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13 Cards in this Set
- Front
- Back
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Impetigo
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Intraepidermal
GAS S. Aureus - Kids - “Golden crusts” |
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Folliculitis
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Hair follicle
S. aureus Pustules |
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Furuncles
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Hair follicle
S. aureus Develops from folliculitis Deeper nodule that becomes an abscess |
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Carbuncles
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Hair follicle -> subcutaneous fat
S. aureus Develops from furuncles Acutely ill Multiple tracts draining pus |
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Ecthyma
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Intraepidermal -> epidermis -> dermis
GAS - “Punched-out” ulcers` |
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Cellulitis
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Cutaneous & subcutaneous tissues
GAS, S. aureus (MRSA) Spreading infection portal of entry associated lymphangitis with GAS |
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Erysipelas
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Superificial cellulitis with lymphatic involvement
GAS Lymphatic obstruction is risk factor Sharp demarcation of bright red lesion |
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Necrotizing fasciitis
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Subcutaneous soft tissues, fascia, muscle
Type I: polymicrobial anaerobes, GNB, non-A Strep) Type II: GAS LIFE-THREATENING!! Pain >> physical findings Rapidly progressing Urgent surgical intervention Purplish bullae Fournier’s gangrene: scrotom/perineum |
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Clostridial myonecrosis
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Muscle
Clostridium perfringens “Gas gangrene” Contaminated wounds LIFE THREATENING Severe pain Skin crepitus Foul odour Gas on plain Xray |
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Septic arthritis
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GBS, GNB, S. aureus (infants)
- Gonorrhea (young adults) - S. aureus (adults) Synovial fluid exam Disseminated gonococcal infection: polyarthritis & tenosynovitis (synovial cx neg, blood cx pos) Gonococcal arthritis: monoarticular (synovial cx pos, blood cx neg) Pain on joint extension Know predisposing factors |
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Septic bursitis
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- S. aureus
Aspiration of bursa Pain on joint flexion |
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Osteomyelitis – hematogenous
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S. aureus
Group A/B Strep E. coli (infants) H. flu (children) Pseudomonas (IVDU) Blood culture, bone bx Hematogenous spread most common etiology of osteo in kids |
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Osteomyelitis – contiguous focus
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- S. aureus (no vascular insufficiency)
- Polymicrobial (vascular insufficiency) Bone bx No vascular insufficiency: direct inoculation 2o to trauma Vascular insufficiency: minor trauma (diabetics) |
