Decrease in donor site erythema by application of hyperthermia

Area of Science:

• Dermatology
• Wound Healing
• Biomedical Engineering

Background:

• Split-thickness skin graft donor sites often exhibit persistent erythematous discoloration.
• Managing donor site appearance is crucial for patient satisfaction and aesthetic outcomes.
• Current methods for reducing erythema may have limitations or side effects.

Purpose of the Study:

• To investigate the efficacy of mild topical hyperthermia in reducing erythematous discoloration of split-thickness skin graft donor sites.
• To assess the impact of topical hyperthermia on blood flow in these donor sites.
• To evaluate the safety and patient-reported outcomes of this intervention.

Main Methods:

• Ten patients with split-thickness skin graft donor sites were treated with mild topical hyperthermia using disposable chemical pocket warmers for 8 hours daily over 8 weeks.
• Control areas received "used" warmers.
• Erythema was assessed subjectively (physicians, patients) and quantitatively (color analysis). Blood flow was measured using laser Doppler flowmetry.

Main Results:

• All subjects showed a noticeable reduction in erythema (redness) in the treated areas.
• A significant decrease in blood flow was observed in the hyperthermia-treated donor sites after 8 weeks.
• No adverse effects were reported by patients or observed by physicians during the study period.

Conclusions:

• Mild topical hyperthermia is an effective and safe method for reducing erythematous discoloration in split-thickness skin graft donor sites.
• The treatment leads to decreased erythema and reduced blood flow, suggesting improved wound healing or resolution.
• This non-invasive approach offers a promising therapeutic option for managing donor site aesthetics and potentially improving healing outcomes.