Causes, prevention, and treatment of epibole

As full-thickness wounds heal, they begin to fill in from the bottom upward with granulation tissue. At the same time, wound edges contract and pull together, with movement of epithelial tissue toward the center of the wound (contraction). These epithelial cells, arising from either the wound margins or residual dermal epithelial appendages within the wound bed, begin to migrate in leapfrog or train fashion across the wound bed. Horizontal movement stops when cells meet (contact inhibition). The ideal wound edge is attached to and flush with the wound bed, moist and open with the epithelial rim thin, and pale pink to translucent. (more…)

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2016 Journal: Best of the Best Vol. 5 No. 5

Wound Care Advisor Best of the Best 2016

Clinical Notes: Healing SCI Patients, antiseptics on mahout, diabetes

Electrical stimulation and pressure ulcer healing in SCI patients A systematic review of eight clinical trials of 517 patients with spinal cord injury (SCI) and at least one pressure ulcer indicates that electrical stimulation increases the healing rate of pressure ulcers. Wounds with electrodes overlaying the wound bed seem to have faster pressureulcer healing than wounds with electrodes placed on intact skin around the ulcer.

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Case study: Peristomal pyoderma gangrenosum

As a wound care specialist, you have learned about many skin conditions, some so unusual and rare that you probably thought you would never observe them. I’ve been a nurse for 38 years, with the last 10 years in wound care, and that’s certainly what I thought. But I was wrong. Let me tell you about my challenging patient with…

Causes, prevention, and treatment of epibole

As full-thickness wounds heal, they begin to fill in from the bottom upward with granulation tissue. At the same time, wound edges contract and pull together, with movement of epithelial tissue toward the center of the wound (contraction). These epithelial cells, arising from either the wound margins or residual dermal epithelial appendages within the wound bed, begin to migrate in leapfrog or train fashion across the wound bed. Horizontal movement stops when…

Electrical stimulation

Clinical Notes: Healing SCI Patients, antiseptics on mahout, diabetes

Electrical stimulation and pressure ulcer healing in SCI patients A systematic review of eight clinical trials of 517 patients with spinal cord injury (SCI) and at least one pressure ulcer indicates that electrical stimulation increases the healing rate of pressure ulcers. Wounds with electrodes overlaying the wound bed seem to have faster pressureulcer healing than wounds with electrodes placed on intact skin around the ulcer.

Clinician Resources: Pressure-Injuries, Ostomy, Lymphedema, Delirium

Here is a round-up of resources that you may find helpful in your practice. New illustrations for pressure-injury staging The National Pressure Ulcer Advisory Panel (NPUAP) has released new illustrations of pressure injury stages. You can download the illustrations, which include normal Caucasian and non-Caucasian skin illustrations for reference. There is no charge for the illustrations as long as they are being used for educational purposes, but donations to…

Cutaneous candidiasis

By Nancy Morgan, RN, BSN, MBA, WOC, WCC, DWC, OMS Each issue, Apple Bites brings you a tool you can apply in your daily practice. Here’s an overview of cutaneous candi­diasis. Cutaneous candidiasis is an infection of the skin caused by the yeast Candida albicans or other Candida species. Here’s a snapshot of this condition.

How to apply silver nitrate

Topical application of silver nitrate is often used in wound care to help remove and debride hypergranulation tissue or calloused rolled edges in wounds or ulcerations. It’s also an effective agent to cauterize bleeding in wounds. Silver nitrate is a highly caustic material, so it must be used with caution to prevent damage to healthy tissues.

How to manage peristomal skin problems

For an ostomy pouching system to adhere properly, the skin around the stoma must be dry and intact. Otherwise, peristomal skin problems and skin breakdown around the stoma may occur. In fact, these problems are the most common complications of surgical stomas. They can worsen the patient’s pain and discomfort, diminish quality of life, delay rehabilitation, increase use of ostomy supplies, and raise healthcare costs. Peristomal skin problems also perpetuate a…

Immobility as the root cause of pressure ulcers

By Jeri Lundgren, BSN, RN, PHN, CWS, CWCN Many factors can contribute to the formation of a pressure ulcer, but it’s rare that one develops in an active, mobile patient. As the National Pressure Ulcer Advisory Panel 2014 guidelines state, “Pressure ulcers cannot form without loading, or pressure on the tissue. Extended periods of lying or sitting on a particular…

No more skin tears

Imagine watching your skin tear, bleed, and turn purple. Imagine, too, the pain and disfigurement you’d feel. What if you had to live through this experience repeatedly? That’s what many elderly people go through, suffering with skin tears through no fault of their own. Some go on to develop complications. A skin tear is a traumatic wound caused by shear, friction, or blunt-force trauma that results in a partial-…

Our gold medal issue: Best of the Best 2016

This issue marks the fourth anniversary of the “Best of the Best” issue of Wound Care Advisor, the official journal of the National Alliance of Wound Care and Ostomy. Fittingly, it comes during an Olympics year. Since 1904, the Olympics have awarded gold medals to athletes whose performance makes them the “best of the best.” This year, we’re proud to present our own “Best…

Preventing pressure ulcers in pediatric patients

By Roxana Reyna, BSN, RNC-NIC, WCC, CWOCN As wound care clinicians, we are trained—and expected—to help heal wounds in patients of any age and to achieve positive outcomes. Basic wound-healing principles apply to all patients, whatever their age or size. The specific anatomy and physiology of vulnerable pediatric patients, however, requires detailed wound care. Unfortunately, little evidence-based research exists to…

Pros Cons Hydrocolloid Foot Ulcers

Pros and cons of hydrocolloid dressings for diabetic foot ulcers

Diabetic foot ulcers stem from multiple factors, including peripheral neuropathy, high plantar pressures, decreased vascularity, and impaired wound healing. Contributing significantly to morbidity, they may cause limb loss and death. (See Foot ulcers and diabetes.) Initially, hydrocolloid dressings were developed to function as part of the stomal flange. Based on their success in protecting peristomal skin, they were introduced gradually…

2016 Journal: Best of the Best Vol. 5 No. 5
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Our gold medal issue: Best of the Best 2016

This issue marks the fourth anniversary of the “Best of the Best” issue of Wound Care Advisor, the official journal of the National Alliance of Wound Care and Ostomy. Fittingly, it comes during an Olympics year. Since 1904, the Olympics have awarded gold medals to athletes whose performance makes them the “best of the best.” This year, we’re proud to present our own “Best of the Best” in print format. (more…)

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Understanding NPUAP’s updates to pressure ulcer terminology and staging

On April 13, 2016, the National Pressure Ulcer Advisory Panel (NPUAP) announced changes in pressure ulcer terminology and staging definitions. Providers can adapt NPUAP’s changes for their clinical practice and documentation, but it’s important to note that, as of press time, the Centers for Medicare & Medicaid Services (CMS) has not adopted the changes. This means that providers can’t use NPUAP’s updates when completing CMS assessment forms, such as the Minimum Data Set (MDS) or Outcome and Assessment Information Set (OASIS). Instead, they must code the CMS assessment forms according to current CMS instructions and definitions. In addition, there is no ICD-10 code for pressure injury. (more…)

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2016 Journal: May – June Vol. 5 No. 3

Wound Care Advisor Journal 2016 Vol5 No3

How to manage peristomal skin problems

For an ostomy pouching system to adhere properly, the skin around the stoma must be dry and intact. Otherwise, peristomal skin problems and skin breakdown around the stoma may occur. In fact, these problems are the most common complications of surgical stomas. They can worsen the patient’s pain and discomfort, diminish quality of life, delay rehabilitation, increase use of ostomy supplies, and raise healthcare costs.

Peristomal skin problems also perpetuate a vicious cycle in ostomy patients: They impair adhesion of the pouching system, which in turn exacerbates the skin problem. That’s why maintaining peristomal skin integrity and addressing skin problems promptly are so crucial.

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10 tips for a successful professional conference

Attending a professional conference can yield many benefits if you follow these 10 tips. 1 Obtain new knowledge. Conferences provide opportunities for clinicians to gain new knowledge about procedures, technology, and research. Take notes and keep handouts for reference. After you return, share what you have learned with colleagues so multiple people benefit from the conference. Remember to complete the necessary information to obtain professional continuing education (CE) credit. 2 Become certified.…

A pressure ulcer by any other name

Just when we think we’ve figured out pressure ulcer staging, it changes again. In April 2016, the National Pressure Ulcer Advisory Panel (NPUAP) held a consensus conference on staging definitions and terminology. The purpose: to analyze and discuss the rationale for the panel’s changes. One of the key changes is replacing the term “pressure ulcer” with “pressure injury.” So instead of calling it a pressure ulcer staging system, NPUAP will…

Case study: Maggots help heal a difficult wound

Using maggots to treat wounds dates back to 1931 in this country. Until the advent of antibiotics in the 1940s, maggots were used routinely. In the 1980s, interest in them revived due to the increasing emergence of antibiotic-resistant bacteria. At Select Specialty Hospital Houston in Texas, we recently decided to try maggot therapy for a patient with a particularly difficult wound. In this case study, we share our experience.

Causes, prevention, and treatment of epibole

As full-thickness wounds heal, they begin to fill in from the bottom upward with granulation tissue. At the same time, wound edges contract and pull together, with movement of epithelial tissue toward the center of the wound (contraction). These epithelial cells, arising from either the wound margins or residual dermal epithelial appendages within the wound bed, begin to migrate in leapfrog or train fashion across the wound bed. Horizontal movement stops when…

Clinical Notes: Moldable Skin Barrier, hypoglycemia, diabetic food ulcers

Moldable skin barrier effective for elderly patients with ostomy A study in Gastroenterology Nursing reports that compared to a conventional skin barrier, a moldable skin barrier significantly improves self-care satisfaction scores in elderly patients who have a stoma. The moldable skin barrier also caused less irritant dermatitis and the costs for leakage-proof cream were lower. “The application of a moldable skin barrier in the self-care of elderly ostomy patients” included…

Clinician Resources: OSHA, Education Program, Civil Workplace

This issue we focus on resources to help clinicians protect themselves from injuries and engage in a healthier lifestyle. OSHA safety website A hospital is one of the most hazardous places to work, according to the Occupational Safety and Health Administration (OSHA). The agency provides a wealth of information on how to protect hospital workers as part of its website Worker Safety in Hospitals: Caring for Our Caregivers. PDF…

How to manage peristomal skin problems

For an ostomy pouching system to adhere properly, the skin around the stoma must be dry and intact. Otherwise, peristomal skin problems and skin breakdown around the stoma may occur. In fact, these problems are the most common complications of surgical stomas. They can worsen the patient’s pain and discomfort, diminish quality of life, delay rehabilitation, increase use of ostomy supplies, and raise healthcare costs. Peristomal skin problems also perpetuate a…

hyperbaric oxygen therapy

Hyperbaric oxygen therapy as adjunct therapy for wound care

Why would a patient with a wound spend almost 2 hours a day, 5 days a week, in a locked chamber receiving 100% oxygen? The answer is that medical grade hyperbaric oxygen therapy (HBOT) can be a valuable adjunct therapy for selected types of wounds. In this article, I’ll focus on hospitals and clinics that follow guidelines from the Undersea…

Hyperbaric oxygen therapy for treatment of diabetic foot ulcers

By Carrie Carls, BSN, RN, CWOCN, CHRN; Michael Molyneaux, MD; and William Ryan, CHT Every year, 1.9% of patients with diabetes develop foot ulcers. Of those, 15% to 20% undergo an amputation within 5 years of ulcer onset. During their lifetimes, an estimated 25% of diabetic patients develop a foot ulcer. This article discusses use of hyperbaric oxygen therapy (HBOT)…

Understanding radiation dermatitis

According to the National Cancer Institute, an estimated 1.6 million new cases of cancer will have been diagnosed in the United States in 2015. During the course of their disease, most cancer patients receive radiation therapy. Delivering high energy in the form of waves or particles, radiation therapy alters the DNA of cancer cells, causing their death. Radiation can be administered either externally or internally (through materials placed into the body). It’s…

Wise use of antibiotics in patients with wound infections

Antibiotic resistance is a pressing public health threat not only in the United States, but worldwide. According to the World Health Organization (WHO), it is one of the major threats to human health. Despite these concerns, antibiotics continue to be widely used—and overused. In long-term care, for instance, antibiotics are the most frequently prescribed medications, with as many as 70% of residents receiving one or more courses per year.…

2016 Journal: May – June Vol. 5 No. 3
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How to apply silver nitrate

Topical application of silver nitrate is often used in wound care to help remove and debride hypergranulation tissue or calloused rolled edges in wounds or ulcerations. It’s also an effective agent to cauterize bleeding in wounds. Silver nitrate is a highly caustic material, so it must be used with caution to prevent damage to healthy tissues. (more…)

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Is your therapy department on board with your wound care team?

therapy department wound care

By Cheryl Robillard, PT, WCC, CLT, DWC

Patients in your clinical practice who develop wounds should prompt a call for “all hands on deck” to manage the situation, but some personnel may be missing the boat. Physical therapists (PTs), occupational therapists (OTs), and speech-language pathologists (SLPs) should be on board your wound care ship so patients can receive care they need. But unfortunately, sometimes they aren’t. (more…)

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Get positive results with negative-pressure wound therapy

By Ronald Rock, MSN, RN, ACNS-BC

Complex wound failures are costly and time-consuming. They increase length of stay and contribute to morbidity and mortality in surgical patients. Negative-pressure wound therapy (NPWT)—a common adjunct to wound-care therapy—is used to accelerate wound healing in all fields of surgery. Using a vacuum device and wound-packing material, it applies subatmospheric pressure to complex wounds.
But NPWT alone doesn’t ensure adequate wound healing. Many physiologic factors—including infection, excessive moisture, nutrition, and medications—influence wound-healing success. Failure to account for these factors or improper application of NPWT can limit patient outcomes and cause debilitating complications.
For clinicians, applying and establishing an airtight seal on a complex wound is among the most dreaded, time-consuming, and challenging NPWT-related tasks. Simply applying NPWT material under layers of transparent drape may delay wound healing or exacerbate the wound. This article provides tips on safe application of NPWT to enhance the outcomes of patients with complex wounds.

 Consider wound location

Wounds on the body’s anterior surfaces are less susceptible to the forces of pressure, friction, and shear than those on posterior and lateral surfaces. Posterior and lateral wounds commonly require posterior off­loading or repositioning the patient in bed to reduce or eliminate direct pressure. This can be done with judicious and frequent patient turning using a specialty bed or support surface.
Bridge a posterior or lateral wound to an anterior surface by placing the drainage collection tubing to a nonpressure-bearing surface away from the wound. Bridging keeps the tubing from exerting pressure on intact skin and decreases the risk of a pressure ulcer. To create the bridge, cut foam into a single spiral of 0.5 to 1 cm, or if using gauze, fold gauze into 8 single layers.
Place the spiraled foam or gauze layers onto the drape, ensure the bridge is wider than the collection tubing disc, and secure it with an additional drape. Next, apply the NPWT collection tubing on the end of the bridge away from the wound. A wide bridge under the collection tubing disc will minimize the potential for periwound breakdown when negative pressure is initiated. You may modify this spiraling technique by varying the width of the foam to fill undermining and wounds of irregular configuration and depth.

 Protect the periwound

An intact periwound may break down from exposure to moisture, injury from repetitive removal of a transparent drape, or NPWT material coming in contact with skin. Skin protection is critical in preventing additional breakdown stemming from contact with potentially damaging material.
Transparent drapes are designed to permit transmission of moisture vapor and oxygen. Avoid using multiple layers of transparent drapes to secure dressings over intact skin, as this can decrease the transmission of moisture vapor and oxygen, which in turn may increase the risk of fungal infection, maceration, and loss of an intact seal.
Periwound maceration also may indicate increased wound exudate, requiring an increase in negative pressure. Conversely, an ecchymotic periwound may indicate excessively high negative pressures. If either occurs, assess the need to adjust negative pressure and intervene accordingly. Reassess NPWT effectiveness with subsequent dressing changes.
Apply a protective liquid skin barrier to the periwound and adjacent healthy tissue to help protect the skin surface from body fluids. The skin barrier also helps prevent stripping of fragile skin by minimizing shear forces from repetitive or forceful removal of transparent drapes. Excessive moisture can be absorbed by using a light dusting of ostomy powder sealed with a skin barrier. A “window pane” of transparent drape or hydrocolloid dressing around the wound also can protect surface tissue from contactwith NPWT material and prevent maceration.

 Avoid creating rolled wound edges

In the best-case scenario, epithelial tissue at the wound edge is attached to the wound bed and migrates across healthy granulation tissue, causing the wound to contract and finally close. With deep wound environments that lack moisture or healthy granulation tissue, the wound edges may roll downward and epibole may develop. Epibole is premature closure of the wound edges, which prevents epi­thelialization and wound closure when it comes in contact with a deeper wound bed. (See Picturing epibole by clicking the PDF icon above.)
Materials used in NPWT are primarily air-filled. Applying negative pressure causes air removal, leading to wound contraction by pulling on the wound edges—an action called macrostrain. Without sufficient NPWT material in the wound, macrostrain can cause the wound to contract downward and the wound edges to roll.
Ensure that enough NPWT material has been applied into the wound to enhance wound-edge approximation and avoid creating a potential defect as the wound heals. Before NPWT begins, material should be raised 1 to 2 cm above the intact skin. Additional material may be needed with subsequent changes if the NPWT material compresses below the periwound. The amount of NPWT material needed to remain above the periwound once NPWT starts varies with the amount of material compressed and the wound depth.

 Reduce the infection risk

To some degree, all wounds are contaminated. Usually, the body’s immunologic response is able to clear bacterial organisms and wound healing isn’t delayed. But a patient who has an infection of a complex wound needs additional support.
Systemic antibiotics alone aren’t enough because they’re selective for specific organisms and don’t reach therapeutic levels in the wound bed. In contrast, topical anti­microbial adjuncts, such as controlled-release ionic silver, provide broad-spectrum antimicrobial coverage against fungi, viruses, yeasts, and gram-negative and gram-positive bacteria, including methicillin-resistant Staphylococcus aureus and vancomycin-resistant enterococci.
Consider using controlled-release ionic silver for a wound known to be infected or at risk for infection due to its location or potential urine or fecal contamination. To be bactericidal, ionic silver must be in concentrations of at least 20 parts per million; also, it must be kept moist and must come in direct contact with infected wound bed. At lower concentrations, organisms may develop resistance. Ionic silver has no known resistance or contraindications. Dressings using it come in several forms, including a hydrogel sheet, perforated sheet, cavity version, and semiliquid hydrogel. Be sure the form you choose doesn’t occlude the NPWT material and compromise therapy. (See NPWT for a patient with necrotizing fasciitis by clicking the PDF icon above.)

View: NPWT

Obtain a negative-pressure environment

One of the most daunting aspects of NPWT is obtaining and maintaining a good seal—in other words, avoiding the dreaded leak. Preventive skin measures may contribute to a poor seal; skin-care products containing glycerin, surfactant, or dimethicone may prevent adequate adhesion of NPWT drapes. Body oil, sweat, and hair may need to be minimized or removed.
To avoid leaks, don’t overlook the obvious—loose connections, a loose drainage collection canister, exposed NPWT material, and skinfolds extending beyond the transparent drape. Tincture of benzoin (with or without a thin hydrocolloid dressing) increases tackiness to enhance the adhesive property of a transparent drape on the diaphoretic patient and on hard-to-drape areas, such as the perineum. But be sure to use tincture of benzoin with discretion, as it may remove fragile periwound tissue when the dressing is removed.
Ostomy paste products can serve as effective filler. These pliable products can be spread into position to obtain a secure seal under the transparent drape in hard-to-seal areas, such as the perineum. Pastes remain flexible and can be removed without resi­due. Temporarily increasing NPWT pressure to a higher setting may help locate a subtle leak or provide enough negative pressure to self-seal the leak. Once the leak resolves, remember to return the pressure to the ordered setting.

 Knowledge optimizes healing

It’s important to be aware of potential complications of NPWT (See Take care with NPWT by clicking on the PDF icon above). However, when applied correctly, NPWT is an effective option for managing complex wounds. Recognizing and managing potential complications at the wound site, ensuring periwound protection, minimizing epibole formation, and preventing wound infection can result in a better-prepared wound bed and promote optimal healing.

View: NPWT case study

Selected references
Baranoski S, Ayello EA. (2012). Wound Care Essentials: Practice Principles. 3rd ed. Springhouse, PA; Lippincott Williams & Wilkins.

Bovill E, Banwell PE, Teot L, et al. Topical negative pressure wound therapy: a review of its role and guidelines for its use in the management of acute wounds. Int Wound J. 2008;5:511-529.

Sussman C, Bates-Jensen B. Wound Care: A Collaborative Practice Manual for Health Professionals. 4th ed. Baltimore, MD; Lippincott Williams & Wilkins; 2011.

Ronald Rock is an Adult Health Clinical Nurse Specialist in the Digestive Disease Institute at the Cleveland Clinic in Cleveland, Ohio.

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Caring for chronic wounds: A knowledge update

By: Patricia A. Slachta, PhD, RN, ACNS-BC, CWOCN

Wound care has come a long way in just a few decades. With our expanded knowledge of wound healing and recent advances in treatment, we’re now able to assess wounds more accurately, recognize wound-related problems sooner, provide better interventions, and reduce morbidity.

To bring you up to date on current evidence-based wound management, this article focuses on assessing patients with chronic wounds, optimizing wound healing with effective wound-bed preparation, and selecting an appropriate dressing.

Wound chronicity and cause

Developing an appropriate plan of care hinges on conducting a thorough, accurate evaluation of both the patient and the wound. The first step is to determine whether the wound is acute or chronic.
•    A chronic wound is one that fails to heal within a reasonable time—usually
3 months.
•    An acute wound heals more quickly, causing minimal functional loss in the part of the body with the wound.
Identifying the cause of the wound also is essential. If the wound etiology is unknown, explore the patient’s medical history (including medication history) for clues to possible causes. Also review the patient’s history for conditions that could impede wound healing. (See What factors hamper healing? by clicking the PDF icon above)
Other important aspects of assessment include evaluating the patient’s nutritional status, quantifying the level of pain (if present), and gauging the patient’s self-care abilities.

General physical appearance

Conduct a general head-to-toe physical examination, focusing on the patient’s height, weight, and skin characteristics.

Height, weight, and weight trend

On admission, the patient’s height and weight should be measured to ensure appropriate nutritional and pharmacologic management. After a weight gain or loss, various factors may complicate wound healing. For instance, involuntary weight loss and protein-energy malnutrition may occur in both acute-care and long-term-care patients.

Especially note trends in your patient’s weight. For a long-term-care patient, a 5% weight loss over 30 days or a 10% loss over 180 days is considered involuntary. Arrange for a nutritional consult for any patient with an involuntary weight loss, as adequate nutrition is essential for general well-being and wound healing. (See A wound on the mend by clicking the PDF icon above.)

Skin color

Evaluate the patient’s skin color in light of ethnic background. If you note erythema—especially on a pressure point over a bony prominence—examine this area carefully for nonblanching erythema. Keep in mind that darkly pigmented skin doesn’t show such erythema and subsequent blanching, yet the patient may still be in jeopardy. So in dark-skinned patients, check for differences in skin color, temperature, or firmness compared to adjacent tissue; these differences may signify skin compromise.

Skin texture and turgor

Generally, healthy skin feels smooth and firm and has an even surface and good turgor (elasticity). To test turgor, gently grasp and pull up a fold of skin on a site such as the anterior chest below the clavicle. Does the skin return to place almost immediately after you release it, or does it stand up (“tent”)? Tenting indicates dehydration. But keep in mind that skin loses elasticity with age, so elderly patients normally have decreased turgor.

Skin temperature

With normal circulatory status, the skin is warm and its temperature is similar bilaterally. Areas of increased warmth or coolness suggest infection or compromised circulation. Be sure to check the temperature of skin surrounding the wound.

Wound assessment

Proper wound assessment can significantly influence patient outcome. Measure the wound carefully and document the condition of the wound bed. Remember that accurate descriptions are essential for guiding ongoing wound care. Repeat wound measurement and wound-bed assessment at least weekly, after the wound bed has been cleaned and debrided.

Keep in mind that assessing a chronic wound can be challenging. Wounds commonly have irregular shapes that can change quickly. Also, the multiple clinicians caring for the same patient may each describe the wound a bit differently.

Wound location

Note the precise anatomic location of the wound, as this can influence the wound care plan. A venous ulcer on the lower leg, for instance, requires different care than an arterial ulcer in the same site or a pressure ulcer on the ischium.

Circumference and depth

Use a paper or plastic measuring device to measure wound circumference and depth in centimeters (cm) or millimeters (mm). To promote accurate assessment of healing, be sure to use the same reference points each time you measure the wound.

You can use several methods to measure circumference. The most commonly used method of measurement is done in the head to toe direction. Measure the wound at its greatest length in that direction & measure the width at a 90 degree angle, at the widest point of the wound. Then multiply these two measurements (greatest length x greatest width) to obtain the total wound area. Although such linear measurements are imprecise, they yield gross information relative to wound healing when repeated over time.

Classify wound depth as partial thickness or full thickness.
•    Partial-thickness wounds are limited to the skin layers and don’t penetrate the dermis. They usually heal by reepithelialization, in which epidermal cells regenerate and cover the wound. Abrasions, lacerations, and blisters are examples of partial-thickness wounds.
•    Full-thickness wounds involve tissue loss below the dermis.
(Note: Pressure ulcers usually are classified by a four-stage system and diabetic foot ulcers by a grading system. Both systems are beyond this article’s scope.)
Measure and record wound depth based on the deepest area of tissue loss. To measure depth, gently place an appropriate device (such as a foam-tipped applicator) vertically in the deepest part of the wound, and mark the applicator at the patient’s skin level. Then measure from the end of the applicator to the mark to obtain depth.

Surrounding skin and tissue

Inspect for and document any erythema, edema, or ecchymosis within 4 cm of the wound edges, and reevaluate for these signs frequently. Because compromised skin near the wound is at risk for breakdown, preventive measures may be necessary.

Appearance of wound-bed tissue

Document viable tissue in the wound bed as granulation, epithelial, muscle, or subcutaneous tissue. Granulation tissue is connective tissue containing multiple small blood vessels, which aid rapid healing of the wound bed; appearing red or pink, it commonly looks shiny and granular. Epithelial tissue consists of regenerated epidermal cells across the wound bed; it may be shiny and silvery.

Check for nonviable tissue (also called necrotic, slough, or fibrin slough tissue), which may impede wound healing. It may vary in color from black or tan to yellow, and may adhere firmly or loosely to the wound bed. (See Picturing a necrotic wound by clicking the PDF icon above.)

Be sure to document the range of colors visible throughout the wound. Identify the color that covers the largest percentage of the wound bed. This color—and its significance—guide dressing selection.

Wound exudate

Document the amount, color, and odor of exudate (drainage) in the wound. Exudate with high protease levels and low growth factor levels may impede healing.

If the wound is covered by an occlusive dressing, assess exudate after the wound has been cleaned. Describe the amount of exudate as none, minimal, moderate, or heavy.

Describe exudate color as serous, serosanguineous, sanguineous, or purulent. Serous exudate is clear and watery, with no debris or blood present. Serosanguineous exudate is clear, watery, and tinged pink or pale red, denoting presence of blood. Sanguineous exudate is bloody, indicating active bleeding. Purulent exudate may range from yellow to green to brown or tan.

Describe wound odor as absent, faint, moderate, or strong. Note whether the odor is present only during dressing removal, if it disappears after the dressing is discarded, or if it permeates the room.

Wound edges

Wound edges indicate the epithelialization trend and suggest the possible cause and chronicity of the wound. The edges should attach to the wound bed. Edges that are rolled (a condition called epibole) indicate a chronic wound, in which epithelial cells are unable to adhere to a moist, healthy wound bed and can’t migrate across and resurface the wound.

Undermining and tracts

Gently probe around the wound edges and in the wound bed to check for undermining and tracts. Undermining, which may occur around the edges, presents as a space between the intact skin and wound bed (resembling a roof over part of the wound). It commonly results from shear forces in conjunction with sustained pressure. A tract, or tunnel, is a channel extending from one part of the wound through subcutaneous tissue or muscle to another part.

Measure the depth of a tract or undermining by inserting an appropriate device into the wound as far as it will go without forcing it. Then mark the skin on the outside where you can see or feel the applicator tip. Document your findings based on a clock face, with 12 o’clock representing the patient’s head and 6 o’clock denoting the feet. For instance, you might note “2.0-cm undermining from 7:00 to 9:00 position.”

Pain level

Ask the patient to quantify the level of pain caused by the wound, using the pain scale designated by your facility. Find out which pain-management techniques have relieved your patient’s pain in the past; as appropriate, incorporate these into a pain-management plan. Reevaluate the patient’s pain level regularly.

Wound-bed preparation

An evolving science, wound-bed preparation is crucial for minimizing or removing barriers to healing. The goal is to minimize factors that impair healing and maximize the effects of wound care. The key elements of wound-bed preparation are controlling bioburden and maintaining moisture balance. (For online resources on wound-bed preparation and other wound-care topics, see Where to get more information by clicking the PDF icon above.)

Controlling bioburden

Necrotic tissue and exudate harbor bacteria. A wound’s bioburden—the number of contaminating microbes—contributes to poor healing. All chronic wounds are considered contaminated or colonized, but not necessarily infected. In a colonized wound, healing is impeded as bacteria compete for nutrients; also, bacteria have harmful byproducts. To control bioburden, the wound must be cleaned and necrotic tissue must be debrided.

Cleaning the wound. Clean the wound before assessing it and applying a dressing. Use a noncytotoxic agent (typically, potable water, normal saline irrigating solution, or an appropriate wound-cleaning agent). Anti­septic solutions generally aren’t recommended for wound irrigation or dressings because they’re toxic to fibroblasts and other wound-repairing cells. If you must use such a solution, make sure it’s well diluted.

To ensure gentle cleaning or irrigation, pour solution over the wound bed or gently flush the wound with solution (using a 60-mL catheter-tip syringe) until the drainage clears. Know that pressurized irrigation techniques and whirlpool therapy aren’t recommended for wound cleaning because they disturb cell proliferation in the wound bed.

Debriding the wound. Debridement removes slough and necrotic tissue. Nonselective debridement techniques remove any type of tissue within the wound bed, whereas selective methods remove only necrotic tissue. (See Wound debridement techniques by clicking the PDF icon below.)

Maintaining moisture balance

To maintain moisture balance in the wound bed, you must manage exudate and keep the wound bed moist. The proper dressing (which may stay in place for days or longer) supports moist wound healing and exudate management. To minimize fluid pooling, a drain may be inserted into the wound. Negative-pressure wound therapy also may aid removal of excess exudate.

Choosing an appropriate dressing

The wound dressing plays a major role in maintaining moisture balance. Dressing selection is challenging because of the large number and variety of dressings available. Each product has specific actions, benefits, and drawbacks, so determining which dressing best suits the patient’s needs is a multifaceted process.

Dressing choice depends on such factors as wound type and appearance, exudate, presence or absence of pain, and required dressing change frequency. (See Dressings Options by clicking the PDF icon above.)

In a traditional dressing, gauze is applied in layers. The initial (contact) layer in the wound bed absorbs drainage and wicks it to the next layer; most often, this layer consists of woven cotton gauze or synthetic gauze. Remove the gauze gently, because it may be stuck to the wound or incision (especially if the gauze is cotton). For easier removal, moisten the dressing with normal saline solution to loosen it.

With a traditional dressing, the cover layer or secondary dressing is an abdominal pad with a “no-strike-through” layer next to the outside of the dressing. Be aware that wet-to-dry dressings are highly discouraged for their nonselective debriding effect and inability to provide a moist wound bed.

Reassess the patient’s wound at least weekly (after preparing the wound bed and dressing the wound) to determine healing progress. Keep in mind that wound-care management is a collaborative effort. Once you’ve assessed the patient, discuss your findings and subsequent wound management with other members of the team.

Wound care wisdom

Getting wiser about wound care will help your patients achieve good outcomes. Poor wound healing can be frustrating to patients, family members, and healthcare providers alike. Chronic wounds may necessitate lifestyle changes and lead to severe physical consequences ranging from infection to loss of function and even death. By performing careful assessment, tailoring patients’ wound care to wound etiology, and using evidence-based protocols to manage wounds, you can promote speedier wound healing, help lower morbidity, and improve quality of life.

Selected references
Bryant RA, Nix DP. Acute and Chronic Wounds: Current Management Concepts. 4th ed. St. Louis, MO: Mosby; 2011.

Gardener SE, Frantz R, Hillis SL, Park H, Scherubel M. Diagnostic validity of semiquantitative swab cultures. Wounds. 2007;(19)2:31-38.

Krasner DL, Rodeheaver GT, Sibbald RG. Chronic Wound Care: A Clinical Source Book for Healthcare Professionals. 4th ed. Wayne, PA: HMP Communications; 2007.
Langemo DK, Brown G. Skin fails too: acute, chronic, and end-stage skin failure. Adv Skin Wound Care. 2006;19(4):206-211.

Langemo DK, Anderson J, Hanson D, Hunter S, Thompson P. Measuring wound length, width, and area: which technique? Adv Skin Wound Care. 2008;21:42-45.

Milne C, Armand OC, Lassie M. A comparison of collagenase to hydrogel dressings in wound debridement. Wounds. 2010:22(11):270-274.

National Pressure Ulcer Advisory Panel and European Pressure Ulcer Advisory Panel. Prevention and Treatment of Pressure Ulcers: Clinical Practice Guideline. Washington, DC: National Pressure Ulcer Advisory Panel; 2009.

Ovington LG. Hanging wet-to-dry dressings out to dry. Adv Skin Wound Care. 2002;15(2):79-86.

Sibbald RG, Coutts P, Woo KY. Reduction of bacterial burden and pain in chronic wounds using a new polyhexamethylene biguanide antimicrobial foam dressing—clinical trial results. Adv Skin Wound Care. 2011;24(2):78-84.

Solway DR, Consalter M, Levinson DJ. Microbial cellulose wound dressing in the treatment of skin tears in the frail elderly. Wounds. 2010:22(1):17-19.

Wound Ostomy and Continence Nurses Society. Guideline for Prevention and Management of Pressure Ulcers. Mt. Laurel, NJ: Author; 2010

Patricia A. Slachta is a Clinical Nurse Specialist at The Queens Medical Center in Honolulu, Hawaii and an adjunct nursing instructor at the Technical College of the Lowcountry in Beaufort, South Carolina.

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