• D Evans and L Land.
• Health and Social Care Research Centre, University of Central England (UCE), Ravensbury House, Westbourne Road, Birmingham B15 3TN, UK.
• Br J Plast Surg. 2001 Apr 1; 54 (3): 238-42.

AbstractSome wounds take a long time to heal, fail to heal or recur, causing significant pain and discomfort to the patient and cost to the National Health Service. This review assesses the effectiveness of topical negative pressure (TNP) in treating chronic wounds. The Cochrane Wounds Group Specialised Trials Register was searched for randomised controlled trials (RCTs) that evaluated the effectiveness of TNP on chronic-wound healing. Eligibility for inclusion, data extraction and details of trial quality were conducted by two reviewers independently. A narrative synthesis of results was undertaken as only two small trials, with different outcome measures, fulfilled the selection criteria. Trial 1 considered any type of chronic wound, trial 2 considered diabetic foot ulcers. Both trials compared TNP with saline-gauze dressings. Trial 1 reported a statistically significant difference in the percentage change in wound volume after 6 weeks, in favour of TNP. Trial 2 reported a difference in the number of days to healing and a difference in the percentage change in wound surface area after 2 weeks, in favour of TNP. These two small trials provide weak evidence to suggest that TNP may be superior to saline-gauze dressings in terms of wound healing. However, due to the small sample sizes and the methodological limitations of the studies, these findings must be interpreted with extreme caution. The effects of TNP on cost, quality of life, pain and comfort were not reported. It was not possible to determine the optimum TNP regimen. Further high-quality RCTs that address these issues are required.Copyright 2001 The British Association of Plastic Surgeons.

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