Staph Aureus-Golden Staff Of Moses Flashcards
What does Staphylococcus mean
Grape like
What does aureus mean
Golden in color
What is the result of Gram staining with Staphylococcus aureus
Gram positive
What is the state of catalase in Staphylococcus aureus
Present
What is the state of coagulase in Staphylococcus aureus
Positive
What is the result of Staphylococcus aureus on a blood agar plate
Beta hemolytic
What is the result of Staphylococcus aureus on a mannitol plate
Ferments mannitol and therefore plate will turn yellow
What is the best test to run to differentiate Staphylococcus aureus from strep
Staph is catalase positive while strep is not
What is the best way to differentiate Staphylococcus aureus from the other Staphs
- Coagulase positive
- Beta hemolytic
- Ferments mannitol salt
What is the function of protein A in Staphylococcus aureus
Component of the cell wall that binds to the Fc of antibodies and prevents immune response
What is the main virulence factor in Staphylococcus aureus
Protein A
Where is the place that Staphylococcus aureus will colonize
Nares, aka nose
What are the symptoms of Staphylococcus aureus
- Pneumonia (caused by the secondary viral infection)
- Erythematous abscesses/boils
- Bacterial endocarditis
- Scalded skin syndrome
- Toxic shock
What is the mechanism that Staphylococcus aureus can lead to pneumonia
Infections via a secondary viral infection
What is the most common cause of septic arthritis in adults
Staphylococcus aureus
What is the capsule morphological shape f the virus that causes pneumonia secondary to Staphylococcus aureus infection
Icosahedral
What with Staphylococcus aureus look like on X-ray
Patchy infiltrate in the lungs
What population is most commonly seen to have Staphylococcus aureus caused endocarditis
IV drug users
What are the characteristics of the Staphylococcus aureus caused endocarditis
- Rapid onset
- Most Common on the right side, particularly the tricuspid valve
- seen in IV drug users
What is the most common cause of osteomyelitis in adults
Staphylococcus aureus
What are the characteristics of Staphylococcus aureus that lead to food poisoning
Staphylococcus aureus contains preformed toxins, so works immediately
What is the clinical presentation of Staphylococcus aureus caused food poisoning
Usually more vomiting than diarrhea
How does Staphylococcus aureus alter to become MRSA
Alters the penicillin binding protein that builds the cell walls
What is the treatment for Staphylococcus aureus
Vancomycin, Nafcillin
