FA Special Stains and Cultures Flashcards

1
Q

Chlamydia, Borrelia, Ricketsiae, Trypanosomes, and Plasmodium can all be visualized with what special stain?

A

Giemsa

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2
Q

Giema staining bugs - Certain Bugs Really Try My Patience

A
Chlamydia
Borrelia
Rickettsiae
Trypanosomes
Plasmodium
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3
Q

This special stain turns glycogen & mucopolysaccharides bring pink;

A

PAS (periodic acid-Schiff)

PAS the sugar

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4
Q

What bug can be detected by PAS?

A

Tropheryma whipplei

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5
Q

What bugs can be detected by Ziehl-Neelsen (carbon fuchsin)?

A

Acid-fast organisms (Nocardia, Mycobacterium)

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6
Q

What bug can be detected by India ink?

A

Cryptococcus

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7
Q

What bugs can be detected by silver stain

A

Fungi (eg Pneumocystic), Legionella, H pylori

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8
Q

What bug can be isolated with chocolate agar with factors V (NAD+) and X (hematin)?

A

H influenzae

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9
Q

What bugs can be isolated with Thayer-Martin (or VPN) media?

A

N gonorrhoeae, N meningitidis

To connect Neisseria, please use your VPN client

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10
Q

What are the three components of Thayer-Martin (VPN) culture?

A

Vancomycin
Polymyxin
Nystatin

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11
Q

Why is vanco included in VPN?

A

Inhibits gram positive organisms

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12
Q

Why is polymyxin included in VPN?

A

inhibits gram negs except neisseria

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13
Q

why is nystatin included in VPN?

A

inhibits fungi

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14
Q

What can be isolated with Tellurite plate or Loffler’s media? (These are two things)

A

C diphhtheriae

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15
Q

What can be isolated with Lowenstein-jensen agar?

A

M tubuerculossis

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16
Q

What can be isolated with Bordet-Gengous (potato) agar?

A

B pertussis

17
Q

What can be isolated with Eaton’s agar?

A

M pneumoniae

18
Q

What grows pink colonies on MacConkey’s agar?

A

Lactose-fermenting enterics

19
Q

Why do lactose fermentors turn MacConkey pink?

A

Fermentation produces acid, turning colony pink

20
Q

What grows on eosin-methylene blue (EMB) as colonies with green metallic sheen?

A

E coli

21
Q

What grows on charcoal yeast extract agar buffered with cystein and iron?

A

Legionella

22
Q

What grow’s on Sabouraud’s agar?

A

Fungi. Sab’s a fun guy!