Open wound chronic skin graft-vs-host disease. Are these wounds ischemic?

Area of Science:

• Dermatology
• Hematology
• Transplantation immunology

Background:

• Chronic graft-versus-host disease (cGVHD) is a significant complication following allogeneic hematopoietic stem cell transplantation (HSCT).
• Skin involvement is common in cGVHD, with variable manifestations across different skin layers.
• Severe cGVHD can lead to deep, open skin wounds, but the underlying pathophysiology, particularly the role of ischemia, remains unclear.

Purpose of the Study:

• To investigate the role of ischemia in the formation of severe, open skin wounds in a patient with cGVHD.
• To assess the potential utility of transcutaneous continuous oximetry in evaluating skin lesions in cGVHD.

Main Methods:

• Case report of a patient with severe, open wound skin cGVHD.
• Utilized transcutaneous continuous oximetry to measure oxygen levels in the ulcerous lesions.
• Considered hyperbaric oxygen therapy (HBOT) based on initial assessment.

Main Results:

• Transcutaneous continuous oximetry revealed that the studied ulcers were non-ischemic.
• The findings suggest that impaired blood flow (ischemia) is not the primary cause of these severe cGVHD skin ulcers.

Conclusions:

• Severe skin ulceration in cGVHD may not be primarily driven by ischemia.
• These results indicate that treatments targeting ischemia, such as HBOT, might not be effective for all cGVHD skin ulcers.
• Further research is needed to understand the pathophysiology of cGVHD-associated skin wounds and guide optimal therapeutic strategies.