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consensus conference and their comments were used to create the final definitions. Pressure Ulcer Definition. A pressure ulcer is localized injury to the skin and/or underlying tissue usually over a bony prominence, as. a result of pressure, or pressure in combination with shear.
A pressure ulcer is the result of a degenerative change caused by. biological tissue (skin and underlying tissue) being exposed to pressure. and shear forces. The increased pressure prevents the blood from. circulating properly, and causes cell death, tissue necrosis and the. development of pressure ulcers.