An anesthesia assistant (AA) is a healthcare professional who works under the direct supervision of an anesthesiologist to provide patient care before, during and after surgery. An AA assists with preoperative assessments, administers medications and monitors vital signs throughout the procedure. A certified registered nurse anesthetist (CRNA) is a highly skilled advanced practice registered nurse who specializes in administering anesthesia for surgical procedures. CRNAs are responsible for assessing patients prior to surgery, determining appropriate dosages of medication and monitoring patients' vital signs during the procedure. They also provide post-operative care including pain management and recovery assistance.