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80 terms

Respiratory - bacteria

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rhinitis
caused by viruses only
pharyngitis
sx: pseudomembrane
gangrenous; sometimes precipitated by measles
noma
peritonsillar abscess
caused by bacteria only
may cause aspiration pneumonia
peritonsillar abscess
candida
can cause stomatitis
retropharyngeal abscess
sx: change in phonation of voice
diptheria
treat with antitoxin + abx
epiglottitis
muffled phonation
laryngotracheitis
medical emergency
bubbling ronchi
bronchitis
dullness to percussion
pneumonia
myco + fungus
cause of chronic pneumonia
pleural effusion
loss of costophrenic angle
bronchopneumonia
patchy infiltrates
lobar pneumonia
uniform consolidation
viral pneumonia
diffuse interstitial pattern
pyogenic strep
contains lancefield antigen (cell wall carb)
s sanguis, salivarius, mutans
viridans strep
s equi, bovis, agalactiae
pyogenic strep
pyogenes
virulence: protein M
penicillin
tx of strep throat
strep throat
sx: pastia's lines
s pneumonia
virulence: thick capsule, pneumolysin
s pneumonia
MC cause of CA-pneumonia
protein M
degrades C3b
neisseria
not normal flora
c diptheriae
grown on loeffler's serum
diptheria toxin
inhibits EF-2
diptheria
sx: pseudomembrane
h influenza
causes meningitis in kids <2yo, epiglottitis in kids 2-5
h influenza
requires factor x and v for growth
influenza, klebsiella
virulence factor: capsule
3rd gen cephalosporin
tx of h influenza
b pertussis
looks like droplets of mercury
tracheal cytotoxin
produces NO
adenylate toxin
increases cAMP conversion
destroyes cilia
tracheal cytotoxin
A-B toxin
allows pertussis to bind to epithelia
pertussis
grows on charcoal blood agar with cephalosporin
clarithromycin
tx of pertussis
TB
has LAM
m kansasii
photochromogenic colonies
m avium intracellulare complex
cavitary pulmonary disease
m scrofulaceum
granulomatous cervical lympadenitis
diptheria
grows on tinsdale
legionella
grows on BCYE
legionella
transmitted by aerosolized water
legionella
macrophage invasion potentiator
legionella
dx with DFA
legionella
produces B-lactamase
m pneumonaie
fried egg appearance
m pneumonaie
penicillin resistant (no cell wall)
m pneumoniae
cytadhesin
m and c pneumoniae
"walking pneumonia"
klebsiella
pink colonies on macconkey
klebsiella
mucoid colonies
klebsiella
affects very old and very young, alcoholics
pseudomonas
virulence: exotoxins A, exoenzyme S, elastase
exotoxin A
inhibits EF-2
exoenzyme S
ADP ribosylation
pseudomonas
resistance mediated by porins
chlamydia
elementary bodies => reticular (inclusion bodies)
c trachomatis
genital infxn, conjunctivitis
c psittaci
aerosol, usually bird keepers
c pneumoniae
implicated in atherosclerosis
c pneumoniae
grown on Hep2 lines
b anthracis
medusa-head colonies
b anthracis
sensitive to y-phage
b anthracis
virulence: poly-D-glutamyl capsule
anthrax toxin
has EF, PA, and LF factors
yersinia
fried egg, coppered hammer appearance
Yop
inhibits platelet aggregation & inflammatory cytokines
yersinia
virulence: PAI, F1, plasminogen, plasmid
yersinia
tx: streptomycin
nocardia
AFB positive, forms branched hyphae
n brasiliensis
acquired by thorn prick
nocardia
colonies smell like dirt. white to orange pigment.
nocardia
sx: pneumonia + focal CNS signs
rhodococcus
salmon pink, mucoid colonies