Final answer:
Stage 3 pressure ulcers involve full-thickness skin loss with damage or necrosis of the underlying tissue. Treatment involves removing dead tissue and preventing infection.
Step-by-step explanation:
Pressure ulcers, also known as bedsores, are classified based on their severity. Stage 3 pressure ulcers involve full-thickness skin loss with damage or necrosis of the underlying tissue. At this stage, the ulcer looks like a deep crater or a cavity and may involve fat but not muscle or bone. The wound may have a yellow or sloughy base and may be accompanied by a foul odor. Treatment for stage 3 pressure ulcers involves removing dead tissue and keeping the wound clean to prevent infection.