A mark or character used as a conventional representation of an object, function, or process, e.g. the letter or letters standing for a chemical element or a character in musical notation.
An advanced practice [Registered Nurse] who spends at least one year working in an Intensive Care Unit after graduation then does a 27-36 month residency learning every type of [anesthesia]. Once graduated from the advanced anesthesia training, a CRNA must pass a national [accreditation] exam . Nurse Anesthetists were the first medical specialty to practice anesthesia and studies have shown there to be no difference in patient outcomes between MD and CRNA anesthetics.