Regulated negative pressure-assisted wound therapy (RNPT) applies non-pharmaceutical technology for enhanced healing of hard to cure, acute and chronic wounds. Although used for over two decades, wound pO 2 levels, an essential physical parameter inherent in RNPT that follows Henry’s Law of gases, have not been reported. Necrotizing fasciitis (NF), a severe soft tissue infection, necessitates prompt intensive therapeutic response using pharmaceutical, surgical, and hyperbaric oxygen treatment when anaerobes are involved. We report a linear decrease in pO 2 values in direct correlation with sub-atmospheric pressure and concurrent changes in wound atmospheric pO 2 by supplemented oxygen in an in vitro phantom leg simulated wound model treated with RNPT. We designed a system using regulated oxygen-enriched negative pressure therapy (RO-NPT) for controlling wound atmospheric pO 2. A representative patient case report treated for NF with RO-NPT is presented. RNPT follows Henry’s law of gases and leads to a decrease in wound atmospheric pO 2 . The application of RNPT in anaerobic wound infections should be contraindicated. Wound pO 2 is enhanced by simultaneous application of oxygen by RO-NPT. We have demonstrated the rationale for the possible use of RO-NPT for prevention of anaerobic wound infections and as a supplemental mode of treatment of NF.
European Journal of Plastic Surgery – Springer Journals
Published: Oct 1, 2011
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