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state exam > runyon groups > Flashcards

runyon groups Flashcards

1
Q

Mycobacteriaceae

A

mycobacterium is the sole genus
prior to 1950’s only 3 known species of clinical significance
m. bovis, m. tuberculosis, mac

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2
Q

Group 1

A

Photochromogens

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3
Q

Group 2

A

Scotochromogens

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4
Q

Group 3

A

Non-photochromogens

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5
Q

Group 4

A

Rapidly growing mycobacteria

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6
Q

Photochromogens

A

synthesize carotenoid pigments when exposed to light

OXYGEN IS ESSENTAL

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7
Q

M. kansasii

A 
10-21 days
chronic cavitary pulmonary lesion
yellow bacillus
extrapulmonary infections
cording is seen
3% of infection
dark red crystals after prolonged exposure
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8
Q

M. simiae

A

pulmonary disease resebling TB

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9
Q

M. marinum

A 
aquatic
swimming pool bacilli
opportunistic
extremities skin ulcers
optimum 30-33
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10
Q

Schotochromogens

A

pigment in both light and dark

“scoto” greek- in the dark

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11
Q

M. szulgai

A

scoto @ 37, photo @ 25
disease similar to TB
cervical lymphadenitis
chronic pulmonary infection

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12
Q

M. scrofulaceium

A

cervical lymphadenitis in children

rarely causes pulmonary disease

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13
Q

M. gordonae

A

10% of all atypical isolates
TAP WATER CONTAMINANT
inefficient decontaminant prcedure

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14
Q

M. Flavescens

A

Tap Water bacillus

intense yellow pigment

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15
Q

Non-photchromogens

A

MAC, M. xenopi, M. malmosense, M. haemophilum, M. branderi, M. celatum, m. genevensi, M. gastri, M. terrae complex

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16
Q

M. avium and M. intracelllulare

A 
known together as m. avium complex
intracellulare "battery bacillus"
Major pathogen of AIDS, immunocomp, elderly
pleomorphic 
many morphotypes
17
Q

m. xenopi

A

opportunistic
disseminated disease in AIDS
grows best at 42 (so does m. celatum)

18
Q

m. haemophilum

A

requires hemin
grows best at 30, slow grower
causes skins lesions and skin/joint disease

19
Q

m. genavense

A

isolated from AIDS pateints from blood, spleen, and bone marrows
no growth on solid media
id by molecular

20
Q

saprophytes (non-photochromogens)

A

m. gastri, m. terrae complex- terrae, triviale, nonchromogenicum

21
Q

Rapid Growers

A

M. fortuitum, M. cheonae, M. abscessus, M. phlei, M. smegmatis, M. thermosresistible, M. vaccae

22
Q

M. fortuitum

A

Opportunistic pathogen, post-op, post-traumatic inoculation

23
Q

M. abscessus

A

ear, skin infection

24
Q

Saprophytes (Rapid growers)

A

M. PHeli, M. smegmatis, M. thermoresistible

25
Q

Non-runyon

A

M. ulcerans- 30 C, rarely seen, subcutaneous lesions (buruli ulcer)
MTB complex
M. tuberculosis, M. bovis, M. africanum, M. microti, M. canettii

26
Q

MTB complex

A

Human Pathogens

Culture confirmation using Accuprobe, nucleic acid amplification test,

state exam (9 decks)

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