Hyperbaric oxygen (HBO) therapy
HBO therapy has been advocated by some physicians based upon its beneficial effects on cutaneous wound healing, but there is a lack of prospective controlled studies to demonstrate its efficacy.[1]Pasternack MS, Swartz MN. Cellulitis, necrotizing fasciitis, and subcutaneous tissue infections. In: Bennett JE, Dolin R, Blaser MJ, eds. Mandell, Douglas, and Bennett’s principles and practice of infectious diseases. Philadelphia, PA: Elsevier; 2015:1194-215.[74]Vilar DG, Fadrique GG, Martín IJ, et al. Hypebaric oxygen treatment in urology. Arch Esp Urol. 2011 Jul;64(6):507-16.
http://www.ncbi.nlm.nih.gov/pubmed/21791717?tool=bestpractice.com
HBO therapy is not recommended in England for necrotising fasciitis.[1]Pasternack MS, Swartz MN. Cellulitis, necrotizing fasciitis, and subcutaneous tissue infections. In: Bennett JE, Dolin R, Blaser MJ, eds. Mandell, Douglas, and Bennett’s principles and practice of infectious diseases. Philadelphia, PA: Elsevier; 2015:1194-215.[74]Vilar DG, Fadrique GG, Martín IJ, et al. Hypebaric oxygen treatment in urology. Arch Esp Urol. 2011 Jul;64(6):507-16.
http://www.ncbi.nlm.nih.gov/pubmed/21791717?tool=bestpractice.com
[75]NHS England. Clinical commissioning policy: hyperbaric oxygen therapy for necrotising soft tissue infections (all ages). July 2018 [internet publication].
https://www.england.nhs.uk/wp-content/uploads/2018/07/hbot-for-necrotising-soft-tissue-infections-v2.pdf
It may be readily available and recommended for this indication in other regions; HBO therapy must never delay surgical debridement or appropriate antibiotic treatment.
Newer antibiotics
Antibiotics with activity against gram-positive organisms (including MRSA), such as the second-generation glycopeptide antibiotic oritavancin and the fluoroquinolone delafloxacin, may be considered for inclusion in an antimicrobial regimen for necrotising fasciitis, where available.[76]Menichetti F, Giuliano S, Fortunato S. Are there any reasons to change our behavior in necrotizing fasciitis with the advent of new antibiotics? Curr Opin Infect Dis. 2017 Apr;30(2):172-9.
http://www.ncbi.nlm.nih.gov/pubmed/28134677?tool=bestpractice.com
[77]Abrahamian FM, Sakoulas G, Tzanis E, et al. Omadacycline for acute bacterial skin and skin structure infections. Clin Infect Dis. 2019 Aug 1;69(suppl 1):S23-S32.
https://www.doi.org/10.1093/cid/ciz396
http://www.ncbi.nlm.nih.gov/pubmed/31367742?tool=bestpractice.com
[78]Lee YR, Burton CE, Bevel KR. Delafloxacin for the treatment of acute bacterial skin and skin structure infections. J Pharm Technol. 2019 Jun;35(3):110-8.
http://www.ncbi.nlm.nih.gov/pubmed/34861007?tool=bestpractice.com
However, clinical data supporting their use are limited, the efficacy of these agents has not been rigorously demonstrated in necrotising fasciitis, and there are significant adverse effects associated with each of these agents. With the exception of use in uncommon and specific antibiotic resistance patterns in an isolated causative organism, there is thus far no compelling evidence to recommend their use in necrotising fasciitis.
Reltecimod
Reltecimod is an immune-modulating peptide derived from the T-cell receptor CD28, which targets the co-stimulatory pathway that induces pro-inflammatory cytokines. It has been shown to be of benefit in bacterial infections including necrotising fasciitis.[4]Sartelli M, Coccolini F, Kluger Y, et al. WSES/GAIS/WSIS/SIS-E/AAST global clinical pathways for patients with skin and soft tissue infections. World J Emerg Surg. 2022 Jan 15;17(1):3.
https://www.doi.org/10.1186/s13017-022-00406-2
http://www.ncbi.nlm.nih.gov/pubmed/35033131?tool=bestpractice.com
In one study in necrotising fasciitis, reltecimod was associated with faster resolution of organ dysfunction and hospital discharge; however, further studies are needed.[4]Sartelli M, Coccolini F, Kluger Y, et al. WSES/GAIS/WSIS/SIS-E/AAST global clinical pathways for patients with skin and soft tissue infections. World J Emerg Surg. 2022 Jan 15;17(1):3.
https://www.doi.org/10.1186/s13017-022-00406-2
http://www.ncbi.nlm.nih.gov/pubmed/35033131?tool=bestpractice.com
It is not currently licensed or available in the UK.