EWMA Document: Negative Pressure Wound Therapy

Reducing Infections and Improving Healing in Complex Wounds: A Systematic Review and Meta-Analysis

Background and Objectives: Wound management in complex and traumatic injuries remains a significant clinical challenge, with a high risk of surgical site infections (SSIs) and associated complications. This systematic review and meta-analysis aim to evaluate the effectiveness of diverse interventions, including Negative Pressure Wound Therapy (NPWT), advanced dressings, irrigation techniques, antibiotic regimens, and innovative therapies, in improving wound healing outcomes and reducing infection rates. Materials and Methods: An exhaustive literature search focused on the use of NPWT, dressings, and antibiotics in the care of chronic wounds was conducted following PRISMA guidelines in the PubMed, Scopus, Web of Science, and CINAHL databases. Eligible studies included randomized controlled trials and prospective cohorts assessing interventions for wound care in trauma, surgical, and chronic wound settings. The risk of bias was assessed using the ROB2 tool. Subgroup analyses were performed to evaluate the relative risk (RR) of infections based on the intervention type. Results: The analysis included 17 studies spanning diverse geographical and clinical settings. NPWT demonstrated significant benefits in reducing infection rates compared to control groups (RR: 0.590, 95% CI: 0.458-0.760, and p < 0.001). Although advanced dressings demonstrated clinically relevant benefits as reported across the included studies, the meta-analysis did not reveal statistically significant differences (RR: 0.516, 95% CI: 0.242-1.100, and p = 0.087). Antibiotic therapies significantly reduced infections when administered within 24 h of injury, while low-pressure irrigation techniques effectively minimized bacterial contamination without causing tissue damage. Growth factors and honey-based treatments exhibited promising results in accelerating wound healing and reducing infection risks in chronic wounds. Conclusions: NPWT emerges as a highly effective intervention for infection prevention and wound healing, supported by robust evidence. Advanced dressings and innovative therapies show potential but require further research for conclusive evidence. These findings underscore the importance of tailoring wound care strategies to the clinical context and patient needs. Future research should focus on long-term outcomes and cost-effectiveness analyses to enhance the integration of these therapies into clinical practice.

Patient preference with regard to negative pressure wound therapy and participation in wound care: a qualitative study

OBJECTIVE

To explore the experiences and preferences of patients with wounds treated with negative pressure wound therapy (NPWT) regarding shared decision-making and patient participation.

METHOD

Semi-structured interviews were conducted with adult patients treated with NPWT. Interview topics included shared decision-making and patients' active participation in wound treatment. Thematic analysis was applied to identify themes.

RESULTS

The interview cohort comprised ten patients. Four themes emerged: (1) Having a wound makes patients uncertain and thus influences their quality of life; (2) NPWT influences patients' daily lives; (3) Patients consider professional treatment decisions most important in the decision-making processes; (4) Self-management of wounds is accepted by patients only for low-complexity and well-healing wounds under supervision. Participants emphasised their worries about the future and the impact of the wound/treatment on their families. After being thoroughly informed, participants preferred that health professionals decide on the treatment choice. In addition, participants and/or their relatives did not want to actively participate in complex wound care. As well as expressing a need for qualified wound care professionals, participants reported that they did not want to be or feel responsible for the wound treatment.

CONCLUSION

Shared decision-making and active patient participation are underused and underexposed topics in wound care. Patients' recognition of the importance of their personal preferences can facilitate shared decision-making.

"Sucking the trouble" out of troubleshooting wound vacs: Video based curriculum development and implementation in a live tissue model

We hypothesized that non-surgeon, Negative Pressure Wound Therapy (NPWT) naïve participants would better identify device functions and troubleshoot failures after being exposed to a video curriculum (VC) compared to similar participants exposed to clinical practice guidelines (CPGs). VC and critical action step development was followed by randomization of 115 non-surgical, NPWT naïve participants into either the CPG or VC study groups. Participants individually identified components of the NPWT system and then worked as a team to troubleshoot three scenarios on an in vivo porcine model. VC participants better identified all NPWT components and functions (p ​< ​0.001), demonstrated correct cannister attachment (p ​< ​0.001) and performed a seal check (p ​< ​0.001). VC teams performed more critical action steps in the leak (p ​= ​0.011) and obstruction (p ​= ​0.001) scenarios. In post-event surveys, participants were more likely to find the VC easy to use and informative and were likely to recommend the videos to a colleague (p ​= ​0.008, p ​= ​0.019, p ​= ​0.02). VC participants demonstrated improved competency in individual NPWT component identification and team-based troubleshooting of NPWT failures. This VC represents an effective alternative to existing CPGs.

Salvage of the Mastectomy Pocket in Infected Implant-Based Breast Reconstruction Using Negative-Pressure Wound Therapy with Instillation and Dwell: A Systematic Review and Meta-Analysis

Background: Breast cancer, irrespective of gender, stands as the most prevalent cancer globally, with an annual estimate of 2.3 million new cases. Surgical intervention, including therapeutic mastectomy (excluding prophylactic procedures), is performed on approximately 28% of patients, necessitating subsequent breast reconstruction. Although implant-based breast reconstruction (IBBR) is frequently employed due to its relative ease compared to autologous methods, it presents a notable risk for complications at mid-term such as peri-prosthetic infections. These complications can lead to implant loss and the eventual compromise of the mastectomy pocket. To address these complications, negative pressure wound therapy with instillation and dwell (NPWTi-d) emerges as a promising rescue intervention, known for its capacity to significantly reduce bacterial load and potentially salvage compromised soft tissues. However, the evidence supporting its effectiveness in infected pockets after mastectomy is currently insufficient. This study aims at investigating the efficacy of NPWTi-d in the management of peri-prosthetic mastectomy pocket infection. Methods: A thorough literature search has been concluded through PubMed, Web of Science, and Cochrane databases up until 18th March 2025 on evaluating NPWTi-d's ability to manage peri-prosthetic infections and preserve mastectomy pockets for subsequent reconstruction. Furthermore, a meta-analysis on the salvage rate of the mastectomy pocket was carried out, while for other outcomes, a descriptive analysis was applied. Results: Nine studies (n = 230 patients) were included, investigating whether the us NPWTi-d was successful in treating peri-prosthetic infection and preserving the mastectomy pocket for subsequent reconstruction by expander or implant. The pooled salvage rate of the implant-based BR due to the use of NPWTi-d was 86.1% (95%CI: 80.6-91.6%). Preservation of the skin envelope avoided secondary reconstruction after a defined time interval, reducing number and complexity of surgeries and related costs. Conclusions: This innovative surgical approach should be considered in selected cases of infected implants after breast reconstruction in breast cancer centers. However, the actual low level of evidence is based on case series, and it is not possible to define generally accepted recommendations for the use of NPWTi-d to save the mastectomy pocket.

Application of Negative-Pressure Wound Therapy in Patients with Wound Complications after Flap Repair for Vulvar Cancer: A Retrospective Study

OBJECTIVE

To analyze the characteristics of postoperative wound complications (WCs) in patients following vulvectomy with flap repair and evaluate the efficacy of negative-pressure wound therapy (NPWT) in wound healing.

METHODS

This study retrospectively reviewed 17 patients with WCs following vulvectomy with flap repair at a tertiary comprehensive hospital from January 2016 to December 2022. All patients were treated with NPWT, and the wound healing rate, healing time, and NPWT-related complications were observed.

RESULTS

The most common WCs were seroma and lymphorrhea (52.94%; nine cases), followed by wound infection (35.29%, six cases), fat liquefaction (23.53%, four cases), wound dehiscence (17.65%, three cases), and wound ischemia (5.88%, one case). The main locations for flap WCs were the vulva (64.71%), thigh (35.29%), and pubic symphysis (23.53%). One patient halted treatment; the remaining 16 patients all achieved complete healing with a mean healing time of 43.50 ± 17.92 days. One complication was associated with the use of NPWT: procedural pain (17.65%, three cases).

CONCLUSIONS

The use of NPWT may contribute to accelerated wound healing after flap repair in vulvar cancer and is safe for clinical application.

The WOCA negative pressure wound therapy device designed for low resource settings

Negative Pressure Wound Therapy (NPWT) is a treatment that promotes healing of chronic wounds. Despite high prevalence of chronic wounds in Low- and Middle-Income Countries (LMICs), NPWT devices are not available nor affordable. This study aims to improve chronic wound care in LMICs by presenting the Wound Care (WOCA) system, designed for building, testing and use in LMICs. Design requirements were formulated using input from literature, ISO standards, and wound care experts. The WOCA design was developed to provide safe, portable, user-friendly and affordable NPWT to patients in LMICs. The design features an adjustable operating pressure ranging from -75 to -125 mmHg, a battery for portability, a 300 ml canister, overflow protection, and system state alarms. An Arduino controls the pressure and monitors the system state. Three prototypes were developed and built in Nepal, and their performance was evaluated. Pressure control was 125 ± 10 % mmHg, internal leakage was 7.5 ± 4.3 mmHg/min, reserve capacity was 189 ± 16.9 ml/min, and overflow protection and alarm systems were effectively working. Prototype cost was approximately 280 USD. The WOCA demonstrates to be a locally producible NPWT device that can safely generate a stable vacuum. Future research will include clinical trials situated in LMICs.

Development of a Cellular Assay as a Personalized Model for Testing Chronic Wound Therapeutics

Exudates of nonhealing wounds contain drivers of pathogenicity. We utilized >800 exudates from nonhealing and healing wounds of diverse etiologies, collected by 3 different methods, to develop a wound-specific, cell-based functional biomarker assay. Human dermal fibroblast proliferation served as readout to (i) differentiate between healing and nonhealing wounds, (ii) follow the healing process of individual patients, and (iii) assess the effects of therapeutics for chronic wounds ex vivo. We observed a strong correlation between wound chronicity and inhibitory effects of individual exudates on fibroblast proliferation, with good diagnostic sensitivity (76-90%, depending on the sample collection method). Transition of a clinically nonhealing to a healing phenotype restored fibroblast proliferation and extracellular matrix formation while reducing inflammatory cytokine production. Transcriptional analysis of fibroblasts exposed to ex vivo nonhealing wound exudates revealed an induction of inflammatory cytokine and chemokine pathways and the unfolded protein response, indicating that these changes may contribute to the pathology of nonhealing wounds. Testing the wound therapeutics, PDGF and silver sulfadiazine, yielded responses in line with clinical experience and indicates the usefulness of the assay to search for and profile new therapeutics.

Clinical efficacy of antibiotic-loaded bone cement and negative pressure wound therapy in multidrug-resistant organisms diabetic foot ulcers: a retrospective analysis

Objective

The purpose of this study was to investigate the clinical efficacy of antibiotic-loaded bone cement (ALBC) combined with Negative pressure wound therapy (NPWT) aspiration technique in the treatment of multidrug-resistant diabetic foot ulcers (MDRO-DFUs).

Methods

A retrospective analysis of the clinical data of 80 patients with MDROs-DFU who were used Vacuum sealing drainage (VSD) as NPWT excipient and met the inclusion criteria from January 2019 to January 2024 at our hospital. Patients were divided into an experimental group and a control group, with 40 cases in each. The control group received conventional treatment, routine debridement, and NPWT treatment, while the experimental group received ALBC treatment in addition to the treatment plan of the control group. Measurements of blood inflammatory indicators, foot hemodynamic indicators, wound bacterial clearance time, wound healing time, and hospital stay were taken before and after treatment for both groups.

Results

Inflammatory indexes, Vascular endothelial growth factor(VEGF), and internal diameter of dorsalis pedis arteriosus of both groups after treatment were significantly better than those before treatment, and the improvement of the experimental group was more obvious than that of the control group; the experimental group had a significantly shorter time of trauma bacterial turnover, healing time of trauma, and hospitalization time compared with that of the control group (P<0.05).

Patient and wound factors associated with WOUND-Q scales measuring health-related quality of life: An international cross-sectional study

The WOUND-Q is a patient-reported outcome measure for individuals with any type of chronic wound. This study aimed to identify patient and wound factors associated with the four WOUND-Q health-related quality of life (HRQL) scales: Life impact, Psychological, Sleep, and Social. Adults with a chronic wound were recruited internationally through clinical settings between August 2018 and May 2020, and through an online platform (i.e. Prolific) in September 2022. Multivariable linear regression analyses were conducted to identify factors significantly associated with the WOUND-Q scales. The assessments obtained were 1273, 1275, 706, and 1256 for the Life Impact, Psychological, Sleep, and Social scales, respectively. The mean age of participants was 55 (SD = 18) years; most (66%) had a single wound, and most (56%) wounds had lasted more than 6 months. The most common causes were trauma, surgery, and diabetic foot ulcer. Wound characteristics associated with worse scores on at least one of the scales were drainage, vacuum treatment, aetiologies (i.e. diabetic foot ulcer, trauma, other, multiple), duration (i.e. 10-11 months), having four or more wounds, smell, and sleep interference, while wound location different from the face or neck was associated with better scores (p < 0.05). Patient factors associated with worse scores included having diabetes or a comorbidity, whereas increasing age or male gender were associated with better scores (p < 0.05). Sleep disturbances had the largest negative influence on HRQL scores. This study identified factors affecting HRQL in individuals with chronic wounds. Understanding these associations can inform better management and treatment strategies to improve HRQL for these patients.

Effectiveness of most common adjuvant wound treatments (skin substitutes, negative pressure wound therapy, hyperbaric oxygen therapy, platelet-rich plasma/fibrin, and growth factors) for the management of hard-to-heal diabetic foot ulcers: a meta-analysis of randomized controlled trials for the development of the Italian Guidelines for the Treatment of Diabetic Foot Syndrome

AIM

To assess the effects of several adjuvant therapies (AT) commonly used in the treatment of diabetic foot ulcers (DFU). The present meta-analysis was designed to support the development of the Italian Guidelines for the Treatment of Diabetic Foot Syndrome.

METHODS

A Medline and Embase search were performed up to May 20th, 2024 collecting all RCTs including diabetic patients or reporting subgroup analyses on diabetic patients with DFU comparing AT with placebo/standard of care (SoC), with a duration of at least 12 weeks. Prespecified endpoints were: ulcer healing (principal), time-to-healing, major and minor amputation, serious adverse events (SAE), and all-cause mortality. AT assessed were: growth factors (GF), Platelet-rich plasma and fibrin (PRP/F), skin substitutes (SS), negative pressure wound therapy (NPWT), and hyperbaric oxygen therapy (HBOT). Mantel-Haenzel Odds ratios and 95% confidence intervals (MH-OR, 95% CIs) were either calculated or extracted directly from the publications. Weighted mean differences and 95% CIs were calculated for continuous variables.

RESULTS

Fifty-one studies fulfilled all inclusion criteria (3, 5, 27, 8, and 8 with GF, PRP/F, SS, NPWT, and HBOT, respectively). Participants treated with any of the explored AT had a significantly higher ulcer healing rate (MH-OR ranging from 2.17 to 4.18) and shorter time-to-healing in comparison with SoC/placebo. Only PRP/F and HBOT showed a significantly lower risk of major amputation (MH-OR: 0.32(0.11;0,93; p = 0.04 and 0.28(0.10;0,79; p = 0.02, respectively), despite a higher risk of SAE. No other significant effects on the above-reported prespecified endpoints were observed. For the primary endpoint, the quality of evidence was rated as "high" for all the AT, except for NPWT ("moderate").

CONCLUSIONS

In conclusion, AT can actively promote wound healing and shorten time-to-healing in patients with DFU. HBOT and PRP/F also showed a reduction of the risk of major amputation, despite a higher rate of SAE.

Factors related to successful mesh salvage with negative pressure wound therapy: a retrospective cohort study

BACKGROUND

Mesh salvage using negative pressure wound therapy (NPWT) in cases of mesh infection following hernia repair has emerged as an alternative to early mesh removal. However, the factors related to the success or failure of mesh salvage with NPWT remain unclear.

METHODS

This retrospective cohort study included 61 patients with mesh infections after hernia repair treated with NPWT between 2018 and 2024. We analyzed demographic, clinical, and surgical variables, as well as the bacterial spectrum and antimicrobial susceptibility. A binary logistic regression model was used to identify factors associated with NPWT failure, defined as the need for mesh removal.

RESULTS

Mesh salvage was successful in 80.3% of cases. Active smoking was significantly associated with NPWT failure (OR = 7.82, CI 95% 1.05-64.8; p = 0.044). Other factors, such as age, body mass index, Charlson comorbidity index, mesh type, and mesh position, were not significantly related to failure. Most infections were caused by Staphylococcus aureus (24.6%) and Escherichia coli (22.9%).

CONCLUSIONS

NPWT is an effective method for salvaging infected meshes, with a high success rate. Active smoking was identified as a risk factor for NPWT failure, highlighting the need for early identification of patients who may benefit from alternative approaches. Further studies are required to develop predictive models for NPWT success in mesh salvage.

Revisiting negative pressure wound therapy from a mechanobiological perspective supported by clinical and pathological data

Negative pressure wound therapy is used often in the management of surgical incisions, chronic wounds and subacute lesions, and there are numerous publications discussing its clinical application and outcomes. However, whilst clinical use and associated literature have expanded since these systems became commercially available in the 90s, important research and discussion around the mode of action have waned, leading to a deficit in the understanding of how this important therapy influences healing. Further, much research and many publications are predominantly reflective, discussing early theorem, some of which have been proven incorrect, or at least not fully resolved leading to misunderstandings as to how the therapy works, thus potentially denying the clinician the opportunity to optimise use towards improved clinical and economic outcomes. In this narrative review, we discuss established beliefs and challenges to same where appropriate and introduce important new research that addresses the manner in which mechanical strain energy (i.e., deformations) is transferred to tissue and how this influences biological response and healing. In addition, we assess and discuss the effect of different negative pressure dressing formats, how they influence the mode of action and how this understanding can lead to more efficient and effective use and clinical economic outcomes.

An Update on Diabetic Foot Ulcer and Its Management Modalities

One of the most prominent challenges related to the management of diabetes is a diabetic foot ulcer (DFU). It has been noted that > 50% of ulcers become clinically infected in diabetic patients, and up to 15-25% of diabetic patients may acquire DFU in their lifetime. DFU treatment is complicated for immune-compromised individuals and has a low success rate. Therefore, diabetic foot care must begin as soon as possible to avoid negative outcomes such as significant social, psychological, and economic consequences, lower limb amputation, morbidity, and mortality. The information provided in this piece is crucial for assisting clinicians and patients regarding novel and cutting-edge treatments for DFU. Due to irrational recourse to antibiotics, etiological agents like bacteria and fungi are exhibiting multidrug resistance (MDR), making topical antibiotic treatments for wounds ineffective with the drugs we currently have. This review article aims to compile the various strategies presently in use for managing and treating DFUs. The piece covers topics like biofilm, diagnosis, drug resistance, multidisciplinary teamwork, debridement, dressings, offloading, negative pressure therapy, topical antibiotics, surgery, cell and gene therapy, and other cutting-edge therapies.

Current State of Science in Negative Pressure Wound Therapy

Significance: Negative pressure wound therapy (NPWT) was introduced in clinical practice in the early 1990s and has become widely used to manage wounds in inpatient and outpatient care. Recent Advances: Evolutions of the initial technology include the development of new dressing interfaces and tubing configurations, the addition of instillation to improve cleansing, and various changes in design to improve portability. Research has been conducted to understand mechanisms of action and to demonstrate clinical utility. NPWT has been suggested as a valuable approach for various complex and/or nonhealing wounds, and recommendations for its use have emerged in several guidelines. Future Directions: The evidence, composed of a combination of randomized controlled trials, case series, cohort studies, real-world evidence, systematic reviews, meta-analyses, and expert opinion, is heterogeneous and still building. This special mini forum issue presents the current state of the science for NPWT and new studies providing insights on some innovative ways clinicians use this technology to help improve outcomes in a variety of wound types.

Postoperative Wound Care in Dermatologic Surgery: Update And Narrative Review

Dermatologic surgery is associated with a very low risk of complications. There is no widely accepted, evidence-based protocol with recommendations for postoperative wound care after dermatologic surgery. In this narrative review, we will be discussing the evidence on surgical wound care products and procedures. Overall, we found relatively few studies and, in many cases, a lack of statistically significant differences, possibly because of the low rate of complications. We'll be discussing the evidence on when we should initiate wound care procedures and their frequency, the type of ointment and antiseptics that should be applied, and the type of dressings that should be used. Despite the very few studies available on postoperative wound care following dermatologic surgery, there is sufficient evidence as to not recommend the use of prophylactic topical antibiotics. We also analyze the currently available evidence on surgical wound care in special situations, such as management of skin grafts, partial skin graft donor sites, xenografts/biomembranes, and surgical wounds to the legs.

[Translated article] Postoperative Wound Care in Dermatologic Surgery: Update And Narrative Review

Dermatologic surgery is associated with a very low risk of complications. There is no widely accepted, evidence-based protocol with recommendations for postoperative wound care after dermatologic surgery. In this narrative review, we will be discussing the evidence on surgical wound care products and procedures. Overall, we found relatively few studies and, in many cases, a lack of statistically significant differences, possibly because of the low rate of complications. We'll be discussing the evidence on when we should initiate wound care procedures and their frequency, the type of ointment and antiseptics that should be applied, and the type of dressings that should be used. Despite the very few studies available on postoperative wound care following dermatologic surgery, there is sufficient evidence as to not recommend the use of prophylactic topical antibiotics. We also analyze the currently available evidence on surgical wound care in special situations, such as management of skin grafts, partial skin graft donor sites, xenografts/biomembranes, and surgical wounds to the legs.

Rare Breast Emergency: A Case of Necrotizing Fasciitis of the Breast in a Lactating Patient

Necrotizing fasciitis is a rare but potentially lethal infection of the skin and soft tissue, commonly seen in the perianal and gluteal regions. Concomitant diabetes is a predisposing factor. Primary necrotizing fasciitis of the breast is rare in healthy women. In this article, we present a very rare case of breast necrotizing fasciitis in the context of the literature. We report the case of a 35-year-old female patient who had given birth two months prior to admission and developed necrotizing fasciitis of the breast during lactation. The patient presented to the emergency department with sepsis. Examination revealed widespread erythema, dark discoloration, edema, and necrotic areas indicative of wet gangrene and crepitation in the left breast. Necrotizing fasciitis is a rapid and aggressive disease that can be fatal, and delayed diagnosis may unfortunately result in death. Therefore, careful evaluation of all suspected cases, especially for patients with risk factors, is crucial for early diagnosis and timely treatment. This case highlights the importance of recognizing necrotizing fasciitis of the breast in lactating women to ensure prompt and appropriate management, potentially saving lives.

The Role of Negative Pressure Wound Therapy (NPWT) in the Management of Vasculitic Wounds: Case Series of Eight Patients

Vasculitic ulcers belong to the category of atypical ulcers and are traditionally very slow to heal. The aim of this study is to retrospectively analyze the files of eight patients with vasculitic ulcers treated with negative pressure wound therapy (NPWT). Immunosuppression was initiated at least two weeks prior to starting NPWT. We suggest that this is a safe and promising protocol to treat these hard-to-heal ulcers.

The Evolution of Commercial Negative Pressure Wound Therapy Systems over the Past Three Decades

Significance: Since the introduction of the first commercial negative pressure wound therapy (NPWT) system nearly three decades ago, several key technological innovations have led to the wide adoption of the therapy. This is a review of the history and innovation of commercial NPWT systems for adjunctive management of open wounds. Recent Advances: Technical modifications have broadened NPWT options to include innovative dressing interfaces, tubing configurations, power sources, capability of topical wound solution instillation or irrigation, canister versus canister-free configurations, smart technology, and disposable versus larger reusable therapy units. While these options complicate product selection, they have greatly expanded the potential to manage a wide variety of wounds in patients who previously may not have been candidates for NPWT. Critical Issues: Basic yet mandatory requirements of NPWT include delivering an accurate level of negative pressure to the wound bed, maintaining a seal, removing wound surface exudate through the dressing interface, and patient adherence to prescribed therapy. Meeting these requirements is challenging in the face of variable wound types, wound locations, exudate levels, and exudate viscosity. While there are a growing number of marketed NPWT systems, each may have different characteristics and performance. Evaluating the functionality of each system and relevant accessories is complicated, especially as additional manufacturers enter the market. Understanding the key innovations and specific challenges they are intended to solve may aid health care providers in selecting appropriate NPWT technologies for patients. Future Directions: Evolving technology, including artificial intelligence, will likely play a major role in redefining NPWT safety, simplicity, and reliability.

Negative pressure wound therapy for extensive soft tissue defects of the lower extremity in a teenager: A case study

Key Clinical Message

Negative pressure wound therapy (NPWT) aided in the management of complex soft tissue injury in a 14-year-old girl by managing moisture, reducing oedema, and stimulating wound granulation less than 2 months after the accident and prepared the skin for skin grafting, thus successfully saving the limb.

Abstract

This case study describes the use of a tubular bandage encompassing the whole limb to deliver successful NPWT in the treatment and reconstruction of extensive soft tissue damage extending from the right lower extremity to the hip in a 14-year-old female.

Barriers and co-designed strategies for the implementation of negative pressure wound therapy in acute pediatric burn care in Australia: A mixed method study

PURPOSE

Pediatric burn injuries are a global clinical issue causing significant morbidity. Early adjunctive negative pressure wound therapy improves re-epithelialization rates in children with burns, yet adoption in acute burn care is inconsistent. This investigation aimed to determine barriers to the implementation of adjunctive negative pressure wound therapy for the acute management of pediatric burns and co-design targeted implementation strategies.

METHODS

A sequential mixed methods design was used explore barriers to adjunctive negative pressure wound therapy implementation in acute pediatric burn care. An online questionnaire was disseminated to healthcare professionals within four major Australian pediatric hospitals, each with a dedicated burns service. Barriers were coded according to the Consolidated Framework for Implementation Research (CFIR). Semi-structured interviews with senior clinicians tailored implementation strategies to local contexts. A stakeholder consensus meeting consolidated implementation strategies and local processes.

RESULTS

Sixty-three healthcare professionals participated in the questionnaire, and semi-structured interviews involved nine senior burn clinicians. We identified eight implementation barriers across all five CFIR domains then co-designed targeted strategies to address identified barriers. Barriers included lack of available resources, limited access to knowledge and information, individual stage of change, patient needs and resources, limited knowledge and beliefs about the intervention, lack of external policies, intervention complexity, and poor implementation planning.

CONCLUSION

Multiple contextual factors affect negative pressure wound therapy uptake in acute pediatric burn settings. Results will inform a multi-state stepped-wedge cluster randomized controlled trial. Additional resources, education, training, updated policies, and guidelines are required for successful implementation. It is anticipated that adjunctive negative pressure wound therapy, in conjunction with tailored implementation strategies, will enhance adoption and sustainability.

TRIAL REGISTRATION

Australian and New Zealand Clinical Trials Registry: ACTRN12622000166774. Registered 1 February 2022.

Design and Implementation of a Negative Pressure Wound Therapy Device Prototype

Chronic wounds pose a significant challenge for the healthcare system, impacting millions worldwide. While conventional treatments lack efficacy, specialized methods are effective albeit expensive and less available in comparison. Negative pressure wound therapy (NPWT) provides an isolated and conducive environment for wound healing, resulting in remarkable clinical advantages, however it remains economically inaccessible in latinamerican countries like Peru. This work developed an NPWT prototype tailored for developing countries, focusing on effective functionality assessed through a testing protocol based on ISO 10079-1:2022 Medical Suction Equipmen guidelines. Results demonstrated reliable device performance, highlighting areas for improvement.

Continuous negative-pressure wound therapy improves the survival rate of skin grafts and shortens the time required for skin graft survival

BACKGROUND

The effectiveness of negative-pressure wound therapy (NPWT) in skin graft fixation has been demonstrated in several clinical studies. However, in vitro and in vivo studies on skin graft fixation with NPWT have been scarce. In this in vivo study, we aimed to determine whether NPWT fixation enhances skin graft survival and how it contributes to improving skin graft survival biologically.

MATERIALS AND METHODS

We harvested skin from the bilateral abdominal wall of 88 mice after anesthetizing them. Full-thickness skin grafts (FTSGs) were performed on contralateral harvest sites, and grafts were fixed using NPWT (continuous and intermittent modes), conventional compression methods, and wrapping with polyurethane foam as a control group. On days 5 and 10 of grafting, the survival rates of the FTSGs were evaluated. Immunohistopathological analysis and measurement of the expression levels of vascular endothelial growth factor (VEGF), basic fibroblast growth factor (FGF-2), and epidermal growth factor (EGF) were performed.

RESULTS

The survival rates of FTSG in the continuous NPWT group were significantly higher than those in the other groups. The number of capillaries in the dermis was significantly higher in the continuous NPWT group than in the other groups. In the wound bed, VEGF levels were significantly higher in both NPWT groups than in the other groups.

CONCLUSION

Continuous NPWT increases the survival rate of FTSGs and shortens the duration of skin graft survival.

Negative Pressure Level and Effects on Bacterial Growth Kinetics in an in vitro Wound Model

Negative Pressure Wound Therapy (NPWT) has been widely adopted in wound healing strategies due to its multimodal mechanism of action. While NPWT's positive impression on wound healing is well-established, its effect on bacterial load reduction remains equivocal. This study investigates NPWT's efficacy in reducing bioburden using an in vitro porcine skin model, focusing on the impact of Staphylococcus aureus and Staphylococcus epidermidis. Custom-made negative pressure chambers were employed to apply varying negative pressures. Porcine skin was cut into 5 × 5 cm squares and three standardized wounds of 6 mm each were created using a biopsy punch. Then, wounds were infected with S. aureus and S. epidermidis bacterial suspensions diluted 1:10,000 to obtain a final concentration of 1.5 × 104 CFU/ml and were placed in negative pressure chambers. After incubation, bacterial counts were expressed as colony-forming units (CFU) per ml. For S. aureus at 120 hours, the median CFU, mean area per colony, and total growth area were notably lower at -80 mmHg when compared to -250 mmHg and -50 mmHg, suggesting an optimal negative pressure for the pressure-dependent inhibition of the bacterial proliferation. While analyzing S. epidermidis at 120 hours, the response to the negative pressure was similar but less clear, with the minor CFU at -100 mmHg. The influence of intermittent negative pressure on the S. epidermidis growth showed notably lower median CFU with the interval therapy every hour compared to the S. aureus control group. This study contributes valuable insights into NPWT's influence on the bacterial load, emphasizing the need for further research to reformulate its role in managing contaminated wounds.

An exploratory randomized clinical trial on negative pressure wound therapy for lower limb full-thickness skin grafts of dermatosurgical patients

Full-thickness skin graft (FTSG) reconstructions of lower limbs are especially prone to wound complications. Negative pressure wound therapy (NPWT) enhances wound healing, but no broad evidence exists if it promotes graft take of lower leg FTSGs. In this investigator-initiated, prospective, randomised and controlled trial, 20 patients with ambulatory FTSG reconstruction for lower limb skin cancers were randomised for postoperative treatment with either NPWT, or conventional dressings. As outcomes, adherence of the skin graft 1 week postoperatively, any wound complications within 3 months, including ≥3 weeks delayed wound healing, and the number of additional postoperative visits were compared. In both groups, grafts adhered equally well (p = 0.47); 80% of NPWT-treated and 100% of control group grafts adhered >90%. There was no significant difference in the number of postoperative complications/delayed wound healing (p = 0.65); 70% of patients in the NPWT and 50% in the control group developed a wound complication. Both groups had an equal number of patients with at least three additional control visits (p = 1.0). The study was discontinued after 20 patients were recruited, as no benefit from NPWT was seen. To conclude, the study showed no benefit from NPWT for lower limb FTSGs.

Effect of platelet-rich plasma combined with negative pressure wound therapy in treating patients with chronic wounds: A meta-analysis

A meta-analysis was conducted to comprehensively explore the effects of platelet-rich plasma (PRP) combined with negative pressure wound therapy (NPWT) in treating patients with chronic wounds. Computer searches were conducted, from database infection to November 2023, in EMBASE, Google Scholar, Cochrane Library, PubMed, Wanfang and China National Knowledge Infrastructure databases for randomized controlled trials (RCTs) on the use of PRP combined with NPWT technology for treating chronic wounds. Two researchers independently screened the literature, extracted data and conducted quality assessments according to the inclusion and exclusion criteria. Stata 17.0 software was employed for data analysis. Overall, 18 RCTs involving 1294 patients with chronic wounds were included. The analysis revealed that, compared with NPWT alone, the use of PRP combined with NPWT technology significantly improved the healing rate (odds ratios [OR] = 1.92, 95% confidence intervals [CIs]: 1.43-2.58, p < 0.001) and total effective rate (OR = 1.31, 95% CI: 1.23-1.39, p < 0.001), and also significantly shortened the healing time of the wound (standardized mean difference = -2.01, 95% CI: -2.58 to -1.45, p < 0.001). This study indicates that the treatment of chronic wounds with PRP combined with NPWT technology can significantly enhance clinical repair effectiveness and accelerate wound healing, with a high healing rate, and is worth further promotion and practice.

The effect of negative pressure wound therapy on the outcome of diabetic foot ulcers: A meta-analysis

Negative pressure injury is one of the auxiliary methods of treating diabetes foot ulcers. It has been shown to be superior to conventional techniques in randomized controlled trials (RCTs). Nevertheless, the results of observational research are still scarce. A systematic review of RCTs and observations was carried out to evaluate the effectiveness and security of negative pressure wound therapy (NPWT) treatment for diabetes foot ulcers. Three English e-databases have been found for NPWT research. The meta-analyses of the comparative studies provided point estimates of results. Intermediate results were given as median and binary values were given in the form of odds ratios (OR). Seventeen trials, 13 RCTs and four randomized, controlled trials were found in the survey. Of these, 831 were treated with NPWT, 834 were treated with standard therapy. A total of 14 studies have been conducted to investigate the influence of NPWT on the healing of diabetic foot ulcers(DFU). In the study, NPWT was shown to speed up the healing of the wound in DFU patients(OR, 2.57; 95% CI, 1.72, 3.85 p < 0.0001). A subgroup analysis showed that NPWT was associated with an acceleration of the wound healing rate in 10 RCT trials (OR, 2.48; 95% CI, 1.58, 3.89 p < 0.001). In the four nRCT trials, NPWT was also shown to speed up the healing of the wound(OR, 2.95; 95% CI, 1.03, 8.42 p = 0.04). In 11 studies, the influence of NPWT on amputations of diabetes mellitus (DM) foot ulcers was investigated. The results showed that NPWT was associated with a reduction in amputations (OR, 0.53; 95% CI, 0.37, 0.74 p = 0.0002).In a subgroup of RCT trials, nine RCT trials showed a reduction in amputations(OR, 0.61; 95% CI, 0.43, 0.87 p = 0.007). In both nRCT trials, NPWT also showed a reduction in amputations (OR, 0.03; 95% CI, 0.00, 0.24 p = 0.001). Generally speaking, NPWT can help to heal the wound and lower the risk of amputations in people with diabetes. The subgroup analysis showed similar results for the RCT and non-RCT trials. NPWT can be used to treat diabetes foot ulcers caused by diabetes.

Research progress on and molecular mechanism of vacuum sealing drainage in the treatment of diabetic foot ulcers

Diabetic foot ulcers (DFUs) are common chronic wounds and a common complication of diabetes. The foot is the main site of diabetic ulcers, which involve small and medium-sized arteries, peripheral nerves, and microcirculation, among others. DFUs are prone to coinfections and affect many diabetic patients. In recent years, interdisciplinary research combining medicine and material science has been increasing and has achieved significant clinical therapeutic effects, and the application of vacuum sealing drainage (VSD) in the treatment of DFUs is a typical representative of this progress, but the mechanism of action remains unclear. In this review, we integrated bioinformatics and literature and found that ferroptosis is an important signaling pathway through which VSD promotes the healing of DFUs and that System Xc-GSH-GPX4 and NAD(P)H-CoQ10-FSP1 are important axes in this signaling pathway, and we speculate that VSD is most likely to inhibit ferroptosis to promote DFU healing through the above axes. In addition, we found that some classical pathways, such as the TNF, NF-κB, and Wnt/β-catenin pathways, are also involved in the VSD-mediated promotion of DFU healing. We also compiled and reviewed the progress from clinical studies on VSD, and this information provides a reference for the study of VSD in the treatment of DFUs.

A Custom-Tailored Multichannel Pressure Monitoring System Designed for Experimental Surgical Model of Abdominal Compartment Syndrome

In experimental medicine, a wide variety of sensory measurements are used. One of these is real-time precision pressure measurement. For comparative studies of the complex pathophysiology and surgical management of abdominal compartment syndrome, a multichannel pressure measurement system is essential. An important aspect is that this multichannel pressure measurement system should be able to monitor the pressure conditions in different tissue layers, and compartments, under different settings. We created a 12-channel positive-negative sensor system for simultaneous detection of pressure conditions in the abdominal cavity, the intestines, and the circulatory system. The same pressure sensor was used with different measurement ranges. In this paper, we describe the device and major experiences, advantages, and disadvantages. The sensory systems are capable of real-time, variable frequency sampling and data collection. It is also important to note that the pressure measurement system should be able to measure pressure with high sensitivity, independently of the filling medium (gas, liquid). The multichannel pressure measurement system we developed was well suited for abdominal compartment syndrome experiments and provided data for optimizing the method of negative pressure wound management. The system is also suitable for direct blood pressure measurement, making it appropriate for use in additional experimental surgical models.

Use of a portable negative pressure wound therapy device on a hard-to-heal wound with exposed bone: a case study

This case study examines the effectiveness of using negative pressure wound therapy (NPWT) in the management of a hard-to-heal (chronic) wound with exposed ankle bone to reduce associated wound exudate and promote production of granulation tissue. A 60-year-old male patient who was able to attend wound follow-up diligently twice weekly for eight weeks, and weekly thereafter, was selected from a private hospital to take part. During each dressing change, the wound was cleansed with superoxidised cleansing solution, and minimal sharp debridement was performed. In the authors' opinion, the NPWT device used in this study is light and convenient for use in the community or home care setting. The NPWT wound dressing was connected to the NPWT machine via a connecting tube and the device then switched on using the default setting of a negative pressure of 125mmHg. Following the application of the NPWT device, the exposed ankle bone was successfully covered with healthy granulation tissue and healed within 20 weeks with minimal exudate formation in the wound. In the authors' opinion, NPWT is able to promote progress to wound healing; to minimise unnecessary dressing changes and, based on feedback from the patient, is comfortable to wear and when in use.

Portable Negative Pressure Wound Dressing in Oncoplastic Conservative Surgery for Breast Cancer: A Valid Ally

Background and Objectives: The use of oncoplastic techniques has spread widely in the last decade, with an expansion of the indications and demonstration of excellent oncological safety profiles. A potential downside may be the increased complication rates, which could influence the timing of adjuvant therapy. To date, there is increasing evidence that negative pressure therapy on closed wounds can reduce complication rates after surgery. From this perspective, we tested the use of portable negative pressure wound dressings (NPWDs) in oncoplastic surgery to minimize early post-operative admissions to the outpatient clinic and prevent surgical complications. Materials and Methods: An observational prospective cohort study was conducted on a population of patients who underwent quadrantectomy and wise-pattern reduction mammoplasty for breast cancer. The primary objective of the study is represented by the evaluation of the impact of NPWD on post-operative outcomes in an oncoplastic surgery setting. Patients enrolled between January 2021 and January 2023 were divided into two groups, the conventional dressing (CD) group and the NPWD group, by a simple randomization list. Results: A total of 100 patients were enrolled, with 52 in the CD group and 48 in the NPWD group. The use of NPWD significantly reduced the wound dehiscence rate (2.0% vs. 7.7% p = 0.002) and the number of one-month postoperative admissions to our clinic (3.8 ± 1.1 vs. 5.7 ± 1.3 p = 0.0009). Although not significant, it is possible to note a trend of reduction of clinically relevant postoperative total complications in patients treated with NPWDs. Conclusions: NPWDs may represent a useful tool in the post-surgical management of complex oncoplastic procedures, ensuring less wound dehiscence. Furthermore, the use of these dressings led to a significant reduction in admissions to the clinic, promoting a lower use of resources by hospitals and effective prevention of possible complications.

Reduction in Seroma and Other Complications with a Novel Internal Negative Pressure System in Breast Reconstruction

Background

Seroma, along with other complications, occurs as a result of poor wound healing following breast reconstructive surgery. The Interi System was developed to address the need for more effective approaches to close internal dead space and evacuate postsurgical fluid. Interi is an internal negative pressure delivery system with a unique branching manifold for broad coverage of internal tissue planes. Initial experience in a small cohort undergoing prepectoral breast reconstruction showed a clinical and statistically significant reduction in seroma and any complication versus standard drains. The purpose of this study is to report on the safety and effectiveness of Interi, compared with standard drains, in a larger patient population followed up over a longer period than our initial study.

Methods

Data on demographics, mastectomy and reconstructive variables, postoperative complications, and manifold/drain duration were retrieved from patient records and compared between the two groups.

Results

Interi was used in 100 patients (170 breasts) and standard drains in 100 patients (166 breasts). Groups were well matched in demographic, reconstructive, and mastectomy variables. Interi was removed significantly earlier than drains (16.5 versus 19.6 days; P < 0.0001) and was associated with a significantly lower incidence of seroma (4.1% versus 22.9%, P < 0.00001), flap revision (10.6% versus 21.7%, P = 0.006), and any complication (23.5% versus 44.0%, P = 0.0001).

Conclusions

Interi effectively reduced dead space and evacuated fluid from internal tissue planes, thereby decreasing seroma and other complications after prepectoral breast reconstruction. As a viable alternative to standard drains, it could significantly improve patient outcomes.

The Application of Double-Layer-Vacuum-Assisted Closure Therapy With Flap Repair of Soft Tissue Defects Near the Eyes or EarDL-VAC Therapy

OBJECTIVE

We aimed to introduce and evaluate the safety of double-layer-vacuum-assisted closure (DL-VAC) therapy with flap repair of the wound near the eyes or ears.

METHODS

This study is case reports of 2 patients who underwent DL-VAC therapy for tissue defects near the eyes or ears. The detailed process of the DL-VAC therapy is carefully described in this study. The postoperative wound healing process was closely observed. The biggest concern was the treatment outcome of DL-VAC therapy on the eyes and ears.

RESULTS

Two patients underwent DL-VAC therapy due to their soft tissue defects close to the eyes or ears. Both patients achieved primary wound healing and the flaps survived during the follow-up period, which ranged from 1 to 24 months. Patients did not receive any dressing change until the VAC device was removed on the 5th to 7th postoperative day. No severe complications appeared and the patients were satisfied with both appearance and function.

CONCLUSIONS

Double-layer-vacuum-assisted closure therapy is an effective and safe option for the treatment of wounds near the eyes and ears.

What’s old is new again: Insights into diabetic foot microbiome

Diabetes is a chronic disease that is considered one of the most stubborn global health problems that continues to defy the efforts of scientists and physicians. The prevalence of diabetes in the global population continues to grow to alarming levels year after year, causing an increase in the incidence of diabetes complications and health care costs all over the world. One major complication of diabetes is the high susceptibility to infections especially in the lower limbs due to the immunocompromised state of diabetic patients, which is considered a definitive factor in all cases. Diabetic foot infections continue to be one of the most common infections in diabetic patients that are associated with a high risk of serious complications such as bone infection, limb amputations, and life-threatening systemic infections. In this review, we discussed the circumstances associated with the high risk of infection in diabetic patients as well as some of the most commonly isolated pathogens from diabetic foot infections and the related virulence behavior. In addition, we shed light on the different treatment strategies that aim at eradicating the infection.

Severe local wound infections after vascular exposure in the groin and other body areas: Prevention, treatment and prognosis

Severe surgical site infections (SSIs) are a frequent nosocomial complication after vascular interventions, an important cause of postoperative morbidity, and a substantial burden to the health care system. Patients undergoing arterial interventions are at elevated risk of SSIs, possibly because of the presence of several risk factors in this patient population. In this review, we examined the available clinical evidence for the prevention, treatment, and prognostication of postoperative severe SSIs after vascular exposure in the groin and other body areas. Results from studies evaluating preoperative, intraoperative, and postoperative preventive strategies and several treatment options are reviewed. In addition, risk factors for surgical wound infections are analyzed in detail and related evidence from the literature is highlighted. Although several measures have been implemented over the time to prevent them, SSIs continue to pose a substantial health care and socioeconomic challenge. Therefore, strategies to decrease the risk and improve the treatment of SSIs for the high-risk vascular patient population should be the focus of continuing improvement and critical review. This review aimed at identifying and reviewing the current evidence for preventing, treating, and performing stratification according to the prognosis of postoperative severe SSIs after vascular exposure in the groin and other body areas.

Single-Use Negative Pressure Wound Therapy Applied on Various Wound Types: An Interventional Case Series

PURPOSE

The purpose of this study was to determine whether a single-use negative pressure wound therapy (NPWT) system achieves individualized goals of therapy when used to treat patients with a variety of wound types.

DESIGN

Multiple case series.

SUBJECTS AND SETTING

The same comprised 25 participants; their mean age was 51.2 years (SD: 18.2; range: 19-79 years); 14 were male (56%) and 11 were female (44%). Seven study participants withdrew from study participation. Wound etiologies vary; 4 had diabetic foot ulcers; 1 had a full-thickness pressure injury; 7 were treated for management of an abscess or cyst; 4 had necrotizing fasciitis, 5 had nonhealing postsurgical wounds, and 4 had wounds of other etiologies. Data were collected at 2 ambulatory wound care clinics located in the Southeastern United States (Augusta and Austell, Georgia).

METHODS

A single-outcome measure was selected for each participant by his or her attending physician at a baseline visit. Selected end points were (1) decrease in wound volume, (2) decrease in size of the tunneling area, (3) decrease in size of the undermining, (4) decrease in the amount of slough, (5) increase in granulation tissue formation, (6) decrease in periwound swelling, and (7) wound bed progression toward transition to another treatment modality (such as standard dressing, surgical closure, flap, or graft). Progress toward the individualized goal was monitored until the goal was achieved (study end point) or a maximum of 4 weeks following initiation of treatment.

RESULTS

The most common primary treatment goal was to achieve a decrease in wound volume (22 of 25 study participants), and the goal to increase granulation tissue was chosen for the remaining 3 study participants. A majority of participants (18 of 23, 78.3%) reached their individualized treatment outcome. The remaining 5 participants (21.7%) were withdrawn during the study (for reasons not related to the therapy). The median (interquartile range [IQR]) duration of NPWT therapy was 19 days (IQR: 14-21 days). Between baseline and the final assessment, median reductions in wound area and volume were 42.7% (IQR: 25.7-71.5) and 87.5% (IQR: 30.7-94.6).

CONCLUSIONS

The single-use NPWT system achieved multiple individualized treatment objectives in a variety of wound types. Individually selected goals of therapy were met by all study participants who completed the study.

Management of wounds with exposed bone structures using an induced-membrane followed by polymethyl methacrylate and second-stage skin grafting in the elderly with a 3-year follow-up

The treatment of traumatic wounds with exposed bone or tendons is often challenging. An induced membrane (IM) is used to reconstruct bone defects, as it provides an effective and sufficient blood supply for bone and soft-tissue reconstruction. This study explored a novel two-stage strategy for wound management, consisting of initial wound coverage with polymethyl methacrylate (PMMA) and an autologous split-thickness skin graft under the IM. Fifty inpatients were enrolled from December 2016 to December 2019. Each patient underwent reconstruction according to a two-stage process. In the first stage, the defect area was thoroughly debrided, and the freshly treated wound was then covered using PMMA cement. After 4-6 weeks, during the second stage, the PMMA cement was removed to reveal an IM covering the exposed bone and tendon. An autologous split-thickness skin graft was then performed. Haematoxylin and eosin (H&E) staining and immunohistochemical analysis of vascular endothelial growth factor (VEGF), CD31 and CD34 were used to evaluate the IM and compare it with the normal periosteal membrane (PM). The psychological status and the Lower Extremity Function Scale (LEFS) as well as any complications were recorded at follow-up. We found that all skin grafts survived and evidenced no necrosis or infection. H&E staining revealed vascularised tissue in the IM, and immunohistochemistry showed a larger number of VEGF-, CD31- and CD34-positive cells in the IM than in the normal PM. The duration of healing in the group was 5.40 ± 1.32 months with a mean number of debridement procedures of 1.92 ± 0.60. There were two patients with reulceration in the group. The self-rating anxiety scale scores ranged from 35 to 60 (mean 48.02 ± 8.12). Postoperatively, the LEFS score was 50.10 ± 9.77. Finally, our strategy for the management of a non-healing wound in the lower extremities, consisting of an IM in combination with skin grafting, was effective, especially in cases in which bony structures were exposed in the elderly. The morbidity rate was low.

Prophylactic negative pressure wound therapy is not effective for preventing driveline infection following left ventricular assist device implantation

BACKGROUND

Driveline infection (DLI) following left ventricular assist device (LVAD) implantation remains an unresolved problem. Negative pressure wound therapy (NPWT) promotes wound healing by applying negative pressure on the surface of the wound. Recently, the prophylactic application of NPWT to closed surgical incisions has decreased surgical site infections in various postsurgical settings. Therefore, we evaluated the efficacy and safety of prophylactic NPWT for preventing DLI in patients with LVAD implantation.

METHODS

Prophylactic NPWT was provided to 50 patients who received continuous-flow LVADs as bridge-to-transplant therapy at our institution between May 2018 and October 2020 (NPWT group). The negative pressure dressing was applied immediately after surgery and retained on the driveline exit site for 7 days with a continuous application of -125 mm Hg negative pressure. The primary outcome was DLI within 1 year of LVAD implantation. We compared the rate of DLI incidence in the NPWT group with that in the historical control cohort (50 patients) treated with the standard dressing (SD) who received LVAD implantation between July 2015 and April 2018 (SD group).

RESULTS

No severe complications were associated with the NPWT. During the follow-up period, DLI was diagnosed in 16 participants (32%) in the NPWT group and 21 participants (42%) in the SD group. The rates of DLI incidence and freedom from DLI did not differ between groups (p = 0.30 and p = 0.63).

CONCLUSIONS

Prophylactic NPWT at the driveline exit site was safe following LVAD implantation. However, it did not significantly reduce the risk of DLI.

Use of closed incision negative pressure wound therapy on C-section wounds in obese women

Rates of obesity in pregnant women are increasing. Obesity is linked to increased patient risk of developing postoperative wound complications such as surgical site infection, wound dehiscence and haematoma formation. Closed incision negative pressure wound therapy (ciNPWT) has been introduced as a prophylactic intervention to reduce caesarian section (C-section) wound complications. Evidence from randomised controlled trials and retrospective studies has shown variable rates of success in reducing risk of SSI. The studies reviewed in this article found that ciNPWT had no statistically significant impact in reducing rates of wound dehiscence and haematoma formation or increasing long-term satisfaction with the appearance of scar tissue following C-section. Further research into the use of cINPWT to prevent surgical site infection is needed to determine the effectiveness of this therapy in reducing this wound complication.

Nurses' Readiness to Undertake Controlled Negative Pressure Therapy in the Treatment of Chronic Wounds-Research Report

Local wound treatment with negative pressure wound therapy (NPWT) shortens the healing process but requires the supervision of trained medical personnel for administering the therapeutic procedures. Professional supervision and control of the effectiveness of NPWT, as well as education conducted by nurses, are of particular importance for therapeutic and caring processes, both in hospital and at home. The aim of the study was the assessment of the perception of NPWT by certified nurses in the topical treatment of chronic wounds. The study was conducted using the method of estimation and a diagnostic survey with the proprietary NPWT perception questionnaire: 495 subjects were enrolled in the study and 401 respondents aged 25-67 years qualified for statistical analysis. Despite their experience and competence, the respondents critically assessed their knowledge, pointing to an average subjective level of knowledge related to wound treatment and a low level of knowledge related to NPWT. Most of the respondents had no experience of independent treatment using this method. The data obtained from the questionnaire clearly indicate theoretical preparation and high motivation to undertake activities related to the implementation of NPWT in their own practice. Low readiness values suggested that the subjects did not have the resources or the ability to implement the method. The perception of NPWT in the surveyed group of nurses was determined by numerous factors, including self-assessment of their own knowledge, motivation and readiness to use NPWT. A high level of NPWT perception was noted, despite low motivation related to the availability and knowledge of the method. Theoretical knowledge is insufficient to implement innovative methods in local wound treatment. Practical skills and motivation are indispensable elements that should be met during the training and education of nurses in the field of wound care.

[Treatment of chronic wounds]

The treatment of chronic wounds often poses a therapeutic challenge. Assessment of the pathogenesis of the wound, causative and symptomatic interventions are key. Concerning treatment-concepts the evaluation of comorbidities, pain management, the nutrition status of as well as the mobility of the patient are recommended.

Characteristics of Fournier gangrene and evaluation of the effects of negative-pressure wound therapy

Fournier gangrene (FG) is a life-threatening disease affecting the soft tissues of the genital, perineal, and perianal regions. This retrospective study aimed to summarize the characteristics of FG and evaluate the effects of negative-pressure wound therapy (NPWT). We analyzed clinical data of 36 patients with FG admitted to our department. Thirty-four cases had perianal and external genital infections, and the other two had secondary infection of the urinary fistula after trauma and retroperitoneal abscess, respectively. Monomicrobial, polymicrobial, culture-negative, and fungal infections were identified in 16, 17, 2, and 1 cases, respectively. Escherichia coli, Enterococcus faecalis, Enterococcus faecium, Klebsiella pneumoniae, and Staphylococcus haemolyticus were the most common pathogens. The mortality rate was 8%. Twenty-seven and nine patients were treated with NPWT (group A) and conventional dressing (group B), respectively. The length of stay was 38.0 ± 16.1 and 51.0 ± 17.3 days, number of operations were 3 (3,6) and 13 (4,17), and wound healing times were 39.2 ± 18.1 and 66.5 ± 17.1 days in groups A and B, respectively. Taken together, clinicians should always consider the possibility of perianal or external genital infections progressing to FG in the daily work, especially for patients with diabetes mellitus. Enterobacteriaceae, Enterococcus, and Staphylococcus haemolyticus are the most common causative pathogens, and NPWT is an effective adjuvant therapy for wound management with fewer operations and a shorter wound healing time.

Effects of negative pressure wound therapy with instillation and dwell time (NPWTi-d) versus NPWT or standard of care in orthoplastic surgery: A systematic review and meta-analysis

Negative pressure wound therapy (NPWT) is a wound-dressing system that applies sub-atmospheric pressure on the surface of a wound to promote healing. An evolution of this technology, NPWT with solution instillation and dwell time (NPWTi-d), is increasingly being used to maximise wound closure and reduce failure rates. However, there is still a lack of evidence concerning its use in orthoplastic surgery. Therefore, the aim of this study is to compare NPWTi-d with NPWT and standard of care for wound management in orthoplastic surgery. A comprehensive literature search using PubMed, Web of Science, and Cochrane databases up to 15 March 2022 was performed, including studies describing the outcomes of NPWTi-d for traumatic/orthopaedic injuries. A meta-analysis on the number of surgical debridements, as well as the rate of complete wound closure and complications was carried out, although for other outcomes, a descriptive statistic was applied. Risk of bias and quality of evidence were assessed using the Downs& Black's Checklist for Measuring Quality. Thirteen studies with a total number of 871 patients were included, in which NPWTi-d demonstrated significantly higher primary wound closure and lower complication rates (P < .05). No difference in the number of surgical procedures required for final wound healing was observed. Moreover, five out of six studies showed better results for NPWTi-d when the change of the bioburden and bacterial count of the wound were analysed. A singular study investigating the length of the hospital stay of patients treated with NPWTi-d showed a reduction in the latter. The present meta-analysis proves that NPWTi-d is superior to NPTW or conventional dressings in orthoplastic wound care management, in terms of complete wound closure rate and the reduced number of complications. Still, the limited quality of the studies analysed shows that future randomised studies are needed to confirm the benefits and to identify the most appropriate recommendations for using NPWTi-d in orthoplastic surgery, as well as to investigate the cost-effectiveness of this wound-dressing system.

Is There a Wound Recontamination by Eluates with High Bacterial Load in Negative-Pressure Wound Therapy with Instillation and Dwell Time?

BACKGROUND

This study investigated bacterial colonization of the foam eluate after negative-pressure wound therapy (NPWT) with instillation and dwell time (NPWTi-d) to obtain an indication of possible recontamination of the wound during NPWTi-d. To detect bacterial colonization and the extent of planktonic and nonplanktonic bioburden as comprehensively as possible, routine culture and molecular biology methods were used.

METHODS

Before (time point 1) and after (median 3.0 days; time point 2) NPWT ( n = 15) and NPWTi-d with antiseptic installation ( n = 15), wound bed [22 acute, eight chronic wounds; median age, 51 years (range, 24 to 91); 26 men], foam, and eluate were examined by routine culture methods and fluorescence in situ hybridization (FISH), polymerase chain reaction, and FISH sequencing (FISHseq).

RESULTS

At time point 2, 94.9% (37 of 39) of the pathogens identifiable in the eluate were also detected in the wound bed. Foam and eluate were always bacterially contaminated. NPWTi-d resulted in a significant reduction in the number of pathogen species compared with NPWT (NPWTi-d, time point 1 versus time point 2: P = 0.026; NPWT, time point 1 versus time point 2: not significant). Routine culture of wound bed samples at time point 2 identified only 28 of 52 (53.8%) of the pathogens, whereas examination of wound bed, foam, and eluate and additional FISHseq use detected 50 of 52 (96.2%) of the bacterial species. FISHseq identified biofilm in one and microcolonies in 10 wounds (time point 2).

CONCLUSIONS

The bacterial load of the foam is flushed back into the wound during NPWTi-d. FISHseq should be used in addition to the routine culture method when pathogen identification and detection of nonplanktonic bacterial growth is particularly important for the patient's therapy.

CLINICAL QUESTION/LEVEL OF EVIDENCE

Therapeutic, V.

Effectiveness of negative pressure wound therapy on chronic wound healing: A systematic review and meta-analysis

BACKGROUND

Negative Pressure Wound Therapy (NPWT) is considered an effective treatment in facilitating the healing of chronic wounds. However, its effect remains inconsistent, which allows for further investigation.

OBJECTIVE

This study aimed to assess the effectiveness of the NPWT program in improving the management of chronic wound healing.

DESIGN

Systematic review and meta-analysis was used.

DATA SOURCES

The search strategy ranged from 2016 to 2021 in PubMed, CINAHL, ProQuest, and ScienceDirect.

REVIEW METHODS

Risk of bias was done based on the Risk of Bias 2.0 guideline using RevMan 5.4.1, and meta-analysis was done using Jeffreys's Amazing Statistics Program (JASP) software version 0.16.3. Critical appraisal of the included articles was done according to Joanna Briggs Institute's (JBI) appraisal checklist.

RESULTS

A total of 15 articles were included, with 3,599 patients with chronic wounds. There was no publication bias in this study seen from the results of the Egger's test value of 0.447 (p >0.05), symmetrical funnel plot, and fail-safe N of 137. However, heterogeneity among studies was present, with I2 value of 66.7%, Q = 41.663 (p <0.001); thus, Random Effect (RE) model was used. The RE model showed a significant positive effect of the NPWT on chronic wound healing, with z = 3.014, p = 0.003, 95% CI 0.085 to 0.400. The observed effects include decreased rate of surgical site infection, controlled inflammation, edema, and exudate, as well as increased tissue with varying forest plot size, as demonstrated by the small effect size (ES = 0.24, 95% CI -0.26 to 0.79, p <0.05).

CONCLUSION

The analysis results show that the standard low pressure of 80-125 mmHg could improve microcirculation and accelerate the healing process of chronic wounds. Therefore, applying the NPWT program could be an alternative to nursing interventions. However, it should be carried out by competent wound nurses who carry out procedure steps, implement general patient care, and give tips on overcoming device problems and evaluation.

PROSPERO REGISTRATION NUMBER

CRD42022348457.

Ambulatory negative pressure wound therapy of subcutaneous abdominal wounds after surgery: results of the SAWHI randomized clinical trial

BACKGROUND

The SAWHI study showed that negative pressure wound therapy (NPWT) reduced treatment time by 7.8 days and had a 20.2% higher wound closure rate, but required a 2.1-day longer hospital stay than conventional wound treatment (CWT). The majority of study participants began treatment in the hospital and were discharged within 42 days.

METHODS

As an add-on to a multicenter randomized clinical trial, selected aspects of hospital discharge, outpatient treatment continuation, and subsequent wound closure outcomes are compared between the treatment arms in patients with subcutaneous abdominal wound healing impairment after surgery without fascia dehiscence in the per protocol population.

RESULTS

Within 42 days, wound closure rates were higher for outpatients in the NPWT arm than for outpatients in the CWT arm (27 of 55 [49.1%]) for both outpatient continuation of NPWT (8 of 26 [30.8%]) and outpatient CWT after NPWT was finished (27 of 121 [22.3%]). Time to wound closure was shorter for outpatients in the NPWT arm (outpatient transfer with: NPWT Mean ± standard error 28.8 ± 8.0 days; CWT 28.9 ± 9.5 days) than in the conventional treatment arm (30.4 ± 8.0 days). Nevertheless, within 30 study sites with patient enrollment, outpatient NPWT was performed in only 20 study sites for 65 of 157 study participants in the treatment arm.

CONCLUSIONS

Outpatient NPWT of postsurgical abdominal wounds with healing impairment is feasible and successful and should be encouraged whenever possible. Study site specific avoidance of outpatient NPWT emerges as an additional reason for the prolonged hospitalization time. Trial Registration ClinicalTrials.gov Identifier NCT01528033. Date of registration: February 7, 2012, retrospectively registered.