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15 Cards in this Set
- Front
- Back
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timeline for a typical burn
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burn wound initially sterile
w/in 48 hours, gram + bacteria move in w/in 5-7 days, gram - bacteria replace gram + bacteria opportunistic infections (fungi) may follow |
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strict aerobe, nonfermenting
aquatic environments soluble pigments (greenish blue) fruity aroma lactose negative |
Pseudomonas aeruginosa
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gram (-) motile bacillus
lactose fermenter, grown on MacConkey agar ornithine decarboxylase positive and urease negative (to distinguish from Klebsiella) |
Enterobacter cloacae
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encapsulated gram (-) bacillus
ferments lactose |
Klebsiella pneumoniae
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gram positive, bullet shaped
catalase negative resistant to Optochin (to distinguish from other gram + cocci) |
Enterococcus faecalis
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pleomorphic aerobic gram (-) rod
gram stain similar to H. influenzae few virulence factors |
Acinetobacter baumannii
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2nd most common cause of fungal endocarditis
hyphae w/ frequent septai and branch at 45 degree angles silver stain needed to diagnose |
Aspergillus sp.
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fungal infection common in diabetics and immunosuppressed
budding yeast |
Candida albicans
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most common pathogens involved in surgical wound infections
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Enterococci
Staph Pseudomonas Enterobacter |
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organisms most frequently isolated from burn wound biopsy specimens
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Staph aureus
Pseudomonas Enterobacter cloacae Klebsiella pneumoniae Enterococcus faecalis Acinetobacter baumannii Aspergillus sp. Candida albicans |
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most common cause of infection on surgical devices
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Staph aureus (growth as a biofilm)
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important nosocomial UTI pathogen
extracellular slime production and biofilm formation |
Staphylococcus epidermidis
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2 important virulence factors of Streptococcus
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antiphagocytic capsule
M protein |
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gram-positive rods
spore forming strict anaerobes neurotoxin causes tonic muscle spasms and hyperreflexia |
Clostridium tetani
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anaerobic, non-motile gram positive bacilli
spore forming gas gangrene |
Clostridium perfringens
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