Streptococci Flashcards
strep general
gram +, single cell, diplococci
types of strep (hemolytic)
Beta- complete lysis, Alpha (partial lysis), gamma- no lysis
group B strep
- beta hemolytic
- normally in GI/genital tract.
- pathogenic newborn transmission
group A strep
- beta hemolytic
- often asymptomatic carriers in skin/mucus membranes.
group A virulence factors
adhesive, hydrolytic, pore forming toxins. M protien- allows for subtyping.
Strep A clinical suppurative
pharyngitis, impetigo, pneumonia, cellulitis, scarlet fever, TSS
Strep A non suppurative
acute glom. nephritis, acute rheumatic fever
strep A diagnosis/treat
Gram + cocci in chains, beta hemolytic, bacitracin sensitive. treat with antibiotics (Pen.)
strep pneumonia encounter
person to person, aerosol, asymptomatic carriers.
strep pneumonia damage factors
pore forming pneumolusin
strep pneumonia clinical
pneumonia, meningitis, otis media, bactericemia
strep pneumonia type
alpha hemolytic
strep bovis
alpha hemolytic, related to endocarditis
S. etnerococci
in GI/intestines . alpha or gamma hemolytic
s viridans
in dental plaque - can cause endocarditis. alpha or gamma
another name for group A
strep pyogenes
scarlet fever symptoms
strawberry tongue, pharyngitis, rash that spares face
strep a toxin
STE
TSLS
toxic shock life syndrome, GAS,
main virulence factor for RMF
M protien (anti phagocytic) and strong humoral response (mimicry)
RMF and J<3NES criteria
joints, heart problems, nodules, erythema marginatum, syndenhams chorea,
cola colored urine and puffy cheeks
AGN
when does glom. nephew occur?
after either pharyngitis or superficial
can you prevent post strep glomerular nephritis?
No
what lysis red blood cells (GAS)
streptolycin o
streptokinase (GAS)
plasminogin>plasmin)
which strep is bacitracin sensitive?
GAS
strep eneterococcus clinical
UTI, endocarditis, biliary tree
VRE
vancomycin resistant enterococcus, use linezolid
