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42 Cards in this Set
- Front
- Back
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what bacteria make up the anaerobes
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bacteroides
peptostreptococcus actinomyces veillonella |
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what class are bacteroides
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gram neg rods
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what class are peptostreptococcus
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gram pos cocci
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what class are actinomyces
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gram pos rods
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where are bacteroides found
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normal flora
diseases caused by invasion overgrowth or immunocompromise |
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where are anaerobes usually found
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abscessses- main
peritonitis wound infection dental oral infecion decrotizing pneumonia pelvic inflammatory disease bite wounds |
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what are the predisposing factors to infection
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reuction in tissue Eh(oxidation reduction potential)
trauma with loss of blood supply growth of facultatvie bacteria to use up the oxygen disruption of epithelial barriers comprimiesed host defense preveious antimibrobial therapy |
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what the appropriate and inappropriate forms of diagnostic sampling
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acceptable
-aspirated pus -tissue -bod fluids(cerebrospnial, pleural, pericadial, synovial) -transtracheal aspirate inappropriate-bc already anaerobes present -throat, gingival or vaginal swabs sputum feces, gastic contents, urine |
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what are properties of anerobe samples
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foul smell
gas production |
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what are the gram neg rods
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bacterioides
porphyromanas prevotella |
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where is bateroides found
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intestines
vagina |
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where is phorphyromonas
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oral
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prevotella is found where
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oral
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what does porphyromonas cause
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p. gingivialis
periodontal disease |
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what does prevotella cause
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gingivitis -main
lung abscesses, genital infections |
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what is the major virulence factor in bacterioids fragilis
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polysaccharide capsule helps with invasion
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what does bacterioides fragilis cause
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abdominal abscess
peritonitis diarrhea any abscess bc its the most common anaerobe |
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what are some properties of bacteroides fragilis
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moderate anaerobe -can stand some oxygen
intestine |
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what is the treatment for baaceroides fragilis
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metronidazole
carbapenems combo beta lactam with beta lactamase inhibitor 3rd gen cephalosporins |
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what is bacteroides fragilis resistant to
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penicillin-has beta lactamase
aminoglycosides tetracycline, erythromycin vancomycin |
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what class is fusobacterium
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gram neg rod
fusiform |
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what does fusobacterium cause
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acute necrotizing ulcerative gingivitis
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what class is peptostreptococcus
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gram pos cocci
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where is peptostreptococcus found
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anywhere normal flora is found
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what can peptostreptococcus
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decubitus skin ulcers
diabetic foot ulcers human bite wounds pelvic inflammatory disease peritonitis and intra abdominal abscces any abcess 2nd most common anaerobe |
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what class is actinomyces
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gram postivie fiamentous branching bacilli
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what can be found in actinomyces that is diagnostic
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yellow sulfur granules
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where is actinomyces found
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mainly oral
also in intestines and vagina |
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what does actinomyces cause
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chronic suppurative and granulomatoous infections
cervicofacial lesions abdominal lesions salpingitis related to intrauterine contraceptive device. |
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what doe human bite wounds usually have
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bacteroides, fusobacterium, peptostreptococcus
eikenella, s. aureus, viridans strep |
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what class is eikenella corrodens
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gram neg bacilli
facultative anaerobe |
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what can eikenella corrodens cause
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endocarditis
menigitis sinusitis |
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where is eikenella found
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oral, upper resp.
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how is eikenella corrodens treated
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sensitive to most antibiotics, including penicillins.
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how are bite wound generally treated
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must treate anaerobes and aerobes.
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what is pasteurella usually found in
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animal bites
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what class is pasteurella
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small gram neg coccobacilli or rods
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what is the major virulence factor in pasteurella
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a capsule
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what is the clincial manifestation of pasteurella
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cellulitis
ostemyelitis respiratory tract infetion systemic infection |
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what is the diagnosis of pasteurella
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clincal picture and cultures
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what is the treatment and prevention for pasteurella
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penicillin or other antibiotics
no vaccine |
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what is the key to understanding bite wound treatment
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must cover aerobes and anaerobes
penicillins cover most of the aeorbes pasteurella, eukinella, but does not work for bacteroides |
