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Bacteria > Gram Positive Rods > Flashcards

Gram Positive Rods Flashcards

1
Q

Bacillus anthracis

A 
GPB; encapsulated
Non-hemolytic
Non-motile
egg white/medusa head morphology
Catalase POS
Vanc SUS
Cutaneous, inhalational, GI anthrax
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2
Q

Bacillus cereus

A

GPB
ellipsoidal spores
spready colony; ground glass; greenish-yellow
beta hemolytic
motile
Catalase POS
Foodborne illness; wound/line infection; traumatic inoc.

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3
Q

Listeria monocytogenes

A

GPB; short rods
beta-hemolysis (narrow zone- similar to Grp B Strep *GBS = Catalase NEG)
Catalase POS
Motile
Growth at 4C
Vanc SUS; intrinsic RES to cephalosporins
Gastroenteritis, meningitis; can cross placenta
detectable on nanosphere
intracellular pathogen

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4
Q

Erysipelothrix

A

GPB (variable); short rods with rounded ends
alpha-hemolytic; pinpoint
Catalase NEG
H2S POS (whisp)
Vanc, aminoglycosides, sulfa RES (intrinsic)
cellulitis (fish, swine assc)

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5
Q

Turcella otitidis

A

GPB; coryneform
Catalase POS, CAMP POS
otitis media

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6
Q

Arcanobacterium

A

GPB; coryneform
beta hemolysis
Catalase NEG

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7
Q

Rothia dentacariosa

A

GPB; coryneform
Catalase VAR
Motility NEG
endocarditis, dental caries

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8
Q

Corynebacterium diphtheriae

A 
GPB; clubby rods, clustered
requires tellurite/tinsdale agar; BAP
Urease NEG
Catalase POS
Vaccine- diphteria
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9
Q

Corynebacterium jeikeium

A 
GPB; cory
Catalase POS
strict aerobe
RES to multiple antibiotics (Pen, Gent)
Vanc and Linz SUS
device assc line infections, nosocomial
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10
Q

Corynebacterium urealyticum

A 
GPB, cory
pinpoint colonies
Urease POS
Catalase POS
Vanc SUS
UTI, cystitis, renal stones
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11
Q

Corynebacterium striatum

A

GPB; striated appearance (glycogen vacuoles)
large colony, luxuriant growth
Urease NEG, PYR POS
likes plastics, devices

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12
Q

Nocardia

A 
BFO
modified acid fast POS
chalky, matte or velvetty
aerial mycelia
Catalase POS
traumatic inoculation; inhalation
N. brasiliense- brain
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13
Q

Propionibacterium

A

GPB; scritchy/squashed spider; pleomorphic
beta hemolytic
Anaerobe/Aerotolerant
Catalase POS
Indole POS (P. acnes)
biofilm on prosthetic devices; joint/shoulder infection
shunt infections

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14
Q

Lactobacillus

A

GPB; short or long, slender in chains; lacto-hook
alpha hemolysis
microaerophilic/anaerobe
Catalase NEG
Vanc RES
dental caries, endocarditis, line infections, normal flora

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15
Q

Actinomyces

A 
GPB; Gram variable, branching/pairs, clubby
Catalase NEG
Anaerobic
Metronidazole RES
actinomycosis
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16
Q

Eubacterium

A 
coccoid, diphtheroidal or filamentous
small colonies
Anaerobic
Catalase NEG
Colisitin RES
periodontitis, human bite wounds
if found in blood, something not right in gut
17
Q

Eggerthella

A

coccobacilli or short rods in pairs and chains
small colonies
Anaerobic
Catalase POS
Colisitin RES
abdominal infections
if found in blood, something not right in gut

18
Q

Clostridium botulinum

A 
GPB; singly or in pairs
oval/subterminal spores with swelling
beta-hemolytic
difficult to culture
Catalase NEG
bolutlism
19
Q

Clostridium difficile

A 
GPB; singly or in pairs
oval/subterminal spores and free spores with swelling
Anaerobic
Horse stable odor
Indole NEG
selective agar: CCFA
~20% healthy adults
toxin mediated disease
20
Q

Clostridium septicum

A 
GPB; pleomorphic
rare spores
swarms/medussa head- thin layer on plate (hard to see)
Beta hemolytic
GI neoplasias
21
Q

Clostridium perfringens

A 
GPB; boxcar shaped
rare spores
double zone of B hemolysis
Anaerobe
Lethcinase POS
Bactermia, Gastroenteritits
Gas Gangrene/myonecrosis
22
Q

Clostridium tertium

A

Gram variable with terminal spores
Aerotolerant
frequent contaminate

23
Q

Clostridium tetani

A 
GPB (GN after 24 hours); singly or in pairs
oval spores, terminal (racket shaped)
narrow zone beta hemolysis
rarely recovered in culture
Tetanus
24
Q

Rhodococcus

A

Coccoid to bacillary
Modified acid fast POS
coral/pink/salmon on older colonies
R. equii- horse infection (opportunistic inf)
granulomatous/pneumonia/bacteremia (immunosupp)

25
Q

Gardnerella vaginalis

A 
Gram var rods or coccobacillary
(trilaminar cell wall --> stain variable)
Catalase NEG
Oxidase NEG
Vanc SEN
bacterial vaginosis
26
Q

GPB, Catalase POS, regular and short

A

Listeria (Aerobic)

Eggerthella (Anaerobic)

27
Q

GPB; regular and short; Catalase NEG

A

Lactobacillus (Anaerobic/Aerotolerant)
Erysipelothrix (Aerobic)
Eubacterium (Anaerobic)

28
Q

GPB; big and boxy; Catalase POS

A

Bacillus (Aerobic)

29
Q

GPB; big and boxy; Catalase NEG

A

Clostridium (Anaerobic)

30
Q

GPB; pleomorphic; Catalase POS

A

Corynebacterium (Aerobic)
Rothia denticariosa (Aerobic)
Turcella (Aerobic)
Propionibacterium (Anaerobic)

31
Q

GPB; pleomorphic; Catalase NEG

A

Arcanobacterium (Aerobic)

Actinomyces (Anaerobic)

32
Q

GPB; BFO; Mod Acid Fast POS

A

Nocardia

33
Q

GPB; BFO; Mod Acid Fast NEG

A

Streptomyces

Bacteria (2 decks)

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