A person who holds a license to practice as a registered nurse in this state may use the title registered nurse and the abbreviation, RN. A person who holds a license to practice as a certified registered nurse anesthetist in this state may use the title, certified registered nurse anesthetist abbreviated, CRNA, and the title, advanced practice registered nurse abbreviated, APRN. Source: SDC 1939, § 27.0907; SL 1947, ch 123 , § 10; SL 1955, ch 91 , § 4; SDC Supp 1960, § 27.0904 (4); SL 1967, ch 101 , § 4 (4); SL 1976, ch 228 , § 24; SL 1979, ch 255 , §§ 29, 30; SL 2014, ch 180 , § 4.