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  • Title: Continuous negative-pressure wound therapy improves the survival rate of skin grafts and shortens the time required for skin graft survival.
    Author: Tsuchiya M, Kushibiki T, Yamashiro T, Mayumi Y, Ishihara M, Azuma R.
    Journal: Skin Res Technol; 2024 Jul; 30(7):e13865. PubMed ID: 39031918.
    Abstract:
    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.
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