Dermatology Flashcards
What are pressure sores?
develop in patients who are unable to move parts of their body due to illness, paralysis or advancing age
What are predisposing factors for pressure sores?
malnourishment
incontinence
lack of mobility
pain (leads to a reduction in mobility)
What score is used to screen for at risk pts for pressure sores?
Waterlow score comprising body mass index, nutritional status, skin type, mobility and continence
Where do pressure sores generally form?
Over bony prominences
What are the different grades of pressure sore?
Grade 1-4
What is a grade 1 pressure sore?
Non-blanchable erythema of intact skin. Discolouration of the skin, warmth, oedema, induration or hardness may also be used as indicators, particularly on individuals with darker skin
What is a grade 2 pressure?
Partial thickness skin loss involving epidermis or dermis, or both. The
ulcer is superficial and presents clinically as an abrasion or blister
What is a grade 3 pressure sore?
Full thickness skin loss involving damage to or necrosis of subcutaneous tissue that may extend down to, but not through, underlying fascia.
What is a grade 4 pressure sore?
Extensive destruction, tissue necrosis, or damage to muscle, bone or
supporting structures with or without full thickness skin loss
How are pressure sores managed?
Hydrocolloid dressings/Hydrogels for moist wound environment to promote healing
Pressure reducing aids/repositioning
ABs if indicated
Surgical debridement
What are the features of venous ulcers?
Generally above the ankle Painless At risk after prev DVT and varicose veins Doppler US used Managed by 4 layer compression banding
What are the features of arterial ulcers?
Occur on the toes and heel Painful There may be areas of gangrene Cold with no palpable pulses Low ABPI measurements
What are features of neuropathic ulcers?
Commonly over plantar surface of metatarsal head and plantar surface of hallux
Most commonly leads to amputation in diabetic patients
Due to pressure
Management includes cushioned shoes to reduce callous formation
What is onychomycosis?
Fungal infection of the nails
What is paronychia?
Acute infection of nail folds and periungal tissues caused by staph a