What is observed in a Stage 3 pressure ulcer?

A Stage 3 pressure ulcer is characterized by the full-thickness loss of skin, which exposes underlying tissue. In this stage, yellow fatty tissue may be visible at the base of the ulcer. This indicates that the damage has extended beyond the epidermis and dermis, affecting subcutaneous tissue. The presence of yellow fatty tissue signifies that the wound is significant and may require serious treatment to promote healing and prevent infection.

In contrast, non-blanching redness typically describes a Stage 1 pressure ulcer, where the skin is intact but shows signs of pressure damage. Bright red muscle would represent a deeper injury than Stage 3, often associated with a Stage 4 ulcer, where muscle, tendon, or bone may be exposed. Intact skin with no injury does not relate to any stage of pressure ulcer development, as it contradicts the definition of a pressure ulcer entirely. Thus, the identification of yellow fatty tissue at the base marks a clear indicator of the severity associated with a Stage 3 pressure ulcer.