ABSTRACT
Pressure ulcers are defined by the Agency for Healthcare Research and Quality (AHRQ; previously called Agency for Health Care Policy and Research) as lesions caused by prolonged exposure to pressure leading to tissue damage. They represent areas of necrosis due to compression of soft tissues between bony prominences and external surfaces. This damage can be relatively minor or can lead to massive necrosis involving deep tissues that can cause significant morbidity and mortality.
