Topical Oxygen Therapy for Diabetic Foot Ulcers

Introduction to Topical Oxygen Therapy

The American Diabetes Association strongly supports topical oxygen therapy, citing several high-quality RCTs and systematic reviews that demonstrate its efficacy in healing chronic diabetic foot ulcers at 12 weeks, with a moderate overall quality of evidence 2, 3
Topical oxygen therapy is a conditionally recommended adjunctive treatment for diabetic foot ulcers that have failed standard care, supported by multiple high-quality randomized controlled trials showing improved healing rates at 12 weeks with minimal adverse events, as recommended by the International Working Group of the Diabetic Foot 1, 2, 3

The International Working Group of the Diabetic Foot conditionally recommends topical oxygen therapy after standard care failure, based on several high-quality RCTs and at least five systematic reviews published between 2020-2023, with a strength of evidence considered moderate 1, 4, 5, 6
A systematic review and meta-analysis demonstrated statistical significance with a risk ratio of 1.59 (95% CI: 1.07-2.37; p = 0.021) for complete wound healing, although the overall quality of evidence was considered moderate 2, 3

The American College of Cardiology is not directly involved in these guidelines, however, the International Working Group of the Diabetic Foot recommends using topical oxygen therapy only for Wagner 1 and 2 diabetic foot ulcers in the absence of infection and ischemia, with a strength of evidence considered low 1, 4, 5, 6
Topical oxygen therapy is contraindicated for infected wounds, dry necrotic wounds, post-surgical wounds, and wounds with active ischemia requiring revascularization, as stated by the International Working Group of the Diabetic Foot and the American Diabetes Association 10, 11, 7

The International Working Group of the Diabetic Foot recommends implementing aggressive standard care with sharp debridement, appropriate off-loading, moisture-retentive dressings, and vascular assessment for the first 2 weeks, before considering topical oxygen therapy if the ulcer shows insufficient reduction in area 1, 6, 7
Topical oxygen therapy should be considered if resources exist and the wound is non-infected, Wagner 1-2, without critical ischemia, and standard care has failed, as recommended by the International Working Group of the Diabetic Foot and the American Diabetes Association 1, 4, 2, 3
Standard care, including debridement, off-loading, and basic wound care, must continue alongside topical oxygen therapy, with reassessment at 12 weeks for healing outcomes, as stated by the International Working Group of the Diabetic Foot and the American Diabetes Association 1, 2, 3