![]() ![]() gram positive cocci -grape like clusters -golden colored when plated -beta hemolytic (looks like glowing when plated on red agar) -ferments mannitol turns agar bright yellow (if not it will stay pink) -protein A is the main virulence factor for staph aureus - component of cell wall combined FC portion of immunoglobulin prevents compliment from binding same region preventing phagocytosis -coagulase positive (parting the red sea in the picture) (converts fibrinogen to fibrin) -CATALSE POSITIVE (hydrogen peroxide to water conversion) -colonizes the nose -MCC of septic arthritis in adults -pneumonia which looks like patchy infiltrates on x-ray -post-viral bacterial pneumonia -abscesses -rapid onset acute bacterial endocarditic >IV drug users endocarditis >tricupsid most likely involved -MCC of Osteomyelitis -scalded skin syndrome where skin peals off (exfoliatin toxin) -toxic shock syndrome like leaving gause on or tampon in (foreign material in the body) which is a superantigen (TSST) -staph food poisoning from performed toxin - more associated with vomitting from meats and mayonnaise -MRSA resistance by altering PBP which constructs cell walls -treat MRSA with VANCOMYCIN -Nafcillin if its methacillin sensitive ![]()
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