wound care Flashcards

1
Q

abrasions

A

scraping away of the outer layer of epidermis: mild road rash

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2
Q

lacerations

A

skin is sliced open (cut on wire, piece of metal)

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3
Q

surgical incisions

A

scalpel

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4
Q

puncture wounds

A

sticks, wire, nail, tree branch

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5
Q

penetrating wounds

A

these connect to a body
cavity (example: thorax)

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6
Q

avulsion injuries

A

Tearing of tissue from its
attachments. HBC

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7
Q

contusions

A

bruises; stays in body (closed wound)

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8
Q

crushing injuries

A

doesn’t expose body’s inner tissue to outside world (closed wound)

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9
Q

clean

A

Surgically created under aseptic conditions. Minimal trauma. These wounds are sutured

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10
Q

clean contaminated

A
  • Surgical wound with minor break in sterile technique.
  • Surgery in which the intestinal, urinary or respiratory tracts
    are entered
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11
Q

contaminated

A
  • Open traumatic wound or a surgical wound with a major break in sterile technique
  • Colon surgery
  • Needs aggressive cleansing and treatment.
  • Dogfight wounds, gunshot wounds, degloving injuries
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12
Q

infected

A
  • Old traumatic wound or high bacterial count ( > 105 /gram tissue)
  • Perforated viscera. Purulent discharge.
  • Intensive treatment
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13
Q

how to treat small animal wounds

A
  • stablize patient
  • remove debris
  • debride
  • manage wound drainage
  • protect wound through healing
  • clip around wound
  • cleanse around wound
  • lavage
  • pain management and closure
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14
Q

3 stages of wound healing

A
  1. Inflammatory phase
  2. Proliferative phase
  3. Remodeling phase(maturation phase)
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15
Q

inflammatory phase

A

(immediate, lasts 3-5 days)
- Blood is released, platelets aggregate, fibrin clot forms (hemostasis)
- Growth factors released - Macrophages & neutrophils are recruited
- Remove bacteria & cellular debris
- Erythema, swelling, heat and pain develop

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16
Q

proliferative phase

A

(starts at 2-3 days; lasts several weeks)
- Granulation, Contraction & Epithelialization occurs
- Fibroblasts migrate to wound
- More growth factors releases, stimulate proliferation & recruitment of these cells
- Extracellular matrix is produced

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17
Q

remodeling/maturation phase

A

(begins 3 weeks after injury; lasts months to years)
- Remodeling and realignment of collagen fibers
- Wound gains strength – most likely never be as strong as normal

18
Q

extracellular matrix

A
  • Meshwork-like substance attached to outer cell surface
  • Support and anchorage of healing compounds/cells
19
Q

granulation tissue and characteristics

A
  • Consists of fibroblasts & myofibroblasts, endothelial cells,
    inflammatory cells & new blood vessels & extracellular matrix
  • Pink to red in color, shiny and bleeds easily
  • Not painful
  • Infection is unlikely to occur
  • Fibroblasts deposit collagen in wound for strength
  • provides oxygen, moisture, and a surface for epithelial cells to proliferate and cross
20
Q

epithelialization

A

coverage of wound by epithelial cells

21
Q

wound contraction (beginning and end)

A

myofibroblasts contract within the granulation tissue (begins 1 week after injury; lasts several weeks)

22
Q

healing as it relates to tensile strength

A

load capacity - how much weight, pressure, movement it can handle

23
Q

proud flesh (can it be controlled)

A

Body creates too much granulation tissue

Can control by:
Immobilizing limb (cast)
Wound bandaging
Caustic agents
Surgical excision

24
Q

factors affecting wound healing

A
  • health and age of patient
  • type of injury
  • tissue affected
  • contamination level
  • increased wound exudate
  • tension on wound or movement of surrounding tissue
  • time and method of treatment
  • re-injury during healing process
25
Q

time it takes for an uncomplicated wound to heal

A

couple weeks (?)

26
Q

first intention

A
  • primary closure
  • Healing of a wound when the skin edges reattach to each other
  • for clean or clean contaminated wounds
27
Q

delayed primary closure

A
  • Closure or suturing is delayed for a couple of days before granulation
  • for wounds older than 8 hours
28
Q

secondary closure

A
  • Surgical closure of a wound after granulation tissue is established
  • for heavily contaminated wounds, necrotic wounds, failed primary closure wounds
  • may require drains
29
Q

second intention

A
  • Wound is allowed to heal without closure (open)
  • for heavily contaminated or infected wounds
  • more scar tissues and heals slower
30
Q

fast healing tissues

A
  • GI tract, especially the mouth
  • Skin-Usually heals in 7 days if properly apposed and not infected
31
Q

slow healing tissues

A
  • Bone- if well stabilized and well apposed; Takes 4-6 weeks to heal
  • Tendon, ligaments, fascia-heal VERY slowly
32
Q

variable healing tissues

A

Muscle-heals by fibrous (scar) tissue replacement

33
Q

dehiscence

A

Amount of devitalized tissue present

34
Q

factors leading to dehiscence

A
  • Long surgical procedure
  • Poor blood supply- lack of nutrients, WBC’s
  • Foreign material present
  • Infectious organisms-type and quantity: eg: MRSA
35
Q

when is a wound considered infected

A

when the bacterial count is >100,000 organisms/gram of tissue

36
Q

factors leading to infection

A

wound is not kept dry, clean, or protected allowing bacteria to grow

37
Q

usage of antimicrobials

A

oral - stable
IV - severe infections or compromised patient

38
Q

wound treatment goals

A

prevent further contamination - allow healing phases to complete successfully

39
Q

indicate when a wound is not healing normally (?)

A
  • longer to heal than expected
  • tissue not healing like expected
  • keeps breaking open
40
Q

topical agents for wound care

A
  • antibiotic ointment
  • SSD
  • honey and sugar
41
Q

home care for owners regarding wound care

A
  • Have owner monitor closely
  • Give written instructions
  • Have owner sign discharge sheet acknowledging receipt of the instructions
  • When in doubt, apply e-collar
  • Protects wound, focus owner attention to situation
  • call with questions or concerns
  • lots of rechecks and visits
42
Q

special considerations regarding equine wounds

A
  • bandage change every 2-3 days
  • lower legs heal slower and more complications
  • can be career ending or fatal