Eschar vs eschar
Eschar (Eschar) should not be confused with scab (Scab). The eschar is the necrotic tissue of a full-thickness wound. You may see eschars in burns, gangrenous ulcers, fungal infections, necrotizing fasciitis, spotted fever, and skin anthracnose. Current diagnosis and treatment guidelines recommend that stable, complete (dry, well-attached, intact without erythema or undulation) heel eschar should not be removed. The blood flow of the tissue under the eschar is poor, and the wound is prone to infection. As a natural barrier, eschar can prevent bacteria from entering and infection. If the eschar becomes unstable (wet, oozing, loose, sticky, swollen, red), it should be debrided and removed in accordance with institutional guidelines.
When blood or exudate on the wound surface coagulates to form a crust/skin, it is called scab. Scab can be seen in superficial or partial cortical wounds. Scab is a brown hard crust formed on the surface of a skin wound within 24 hours. The role of scab is to prevent further dehydration of the injured skin, prevent infection and prevent the entry of external pollutants. Before the skin underneath is completely repaired, the scab will be firmly attached to the local area. After the repair is completed, the scab will naturally fall off.
Debridement methods should be able to effectively promote the wound healing process. Accurate assessment of wound tissue types, selection of appropriate debridement methods and appropriate wound dressings can effectively improve and promote wound healing.
