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What is a wound?
A break or disruption in the normal integrity of the skin & tissues.
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Wound Classifications
- Intentional vs Unintentional
- Open vs Closed
- Acute vs Chronic
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Wound healing occurs:
- Inflammatory phase - begins at time of injury - 3 days
- Proliferation phase - 3 days - 24 days
- Maturation phase - end, can last months
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Inflammatory phase
1-3 days
- Vasoconstriction
- Vasodilation
- Cells drawn to area
- Mitosis
- Clot dissolves
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Proliferation Phase - 3-24 days
- Granulation tissue forms
- Fibroblasts
- Epithelialization
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Maturation Phase - 21 - ???
- Withstand stress
- Fibroblasts leave
- Collagen organized & tighter
- Strength approx 35%-59%
- Scars - avascular collagen
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Wound Healing - 3 Intentions
First Intention - Dry dressing
- Second Intention -
- 1. Largest scar
- 2. Risk for infection
- 3. Longest healing time
- Third Intention - Wet to Dry Dressings
- Debridement
- Dressing - absorb
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The length of each wound healing phase depends on:
- Primary, secondary, tertiary intentions
- Type of injury
- Patient health
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First Intention
- No tissue loss
- Sutured closed
- Edges approximated
- Epithelialization
- Minimal scarring
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Second Intention
- Tissue loss
- Edges separated
- Heal by granulation & contraction
- Wound pink/red
- Large scar
- Chance of infection
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Third Intention
- Open wound then approximated
- Closure delayed until risk for infection is gone
- Minimal scar
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Wound healing & type of injury
- Partial thickness - damage to epidermis & dermis
- Full thickness - damage beyond subcutaneous tissue/fascia/muscle/bone
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Wound Infection
- #2 health care associated
- 100,000 bacteria count
- Appear 2-7 days post
- Purulent drainage, pain, redness, edema, fever, chills, increased WBC count
- Danger: sepsis & osteomyelitis
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Hemorrhage - External & Internal
- External:
- -Saturated dressing
- -Blood pools under patient
- -Check frequently
- Internal:
- -Hematoma
- -Swelling
- -Vital sign changes
- -Hypovolemic shock
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Dehiscence & Evisceration
Dehiscence - partial or total separation of wound
Evisceration - protrustion of visceral organs incision
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Dehiscence & Evisceration
Risk Factors & warning signs
- Risk Factors:
- Obesity, malnourished, smokers, infected wounds
- Warning Signs:
- 3-11 days post op
- Increase in drainage from wound
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Dehiscence & Evisceration - what to do if it happens
- Cover wound with sterile towels soaked in NS (normal saline)
- Supine wiht knees bent
- Notify MD immediately
- Stay calm & remain with pt
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Assessment of wounds
Appearance
- Location
- Size
- Depth, W & L
- Approximation of edges
- Drainage
- Color of wound
- Surrounding skin
- Odor
- Drains, tubes
- Sutures, staples
- Pain
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S/S of inflammation
(Priscilla rides several horses)
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REEDA
- Redness
- Ecchymosis
- Edema
- Drainage
- Approximation
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Drainage Types
- Serous: clear, slightly yellow, thin
- Sanguineous: RBC's, bright red vs dark red
- Serosanguineous: mix of RBC & serum, pink to red
- Purulent: WBC, dead tissue debris, bacteria, green, yellow, odorous
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Drains - reason & types
- Remove blood & drainage from a wound
- Open drain - Penrose & T-tube
- Closed drain - Hemovac & Jackson-Pratt
- Assess amount & color of drainage
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Wound Management
- Prevent infection
- Cleanse wound
- Remove nonviable tissue
- Manage exudate
- Maintain a moist wound bed
- Protect the wound
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CLEANSING - reason & types
Reduces infection & removes nonviable tissue
- Cleansing a closed incision site
- Irrigation of a wound
- Debridement - removal of nonviable necrotic tissue
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Cleansing incisions
- Apply noncytoxic solution
- Normal saline
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Irrigation
- Removes exudates, use sterile technique with 35 mL syringe & 19 gauge needle
- Normal saline
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Suture Care
Consult health care facility policy
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Drainage Evacuation
Portable units that exert a safe, constant, low pressure vacuum to remove & collect drainage
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Wound cultures
- Clean wound first with NS
- Use a sterile swab from a culturette tube
- Rotate swab in clean tissue, put pressure to obtain fluid
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Prevent wound infections
- Use sterile technique
- Aseptic technique
- Protection of wound
- Monitoring of patient's glucose, nutrition, albumin levels & hemoglobin
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Debridement Types
- Mechanical:
- -Wet to dry saline gause dressing
- -Whirlpool treatments
- -Never use in clean granulated wound
- Autolytic:
- -Synthetic dressings over a wound to allow the eschar to be self digested by body's own enzymes
Chemical:
- Surgical:
- -Removal of thick, adherent wound crust using a scapel or scissors
- -Surgical procedure
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Why do we apply dressings?
- Protects wound
- Hemostasis
- Promotes healing
- Supports wound site
- Provides moist environment
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Gauze
- Advantages:
- -Readily available
- -Packing wounds
- -Can be combined with other products
- Disadvantages:
- -Fiber shreds
- -Change frequently
- -May stick to wound bed
- -May delay healing
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Transparent Film
- Advantages:
- -Waterproof
- -Promotes autolytic
- -Change q 5-7 days or when it starts to leak
- -Transparent
- Disadvantages:
- -Doesn't absorb moisture
- -May stick to wounds
- -Not for draining wounds
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Foam
- Advantages:
- -Many sizes
- -Easy to apply
- -Easy to remove
- Disadvantages:
- Needs a topper
- Not for dry wounds
- Not for infected wounds
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Composites
- Advantages:
- -Adhesive border
- -Used for autolytic debridment
- Disadvantages:
- -May not keep wound moist
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Hydrocolloid
- Advantages:
- -On for 3-5 days
- -Reduce pain
- -Self adhesive
- -Absorbent
- Disadvantages:
- -Have odor
- -Loss of shape on wound
- -Expensive
- -Not for heavy drainage
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Hydrogel
- Advantages:
- -Rehydrate
- -Reduce pain
- -Changed daily
- -Autolytic debridement
- Disadvantages:
- -Need a secondary dressing
- -May cause maceration
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Alginate
- Advantages:
- -Absorbent
- -Can be used as packing for deep wounds
- -Can be used in infected wounds
- Disadvantages:
- -Needs topper
- -Distinct odor & gelling may be confused with infection
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Silver
- Advantages:
- -Inhibits pathogen growth
- -Cost effective antimicrobial action for 7 days
- Disadvantages:
- -Needs topper
- -Needs to be removed prior to MRI
- -May turn skin black
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Dressings
- Changing:
- -Know type of dressing, placement of drains, & equipment needed
- Securing:
- -Tape, ties, or binders
- Comfort measures:
- -Carefully remove tape - towards wound
- -Gently cleanse wound
- -Administer analgesics before dressing change
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Principles of Sterile Technique
- Sterile to Sterile - don't cross over field
- Only sterile objects on sterile field
- A sterile object or field out of range of vision or an object below the waist is contaminated
- A sterile field becomes contaminated by prolonged exposure to air
- Sterile to wet = contaminated
- The edges of field are considered contaminated
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Documentation
- Drainage
- Wound site
- Granulation
- Skin condition
- Type of irrigation fluid used
- Method of wound irrigation
- Observations of wound
- Type of dressing applied
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