strep pneumoniae Flashcards
virulence factors, morphology, infections, lab dx
Umblicate Colonies, alpha hemolysis
strep pneumoniae
Prevalent in elderly with other diseases
* Generally, occurs as a secondary infection
pneumonia
chills, cough, dyspnea (shortness of breath)
* Leads to edema of the lungs and drowning in own fluids
* High mortality even with treatment (5% to 10%)
lobar pneumonia
sinusitis caused by what
strep pneumonia
ear infections, children under 3
otitis media caused by strep pneumo
Common as a normal flora in upper respiratory tract (URT)
Avirulent Form of S. pneumoniae
Endocarditis caused by what strep
strep pneumo
polysaccharide capsule
strep pneumo
IgA protease is a toxin for this bug
strep pneumo
other toxins for strep pneumoniae are what
Hemolysins, Hyaluronidase, Neuraminidase
redness and swelling (inflammation) of the lining of your belly or abdomen. strep pneuma can cause this infection that causes dissemination.
peritonitis
Blood and cerebrospinal fluid (CSF) positive
* False positive Coombs test often observed
Hemolytic uremic syndrome (HUS)
Ethylhydrocuprein hydrochloride’
Optochin (P disk)
Gram positive diplococci with lancet shape
morphology of strep pneumoniae
S. pneumoniae Bile solubility Test is negative or positive?
positive
6-mm optochin disk what size zone would be susceptible?
> than 14 mm
10-mm optochin disk what size zone would be susceptible?
> than 16 mm
causes rust colored sputum
bacterial pneumonia
significant virulence factor for strep pneumoniae
polysaccharide capsule
Screen for penicillin sensitivity with Oxacillin disc
> 20mm = sensitive
drug of choice to treat strep pneumonia
generally penicillin
what to use to screen for penicillin resistant strep pneumonia
oxacillin disk. >20 mm sensitive
the vaccine for strep pneumonia is encouraged for children, elderly, cardiac patients, and a-splenic individuals. what’s the name of this vaccine
Prevnar
