BACTERIAL INFECTIONS OF THE SKIN 0.0 / 5 ? BiologyMedical MicrobiologyUniversityNone Created by: RoseCreated on: 19-05-14 08:32 What are the two commonest bacteria causing skin infections? Staphylococcus aureus & Group A Streptococcus 1 of 21 What does "SSTI" mean? "Soft Skin / Tissue Infection" 2 of 21 Name some innate immune mechanisms of the skin: Low pH (5.0-6.0), Normal flora residing, Secretions (Sweat, sebum) 3 of 21 Name two common skin infections Folliculitis (Boils), Impetigo 4 of 21 What is folliculitis? Imflammation/infection of the hair follicles 5 of 21 What commonly leads to boils? A break in the skin 6 of 21 What is the commonest cause of folliculitis? S. aureus 7 of 21 Name a rare complication of folliculitis Abscess 8 of 21 What is impetigo? A skin infection leading to pustules that burst and form crusty lesions 9 of 21 Name the two commonest agents that cause impetigo S. aureus, Streptococcus pyogenes (Group A Strep) 10 of 21 Name two less common skin infections Cellulitis (Erysipelas) & Necrotising fasciitis (Flesh eating bacteria) 11 of 21 What is cellulitis? Infection of subcutaneous tissue 12 of 21 What is a complication of cellulitis? Can spread to blood 13 of 21 What are the two commonest agents causing cellulitis? S. aureus, S. pyogenes (Group A Strep) 14 of 21 What is the commonest agent causing necrotising fasciitis? S. pyogenes 15 of 21 What are two less common agents causing necrotising fasciitis? Clostridium perfringens & Vibrio vulnificus 16 of 21 What are the two common agents causing wound infections? S. aureus, S. pyogenes 17 of 21 Name two ways a wound infection is diagnosed Wound swab / Tissue Aspirate 18 of 21 What is the problem with a wound swab? Also grows normal flora 19 of 21 The normal flora of the skin are usually _____ Gram + 20 of 21 Name some common flora of the skin Coagulase negative Staph, Candida, SOMETIMES S. aureus, Viridans streptococci 21 of 21
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