pyogenic skin infections Flashcards
Identify common microbial causes of pyoderma, impetigo, erysipelas, cellulitis, fasciitis, myositis, and osteomyelitis. Diagnose staphylococcal and streptococcal infection by microbiological lab results.
primary causes of skin and soft tissue infection
staph a/ strep pyogenes
coagulase positive gm + cocci
staph auerus
causes folliculitis
S aureus
infection confined to epidermis
folliculitus
causes furuncles
S aureus
treatment for furuncles
small - moist head to promote drainage
large - incision and drainage
carbuncles def:
multiple furuncles forming together
furuncle def
boil (deep folliculitis into the dermis)
treament for carbuncle
incision and drainage
treatment for s pyogenes
penicillin
def inpetigi
superficial pyoderma with discrete borders - mostly in kids
casues of impetigo
s aureus/s pygogenes
discrete bordered skin infection with thick, honey colored crust
impetigo
treatment for impetigo
topical muprocin or fusidic acid. oral antibiotic if extensive
MOA of mupirocin and fucidin
protein sythesis inhibitor
fucidin combined with
rifampin
causes scalded skin syndrome and bullous impetigo
staph A
area to culture for scalded skin
nasppharyngeal culture
localized scalded skin syndomr
bullous impetigo
causes erysipelas
S pyogenes
def erysipelas
superficial form of cellulitus
skin infections that can spread rapidly by the hour
erysipelas
poorly demarcated infection of subQ tissue
cellulitus
cause of cellulitis
s pyogenes/S aureus
