72-year-old teacher presents to a skilled nursing facility for rehabilitation after being in the hospital for 6 weeks. she was treated for sepsis and respiratory failure and had to be on the ventilator for 3 weeks. you are completing your initial assessment and are evaluating her skin condition. on her sacrum, there is full-thickness skin loss that is 5 cm in diameter, with damage to the subcutaneous tissue. the underlying muscle is not affected. you diagnose this as a pressure ulcer.
a. satge 1
b. satge 2
c. satge 3
d. satge 4