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;
6 Cards in this Set
- Front
- Back
|
What are the 2 gram-positive rods that don’t form spores?
|
Corynebacterium and listeria
|
|
|
Describe the clinical manifestations of a corynebacterium diptheriae infection?
|
Colonizes the pharynx, producing a grayish pseudomembrane. From this site, bacteria release exotoxin into the bloodstream, which specifically damages heart and neural cells by interfering with protein synthesis.
|
|
|
Culture requirements for corynebacterium diptheriae?
|
Potassium tellurite agar and Loeffler’s coagulated blood serum media
|
|
|
Treatment of diphtheria before culture results?
|
Antitoxin, penicillin or erythromycin, DPT vaccine
|
|
|
Listeria exhibits a tropism for…? Which groups are at risk? Why?
|
Nervous tissue meningitis. Neonates and immunosuppressed patients are at risk. They are unable to activate their phagocytic cells (which have swalled the facultative intracellular Listeria) due to inadequate cell-mediated immunity.
|
|
|
When meningitis develops in a patient who is at high risk for Listeria, what antibiotics do we add empirically?
|
Ampicillin or trimethoprim-sulfamethoxazole
|
