Miscellaneous Quiz / Endocarditis

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Can you name the Endocarditis?

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HintAnswer
Most common polymicrobial IE
Dz of structurally abnormal valves with low fever, anorexia, and weakness lasting more than several weeks following dental procedure with new or changin heart murmur
Who needs IE prophylaxis??
Catalase (-), a-hemolytic, optochin resistant, and bile resistant
Other gram (organisms) E
Must be considered in culture-negative IE
Other gram (organisms) A
Other gram (organisms) C
IE within 3 months of valve surgery
Most common cause of acute IE
Late or early?? Associated w/ nosocomial/wound contamination
Major predisposing factor to IE
Coagulase (-), no hemolysis, mannitol (-)
Common species in homeless males
Infection is a consequence of...
Viridans streptococci bugs
Most common fungal endocarditis bugs
 
Late or early?? Associated with transient bacteremia
Catalase (-) grows in 6.5% NaCl, a or y-hemolysis
HintAnswer
Causes subacutre IE in pts with damaged heart valves
Virulence factor that promotes clumping in S. aureus
Tx for streptococci and enterococci
Other gram (organisms) H
Virulence factor that inhibits phagocytosis in S. aureua
Virulence factor Viridans
Other gram (organisms) K
Valve commonly infected in IV drug user IE
Tx for methicillin resistant staphylococci
Fastidious organisms requires 5-10% carbon dioxide for growth + 3 wks incubation
Virulence factor that promotes conversion of fibrinogen to fibrin clot in S. aureus
Empiric antibiotic therapy in acute and IV drug user
Catalase (+), Coagulase (+), B-hemolysis, and Mannitol (+)
Tx for methicillin sensitive staphylococci
Dz of abnormal or normal valves with febrile toxic course, chills, rapid onset of CHF lasting days to weeks
Most common cause of subacute IE in pts, often pts with abnormal valves and acquired from dental procedures
Virulence factor that is a pore-forming toxin in S. aureus
 
Aerobic gram (-), produces pigments, and has diverse metabolic capabilities
Generally found in IV drug users and ICU pts who receive broad spectrum antibiotics - BC often negative

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