week 5 - wound healing process Flashcards
what are the phases in the healing cascade?
bleeding
inflamation
proliferation
remodeling
what happens during the first 5-10 minutes after an injury?
clotting cascade
fibrinogin causing platlet aregration and clotting to block of the vessles
what happens during the inflamation stage of healing?
odeama, heat, nuetorphils and macrophages, redness
what happens in the proliforative phase of wound healing?
presence of granualtion tissue and epithelisation where the skin closes over
fibroglass- resposnible for new extracellular matrix to allow collegen and granualtion tissue to develop , wound contracture and epitheliam cell migration
what happens in the maturation/wound remodelling phase?
wound continues to contract and fibers reorganise
what are the tree types of wound healing methods?
primary, secondary and tertiary inetentions
what is primary intention wound healing?
fastest type of closure
useally small, low infection risk, low inflamation
cleaned, debrided and closed with sutures, glue, steri strips
usually acute presentations, normally less than 24 hpours of them occuring - ideally within 12 hours of wound
what is secondary intention wound healing?
where wound edges cannot be pulled back together - cant be sutrued
generally infected or lost a lot of tissue, late presentation wounds, location of wound
Require- full four phases of healing so granualtion is allowed to grow and fill in defect- nogoing cosmetic effect
what is primary tertiary wound healing?
when a wound is intentially kept open to allow for infection or swelling to respolve
delayed primary intention closure - could be left open for up to 10 days untill cleaned and debrided and then primary intention closure techneques used
what is primary closure of wounds?
dressings, suturing, staples, tapes, steri strips <24 hours
what are the early complications for wound healing?
seroma - collection of fluid located under surgical site, typically sterile, may feel a lump under the skin
heamotoma - collection of blood under skin and in tissue- usally on anti-coagulants
wound disruption
superficial wound infection
deep wood infection
mixed wound infection
what are the late complications of wound healing?
hypertrophic scars
keloid formation
necrossis
inflmatory infiltration
absesses
what are the steps in wound assessment?
history- moa, circumstances, first aid applied, tetnus injection?
wound examination - location, size, shape, margins, neurovascula, underlying structures, symptoms
what are the general classifications of woudns?
super ficial, partial thickness, full thickness, deep wound
what are the goals of wound care?
facilitate heamostasis
decrease tissue loss
promote wound healing
minimize scar fomration
