CNOR Operating Room Nursing

Answer: C-Setting up supplies ahead of time and covering them with sterile towels for protection may disrupt the integrity of the sterile field. If sterile instruments are set up in advance, the nurse may be unaware if something in the environment occurs that compromises the sterile field. Covering with towels and then later uncovering them may also inadvertently usher in more microorganisms through air currents or increase the risk of the items becoming wet.