NSG 3850 Exam 3 Review -
Comprehensive GI Pathophysiology
Exam 2026
Section 1: Diarrhea and H. Pylori (Questions 1-25)
1. A patient presents with diarrhea caused by increased amounts of poorly absorbed solutes in the
intestine. Which type of diarrhea is this?
A. Secretory diarrhea
B. Osmotic diarrhea
C. Exudative diarrhea
D. Motility-related diarrhea
ANSWER: B
Rationale:
Option A (Secretory diarrhea): Incorrect. Secretory diarrhea is caused by toxins stimulating intestinal
fluid secretion or impairing absorption, resulting in loose stools 1L/day. It is not related to poorly
absorbed solutes.
Option B (Osmotic diarrhea): Correct. Osmotic diarrhea occurs when there are increased amounts of
poorly absorbed solutes in the intestine, which draw water into the intestinal lumen osmotically.
Option C (Exudative diarrhea): Incorrect. Exudative diarrhea is characterized by inflammation causing
mucus, blood, and protein loss due to infection. It is associated with conditions like ulcerative colitis,
Crohn's disease, and H. pylori.
Option D (Motility-related diarrhea): Incorrect. Motility disturbances cause decreased transit time of
chyme with absorptive surfaces, not related to poorly absorbed solutes.
,2. Which pathogen is most likely associated with exudative diarrhea in a patient with ulcerative colitis,
Crohn's disease, or peptic ulcer?
A. Escherichia coli
B. H. pylori
C. Clostridium difficile
D. Salmonella
ANSWER: B
Rationale:
Option A (Escherichia coli): Incorrect. While E. coli can cause diarrhea, it is not the primary pathogen
specifically associated with the combination of ulcerative colitis, Crohn's disease, and peptic ulcer.
Option B (H. pylori): Correct. H. pylori is the causative factor/antigen for exudative diarrhea and is
associated with ulcerative colitis, Crohn's disease, and peptic ulcer. It is a key factor in ulcer formation
and Peptic Ulcer Disease.
Option C (Clostridium difficile): Incorrect. C. diff causes antibiotic-associated colitis and
pseudomembranous colitis, not specifically the triad mentioned.
Option D (Salmonella): Incorrect. Salmonella causes gastroenteritis but is not specifically linked to
ulcerative colitis, Crohn's, or peptic ulcer disease.
3. A nurse is educating a patient about secretory diarrhea. Which statement best describes the
mechanism of this condition?
A. "Inflammation causes mucus and blood in your stool"
B. "Toxins stimulate your intestine to secrete fluid and impair absorption"
C. "Poorly absorbed solutes draw water into your intestine"
D. "Decreased transit time prevents proper absorption"
ANSWER: B
Rationale:
Option A: Incorrect. This describes exudative diarrhea, which involves inflammation causing mucus,
blood, and protein loss.
Option B: Correct. Secretory diarrhea is caused by toxins stimulating intestinal fluid secretion and/or
impairing absorption, resulting in approximately 1L/day of loose stools.
Option C: Incorrect. This describes osmotic diarrhea mechanism.
Option D: Incorrect. This describes motility-related diarrhea.
4. Which condition should a nurse always check for when assessing a patient with ulcers?
,A. C. difficile infection
B. H. pylori infection
C. E. coli infection
D. Viral gastroenteritis
ANSWER: B
Rationale:
Option A: Incorrect. C. diff is associated with antibiotic use and causes pseudomembranous colitis, not
typically peptic ulcers.
Option B: Correct. H. pylori should always be checked in patients with ulcers as it is a key factor in ulcer
formation and Peptic Ulcer Disease. The prevalence of H. pylori infection in patients with duodenal
ulcers is 70-90%
accessmedicine.mhmedical.com
.
Option C: Incorrect. E. coli is not a primary cause of peptic ulcers.
Option D: Incorrect. Viral gastroenteritis does not cause peptic ulcers.
5. Exudative diarrhea is characterized by which of the following?
A. Increased transit time through the intestine
B. Presence of mucus, blood, and protein due to inflammation
C. Toxin-mediated fluid secretion
D. Poorly absorbed carbohydrates
ANSWER: B
Rationale:
Option A: Incorrect. Exudative diarrhea is not characterized by increased transit time; that would be
motility-related diarrhea.
Option B: Correct. Exudative diarrhea involves inflammation causing the presence of mucus, blood, and
protein in the stool due to infection. It is associated with ulcerative colitis, Crohn's disease, and H. pylori.
Option C: Incorrect. Toxin-mediated fluid secretion describes secretory diarrhea.
Option D: Incorrect. Poorly absorbed carbohydrates cause osmotic diarrhea.
6. A patient with motility disturbances is experiencing diarrhea. What is the underlying
pathophysiology?
A. Increased inflammatory response in the intestinal mucosa
, B. Decreased transit time of chyme with absorptive surfaces
C. Bacterial toxin stimulation of fluid secretion
D. Osmotic imbalance from unabsorbed solutes
ANSWER: B
Rationale:
Option A: Incorrect. This describes exudative diarrhea pathophysiology.
Option B: Correct. Motility disturbances cause decreased transit time of chyme with absorptive surfaces,
preventing adequate absorption and resulting in diarrhea.
Option C: Incorrect. This describes secretory diarrhea.
Option D: Incorrect. This describes osmotic diarrhea.
7. Which statement about H. pylori is accurate?
A. It is primarily associated with viral gastroenteritis
B. It is a key factor in ulcer formation and peptic ulcer disease
C. It causes only osmotic diarrhea
D. It is transmitted through respiratory droplets
ANSWER: B
Rationale:
Option A: Incorrect. H. pylori is a bacterial infection, not viral, and is not associated with gastroenteritis.
Option B: Correct. H. pylori is a key factor in ulcer formation and Peptic Ulcer Disease. It is the causative
factor/antigen for exudative diarrhea and should always be checked in patients with ulcers. Current
2026 guidelines emphasize its role in PUD pathogenesis
www.gastroenterologyandhepatology.net
.
Option C: Incorrect. H. pylori is associated with exudative diarrhea, not osmotic diarrhea.
Option D: Incorrect. H. pylori is transmitted through oral-oral or fecal-oral routes, not respiratory
droplets.
8. A patient asks about the relationship between their peptic ulcer and diarrhea. Which response by the
nurse is most accurate?
A. "Peptic ulcers only cause constipation, not diarrhea"
B. "H. pylori associated with your ulcer can cause exudative diarrhea"
Comprehensive GI Pathophysiology
Exam 2026
Section 1: Diarrhea and H. Pylori (Questions 1-25)
1. A patient presents with diarrhea caused by increased amounts of poorly absorbed solutes in the
intestine. Which type of diarrhea is this?
A. Secretory diarrhea
B. Osmotic diarrhea
C. Exudative diarrhea
D. Motility-related diarrhea
ANSWER: B
Rationale:
Option A (Secretory diarrhea): Incorrect. Secretory diarrhea is caused by toxins stimulating intestinal
fluid secretion or impairing absorption, resulting in loose stools 1L/day. It is not related to poorly
absorbed solutes.
Option B (Osmotic diarrhea): Correct. Osmotic diarrhea occurs when there are increased amounts of
poorly absorbed solutes in the intestine, which draw water into the intestinal lumen osmotically.
Option C (Exudative diarrhea): Incorrect. Exudative diarrhea is characterized by inflammation causing
mucus, blood, and protein loss due to infection. It is associated with conditions like ulcerative colitis,
Crohn's disease, and H. pylori.
Option D (Motility-related diarrhea): Incorrect. Motility disturbances cause decreased transit time of
chyme with absorptive surfaces, not related to poorly absorbed solutes.
,2. Which pathogen is most likely associated with exudative diarrhea in a patient with ulcerative colitis,
Crohn's disease, or peptic ulcer?
A. Escherichia coli
B. H. pylori
C. Clostridium difficile
D. Salmonella
ANSWER: B
Rationale:
Option A (Escherichia coli): Incorrect. While E. coli can cause diarrhea, it is not the primary pathogen
specifically associated with the combination of ulcerative colitis, Crohn's disease, and peptic ulcer.
Option B (H. pylori): Correct. H. pylori is the causative factor/antigen for exudative diarrhea and is
associated with ulcerative colitis, Crohn's disease, and peptic ulcer. It is a key factor in ulcer formation
and Peptic Ulcer Disease.
Option C (Clostridium difficile): Incorrect. C. diff causes antibiotic-associated colitis and
pseudomembranous colitis, not specifically the triad mentioned.
Option D (Salmonella): Incorrect. Salmonella causes gastroenteritis but is not specifically linked to
ulcerative colitis, Crohn's, or peptic ulcer disease.
3. A nurse is educating a patient about secretory diarrhea. Which statement best describes the
mechanism of this condition?
A. "Inflammation causes mucus and blood in your stool"
B. "Toxins stimulate your intestine to secrete fluid and impair absorption"
C. "Poorly absorbed solutes draw water into your intestine"
D. "Decreased transit time prevents proper absorption"
ANSWER: B
Rationale:
Option A: Incorrect. This describes exudative diarrhea, which involves inflammation causing mucus,
blood, and protein loss.
Option B: Correct. Secretory diarrhea is caused by toxins stimulating intestinal fluid secretion and/or
impairing absorption, resulting in approximately 1L/day of loose stools.
Option C: Incorrect. This describes osmotic diarrhea mechanism.
Option D: Incorrect. This describes motility-related diarrhea.
4. Which condition should a nurse always check for when assessing a patient with ulcers?
,A. C. difficile infection
B. H. pylori infection
C. E. coli infection
D. Viral gastroenteritis
ANSWER: B
Rationale:
Option A: Incorrect. C. diff is associated with antibiotic use and causes pseudomembranous colitis, not
typically peptic ulcers.
Option B: Correct. H. pylori should always be checked in patients with ulcers as it is a key factor in ulcer
formation and Peptic Ulcer Disease. The prevalence of H. pylori infection in patients with duodenal
ulcers is 70-90%
accessmedicine.mhmedical.com
.
Option C: Incorrect. E. coli is not a primary cause of peptic ulcers.
Option D: Incorrect. Viral gastroenteritis does not cause peptic ulcers.
5. Exudative diarrhea is characterized by which of the following?
A. Increased transit time through the intestine
B. Presence of mucus, blood, and protein due to inflammation
C. Toxin-mediated fluid secretion
D. Poorly absorbed carbohydrates
ANSWER: B
Rationale:
Option A: Incorrect. Exudative diarrhea is not characterized by increased transit time; that would be
motility-related diarrhea.
Option B: Correct. Exudative diarrhea involves inflammation causing the presence of mucus, blood, and
protein in the stool due to infection. It is associated with ulcerative colitis, Crohn's disease, and H. pylori.
Option C: Incorrect. Toxin-mediated fluid secretion describes secretory diarrhea.
Option D: Incorrect. Poorly absorbed carbohydrates cause osmotic diarrhea.
6. A patient with motility disturbances is experiencing diarrhea. What is the underlying
pathophysiology?
A. Increased inflammatory response in the intestinal mucosa
, B. Decreased transit time of chyme with absorptive surfaces
C. Bacterial toxin stimulation of fluid secretion
D. Osmotic imbalance from unabsorbed solutes
ANSWER: B
Rationale:
Option A: Incorrect. This describes exudative diarrhea pathophysiology.
Option B: Correct. Motility disturbances cause decreased transit time of chyme with absorptive surfaces,
preventing adequate absorption and resulting in diarrhea.
Option C: Incorrect. This describes secretory diarrhea.
Option D: Incorrect. This describes osmotic diarrhea.
7. Which statement about H. pylori is accurate?
A. It is primarily associated with viral gastroenteritis
B. It is a key factor in ulcer formation and peptic ulcer disease
C. It causes only osmotic diarrhea
D. It is transmitted through respiratory droplets
ANSWER: B
Rationale:
Option A: Incorrect. H. pylori is a bacterial infection, not viral, and is not associated with gastroenteritis.
Option B: Correct. H. pylori is a key factor in ulcer formation and Peptic Ulcer Disease. It is the causative
factor/antigen for exudative diarrhea and should always be checked in patients with ulcers. Current
2026 guidelines emphasize its role in PUD pathogenesis
www.gastroenterologyandhepatology.net
.
Option C: Incorrect. H. pylori is associated with exudative diarrhea, not osmotic diarrhea.
Option D: Incorrect. H. pylori is transmitted through oral-oral or fecal-oral routes, not respiratory
droplets.
8. A patient asks about the relationship between their peptic ulcer and diarrhea. Which response by the
nurse is most accurate?
A. "Peptic ulcers only cause constipation, not diarrhea"
B. "H. pylori associated with your ulcer can cause exudative diarrhea"
