Gastric Fluid and Fecal Analysis

Question 1

1. All of the following are mechanisms of diarrhea
   EXCEPT:
   a. Increased osmotically active compounds such as
   carbohydrates causing increased fecal water and
   electrolytes
   b. Increased secretions leading to increased fluid
   presented to the large intestine
   c. Decreased osmosis
   d. Intestinal hypermotility

Answer 1

c. Decreased osmosis

Question 2

2. All of these are seen with malabsorption, maldigestion, or hypermotility, EXCEPT:
   a. Steatorrhea
   b. Creatorrhea
   c. Positive APT test
   d. Increased fecal carbohydrates

Answer 2

c. Positive APT test

Question 3

3. Bright red blood and mucus in feces are most often seen with:
   a. Malabsorption
   b. Dysentery
   c. Creatorrhea
   d. Upper GI tract bleeding

Answer 3

b. Dysentery

Question 4

4. Eosinophils are often seen with:
   a. Colorectal cancer
   b. Creatorrhea
   c. Fecal carbohydrates
   d. Parasites such as amebas

Answer 4

d. Parasites such as amebas

Question 5

5. An advantage of the guaiac tests over the other fecal
   occult blood tests is that they are:
   a. Not overly sensitive
   b. The most sensitive
   c. The most specific
   d. Do not need special diet

Answer 5

a. Not overly sensitive

Question 6

6. Even a few fecal leukocytes indicate:
   a. Steatorrhea
   b. Invasion of the intestinal wall by microbes
   c. Malabsorption

Answer 6

b. Invasion of the intestinal wall by microbes

Question 7

7. Steatorrhea is present in:
   a. Colorectal cancer
   b. Fetal hemoglobin
   c. Bacterial invasion of the intestine
   d. Giardiasis

Answer 7

d. Giardiasis

Question 8

8. Which of the following types of fats stains with Sudan Ill
   without heat or acid?
   a. Soaps
   b. Fatty acids
   c. Neutral fats (triglycerides)
   d. Carbohydrates

Answer 8

c. Neutral fats (triglycerides)

Question 9

9. Clinitest is used to detect this substance in newborn
   feces:
   a. Fatty acids
   b. Meat fibers
   c. Fetal blood
   d. Carbohydrates

Answer 9

d. Carbohydrates

Question 10

1 0. Who should be screened annually for occult blood?
a. Infants and pediatric patients
b. Adults older than age 50
c. Cystic fibrosis patients
d. All adults

Answer 10

b. Adults older than age 50

Question 11

1 1. Which of these conditions is associated with low gastric
acidity?
a. Melena
b. Pernicious anemia
c. Sickle cell anemia
d. Zollinger-Ellison syndrome

Answer 11

b. Pernicious anemia

Question 12

1 2. Which of these statements is TRUE concerning gastric
occult blood?
a. A red meat diet can cause a false-negative result
b. Peroxidase containing foods can cause a false-positive
result
c. Peroxidase in certain foods inhibits the peroxidase
reaction on occult blood test cards
d. A development of a blue calor indicates the test is
invalid

Answer 12

b. Peroxidase containing foods can cause a false-positive
result

Question 13

1 3. Which of the following tests are acceptable for
detecting occult blood in vomitus? (choose all that apply)
a. Guaiac-based gastric occult blood test
b. Guaiac-based fecal occult blood test
c. Immunochemical-based fecal occult blood test
d. Orthotolidine-based fecal occult blood test

Answer 13

a. Guaiac-based gastric occult blood test

Question 14

1 4. When food and water are ingested, they become a
substance in the stomach known as:
a. Amylase
b. Chyme
c. Gastrin
d. Peptidase

Answer 14

b. Chyme

Question 15

1 5. Accessory digestive organs include all of these
EXCEPT:
a. Gall bladder
b. Liver
c. Pancreas
d. Spleen

Answer 15

d. Spleen