Exam ! Flashcards
repair phase
(pie crust)- scar formation
- fill in subcutaneous tissue & muscle tissue c scar tissue
how long for most wounds to heal?
2-4 wk
inflammatory phase
time: 4-6 days
clear away dead cells and bacteria
first vasoconstriction then vasodilation
hemostasis
inhibits O2 of surrounding tissue: vascocontriction
macrophages function
phagocytosis
proliferation phase time frame
time: 4-6day -> 21 days (week 1-3)
stages of proliferation phase
re-epithelialization- new skin
fibroplasia- granulation (cake mix)
neovascularization- new blood supply
contraction- decrease wound size
fibroplasia
(proliferation phase)- granulation
- make collagen: make component of granulation tissue
contraction
process occurs as wound closes due to loss of tissue
maturation/remodeling phase
Time: 21-> 2-3 yrs
tensile strength
collagen and elastin formation
abrasions
caused by tangential shearing of skin by rough surface
ex/ MVA - road rash
primarily partial thickness : epidermis & dermis
avulsion
portion of skin caught on sharp object while body is moving away & flap of skin is removed
crush wounds
heavy object falls onto a portion of a person’s body, splits the skin & may even shatter or tear underlying structures
open fractures
sharp piece of bone penetrate & teat surrounding soft tissue & skin which created an open wound
cuts/incisions
characterized by slice wound created by a sharp object which leaves straight/even edges
3 basic mechanisms of laceration
1) shearing
2) tension
3) compression
puncture wound
deep & narrow wound created b a sharp object such as nails, knives, or animal teeth
- high risk for contamination & infection
flame, scald, contact, electrical, chemical, frostbite are types of:
chemical burns
trauma
insult to the wound that may delay or interrupt healing process
- wet to dry is trauma
inflection
all wounds are colonized c infection but not all infected!
- not causing active infection- oral antibiotics are useless
nutrition
need nutrition consult
malnourished pt. is more suscetiptible to infection & high risk for skin problems & retarded wound healing
oxygenation/purfusion
wounds wont heal s O2
bariatric skin
circulation can be compromised bc blood does not travel as efficiently thru fatty tissue
delayed repair due to impaired skin barrier
regeneration
tissue replace c like tissue-
- Superfical wounds of epidermis - partial thickness: dermis & epidermis
Dermatitis
- contact dermatitis: intermittent burning pain and pruritus around the ulcer
- Pruritus is severe itching often associated with an allergic response
Ex] - residual limb reveals erythema & edema- unable to wear prosthesis - itchy & painful
cellulitis
- supportive inflammation of dermis & subcutaneous tissues; frequ accompanied by infection
- red, hot, swollen, and tender and the patient has a fever
Maceration
- the softening and breaking down of skin resulting from prolonged exposure to moisture
- caused by excessive amounts of fluid remaining in contact with the skin or the surface of a wound for extended periods.