Epidemiology and etiology

Pressures sores, also known as decubitus ulcers or bedsores, affect approximately 7% to 24% of long-term care and 10% to 18% of hospitalized patients. Patients of advanced age and those with spinal cord or orthopedic injuries are highest risk.41

A pressure sore is a chronic wound that results from continuous pressure on the tissue overlying a bony prominence. This pressure impedes blood flow to the dermis and subcutaneous fat, resulting in tissue damage and necrosis.42,43

Pressure sore infections develop from breaks in skin integrity and contamination from dirty areas of close proximity. Pressure sore infections generally are polymicro-bial44

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