A Certified Registered Nurse Anesthetist (CRNA) provides and manages anesthesiology services for adult and pediatric patients in hospital settings, including general, pediatric, thoracic, and obstetrical anesthesia. Responsibilities include pre-evaluation, administration of anesthesia, post-surgical monitoring, and emergency response, ensuring compliance with medical standards and hospital policies. The role requires collaboration with surgical and anesthesia teams, uses EMR systems like Cerner, and typically demands at least 5 years of experience or equivalent training.