Superficial Infection浅表感染.pptVIP

Staphylococci—G+ beta hemolysins Suppuration and Characteristic pus thick, yellow, without foul smelling S. aureus – furuncle carbuncle S. epidermidis – after surgery with foreign material Obesity Diabetes Poor hygiene condition Intravenous drugs Infection involving an entire hair follicle and the underlying skin tissue Face Buttocks Thighs Groin Breast Axil area 2cm raised, tender, shiny, bright red intense, throbbing pain yellow or white creamy discharge (matured) A confluent infection involving multiple contiguous follicles limited to the subcutaneous tissue thick overlying skin and dense subcutaneous fascia Back of Neck or Torso Pain, swelling, induration of the surrounding skin Multiple small abscess with yellow thick pas Fever, fatigued, leukocytosis, even sepsis Leision care help to “mature” Surgical incision drainage Large deep enough incision for carbuncle Antibiotics Penicillin Erythromycin Clindamycin good hygiene condition avoiding intravenous drug loose clothing Connective tissue dermis and subcutaneous tissues acute spreading pain, erythema, edema, and warmth trauma or surgery causing a lesion in the skin may have no discernible dermal injury develops over a period of several days The affected area Warmth Erythema Edema Tenderness The proximal to the area Ascending lymphangitis lymphadenopathy Significant erythema An eroded area near the center Irregular margins but not raised An ulcerated area in the center Painful and warm to the touch normal group A streptococci Staphylococcus aureus Infants group B streptococci Immunocompromised Pneumococcus gram-negative rods or fungi Wounds Aeromonas hydrophila, gram-negative rod Bacteremia Local abscess Superinfection with gram-negative organisms Lymphangitis Thrombophlebitis Facial cellulitis in children (meningitis in 8%) Gas gangrene(amputation mortality in 25%) Escherichia coli in nephrotic syndrome Cellulitis of the lower extremities in geriatric patients (thrombophlebitis) Pseudo