Parasitology Flashcards by alvin salazar

most common causeof pyogenic liver abscess

e. coli

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most common extra intestinal site of amoebiasis

liver

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flask-like primary ulcer, crateriform appearance, anchovy paste liver abscess

amoebiasis

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which lobe is more likely to be involve in amoebic liver abscess

right lobe

4x more likely than left because it receives bulk of the venous drainage from the right colon

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Treatment of choice for amoebiasis

Metronidazole
(750mg TIDpo 5-10 days)
Lodoquinol
(650mg TIDpo for 20days)

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Infection contracted after swimming and diving in warm, still waters of lakes, ponds or backwater bays

Naegleria fowleri
(entry: nose)

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causative agent for Primary amoebic meningo encephalitis(PAM)

Naegleria fowleri

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Brain-eating amoeba,

free- living

acanthamoeba

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drug of choice for acanthamoeba infection

amphotericin B

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symmetrically pear shaped, rounded anteriorly and pointed posteriorly, (+)sucking discs

Giardia Lamblia

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Falling leaf motility, smiling face with prominent eyes or “owls eye”

Giardia Lamblia

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Giardia Lamblia diagnosis

fecalysis,
duodenal aspirate (organism lives in the duodenum)

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Giardia Lamblia DOC

Metronidazole

Quinacrine HCL doc

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vaginitis, urethritis,

only trophozoite stage is found, Shorter undulating membrane

trichomonas vaginalis

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Jerky tumbling motility,seen on “fresh mount”,

trichomonas vaginalis

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trichomonas vaginalis DOC

metronidazole

250mg TID x 5-7 days

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strawberry cervix

trichomonas vaginalis

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Longest of the tapeworms, fish tapeworm, gravid uterus forms a rosette appearance, oval eggs with lid-like opening(operculum)

Diphyllobothrium Latum

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Can cause B12 deficiency, megaloblastic anemia

Diphyllobothrium Latum

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Unilocular Hydatid cyst,

dogs/sheep (definitive host)

Echinococcus Granulosus

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most common siste of dogtapeworm hydatid cyst,

liver

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dogtapeworm hydatid cyst on rupture causes what?

anaphylactic shock

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dogtapeworm diagnostic test?

Casoni skin test

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MC cause of spleenic cyst

Echinococcus Granulosus

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associated with ingestion of raw or undercooked fish

Clonorchis sinensis

aka. Chinese Liver Fluke

Clonorchis sinensis

carinoma from Clonorchis sinensis

Cholangiocarcinoma

DOC for Clonorchis sinensis

Praziquantel

old fashioned electric bulb appearance of egg

Clonorchis sinensis

tumor on the bifurcation of the hepatic duct, also associated with Clonorchis sinensis

Klatskin tumor

aka Cat liver fluke, also causes cholangio CA

opistorchis felineus

Scariest intestinal worm, wandering behavior

Ascaris Lumbricoides

Hurt lung-migration of Ascaris Lumbricoides

Loffler's syndrome

Ascaris Lumbricoides DOC

Pyrantel pamoate, mebendazole

Gravid female adult migrates to peri anal skin to deposit embryonated eggs, nocturnal pruritus ani

Enterobius Vermicularis

Diagnostics for Enterobius Vermicularis

Scotch tape, cellophane anal swab

aka anal pinworm, sitworm, threadworm

Enterobius Vermicularis

smallest nematode, has both a free living cycle and a parasitic cycle

Strongyloides Stercoralis

Aka. thread worm

Strongyloides Stercoralis

Strongyloides Stercoralis DOC

Albendazole, thiabendazole

Dwarf threadworm

Strongyloides Stercoralis

Strongyloides Stercoralis infective stage | diagnostic stage

filariform larva | rhabditiform larva

Strongyloides Stercoralis culture medium

Harada-Mori culture technique

trichinosis, intestinal nematode that encyst in tissue, assoc. with eating raw or undercooked meat

Trichinella spiralis

Trichinella spiralis dx

muscle biopsy | bachman intradermal test

whipworm, causes muscle inflammation and periorbital edema,

Trichuris Trichiura

Trichuris Trichiura DX

Bentonite flocculation test | serologic test

Trichuris Trichiura DOC

Thiabendazole

Trichuris Trichiura final habitat

cecum and ascending colon

Trichuris Trichiura prominent clinical manifestation

rectal prolapse

japanese lantern, football shaped appearance, bipolar mucus plug in microscopy,

Trichuris Trichiura

Old world hookworm, (+)teeth, DFS, (+)rhabditiform and filariform larva

Ancylostoma duodenela

New world hookworm, (+)cutting plates, DFS, (+)rhabditiform and filariform larva

Necator Americanus

Tissue nematodes, pointed tail contains nuclei, deerfly,mangofly

Loa Loa

Loa Loa hypersensitivity reaction causes transient localized swelling and edema in the subcutaneous tissue

Calabar swelling

Loa Loa DOC

Diethylcarbamazine

Black river blindness disease

Onchocerca volvulus

Onchocerca volvulus vector

black fly

Onchocerca volvulus DOC

Ivermectin, (affects microfiliaria not adult worms) | Suramin (for adult worms and with eye disease)

a skin reaction that occurs in humans when the microfilariae of onchocerca volvulus in cutaneous sites are killed by the administration of DEC

Mazzoti reaction

Causes Filariasis, elephantiasis, pointed tail free of nuclei

Wuchereria Bancrofti

Wuchereria Bancrofti DX

Thick blood smear | ( taken at night displays microfilaria)

Wuchereria Bancrofti DOC

Diethylcarbamazine | effective against microfilaria

Causes Malayan Lymphatic filariasis

Brugia Malayi

Brugia Malayi elephantiasis is localized where?

below knee

major cause of visceral larva migrans (2)

Toxocara canis (defenitive host dog) Toxocara catis (defenitive host cat)

Brugia Malayi DOC

DEC

dog hookworm'/cat hookworm

Ancylostoma caninum/braziliense

Cutaneous lava migrans

Ancylostoma braziliense

cat/dog hookworm characteristic inflammatory lesion

creeping reaction

cat/dog hookworm DOC

Thiabendazole

Ingestion through contaminated fish, | peanut shell appearance on microscopy

Capillaria Philippinensis

Bilharzia, Snail fever

Schistosomiasis

Schistosomiasis: | large lateral spine

S. mansoni

Schistosomiasis: | japonicum

very small lateral spine

Schistosomiasis: haematobium

terminal spine

Schistosomiasis intermediate hosts

oncomelania quadriasi

Schistosomiasis definitive hosts

human

Schistosomiasis Parasites approach sexual maturity and commencement of oviposition causes this reaction

Katayama fever/ acute schistosomiasis

swimmers itch

Schistosomiasis | MC mansoni, japonicum

Schistosomiasis japonicum diagnosis: feces? serum?

feces: Kato-Katz serum: COPT (Circum oval precipitin test)

Schistosomiasis DOC

Praziquantel

Pipestem fiborsis

Schistosomiasis

causes urinary schistosomiasis

Schistosomia hematobium | predispose to squamous cell CA

Disease: Chaga's disease Vector:reduvid /kissing bug Infective stage: trypomastigote

trypanosoma cruzi

Disease: african sleeping sickeness Vector: tsetse fly/glossina Infective stage: trypomastigote

trypanosoma gambiense | trypanosoma rhodisiense

Early sign of trypanosoma infection

Chagoma (Romana's sign)

causes Kala-azar or visceral Leishmaniasis

Leishmania Donovani

Dum-dum fever

Leishmania

Causes mucocutaneous leishmaniasis

Leishmania braziliensis

Vector of Leishmaniasis

Sandfly

Infective stage of Leishmaniasis

Promastigote

Leishmaniasis DOC

Stibogluconate Na

Parasitology Flashcards

(93 cards)