intestinal flukes Flashcards
fasciopsiaais caused by
f. buski - giant liver fluke
fascilopsis lives
small intestine of pigs and humans
definite host fasciolpsis
humans stand pigs (pigs also serve as reservoir host but pigs are the most coomn definitive
intermediate hosts fascicle
- segmentia snails
2. aquatic plants (encystment occurs)
IF fasciolopsi
metacercariae
moa fasciolops
humans eat aquatic plants where they ingest the metacercariaae
diagnosis fasciolops
eggs in faeces /worms
tx fasciolops
praziquantel
introduction for intestinal flukes
These pathogens are common throughout Asia (particularly SE Asia), where their prevalence may reach 30% in certain populations. Children are more heavily infected and prone to symptoms.
names of intestinal flukes
fasciolopsis buski
heterophys
metogonimus
eggs of buski
are percolated and similar to the eggs of f.hepatica . eggs are laid in the lumen of about 25,000 per days
signs of buski
initial symptoms are diarrhoea and abdominal pain
larvae that attach to the duodenal and jejanul mucosa cause inflammation and ulceration
protein losing enteropathy - edema and ascites
prophylaxis of fascioplopsias
control of snails
prevention of contamination of water with human and pig faces
washing the plant
time between harvesting the plant and consumption to be as prolonged as possible because dryness can decrease , cause the IF TO DIE or boil it
heterophyosis hosts
def: man, and other animals , cats dogs and foxes BUT NOT PIGS LIKE THE OTHERS
intermediate: snail + fish (encystment occurs)
moa for heterophyosis
humans eat fish which is raw, undercooked
IF for heterophysosi
metacercaria In the fish
treatment for heterophysis
praziquantel
symptoms for hetrophysis
usual abdominal pain and diarrhoea, occasionally the eggs can be carrier to ectopic sites such as brain and spinal cord, and induce granulomas and rarely its the worms themselves that embolism
which is the smallest trematode parasite of man
heterophyes
hosts of metagnomius
definite: humans, pigs , dogs cats
intermediat : fresh water snail, and fish
tx for metagonmius
praziquantel
diagnosis in general of intestinal flukes
faecal examination for eggs. Differentiation between Fasciola hepatica and F. buski is often difficult. Similarly, intestinal flukes’ eggs closely resemble those of Clonorchis and Opisthorchis. Recovery of adult worms from post-treatment faeces allows a definitive diagnosis, although in the case of the heterophyids this is difficult owing to their small size. Extraintestinal cases of heterophyosis are also difficult to diagnose - they are often only revealed during surgery or autopsy.
how to tell the difference between metagoonimus and hetrophysosi
both have ventral suckers but metagonimus is more laterally displaced and also does not have the 3rd genital sucker