Bact SSTI Flashcards
Impetigo causes
S pyogenes > S aureus
Bullous impetigo Causes
S aureus
Ecthyma causes
S pyogenes > S aureus
Furuncle causes
BOILS
S aureus
Carbuncle causes
S aureus
Folliculits causes
Many
Mostly pseudomonas
(also fungal)
Erysipelas causes
S pyogenes GAS
Cellulitis causes
S pyogenes > S aureus
Paronychia causes
S aureus > S pyogenes
Necrotizing Fascitiis causes
S pyogenes > C perf, mix anaerobes and S aureus
Staphylococcal Scaleded Skin Syndrome SSSS
S aureus
Osteomyelitis causes
S aureus
Septic arthritis causes
S aureus
Impetigo
Most superficial of bacterial skin infections; most common bacterial skin infection in children; vesicles lead to pustules (honey-crusts), bullae (blisters), erosions around mouth
Bullous Impetigo
Blisters filled with cloudy fluid and later rupture, resulting in erosions and crusting (contain bacteria
Ecythema
Slightly deeper form of impetigo with resultant scaring and ulceration; punched-out ulcerative lesions
Boil
Deep-seated abscess involving entire hair follicle and adjacent subcutaneous tissue; large, painful nodules with dead, necrotic tissue
Carbuncle
Multiple furuncles/boils coalesce and extend deeper in subcutanous tissue; chills and fevers
Folliculitis
Infection of hair follicle
Erysepelas
Acute skin infection; imflammation (warmth), lymph node enlargement; chills, fevers; demarcated borders, shiny
Cellulitis
Involves skin and deeper subcutaneous tissue; local inflammation and systemic symptoms (fever); no clear border
Paronychia
Localized, superficial infection or abscess of nailfolds; acute typically with s. aureus, strep or pseudomonas
Necrotizing fascitis
Acute infection of subcutaneous tissue; diffuse redness, due to deep tissue involvement; destruction muscle and fat
SSSS
Localized erythema that spreads over body in 2 days (Nikolsky sign in exfoliative stage) followed by large cutanous blisters containing clear fluid and desquamation
MRSA
Mostly skin infections
Osteomyelitis
Bone pain fever
swelling malaise
Septic Arthritis
Painful, erythematous joint with purulent material via aspiration in large joints
MRSA treat
Vancomycin 8-16 intermediate
SSSS treat
Fluids electrolyts
Oxacillin
Vancomycin
Necrotizing Fasciitis treat
Surgical debridment
antibiotics broad focus
Paronychia treat
Nafcillin
Oxacillin
Cefazolin
Remove foreign body
Carbuncle treat
Nafcillin, oxacillin, cefazolin; remove foreign body
Impetigo treat
Gentle debridgement of adherent crusts with soaks and topical antibiotics; with oral antibiotics
Bollous Impetigo treat
Gentle debridgement of adherent crusts with soaks and topical antibiotics; with oral antibiotics
Furuncle
Nafcillin, oxacillin, cefazolin; remove foreign body
Excthema
Gentle debridgement of adherent crusts with soaks and topical antibiotics; with oral antibiotics
S aureus
Gram + cocci in clusters; catalase +; non flagellate; non-motile; non-spore forming; coagulase +; white or golden color on plates; beta-hemolytic
S pyogenes
Gram + cocci in pairs or chains; catalase -; “A” lancefield antigen; Beta hemolytic; sensitive to bacitracin
Pseudomonas
Pseudomonas: gram - rod; motile; aerobic; oxidase +; non-fermenter; hemolytic on agar; produces diffusable pigments (pyocyanin, pyoverdin)
