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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.
Pressure ulcers are localized areas of tissue necrosis that typically develop when soft tissue is compressed between a bony prominence and an external surface for a long period of time. Ulcers covered with slough or eschar are by definition unstageable. The base of the ulcer needs to be visible in order to properly stage the ulcer (though the ulcer will be at least a stage III, as slough and eschar do not form on stage I or II ulcers).