Exam 1 Flashcards
(234 cards)
What are indications for a fecal analysis
Screening for endoparasites, explaining clinical signs, and diagnosing/treating all parasites present
What are the RVT’s role in fecal analysis
Evaluate the sample, report results, evaluate and fill prescriptions, and educate client
What are reasons for a fecal analysis resulting in a false negative
Testing during the prepatent period, host infected but there is a low parasite burden, undetectable stage of life cycle, low sensitivity test selected, improper procedure utilized, and the sample integrity is compromised
What are diagnostic tests to analyze fecal matter
Direct smear, fecal flotation, fecal cytology, fecal culture, occult blood, sedimentation, and other tests such as snap tests
What can be prevented when proper procedure is used when preparing a fecal
Protection against zoonoses, hygiene, sanitation of the lab/equipment, integrity of results, and record keeping
What are the 2 ways fecal matter can be properly stored to stop the life cycle prior to a fecal analysis
Refrigeration vs formalin
How can fecal matter be collected
Free catch, gloved lubricated finger, and fecal loop for a small sample
How much feces is required for a fecal analysis
5g
What info should be labeled on a fecal sample
Owner name, animal name, species, and date/time collected
What visual aspects should be noted of a fecal sample
Consistency using a fecal score, color, blood, mucus, and parasites
What issues/things can you see in a fecal sample upon gross examination
Presence of parasites, blood, and mucus
What is a fecal direct smear
Screening for motile protozoans is a fast, easy, minimal prep test that requires a small fecal sample, and there is a large amount of debris
What are common errors seen w/ fecal direct smear
Smear is too thick, incorrectly scanned, improper microscope lighting
What is a fecal flotation good for evaluating
A low parasite burden
How does a fecal flotation utilize specific gravity
Because the only things that will float up to the microscope slide if its specific gravity is equal to that of water
What are common solutions used for fecal flotation
Salt or sugar, sodium nitrate, sugar solution, and zinc sulfate
Why is zinc sulfate a unique solution for fecal flotation
Because it allows for the recovery of protozoan organisms
How is a fecal direct or flotation used for a microscopic examination
To evaluate for parasitic material in various life stages such as eggs, oocysts, cysts, larvae
What are things to keep in mind when looking at fecal directs or flotation under a microscope
Geography, species of patient, and morphological characteristics of things found
What are common places for endoparasites to invade their host
Intestine, lungs, RBC, WBC, platelets, liver, and kidneys
What 3 things to ectoparasites tend to affect
Skin, hair, and ears
What is a mechanical vector
When a pathogen is carried on the surface of the vector such as things that penetrate the body and flies
What are biological vectors
When a pathogen is carried w/in the body of the vector such as ticks or mosquitos
What is horizontal transmission methods of endoparasites
Ingestion (fecal-oral and transmammary) and transcutaneous