Intestine Flashcards
What is characteristic for Upper GI bleeding on an occult blood test?
Melena
What does a Fecal Occult Blood test measure?
pseudoperoxidase activity of hemoglobin
What causes a false positive on a fecal occult blood test?
Myoglobin/hemoglobin in meats
Fresh vegetables containing peroxidases
What causes a false negative on a fecal occult blood test?
High vitamin c intake
High fluid content that dilutes blood
When do you see neutrophils in a fecal cytology?
with colonic inflammation
When do you see eosinophils in a fecal cytology?
eosinophilic colitis
Should the microflora be heterogenous or homogenous?
heterogenous
What does a homogenous microflora indicate?
Bacterial overgrowth
What spore forms look like a safety pin?
Clostridium
What spore forms look like a gull-wing?
Campylobacter
What are the endocrine functions of the Pancreas?
Insulin and glucagon secretion
Glucose secretion
What are the exocrine functions of the Pancreas?
Synthesis/secretion of digestive enzymes
Trypsinogen, chymotrypsinogen, proelastase, procarboxypeptidases, lipase and amylase
What does exocrine pancreatic insufficiency (EPI) result in?
inadequate food digestion
What are the clinical signs for Exocrine Pancreatic Insufficency?
Weight loss
Poorly formed stools
Increased fecal volume
What is mechanism for Pancreatic acinar atrophy?
immune mediated destruction
TLI
Trypsin-like Immunoreactivity
TLI use
specific detection of both trypsin and trypsinogen
sensitive and specfic test for EPI
Where is Folate absorbed?
Proximal Small Intestine (jejunum)
Where is B12 absorbed?
Distal Small Intestine (ileum)
What does B12 do?
Binds intrinsic factor (IF)
Decrease in both Folate and B12
Generalized Malabsorption
Decreased Folate
Normal B12
Proximal SI defect
Folate normal
decreased B12
Distal SI defect
What is needed for B12 absorption?
Intrinsic Factor
What happens to IF with EPI?
Decreased Intrinsic Factor release
Decreased B12
What is common in dogs with EPI?
Bacterial Overgrowth
What can Intestinal bacteria do?
Synthesize Folate
Bind B12 and prevent absorption
Causing bacterial overgrowth