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13 Cards in this Set
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Major cause of ABE (fast) especially in IV drug users.(Rt side, tricuspid - causes damaged to healthy tissue)
Exotoxin:Antibiotics don't help Enterotoxin - Gastroenteritis TSST-1 - palms soles desquamate Exfolatin - Sacalded skin syndrome - fine sheets of peeling skin- neonates umbilical cord Organ invasion: Sepsis Pneumonia - CAP + cavitations Meningitis Osteomyelitis - hematogenous 12yr old boys ABE - R - lung, L- brain Septic arthritis Skin infections - Impetigo, cellulitis, folliculits UTI MRSA |
Staph Aureus (gold)
Coagulase + = Activates prothrombin causing clotting Tx: Group II penicillin MRSA:IV Vancomycin, Daptomycin |
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Second leading cause of UTI in sexually active women
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Staph Saphrophyticus
Coagulase - Ferments mannitol Resistant to novobiocin Tx:Penn G,V |
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Part of the normal flora of skin. Blood culture contaminant,draw @ 2 sites.
Nosocomial infections Prosthetics (endocarditis) UTI Sepsis (IV, Cathethers) |
Staph Epidermidis
Coagulase - Does not ferment mannitol Tx:Vancomycin |
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Alpha hemolytic, Optochin Sensitive
Lancet shaped diplococci found in rusty brown sputum. Causes >90% cases of lobar pneumonia. Most common cause of bacterial meningitis in adults and otitis media in kids. Pneumonia Meningitis Sepsis Otitis Media (Kids) |
Strep Pneumonia (pneumococcus)
Pneumococcus is to Parents what group B is for Babies Polysaccharide capsule - 84 Dx: Quelling Rx, Optochin sens Tx:Penn G, Erythromycin, Ceftriaxone Prophylaxis: Vaccine 23 ag. Elderly, asplenic, sickle cell, immunocomp. Adults: Pneumovax Kids: heptavalent - 6,9,14,19,23 |
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Alpha hemolytic, Optochin Resistant
Normally found in GI, nasopharynx and gingiva. Leading cause of SBE. Dental infections - cavities SBE - previously damaged, slow Abscesses - organs, growth in blood, order CT with contrast |
Strep Viridans (Green)
Salivarius, Sanguis, Mitis, Intermedius (abcesses), Mutans (dental) Tx:Penn G |
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Beta hemolytic, Bacitracin sensitive
Invasion/Exotoxin Release: Strep pharyngitis - Penn G,V Skin infection - impetigo, cellulitis, folliculits, necrotizing fasciitis/myositis Scarlet Fever - pyrogenic toxin, face sparing, Dick test TSS Delayed antibody mediated: Rheumatic fever (john travolta) - follow pharyngitis (not skin), erythema marginatum, chorea, myocarditis, arthritis Mitral>aortic valve Glomerulonephritis Ag-Ab deposition in glomeular BM complement mediated damage Occurs 1 wk after pharynx or skin infection Puffy faced, tea colored urine (hematuria), hypervolemia, high BP in a kid. |
Strep Pyogenes -Group A Strep
Dx: DNase B + ASO titers Tx: Strep pharyngitis - penn G Skin infection - Group II penn Necrotizing/scarlet fever/TSS Penn G + clidamycin (block toxin production) Rheumatic Fever - prophylactic penicillin (Group III) Amoxicillin - surgery + dental Glomerulonephritis - Penn G,V |
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Beta hemolytic, Bacitracin Resistant
25% of women normally carry this vaginally, seen in < 3months of age (neonates) Sepsis Pneumonia Meningitis |
Strep Agalactiae -Group B Strep
Tx:Penn G + listeria and E-coli coverage |
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Gamma hemolytic, Bile Esculin -
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Non-Group D Strep
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Gamma hemolytic, Bile Esculin +, NaCl +
Normal GI flora SBE Biliary tract UTI |
Group D Strep Enterococci
faecalis faecium Tx:Ampicillin + Aminoglycoside Resistant - vancomycin VRE - pristinomycins |
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Gamma hemolytic, Bile Esculin +, NaCl -
This bug is associated with colon cancer |
Group D Strep
Strep Bovis Strep Equinus Bovis in the blood, ca in bowel! |
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3 Meningitis causing organisms
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Group B strep - S. Agalactiae
E-Coli Listeria Dx: CSF gram stain culture Non-specific signs in neonates |
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Gram + organisms that damage the heart
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Strep Pyogenes - RF (R side)
Strep Viridans - SBE Strep Group D - SBE Staph Aureus - ABE (L side) |
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Dx via the quelling Rxn
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Strep Pneumoniae
H. Influenzae |
