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42 Cards in this Set

  • Front
  • Back
what bacteria make up the anaerobes
bacteroides
peptostreptococcus
actinomyces
veillonella
what class are bacteroides
gram neg rods
what class are peptostreptococcus
gram pos cocci
what class are actinomyces
gram pos rods
where are bacteroides found
normal flora
diseases caused by invasion
overgrowth or immunocompromise
where are anaerobes usually found
abscessses- main
peritonitis
wound infection
dental oral infecion
decrotizing pneumonia
pelvic inflammatory disease
bite wounds
what are the predisposing factors to infection
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
what the appropriate and inappropriate forms of diagnostic sampling
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
what are properties of anerobe samples
foul smell
gas production
what are the gram neg rods
bacterioides
porphyromanas
prevotella
where is bateroides found
intestines
vagina
where is phorphyromonas
oral
prevotella is found where
oral
what does porphyromonas cause
p. gingivialis
periodontal disease
what does prevotella cause
gingivitis -main

lung abscesses, genital infections
what is the major virulence factor in bacterioids fragilis
polysaccharide capsule helps with invasion
what does bacterioides fragilis cause
abdominal abscess
peritonitis
diarrhea
any abscess bc its the most common anaerobe
what are some properties of bacteroides fragilis
moderate anaerobe -can stand some oxygen
intestine
what is the treatment for baaceroides fragilis
metronidazole
carbapenems
combo beta lactam with beta lactamase inhibitor
3rd gen cephalosporins
what is bacteroides fragilis resistant to
penicillin-has beta lactamase
aminoglycosides
tetracycline,
erythromycin
vancomycin
what class is fusobacterium
gram neg rod

fusiform
what does fusobacterium cause
acute necrotizing ulcerative gingivitis
what class is peptostreptococcus
gram pos cocci
where is peptostreptococcus found
anywhere normal flora is found
what can peptostreptococcus
decubitus skin ulcers
diabetic foot ulcers
human bite wounds
pelvic inflammatory disease
peritonitis and intra abdominal abscces
any abcess
2nd most common anaerobe
what class is actinomyces
gram postivie fiamentous branching bacilli
what can be found in actinomyces that is diagnostic
yellow sulfur granules
where is actinomyces found
mainly oral
also in intestines and vagina
what does actinomyces cause
chronic suppurative and granulomatoous infections
cervicofacial lesions
abdominal lesions
salpingitis related to intrauterine contraceptive device.
what doe human bite wounds usually have
bacteroides, fusobacterium, peptostreptococcus

eikenella, s. aureus, viridans strep
what class is eikenella corrodens
gram neg bacilli
facultative anaerobe
what can eikenella corrodens cause
endocarditis
menigitis
sinusitis
where is eikenella found
oral, upper resp.
how is eikenella corrodens treated
sensitive to most antibiotics, including penicillins.
how are bite wound generally treated
must treate anaerobes and aerobes.
what is pasteurella usually found in
animal bites
what class is pasteurella
small gram neg coccobacilli or rods
what is the major virulence factor in pasteurella
a capsule
what is the clincial manifestation of pasteurella
cellulitis
ostemyelitis
respiratory tract infetion
systemic infection
what is the diagnosis of pasteurella
clincal picture and cultures
what is the treatment and prevention for pasteurella
penicillin or other antibiotics
no vaccine
what is the key to understanding bite wound treatment
must cover aerobes and anaerobes

penicillins cover most of the aeorbes pasteurella, eukinella, but does not work for bacteroides