International Consensus Panel Recommendations for the Optimization of Traditional and Single-use Negative Pressure Wound Therapy in the Treatment ...
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Supplement to WOUNDS® February 2021
International Consensus Panel
Recommendations for the
Optimization of Traditional and
Single-use Negative Pressure
Wound Therapy in the Treatment
of Acute and Chronic Wounds
Theresa Hurd, PhD, MScN, MScEd ACNP, RN; Robert S. Kirsner, MD,
PhD; Joan J. Sancho-Insenser, MD; Sian Fumarola, MSc, BSc (Hon), RGN,
Diphea; Alison Garten, DPM; Munir Patel, MD; Leta McCarty Messinger,
RN, BSN, SWOC; and Rafael J. Diaz-Garcia, MD
This supplement was subject to the WOUNDS® peer-review process.
Supported by Smith+Nephew.Theresa Hurd, PhD, MScN, MScEd ACNP, RN1; Robert S. Kirsner, MD, PhD2; Joan J. Sancho-Insenser, MD3; Sian Fumarola, MSc, BSc (Hon), RGN, Diphea4; Alison Garten, DPM5; Munir Patel, MD6; Leta McCarty Messinger, RN, BSN, SWOC7; and Rafael J. Diaz-Garcia, MD8 1 Catholic Health System, Kenmore, NY; 2University of Miami Miller School of Medicine, Miami, FL; 3Universitat Autònoma de Barcelona: Universitat Address correspondence to: Autonoma de Barcelona, Barcelona, Spain; 4University Hospitals of North Valerie Marmolejo, DPM Midlands NHS Trust, Mid Staffordshire, UK; 5Piedmont Medical Center, Medical Writer Charlotte, NC; 6Mount Sinai Health System, New York, NY; 7Community Scriptum Medica Hospital of the Monterey Peninsula, Monterey, CA; and 8Allegheny Health University Place, WA 98466 Network, University of Pittsburgh School of Medicine, Pittsburgh, PA vlsdpm@gmail.com Disclosure: The authors of this manuscript are consultants for Smith+Nephew. Smith+Nephew provided financial support for convening the consensus panel and provided editorial support during the preparation of this manuscript. Acknowledgments: The authors would like to thank Dr V Marmolejo, Mr Brian Gilchrist, Dr E Huddleston, and Dr JM Murdoch for their contributions to the writing of the manuscript.
International Consensus Panel Recommendations for the Optimization of Traditional and Single-Use Negative Pressure Wound Therapy in the Treatment of Acute and Chronic Wounds Theresa Hurd, PhD, MScN, MScEd ACNP, RN1; Robert S. Kirsner, MD, PhD2; Joan J. Sancho-Insenser, MD3; Sian Fumarola, MSc, BSc (Hon), RGN, Diphea4; Alison Garten, DPM5; Munir Patel, MD6; Leta McCarty Messinger, RN, BSN, SWOC7; and Rafael J. Diaz-Garcia, MD8 ABSTRACT: Introduction. Currently, there are no international standardized guidelines or recommendations to guide the clinical decision-making process on when to initiate various negative pressure wound therapy (NPWT) systems for acute and chronic wounds. Specifically, no established recommendations or guidance exists regarding the type of NPWT system to use, traditional (tNPWT) or single-use (sNPWT), and how to transition between the 2 systems. Methods. An expert panel was convened to (1) provide recommendations to clinicians on when to consider NPWT use in acute and chronic wound management and (2) develop a practical decision-making tool to guide on the appro- priateness of the different NPWT modalities (tNPWT or sNPWT) and when they should be utilized. Results. The panel made recommendations and designed a clinical decision-making tool to aid the consideration for initiating NPWT and the optimal system to be utilized based on (1) therapeutic goals, (2) wound-related factors, (3) patient satisfaction and quality of life, (4) care setting-related factors, (5) economic-related factors, and (6) NPWT system-related factors. Conclusions. The panel recommendations took into consideration the clinical, operational, and financial factors in the clinical decision-making process of NPWT use to enable optimal patient and health care system outcomes. KEY WORDS: traditional negative pressure wound therapy, single-use negative pressure wound therapy, patient satisfaction, quality of life, operational efficiencies, financial efficiencies INDEX: Wounds 2021;33(suppl 2):S1–S11. INTRODUCTION date then is collected in a canister. The can limit its use. In attempts to overcome In the late 20th century, the introduc- mechanism of action of NPWT is now some of these barriers, an evolution in tion of negative pressure wound therapy reasonably understood, resulting in im- NPWT has occurred, including the ad- (NPWT; now referred to as traditional proved wound homeostasis, wound bed vent of single-use NPWT (sNPWT) NPWT [tNPWT]) launched a new era appearance, granulation tissue formation, systems.3 The sNPWT applies subatmo- in wound management. The tNPWT and improved tissue perfusion.1,2 spheric pressure to the wound through system entails the use of a pump that Traditional NPWT has become a an integrated dressing and pump system, delivers subatmospheric pressure to the standard treatment modality for wounds with or without an associated canister. wound bed through tubing secured to a of select etiologies, with several systems Various sNPWT systems exist, each with filler, typically gauze or foam, which is available on the market.3 However, clin- specific instructions for use (IFU) in placed into the wound and sealed with ical, operational, and financial obstacles, terms of wear time and requirement for an adhesive drape. The wound exu- examples of which are listed in Table 1, dressing change frequency. woundsresearch.com Supported by Smith+Nephew. February 2021 WOUNDS® S1
International Consensus Panel Recommendations
While advances in NPWT delivery Table 1. Clinical, operational, and financial obstacles that can limit tNPWT use
and systems have been made, there are Need for technical guidance and education to clinicians who are operating the sys-
currently no international or standard- tems within their own facilities
ized guidelines or recommendations on Patient pain
when to initiate NPWT as a treatment Tolerance and impact on quality of life
modality for selected acute and chron-
Human resources and time necessary to manage logistics for procurement and
ic wounds.4 Specifically, guidelines discharging a patient on tNPWT
should consider the type of NPWT sys- Access to tNPWT system
tem (tNPWT or sNPWT) that would
tNPWT pump device losses
be appropriate. At present, health care
Billing disputes
professionals determine which NPWT
tNPWT: traditional negative pressure wound therapy
treatment to use on a case-by-case ba-
sis or are driven by protocols that vary
by institution. This can lead to incon- Use of NPWT that incorporates fluid and the United States of America expe-
sistency and wide variability in wound instillation (iNPWT), a newer modal- rienced in wound care and NPWT use
assessments and choices of when to use ity of NPWT, is often touted to assist was convened. Specialties of the panel-
NPWT, how to use it, which system to in wound bed preparation through re- ists included dermatology, general sur-
use (tNPWT or sNPWT), and, if re- moval of microorganisms and dilution of gery, nursing, orthopedic surgery, plastic
quired, how to transition between the inflammatory and cytotoxic macromol- surgery, podiatry, tissue viability, and
2 systems. To address this issue, an ex- ecules in addition to the mechanisms of wound care. Prior to the initial meeting,
pert panel was convened to (1) advise action of tNPWT.8 However, a recent supplemental literature that further aug-
clinicians on when to consider NPWT systematic review on its use identified mented current expertise and experience
use in acute and chronic wound man- only 5 (4%) level 1 randomized con- was provided for review. Panel meetings
agement and (2) provide a practical de- trolled trials (RCTs), 4 of which com- were performed virtually in compliance
cision-making tool to guide on NPWT pared iNPWT with tNPWT.9 None of with guidelines and recommendations in
modality (tNPWT or sNPWT) and these 4 studies demonstrated any statis- place due to the COVID-19 pandemic.
when it should be utilized. tically significant difference between The entire panel met during the initial
Recommendations of this panel fo- iNPWT and tNPWT use in the number virtual meeting for introductions and
cused on tNPWT and sNPWT, as these of surgeries required, length of hospital to plan the consensus document, set ob-
are the 2 most common modalities of stay, readmission, duration of antibiotic jectives, and establish project timelines.
NPWT available worldwide. Discus- therapy, bacteria concentration, rein- Individual sessions were then held with
sion focused on the treatment of acute fection, duration of NPWT use, time panel members to gather information on
and chronic wounds and not closed sur- to wound healing, and proportion of personal experience with NPWT use
gical incision management or tempo- wounds healed. and how therapeutic goals, alongside
rary abdominal closure with NPWT, as The results of this systematic review consideration of how factors relating to
sufficient literature and guidelines exist provide evidence that iNPWT use can- the wound, patient, care setting, eco-
on the use of sNPWT in this setting.5,6 not replace the principles of good wound nomic, and device play a role in the pro-
Acute wounds are defined as those that bed preparation, namely proper debride- cess for deciding to initiate and discon-
proceed through the well-recognized ment, a key component in wound care.10 tinue NPWT and whether to implement
and overlapping phases of wound heal- Given these findings, iNPWT use was therapy with a traditional or single-use
ing—hemostasis, inflammatory, prolif- not included in the panel recommenda- system. A modified Delphi method11 was
erative, and remodeling—for resolution tions. employed to draft a consensus document
in a timely fashion. Chronic wounds based on these one-on-one sessions for
have delayed healing, often stalled in a Process of Consensus review. Several rounds of group discus-
dysregulated inflammatory phase, there- Development sions and edits then were performed fol-
fore making them unable to progress An international panel of clinicians from lowed by approval of the final document
to the proliferative phase of healing.7 Canada, Spain, the United Kingdom, by all panel members.
S2 February 2021 WOUNDS® Supported by Smith+Nephew. woundsresearch.comHurd et al
CONSENSUS RESULTS sulted in greater reduction in wound erations in the clinical decision-making
Overview size and reduced time in selected wound process of determining the optimal
Consensus statements on the factors to types to complete wound healing.13,14 A NPWT modality to employ for the
consider for initiation and discontinua- systematic review and meta-analysis of end goal desired.3 The aforementioned
tion of NPWT and the system to be uti- tNPWT use in the treatment of diabetic wound aspects, while often difficult to
lized were grouped into 6 categories: foot ulcers (DFUs) found tNPWT use quantify, vary by wound and patient.
1. therapeutic goals, resulted in a significantly shorter time to The tNPWT and sNPWT systems vary
2. wound-related factors, healing; greater reduction in wound size, in capability of use, based on wound area,
3. patient satisfaction and quality of life, including depth; and significant increase wound depth, and volume of exudate,
4. care setting-related factors, in complete wound healing compared and require consideration before use. For
5. economic-related factors, and with standard of care alone. A significant use in large, highly exuding wounds, tN-
6. NPWT system-related factors. reduction in amputation rates also was PWT is the best option as those wounds
reported.15 Use of a particular sNPWT require a powerful pump to deliver the
Therapeutic Goals system in an RCT specific to DFUs and appropriate NPWT and the capacity to
Consensus Statement 1: Initiation of venous leg ulcerations found a signifi- manage large volumes of exudate. De-
NPWT should be considered when there is cantly greater reduction in wound area pending on the tNPWT system utilized,
a need to: (1) promote granulation tissue; (2) and closure rates compared with use of the canister for fluid collection can hold
prepare a wound for closure—whether through tNPWT, supporting its use as a first-line between 300 mL to 1000 mL of exu-
use of an autograft, use of other advanced NPWT modality for these lower extrem- date.18-20 The tNPWT dressing changes
wound care modalities, delayed primary clo- ity wound types.16 are typically performed every 48 hours to
sure, or secondary intention; (3) control ede- In addition, tNPWT can be used for 72 hours, at least 2 to 3 times per week.
ma; (4) manage exudate; (5) achieve wound patients with complex and traumatic However, dressing change frequency can
stabilization; and (6) assist in stabilization of wounds, whereby it can assist in patient vary based on clinical assessment, patient
patients with complex and traumatic wounds. stabilization, allowing for step-down in acuity, and wound characteristics.
A recent comprehensive review of care and enhanced patient mobility.17 For The sNPWT systems can be used to
NPWT suggests that therapeutic goals these reasons, the panel determined that manage a variety of wounds, where the
may be either short term or long term.12 NPWT should be employed in the treat- associated dressing conforms and covers
Short-term goals include providing a ment of selected acute and chronic wounds the entire wound. In addition, sNPWT
dressing solution; managing wound ex- to achieve the desired therapeutic goals. can be used with or without a filler,
udate, odor, and pain; and preventing depending on the sNPWT system and
infection. Possible long-term goals in- Wound-Related Factors depth of the wound, as long as intimate
clude reducing wound exudate volume, Consensus Statement 2: Wounds appropri- contact between the wound bed and the
reducing the wound area, producing ate for consideration of sNPWT are those that NPWT dressing or filler is achieved. It is
healthy granulation tissue, and preparing meet device IFU, based on wound size, depth, a common misconception that the use of
the wound bed for intended wound clo- and exudate amount.The clinician must be fa- these systems is limited to smaller wounds
sure through secondary intention healing miliar with the IFU of the sNPWT system with low amounts of exudate as this is of-
or by covering the wound with a skin utilized, as these factors can considerably vary ten the focus of published reports.21-24 For
graft or a flap. between sNPWT devices. example, one sNPWT device (PICO;
Substantial evidence exists demon- Consensus Statement 3: Wounds appro- Smith+Nephew) can accommodate
strating that the application of NPWT priate for consideration of tNPWT are those moderate volumes of exudate due to the
expedites wound resolution and mini- in which the size, depth, and volume of exu- construct of the associated dressing hav-
mizes the potential for wound-related date are beyond the management capacity of a ing a superabsorbent core and top film
complications to occur. A systematic re- sNPWT system. layer with a high moisture vapor trans-
view and separate meta-analysis of RCTs Once the therapeutic goals and mission rate.25 A retrospective analysis of
comparing tNPWT with standard of care need for NPWT have been identified, 409 patients with wounds greater than or
in the treatment of a variety of acute and wound-related factors—size, depth, and equal to 2 cm in depth found that those
chronic wounds found that NPWT re- exudate amount—are the first consid- treated with this particular sNPWT sys-
woundsresearch.com Supported by Smith+Nephew. February 2021 WOUNDS® S3International Consensus Panel Recommendations
US: NON BRANDED (NO PRODUCT)
NPWT clinical decision tree for open wounds
Does the wound fit comfortably under one of the single use
1 negative pressure wound therapy (sNPWT) dressings?
Choose an sNPWT dressing which is larger than the wound.
OR
Yes Using a dressing which distributes NPWT across the entire surface
will deliver the benefits of NPWT across a wider zone including
the periwound1*
No
2 What’s the level of exudate?
OR
Low Moderate High
3 Does the dressing conform to the wound bed?
Use filler Use filler
No filler
OR OR
Small surface area and up to 2.0cm depth
Large surface area and up to 2.0cm depth OR between 2.0cm and 4.5cm depth† Greater than 4.5cm deep‡
4 Use gauze or foam
NPWT requires direct contact with the wound bed, and wounds with greater
depth, tracts, or undermining will require a foam or gauze NPWT filler
Begin application Begin application
Gauze wound filler Foam wound filler
with single use negative • Low to moderately exuding wounds • Wounds with high amounts of drainage with traditional negative
pressure wound therapy • Simple to apply and easy to train clinical
teams to use2-5
• Wounds with viscous fluid
• Wounds located on weight bearing surfaces
pressure wound therapy
(sNPWT) • Minimal pain on removal of dressings2,4-6§ (tNPWT)
• Wounds with tunneled, undermined,
or areas with uneven contours
• Some variants contains polyhexamethylene
biguanide (PHMB)
Smith+Nephew does not provide medical advice. The information presented is not, and is not intended to serve as, medical advice. It is the responsibility of healthcare professionals to determine and utilize the appropriate products and techniques according to their own clinical judgment for each
of their patients. The information presented may not be appropriate for all jurisdictions. For detailed product information, including indications for use, contraindications, precautions and warnings, please consult the product’s applicable Instructions for Use (IFU) prior to use.
*AIRLOCK Technology is proprietary technology to PICO sNPWT Dressings †Wounds must not contain exposed arteries, veins, nerves or organs; Depth figures correspond to data on PICO sNPWT (Smith+Nephew, Hull, UK) and may not be representative of other devices ‡ Wounds should generally be no more than 4.5cm in depth and must not
contain exposed arteries, veins, nerves or organs § p=0.046; n=31; Compared to black foam in acute post traumatic wounds. Reference: 1. Brownhill R. PICO◊ Biomechanical Study. Data on file report. August 2019. DS/19/211/R. 2. Hurd T, Chadwick P, Cote J, Cockwill J, Mole T, Smith J. Impact of gauze-based NPWT on the patient and nursing
experience in the treatment of challenging wounds. International Wound Journal. 2010;7(6):448-455. 3. Fraccalvieri M, Scalise A, Ruka E, et al. Negative pressure wound therapy using gauze and foam: Histological, immunohistochemical, and ultrasonography morphological analysis of granulation and scar tissues - Second phase of a clinical
study. In. European Journal of Plastic Surgery. Vol 37 2014:411-416. 4. Johnson S. V1STA® – A new option in Negative Pressure Therapy. Journal of Wound Technology. 2008;1:30-31. 5. Fraccalvieri M, Ruka E, Bocchiotti M, Zingarelli E, Bruschi S. Patient’s pain feedback using negative pressure wound therapy with foam and gauze. International
wound journal. 2011;8(5):492-499. 6. Smith+Nephew 2009. A prospective, open labelled, multicentre evaluation of the use of VISTA in the management of chronic and surgical wounds and A prospective, open labelled evaluation of the use of EZCare in the management of chronic and acute wounds. Internal Report. SR/CIME/010/012.
◊Trademark of Smith+Nephew. All Trademarks acknowledged. ©November 2020 Smith+Nephew. AWM-AWD-28194 | GMC1146c | US
Figure. A clinical decision-making tool for determination of initiation of traditional negative pressure wound therapy or single-use
negative pressure wound therapy in the management of open wounds.
tem required fewer dressing changes and Intimate contact between a STSG and with the surrounding skin, no exposed
had a substantially shorter time to heal- the wound bed for the first 5 to 7 days structures, and low amounts of exudate.
ing, compared with those treated with following application is critical to ensure Furthermore, the use of tNPWT or
standard of care.24 However, clinicians the graft receives necessary vascular and sNPWT can facilitate both wound bed
need to be familiar with the labelling and nutrient supplies for successful take.26-30 preparation, as outlined in the afore-
IFU of the sNPWT system chosen, as Similar principles exist for application of mentioned therapeutic goals, and serve
exceptions exist. To provide guidance to skin substitutes, despite the fact they do as a bolster dressing after graft place-
health care professionals, a clinical deci- not take.30 To facilitate intimate contact ment. Several studies have demonstrated
sion-making tool to determine if an acute between the STSG or skin substitute the use of tNPWT as a bolster dressing
or chronic wound is suitable for tNPWT and the wound bed, a bolster dressing over STSG (range, 4–7 days), thereby
or sNPWT use has been designed and such as an NPWT dressing is recom- allowing for greater patient mobility,
shown in the Figure. mended to minimize shear, traction, and increased graft take rates, shorter healing
Consensus Statement 4: sNPWT can fluid accumulation between the wound times, reduced need for repeat proce-
be considered as a bolster dressing for wounds bed and graft. The optimal wound bed dures, and improved long-term wound
in which closure is being obtained via a for STSG or skin substitute placement resolution rates.27-30 These findings were
split-thickness skin graft (STSG) or applica- is one that is well-vascularized with a consistent with tNPWT use for bolster-
tion of a skin substitute. healthy, noninfected granular base flush ing of artificial dermal skin substitutes.30
S4 February 2021 WOUNDS® Supported by Smith+Nephew. woundsresearch.comHurd et al
The use of sNPWT in this setting is op- Table 2. Factors contributing to patient anxiety and stress with tNPWT use
timal due to the dynamics of the shallow Lack of understanding on the benefits of tNPWT
wound bed, the recommendation that
Patient perception that the clinician performing the dressing change is unfamiliar
the bolster dressing remain in place as with proper application techniques
long as appropriate (typically 4–7 days), The need to reorganize their lives around frequent follow-up appointments
minimal impact on patient mobility, and
A decreased positive self-image and self-esteem due to being self-conscious of the
the potential for early discharge home.29 noise and visual appearance of the tNPWT pump device when in public
Consensus Statement 5: The wound tNPWT: traditional negative pressure wound therapy
should be reassessed at regular intervals (ide-
ally every 2 weeks) to determine if NPWT
treatment should be continued or discontinued Patient Satisfaction and pain or discomfort with application or re-
and for the appropriateness of transition from Quality of Life moval of the associated silicone adhesive
tNPWT to sNPWT. Consideration should be Consensus Statement 6: When NPWT is dressing.35 An increased concentration of
made for reassessment of NPWT use if thera- deemed an appropriate treatment modality for vascular endothelial growth factor, im-
peutic goals have not been met or there is min- acute and chronic wounds, sNPWT should proved granulation tissue quality, and
imal or no change in wound size, amount of be the first-line modality utilized to increase reduced scar tissue formation has been
granulation tissue, or reduction in edema and patient satisfaction and quality of life. Patient demonstrated with use of a gauze as op-
exudate volume. Transition from tNPWT to education on NPWT as a treatment modality, posed to a foam filler, theorized to be due
sNPWT should be considered when the wound the benefits of its use, and the advantages of to reduced tissue in-growth within the
size, depth, and exudate amount are within the sNPWT over tNPWT can improve patient gauze filler.36-38 This improved granula-
management capacity of the sNPWT system satisfaction and treatment compliance. tion tissue quality has been demonstrated
that is being considered for use. Some patients have expressed optimism to reduce the need for wound bed de-
A focused, regular, wound assessment with NPWT treatment due to use of an bridement prior to skin graft application.
every few weeks provides an appropriate advanced treatment modality on their Reduced tissue in-growth with use of a
time frame to assess a wound for chang- wound that has the potential to expedite gauze filler also has been found to result
es, therefore, enabling a clinical decision resolution.26-28 However, patient quality in significantly less patient-reported pain
to be made on whether to continue or of life has been shown to be reduced with during dressing changes compared with a
discontinue therapy or to use adjunct/ tNPWT use.29,30 A systematic review foam filler.37 When a clinician determines
alternative pertinent interventions.4 As of the effects of tNPWT use on patient that NPWT will help attain the therapeu-
wound size, depth, and exudate amount quality of life demonstrated a significant tic goals outlined for the treatment of an
decrease, the transition from tNPWT to increase in patient anxiety, thought to be acute or chronic wound, use of a sNPWT
sNPWT should be considered as a means related to frequent painful dressing chang- system when clinically appropriate should
to enhance patient satisfaction, increase es and restrictions on activities of daily be first considered to allow for improved
quality of life through improved mobili- living.31 Pain during tNPWT dressing patient experience and quality of life.
ty, and ease of discharge from care facil- changes has been reported to occur in up Minimizing the pain related to tNPWT
ities. Other institutional and cost-related to 67% of patients.32 This pain is thought dressing changes should positively impact
benefits of transitioning a patient from to be related to tissue damage that occurs patient quality of life; however, patient
tNPWT to sNPWT are addressed in the during dressing changes because of tissue anxiety and stress with tNPWT use can
economic-related factors section of this growth into the foam filler.32 Use of a still exist due to other factors (Table 2).
consensus document. The panel agreed silicone-based NPWT dressing, a gauze Patients may therefore benefit from ed-
that NPWT should be discontinued once wound filler, or a nonadherent wound ucation on tNPWT, including benefits
therapeutic goals are met or when the contact layer between the wound bed of its use and what its use entails. Patient
wound has not progressed towards reso- and the foam filler may help reduce pain education has been demonstrated to in-
lution. Wounds that have not progressed and tissue trauma during dressing chang- crease patient confidence and their abil-
towards resolution should be reassessed es.33-38 Patients in a retrospective cohort ity to adapt to treatment with positivity,
for causative factors and further appro- study of sNPWT on complex dehisced such as finding creative ways to dress and
priate interventions. abdominal wounds did not complain of carry the tNPWT pump device in order
woundsresearch.com Supported by Smith+Nephew. February 2021 WOUNDS® S5International Consensus Panel Recommendations to conceal it and the associated tubing of sNPWT, more than 90% were able ly resulting in less time spent in critical connection.39-42 If the wound is suitable, to shower/bathe and perform daily ac- care and a reduced length of hospital many of these patient-related concerns tivities on their own (when disconnect- stay.17,29,38,44 Availability of necessary can be addressed with sNPWT use. ing the sNPWT pump from the dressing tNPWT supplies and access to nurses The sNPWT systems are generally during washing).21 Over 97% of these specialized in tNPWT application have easy to apply, small, and quiet, making patients reported no discomfort with been factors cited in delayed discharge them easier to conceal and less of a hin- wearing the system and were pleased and prolonging hospital length of stay. drance on mobility and activities of daily with its treatment. For patients who may Single-use NPWT may further facilitate living. For example, more than 80% of have difficulty in being concordant with transition of patient care from the inpa- nurses in a study of 326 home care pa- follow-up appointments due to their liv- tient to outpatient setting or may negate tients were pleased with the sNPWT ing environment or other medical con- the need for hospitalization altogeth- system, with 96% finding it easy to ap- ditions, such as patients who are home- er.4,21,29,45 Use of an sNPWT system in ply,21 resulting in easier application and less or have other social barriers, specific 21 patients (8 retrospectively reviewed less frequent dressing changes, since the sNPWT systems are optimal due to ease and 13 prospectively evaluated) with dressing can be left in place for up to 7 of its removal, minimal risk for retained varying surgical and traumatic wounds, days. A prospective RCT comparing sN- dressings, and ability to use without a facilitated earlier patient discharge and PWT with tNPWT use on the treatment filler (if appropriate).17,21 subsequent outpatient management that of lower extremity ulcerations found an enhanced patient quality of life and re- overall increase in patient satisfaction in Care Setting-Related duced associated hospital costs.24 Use the sNPWT group, with willingness to Factors of this same system at a major trauma use the system again due to comfort and Consensus Statement 8: tNPWT is a valu- center over a 5-year period of time also reduced negative impact on activities of able treatment option for patients with acute demonstrated greater ability of transition daily living and sleep.16 This positive im- or chronic wounds that are large and complex. from or negated the need for inpatient pact on patient satisfaction and quality of Benefits of tNPWT include stabilization of care.44 Of 213 wounds studied, 93.4% of life supports sNPWT as a first-line mo- the wound and patient, patient mobility, more which were open, more than 50% were dality in wounds eligible for its use. rapid transition from critical care units to step- able to be managed in the outpatient Consensus Statement 7: sNPWT use down units, and reduced hospital length of stay. setting, thereby increasing hospital in- may be an optimal choice for ambulatory pa- Initial use of sNPWT or early conversion to patient throughput.44 For the remainder tients with wounds eligible for sNPWT use sNPWT from tNPWT in eligible wounds of the patients, the sNPWT device was who must return to work or face barriers to should be considered to assist in transitioning applied in the operating room or inpa- access follow-up medical appointments. patients from inpatient to outpatient care. tient setting, with subsequent ability for Restriction of movement, decreased Clinical evidence exists to support earlier discharge and reduced length of self-esteem, increased dependency on using NPWT to expedite patient and stay. Similarly, this was associated with others, perception of the loss of con- wound stabilization and wound man- reduced health care costs and enhanced trol, and increased anxiety have been agement. This has resulted in the wide patient flow due to bed availability for implicated as reasons patients desire to adoption of NPWT for the management other non-surgical and surgical patients discontinue tNPWT, particularly with of complex wounds, and the trend is requiring hospital admission. patients of a younger age.33,37,39,40,42 With for NPWT to be deployed in the home age and additional factors included here- as well as in hospitals.43 Initiation of Economic-Related Factors in, sNPWT may be an excellent alter- NPWT within the first 2 days of care Consensus Statement 9: The application of native. Being on the whole smaller and as opposed to day 3 or later in patients sNPWT as the initial NPWT modality or quieter, sNPWT makes it easy to secure with large traumatic or open surgical as conversion from tNPWT can reduce over- and conceal compared with tNPWT, wounds has been shown to reduce the all health care costs as well as assist in the facilitating discreet treatment and al- risk for infection and delayed healing, transition of patients from inpatient to out- lowing patients greater independence is associated with more rapid weaning patient care. and quality of life.16,21,40,41 A study of 326 of patients off ventilator support, and It has been argued that one barri- home care patients found that with use encourages patient mobility, potential- er to the implementation of newer S6 February 2021 WOUNDS® Supported by Smith+Nephew. woundsresearch.com
Hurd et al
Table 3. Consensus statements by category
THERAPEUTIC GOALS
Consensus Initiation of NPWT should be considered when there is a need to:
Statement 1 1) promote granulation tissue,
2) p
repare a wound for closure—whether through use of an autograft, use of other advanced wound care
modalities, delayed primary closure, or secondary intention,
3) control edema,
4) manage exudate,
5) achieve wound stabilization, and
6) a
ssist in stabilization of patients with complex, traumatic, open wounds.
WOUND-RELATED FACTORS
Consensus Wounds appropriate for consideration of sNPWT are those that meet device IFU, based on wound size, depth,
Statement 2 and exudate amount. The clinician must be familiar with the IFU of the sNPWT system utilized, as these factors
can considerably vary between sNPWT devices.
Consensus Wounds appropriate for consideration of tNPWT are those in which the size, depth, and volume of exudate are
Statement 3 beyond the management capacity of a sNPWT system.
Consensus The sNPWT system can be considered as a bolster dressing for wounds in which closure is being obtained via
Statement 4 a split-thickness skin graft or application of a skin substitute.
Consensus The wound should be reassessed at regular intervals (ideally every 2 weeks) to determine if NPWT treatment
Statement 5 should be continued or discontinued and for the appropriateness of transition from tNPWT to sNPWT. Consid-
eration should be made for reassessment of NPWT use if therapeutic goals have not been met or there is min-
imal or no change in wound size, amount of granulation tissue, or reduction in edema and exudate volume.
Transition from tNPWT to sNPWT should be considered when the wound size, depth, and exudate amount are
within the management capacity of the sNPWT system that is being considered for use.
PATIENT SATISFACTION AND QUALITY OF LIFE
Consensus When NPWT is deemed an appropriate treatment modality for acute and chronic wounds, sNPWT should be
Statement 6 the first-line modality utilized to increase patient satisfaction and quality of life. Patient education on NPWT as
a treatment modality, the benefits of its use, and the advantages of sNPWT over tNPWT can improve patient
satisfaction and treatment compliance.
Consensus sNPWT use may be an optimal choice for ambulatory patients with wounds eligible for sNPWT use who must
Statement 7 return to work or face barriers to access follow-up medical appointments.
CARE SETTING-RELATED FACTORS
Consensus tNPWT is a valuable treatment option for patients with acute or chronic wounds that are large and complex.
Statement 8 Benefits of tNPWT include stabilization of the wound and patient, patient mobility, more rapid transition from
critical care units to step-down units, and reduced hospital length of stay. Initial use of sNPWT or early con-
version to sNPWT from tNPWT in eligible wounds should be considered to assist in transitioning patients from
inpatient to outpatient care.
ECONOMIC-RELATED FACTORS
Consensus The application of sNPWT as the initial NPWT modality or as conversion from tNPWT can reduce overall health
Statement 9 care costs as well as assist in the transition of patients from inpatient to outpatient care.
NPWT DEVICE-RELATED FACTORS
Consensus The decision on which NPWT system to utilize should be based on factors such as:
Statement 10 1) published evidence demonstrating the effect on wound management and healing,
2) system ease of use,
3) ease of system device and supply procurement,
4) logistical and technical support provided,
5) cost effectiveness of individual systems, and
6) user/patient acceptability.
NPWT: negative pressure wound therapy; sNPWT: single-use negative pressure wound therapy; IFU: instructions for use;
tNPWT: traditional negative pressure wound therapy
woundsresearch.com Supported by Smith+Nephew. February 2021 WOUNDS® S7International Consensus Panel Recommendations technologies in wound management is NPWT System-Related Although clinical outcomes are sim- a perception that they are too expen- Factors ilar across tNPWT systems, differences sive.46 While it is true that the unit price Consensus Statement 10: The decision on in how sNPWT systems function may of a NPWT device is more than that of which NPWT system to utilize should be ultimately influence clinical outcomes a simple dressing (eg, foam or non-wo- based on factors such as: (1) the published evi- and therefore selection. As mentioned in ven), this fails to take into consideration dence demonstrating the effect on wound man- Consensus Statement 2, wound depth and evidence that early intervention with agement and healing, (2) system ease of use, (3) exudate handling capability of sNPWT NPWT results in an improvement in ease of system device and supply procurement, systems can vary. The mechanism of ac- overall healing rates with consequent (4) logistical and technical support provided, (4) tion and impact on the wound itself may cost savings, especially in labor costs, cost effectiveness of individual systems, and (5) also vary across the available systems. Re- as well as an earlier improvement in user/patient acceptability. duced inflammation, greater quality and patient quality of life, with earlier dis- Once the decision is made that a pa- maturation of granulation tissue, collagen charge, and the ability to manage the tient’s wound could benefit from NPWT, deposition, and rates of reepithelization wound in the community.4,29,45,47 the following objectives should be consid- were reported in a recent preclinical study The effect of these benefits may be ered: the desired therapeutic goal(s); patient comparing sNPWT to tNPWT.51 The further enhanced by the choice of de- satisfaction and quality of life; and care set- authors postulated that these results as well vice. One retrospective, cost-minimi- ting-related and economic-related factors. as differences in clinical outcomes seen in zation analysis of Medicare paid claims The last component of NPWT initiation is a recent study on lower extremity wounds found a considerable economic benefit the decision regarding the type of NPWT are attributed to the unique dressing con- of using sNPWT rather than tNPWT system (tNPWT or sNPWT) to utilize, as struction, which allows simultaneous de- for several wound types.48 In an eco- several different devices are currently avail- livery of negative pressure and fluid man- nomic analysis of a previously published able. The NPWT system-related factors agement within the dressing itself. This study,16 the authors found that sNPWT that require consideration include treat- results in the application of NPWT not provided an expected cost saving of ment objectives, patient activities of daily only to the wound but to the entire area $7756 per patient and an expected re- living, ease of dressing application, supply of tissue under the dressing, while also ne- duction of 1.67 open ulcer weeks per procurement, logistical and technical sup- gating the need for a wound filler if so de- patient over 12 weeks and a cost re- port provision, cost effectiveness to both sired. The absence of a wound filler, along duction of $15 749 and 5.31 open ulcer the patient and health care system, and with a low trauma wound contact layer, weeks over 26 weeks.49 user/patient acceptability. reduces the frequency of dressing change Specifically, for tNPWT, it may be Regarding tNPWT, a retrospective requirements and minimizes tissue disrup- associated with operational issues re- analysis of the 2 most commonly used tion to the wound and surrounding skin lated to the fact that the pump is reus- tNPWT systems found no difference in that is associated with NPWT dressing able, must be decontaminated between healing rates, length of therapy, and rate changes. This results in less wound bed patients, and various consumables must of complications between the 2 systems.50 inflammation, greater quality and matu- be purchased to enable it to function. A systematic review of the literature also ration of the granulation tissue forming, An international quantitative survey of found comparable clinical outcomes in a and greater rates of reepithelization.51 The providers in the acute care setting deter- broad range of chronic and acute wounds aforementioned considerations, coupled mined that lost and/or misplaced pumps (n = 1107) between tNPWT systems.12 with cost effectiveness of treatment to the (due to patient transfer/discharge to Thus, the decision on which tNPWT patient and facility, should assist in provid- other wards or facilities); low pump de- device to use should be based on that er selection of the optimal tNPWT and vice fleet utilization when pumps were which best mitigates the operational and sNPWT system for patient treatment. not promptly returned, not properly financial burdens associated with tNPWT stored, or went unused; and lack of vis- use. Ease of access to the system, associat- CONCLUSIONS ibility of the therapy provision (ie, lack ed supplies, and immediate pump device The use of pathways designed to determine of patient monitoring systems) were the availability can enhance optimal patient if sNPWT use would be an optimal first- 3 main operational and financial issues outcomes and reduced patient and health line modality for NPWT have demon- associated with tNPWT use.47 care system costs. strated significant reduction in wound S8 February 2021 WOUNDS® Supported by Smith+Nephew. woundsresearch.com
Hurd et al
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