New Tutorial Revision of Intestinal Nematodes

8/3/2019 New Tutorial Revision of Intestinal Nematodes

1/24

Revision


2/24

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....................................


3/24

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


4/24

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.


5/24

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


6/24

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


7/24

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


8/24

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


9/24

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


10/24

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.


11/24

Slides & data show revision


12/24


13/24

Rectal prolapse due to trichuriasis


14/24

Egg ofcapillaria philippinensis


15/24


16/24


17/24


18/24


19/24

Ascaris lumbricoides ova


20/24


21/24


22/24


23/24


24/24

Documents

New Tutorial Revision of Intestinal Nematodes