CRNAsSometimes called a CRNA, nurse anesthesiologist, or nurse anesthetist, these are advanced practice registered nurses (APRN) who specialize in administering anesthesia for surgical, diagnostic, and therapeutic procedures. and other highly trained anesthesia professionalsare prepared to keep you safe before, during, and after your procedure. You may also hear CRNAs called nurse anesthesiologists or nurse anesthetists. Learn how they deliverhigh-quality anesthesia care.