Mayo brothers later became the world famous Mayo Clinic . McGaw worked for Drs . William J . and Charles H . Mayo from 1893-1908 . Between 1912 and 1920 , almost 20 post graduate schools for nurse anesthesia opened . The Mayo Clinic was among one of those offering the program . It was McGraw 's early work that helped to achieve the success of the nurse anesthetist and its subsequent training programs . She and other like her pioneered the field of nurse anesthesia . Previously physicians were...

In 1923 the Alumnae Association of the Lakeside School for Anesthesia was formed . This was the only group of its kind regarding nurse anesthetists . It wasn 't until 1930 , at the American Nurses Association convention , that Agatha Hodgins proposed organizing the nurse anesthetists into a national group . This group would promote , organize and uphold the standards of nurse anesthetists . In 1931 the National Association of Nurse Anesthetists (NANA ) was formed . The first meeting was held on June 17th , 1931 and...