micro final Flashcards
how to ddx small cell lymphoma from normal lymphocytes
flow cytometry PARR
what is the normal size of a small lymphocyte
1-1.5x a red cell
when suspecting lymphoma what is best to run
best to run both flow and parr
what is used for phenotyping of lymphoid neoplasia
flow
acute diarrhea in a watery young dog
protozoa. likely giardia
what is the size of giardia
12 ish micrometers
what does a fecal float detect for giardia
cysts
what test detects trophozoites of giardia
direct smear. they die fast. fresh feces is a must
when to test a dog for giardia
symptomatic dogs with diarrhea
treatment for giardia
fenbendazole. or metronidazole
do we need a definitive diagnosis for salmonella
yes. zoonotic and may chronically shed
what signs support salmonella in a horse
neutropenia, l shift, bands, fever
what is the test of choice for salmonella in a horse
salmonella PCR and culture
do you need antimicrobial susceptibility testing for salmonella positive
no. controversial
what is the treatment for enteric salmonellosis
does not change the course of colitis. will prolong shedding of the bacteria.
dont give it. give polymixin B and banamine
how is equine salmonellosis intermittently shedding
persists intracellularly in enterocytes and macrophages
how do you clear a salmonella positive animal
5 negative cultures or isolation for 30 days after cessation of clinical signs
how do we diagnose johnes disease
pcr and serology
what test would you choose for a fecal sample for johnes disease
PCR
if we saw a johnes positive fecal PCR but a serum elisa negative. how could that be?
the elisa has poor sensitivity. trust the PCR
what is unique about the johnes serology
there is a flux in antibodies so the timing has to be perfect.
how is johnes transmitted
fecal oral to babies. separate offspring at birth
what type of infection does johnes disease cause
granulomatous inflammation. malabsorptive diarrhea, poor bcs, and hypoproteinemia
can cattle get sheep johnes?
yes and visa versa
