reduce the incidence of hospital-acquired  pressure ulcers (O) on day 3 of hospitalization (T)?

 In  patients that are identified as high risk for developing a pressure  ulcer (P), does the implementation of a pressure ulcer protocol  initiated in the emergency department (I) as compared to patients who  receive usual care (C), reduce the incidence of hospital-acquired  pressure ulcers (O) on day 3 of hospitalization (T)?