Gram-positive — Flashcards

Flashcard 11: scarlet fever

Answer: S. pyogenes infection

Extra: erythematous rash sparing face, strawberry tongue, erythematous throat

Flashcard 12: Group A strep are _____ to bacitracin.

Answer: sensitive

Flashcard 13: Group B strep are _____ to bacitracin.

Answer: resistant

Flashcard 14: Strep pyogenes is a Group _____ streptococcus.

Answer: A

Flashcard 15: Staphylococcus aureus

Answer: +

Extra: cocci in clusters++skin infections, abcesses, pneumonia, endocarditis, osteomyelitis, toxic shock syndrome, scalded skin syndrome, food poisoning

Flashcard 16: Staphylococcal Toxic Shock Syndrome Toxin (TSST) is a superantigen that binds to _____ and _____.

Answer: MHC II

Flashcard 17: toxic shock syndrome

Answer: Staph aureus toxin

Extra: fever, vomiting, rash, desquamation, shock, and organ failure in the setting of Staph aureus infection

Flashcard 18: Staphylococcus epidermidis

Answer: +

Extra: cocci+-novobiocininfects prosthetic devices, IV catheters, contaminates blood cultures

Flashcard 19: Streptococcus pneumoniae

Answer: +

Extra: lancet-shaped diplococci-optochinmeningitis, otitis media, pneumonia, sinusitis

Flashcard 20: Clostridium difficile

Answer: +

Extra: bacillianerobepseudomembraneous colitismetronidazole or oral vancomycinToxin A, Toxin B