A vascular surgeon is a doctor who diagnoses and treats problems with your blood vessels, excluding those in the heart and brain. Your body contains roughly 60,000 miles of blood vessels, including arteries, veins, and lymphatic vessels, and vascular surgeons are the specialists trained to manage diseases affecting all of them. If you’ve been told you need one, or you’re just trying to understand what they do, here’s a practical breakdown.
What Vascular Surgeons Treat
The scope of vascular surgery covers a wide range of conditions. Some of the most common include peripheral artery disease (narrowed arteries in the legs), aortic aneurysms (dangerous bulges in the body’s largest artery), carotid artery disease (blockages in the neck arteries that can cause stroke), deep vein thrombosis (blood clots in the legs), and chronic venous problems like varicose veins, leg swelling, and venous ulcers.
Beyond those, vascular surgeons also manage less well-known conditions: lymphedema, arteriovenous malformations, renal artery blockages, thoracic outlet syndrome, and intestinal blood flow problems, among others. They play a particularly important role in diabetic foot care, where poor circulation causes wounds that won’t heal. In these cases, restoring blood flow to the legs and feet can be the difference between saving a limb and losing it.
How They Differ From Heart Surgeons
The distinction trips people up because the heart is obviously part of the circulatory system. The dividing line is mostly anatomical. Cardiac (cardiothoracic) surgeons handle the heart itself and the parts of the aorta closest to it, typically by opening the chest. Vascular surgeons handle everything downstream, often using minimally invasive techniques that access blood vessels through a small incision in the groin or arm.
The aorta is a good example of where these two specialties overlap. It runs from the heart all the way down to the groin. For complex aortic disease that spans the full length, both surgeons may work together: the cardiac surgeon handles the portion near the heart, while the vascular surgeon repairs the downstream sections. Brain blood vessels, meanwhile, fall under the domain of neurosurgeons or neurointerventionalists.
Open Surgery vs. Endovascular Procedures
Vascular surgeons are trained in two fundamentally different approaches. Open surgery involves a larger incision to directly access and repair a blood vessel, often by sewing in a graft to bypass a blockage or replace a weakened section of artery. Endovascular surgery is minimally invasive: the surgeon threads a thin catheter through a blood vessel, usually starting from the groin, and uses tools like stents, balloons, or lasers to fix problems from the inside.
Endovascular procedures generally mean shorter hospital stays, faster recovery, and fewer immediate complications. They tend to be preferred for older patients or those with other health conditions that make major surgery risky. Open surgery, on the other hand, often lasts longer before needing a follow-up procedure. For a younger, otherwise healthy patient, an open repair upfront may offer better long-term durability. The choice depends on the specific problem, the patient’s overall health, and the anatomy of the affected vessels.
For varicose veins, the endovascular approach has largely replaced traditional vein stripping. A common technique uses laser energy delivered through a catheter to heat and seal the vein shut. Blood reroutes through nearby healthy veins, and the treated vein eventually shrinks away.
How They Diagnose Vascular Problems
Much of the diagnostic work happens in a vascular lab using painless, noninvasive tests. The two most common are the ankle-brachial index (ABI) and duplex ultrasound.
An ABI compares the blood pressure in your ankle to the blood pressure in your arm. A significant difference suggests that arteries in the legs are narrowed or blocked, which is a hallmark of peripheral artery disease. The test takes only a few minutes and uses a standard blood pressure cuff.
Duplex ultrasound combines traditional ultrasound imaging with blood flow measurement. A technologist applies gel to the skin and moves a probe over the area of concern. It can evaluate the carotid arteries for stroke risk, check the aorta for aneurysms, assess kidney blood flow, and map out blockages in the leg arteries or veins. Neither test involves needles, dye, or radiation, and there are no side effects.
When Aneurysms Need Repair
One of the most consequential decisions a vascular surgeon makes is whether to repair an aortic aneurysm or simply monitor it. A normal aorta is about 2 centimeters wide. When it balloons outward, the risk of rupture (a life-threatening emergency) increases with size.
The traditional surveillance threshold has been 5.5 centimeters: below that, many patients are monitored with regular ultrasounds rather than operated on. However, this isn’t a rigid cutoff. Current evidence suggests that for younger patients or those with aneurysms between 4.5 and 5.5 centimeters, earlier repair may make sense depending on growth rate and overall fitness. An aneurysm that grows more than 1 centimeter in a year, or one that causes tenderness or symptoms, is generally considered for repair regardless of size. Below 4 centimeters, surgery is rarely recommended for aneurysms without symptoms.
Training and Qualifications
Vascular surgeons complete some of the longest training pipelines in medicine. There are two paths. The traditional route involves five years of general surgery residency followed by a two-year vascular surgery fellowship, totaling seven years of surgical training after medical school. The newer integrated pathway is a dedicated five-year vascular surgery residency that combines core surgical skills with vascular-specific training from the start. Both lead to board certification through the American Board of Surgery.
Signs You May Need a Vascular Surgeon
Most people see a vascular surgeon after a referral from their primary care doctor. Common reasons for referral include leg pain or cramping during walking that goes away with rest (a classic sign of peripheral artery disease), leg swelling that doesn’t resolve, non-healing wounds on the feet or lower legs, and varicose veins that cause pain or skin changes. People with diabetes, high blood pressure, or a history of tobacco use are at higher risk for vascular disease and more likely to need evaluation.
A vascular surgeon doesn’t only perform surgery. A significant part of the job involves deciding that surgery isn’t needed yet, managing conditions with medication or lifestyle changes, and scheduling the surveillance imaging that tracks a problem over time. Many patients see a vascular surgeon regularly for years without ever needing an operation.