Collins
World English Dictionary
decubitus ulcer
 
n
bedsore, Nontechnical names: pressure sore a chronic ulcer of the skin and underlying tissues caused by prolonged pressure on the body surface of bedridden patients

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

decubitus ulcer n.
See bedsore.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Britannica
Encyclopedia

decubitus ulcer

an ulceration of skin and underlying tissue caused by pressure that limits the blood supply to the affected area. As the name indicates, bedsores are a particular affliction for persons who have been bedridden for a long time. The interference with normal blood flow is caused by the prolonged pressure of the body upon the bed and the friction against the bedclothes. Bedsores are more likely to affect the skin over the bony prominences of the body, such as the elbows, hips, and the back at the level of the hip bones. Prevention and treatment of bedsores include frequent changes of position of the bedridden person, daily bathing, and topical (local) medication.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Only patients admitted to small urban hospitals were found to have a higher risk for decubitus ulcer.
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