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Skin Infections
Overview
33
Astronomy
2nd Grade
03/26/2014

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Cards

Term
cellulitis s/s
Definition
+/- fever; increased WBC; mild lymphadenopathy; local tenderness; warmth and erythema; pain and tightness; swelling
Term
cellulitis likely causative bacteria
Definition
group A strep (most common bug encountered); staphylococcus aureus (particular inj drug users); clostridium perfringes (gas gangrene); haemophilus influenza (<5 yrs old)
Term
mild infections
Definition
OK to treat with oral agents: dicloxacillin (Dynapen) or cephalexin (Keflex)
Term
pen allergic patients:
Definition
clindamycin, macrolides, amoxicillin/Clavulanate +/- TMP/SMX
Term
more serious infections
Definition
IV nafcillin/oxacillin or cefazolin +/- gentamicin
Term
CLostridium perfringes
Definition
IV clindamycin (anaerobic coverage) plus IV Pen G and debridement
Term
skin infection txt duration
Definition
usually 7-10 days (or 4-5 after afebrile); should see improvement in 24-48 hours
Term
can occur in up to 30% of cases
Definition
bacteremia
Term
typically requires prolonged therapy with IV agents for 4-6 weeks (complication)
Definition
osteomyelitis
Term
skin infection complications
Definition
bactermia, osteomyelitis, lymphangitis, development of an abscess
Term
abscesses
Definition
stubborn to manage; consider when draining sinus tract present; tends to involve anaerobes (foul odor)- both surgical drainage and IV antibiotics are needed
Term
non-infectious differential diagnosis
Definition
systemic lupus erythematosis (SLE); significant allergy/rash; Rx-induced reaction (Red mans syndrome); significant dermatologic conditions (psoriasis, sunburn)
Term
papule
Definition
small, raised lesion, red/change skin color, SOLID (non-fluid filled)
Term
vessicle
Definition
small, raised lesion, FLUID-FILLED (ie blisters)
Term
Pustule
Definition
vesicle filled with pus (WBC = infection)
Term
Bulla
Definition
large vesicle (>25) *staph aureus
Term
Impetigo
Definition
mild infection, oral treatment
Term
Impetigo:
Definition
honey colored, crusted lesion around nose and mouth; pediatrics; superficial cellulitis (no permanent scarring); contagious (day care)
Term
Impetigo bugs
Definition
Group A strep (80%), far less staph auresus (10%)- Bulla
Term
Impetigo treatment
Definition
oral ceph-Keflex (both strep staph); Augmentin; Supportive: bactrobam - topical antibiotics helps with existing lesions
Term
erysipelas
Definition
facial cellulitis; adult infection on nose/cheeks
Term
erysipelas txt
Definition
more aggressive- IV mox
Term
erysipelas symptoms
Definition
bright red, hardened, painful, raised lesion
Term
erysipelas 1/3 of patients
Definition
have recent respiratory/viral infection
Term
erysipelas bugs
Definition
group A strep +/- staph
Term
erysipelas txt
Definition
cefazolin, oxacillin/nafcillin; want to see improvement in 24-48 hours otherwise return to doc
Term
cellulitis
Definition
deep level infection (epidermis/dermis); necrotizing fosiitis (Flesh eating bacteria)- may lead to amputation
Term
cellulitis symptoms
Definition
swelling, warm and red, painful, tight (on legs skin looks shiny due to hair follicles becoming damaged)
Term
2/3 of cellulitis patients
Definition
second degree to some sort of skin trauma
Term
cellulitis bugs
Definition
group A strep and staph; rare: clostridium perfringes (gas gangrene), H influenza (1-5 yr olds), gram -
Term
cellulitis txt for mild infections
Definition
oral beta-lactam; Keflex/dicloxacillin
Term
cellulitis txt for moderate-severe infections
Definition
N Abx: cefazoline, naficillin/oxacillin
Term
cellulitis: clostribium perfringes
Definition
clindamycin--> anaerobes, gram +
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