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Exact Pressure Ulcer

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Pressure ulcer, decubitus, or bedsore, is a necrosis of soft tissues in result of constant pressure associated with ischemia. Soft tissues can tolerate high pressure for short period of time. However if the pressure applied against soft tissues exceeds 32 mmHg, which is the blood pressure in arterial capillaries, arterial capillaries close and ischemia occurs (3). Exact pressure value varies depending on the body part, age, tissue compliance, etc. In a healthy person signals from tissues, either conscious or unconscious, cause a person to change position and thus depressurizing the area ando recover blood flow. Those who can’t avoid constant pressure over certain area (eg, elderly, immobilized or under acute care) are at greater risk of pressure

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