What is the key assessment feature of a stage II pressure ulcer?

The key assessment feature of a stage II pressure ulcer is partial-thickness skin loss involving the epidermis and/or dermis. This stage is characterized by the presence of an open ulcer, which may appear as a shallow crater or a blister filled with clear fluid. Importantly, the tissue loss at this stage does not extend through the full thickness of the skin, thereby distinguishing it from deeper pressure ulcers that would be categorized as stage III or stage IV.

Understanding the specifics of this classification is crucial for effective wound management and treatment strategies. In stage II pressure ulcers, the absence of full-thickness skin loss means that the underlying structures such as fat and muscle are still intact. This knowledge aids in determining appropriate interventions and helps to prevent progression to more severe stages of pressure ulcers.