Micro - Gram Positive Bacteria V Flashcards
gram positive rods non spore formers
corynbacterium diptheriae
listeria monocytogenes
diptheria
corynbacterium diptheriae
-colonizes pharynx - leaving a grayish pseudomembrane composed of fibrin, leukocytes, necrosed epithelia
child with sore throat and fever
-dark inflammatatory exudate on childs pharynx
corynbacterium diptheriae
potassium tellurite agar
for corynbacterium diptheriae
loefflers coagulated blood serum
for corynbacterium diptheriae
Tx for corynbacterium diptheriae infection
antitoxin
penicillin or erithromycin
DPT vaccine
diptheroids
corynbacterium
arcanobacterium
bervivacterium
microbacterium
frequently contaminants of cultures
increasingly causing both community acquired infection and nosocomial infections
upper lobe lung nodules and cavities that form air fluid levels
rhodococcus equi infection
**mycobacterium tuberculoid - rarely has air fluid levels
rhodococcus equi
gram positive
aerobic nonmotile
bacillary bacteria
can form necrotizing pneumonia in immunocompromised
small facultatively anaerobic non-spore forming gram positive rod
listeria monocytogenes
listerolysin O
virulence factor of listeria monocytogenes
-allows it to escape phagolysosome of macrophage
ingestion of coleslaw, milk, cheese, butter, deli meats by pregnant women who then has neonatal death or premature birth
listeria monocytogenes
neonatal meningitis 2 weeks post partum
listeria monocytogenes
meningitis in baby first 3 months
listeria monocytogenes
E. coli
group B strep
meningitis in baby later in life
neisseria meningititis
haemophilus influenza
most common cause of meningitis in > 50 year olds
pneumococcus
most common cause of meningitis in patients with lymphoma, on corticosteroids, or receiving organ transplant
listeria monocytogenes
why does listeria monocytogenes affect immunocompromised and neonates
facultative intracellular organism
these patients cannot activate phagocytic clls
confirmation of bacterial meningitis
lumbar puncture
- high neutrophils
- high protein
- low glcose
- gram stain
schick test
injection of diptheria exotoxin into skin
-to determine whether a person is susceptible to infection by corynbacterium diptheriae
diagnosis of listeria monocytogenes
gram positive rods in gram stain
culture with cold enrichment
dark black colonies on potassium tellurite
corynbacterium diptheriae
babes ernst granules on loefflers medium
corynbacterium diptheriae
diptheriae
sore throat and fever with pseudomembrane in pharynx
myocarditis
neural involvement
