DR BARRY SLAVEN / SCIENCE PHOTO LIBRARY DR BARRY SLAVEN / SCIENCE PHOTO LIBRARY
Infected legs in ischaemia. Infected and ulcerated legs of a patient with ischaemia, showing the characteristic reddening (rubor) and mottled appearance. Ischaemia is a restriction of blood supply to the tissues. This causes a shortage of oxygen and glucose needed for metabolism, resulting in damage and possibly death (necrosis) of the affected tissue. It is usually caused by damage to the blood vessels that supply the tissue or damage to the tissue itself.
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