A nurse anesthetist, formally called a Certified Registered Nurse Anesthetist (CRNA), is an advanced practice registered nurse who administers anesthesia to patients before, during, and after surgical procedures. They are among the highest-paid nursing professionals in the United States, with a median annual salary of $223,210 as of 2024. CRNAs provide anesthesia in every setting where it’s needed, from major hospital operating rooms to outpatient surgical centers, and they care for patients of all ages.
What a Nurse Anesthetist Does
The core of the job is keeping patients safe, pain-free, and stable while they undergo surgery or other procedures that require anesthesia. That starts well before anyone enters an operating room. A CRNA evaluates each patient beforehand, reviewing their medical history, identifying potential risks like drug allergies or conditions such as asthma and diabetes, and explaining what to expect from the anesthesia process.
During a procedure, the CRNA selects and delivers precise doses of anesthetic medications. Some of these drugs numb specific parts of the body (regional anesthesia), while others act on the brain to induce sleep (general anesthesia). Throughout the operation, the CRNA continuously monitors the patient’s vital signs, breathing, heart rhythm, and physical response to the drugs, adjusting dosages as needed. After surgery, they oversee the recovery from anesthesia, watching for complications as the patient wakes up.
CRNAs work alongside surgeons, anesthesiologists, and other physicians as part of a care team. In 25 states, governors have opted out of the federal requirement for physician supervision, allowing CRNAs to practice independently. In the remaining states, they work under varying degrees of collaboration or supervision arrangements with anesthesiologists.
How CRNAs Differ From Anesthesiologists
Anesthesiologists are physicians who complete medical school and a residency in anesthesiology. CRNAs take a different path through nursing, critical care experience, and a doctoral-level nurse anesthesia program. Despite widespread debate about the two models of care delivery, a systematic review published in the British Journal of Anaesthesia found that available studies had too many limitations to draw conclusions about differences in patient safety based on provider type alone.
There’s also a third role worth knowing about: the Certified Anesthesiologist Assistant (CAA or AA). Unlike CRNAs, anesthesiologist assistants cannot practice independently. They work only under the direct supervision of an anesthesiologist and take delegated orders rather than making autonomous clinical decisions. Their training programs also don’t require prior nursing, medical, or healthcare experience for admission, and their students average about 2,600 hours of clinical anesthesia education compared to roughly 8,636 hours for CRNAs.
Education and Training Required
Becoming a CRNA is one of the longest training paths in nursing. The full journey from starting a nursing degree to finishing a nurse anesthesia program takes roughly 7 to 8.5 years. Here’s the typical sequence:
- Bachelor’s degree in nursing: A four-year BSN is the standard starting point, though graduates with a bachelor’s or graduate degree in a related major also qualify.
- Registered nurse licensure: You need an active, unrestricted RN license before moving forward.
- Critical care experience: At least one year of full-time work (or the part-time equivalent) in a critical care setting such as a surgical ICU, cardiac ICU, or respiratory ICU. Many applicants accumulate more than the minimum to strengthen their applications and clinical skills.
- Doctoral nurse anesthesia program: These programs range from 36 to 51 months depending on the university. Since 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). This requirement became universal for all entry-level graduates as of January 2025.
That critical care experience is a defining feature of CRNA preparation. Before ever studying anesthesia, these nurses have spent years managing ventilators, cardiac monitors, and unstable patients in intensive care units. That clinical foundation is a major reason the profession emphasizes autonomous decision-making.
Certification and Ongoing Requirements
After completing a doctoral program, graduates must pass a national certification exam administered by the National Board of Certification and Recertification for Nurse Anesthetists (NBCRNA). Passing this exam earns the CRNA credential.
Maintaining certification isn’t a one-time event. CRNAs operate on a four-year continuing education cycle that requires 100 credits: 60 from assessed coursework and 40 from professional activities such as teaching, publishing, or committee work. Within each four-year cycle, they must also complete core modules in four areas: airway management, anesthesia equipment and safety, pharmacology, and human physiology. Every eight years, they take a performance assessment that evaluates their clinical knowledge. It’s a standards-based evaluation, not a pass/fail exam.
Where Nurse Anesthetists Work
Hospital operating rooms are the most common workplace, but CRNAs practice in a wide range of settings. You’ll find them in outpatient surgery centers, labor and delivery units, pain management clinics, dental offices, and military medical facilities. In rural areas especially, CRNAs are often the primary or sole anesthesia provider, which is one reason so many states have moved toward allowing independent practice.
The profession has deep roots in military medicine. The first nurse to administer anesthesia on record was Catherine S. Lawrence, who gave chloroform to wounded soldiers during the Civil War’s Battle of Bull Run in 1863. Both World Wars significantly expanded the training and recruitment of nurse anesthetists to meet battlefield demand, and military service remains a common career path for CRNAs today.
Salary and Job Growth
Nurse anesthetists are consistently the highest-earning nursing specialty. The median annual wage was $223,210 in May 2024, according to the Bureau of Labor Statistics. Employment is projected to grow 9% from 2024 to 2034, driven by an aging population needing more surgical procedures, expanded scope-of-practice laws, and ongoing demand in underserved areas.
The combination of high compensation, clinical autonomy, and strong job security makes the CRNA career path attractive despite the demanding education requirements. For nurses already working in critical care who want to advance their practice and earning potential, it remains one of the most direct routes to a six-figure healthcare career.