Term
| what does schisto and soma mean? |
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Definition
Schisto = split
Soma = body |
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Term
| donald trumps wife went to tokyo and got cancer |
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Definition
| Oncomelania Spp (snail host) for Schistosoma japonicum |
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Term
| you bully! you punched me and gave me a haematoma |
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Definition
| Bullinus spp (snail host) for S haematobium |
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Term
Schistosoma mansoni snail host?
The man rammed into me. |
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Definition
Biophalaria spp
looks like rams head. |
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Term
| oval egg with spine off side - which schistosoma egg? |
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Definition
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Term
| Oval egg with central spin. which schistosoma egg? |
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Definition
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Term
| Circular egg with non prominent spine likely to be which schistosoma egg? |
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Definition
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Term
| which 2 schistosoma are intestinal forms? |
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Definition
| S mansoni and S japonicum |
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Term
| Which schistosoma is urogenital form? |
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Definition
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Term
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Definition
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Term
| Control of schistosomiasis? |
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Definition
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Term
| which schistosoma is most widespread? |
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Definition
| S mansoni - It is oval and has charecteristic off centre spine. |
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Term
| life cycle schistosomiasis? |
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Definition
| infected human excretes eggs in stool > hatch to miricidia > infect snail host and reproduce to give cercaria > infect humans when swimming > develop into adult worms and pair up. |
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Term
| when might you get symptoms of katayama fever? |
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Definition
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Term
| association of schistosomiasis and HIV. Relevance of CAA Ag? |
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Definition
| The higher the Ag number, the more likely the patient is also infected with HIV |
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Term
where would you find s mansoni eggs?
snail host?
rx? |
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Definition
in stools
biomphalaria spp
praziquantel/Oxamniquine |
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Term
S haematobium eggs are found where?
SNail host?
Rx? |
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Definition
urine
bullinus spp
Praziquantel |
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Term
S japonicum eggs found where?
SNail host
Rx? |
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Definition
Stools
onchomelania
praziquantel |
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Term
| why is it difficult to control S japonicum infection? |
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Definition
| it can infect 40 mammalian hosts and important in zoonotic transmission. |
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Term
| symmers pipe stem fibrosis is found in which schistosoma infection? |
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Definition
| S mansoni and liver fibrosis. |
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Term
| circulating cathodic antigen used to detect which species of schistosomiasis? |
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Definition
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Term
| pathology of ascaris related to s.... or n... of worms |
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Definition
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Term
| light infections with ascaris are often asymptomatic. when is it classed as severe infection? |
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Definition
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Term
| describe pulmonary syndrome with ascaris infection |
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Definition
caused by worm migration to lungs
fever cough, wheezing
high eosinophills
Loffler syndrome
Symptoms usually resolve spontaneously. |
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Term
| in lung migratory phase of ascaris infection where can larvae be observed? |
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Definition
in sputum
there is also high eosinophillia |
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Term
| in the GI phase of ascaris infection where can larvae be observed? |
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Definition
| stool microscopy for eggs |
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Term
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Definition
| Albendazol or mebendazole |
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Term
| which egg fertile or unfertile ascaris egg has a wiggly membrane |
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Definition
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Term
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Definition
Ancylostoma duodenales
Necator americanus |
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Term
| pathology of hookworm infection? |
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Definition
most infections are asymptomatic
there is gradually worsening anaemia |
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Term
| describe mechanism of gradually worsening aneamia in hookworm infection? |
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Definition
attachment of worm to intestinal muscosa can rupture small vessels
adult worms ingest blood by active suction
they secrete anticoaguants
blood loss up to 0.15ml/day and worm. |
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Term
| buccal cavity in hookworm V strongyloids |
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Definition
hookworm = long buccal cavity (to suck blood)
Strongyloides = short buccal cavity |
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Term
| can eggs of ancylostoma and necator be differentiated? |
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Definition
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Term
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Definition
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Term
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Definition
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Term
| heavy whipworm infection can cause what to the rectum? |
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Definition
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Term
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Definition
50-55um x 20-25um
brown
barrel shaped
polar plugs
shell consists of 3 layers. |
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Term
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Definition
| Mebedazole more effective than albendazole |
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Term
| larva currens are pathognomonic of which worm infection |
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Definition
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Term
| describe hyperinfection and strongyloides |
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Definition
affects people who are immunosuppressed
Disseminated strongyloidiasis |
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Term
|
Definition
Ivermectin most effective
Albendazole and mebendazole are alternatives. |
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Term
| control for strongyloidiasis? |
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Definition
improved wash
wear shoes
MDA
bi-annual where prevalence is 50% > |
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Term
| what part of body does ascaris worm inhabit? |
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Definition
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Term
| which worm is responsible for greatest cause of worm infections worldwide? |
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Definition
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Term
| which soil transmitted helminths ass through the lungs? |
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Definition
Ascaris lumbricoides
Necator americanus |
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Term
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Definition
Faecal-oral transmission.
Larvae penetrate muscosa and go to lungs
coughed up and swallowed and become adults in small intestine
live for 1-2 years and make eggs daily |
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Term
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Definition
faecal-oral spread
no lung migration
larvae stay in small intestine and mature into adults
hatch thousands egss for several years |
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Term
| which worm can cause dysentery and rectal prolapse in heavy infections? |
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Definition
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Term
| in whipworm and pregnancy which drug is preferred? |
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Definition
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Term
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Definition
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Term
| how can you tell between hookworm and strongyloides on a stool sample |
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Definition
| Hookworms aren't usually found on a stool sample (unless there has been a delay in processing the sample) |
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Term
| features of ascaris worms |
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Definition
Female larger than males
Males have curved tail
Females have straight tail
Adult worms have 3 lips |
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Term
| when larvae in a stool sample is shown it is almost certainly..... |
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Definition
| a strongyloides stercoralis L1 larvae |
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Term
| difference between strongyloid and hookworm L3 larvae? |
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Definition
Hookworm = pointed tail
Strongyloides = forkshaped tail |
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Term
| out of a duodenale and n americanus which consumes more blood? |
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Definition
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Term
| what syndrome may follow A duodenale larvae ingestion? |
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Definition
Wakana syndrome
nausea vomiting pharyngeal irritation dyspnoea, hoarseness |
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Term
| describe autoinfection with strongyloidiaiss |
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Definition
| rhabtidiform larvae released into colon from eggs. some change into infective filiform stage. penetrate bowel walls > lungs >swallowed > small intestines > become adults |
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Term
|
Definition
Ivermectin most effective
albendazole and tiabendazole also available |
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