(1) Certified Registered Nurse Anesthetist (CRNA) practice is the independent and/or collaborative performance of any act involving the determination, preparation, administration, or monitoring of anesthesia care and anesthesia-related services, and the management of acute and chronic pain. The CRNA is certified in the population of family/individual health across the lifespan whose health status may range from healthy through all recognized levels of acuity, including persons with immediate, severe, or life-threatening illnesses or injuries in diverse settings.