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ASS Microbiology > Parasitology > Flashcards

Parasitology Flashcards

1
Q

most common causeof pyogenic liver abscess

A

e. coli

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2
Q

most common extra intestinal site of amoebiasis

A

liver

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3
Q

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

A

amoebiasis

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4
Q

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

A

right lobe

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

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5
Q

Treatment of choice for amoebiasis

A

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

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6
Q

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

A 
Naegleria fowleri
(entry: nose)
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7
Q

causative agent for Primary amoebic meningo encephalitis(PAM)

A

Naegleria fowleri

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8
Q

Brain-eating amoeba,

free- living

A

acanthamoeba

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9
Q

drug of choice for acanthamoeba infection

A

amphotericin B

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10
Q

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

A

Giardia Lamblia

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11
Q

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

A

Giardia Lamblia

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12
Q

Giardia Lamblia diagnosis

A 
fecalysis,
duodenal aspirate (organism lives in the duodenum)
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13
Q

Giardia Lamblia DOC

A

Metronidazole

Quinacrine HCL doc

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14
Q

vaginitis, urethritis,

only trophozoite stage is found, Shorter undulating membrane

A

trichomonas vaginalis

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15
Q

Jerky tumbling motility,seen on “fresh mount”,

A

trichomonas vaginalis

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16
Q

trichomonas vaginalis DOC

A

metronidazole

250mg TID x 5-7 days

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17
Q

strawberry cervix

A

trichomonas vaginalis

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18
Q

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

A

Diphyllobothrium Latum

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19
Q

Can cause B12 deficiency, megaloblastic anemia

A

Diphyllobothrium Latum

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20
Q

Unilocular Hydatid cyst,

dogs/sheep (definitive host)

A

Echinococcus Granulosus

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21
Q

most common siste of dogtapeworm hydatid cyst,

A

liver

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22
Q

dogtapeworm hydatid cyst on rupture causes what?

A

anaphylactic shock

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23
Q

dogtapeworm diagnostic test?

A

Casoni skin test

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24
Q

MC cause of spleenic cyst

A

Echinococcus Granulosus

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25
Q

associated with ingestion of raw or undercooked fish

A

Clonorchis sinensis

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26
Q

aka. Chinese Liver Fluke

A

Clonorchis sinensis

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27
Q

carinoma from Clonorchis sinensis

A

Cholangiocarcinoma

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28
Q

DOC for Clonorchis sinensis

A

Praziquantel

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29
Q

old fashioned electric bulb appearance of egg

A

Clonorchis sinensis

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30
Q

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

A

Klatskin tumor

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31
Q

aka Cat liver fluke, also causes cholangio CA

A

opistorchis felineus

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32
Q

Scariest intestinal worm, wandering behavior

A

Ascaris Lumbricoides

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33
Q

Hurt lung-migration of Ascaris Lumbricoides

A

Loffler’s syndrome

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34
Q

Ascaris Lumbricoides DOC

A

Pyrantel pamoate, mebendazole

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35
Q

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

A

Enterobius Vermicularis

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36
Q

Diagnostics for Enterobius Vermicularis

A

Scotch tape, cellophane anal swab

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37
Q

aka anal pinworm, sitworm, threadworm

A

Enterobius Vermicularis

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38
Q

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

A

Strongyloides Stercoralis

39
Q

Aka. thread worm

A

Strongyloides Stercoralis

40
Q

Strongyloides Stercoralis DOC

A

Albendazole, thiabendazole

41
Q

Dwarf threadworm

A

Strongyloides Stercoralis

42
Q

Strongyloides Stercoralis infective stage

diagnostic stage

A

filariform larva

rhabditiform larva

43
Q

Strongyloides Stercoralis culture medium

A

Harada-Mori culture technique

44
Q

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

A

Trichinella spiralis

45
Q

Trichinella spiralis dx

A

muscle biopsy

bachman intradermal test

46
Q

whipworm, causes muscle inflammation and periorbital edema,

A

Trichuris Trichiura

47
Q

Trichuris Trichiura DX

A

Bentonite flocculation test

serologic test

48
Q

Trichuris Trichiura DOC

A

Thiabendazole

49
Q

Trichuris Trichiura final habitat

A

cecum and ascending colon

50
Q

Trichuris Trichiura prominent clinical manifestation

A

rectal prolapse

51
Q

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

A

Trichuris Trichiura

52
Q

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

A

Ancylostoma duodenela

53
Q

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

A

Necator Americanus

54
Q

Tissue nematodes, pointed tail contains nuclei, deerfly,mangofly

A

Loa Loa

55
Q

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

A

Calabar swelling

56
Q

Loa Loa DOC

A

Diethylcarbamazine

57
Q

Black river blindness disease

A

Onchocerca volvulus

58
Q

Onchocerca volvulus vector

A

black fly

59
Q

Onchocerca volvulus DOC

A

Ivermectin, (affects microfiliaria not adult worms)

Suramin (for adult worms and with eye disease)

60
Q

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

A

Mazzoti reaction

61
Q

Causes Filariasis, elephantiasis, pointed tail free of nuclei

A

Wuchereria Bancrofti

62
Q

Wuchereria Bancrofti DX

A

Thick blood smear

( taken at night displays microfilaria)

63
Q

Wuchereria Bancrofti DOC

A

Diethylcarbamazine

effective against microfilaria

64
Q

Causes Malayan Lymphatic filariasis

A

Brugia Malayi

65
Q

Brugia Malayi elephantiasis is localized where?

A

below knee

66
Q

major cause of visceral larva migrans (2)

A

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

67
Q

Brugia Malayi DOC

A

DEC

68
Q

dog hookworm’/cat hookworm

A

Ancylostoma caninum/braziliense

69
Q

Cutaneous lava migrans

A

Ancylostoma braziliense

70
Q

cat/dog hookworm characteristic inflammatory lesion

A

creeping reaction

71
Q

cat/dog hookworm DOC

A

Thiabendazole

72
Q

Ingestion through contaminated fish,

peanut shell appearance on microscopy

A

Capillaria Philippinensis

73
Q

Bilharzia, Snail fever

A

Schistosomiasis

74
Q

Schistosomiasis:

large lateral spine

A

S. mansoni

75
Q

Schistosomiasis:

japonicum

A

very small lateral spine

76
Q

Schistosomiasis: haematobium

A

terminal spine

77
Q

Schistosomiasis intermediate hosts

A

oncomelania quadriasi

78
Q

Schistosomiasis definitive hosts

A

human

79
Q

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

A

Katayama fever/ acute schistosomiasis

80
Q

swimmers itch

A

Schistosomiasis

MC mansoni, japonicum

81
Q

Schistosomiasis japonicum diagnosis: feces? serum?

A

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

82
Q

Schistosomiasis DOC

A

Praziquantel

83
Q

Pipestem fiborsis

A

Schistosomiasis

84
Q

causes urinary schistosomiasis

A

Schistosomia hematobium

predispose to squamous cell CA

85
Q

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

A

trypanosoma cruzi

86
Q

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

A

trypanosoma gambiense

trypanosoma rhodisiense

87
Q

Early sign of trypanosoma infection

A

Chagoma (Romana’s sign)

88
Q

causes Kala-azar or visceral Leishmaniasis

A

Leishmania Donovani

89
Q

Dum-dum fever

A

Leishmania

90
Q

Causes mucocutaneous leishmaniasis

A

Leishmania braziliensis

91
Q

Vector of Leishmaniasis

A

Sandfly

92
Q

Infective stage of Leishmaniasis

A

Promastigote

93
Q

Leishmaniasis DOC

A

Stibogluconate Na

ASS Microbiology (2 decks)

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