is a known
complication of untreated GERD .
Question 3
A patient with GERD continues to have symptoms despite lifestyle modifications
and H2 blockers. Which medication directly targets the underlying mechanism of
acid-mediated mucosal injury?
A. Metoclopramide
B. Sucralfate
C. Omeprazole
D. Aluminum hydroxide
Correct Answer: C. Omeprazole
Rationale: Proton pump inhibitors such as omeprazole inhibit gastric acid secretion at
the proton pump, providing the most effective acid suppression and addressing the
core mechanism of GERD-related mucosal injury .
Question 4
Which of the following is a warning sign of GERD in patients over 50 years of age?
A. Heartburn after spicy meals
B. Dysphagia, odynophagia, and weight loss
C. Regurgitation of sour-tasting fluid
D. Relief with antacids
Correct Answer: B. Dysphagia, odynophagia, and weight loss
Rationale: Warning signs of GERD in patients over 50 include dysphagia (difficulty
swallowing), odynophagia (painful swallowing), nausea and vomiting, weight loss,
melena, and early satiety. These symptoms may indicate complications such as stricture
or malignancy .
,Question 5
The pathophysiology of GERD is primarily caused by:
A. Increased gastric acid production
B. Lower esophageal sphincter dysfunction, hiatal hernia, and esophageal motility
disorders
C. H. pylori infection
D. Increased gastrin secretion
Correct Answer: B. Lower esophageal sphincter dysfunction, hiatal hernia, and
esophageal motility disorders
Rationale: GERD is caused by lower esophageal sphincter dysfunction, hiatal hernia, and
esophageal motility disorders leading to gastric acid flowing back into the esophagus.
Impaired esophageal peristalsis reduces esophageal clearance, leading to pooling of
gastric acid .
Question 6
Which of the following statements about GERD is correct?
A. All patients with GERD have erosive esophagitis on endoscopy
B. Physical examination is usually normal in uncomplicated GERD
C. GERD always requires surgical intervention
D. GERD is only caused by spicy foods
Correct Answer: B. Physical examination is usually normal in uncomplicated GERD
Rationale: The physical examination is usually normal in uncomplicated GERD, although
there may be signs of esophagitis or other complications in severe cases. Not all GERD
patients have erosive esophagitis; some have non-erosive reflux disease (NERD) .
Question 7
A patient with chronic GERD develops esophageal stricture. Which
pathophysiological mechanism explains this complication?
, A. Increased gastric acid secretion
B. Chronic acid exposure leading to esophagitis and fibrosis
C. Reduced esophageal motility
D. H. pylori infection
Correct Answer: B. Chronic acid exposure leading to esophagitis and fibrosis
Rationale: Chronic acid exposure leads to esophagitis and fibrosis, increasing the risk of
esophageal strictures. This is a known complication of untreated GERD .
Question 8
Which of the following is the gold standard for diagnosing Peptic Ulcer Disease
(PUD)?
A. Upper GI series
B. Endoscopy
C. H. pylori serology
D. Abdominal ultrasound
Correct Answer: B. Endoscopy
Rationale: Endoscopy is the gold standard for diagnosing Peptic Ulcer Disease. It allows
direct visualization of the ulcer and provides the ability to obtain biopsies for histology
and H. pylori testing .
Question 9
A patient reports epigastric pain that improves with meals. Which ulcer type is
most consistent with this presentation?
A. Gastric ulcer
B. Duodenal ulcer
C. Stress ulcer
D. Malignant ulcer
Correct Answer: B. Duodenal ulcer
