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Flashcards in Atypical Mycobacteria Deck (11)
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1
Q

What are the two photochromogens mycobacteria?

A

M. kansasii

M. marinum

2
Q

Where is M. kansasii found and what does it cause?

A

In midwest, texas and england

Produces pulmonary/systemic dz most closely resembling TB and is killed by the same antibiotics

3
Q

Where is M. marinum found and what does it cause?

A

Found in fresh and salt water

Forms “fish-tank” granulomatous, ulcerating lesions on abrasions exposed to swimming water or aquariums

Tx with tetracycline

4
Q

What Mycobacteria is responsible for scrofula seen in children?

A

Scrofulaceum

5
Q

Where is scrofulaceum found?

A

reservoir is in water

6
Q

What are the 2 nonchromogen mycobacteria?

A

M. avium

M. intracellulare

7
Q

What is unique about M. avium and M. intracellulare?

A

They are very difficult to distinguish and cause pulmonary dz that is indistinguishable from TB in severely immunocompromised pts

Also very drug resistant

8
Q

Where are the nonchromogens M. avium and M. intracellulare found?

A

Found in the soil and water

9
Q

What are the 4 rapidly growing mycobacteria that can be cultured in

A

M. fortuitum
M. chelonei
M. Abscessus
M. smegmatis

10
Q

Where are M. fortuitum and M. chelonei found and when do they cause problems?

A

Found in the soil and water

Cause problems in immunocompromised, prosthetic hips, indwelling catheters, and puncture wounds

11
Q

Where is M. smegmatis found?

A

Normal flora under foreskin