Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
24 Cards in this Set
- Front
- Back
|
List some features of staphylococcus
|
gram positive cocci, catalase positive (all produce catalase), salt tolerant (up to 7.5% NaCl)
|
|
|
Staphylococcus is relatively resistant to:
|
disinfection, desiccation, antimicrobics
|
|
|
Describe S. aureus
|
yellow or gold colonies, mannitol positive, hemolytic, DNAse positive, coagulase positive
|
|
|
hemolysin
|
luses erythrocytes
|
|
|
leucocidin
|
lethal to leukocytes
|
|
|
exfoliative toxin
|
scalded skin syndrome
|
|
|
enterotoxin
|
preformed, heat stable vomitotoxin, an intoxication
|
|
|
coagulase
|
produces fibrin clot which protects bacteria
|
|
|
hyaluronidase
|
spreading factor that destroys hyaluronic acid
|
|
|
staphylokinase
|
fibrinolysin
|
|
|
DNAse
|
nuclease
|
|
|
lipase
|
digests lipids and lipoproteins
|
|
|
protein A
|
binds to immunoglobulins
|
|
|
List the virulence factors of staphylococcus
|
hemolysins, leucocidins, exfoliative toxin, enterotoxin, coagulase, hyaluronidase, staphylokinase, DNAse, lipase, penicillinase, Protein A
|
|
|
furuncles
|
boils
|
|
|
what is the other term for boil
|
furuncle
|
|
|
what is the name for a tunneling skin abscess?
|
carbuncle
|
|
|
what is the name for fluid filled vesicles
|
impetigo contagiosum
|
|
|
what is the name of the infectious disease that is pus-forming?
|
pyoderma
|
|
|
List the five types of invasive staph infections
|
osteomyelitis, septicemia, pneumonia, enterocolitis, endocarditis
|
|
|
enterocolitis
|
type of staph superinfection
|
|
|
describe toxic shock syndrome
|
caused by toxic shock syndrome toxin I (TSST I), causes fever, vomiting, hypotension, rash, can occur in any age and sex
|
|
|
describe the transmission of staph
|
direct transmissions, with nosocomial infections common. Reservoirs include the skin and nose
|
|
|
how is staph identified in the lab?
|
MSA; the salt selects for staph. Fermentation differentiates between aureus and epidermidis. Aureus is nearly always coagulase positive. Phage typing identifies strain.
|
