Factors Potentially Affecting TcPO2:
•Bony prominence
•Callous (other skin disease, eg scleroderma)
•Edema
•Infection
•Arterial oxygen   concentration
•Tissue oxygen consumption
•Blood flow around electrode
•Perfusion pressure
•Room temperature
•Hydration state
•BODY POSITION!!!!
•Technician
ischemic legs picture Strang_Bertha Untitled-6