wounds Flashcards

1
Q

factors that affect wound healing

A
  1. age
  2. nutrition-need protein to build new tissue
  3. condition of tissue-infection slows healing
  4. efficiency of circulation-will interfere w/healing
  5. rest/activity/stress-stimulates the release of hormones slows healing
  6. medications-some drug slow down healing by stopping formation of fibrous tissue and impairs healing
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2
Q

wound assessment

A
  • inspect and gently palpate surrounding area/could be tunneling
  • note wound edges
  • note presence and characteristics of drainage
  • observe for signs of infection, redness swelling, increased tenderness,disruption of wound edges, body temp and wbc.
  • braden scale to assess wound- 16 or less-pt high risk for pressure ulcers
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3
Q

classification of wounds

A
  • incised-cut clean w/sharp instrument
  • lacerated-jagged, irregular edges
  • puncture-small opening in the skin (bullet, stab wound)
  • debridement-wounds don’t heal if infected, operation to cut out infected tissue (ex. wet to dry dressing)
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4
Q

wound discharge

A
  • serous drainage-clear, watery
  • sanguineous drainage-bright red, active bleeding
  • serosanguineous drainage-pale, red watery mix of serous and sanguineous
  • purulent drainage-thick yellow green,, tan or brown, sign of infected wound
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5
Q

wound

A

a disruption in the normal integrity of the skin

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6
Q

dressing changes

A
  • initial post-op dressing-circle drainage on dressing w/date & time to assess progression, reinforce dressing as needed
  • MD will change first dressing, call if saturated prior to first dressing change-keep track of number of pads patient is saturating
  • after initial change-change as needed
  • frequent dressing changes allow better observation of wound and eliminates dark and warm area that bacteria needs to grow
  • dry dressing-protects wounds from bacteria
  • wet dressing-provides way for bacteria to enter wound from outside
  • change pad every 8 hrs(shift)
  • changing pads-put in nurses notes
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7
Q

purpose of dressing

A
  • prevent contamination
  • absorb drainage
  • will support or splint wound site
  • protect from injury
  • promotes homeostasis if pressure dressing homeostasis stops bleeding
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8
Q

purpose for maintaining a wound dressing

A
  • eliminate conditions that favor growth of organisms
  • allows better observation and assessment
  • avoids adhesive tape reaction
  • avoid friction and irritation
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9
Q

dressing

A
  • telfa-special gauze that covers incision line and allows drainage to pass through and be absorbed by the center absorbent layer.It prevents other dressings to stick to wound and cause further injury when removed
  • transparent dressing-occlusive dressing decreasing the possibilities of infection while still seeing wound. Use over IV sites, central line sites, and healing wounds.
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10
Q

exudate

A
  • drainage
  • swelling-pain that occurs from drainage caused by accumulation of exudates
  • neutrophils-arrives first in the inflammatory cellular stage
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11
Q

granulation tissue

A
  • new tissue found in a wound that is highly vascular and bleeds easily
  • formed in proliferated phase
  • pink/red in color
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12
Q

scar

A

avascular collagen tissue that does not sweat, grow hair, or tan in sunlight

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13
Q

red wounds

A

wounds in the proliferation stage of healing that are the color of granulated tissue

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14
Q

eschar

A

necrotic tissue (death of tissue)

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15
Q

wound healing-surgical wound

PRIMARY INTENTION

A
  • wounds with little loss of tissue heal by primary intention
  • primary intention-the skin edges approximate or close-little tissue reaction-little scar formation-partial thickness wounds-risk of infection low
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16
Q

healing by primary intention has 3 phases

A
  • inflammation phase-reaction 1-4 days, leukocytes(WBC) invade area to digest bacteria. Platelets stop bleeding by coagulation and vasoconstriction
  • epithelial proliferation and migration phase: 4-7 days, starts at wound edges allowing for resurfacing and epitheal cells begin to migrate across wound.
  • reestablishment of the epitheal layers phase: new epithelium is only a few cells thick and so must reestablish normal skin thickness
17
Q

assessment of wound

A
  • when assessing a wound a scab notes the end of inflammatory phase of healing. Protein dries out at top of wound and forms a scab. Scabs provides safety for wounds
  • find purulent drainage-there is a problem in wound healing
  • to promote healing-high vitamin C and protein
18
Q

wound healing (decubitus, ulcers & burns) Secondary Infection

A

SECONDARY INFECTION

wound w/extensive tissue loss heal by secondary intention-takes longer to heal-chances of infection are greater

19
Q

healing by secondary infection(3 phases)

A
  • inflammation phase: 1-3 days, leukocytes (WBC) invade area to digest bacteria. Platelets stop bleeding by coagulation and vasoconstriction.
  • proliferation phase: 3-24 days, new granulated tissue fills in wound, contraction of wound by epithealization occurs which covers wound fibroblast produce collegen-mixes w/granulated tissue that close wound, collegen provides strenghth and structural integrity to wound.
  • maturation phase-(remodeling) 21 days to months to a year, collage scar continues to reorganize and gain strength heal wound does not have the strength that the tissue it has replaced
  • more healing needs to take place-why is it longer
  • you pack wound so top won’t grow over a deep wound-grow from bottom to top
20
Q

wound healing-third intention

A

delayed wound closure-done deliberately by surgeon to allow for effective drainage and cleaning of contaminated wounds, wound is surgically closed after all evidence of edema and wound debris have been removed

21
Q

keloid

A
  • when a wound is extensive and requires excessive granulated tissue for closure
  • large uneven scar is formed
22
Q

complication of wound healing

A
  • infection: purulent material drains from it, SURGICAL WOUND INFECTION does not develop until 4th or 5th day post-op. Symptoms-fever, increase WBC, pain and tenderness around the wound site, wound edges inflamed and purulent drainage present
  • wound dehiscense: partial or total separation of wound layers at suture line. risk factors: obesity, poor nutritional status
  • wound evisceration: total separation of wound layers, protrusion of intestines through wound opening. MEDICAL EMERGENCY nurse should place sterile towels soaked in sterile saline over the extended tissue and call MD. Head of bead-low position-knees flexed-decrease pull on suture line-RISK FACTORS-infection, poor hygiene, dehydration, excessive coughing, obesity.
  • fistulas-abnormal passage from internal organs to skin or from one internal organ to another
23
Q

prevention

A
  • abdominal binder
  • prevent straining
  • splint wound with pillows for coughing