Job Summary. The circulating RN is key for the surgeon. The position holds a very high responsibility role for the operating room. Responsibilities and Duties. The circulator choreographs the actions of the surgeon, the anesthesia provider, and the scrub personnel into a coherent and harmonious dance. Circulators control the flow of the room from set-up to the end of surgery. The circulating nurse is a strong patient advocate. S/he is an infectio...