Final answer:
Nurses who updated tracheostomy care procedures and are receiving positive feedback are in the Refreezing phase of the change process, where new practices are reinforced and integrated into the daily operations.
Step-by-step explanation:
The nurses who performed a comprehensive literature review and changed the facility's policy for tracheostomy care appear to be involved in the Refreezing phase of the change process. This phase involves reinforcing and stabilizing the new changes after they've been implemented so that they become established practices within the organization. The positive feedback they are receiving suggests that the new evidence-based procedure is being accepted and integrated into the facility's daily operations, which is indicative of the Refreezing stage.