GI

Question 1

Giardia lamblia treatment

Answer 1

metronidazole

Question 2

Entamoeba histolytica treatment

Answer 2

metronidazole

Question 3

chronic diarrhea defined as

Answer 3

longer than 4 weeks

Question 4

chronic diarrhea - if initial colonoscopy is nondiagnostic, what is next step?

Answer 4

48 to 72 hour stool collection w/ analysis of fat content

Question 5

pts w/ steatorrhea should undergo evaluation for what?

Answer 5

small-bowel malabsorption disorders (ie celiac dz), bacterial overgrowth, & pancreatic insufficiency

Question 6

what level of fat exertion is diagnostic for steatorrhea

Answer 6

> 14g/d

Question 7

osmotic gap equation (stool)

Answer 7

290 - (2x[Na+K])

Question 8

osmotic gap > 100 indicated what

Answer 8

osmotic diarrhea

Question 9

osmotic gap <50 indicates what

Answer 9

secretory diarrhea

Question 10

stool osmolarity of <250 suggests what

Answer 10

factitious diarrhea (chronic laxative abuse or adding water to stool)

Question 11

osmotic diarrhea is most commonly caused by

Answer 11

lactase deficiency

Question 12

treatment for bacterial overgrowth

Answer 12

order empiric trial of antibx and hydrogen breath test

Question 13

treatment for short-bowel syndrome

Answer 13

replace nutrient and electrolyte deficiencies

Question 14

treatment for short-bowel syndrome w/ bile acid enteropathy

Answer 14

cholestyramine

Question 15

Whipple disease treatment

Answer 15

antibiotics for 12 months

Question 16

diagnose Whipple disease

Answer 16

small bowel biopsy and PCR for Tropheryma whippelii

Question 17

travel to India or Puerto Rico, malabsorption, wt loss, malaise, folate/vit B12 def, steatorrhea

Answer 17

tropical sprue

Question 18

tropical sprue dx

Answer 18

small bowel biopsy

Question 19

tropical sprue treatment

Answer 19

sulfonamide or tetracycline and folic acid