Gram Positive Cocci Flashcards by Leslie Pascual | Brainscape

Q

Group A strep S. pyogenes

A

Cocci
catalase negative
beta-hemolytic

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Q

Group A strep S. pyogenes disease correlation and clinical presentation

A

Disease: Strep throat

Symptoms:

Red swollen throat & tonsils
purulent tonsillar exudate
fever
cervical lymphadenopathy (LAD)

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Q

Group A strep S. pyogenes Diagnosis technique

A

RADT culture

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Q

Group A strep S. pyogenes treatment

A

penicillin

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Q

Group B strep S. agalactiae

A

Cocci
catalase
negative beta-hemolytic

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Q

Group B strep S. agalactiae disease correlation

A

neonatal meningitis
pneumonia
sepsis

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Q

Group D strep Enterococcus

A

catalase negative
variable-hemolytic (most alpha)

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Q

Group D strep Enterococcus disease correlation

A

UTI
biliary tract infection
endocarditis

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Q

Strep pneumoniae

A

diplococci
catalase negative
alpha-hemolytic

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Q

S. pneumoniae virulence factor

A

polysaccharide capsule

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Q

S. pneumoniae disease correlation

A

pneumonia
meningitis
otitis media

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Q

Viridans strep

A

catalase negative
alpha-hemolytic (most)

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Q

Viridans strep disease correlation

A

dental - S. mutans
endocarditis
abscesses

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Q

S. aureus

A

Other stain: coagulase positive
cocci - clusters
catalase positive beta-hemolytic

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Q

S. aureus virulence factor

A

produces toxin coagulase positive

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Q

S. aureus disease correlation

A

endocarditis
septic
arthritis
toxic shock syndrome
hospital acquired PNA surgical wound infections
folliculitis
cellulitis
impetigo
bacterial conjunctivitis

Q

MRSA

A

Other stain: coagulase positive
cocci - clusters
catalase positive
beta-hemolytic

Q

MRSA virulence factor

A

produces toxin coagulase positive

Q

Staph epidermidis

A

Other stain: coagulase negative
cocci-clusters
catalase positive

Q

Staph epidermidis virulence factor

A

Biofilm

Q

Staph epidermidis disease correlation

A

infections of urine catheters, prostheses, etc

Q

Staph saprophyticus

A

coagulase negative
cocci-clusters
catalase positive

Q

Staph saprophyticus disease correlation

A

UTI

Q

What are the aerobic gram-positive cocci?

A

Staph:

S. aureus
S. saprophyticus
S. epidermidis

Strep:

S. pneumoniae
S. pyogenes
S. galactiae
Enterococcus

Q

Which are coagulase-positive?

A

Staphylococcus aureus

Q

Which are coagulase-negative?

A

Staphylococcus:

S. epidermidis

S. saprophyticus

Q

Which bacterias are aerobic catalase-positive?

A

Staphylococcus

S. aureus
S. epidermidis
S. saprophyticus

Q

Which bacterias are aerobic catalase-negative?

A

Group D strep Enterococcus
Streptococci
- S. pneumoniae
- Viridans group Strep
- Group A S. pyogenes
- Group B S. agalactiae

Q

A

Q

What are the alpha-hemolytic bacterias?

A

S. pneumoniae
Viridans group Strep

Q

What are the Beta-hemolytic bacterias?

A

Group A S. pyogenes

Group B S. agalactiae

Q

A