A certified registered nurse anesthetist (CRNA) is an advanced practice nurse who administers anesthesia for surgeries, procedures, and pain management. CRNAs handle every phase of anesthesia care: evaluating patients before a procedure, delivering the anesthesia itself, monitoring vital signs throughout surgery, managing the airway, and overseeing recovery afterward. They are among the highest-paid nursing professionals in the United States, with a median annual salary of $212,650 as of 2023.
What CRNAs Do Before, During, and After Surgery
A CRNA’s work begins well before a patient enters the operating room. During the preoperative phase, they review medical histories, identify potential risks like allergies to anesthetics or complications related to conditions such as asthma or diabetes, and educate patients about what to expect. This assessment directly shapes which type of anesthesia is used and how much is given.
During surgery, CRNAs administer the anesthesia, calculate precise dosages based on the patient’s weight, health, and the type of procedure, and continuously monitor vital signs including heart rate, blood pressure, oxygen levels, and breathing. Keeping the airway open and ensuring adequate oxygenation throughout surgery is one of their most critical responsibilities. Adverse respiratory events, including inadequate ventilation and difficult intubation, represent the single largest category of anesthesia-related injuries, so airway management demands constant vigilance.
After the procedure, CRNAs monitor patients as they wake up from anesthesia, manage pain, watch for complications like nausea or breathing difficulties, and assess whether the patient is stable enough to move to recovery. They also provide postoperative education so patients and families know what’s normal and what to watch for at home.
Types of Anesthesia CRNAs Provide
CRNAs are trained to deliver the full range of anesthesia options. General anesthesia renders a patient completely unconscious and is used for major surgeries. Regional anesthesia, which includes spinal and epidural blocks, numbs a large area of the body while the patient stays awake or lightly sedated. This is commonly used during childbirth or orthopedic procedures. Local anesthesia numbs a small, specific area for minor procedures. Sedation, sometimes called “twilight” anesthesia, keeps a patient relaxed and drowsy but not fully unconscious, and is frequently used for procedures like colonoscopies or dental work.
Choosing the right approach depends on the surgery, the patient’s health profile, and the risks involved. CRNAs assess all of these factors and adjust their plan accordingly, sometimes changing course during a procedure if the patient’s condition shifts.
Where CRNAs Practice
CRNAs work in hospitals, outpatient surgery centers, dental offices, pain management clinics, and military settings. They play an especially important role in rural healthcare. Research on surgical services in rural communities found that 81.2% of rural counties in the U.S. had no anesthesiologist, making CRNAs the primary or sole anesthesia providers in many of these areas. Rural hospitals reported that CRNAs had strong, diverse skill sets and that anesthesia services were generally not a limitation for elective and noncomplex surgeries, though emergency surgeries and around-the-clock obstetric coverage remained challenging.
Independent Practice and Physician Supervision
Whether a CRNA works independently or under physician supervision depends on state law. Approximately 19 states allow CRNAs to provide anesthesia without any supervision or direction from a physician. In these states, CRNAs can evaluate patients, develop anesthesia plans, and manage care entirely on their own. In other states, some level of physician involvement is required, though the specifics vary widely.
The safety question around independent CRNA practice has been studied extensively. A large analysis of obstetric anesthesia care found no systematic differences in complication rates between hospitals using different staffing models, whether anesthesiologists worked alone, CRNAs worked independently, or the two collaborated. The authors concluded that restricting which licensed providers can deliver anesthesia may not improve safety outcomes, at least in obstetric settings. That said, high-risk patients tend to be referred to facilities with more specialized staffing, which makes direct comparisons between practice models complicated.
Education and Certification Requirements
Becoming a CRNA requires a significant educational commitment. Candidates must first earn a bachelor of science in nursing, obtain an RN license, and work in an acute care setting, typically an intensive care unit, for at least one year. Many programs prefer two or more years of critical care experience because it builds the clinical judgment needed for anesthesia training.
As of January 2022, all students entering accredited nurse anesthesia programs must graduate with a doctoral degree, either a Doctor of Nursing Practice (DNP) or a Doctor of Nurse Anesthesia Practice (DNAP). Programs typically take three to four years and include extensive clinical hours alongside coursework in pharmacology, anatomy, physiology, and anesthesia techniques. This doctoral requirement places CRNAs among the most highly educated nursing professionals.
After graduating, candidates must pass a national certification exam. Maintaining the credential requires ongoing education through the Continued Professional Certification (CPC) program, which renews every four years. Each cycle requires 100 credits split between educational and professional development categories, with a midpoint check-in at the two-year mark to help CRNAs stay on track.
How CRNAs Differ From Anesthesiologists
The most common point of confusion is the difference between a CRNA and an anesthesiologist. Anesthesiologists are physicians who complete medical school followed by a residency in anesthesiology. CRNAs follow the nursing education pathway, culminating in a doctoral nursing degree. Both deliver the same types of anesthesia and manage patients throughout surgery.
In day-to-day practice, the overlap is substantial. Both professionals perform preoperative assessments, administer anesthesia, manage airways, place arterial and central lines when needed, and monitor patients through recovery. The key differences are in their training backgrounds, the clinical settings where they’re most common, and whether state law requires physician involvement. In large academic hospitals, anesthesiologists and CRNAs frequently work as a team. In rural hospitals, standalone surgical centers, and military field hospitals, CRNAs often practice with a high degree of autonomy.
Salary and Job Demand
CRNAs are among the best-compensated professionals in nursing. The median annual wage was $212,650 in May 2023, according to the Bureau of Labor Statistics. Salaries vary by region, with higher pay common in rural areas or states where CRNAs practice independently, partly because demand outstrips supply in those locations.
Demand for CRNAs is expected to remain strong. An aging population means more surgeries, and the shortage of anesthesiologists in rural and underserved areas keeps CRNAs essential to maintaining access to surgical care. The combination of high compensation, strong job security, and clinical autonomy makes it one of the most competitive advanced practice nursing careers.