Wound Healing, Sutures, Needles, and Staples Flashcards
Incision made under ideal surgical conditions, no entry to GI tract
Class I: Clean (1-5% infection rate)
Primary closer with wound drain, controlled entry into GI tract
Class II: Clean-Contaminated (8-11% infection rate)
Open, traumatic wound that’s less than 4 hours old, Entry into GI tract with spillage
Class III: Contaminated (15-20% infection rate)
Open traumatic wound that’s more than 4 hours old, Perforated viscera
Class IV: Dirty/infected (27-40% infection rate)
Abrasion
Scrape
Contusion
Bruise
Laceration
Cut or Tear
Punture
Penetration
Thermal
Heat or Cold (can be chemical)
Signs of inflammation
Pain, Heat, Redness, Swelling, and Loss of function
Healing occurs from side to side where dead space has been eliminated and wound edges have been accurately approximated
1st Intention (Primary Union)
Ist phase of primary union
Lag Phase (inflammation) immediately after injury and lasts 3-5days
2nd phase of primary union
Proliferation Phase Collagen produces fibers occurs between days 3-20days
3rd phase of primary union
maturation or Differentiation Phase, tissue slowly increases in tensile strength and formation of new blood vessels. Occurs on the 14th day
Healing that occurs in large wounds that can’t be directly approximated. Causes a weak union and irregular scar (may result in herniation
Second Union (Granulation)
Healing that occurs when the wound is left open to heal on either side by granulation. once the wound is infection free it’s left to heal by primary union
Third Intention (Delayed Primary Union)
Physical conditions of a PT that effects wound healing
Age, Nutrition, Disease, Smoking, Radiation, Immunocompromised
Dehiscence
Partial or total separation of layers of tissue after wound closure