Diseases & Conditions
Pressure ulcers, also known as bed sores or pressure sores, often occur in persons who cannot move around easily. The skin and tissue underneath break down from continued pressure and poor circulation. When the skin breaks down, it becomes red. Open sores develop after the skin changes. In severe cases, the pressure ulcer causes destruction of muscle or even bone underneath the skin.
Pressure ulcers usually occur in persons who have predisposing risk factors, such as poor nutrition, continued moisture (especially from urine or feces), confinement to a bed or wheelchair, and other medical problems (especially spinal cord injury, hip fracture, or dementia). Because older people are more likely to need a wheelchair or to spend more time sitting in a chair or being confined to bed, they need special attention to prevent formation of a pressure ulcer. It is important for anyone with risk factors to discuss pressure ulcer formation with his or her doctor. Even mild skin redness may be the start of a pressure ulcer. The January 8,2003,issue of JAMA includes an article about pressure ulcers.
WHY DO PRESSURE ULCERS FORM?
Continued pressure on the skin from sitting or lying in one position causes poor circulation. Blood and lymphatic fluid have difficulty going to and leaving the pressurized area, causing both a lack of oxygen and swelling. In persons with poor nutrition or inability to move themselves, this lack of blood flow may cause the skin to break down. It becomes reddened and may tear away from the supporting tissue underneath. If the conditions leading to the pressure ulcer are not rapidly corrected, the skin damage may spread to the tissue, muscle, and even bone underneath. Pressure ulcers can become infected. This may make treatment more difficult.
PREVENTION AND TREATMENT OF PRESSURE ULCERS
Keep skin free of moisture
Frequently turn or reposition someone who is confined to bed or to a wheelchair
Air mattresses may be used for high-risk persons
Correct or treat incontinence
Special dressings may be used
Debridement (cutting away dead tissue)or surgery may be required for severe pressure ulcers
FOR MORE INFORMATION
National Pressure Ulcer Advisory Panel
American Academy of Family Physicians
National Institutes of Health
Janet M. Torpy, MD, Writer; Cassio Lynm, MA, Illustrator; Richard M. Glass, MD, Editor