Get positive results with negative-pressure wound therapy

August 6, 2012February 25, 2020 Wound Care Advisor

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.

How to benefit from electrical stimulation for the treatment of chronic wounds

August 1, 2017February 25, 2020 Wound Care Advisor

One of the most amazing things about the human body is its ability to repair itself. Lacerations, punctures, abrasions all heal with little or no care. Chronic wounds, those that persist day after day, are a small subset of wounds but they compose a troublesome minority. They include, but are not limited to, diabetic foot ulcers (DFU), venous leg ulcers (VLU), and pressure ulcers (colloquially known as bedsores). These represent the body’s failure to fix itself. (more…)

Atrium Medical Center division earns award for clinical excellence

April 17, 2017February 25, 2020 Wound Care Advisor

MIDDLETOWNThe Wound Care Center and Hyperbaric Services at Atrium Medical Center recently was recognized with a national award for clinical excellence.

The Center of Distinction Award was presented by Healogics, the nation’s leading and largest wound care management company. The center was also honored with the Healogics President’s Circle Award.

The awards recognize outstanding clinical outcomes for 12 consecutive months, including patient satisfaction higher than 92 percent, and a wound healing rate of at least 91 percent in less than 31 median days. (more…)

Laughlin Center Named Wound Care Center Of The Year

April 13, 2017February 25, 2020 Wound Care Advisor

Laughlin Center for Wound Care and Hyperbarics has been honored as the Wound Care Center of the Year as well as recognized with a national award for continued excellence in wound healing by Healogics Inc., a wound care management company.

Leaders, physicians and clinicians from Laughlin Center for Wound Care and Hyperbarics recently gathered to celebrate the center’s receipt of the Robert A. Warriner III Center of Excellence award, according to a news release.

(more…)

Covenant Health Wound Care Experts Earn National, Regional Recognition

April 11, 2017February 25, 2020 Wound Care Advisor

LUBBOCK, TX (NEWS RELEASE) – The Covenant Center for Wound Care & Hyperbaric Medicine has been honored as a Wound Care Center® of the Year by Healogics, Inc., the nation’s leading and largest wound care management company. The center also was awarded Center of Distinction and the President’s Circle Award.

The center has achieved patient satisfaction rates higher than 92 percent, a healing rate of at least 91 percent in less than 31 median days and healed almost 90 percent of its patients in less than 14 weeks. Out of the 630 Centers eligible in 2016, only seven centers across the country received this prestigious award. Covenant’s center was awarded as Center of the Year for the southwest region, which includes Texas, Oklahoma, Louisiana and New Mexico. (more…)

Jim Nabors Would Just Cry

March 25, 2017February 25, 2020 Wound Care Advisor

by Dr. Michael Miller

For those of you not as familiar with the Hoosier State as you should be, I used to think it was essentially paradise. Jim Nabors of Gomer Pyle fame is our ubiquitous, tuneful icon with his always well-received “Back Home in Indiana” as a mantra to that source of pride. Our former Governor “My Man” Mitch Daniels was a genius who, using a combination of intelligence, common sense and the persuasive powers of a midwest Svengali, created an economic model that our neighbors can only lust after. Our medicolegal climate is among the best in the US and well it should be. However, while there are some extraordinary caregivers and facilities here, a recent US News and World Report curiously showed that almost none of our hospitals made their “Best of” lists in any category. That is not to say there is bad care but to not have a single facility in an entire state even achieve an honorable mention gives one pause to reflect. The State newspapers were notoriously quiet on this concerning fact despite their trumpeting of who does what well, when and where. (more…)

Alternate universes – Einstein’s insanity

March 25, 2017February 25, 2020 Wound Care Advisor

I remain absolutely amazed that there are so many people doing the same thing and yet doing it so completely different. Depending on where a patient’s wound care and orders originate from, the care I try to translate from that starting point is always a combination of dressing regimens worthy of computer code in their simplicity. The only thing usually missing is the diagnosis. It’s as though they come from an identical planet in an alternate universe.

The issue is that there is the complete dissociation of what is done for a given wound care problem in one practice setting versus another. Having stayed as far away from hospital-based wound care as possible, I continue to be amazed by hospital wound teams touting their expertise while using two to three times a day dressing changes and therapies that are the antithesis of any identifiable evidence. They actually expect entities receiving their cases (including home healthcare agencies, LTAC, skilled facilities, and others) to copy the identical care scenario regardless of their widely variable situations. In fact, the only constant is the patient and his or her condition. (more…)

eBook: Skin Damage Associated with Moisture and Pressure

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Tips on how to differentiate and goals for protection and management.

* Identify how wounds are classified according to wound depth and etiology.
* Describe the etiology of a pressure injury (PI) and incontinence-associated skin damage (IAD).
* Discuss evidence-based protocols of care of prevention and management if IAD and PIs.
* Describe the NPUAP-EPUAP Pressure Injury Classification System.
* Identify appropriate products that can be used for preventioin and treatment of IAD and PIs.

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Breaking silos: Effective wound healing means treatment across the continuum

March 13, 2017February 25, 2020 Wound Care Advisor

Around 6.5 million patients in the U.S. suffer from chronic wounds, such as pressure injuries or ulcers. Treatment costs $25 billion each year, representing a sizable and growing problem. Despite the wide impact of chronic wounds, it’s rare to see specialized, effective wound care delivered across the care continuum.

A chronic non-healing wound is a surrogate marker for illness. These patients require holistic management of their co-morbidities and continuity across care settings.

Despite this, a great deal of emphasis has been placed on treating wounds as singular events, managed topically with expensive dressings and support surfaces. This is only a small part of wound healing.

As a physician focused solely on wound care, I have learned that we must shift the focus from simply treating the wound to treating the wounded patient. The impact in the post-acute care setting in particular is worthy of evaluation and discussion, as up to 29% of patients in long-term care facilities will experience a pressure ulcer, posing serious legal, financial, and staffing implications.

For those providers working outside long-term care, there is little understanding of challenges facing LTC providers. Acute providers do not often ask, for example, how are my LTC partners reimbursed? How are they staffed? What are the requirements and regulatory pressures they face? Asking these questions would facilitate a more productive dialogue with a focus on collaborative prevention, rather than waiting until a chronic wound occurs in the LTC setting.

Creating an integrated wound care community

To address the needs of the present and growing population of patients with chronic wounds, Healogics developed an integrated wound care community model, to coordinate the wound healing process across all care settings. The program utilizes Healogics Specialty Physicians, a subspecialty group of physicians and providers with extensive training solely focused on wound care.

HSPs provide expert inpatient consultation and ensure safe transition of patients out of the hospital into the appropriate care setting. Because HSPs see the patient regardless of post-discharge venue, patients receive the same quality of care whether they are going home, to a skilled-nursing, assisted living, or LTC setting. Because chronic wounds are surrogate markers for illness, we have realized it’s essential to have an integrated, multi-setting, and multi-disciplinary process to treat the patient and their co-morbidities.

Data collected at a pilot IWCC site in the Midwestern U.S. from 2014 to 2016 revealed very positive trends for chronic wound patients. In the acute care setting, the average length of stay decreased from 9.41 days to 5.64 days, and total cost of care per patient was reduced from $10,670 to $7,248.

We’re excited by these promising results, which were revealed at the American College of Wound Healing and Tissue Repair Conference last December. We look forward to refining and expanding the model by helping our partners in acute and LTC settings standardize their practices, use evidence-based clinical guidelines, mobilize technologies and processes, and pay critical attention to patient safety and value-based outcomes.

When it comes to wound healing, no venue of care should operate alone—an integrated solution that creates continuity for the patient is critical. There are four things LTC facilities can do to break down the silos:

Wound Photography – How it Benefits Clinical Documentation

February 24, 2017February 25, 2020 Wound Care Advisor

Accurate assessment and documentation of wounds is essential for developing a comprehensive plan of care. Photography now plays a key role in wound care. The use of digital photography has enhanced the reliability and accuracy of wound documentation. Though a wound assessment in patient files includes details such as location, depth, odor, condition of surrounding tissue and other details, a visual record can be worth even more.

Digital photography is becoming a more prevalent documentation tool. According to an article published in McKnight’s, forensic nursing experts recommend using photographs to document injury. The photos show both how an injury occurred and how it is healing.

The National Pressure Ulcer Advisory Panel (NPUAP) also supports photography as a more accurate means for assessment of wound dimensions and wound base over time.

A visual confirmation to the written record, these images:

Facilitate better diagnosis
Enhance clinical documentation
Help to monitor the progress of wound healing
Help prevent litigation in wound management
Allow inter-disciplinary communication among the wound care team

Skin substitutes: Understanding product differences

December 8, 2016February 25, 2020 Wound Care Advisor

Skin substitutes (also called tissuebased products and dermal replacements) are a boon to chronic wound management when traditional therapies have failed. When selecting skin substitutes for their formularies, wound care professionals have many product options—and many decisions to make.

Repair of skin defects has been a pressing concern for centuries. As early as the 15th century BC, Egyptian physicians chronicled procedures and herbal treatments to heal wounds, including xenografts (skin from another species). The practice of applying allografts (human cadaver skin) to wounds was first documented in 1503. In 1871, autologous skin grafting (skin harvested from the the person with the wound) was tried. Next came epithelial- cell seeding, which involves scraping off the superficial epithelium of healthy skin and transplanting the cells onto the wound. (more…)

Frequently asked questions about support surfaces

December 5, 2016February 25, 2020 Wound Care Advisor

The National Pressure Ulcer Advisory Panel (NPUAP) describes support surfaces as “specialized devices for pressure redistribution designed for management of tissue loads, microclimate, and/or other therapeutic functions.” These devices include specialized mattresses, mattress overlays, chair cushions, and pads used on transport stretchers, operating room (OR) tables, examination or procedure tables, and gurneys. Some support surfaces are part of an integrated bed system, which combines the bed frame and support surface into a single unit. (more…)

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