Vascular surgery is a surgical specialty focused on treating diseases of the arteries, veins, and lymphatic system throughout the body, excluding the heart and brain. It covers everything from blocked leg arteries and bulging aortic aneurysms to varicose veins and blood clots. Vascular surgeons use both traditional open operations and minimally invasive catheter-based techniques to restore blood flow, prevent ruptures, and save limbs.
Conditions Vascular Surgeons Treat
The specialty covers a wide range of problems across the circulatory system. The most common reasons people see a vascular surgeon include peripheral artery disease (narrowed arteries in the legs), carotid artery disease (narrowed arteries in the neck that supply the brain), aortic aneurysms (dangerous bulges in the body’s largest artery), deep vein thrombosis (blood clots in deep veins), and chronic venous insufficiency that causes varicose veins, leg swelling, or skin ulcers.
Beyond these common conditions, vascular surgeons also manage rarer problems: arteriovenous malformations (abnormal tangles of blood vessels), lymphedema (chronic tissue swelling from a damaged lymphatic system), renal artery stenosis (narrowing that affects kidney function and blood pressure), thoracic outlet syndrome (compressed blood vessels near the collarbone), and connective tissue disorders like Marfan syndrome and Ehlers-Danlos syndrome that weaken blood vessel walls. Some conditions, like aortic dissection or acute limb ischemia (a sudden loss of blood flow to a limb), require emergency surgery within hours.
Open Surgery vs. Endovascular Techniques
Vascular procedures fall into two broad categories: open surgery and endovascular (catheter-based) repair. Open surgery involves a direct incision to access the blood vessel, repair it, or bypass a blockage with a graft. Endovascular procedures work from inside the vessel, typically through a small puncture in the groin. A catheter is threaded to the problem area, where the surgeon can inflate a balloon to widen a narrowed artery, place a stent to hold it open, or deploy a fabric-lined tube to reinforce an aneurysm from within.
Endovascular approaches are less physically stressful, involve shorter hospital stays, and carry fewer immediate complications. Patients undergoing catheter-based procedures for blocked arteries in the legs often go home the same day with immediate improvement in symptoms. Open surgery, on the other hand, tends to produce more durable long-term results. A study comparing endovascular and open repair for blocked arteries in the pelvis found both had identical success rates at 12 months, but endovascular patients spent less time in intensive care and had fewer postoperative complications.
For many conditions, endovascular repair has become the first-line approach, with open surgery reserved for complex anatomy or cases where a catheter-based fix isn’t feasible. In practice, many patients are candidates for either, and the choice depends on the specific location of disease, overall health, and life expectancy.
Common Vascular Procedures
Aortic Aneurysm Repair
An aortic aneurysm is a balloon-like bulge in the aorta. The danger is rupture, which is often fatal. Current guidelines recommend repair when an abdominal aortic aneurysm reaches 5.5 cm in men or 5.0 cm in women, though recent research suggests the optimal threshold may actually be higher, around 6.9 cm for men and 6.1 cm for women in average health, because the risks of surgery itself must be weighed against the risk of rupture. Smaller aneurysms are monitored with regular imaging.
Repair can be done with open surgery (replacing the weakened section with a synthetic graft) or endovascularly (threading a stent-graft into position through the groin). Endovascular repair has better short-term outcomes, with perioperative mortality for open repair of a non-ruptured abdominal aneurysm ranging from 1% to 5%, while endovascular repair carries lower early risk. Long-term survival is similar between the two approaches.
Carotid Artery Surgery
When plaque builds up in the carotid arteries in the neck, it can break off and cause a stroke. The traditional procedure, carotid endarterectomy, opens the artery and physically removes the plaque. It remains the gold standard, particularly for people over 70 with symptoms like mini-strokes or transient vision loss. For patients under 70, stenting through a catheter is a reasonable alternative with comparable outcomes. Stenting is also preferred for people who face higher surgical risk due to factors like prior neck radiation, previous endarterectomy, or significant heart disease.
Peripheral Artery Revascularization
Peripheral artery disease reduces blood flow to the legs, causing pain with walking and, in severe cases, tissue death that can lead to amputation. Balloon angioplasty and stenting are the main catheter-based treatments. For blockages in the upper leg arteries, drug-coated balloons and drug-eluting stents help prevent the artery from narrowing again. Bypass surgery, which reroutes blood around a long blockage using a vein or synthetic tube, is often preferred for disease in certain locations like the common femoral or popliteal arteries, where it tends to last longer.
Venous Procedures
Chronic venous insufficiency, where valves in the leg veins stop working properly, causes blood to pool and leads to varicose veins, swelling, and sometimes open sores on the lower legs. Modern treatment has moved away from the old “vein stripping” approach. Most patients now receive thermal ablation, where a thin probe uses radiofrequency energy or laser heat to seal the faulty vein shut. Non-thermal options include medical adhesive that glues the vein closed and mechanochemical ablation, which combines a rotating wire with a chemical agent. These procedures are typically done in an office setting with local anesthesia and minimal downtime.
How Diagnosis Works
Vascular surgeons rely heavily on noninvasive imaging to map out disease before deciding on treatment. Duplex ultrasound is the workhorse: it combines standard ultrasound images with Doppler technology to measure blood flow speed and direction in real time, making it ideal for evaluating carotid arteries, leg veins, and aneurysms. It’s painless, uses no radiation, and can be done in the office.
For more detailed views, CT angiography provides high-resolution 3D images of arteries throughout the body using contrast dye and X-rays. It’s particularly useful for planning aneurysm repairs and mapping complex blockages. MR angiography offers similar detail without radiation and can be done without contrast dye, making it a good option for people with kidney problems who can’t tolerate the contrast agents used in CT scans. CT tends to be faster and more widely available, while MRI provides better soft tissue detail in certain situations.
Risks of Major Vascular Surgery
All surgery carries risk, and vascular operations involve blood vessels that supply critical organs. In a study of major open vascular procedures, the overall perioperative mortality rate was 1.2%. Broken down by procedure, carotid endarterectomy had the lowest death rate at 0.5%, while open abdominal aortic aneurysm repair carried the highest at roughly 2% to 5% depending on the center’s volume and the patient’s health.
The most frequent complications were blood-related issues (occurring in about 19% of major open cases), followed by cardiac events (10.5%), respiratory problems (10.3%), and gastrointestinal issues (10.7%). Kidney complications affected about 8% of patients, with open aneurysm repair carrying the highest kidney risk at 14%. Neurological complications were most common after carotid surgery, at 9.3%, which makes sense given the procedure’s proximity to the brain. Endovascular alternatives reduce many of these risks substantially, which is a major reason they’ve become the preferred approach when anatomy allows.
Training and Specialization
Becoming a vascular surgeon requires extensive training. The American Board of Surgery recognizes three pathways. The traditional route involves five years of general surgery residency followed by a two-year vascular surgery fellowship. An early specialization track condenses this to four years of general surgery plus two years of vascular training at the same institution. The newest option is an integrated five-year program that combines core surgical training with vascular surgery from the start, though graduates of this pathway are certified only in vascular surgery, not general surgery. All three paths lead to board certification after passing rigorous examinations.