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      Clinical recommendations and practical guide for negative pressure wound therapy with instillation

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          Abstract

          Effective wound management involves a comprehensive assessment of the patient and the wound to determine an optimal wound treatment plan. It is critical to identify and address factors that may impair wound healing, prior to selecting the most appropriate therapy for each patient. Negative pressure wound therapy ( NPWT) is a well‐established advanced therapy that has been successful in adjunctive management of acute and chronic wounds. In recent years, the introduction of topical wound solution delivery in combination with NPWT has provided further benefits to wound healing. A commercially available system now offers automated, volumetric control of instilled topical wound solutions with a dwell time in combination with NPWT ( NPWTi‐d; V.A.C. VeraFlo™ Therapy, KCI, an Acelity company, San Antonio, TX). This NPWTi‐d system differs from other instillation systems in that a timed, predetermined volume of topical wound solution is intermittently delivered (versus continuously fed) and allowed to dwell in the wound bed (without NPWT), for a user‐selected period of time before NPWT is resumed. This added accuracy and process simplification of solution delivery in tandem with NPWT have prompted use of NPWTi‐d as first‐line therapy in a wider subset of complex wounds. However, considerably more research is required to validate efficacy of NPWTi‐d in various wound types. The purpose of this review is to provide a relevant overview of wound healing, describe current literature supporting the adjunctive use of NPWTi‐d, propose a clinical approach for appropriate application of NPWTi‐d and conclude with case studies demonstrating successful use of NPWTi‐d. Based on this review, we conclude that either a large case series examining effects of NPWTi‐d on different wound types or possibly a large prospective registry evaluating NPWTi‐d with real‐world topical wound solutions versus immediate debridement and closure would be valuable to the medical community in evaluating the efficacy of this promising therapy.

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          Most cited references61

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          Bacterial biofilms: a common cause of persistent infections.

          Bacteria that attach to surfaces aggregate in a hydrated polymeric matrix of their own synthesis to form biofilms. Formation of these sessile communities and their inherent resistance to antimicrobial agents are at the root of many persistent and chronic bacterial infections. Studies of biofilms have revealed differentiated, structured groups of cells with community properties. Recent advances in our understanding of the genetic and molecular basis of bacterial community behavior point to therapeutic targets that may provide a means for the control of biofilm infections.
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            Negative pressure wound therapy after partial diabetic foot amputation: a multicentre, randomised controlled trial.

            Diabetic foot wounds, particularly those secondary to amputation, are very complex and difficult to treat. We investigated whether negative pressure wound therapy (NPWT) improves the proportion and rate of wound healing after partial foot amputation in patients with diabetes. We enrolled 162 patients into a 16-week, 18-centre, randomised clinical trial in the USA. Inclusion criteria consisted of partial foot amputation wounds up to the transmetatarsal level and evidence of adequate perfusion. Patients who were randomly assigned to NPWT (n=77) received treatment with dressing changes every 48 h. Control patients (n=85) received standard moist wound care according to consensus guidelines. NPWT was delivered through the Vacuum Assisted Closure (VAC) Therapy System. Wounds were treated until healing or completion of the 112-day period of active treatment. Analysis was by intention to treat. This study has been registered with , number NCT00224796. More patients healed in the NPWT group than in the control group (43 [56%] vs 33 [39%], p=0.040). The rate of wound healing, based on the time to complete closure, was faster in the NPWT group than in controls (p=0.005). The rate of granulation tissue formation, based on the time to 76-100% formation in the wound bed, was faster in the NPWT group than in controls (p=0.002). The frequency and severity of adverse events (of which the most common was wound infection) were similar in both treatment groups. NPWT delivered by the VAC Therapy System seems to be a safe and effective treatment for complex diabetic foot wounds, and could lead to a higher proportion of healed wounds, faster healing rates, and potentially fewer re-amputations than standard care.
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              Comparison of negative pressure wound therapy using vacuum-assisted closure with advanced moist wound therapy in the treatment of diabetic foot ulcers: a multicenter randomized controlled trial.

              The purpose of this study was to evaluate safety and clinical efficacy of negative pressure wound therapy (NPWT) compared with advanced moist wound therapy (AMWT) to treat foot ulcers in diabetic patients. This multicenter randomized controlled trial enrolled 342 patients with a mean age of 58 years; 79% were male. Complete ulcer closure was defined as skin closure (100% reepithelization) without drainage or dressing requirements. Patients were randomly assigned to either NPWT (vacuum-assisted closure) or AMWT (predominately hydrogels and alginates) and received standard off-loading therapy as needed. The trial evaluated treatment until day 112 or ulcer closure by any means. Patients whose wounds achieved ulcer closure were followed at 3 and 9 months. Each study visit included closure assessment by wound examination and tracings. A greater proportion of foot ulcers achieved complete ulcer closure with NPWT (73 of 169, 43.2%) than with AMWT (48 of 166, 28.9%) within the 112-day active treatment phase (P = 0.007). The Kaplan-Meier median estimate for 100% ulcer closure was 96 days (95% CI 75.0-114.0) for NPWT and not determinable for AMWT (P = 0.001). NPWT patients experienced significantly (P = 0.035) fewer secondary amputations. The proportion of home care therapy days to total therapy days for NPWT was 9,471 of 10,579 (89.5%) and 12,210 of 12,810 (95.3%) for AMWT. In assessing safety, no significant difference between the groups was observed in treatment-related complications such as infection, cellulitis, and osteomyelitis at 6 months. NPWT appears to be as safe as and more efficacious than AMWT for the treatment of diabetic foot ulcers.
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                Author and article information

                Journal
                Int Wound J
                Int Wound J
                10.1111/(ISSN)1742-481X
                IWJ
                International Wound Journal
                Blackwell Publishing Ltd (Oxford, UK )
                1742-4801
                1742-481X
                23 May 2015
                April 2016
                : 13
                : 2 ( doiID: 10.1111/iwj.2016.13.issue-2 )
                : 159-174
                Affiliations
                [ 1 ] Department of Plastic Surgery Loma Linda University School of Medicine Loma Linda CA USA
                [ 2 ] PeaceHealth Medical Group Plastic Surgery Vancouver WA USA
                [ 3 ] Department of Vascular Surgery Mount Sinai St. Luke's Roosevelt Hospital New York NY USA
                [ 4 ] Wound Healing Unit Montpellier University Hospital Montpellier France
                Author notes
                [* ] Correspondence to

                S Gupta, MD

                Department of Plastic Surgery

                Loma Linda University School of Medicine

                11175 Campus Drive

                Coleman Pavilion 21226

                Loma Linda

                CA 92354

                USA

                E‐mail: sgupta@ 123456llu.edu

                Article
                IWJ12452
                10.1111/iwj.12452
                7949544
                26011379
                668a498e-5e92-479f-be6b-51aadf9f4e70
                © 2015 The Authors. International Wound Journal published by Medicalhelplines.com Inc and John Wiley & Sons Ltd.

                This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

                History
                : 24 December 2014
                : 25 March 2015
                : 29 March 2015
                Page count
                Pages: 16
                Categories
                Invited Review
                Invited Review
                Custom metadata
                2.0
                April 2016
                Converter:WILEY_ML3GV2_TO_JATSPMC version:5.9.9 mode:remove_FC converted:10.03.2021

                Emergency medicine & Trauma
                dwell time,instillation therapy,negative pressure wound therapy,npwti‐d,wound healing

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