Bilayer wound matrix dermal substitute allows survival of split-thickness skin graft in necrotizing fasciitis defects: A retrospective, uncontrolled case study.

BACKGROUND

Necrotizing fasciitis (NF) is a rapid infectious process involving the fascia and subcutaneous tissue. Current standards of care rely on surgical debridement, resulting in large defects, with limited reconstructive options. Wound management has evolved over the last decade, including use of bilayer wound matrices (BWM). The authors sought to assess the use of collagen-GAG bilayer wound matrices on STSG take for NF wounds.

METHODS

A qualitative clinical evaluation (2016-2018) was performed to analyze the efficacy of BWM to aide in STSG take. Primary outcomes were 180-day bilayer matrix success, defined by progressing to split-thickness skin graft (STSG) and STSG take, determined by clinical evaluation. Wounds without a diagnosis of NF or reconstruction with BWM were excluded.

RESULTS

Ten patients with 11 NF wounds were identified. Average BMI was 32 kg/m2. Comorbidities included hypertension (70%), diabetes (40%), and peripheral vascular disease (40%). Average wound size was 542cm2 (range: 49cm2 -1050cm2) and average wound age was 19 days at BWM placement. Matrices were applied to the lower extremity (64%), upper extremity (27%), and perineum (9%). One-hundred percent (n = 11) of wounds were deemed successful by receiving a STSG. Average time to STSG was 44 days (21d -108d). Complications consisted of delayed healing (n = 1, 8%) and partial necrosis (n = 1). No instances of infection or STSG graft loss occurred.

CONCLUSION

Complex defects caused by soft tissue necrotizing infections remain a reconstructive challenge. We highlight the benefit of a BWM as a treatment modality for reconstruction by priming the wound bed for a definitive STSG.