Registered Nurse, Ambulatory Surgery Center. Position Summary. The Same Day Services unit is located within the Ambulatory Surgical Care Building. The unit consists of 9 patient bays for preoperative, postoperative Phase II management and discharge of surgical/procedural inpatients and outpatients. Key Responsibilities. Care for pediatric, adult and geriatric patients who present for surgery, pain management, endoscopy, injections and other invas...