ppt chapter 28

Copyright © 2013 Wolters Kluwer Health | Lippincott Williams & Wilkins

Chapter 28

Wound Care


QuestionQuestion

•Is the following statement true or false?

Macrophages are types of white blood cells.


AnswerAnswer

True.

Macrophages are types of white blood cells.


WoundsWounds

• Wound: damaged skin or soft tissue resulting from trauma

– Open wounds: mucous membrane is no longer intact

– Closed wounds: no open mucous membrane


Wound RepairWound Repair

• Inflammation: physiologic defense occurring immediately after tissue injury, lasting 2 to 5 days

– Purpose: limit local damage, remove injured cells/debris, prepare wound for healing

– Signs and symptoms of inflammation: swelling, redness, warmth, pain, and decreased function


Wound Repair (cont’d)Wound Repair (cont’d)

• Proliferation: period during which new cells fill and seal a wound; it occurs 2 days to 3 weeks after inflammatory phase

– The integrity of skin and damaged tissue is restored by resolution, regeneration, and scar formation


Wound Repair (cont’d)Wound Repair (cont’d)

• Remodeling: period during which the wound undergoes changes and maturation

– Lasts 6 months to 2 years

– During remodeling, the wound contracts and the scar shrinks


The Inflammatory ResponseThe Inflammatory Response


Wound HealingWound Healing

• First-intention healing: reparative process in which wound edges are directly next to each other

• Second-intention healing: wound edges are widely separated; time-consuming, complex reparative process

• Third-intention healing: deep wound edges brought together with some type of closure material, resulting in a broad, deep scar


Wound Healing FactorsWound Healing Factors

• Type of wound injury

• Expanse or depth of wound

• Circulation quality

• Amount of wound debris

• Presence of infection

• Client’s health status


Wound RepairWound Repair


Wound Healing ComplicationsWound Healing Complications

• Wound healing key: adequate blood flow to the injured tissue

• Interfering factors may include:

– Compromised circulation

– Infection

– Purulent, bloody, or serous fluid accumulation preventing skin and tissue approximation


Wound Healing Complications (cont’d)

Wound Healing Complications (cont’d)

• Potential surgical wound complications

– Dehiscence: separation of wound edges

– Evisceration: wound separation with protrusion of organs


DressingsDressings

• Dressing purposes:

– Keeping wound clean

– Absorbing drainage

– Controlling bleeding

– Protecting wound from further injury

– Holding medication in place

– Maintaining a moist environment


Dressings (cont’d)Dressings (cont’d)

• Types of dressings:

– Gauze dressings: ideal for covering fresh wounds that are likely to bleed, or wounds that exude drainage

– Transparent dressings: used to cover peripheral and central IV insertion sites


Dressings (cont’d)Dressings (cont’d)

• Types of dressings (cont’d)

– Hydrocolloid dressings: keep wounds moist; moist wounds heal more quickly; new cells grow more rapidly in a wet environment

– Dressing changes: when a wound requires assessment or care


QuestionQuestion

•Which dressing is ideal for covering fresh wounds that are likely to bleed?

a. Gauze

b. Transparent

c. Hydrocolloid

d. Dressing


AnswerAnswer

a. Gauze

Gauze dressing is used for covering fresh wounds. Transparent dressings are used to cover IV insertion sites. Hydrocolloid dressings keep wounds moist. Dressing changes are done when a wound requires assessment, care, or is saturated with drainage.


Wound ManagementWound Management

• Drains

– Open drains

– Closed drains

• Sutures; Staples


QuestionQuestion

•Is the following statement true or false?

Steri-Strips can be used to close superficial lacerations instead of sutures or staples.


AnswerAnswer

True.

Steri-Strips are also used to close superficial lacerations instead of sutures or staples.


Wound Management (cont’d)Wound Management (cont’d)

• Bandages and binders

– Purpose: hold dressings in place, especially if tape cannot be used or dressing is very large

– Support area around the wound or injury to reduce pain

– Limit movement in wound area to promote healing



• Roller bandage application

• Binder application

– Different types of binders

o Single T-binder

o Double T-binder



• Debridement: removal of dead tissue

– Sharp debridement: using sterile scissors, forceps, etc.

– Enzymatic debridement: using chemical substances

– Autolytic debridement: natural physiologic process



• Debridement (cont’d):

– Mechanical debridement: physical removal of debris from a wound using wet-to-dry dressings, hydrotherapy, irrigation

o Commonly irrigated structures include:

Wounds, eyes, ears, vagina


QuestionQuestion

•Which type of debridement breaks down and liquefies wound debris?

a. Autolytic

b. Sharp

c. Mechanical

d. Enzymatic


AnswerAnswer

d. Enzymatic

Enzymatic debridement involves the use of topically applied chemical substances. Autolytic debridement allows the body’s enzymes to soften, liquefy, and release devitalized tissue. Sharp debridement is the removal of necrotic tissue with sterile scissors, forceps, or other instruments. Mechanical debridement involves physical removal of debris.



• Heat and cold applications

– Ice bag and ice collar

– Chemical packs

– Compresses

– Aquathermia pad

– Soaks and moist packs

– Therapeutic baths


Pressure UlcersPressure Ulcers•Also known as decubitus ulcers– Appear over bony prominences of

the sacrum, hips, heals, and places where pressure is unrelieved

•Risk factors include:− Inactivity, immobility, malnutrition,

emaciation− Diaphoresis, incontinence, sedation− Vascular disease, localized edema,

dehydration


Pressure Ulcers (cont’d)Pressure Ulcers (cont’d)

• Stages of pressure ulcers

– Stage I: intact but reddened skin

– Stage II: reddened skin accompanied by blistering or a skin tear

– Stage III: shallow skin crater that extends to the subcutaneous tissue

– Stage IV: deeply ulcerated, extending to muscle and bone; life threatening


Pressure Ulcers (cont’d)Pressure Ulcers (cont’d)

• Prevention of pressure ulcers

– Change client’s position frequently

– Avoid using plastic-covered pillows

– Use the lateral position for side-lying

– Massage bony prominences

– Use pressure-relieving devices

– Provide a balanced diet and adequate fluid intake


Nursing ImplicationsNursing Implications

•Potential nursing diagnoses:

– Acute pain

– Impaired skin and tissue integrity

– Ineffective tissue perfusion

– Risk for infection


• Wound healing is delayed in older adults; regeneration of healthy skin takes twice as long for an 80-year-old as it does for a 30-year-old

• Age-related changes affecting wound healing include thinning dermal layer of skin; decreased subcutaneous tissue

• Signs of inflammation may be more subtle in older adults

General Gerontologic ConsiderationsGeneral Gerontologic Considerations


• Diminished immune response from reduced T-lymphocyte cells predisposes older adults to wound infections

• Conditions that interfere with circulation increase the older adult’s susceptibility to delayed wound healing and wound infections

• Diminished mobility requires aggressive skin care to prevent pressure ulcers

General Gerontologic Considerations (cont’d)



• Due to decreased blood supply to the skin, older adults may need position changes every 60 to 90 minutes, instead of every 20 minutes

• Use special care when moving older adults; avoid friction on the skin

• Depression, poor appetite, cognitive impairments, and physical/economic barriers interfering with adequate nutrition may impair wound healing



ppt chapter 28

Technology

wound care

wound separation

wound area

wound contracts

deep wound edges

wound injury expanse

wound clean absorbing

gauze dressings