Sentence:  ...stable intact <WSD>eschar</WSD> on the heels should not be removed. Blood flow in the tissue under the <WSD>eschar</WSD> is poor and the wound is susceptible to infection. The <WSD>eschar</WSD> acts as a natural barrier to infection by keeping the bacteria from entering the wound. If the <WSD>eschar</WSD> becomes unstable (wet, draining, loose, boggy, edematous, red) it should be debrided according to the clinic or facility protocol 
Meaning of the word marked with <WSD> tags:  A superficial structure of dead tissue, usually hardened, commonly, but not necessarily dark, adhering to underlying living or necrotic tissue, caused by gangrene or a burn