Topical Wound Oxygen Therapy in the Treatment of Chronic Diabetic Foot Ulcers

Robert G Frykberg, Robert G Frykberg

Abstract

Oxygen is a critical component of many biological processes and is essential for wound healing. Chronic wounds are typically characterized as being hypoxic in that the partial pressure of oxygen (pO2) in the center of the wound is often below a critical threshold necessary to fully support those enzymatic processes necessary for tissue repair. Providing supplemental oxygen can effectively raise pO2 levels to better optimize functioning of these essential enzymes. While hyperbaric oxygen therapy has been well studied in this regard, comparative clinical studies have fallen short of providing clear evidence in support of this modality for healing chronic diabetic foot ulcers (DFU). Topical oxygen therapy (TOT) has been in clinical use for over 50 years with encouraging pre-clinical and clinical studies that have shown improved healing rates when compared to standard care. Nonetheless, TOT has heretofore been discounted as an unproven wound healing modality without theoretical or clinical evidence to support its use. This review shall provide a brief summary of the role of oxygen in wound healing and, specifically, discuss the different types of topical oxygen devices and associated studies that have convincingly shown their efficacy in healing chronic DFUs. The time has come for topical oxygen therapy to be embraced as a proven adjunctive modality in this regard.

Keywords: diabetic foot ulcers; oxygen; topical oxygen therapy; wound healing.

Conflict of interest statement

R.G.F. has received prior research funding and is a Consultant for AOTI, Ltd. (Galway, Ireland).

Figures

Figure 1
Figure 1
Types of topical oxygen devices.

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Source: PubMed

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