Chapter 38 Skin Integrity and Wound Care

Chapter 38Skin Integrity and Wound Care

Six Functions of the Skin• Protection• Body temperature regulation• Sensation• Excretion • Maintenance of water and electrolyte balance• Vitamin D production and absorption

Question

Tell whether the following statement is true or false.Blood vessels in the skin dilate to dissipate heat.A. TrueB. False

Answer

Answer: A. TrueBlood vessels in the skin dilate to dissipate heat.

Cross-Section of Normal Skin

Factors Affecting the Skin• Unbroken and healthy skin and mucous membranes

defend against harmful agents• Resistance to injury is affected by age, amount of

underlying tissues, and illness• Adequately nourished and hydrated body cells are

resistant to injury• Adequate circulation is necessary to maintain cell life

Developmental Considerations• Infant’s skin and mucous membranes are easily injured

and subject to infection• Child’s skin becomes increasingly resistant to injury and

infection– Requires special care because of toilet and play

habits• Adolescent has enlarged sebaceous glands and increased

secretions• Adult’s tissue becomes thinner and wrinkles appear; liver

spots occur

Causes of Skin Alterations• Very thin and very obese people are more susceptible to

skin injury– Fluid loss during illness causes dehydration– Skin appears loose and flabby

• Excessive perspiration during illness predisposes skin to breakdown

• Jaundice causes yellowish, itchy skin• Diseases of the skin cause lesions that require care

Factors Influencing Personal Hygiene• Culture• Socioeconomic class• Spiritual practices• Developmental and knowledge level• Health state• Personal preference

Types of Wounds• Intentional or unintentional• Open or closed• Acute or chronic• Partial thickness, full thickness, complex

Question

Which one of the following types of wounds is caused by a blunt instrument that causes injury to underlying soft tissue with the overlying skin remaining intact?A. ContusionB. AbrasionC. LacerationD. Avulsion

Answer Answer: A. ContusionRationale:A contusion is caused by a blunt instrument and may result in bruising or hematoma.An abrasion is the rubbing or scraping of epidermal layers of skin.A laceration is the tearing of skin and tissue with a blunt or irregular instrument.Avulsion is the tearing of a structure from normal anatomic position.

Principles of Wound Healing• Intact skin is the first line of defense against

microorganisms• Surgical asepsis is used in caring for a wound• The body responds systematically to trauma of any of its

parts• An adequate blood supply is essential for normal body

response to injury• Normal healing is promoted when wound is free of foreign

material

Principles of Wound Healing (cont.)• The extent of damage and the person’s state of health

affects wound healing• Response to wound is more effective if proper nutrition is

maintained

Phases of Wound Healing• Inflammatory• Proliferative• Remodeling

Question

In which one of the following phases of wound healing is new tissue built to fill the wound space, primarily through the action of fibroblasts?A. HemostasisB. Inflammatory phaseC. Proliferation phaseD. Maturation phase

Answer

Answer: C. Proliferation phaseRationale: In the proliferation phase, granulation tissue is formed to fill the wound.In hemostasis, involved blood vessels constrict and blood clotting begins.In the inflammatory phase, white blood cells move to the wound.In the maturation phase, collagen is remodeled forming a scar.

Inflammatory Phase• Begins at time of injury• Prepares wound for healing

– Hemostasis (blood clotting) occurs– Vascular and cellular phase of inflammation

Proliferative Phase• Phase begins within 2 to 3 days of injury and may last up

to 2 to 3 weeks• New tissue is built to fill wound space through action of

fibroblasts• Capillaries grow across wound• Thin layer of epithelial cells forms across wound• Granulation tissue forms foundation for scar tissue

development

Remodeling Phase• Final stage of healing begins about 3 weeks after injury to

possibly 6 months• Collagen is remodeled• New collagen tissue is deposited• Scar becomes a flat, thin, white line

Factors Affecting Wound Healing• Age—children and healthy adults heal more rapidly• Circulation and oxygenation—adequate blood flow is

essential• Nutritional status—healing requires adequate nutrition• Wound condition–specific condition of wound affects

healing• Health status—corticosteroid drugs and postoperative

radiation therapy delay healing

Wound Complications• Infection• Hemorrhage• Dehiscence and evisceration• Fistula formation

Question

Which one of the following wound complications is caused by overhydration related to urinary and fecal incontinence?A. NecrosisB. EdemaC. DesiccationD. Maceration

Answer

Answer: D. MacerationRationale:Maceration is caused by overhydration related to incontinence that causes impaired skin integrity.Necrosis is dead tissue present in the wound that delays healing.Edema is swelling at a wound site that interferes with blood supply to the area.Desiccation is the process in which the cells dehydrate and die.

Wound Dehiscence and Evisceration

Psychological Effects of Wounds• Pain• Anxiety • Fear• Change in body image

Factors Affecting Pressure Ulcer Development• Aging skin• Chronic illnesses• Immobility• Malnutrition• Fecal and urinary incontinence• Altered level of consciousness• Spinal cord and brain injuries• Neuromuscular disorders

Mechanisms in Pressure Ulcer Development• External pressure compressing blood vessels• Friction or shearing forces tearing or injuring blood

vessels

Stages of Pressure Ulcers• Stage I — nonblanchable erythema of intact skin• Stage II — partial-thickness skin loss • Stage III — full-thickness skin loss; not involving

underlying fascia• Stage IV — full-thickness skin loss with extensive

destruction

Measurement of a Pressure Ulcer• Size of wound• Depth of wound• Presence of undermining, tunneling, or sinus tract

A Wound with Various Types of Wound Surface Tissue

Question

Tell whether the following statement is true or false.A Stage III pressure ulcer requires debridement through wet-to-dry dressings, surgical intervention, or proteolytic enzymes. A. TrueB. False

Answer

Answer: A. TrueA Stage III pressure ulcer requires debridement through wet-to-dry dressings, surgical intervention, or proteolytic enzymes.

Cleaning a Pressure Ulcer• Clean with each dressing change• Use careful, gentle motions to minimize trauma• Use 09% normal saline solution to irrigate and clean the

ulcer• Report any drainage or necrotic tissue

Dressing the Pressure Ulcer• Keep ulcer tissue moist and surrounding skin dry• Place moist dressings only on the wound surface • Use dressing that absorbs exudate but maintains moist

environment• Use skin sealant or moisture-barrier ointment on

surrounding skin• Secure dressing with the least amount of tape possible• Use wet-to-dry dressings for debridement, when ordered• Pack wound cavities loosely with dressing material

Wound Assessment• Inspection for sight and smell• Palpation for appearance, drainage, and pain• Sutures, drains or tube, manifestation of complications

Presence of Infection• Wound is swollen• Wound is deep red in color• Wound feels hot on palpation• Drainage is increased and possibly purulent• Foul odor may be noted• Wound edges may be separated with dehiscence present

Assessment of Wound Drainage• Serous• Sanguineous• Purulent

Purposes of Wound Dressings• Provide physical, psychological, and aesthetic comfort• Remove necrotic tissue• Prevent, eliminate, or control infection• Absorb drainage• Maintain a moist wound environment• Protect wound from further injury• Protect skin surrounding wound

Types of Wound Dressings• Telfa• Gauze dressings• Transparent dressings

Types of Bandages• Roller bandages• Circular turn• Spiral turn• Figure-of-eight turn• Recurrent-stump bandage

Types of Binders• Straight — used for chest and abdomen• T-binder — used for rectum, perineum, and groin area• Sling — used to support an arm

Type of Drainage Systems• Open systems

– Penrose drain• Closed systems

– Jackson-Pratt drain– Hemovac drain

• Wound pouching

Penrose Drain

Jackson-Pratt Drain

Color Classification of Open Wounds• R = red—proliferative stage of healing; reflects color of

normal granulation• Y = yellow—characterized by oozing; needs to be

cleansed• B = black—covered with thick eschar; requires

debridement• Mixed wound—contains components of RY&B wounds

Topics for Home Care Teaching• Supplies• Infection prevention• Wound healing• Appearance of the skin/recent changes• Activity/mobility• Nutrition• Pain• Elimination

Factors Affecting the Response to Hot and Cold Treatments• Method and duration of application• Degree of heat and cold applied• Patient’s age and physical condition• Amount of body surface covered by the application

Effects of Applying Heat• Dilates peripheral blood vessels• Increases tissue metabolism• Reduces blood viscosity and increases capillary

permeability• Reduces muscle tension• Helps relieve pain

Effects of Applying Cold• Constructs peripheral blood vessels• Reduces muscle spasms• Promotes comfort

Devices to Apply Heat• Hot water bags or bottles• Electric heating pads• Aquathermia pads• Heat lamps• Heat cradles• Hot packs• Moist heat• Sitz baths• Warm soaks

Devices to Apply Cold• Ice bags• Cold packs• Hypothermia blankets• Moist cold

Chapter 38 Skin Integrity and Wound Care

Documents

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