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Microbiology > Parasitology-protozoa > Flashcards

Parasitology-protozoa Flashcards

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Biology 101 flashcards
0
Q

Flask shaped colon ulcer, desentery without fever, liver abscess (anchovy paste like)

A

Amoeba histolytica

Carrier state: diloxanite furoate
Amebic colitis: metronidazole

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1
Q

Entamoeba histolytica

T/IS/Dx

A

fecal-oral route/mature cyst/trophhhozoites, cyst

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2
Q

Metronidazole is DOC for

A

E. Histolytica
Trichomonas vaginalis
Gardia lambia

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3
Q

Gardia lambia

T/IS/Dx

A

Fecal-oral/cyst/trophozoite, cyst

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4
Q

Cryptosporidium parvum

T/IS/Dx

A

Fecal-oral route/ thick walled oocysts

Nitrozoxanide

Life threatening at CD4<200

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5
Q

Exist only as a pear shaped trophozoite

A

Trichomonas vaginalis

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6
Q

Trichomonas vaginalis

T/IS/Dx

A

Sexual intercourse/trophozoite

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7
Q

Plasmodium in mosquito

A

Gamtocyte–>ookinete–>oocyte–>sporozoite

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8
Q

Plasmodium in the liver

A

Sporozoite–>schizoint

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9
Q

Plasmodium in the blood

A
  1. Schizont–>trophozoite–>merozoite

2. Schizont–>gametocyte

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10
Q

Plasmodium

T/IS/Dx

A

Anopheles mosquito bite/sporozoite/trophozoite (ring form)-thick and thin smear

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11
Q

All plasmodium sp has tertian periodicity except

A

Plasmodium malariae

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12
Q

Plasmodium:highest paracetimea/lowest paracetimea

A

P. falciparum/P. malariae

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13
Q

Cerebral malaria

A

P. falciparum

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14
Q

Recrudescence

A

Falciparum/Malariae

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15
Q

Recurrence

A

Vivax/Ovale

16
Q

Malarial dots

A

Schuffner: ovale, vivax
Maurer: falciparum
Ziemman: malariae

17
Q

Tx

Tissue Schizonticide/ blood Schizonticide / gametocide/ sporonticide

A

Primaquine/chloroquine, quinine/primaquine/ proguanil, pyrimethamine

18
Q

Tx:chloroquine resistant/ hypnozoite eradication/ pregnant

A

Mefloquine+doxycycline/
Primaquine/
Quinidine, quinine

19
Q

Cat as definitive host
Heterophil neg mononucleosis
Encephalitis -Immunocompromised
Intracranial calcification- congenital

A

Toxoplasma gondii

Sulfadiazine + pyrimethamine

20
Q

Toxoplasmosis

T/IS/Dx

A

F-O route, transplacental/ fecal oocyst/ trophozoite, bradyzoite (IgM antibody)

21
Q

Blood tissue protozoan
Romanas sign
Myocarditis, megaesophagus

A

Trypanosome cruzii

Nifurtimox

22
Q

Trypanosoma cruzii

T/IS/Dx

A

Bite of reduviid bug/metacyclic trypomastigote/tripomastigote in blood (stained BMA or muscle biopsy, xenodiagnosis)

23
Q 
African sleeping sickness 
Trypanosomal chancre
Winterbutton's sign
Kerandel's sign
Encephalitis (Mott cells)
A

Trypanosoma brucie

Suramin (blood)
Melarsoprol (CNS)

24
Q

MCC of red tide in the Philippines

A

Pyrodinium bahamense variant compressum

25
Q

Shellfish poisoning syndrome

Paralytic/ neurotoxic / diarrhetic/ amnesic

A

Saxitoxin/ brevetoxin/ okadaic acid/ Domoic acid

Tx: gastric lavage, Neostigmine/edrophonium

26
Q

Trypanosoma brucei

T/IS/Dx

A

Tsetse fly (Glossina)/ metacyclic trypomastigotes/ trypomastigote in blood

27
Q

Granulomatous amebic encephalitis

Contaminated contact lenses

A

Acanthamoeba castellanii

28
Q

Primary amoebic meningoencephalitis

A

Naegleria fowleri

29
Q

Wide necked, round base intestinal ulcer

Ciliated protozoan to cause human dse

A

Balantidium coli

30
Q

Transmitted by ixodes tick

Trophozoite:Maltese cross

A

Babesia microti

31
Q

Leishmania spectrum of dse

A

Cutaneous: leishmania tropica
Visceral: leishmania donovani
Mucocutaneous: leishmania brasiliensis

Tx Na Stibo gluconate

Transmitted by sandfly, infective promastigotes

Microbiology (10 decks)

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