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Bacteriology > Mycobacteria > Flashcards

Mycobacteria Flashcards

1
Q

Mycpbacterium cell wall composition

A

N-glycocylmuramic acid

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2
Q

Droplets of dried sputum may be infectious in the AIR for ________

A

8-10 days

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3
Q

Cultures may be killed from sunlight within ________

A

2 hrs

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4
Q

Boiling easily kills mycobacteria for _______ minutes

A

10 minutes

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5
Q

Act as Digestant

A

NALC

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6
Q

Act as decontaminant

A

NaOH

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7
Q

Pathognomonic for MTB

A

Laghan’s cells
Ghon complexes (chest X-ray)

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8
Q

MTB colonies

A

Cauliflower like appearance

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9
Q

Number of spx. submitted for MTB detection

A

2 specimens
* 1st - Early morning
* 2nd - Random

Source: DOH

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10
Q

Ideal size of the AFB smear

A

2x3 cm

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11
Q

Use to diagnose latent TB infection

A

IGRAS - Interferon gammar release Assay

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12
Q

Preffered stain for Tissue

A

Kinyou’s (Cold method)

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13
Q

Preffered stain for M. laprae

A

Fite faraco

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14
Q

Before reporting MTB negative, ________ fields should be examined

A

300 fields

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15
Q

Inhibitor of Egg based media for MTB

A

Malachite green

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16
Q

MTB in Pappenheim’s stain

A

Red

17
Q

MTB in Baumgartin’s stain

A

Blue

18
Q

Type I: Phytochromogens

“MASK”

A

Pigmentin LIGHT tube
* M. marinum
* M. asiaticum
* M. semiae
* M. kansasii

19
Q

Type II: Schtochromogen

“XS sci GORDON”

A

Produce pigment in DARK and LIGHT tube
* M. xenopi
* M. szaulgai
* M. scrofula
* M. gordonae

20
Q

Type IV: Rapid grower

“Sir Felix Cute na Pogi

A

Grows fewer than 7 days (5-7)
* M. smegmatis
* M. fortuitum
* M. cheloniae
* M. phlei

21
Q

Yellow bacillus

A

M. kansasi

22
Q

Swimming pool granulomatous

A

M. marinum

23
Q

Tap water bacillus

A

M. gordonae

24
Q

TB in animals and used in MTB vaccine

A

M. bovis

25
Q

Seen in HIV/AIDS

A

M. avium intracellularle complex

26
Q

Seen in Chron’s disease

A

M. paratubercolosis

27
Q

Seen in Buruli ulcer

A

M. ulcerans

28
Q

Tap water bacillus

A

M. gordonae

29
Q

Hay bacillus

A

M. phlei

30
Q

Non-cultivatable and has tropism in peripheral nerves

A

M. laprae

Bacteriology (24 decks)

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