Pressure ulcers

A pressure ulcer is an ischaemic necrosis of the skin and subcutaneous tissue caused by unrelieved and prolonged vascular compression on a specific area of the body, usually between a bony prominence and a supporting item such as a bed or chair.

This external pressure is transmitted through the support (bed, armchair) and affects the part of the body bearing the support. The extent of the pressure ulcer depends on several factors, particularly the intensity of the pressure, the duration, the resistance of the tissue to pressure and the general condition of the patient.

Locally, tissue damage is the result of three forces:


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