MYCOLOGY AND PARASITOLOGY Flashcards Preview

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Flashcards in MYCOLOGY AND PARASITOLOGY Deck (164)
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1

How do you diagnose A) Toxo B) Naelgeria and C) Trypanosoma brucei?

A) serology and biopsy B) amoebas in CSF C) blood smear or CSF sample for later disease

1

How do you treat Tanea solium intestinal infection? Neurocystericosis?

Intestinal = Praziquantel; Neurocysterocosis = Praziquantel + Mebendazole

2

Which systemic mycosis often forms granulomatous nodules in the skin?

Blastomyces dermatidis

2

What kind of parasite is Onchocerca volvulus?

nematode

3

What is melarsoprol used to treat?

Trypanosoma brucei in the CSF

3

What kind of parasite is Echinococcus granulosus?

Cestode (tapeworm)

3

What is the Tx for Loa loa?

Diethylcarbamazine

3

Which worms (2) cause microcytic anemia? Which worm (1) causes macrocytic anemia?

Microcytic = Necator americanus and Ancyclostoma duodenale; Macrocytic: Diphyllobothrium latum

3

How do you treat Paragonismus westermani? How does it present?

Praziquantel; lung inflammation with hemoptysis

4

Which systemic mycosis is common in the San Joaquin Valley?

Coccidiodes immitis

5

What should you think if a newborn has hydrocephalus, intracranial calcifications, and chorioretinitis?

Congenital toxoplasmosis

5

What is the Tx for Leishmania donovani?

Sodium stibogluconate

5

How is the Tx of trichomonas different from that of bacterial vaginosis?

Trichomonas vaginalis and BV (gardnerella overgrowth) are both Tx'd with metronidazole, but T. vaginalis is an STD so requires Tx of the partner as well

6

Which protozoal infection is an STD?

Trichomonas vaginalis

7

What route does Cryptococcus use to get to the meninges?

hematogenous from lungs

7

What is the reservoir for Trichomonas vaginalis?

Humans because cannot form cysts

7

How do you become infected with Strongyloides stercoralis?

Larvae penetrate the skin

7

How do you treat Schistosoma haematobium?

Praziquantel

8

Name 5 nematode infections of tissues (not intestines)

Loa loa, Onchocerca volvulus, Dracunculus medinensis, Wucheria bancrofti, and Toxocara canis

8

What protozoal infection is sodium stibogluconate used to tx?

Leishmania donovani

9

What should you test for before beginning intravenous quinidine for malaria?

G6PD deficiency

10

How does Naegleria fowleri infect the brain, what Tx has proven effective for a few survivors?

via the cribriform plate; amphotericin B

10

Which nematodes can cause microcytic anemia (2)?

The hookworms: they suck blood from intestine = Ancyclostoma duodenale and Necator americanus

11

What do microsporum, trichophyton, and epidermophyton cause?

These are dermatophytes and cause any of the tineas

11

KOH prep of rose gardeners disease would have what shape?

Cigar shaped dimorph (Sporothrix schenckii)

11

What kind of parasite is Loa loa?

nematode

11

What is the feared complication of Schistosoma haematobium?

Bladder cancer (hangs out in the venous plexus)

13

What is the most specific test for Cryptococcus neoformans?

Latex agglutination test

14

What will you see on KOH prep of a dermatophyte infection?

mold hyphae

15

What is the DOC for candidal vulvovaginitis (2)?

Topical Azole (inhibit ergosterol synthesis)