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1. G+ Cocci > Streptococcus Pneumoniae > Flashcards

Streptococcus Pneumoniae Flashcards

0
Q

Character (5)

A 
Catalase - 
Optochin S
Alpha hemolytic
NOT normal flora
Carriage in throat (~10%)
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1
Q

Culture

A

Draughtsman colonies in blood agar

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2
Q

Virulence Factors (2)

A

Capsule (anti-phagocytic, different strains produce diff type)
Pneumolysin (memb-damaging)

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3
Q

Clinical Presentation (6)

A 
Endocarditis
Pneumonia
URTI (sinusitis, otitis media)
Meningitis
Peritonitis (spontaneous)
Septicemia (=SIRS, may seed to joints, pericardium)
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4
Q

Predisposing Conditions (4)

A

Age (young, old)
Chronic lung/liver/heart/renal disease
Immunosuppression
Hyposplenism (encapsulated organism clearance)

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5
Q

Diagnosis (2 Conditions)

A

Pneumonia: culture sputum + blood, urine Ag
Meningitis: culture CSF + blood, urine Ag

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6
Q

Treatment (2 Conditions + 1 Note + Prevention)

A

Pneumonia + RTI: pen G/amox
Meningitis: ceftri + vanco
Note: resistance increasing, check with ID physician

Old vaccine: polysaccharide capsule from 23 strains
New vaccine: conjugate of capsule matl + protein carrier

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1. G+ Cocci (3 decks)

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