GI Disorders Diagnostic Test

Question 1

Diarrheal Disease: isotonic stool, persist during fasting

Answer 1

Secretory Diarrhea

Question 2

Diarrheal Disease: occur w/ lactase deficiency, d/t osmotic forces exerted by unabsorbed luminal solutes, abates w/ fasting

Answer 2

Osmotic Diarrhea

Question 3

Diarrheal Disease: inadequate nutrient absorption, associated w/ steatorrhea, relieved by fasting

Answer 3

Malabsorbtive Diarrhea

Question 4

Diarrheal Disease: d/t inflammatory disease, purulent, bloody stools, continue during fasting

Answer 4

Exudative Diarrhea

Question 5

important enzymes in breakdown of disaccharide in SI

Answer 5

lactase-phlorizin hydrolase, sucrase isomaltase, maltase-glucoamylase

Question 6

Secondary disaccharide deficiency can be caused by what drugs

Answer 6

neomycin, kanamycin, methrotrexate

Question 7

Most important cause of nosocomial diarrhea (antibiotic-associated diarrhea)

Answer 7

Clostridium difficile

Question 8

Clostridium difficile characteristic

Answer 8

gram positive, spore-forming, anaerobic bacillus

Question 9

Clinical Manifestation of antibiotic-associated diarrhea

Answer 9

mild, watery diarrhea; pseudomembranous colitis; toxic megacolon; lead to colonic perforation & peritonitis

Question 10

Patient presentation of antibiotic-associated diarrhea

Answer 10

watery diarrhea, abdominal pain/cramping, fever, malaise, occult GI bleeding

Question 11

Irrespective of the cause, what is the most common feature of malabsorption syndrome

Answer 11

diarrhea (especially steatorrhea)

Question 12

Screening Test for Steatorrhea

Answer 12

Micro exam for fat globules & serum carotenoid determination

Question 13

Major precursor of Vitamin A in human

Answer 13

Carotenoid

Question 14

What might cause a low level of serum carotenoid

Answer 14

Liver disease & high fever

Question 15

Elevated serum carotenoid are seen in patients

Answer 15

Hypothyroidism, diabetes, hyperlipidemia, excessive intake of carotene

Question 16

Used in the diagnosis of celiac disease (gluten-sensitive enteropathy)

Answer 16

cellobiose-mannitol sugar permeability test & lactulose-mannitol test

Question 17

Used to asses function of terminal ileum, for Vitamin B12 absorption

Answer 17

Schilling test

Question 18

Fecal elactase should only be performed in what kind of stool

Answer 18

formed stool

Question 19

Munchausen’s syndrome by proxy

Answer 19

adults administered laxatives surreptitiously to young children

Question 20

What are colonic stimulants that are abused

Answer 20

Senna, aloin, cascara