DERM - Vascular diseases of the skin Flashcards
definition: stasis dermatitis
erythematous, pruritic, scaling patches on lower extremities due to impaired VENOUS circulation (chronic changes in lower extremities include edema, skin hyperpigmentation and ulcer formation)
what is the appearance of vasculitis?
palpable purpuric papules
arterial ulcers are caused by ________
PAD
- punched out well demarcated edges and a pale base
- minimal exudation
arterial ulcers
what is the treatment for arterial ulcers?
- refer to vascular surgeon
- lifestyle mods
what is a normal ABI value range?
0.9 - 1.2
what are the options for starvation disorders?
- prevent
- restore
- amputate
what is a cutaneous marker of venous insufficiency?
stasis dermatitis
when does venous stasis occur?
when valves in the deep or perforating veins become incompetent, causing reflux into the superficial system (venous HTN)
what are late signs of venous insufficiency?
- lipodermatosclerosis
- venous ulcers
- scars that appear porcelain white and atrophic
what is lipodermatosclerosis? it is associated with what condition?
- subcutaneous fat is replaced by fibrosis that eventually impedes venous and lymphatic flow leading to edema above the fibrosis
“inverted champagne bottle legs” is due to:
lipodermatosclerosis
does purpura blanch when pressed?
no
what is the etiologic agent of infectious purpura?
n. meningitidis
palpable purpura results from inflammation of _____________
small cutaneous vessels
