A CRNA, or certified registered nurse anesthetist, is an advanced practice nurse who administers anesthesia for surgeries, procedures, and pain management. CRNAs handle every phase of anesthesia care: evaluating patients beforehand, keeping them safe and comfortable during a procedure, and managing their recovery afterward. They are one of the most highly trained nursing professionals in the United States, and in many hospitals and surgical centers, a CRNA is the person you’ll interact with most on the day of your surgery.
What CRNAs Do Before Surgery
Your experience with a CRNA typically starts before you ever enter an operating room. In the preoperative phase, the CRNA conducts a comprehensive assessment of your health, reviewing your medical history, current medications, and any conditions that could affect how your body responds to anesthesia. Asthma, diabetes, and drug allergies are all factors that change how anesthesia is planned and dosed.
Based on that assessment, the CRNA develops an individualized anesthesia care plan, choosing the type and dosage of anesthesia best suited to your procedure and your body. They also obtain your informed consent, walking you through what to expect, how you’ll feel, and what risks are involved. If you’ve ever had a conversation with someone in scrubs explaining that you’ll “feel sleepy in a moment,” that was likely your CRNA.
What Happens During Your Procedure
Once your procedure begins, the CRNA’s job shifts to real-time management of your anesthesia and vital signs. This includes selecting and implementing the anesthetic technique, whether that’s general anesthesia (where you’re fully unconscious), regional anesthesia (such as a spinal or epidural block that numbs a large area of your body), or sedation (where you’re relaxed and drowsy but not fully under). The choice depends on the type of surgery, your health, and sometimes your preference.
Throughout the procedure, the CRNA administers anesthetic medications and continuously monitors your heart rate, blood pressure, oxygen levels, and breathing. They insert and manage monitoring devices, adjusting dosages in response to how your body reacts minute by minute. If your blood pressure drops or your heart rate changes unexpectedly, the CRNA is the person making immediate adjustments to keep you stable. This constant vigilance is the core of anesthesia care, and it requires both deep clinical knowledge and fast decision-making.
Recovery and Pain Management
After surgery, the CRNA facilitates your recovery from anesthesia, monitoring you as the medications wear off. They conduct postanesthesia evaluations, checking for side effects like nausea, confusion, or breathing difficulty. Pain management is a major part of this phase. Your CRNA determines the best approach to controlling your pain as you wake up and works with the rest of your care team to set up a plan for managing discomfort after discharge.
Where CRNAs Work
CRNAs practice across a wide range of settings. Bureau of Labor Statistics data shows that 46% of advanced practice nurses in this category work in physicians’ offices, 25% in hospitals, and 9% in outpatient care centers. Beyond these, CRNAs work in dental offices, pain management clinics, military healthcare facilities, and even patients’ homes for certain procedures. In rural and underserved areas, a CRNA may be the sole anesthesia provider available, making them essential to surgical access in communities without physician anesthesiologists.
How CRNAs Differ From Anesthesiologists
The most common point of confusion is the difference between a CRNA and an anesthesiologist. An anesthesiologist is a physician (MD or DO) who completed medical school followed by a residency in anesthesiology. A CRNA follows a nursing pathway: they earn a bachelor’s degree in nursing, work as a registered nurse (typically in an intensive care unit to gain critical care experience), and then complete a doctoral-level nurse anesthesia program that lasts a minimum of 36 months. All U.S. nurse anesthesia programs now award a doctoral degree.
In day-to-day clinical practice, CRNAs and anesthesiologists perform many of the same tasks. The key difference is in how their work is supervised. The Centers for Medicare and Medicaid Services requires physician supervision of CRNAs for hospitals to receive Medicare and Medicaid reimbursement for anesthesia services, but state governors can opt out of this requirement. As of June 2024, 25 states plus Washington, D.C., and Guam have done so, allowing CRNAs to practice without physician oversight. In those states, CRNAs often serve as independent anesthesia providers.
Regarding safety, published research comparing outcomes between CRNAs and physician anesthesiologists is limited. A systematic review of studies from 1990 to 2003 found too little high-level evidence to conclude that one provider type is safer than the other. In practice, both follow rigorous safety protocols, and the anesthesia-related mortality rate in the U.S. has dropped dramatically over the past several decades regardless of provider model.
Education and Training
Becoming a CRNA requires significant education and clinical experience. The typical path starts with a four-year bachelor’s degree in nursing, followed by at least one to two years working as a registered nurse in a critical care setting like an ICU. Candidates then enter a doctoral nurse anesthesia program lasting at least 36 months, which includes extensive clinical rotations covering thousands of anesthesia cases across different surgical specialties, patient populations, and anesthesia techniques. After graduating, candidates must pass a national certification exam to earn the CRNA credential.
The total training timeline, from starting a nursing degree to becoming a practicing CRNA, is roughly 9 to 11 years when you include required work experience. This makes it one of the longest and most rigorous training paths in nursing.
Salary and Job Demand
CRNAs are among the highest-paid nursing professionals in the country. The median annual salary was $212,650 as of May 2023, according to the Bureau of Labor Statistics. Compensation varies by location, practice setting, and whether the CRNA works independently or as part of an anesthesia care team. CRNAs in rural areas or those willing to take on-call shifts often earn above the median. Demand for CRNAs remains strong, driven by an aging population needing more surgical procedures and a persistent need for anesthesia providers in areas where physician anesthesiologists are scarce.