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;
17 Cards in this Set
- Front
- Back
|
General features of ALL Staphylococcus species
|
Gram +
Catalase + non-motile non-spore forming FACULTATIVE anaerobe tolerates high NaCl conc. |
|
|
Virulence factors of S. aureus
|
Coagulase
Leukocidin Entertoxins Lipases Hyaluronidase Protein A Hemolysins |
|
|
6 manifestations of disease caused by S. aureus
|
Skin infections
Food Poisoning Toxic Shock Syndrome Pneumonia Osteomyelits Gastroenteritis |
|
|
General characteristics of S. epidermidis
|
normal flora of skin and external mucosa, low virulence
Catalase + like all other Staph Coagulase - Novobiocin susceptible |
|
|
3 diseases caused by S. epidermidis
|
endocarditis
infections of prosthetics infections of IV site - sepsis |
|
|
General characteristics of S. saprophyticus
|
Assoc. w/ UTIs in young, sexually active females. unique binding property to epithelium of urethra or bladder
Catalase + like all other staph Coagulase - Novobiocin RESISTANT |
|
|
IDENTIFICATION OF STAPHYLOCOCCUS:
GRAM STAIN |
ALL CLINICALLY RELEVANT STAPH SPECIES ARE GRAM ++POSITIVE++
|
|
|
IDENTIFICATION OF STAPHYLOCOCCUS:
AGAR GROWTH (SBA, Mannitol Salt) |
SBA - White colonies
Mannitol Salt 7.5% NaCl - ALL Staph can grow - Yellow colonies |
|
|
IDENTIFICATION OF STAPHYLOCOCCUS:
Mannitol fermentation (S. aureus, epidermidis, saprophyticus) |
MANNITOL FERMENTATION:
S. aureus + S. epidermidis - S. saprophyticus +/- |
|
|
IDENTIFICATION OF STAPHYLOCOCCUS:
Catalase |
ALL CLINICALLY RELEVANT STAPH SPECIES ARE CATALASE ++POSITIVE++
|
|
|
IDENTIFICATION OF STAPHYLOCOCCUS:
Coagulase |
S. aureus +
S. epidermidis - S. saprophyticus - |
|
|
IDENTIFICATION OF STAPHYLOCOCCUS:
Novobiocin resistance |
S. epidermidis S
S. saprophyticus R |
|
|
Staph that are Tube coagulase positive:
|
S. aureus
S. intermedius S. hyicus S. delphini |
|
|
Staph that are Slide or clumping factor positive
|
S. aureus
S. intermedius S. lugdunensis S. schleiferi |
|
|
Coagulase negative GPC:
|
S. epidermidis
S. saprophyticus other Staph species Micrococcus sp. Stomatococcus (Rothia) |
|
|
Staphylococcus intermedius
|
-normal flora of dogs: DOG BITE INFECTIONS
-coag neg @ 24hr; VP neg (S. aureus +) |
|
|
Rothia mucilaginosus
|
Opportunistic infections
endocarditis in IVDA's -encapsulated, mucoid colonies -CATALASE NEG OR WK POS -Glucose fermenting (Micrococcus -) -no growth 5% NaCl (staph and micro are +) |
