wounds Flashcards
how often is skin renewed
every 30 days
define ulcer
a crater like lesion of skin or mucous membrane
what happens in the maturation phase of healing (months-years)
capillary regression, collagen remodelling
what 3 factors contribute to wound healing?
LOW level of bacteria
HIGH level of ECM (extra cellular maintenance) & growth
LOW level of cytokines
what happens in the proliferative stage of healing
angiogenesis ( new blood vessels formed) fibroplasia (type 3 collagen turned to type 1) wound contractor (myofibroblasts & fibroblasts pull edges of wound together)
categories of pressure ulcers:
non blanchable erythema of intact skin
partial thickness skin loss involving epidermis
full thickness skin loss involving subcutaneous tissue
damage to bone
which ulcers are the less likely to heal
arterial ulcers
what are the goals of an arterial ulcer
revascularize and maintain ulcer
what are some signs of an arterial ulcer
sloughy, necroctic
pain/burning
changes to nail skin and hair
cold dry skin
venous ulcers are 80% of all ulcers. true or false
true
what causes venous ulcers
valve failure & muscle pump failure
what are some signs of diabetic ulcers
dry cracked skin
structural deformity
loss of protective sensations and motor output
what are the goals of diabetic ulcers
control blood sugar
make lifestyle changes
what is the appearance of a venous ulcer
atrophe blanche
irregular wound edge
spider veins
what are the goals of venous ulcers
to drain and prevent pooling of blood