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Revision
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Complete:a) The eggs of Enterobius vermicularis are best obtained by ...........................
b) Egg of Ascaris lumbricoides hatch in ..........,while eggs of hookworms hatchin......................
c) Ascaris lumbricoides has ............. oesophagus
d) Habitat of Ascaris lumbricoides is .............,while habitat ofEnterobius vermicularis
...............
e) Person can be infected by Enterobius vermicularis parasite through..............,
...............,. ............,. ...................
f) The main character of adult Ancylostoma duodenale............
g) Scotch adhesivetapeswab is used for direct diagnosisof...............
h) Appendicitisis a complication of ............................
i) The technique used for isolation and the detection of hook worm and
Strongyloideslarvaein stoolorsoilisknown as ............
j) Consumption of fish may lead toinfection with....................................
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Indicate true statements with ( T ) & false ones with ( F ):
Eggs of Hookworms are infective to man.
eggs of Enterobius can be found in stool and urine.
Appendicitis may be a complication of Enterobius vermicularis
Embryonated eggistheinfectivestageofAscaris
Necatoriasis is more sever than ancylostomiasis
Strongyloides stercoralis female is a viviparous worm.
Filariform larva is the infective stage of Trichuris trichura
Skin penetration is the mode of infection in Ancylostoma duodenale
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Givethereason(s) for
Enterobiasisismore dangerousin child than in child
Repetition oftreatment afterthreeweeksisessentialin entrobiasis
FemaleEntrobius depositeggson theskin near anus
occuranceof Iron defeciency anemia in ancylostomiasis
Anaemia in trichuriasis.
Persistentinfection of Strongyloidesstercoralisin patientslivingin non endemic areas.
Chronicity of Strongyloidesstercoralisinfection
Hyper-infection syndromein strongyloidiasis
Ascarisshould betreated before any surgicaloperation.
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How can you solvetheseproblemsHow can you solvetheseproblems
1) Treatmentof casemixed infection withAscaris and Hymenolepis nana
Illustratewith diagrams
InfectivestageofEnterobius vermicularis
Mention the disadvantagesofthe following:Mention the disadvantagesofthe following:
Stool analysis in diagnosis ofEnterobius vermicularis
InfectivestageofStrongyloides stercoralis
The diagnostic stagesofAncylostoma duodenale
Thelife cycleofT. Trichura
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Choose the correct answer(s)
Allofthese are characterofEggofAscarislumbricoidesexcept
A- Immature b- colorless
C- Yellowish brownish d- mammilated
Allofthese are characterofrhabditiform larva of ancylostoma except
a- Pointed tail b- short buccal cavity
c-Rhabdtiform oesphagus d- 150-200u
Person can beinfected by Ancylostoma through
A. Pentration ofskin by rhabtidiform larva
B. Ing estion of filariform larva
C. Pentration ofskin by filariform larva
Loefflerssyndromeoccurin :
Enterobius Ancylostoma Trichuris trichiura
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The followingparasites cause appendicitisexcept:
a- E. vermicularis. b- A. lumbricoides.
c- T. trichiura. d- H. heterophyes.
The followingparasitesmay be autoinfectiveexcept:
a)- Strongyloidesstercoralis. b- Entrobiusvermicularis.
c)_ Capillaria philippinenses d)- Ancylostoma doudenale.
The diagnostic stagesin caseofsevere Intestinal capillariasismay be:
Theeggs.Thelarvae.
The adultworms.
Allthe above.
Larva currensis a lineareruption caused by thelarvaeof:
a-Strongyloidesstercoralis.b-Ancylostoma duodenale.
c-Ancylostoma brasilienses.
d-Toxoplasma gondii
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The Direct diagnosisofTrichuris trichiura ismade:
a)By observingeggsin the faeces.
b)By observinglarvaein the faeces.
c)By antigen detection in blood.
d)By observingencysted larvaein muscle biopsy
InfectivestageofAncylostoma duodenaleis:
a. Rhabditiformlarva b. Filariformlarva
c. unsheathed filariformlarva d. Second stagelarva
Skin penetration isthemodeofinfection in:
A-Ancylostoma duodenale b. Taenia saginata
c. Hydatid disease
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Nameparasites Which:Nameparasites Which:
Can betransmitted by autoinfection
May cause mal-absorption.
Can betransmitted by soil
transmitted toman by eatingrawor undercooked fish
transmitted toman by eating green salad.
Can be diagnosed by urineexamination
May causepernicious anaemia
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Case (1)
A 30-year-old, gardener complained of recurrent attacks of fever, cough and dyspnea,
followed by diarrhea and epigastric pain. Laboratory investigations revealed blood
eosinophilia and rhabditiform larvae in stool samples.
What is the suspected parasitic infection?
Mention mode of transmission.
Enumerate other 3 parasites causing fever
Case (2)
A mother presented with her child, 9-year old, suffering from perianal itching specially
at night, insomnia and nocturnal enuresis. The mother gave a history that her child had
poor appetite, weight loss abdominal pain nausea and vomiting. Stool examination
revealed larvae
a)- What is the possible diagnosis of this case
b)- How would you proceed to confirm your diagnosis
c)- What the treatment of this case.
d)- How could you protect other member of this family from getting
infection.
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Slides & data show revision
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Rectal prolapse due to trichuriasis
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Egg ofcapillaria philippinensis
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Ascaris lumbricoides ova
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