Why Parasitic Helminth Disease Why Stool Tests?
The stool test directly in the stool is a basic and essential method for finding parasites:
Unicellular: types of amoeba, intestinal flagella, intestinal coccidia, Balantidium coli hairy.
Worms: roundworms, hookworms, hair worms, pinworms, strongyloidiasis.
Flukes: tapeworms (liver and intestines), bandage, tapeworm
Reasons for stool examination for parasites:
Microscopic examination of stool samples for helminth eggs
The presence of clinical symptoms is more or less obvious: diarrhea or constipation, abdominal pain, epigastric pain, bloating, nausea, anal pruritus, in a stool that has a grossly suggestive shape. organism.
The presence of highly calculated white blood cells is associated with pulmonary symptoms
Basic investigative tests. Prepare and guide patients before the test
The test portion is placed in a clean, dry vial without aseptic.
Feces must not be mixed with urine or other substances
If the patient is fertilized, a small dose of laxative may be given (magnesium sulfate 5g mixed in a little water, taken the night before, the next morning to take stool for testing).
Worms, flukes are not continuous, the single-celled cysts are not routinely discharged daily. Therefore, once a negative test has yet to show a true negative value, it needs to be tested for several days in a row. In fact, if prepared carefully, two or two tests are enough for the competent laboratory to determine the results.
Test results must contain the following elements:
In general: bloody stool of amoeba, foamy, yellow-gray stool of Giardia, the parasite can be seen with the naked eye such as tapeworm burning, pinworm,
Micro: digestive condition of starch, meat, bacteria, fungi, red blood cells, white blood cells, epithelial cells, etc. Parasites found: what kind, how much, by what technique ( direct examination, enrichment ..
In addition to the usual rich techniques applied to eggs or cysts, there are two specific techniques:
The Baermann technique uses a large amount of manure, based on the characteristic of high-temperature parasites, so warm water is used to attract them to centrifuge, find them in the residue. This rich technique is very effective with strongyloidiasis, as the larvae do not have much in feces.
As for pinworms, Graham's technique, due to the characteristics of the worm's birth at night and concentrated in the wrinkles around the anus, there are many worm eggs To find pinworm eggs, you must use clear tape, print on the folds of the anus to attach to the eggs and then microscope.
AIDS patients will experience frequent digestive disorders. A baseline stool test for all of these subjects may be required or when acute or chronic diarrhea is present.
For people with immunodeficiency, the following parasites should be noted: Crytosporidium sp, Microsporidia sp, Strongyloidiasis.
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