NR 545 FINAL EXAM
COMPREHENSIVE EXAM PREP
2026/2027 | VERIFIED Q&A |
CHAMBERLAIN UNIVERSITY
Question 1
A 48-year-old patient presents with severe epigastric pain that
worsens almost immediately after eating. The patient notes that
antacids provide minimal and temporary relief. Endoscopy
reveals a defect extending through the mucosal layer into the
submucosa. Which condition best describes this clinical
presentation?
• A) Duodenal ulcer
• B) Gastric ulcer
• C) Acute gastritis
• D) Gastroenteritis
Correct Answer: B) Gastric ulcer
Rationale: Gastric ulcers typically cause epigastric burning pain
shortly after meal ingestion, and antacids yield minimal relief.
The penetration through the submucosa confirms peptic ulcer
disease rather than superficial gastritis.
Question 2
,A patient with a history of chronic back pain managed with
high-dose ibuprofen presents with gnawing epigastric pain
occurring 3 to 4 hours after meals and frequently awakening
them at night. Ingestion of food or antacids temporarily relieves
the discomfort. What is the most likely etiology of this patient's
symptoms?
• A) Autoimmune destruction of parietal cells
• B) Duodenal ulceration exacerbated by suppressed mucosal
prostaglandin synthesis
• C) Transmural inflammation of the terminal ileum
• D) Ascending bacterial infection of the biliary tree
Correct Answer: B) Duodenal ulceration exacerbated by
suppressed mucosal prostaglandin synthesis
Rationale: Pain occurring 3 to 4 hours post-meal that wakes the
patient at night and improves with antacids/food is classic for
duodenal ulcers. NSAID use inhibits COX-1, decreasing
prostaglandin synthesis and compromising mucosal barrier
integrity.
Question 3
A client is admitted with a severe peptic ulcer. The nurse
understands that peptic ulcers represent a deep mucosal lesion.
Which histological milestone differentiates a peptic ulcer from
superficial erosion?
• A) Penetration through the muscularis mucosae into the
submucosa
, • B) Destruction restricted purely to the epithelial basement
membrane
• C) Diffuse lymphocytic infiltration of the esophageal
adventitia
• D) Transmural necrosis involving the serosa without
mucosal breakdown
Correct Answer: A) Penetration through the muscularis
mucosae into the submucosa
Rationale: Peptic ulcers are pathologically defined by erosion
penetrating through the muscularis mucosae into the submucosa
or deeper, placing the patient at risk for severe perforation or
hemorrhage.
Question 4
A nurse practitioner is reviewing blood types and
predispositions to GI disorders during a clinical conference.
Which blood type carries a well-documented higher incidence of
duodenal ulcer development?
• A) Type A
• B) Type B
• C) Type AB
• D) Type O
Correct Answer: D) Type O
Rationale: Individuals with blood Type O have a statistically
higher incidence of developing duodenal ulcers, likely due to
, enhanced binding efficiency of H. pylori to mucosal surface
antigens in these individuals.
Question 5
A 52-year-old male with a history of H. pylori peptic ulcer
disease presents to the emergency department with sudden,
severe, board-like abdominal rigidity and severe peritoneal
signs. Which life-threatening complication of peptic ulcer
disease should the clinician suspect first?
• A) Toxic megacolon
• B) Perforation
• C) Biliary colic
• D) Intestinal intussusception
Correct Answer: B) Perforation
Rationale: Perforation occurs when an ulcer erodes completely
through the stomach or duodenal wall, spilling luminal contents
into the peritoneal cavity and causing sudden, agonizing
abdominal pain with board-like rigidity.
Question 6
A patient is diagnosed with Helicobacter pylori-associated
peptic ulcer disease. Which mechanism best explains how H.
pylori damages the gastric mucosa?
COMPREHENSIVE EXAM PREP
2026/2027 | VERIFIED Q&A |
CHAMBERLAIN UNIVERSITY
Question 1
A 48-year-old patient presents with severe epigastric pain that
worsens almost immediately after eating. The patient notes that
antacids provide minimal and temporary relief. Endoscopy
reveals a defect extending through the mucosal layer into the
submucosa. Which condition best describes this clinical
presentation?
• A) Duodenal ulcer
• B) Gastric ulcer
• C) Acute gastritis
• D) Gastroenteritis
Correct Answer: B) Gastric ulcer
Rationale: Gastric ulcers typically cause epigastric burning pain
shortly after meal ingestion, and antacids yield minimal relief.
The penetration through the submucosa confirms peptic ulcer
disease rather than superficial gastritis.
Question 2
,A patient with a history of chronic back pain managed with
high-dose ibuprofen presents with gnawing epigastric pain
occurring 3 to 4 hours after meals and frequently awakening
them at night. Ingestion of food or antacids temporarily relieves
the discomfort. What is the most likely etiology of this patient's
symptoms?
• A) Autoimmune destruction of parietal cells
• B) Duodenal ulceration exacerbated by suppressed mucosal
prostaglandin synthesis
• C) Transmural inflammation of the terminal ileum
• D) Ascending bacterial infection of the biliary tree
Correct Answer: B) Duodenal ulceration exacerbated by
suppressed mucosal prostaglandin synthesis
Rationale: Pain occurring 3 to 4 hours post-meal that wakes the
patient at night and improves with antacids/food is classic for
duodenal ulcers. NSAID use inhibits COX-1, decreasing
prostaglandin synthesis and compromising mucosal barrier
integrity.
Question 3
A client is admitted with a severe peptic ulcer. The nurse
understands that peptic ulcers represent a deep mucosal lesion.
Which histological milestone differentiates a peptic ulcer from
superficial erosion?
• A) Penetration through the muscularis mucosae into the
submucosa
, • B) Destruction restricted purely to the epithelial basement
membrane
• C) Diffuse lymphocytic infiltration of the esophageal
adventitia
• D) Transmural necrosis involving the serosa without
mucosal breakdown
Correct Answer: A) Penetration through the muscularis
mucosae into the submucosa
Rationale: Peptic ulcers are pathologically defined by erosion
penetrating through the muscularis mucosae into the submucosa
or deeper, placing the patient at risk for severe perforation or
hemorrhage.
Question 4
A nurse practitioner is reviewing blood types and
predispositions to GI disorders during a clinical conference.
Which blood type carries a well-documented higher incidence of
duodenal ulcer development?
• A) Type A
• B) Type B
• C) Type AB
• D) Type O
Correct Answer: D) Type O
Rationale: Individuals with blood Type O have a statistically
higher incidence of developing duodenal ulcers, likely due to
, enhanced binding efficiency of H. pylori to mucosal surface
antigens in these individuals.
Question 5
A 52-year-old male with a history of H. pylori peptic ulcer
disease presents to the emergency department with sudden,
severe, board-like abdominal rigidity and severe peritoneal
signs. Which life-threatening complication of peptic ulcer
disease should the clinician suspect first?
• A) Toxic megacolon
• B) Perforation
• C) Biliary colic
• D) Intestinal intussusception
Correct Answer: B) Perforation
Rationale: Perforation occurs when an ulcer erodes completely
through the stomach or duodenal wall, spilling luminal contents
into the peritoneal cavity and causing sudden, agonizing
abdominal pain with board-like rigidity.
Question 6
A patient is diagnosed with Helicobacter pylori-associated
peptic ulcer disease. Which mechanism best explains how H.
pylori damages the gastric mucosa?
