A nurse is assessing a patient who has been bedridden for several days following abdominal surgery. During a skin assessment, the nurse notes an area over the patient's sacrum that appears dark red and does not blanch when pressed. The skin remains intact, but the discoloration persists. Which stage of pressure injury does this finding most likely represent?
- Unstageable injury with obscured full-thickness tissue loss
- Stage 2 partial-thickness skin loss with exposed dermis
- Stage 4 full-thickness skin and tissue loss
- Stage 1 non-blanchable erythema with intact skin