What does a Stage 4 pressure ulcer reveal?

A Stage 4 pressure ulcer is characterized by the presence of extensive damage that extends through the full thickness of the skin and into underlying tissues. The correct answer indicates that bright red muscle or bone is exposed, reflecting significant tissue loss and suggesting that the ulcer has advanced to a level where deeper structures are affected. This stage is the most severe, necessitating immediate medical intervention and often surgical evaluation.

In contrast, other descriptions in the options refer to different stages of pressure ulcers or other conditions. For example, yellow fatty tissue may indicate a Stage 3 ulcer, while a fleshy pink base with drainage points to a less severe stage than Stage 4. Non-blanching redness suggests superficial tissue damage or a Stage 1 pressure ulcer, where skin remains intact but shows signs of pressure. Understanding these distinctions is crucial for effective patient care and intervention strategies.