Pieter R Zwanenburg1, Berend T Tol1, Miryam C Obdeijn2, Oren Lapid2, Sarah L Gans1, Marja A Boermeester1. 1. Department of Surgery, Amsterdam Gastroenterology and Metabolism, Amsterdam Infection & Immunity, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands. 2. Department of Plastic, Reconstructive & Hand Surgery, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands.
Abstract
OBJECTIVE: The aim of this study was to evaluate the efficacy of iNPWT for the prevention of postoperative wound complications such as SSI. SUMMARY OF BACKGROUND DATA: The 2016 WHO recommendation on the use of iNPWT for the prevention of SSI is based on low-level evidence, and many trials have been published since. Preclinical evidence suggests that iNPWT may also prevent wound dehiscence, skin necrosis, seroma, and hematoma. METHODS: PubMed, EMBASE, CINAHL, and CENTRAL were searched for randomized and nonrandomized studies that compared iNPWT with control dressings. The evidence was assessed using the Cochrane Risk of Bias Tool, the Newcastle-Ottawa scale, and GRADE. Meta-analyses were performed using random-effects models. RESULTS: High level evidence indicated that iNPWT reduced SSI [28 RCTs, n = 4398, relative risk (RR) 0.61, 95% confidence interval [CI]: 0.49-0.76, P < 0.0001, I = 27%] with a number needed to treat of 19. Low level evidence indicated that iNPWT reduced wound dehiscence (16 RCTs, n = 3058, RR 0.78, 95% CI: 0.64-0.94). Very low-level evidence indicated that iNPWT also reduced skin necrosis (RR 0.49, 95% CI: 0.33-0.74), seroma (RR 0.43, 95% CI: 0.32-0.59), and length of stay (pooled mean difference -2.01, 95% CI: -2.99 to 1.14). CONCLUSIONS: High-level evidence indicates that incisional iNPWT reduces the risk of SSI with limited heterogeneity. Low to very low-level evidence indicates that iNPWT also reduces the risk of wound dehiscence, skin necrosis, and seroma.
OBJECTIVE: The aim of this study was to evaluate the efficacy of iNPWT for the prevention of postoperative wound complications such as SSI. SUMMARY OF BACKGROUND DATA: The 2016 WHO recommendation on the use of iNPWT for the prevention of SSI is based on low-level evidence, and many trials have been published since. Preclinical evidence suggests that iNPWT may also prevent wound dehiscence, skin necrosis, seroma, and hematoma. METHODS: PubMed, EMBASE, CINAHL, and CENTRAL were searched for randomized and nonrandomized studies that compared iNPWT with control dressings. The evidence was assessed using the Cochrane Risk of Bias Tool, the Newcastle-Ottawa scale, and GRADE. Meta-analyses were performed using random-effects models. RESULTS: High level evidence indicated that iNPWT reduced SSI [28 RCTs, n = 4398, relative risk (RR) 0.61, 95% confidence interval [CI]: 0.49-0.76, P < 0.0001, I = 27%] with a number needed to treat of 19. Low level evidence indicated that iNPWT reduced wound dehiscence (16 RCTs, n = 3058, RR 0.78, 95% CI: 0.64-0.94). Very low-level evidence indicated that iNPWT also reduced skin necrosis (RR 0.49, 95% CI: 0.33-0.74), seroma (RR 0.43, 95% CI: 0.32-0.59), and length of stay (pooled mean difference -2.01, 95% CI: -2.99 to 1.14). CONCLUSIONS: High-level evidence indicates that incisional iNPWT reduces the risk of SSI with limited heterogeneity. Low to very low-level evidence indicates that iNPWT also reduces the risk of wound dehiscence, skin necrosis, and seroma.
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