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MV > Systemic & Opportunistic mycoses > Flashcards

Systemic & Opportunistic mycoses Flashcards

1
Q

Thermally dimorphic means

A

It has a Mold & Yeast phase

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2
Q

Systemic fungi is commonly acquired thru

A

INHALATION

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3
Q

Examples of systemic fungi

A 
Histoplasma capsulatum
Blastomyces dermatitidis
Paracoccidioides brasiliensis
Coccidioides immitis
Talaromyces marneffei
Sporothrix schenkii
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4
Q

These are knob-like projections

A

Tuberculate

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5
Q

The yeast phase of H. capsulatum is often found in

A

monocytes & macrophages

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6
Q

Most infectious systemic fungi

A

Coccidiodes immitis

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7
Q

C. immitis should be handled and processed under what BSC

A

III

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8
Q

The yeast phase of this fungi resembles a Mariner’s wheel

A

Paracoccidiodes brasiliensis

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9
Q

Non viable ghost cells

A

disjunctor cells

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10
Q

North American blastomycoses

A

Blastomycoses dermatitidis

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11
Q

South American blastomycoses

A

Paracoccidiodes brasiliensis

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12
Q

Formelry Penicillium

A

Talaromyces marneffei

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13
Q

The size of T. marneffei in tissue phase

A

3-8um

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14
Q

It has a broad based blastoconidia

A

Blastomyces dermatitidis

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15
Q

Most are saprobes or saphrophytic

A

Opportunistic fungi

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16
Q

T. marneffei commonly causes disease in ___ patients

A

HIV-positive

17
Q

Examples of Opportunistic fungi

A 
Aspergillus spp.
Zygomycetes 
Fusarium spp.
Candida albicans
Cryptococcus neoformans
Pneumocystis jiroveci
18
Q

Color of A. fumigatus on SABHI

A

Green-gray / tan reverse

19
Q

Color of A.flavus on SABHI

A

Yellow-green / red-brown reverse

20
Q

Color of A.niger on SABHI

A

Yellow-black / cream or buff reverse

21
Q

Color of A. terreus on SABHI

A

Tan-cinnamon / yellow reverse

22
Q

A. terreus is resistant to ___

A

Amphotericin B

23
Q

Most common cause of aspergillosis

A

A. fumigatus

24
Q

Causes otomycosis

A

A. niger

25
Q

Zygomycetes are seen as contaminants in ___

A

grains, bread, fruits

26
Q

Zygomycetes is also known as

A

Mucorales / Mucormycetes

27
Q

Zygomycetes can grown in __ hours

A

24-26

28
Q

Colonies may appear yeastlike that develops pink-violet centers

A

Fusarium spp.

29
Q

The most common yeast isolate

A

Candida albicans

30
Q

Presumptive identification of C. albicans

A

Positive germ tube

31
Q

Agent of Cryptococcal meningitis

A

Cryptococcus neoformans

32
Q

C. neoformans forms a ___ pattern

A

starburst

33
Q

Non filamentous fungus

A

Pneumocystis jiroveci

34
Q

Acquired thru contact w/ bird droppings

A

C. neoformans

35
Q

Stain used to demonstrate the thick polysaccharide capsule of C. neoformans

A

India ink / Nigrosin

36
Q

Forms a green-gray colony

A

A. fumigatus

37
Q

Causes systemic infection after BM transplant

A

Fusarium spp.

MV (5 decks)

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