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Flashcards in GI and Stool Deck (21)
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1

proper digestion revolves around what 3 phases of function

oral - chewing, hydrating, enzymatic

gastric - hydrating, enzymatic, denaturing

biliary/pancreatic - enzymatic*, buffering, emulsifcation

2

oral phase produces what enzyme

what is its function

salivary amylase

CHO breakdown

3

gastric phase produce what enzyme(s)

what is there function

HCL and pepsin

denaturing

4

biliary/pancreatic phases produces what enzymes

HCO3
pancreatic amylase
lipase
proteases
bile

5

gastrin is produced by what cells

gastrin is produced in response to what

G cells in the stomach

produced in response to stretching, chewing, and cephalic phase of digestion

6

what occurs when gastrin is produced

causes HCL production

also causes pepsinogen secretion

7

what are the 3 types of superficial gastritis

simple gastritis
atrophic gastritis
gastric atrophy

8

what are the gastrin levels in each type of superficial gastritis

simple gastritis - normal gastrin

atrophic gastritis - normal or slight elevation

gastric atrophy - high gastrin and achlorhydric

9

what are the 3 types of hyperplastic gastropathy

ZE syndrome
hypersecretory gastropathy
menetriers disease

10

what are the gastrin levels in each type of hyperplastic gastropathy

ZE syndrome - extreme hyperacidity

hypersecretory gastropathy - normal gasstrin but increased amounts of acid

menetriers disease - elevated gastrin but decreased amounts of acid

11

anti H pylori antibodies are elevated when

IgM - elevated 3-4 weeks and declines in 2-3 months after tx

IgA - elevates 2 months and declines in 3-4 weeks

IgG - elevated 2 months and stays elevated for 1 year after tx

12

stool tests are used to evaluate and determine function of bowel by checking for...

bleeding, infection, infestations, inflammation, malabsorption

13

what is the cardinal sign if there is inflamamtion in the bowel

if chronic inflammation is present what is the result

diarrhea

malabsorption

14

feceal fat confirms the diagnosis of what

steatorrhea

15

how is fecal fat determined

what is the level that is considered healthy

3 day collection to determine 24 hour output of fat - patient must eat 100 grams of fat for 3 days before the test and then continue eating 100 grams during the 3 day testing period

less than 6 grams

16

what is stool culture used to diagnose

culture and sensitivity

salmonella
shigella
campylobacter
yersinia
E coli
clostridium
staphylococcus

17

what is stool O & P used for

ova and parasites

hookworms
tapeworms
protozoa
cryptosporidium (seen immune compromised patients)

18

what is stool occult blood test used to determine

used to determine bleeds that are slow or high up in the GI tract

19

what can cause false positives on stool occult blood test

false positive (cause bleeding)

iron
NSAIDS
acetyl salicylic acid ASA
steroids

20

what can cause false negatives on stool occult blood test

false negative (no bleeding)

vitamin C

21

when performing a stool occult blood test what must the patient refrain from

avoid eating red meat for 3 days

avoid supplements and OTCs