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16 Cards in this Set

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Define wound
break in normal structure of tissues
Steps in wound healing
wound
bleeding

constriction, then dilation

plasma proteins, WBC, antibodies enter site
Scab
dried up blood, protects wound
1st intention healing
ideal, sx incision
well apposed epithelial cells

2 days: bridged, debris largely eliminated, fibroblasts apear & produce collagen fibers

Day 4-5: continue to lay fibers

Day 10: layers strong enough to hold themselves (SR)

1 month: fibroblasts gone
2nd intention healing
scab
apposition
fibroblasts & collogen form under scab
cells move to close the wound

Day 5-6: wound shrinks
Define apposition
budding of tissue in correct manner
Factors increasing healing time
movement
bacterial contamination
licking
age
disease
Stages of wound healing
inflammatory
debridement
repair
maturation
Inflammatory Phase
time of wounding
bleeding removes debris
clot provides stability
chemical mediators released
influx of WBC, RBC, plasma proteins

redness, pain, heat, swelling
Debridement Phase
WBC attack debris
Repair Phase
capillaries form
granulation
epithelial cells migrate
early wound strength (15 days)
Maturation Phase
collagen fibers remodelled
scar contracts
over year
80-85% skin & fascia strenght returned
Clean wound
elective sx
aseptic
Clean contaminated wound
residual bacterial flora
asceptic technique

bone fracture, intestinal tract contents
Infected wound
inflammed, contaminated, a lot of bacteria

abcess, FB, puss
3rd intention healing
delayed primary closure
contaminated/infected
sx debridement of tissue