Test 1 Flashcards
(40 cards)
Three phases of healing
Inflammation
Proliferation
Maturation/Remodeling
PMNs (polymorphonuclearneutrophils)
1st to site of injury, kill bacteria, clean wound, degrade debris
Macrophages
kill pathogens, direct repair process
Mast cells
produce histamine and secrete enzymes to accelerate riddance of damaged cells
Angioblast
New blood vessels
Fibroblast
lay down extracellular matrix
myofibroblast
pull wound margins together
maturation of tissue healing
type 3 collegen replaced by type 1, up to 2 years following wound closure, 80% full strength, no sweat, less sensitive.
Age slowing healing
slowed immune response, decreased collagen synthesis, skin atrophy, less sweat, decreased pain perception
Systemic factors
Immunocomprimised: HIV/AIDS
Oxygen perfusion: PVD, Anemia, COPD, Cardiac Conditions.
Medications delay healing
Steroids, chemotherapy, NSAIDS.
Clinician induced factors affecting healing
Prolonged use of antiseptic
Wrong dressing selection
Failure to detect infection
Poor wound exploration
Poor temp management
Three wound closures
Primary Intention: Wound edges are closed directly with sutures, staples, or glue for quick healing.
Secondary Intention: Wound is left open to heal naturally from the inside out.
Tertiary Intention: Wound is initially left open and later closed after ensuring it is clean.
DIME
Debridement: safe to debride?
Inflammation: What stage?
Moisture balance: Tissue type, masceration?
Edge effect: Stalled/rolled(Epibole), Callus, Attached.
Key questions within history specific to wound care
General Demographics
Lifestyle and Functional Status
Past and Current Medical History
Test and measures for wound assessment
location, dimensions, tissue type, wound edges, drainage, odor, periwound skin, edema.
Undermining, tracts, and tunnels
Undermining: tissue under wound edge is eroded.
Tracts: narrow passageway, extension of wound
Tunnels: entrance and exit
Wound bed tissue types
Undermining documentaion
Document the length of undermining using the clock method to note location.
Ex. Underming noted measuring 4.2 cm from 12 oclock to 3 oclock.
Wound edges examples
Four types of drainage
Serous: Clear-pale yellow watery, protein rich
Sanguineous: Blood or drying blood, red dark brown.
Serosanginous
Purulent: Indicator of infection, white-pale yellow, viscous or creamy
Documentation: Type, color, consistency, amount.
Acute vs Chronic Wound
Acute progress sequentially through the natural phases of healing in timely manner.
Chronic do not progress sequentially through healing; frequently stuck in inflammatory phase.
Wound bed preparation model
How to tell if a wound is healable?
Adequate blood supply