Strep Pneumoniae And Viridans-Alpha Knight Tournament Flashcards
What is the result of gram staining with Strep pneumonia and viridians
Gram positive
What is the result of blood culture of Strep pneumonia and viridians
Alpha hemolytic, so partial hemolysis with a green hue (oxidation of hemoglobin)
What is the state of the capsule on Strep pneumonia
Polysaccharide capsule is present
What is the main virulence factor in Strep pneumonia
Capsule
What is the site of optochin sensitivity in Strep pneumonia
Optochin sensitive
What is the morphological feature of Strep pneumonia
Diplococci like a lancet
What is that characteristic of the sputum in Strep pneumonia
Rust colored sputum
What are the conditions that are caused by Strep pneumonia
#1 cause of MOPS M-Menigitis O-Otis media P-Pneumonia S-Sinusitis
What is a virulance factor that allows Strep pneumonia to enter the mucosa
Protease that can cleave IgA
Which condition is commonly seen to be at a higher risk of encapsulated bacteria
Those who have had their spleen removed, common in sickle celled individuals (aplesia)
What are the treatments for Strep pneumonia
- Macrolides
- Arithromycin
- Ceftriaxone (a cephalosporin)
What is the state of the adult vaccine for Strep pneumonia and viridians
23 valent vaccine and leads to IgM production, but is short term
What is the state of the children vaccine for Strep pneumonia and viridians
7 valance vaccine that elicits IgG production
What is the state of the capsule in Strep viridians
No capsule present
What is the state of optochin susceptibility in Strep viridians
Optochin resistant
What is the correction with bile and Strep pneumonia
Bile soluble, so can not grow
What is the correlation of bile and Strep viridians
Bile resistant, so it can grow
With regards to teeth, what is the association with Strep viridians
Dental carries (S. Mutans)
How is Strep viridians able to adhere to damaged heart valves
-Synthesizes dextran from glucose, which is able to adhere to platelets
What are the common locations of infection via Strep viridians (sanguineous)
Dextrans able to bind to patents in damaged heart valves, commonly the mitral valve
