Performs scrub role, without assistance by locating supplies, equipment, and instruments; prepares operating room utilizing preference cards to set up surgical instruments and equipment; independently prepares the sterile field for adolescent, adult, and geriatric patients for the intra-operative experience; differentiates and demonstrates knowledge of sterilization methods required for instruments or equipment. Performs scrub activities based on principles of aseptic technique, infection control, universal precautions guidelines, environmental control, and life safety guidelines: anticipates needs of patient and surgeon; demonstrates critical thinking skills and prioritize activities when performing the scrub role; under supervision of the RN, demonstrates ability to prepare medications for procedures to be used by physicians; knows of routine drugs used intra-operatively, dosages, and/or concentration and appropriate route of administration.