53 Use of Polylactic-acid-membrane in Split-thickness Skin Graft Donor Sites: A Prospective, Comparative, Randomized Study

Abstract

IntroductionPolyurethane film (PU) dressings are commonly applied for coverage of split-thickness skin graft (SSG) donor sites, while previous studies have suggested reduced morbidity using a polylactic acid membrane (PLM). To further investigate the optimal treatment approach, the presented study compared outcome of donor sites in patients receiving either PLM or PU.MethodsThis randomized clinical trial allocated patients requiring SSG to receive either PLM or PU at the donor-site. Primary endpoint was difference in donor site scar appearance between groups 3 months postoperatively (Vancouver Scar Scale – VSS). Secondary endpoints included pain, the number of and time required for wound dressing changes, and costs related to the wound dressing.Results30 patients were allocated to each group. The median VSS scored lower for patients receiving PLM (PU: 3 (Q1: 2; Q3: 4) vs. PLM: 2 (Q1: 1; Q3: 3); p=0.049). Pain during change of wound dressing (PU: 2.0 ± 0.2 vs. PLM: 0.5 ± 0.2; p< 0.001) and mobilization (PU: 0.8 ± 0.2 vs. PLM: 0.3 ± 0.1; p=0.032) was reduced in the PLM group. Patients with PLM required less dressing changes per day of hospital stay (PU: 0.44 ± 0.06 vs. PLM: 0.28 ± 0.02; p=0.015). Mean time for wound dressing changes per patient was higher in the PU group (PU: 74.50 ± 5.72 vs. PLM: 21.43 ± 2.61 min; p< 0.001). Costs were higher in the PLM group (PU: 67.83 ± 5.56 vs. PLM: 162.79 ± 21.76 €; p< 0.001).ConclusionsPLM improves outcome of SSG donor sites, however, higher treatment costs must be taken into consideration.