NR 507 Advanced Pathophysiology Week 5
Exam: Gastrointestinal Disorders and
Neurobiological Function 100 Questions
with Answers and Rationales
SECTION A: Disorders of the Upper Gastrointestinal Tract
(Questions 1-20)
1. A 45-year-old patient presents with heartburn,
regurgitation, and dysphagia. These symptoms are most
consistent with:
A) Peptic ulcer disease
B) Gastroesophageal reflux disease (GERD)
C) Gastritis
D) Esophageal cancer
Correct Answer: B) Gastroesophageal reflux disease (GERD)
Expert Rationale: GERD is characterized by chronic symptoms of
heartburn (pyrosis), regurgitation, and dysphagia caused by the
retrograde flow of gastric contents into the esophagus. It results
from lower esophageal sphincter (LES) dysfunction .
2. The primary risk factor for the development of GERD is:
A) H. pylori infection
B) Lower esophageal sphincter dysfunction
,C) Increased gastric acid secretion
D) Delayed gastric emptying
Correct Answer: B) Lower esophageal sphincter dysfunction
Expert Rationale: LES dysfunction is the primary mechanism of
GERD. Transient LES relaxations allow gastric contents to reflux
into the esophagus. Other contributing factors include hiatal
hernia, increased intra-abdominal pressure, obesity, and certain
foods .
3. Barrett's esophagus is a complication of chronic GERD
characterized by:
A) Squamous metaplasia of the esophageal epithelium
B) Columnar metaplasia of the esophageal epithelium
C) Dysplasia of the gastric mucosa
D) Hyperplasia of the esophageal glands
Correct Answer: B) Columnar metaplasia of the esophageal
epithelium
Expert Rationale: Barrett's esophagus is a premalignant condition
in which the normal stratified squamous epithelium of the
esophagus is replaced by columnar epithelium (intestinal
metaplasia). It increases the risk of esophageal adenocarcinoma .
4. A patient with GERD is diagnosed with Barrett's esophagus.
Which of the following is the most appropriate surveillance
strategy?
,A) Annual endoscopy
B) Endoscopy every 3-5 years
C) No surveillance needed
D) Barium swallow annually
Correct Answer: B) Endoscopy every 3-5 years
Expert Rationale: Barrett's esophagus requires surveillance
endoscopy with biopsy to detect dysplasia. The frequency depends
on the presence and grade of dysplasia. Without dysplasia,
surveillance every 3-5 years is recommended .
5. A 55-year-old patient with a history of GERD presents with
progressive dysphagia and weight loss. Which diagnosis
should be suspected?
A) Esophageal stricture
B) Esophageal adenocarcinoma
C) Achalasia
D) Esophageal spasm
Correct Answer: B) Esophageal adenocarcinoma
Expert Rationale: Progressive dysphagia and weight loss in a
patient with chronic GERD and Barrett's esophagus raises concern
for esophageal adenocarcinoma. This is a complication of Barrett's
esophagus and requires urgent endoscopy .
6. H. pylori infection is a major risk factor for which
gastrointestinal condition?
, A) GERD
B) Peptic ulcer disease
C) Barrett's esophagus
D) Esophageal cancer
Correct Answer: B) Peptic ulcer disease
Expert Rationale: H. pylori infection is the most common cause of
peptic ulcer disease (gastric and duodenal ulcers). It colonizes the
gastric mucosa, causing inflammation and increased acid secretion,
leading to ulcer formation .
7. A patient with peptic ulcer disease presents with epigastric
pain that is relieved by eating. This is most characteristic of:
A) Gastric ulcer
B) Duodenal ulcer
C) Esophageal ulcer
D) Stress ulcer
Correct Answer: B) Duodenal ulcer
Expert Rationale: Duodenal ulcers typically cause pain that occurs
1-3 hours after meals or at night and is relieved by food or antacids.
Gastric ulcers often cause pain that is aggravated by eating .
8. Which of the following is a complication of peptic ulcer
disease?
Exam: Gastrointestinal Disorders and
Neurobiological Function 100 Questions
with Answers and Rationales
SECTION A: Disorders of the Upper Gastrointestinal Tract
(Questions 1-20)
1. A 45-year-old patient presents with heartburn,
regurgitation, and dysphagia. These symptoms are most
consistent with:
A) Peptic ulcer disease
B) Gastroesophageal reflux disease (GERD)
C) Gastritis
D) Esophageal cancer
Correct Answer: B) Gastroesophageal reflux disease (GERD)
Expert Rationale: GERD is characterized by chronic symptoms of
heartburn (pyrosis), regurgitation, and dysphagia caused by the
retrograde flow of gastric contents into the esophagus. It results
from lower esophageal sphincter (LES) dysfunction .
2. The primary risk factor for the development of GERD is:
A) H. pylori infection
B) Lower esophageal sphincter dysfunction
,C) Increased gastric acid secretion
D) Delayed gastric emptying
Correct Answer: B) Lower esophageal sphincter dysfunction
Expert Rationale: LES dysfunction is the primary mechanism of
GERD. Transient LES relaxations allow gastric contents to reflux
into the esophagus. Other contributing factors include hiatal
hernia, increased intra-abdominal pressure, obesity, and certain
foods .
3. Barrett's esophagus is a complication of chronic GERD
characterized by:
A) Squamous metaplasia of the esophageal epithelium
B) Columnar metaplasia of the esophageal epithelium
C) Dysplasia of the gastric mucosa
D) Hyperplasia of the esophageal glands
Correct Answer: B) Columnar metaplasia of the esophageal
epithelium
Expert Rationale: Barrett's esophagus is a premalignant condition
in which the normal stratified squamous epithelium of the
esophagus is replaced by columnar epithelium (intestinal
metaplasia). It increases the risk of esophageal adenocarcinoma .
4. A patient with GERD is diagnosed with Barrett's esophagus.
Which of the following is the most appropriate surveillance
strategy?
,A) Annual endoscopy
B) Endoscopy every 3-5 years
C) No surveillance needed
D) Barium swallow annually
Correct Answer: B) Endoscopy every 3-5 years
Expert Rationale: Barrett's esophagus requires surveillance
endoscopy with biopsy to detect dysplasia. The frequency depends
on the presence and grade of dysplasia. Without dysplasia,
surveillance every 3-5 years is recommended .
5. A 55-year-old patient with a history of GERD presents with
progressive dysphagia and weight loss. Which diagnosis
should be suspected?
A) Esophageal stricture
B) Esophageal adenocarcinoma
C) Achalasia
D) Esophageal spasm
Correct Answer: B) Esophageal adenocarcinoma
Expert Rationale: Progressive dysphagia and weight loss in a
patient with chronic GERD and Barrett's esophagus raises concern
for esophageal adenocarcinoma. This is a complication of Barrett's
esophagus and requires urgent endoscopy .
6. H. pylori infection is a major risk factor for which
gastrointestinal condition?
, A) GERD
B) Peptic ulcer disease
C) Barrett's esophagus
D) Esophageal cancer
Correct Answer: B) Peptic ulcer disease
Expert Rationale: H. pylori infection is the most common cause of
peptic ulcer disease (gastric and duodenal ulcers). It colonizes the
gastric mucosa, causing inflammation and increased acid secretion,
leading to ulcer formation .
7. A patient with peptic ulcer disease presents with epigastric
pain that is relieved by eating. This is most characteristic of:
A) Gastric ulcer
B) Duodenal ulcer
C) Esophageal ulcer
D) Stress ulcer
Correct Answer: B) Duodenal ulcer
Expert Rationale: Duodenal ulcers typically cause pain that occurs
1-3 hours after meals or at night and is relieved by food or antacids.
Gastric ulcers often cause pain that is aggravated by eating .
8. Which of the following is a complication of peptic ulcer
disease?
