1. Changing a tracheostomy dressing and tie tapes is an important procedure to maintain the tracheostomy site and ensure proper functioning of the tracheostomy tube. 2. The key steps involve preparing supplies, cleaning and drying the inner cannula, cleaning the site, applying a new sterile dressing, and securing new tie tapes with a double knot. 3. Important documentation includes details of the procedure, secretions, patient tolerance, and education provided.