Endovascular Surgery

Endovascular Surgery: Treating Vascular Disease From Inside the Vessel

Endovascular surgery is a minimally invasive way of treating diseased arteries and veins from inside the blood vessel itself. Instead of opening the affected area through a large incision, the physician works through a small puncture — usually in the groin, wrist or arm — guiding thin instruments through the vascular system under real-time imaging. It is used to widen narrowed arteries, reinforce weakened ones, remove clots and redirect abnormal blood flow, in patients ranging from those with leg artery disease to those with aortic aneurysms.

If you have been told you have a narrowed, blocked, enlarged or weakened blood vessel, the diagnosis itself can be unsettling. Some patients worry about stroke, limb loss or aneurysm rupture. Others have been living with symptoms for months: leg pain when walking, swelling, wounds that do not heal, numbness, or sudden circulation problems that needed urgent attention. Vascular disease covers a wide spectrum, and so do its treatments — which is why understanding what endovascular surgery actually involves matters before you weigh up your options.

This page explains how endovascular treatment works, which vascular conditions it addresses, how it differs from open surgery, how long procedures take, and what recovery looks like. One point deserves stating plainly at the start: endovascular surgery is not the right answer for every condition or every patient. In some cases open repair is more durable; in others, medication and surveillance are the safer plan. When it is suitable, however, the endovascular approach can restore blood flow, exclude an aneurysm from circulation or clear a clot with considerably less physical trauma than a traditional operation.

What Is Endovascular Surgery?

Endovascular surgery is a catheter-based method of treating diseases of the arteries and veins from within the blood vessels. Rather than exposing the vessel through an incision, the physician inserts a thin, flexible tube — a catheter — through a small puncture and steers it through the circulation to the site of disease using live X-ray guidance, contrast imaging and, in some cases, ultrasound. The treatment is delivered through the bloodstream itself.

Depending on the condition, the procedure may involve widening a narrowed artery with a balloon, placing a stent to hold a vessel open, inserting a fabric-covered stent graft to seal off an aneurysm, removing or dissolving a clot, deliberately closing an abnormal or bleeding vessel, or relieving a blocked or compressed vein. The underlying concept is the same across every vascular territory: precise, image-guided treatment delivered from inside the vessel, tailored to the individual’s anatomy.

Because access is gained through a puncture rather than an incision, endovascular techniques have widened the range of patients who can be treated. Older adults, people with heart or lung disease, patients with diabetes or kidney impairment, and those who would tolerate a major open operation poorly can often still be considered for catheter-based repair, provided the anatomy is appropriate.

What do we mean by vascular?

Vascular simply means relating to blood vessels — the arteries that carry oxygen-rich blood away from the heart, the veins that return blood to it, and the smaller vessels in between. A vascular condition is any disease that affects these vessels: narrowing from plaque, ballooning of a weakened wall, clot formation, inflammation, compression or abnormal connections between vessels. Because blood vessels run through every organ and limb, vascular disease can show itself almost anywhere — in the legs, the neck, the abdomen, the kidneys or the intestines.

What is vascular surgery?

Vascular surgery is the specialty that diagnoses and treats diseases of the arteries and veins outside the heart and brain — although vascular teams frequently work alongside cardiovascular surgery and neurology colleagues when disease crosses those boundaries. Vascular specialists manage conditions with the full range of tools: lifestyle and risk-factor treatment, medication, supervised exercise programmes, catheter-based endovascular procedures, and open operations. A defining feature of good vascular care is that the specialist is not committed to one technique; the recommendation follows the diagnosis, not the other way round.

What are vascular and endovascular surgeries?

Vascular and endovascular surgeries are two arms of the same specialty: open vascular operations repair or bypass vessels through direct surgical exposure, while endovascular procedures treat the same problems from inside the vessel through a small puncture. In an open operation, the surgeon makes an incision, exposes the diseased artery or vein, and repairs, replaces or bypasses it directly. In an endovascular procedure, the repair is performed with catheters, wires, balloons, stents and grafts navigated through the bloodstream under imaging.

Open surgery remains important. For some anatomies — very long blockages, heavily calcified vessels, certain aneurysm shapes, or infections — a direct surgical repair may be more durable or simply safer. Many modern vascular teams also combine the two approaches in a single hybrid procedure: for example, surgically exposing one artery while treating another segment with a balloon and stent. The honest answer to which approach is better is that it depends on the vessel, the disease pattern and the patient, which is why detailed imaging comes before any recommendation.

Who May Need Endovascular Surgery?

Patients may be considered for endovascular surgery when a blood vessel is narrowed, blocked, bulging, torn, compressed or otherwise abnormal. Some are referred after a sudden event, such as acute limb ischaemia or a large clot. Others are diagnosed during evaluation of long-standing symptoms, or after an imaging test performed for an entirely different reason happens to reveal a vascular condition — a common way aneurysms are first discovered.

What are the symptoms of a vascular problem?

The symptoms of a vascular problem depend on which vessels are affected and whether the disease involves arteries or veins. Arterial disease in the legs typically causes cramping, fatigue, heaviness or pain in the calf, thigh or buttock during walking that eases with rest — a pattern called claudication. More advanced disease may cause foot pain at rest, numbness, coldness, colour changes, wounds that will not heal, or tissue loss. Narrowing of the carotid arteries in the neck may cause transient stroke-like episodes: weakness on one side, facial drooping, difficulty speaking or temporary loss of vision in one eye.

Aneurysms behave differently. Many cause no symptoms at all until they become large or rupture, which is why early detection through imaging and structured surveillance matters so much. Venous disease produces its own pattern: leg swelling, aching, heaviness, skin discolouration, varicose veins, ulcers around the ankle, or the pain and swelling of a deep vein thrombosis. Some vascular problems announce themselves suddenly; many progress quietly for years first.

What is the most common vascular disease?

Atherosclerosis — the gradual build-up of fatty plaque inside artery walls — underlies the most common vascular diseases, including peripheral artery disease of the legs and carotid artery narrowing. On the venous side, varicose veins and chronic venous insufficiency are the conditions vascular clinics see most often. Atherosclerotic disease shares risk factors with heart disease: smoking, diabetes, high blood pressure, high cholesterol, kidney disease and family history. This overlap is one reason a patient found to have peripheral vascular disease is usually assessed for cardiovascular risk as a whole, not just for the artery causing symptoms.

How is a vascular problem diagnosed?

Diagnosis begins with a detailed history and physical examination, not with a scanner. The care team asks about walking distance, pain patterns, previous stroke or heart disease, diabetes, smoking, kidney function, blood pressure, cholesterol, medications, earlier procedures and family history. The vascular examination itself includes checking pulses, skin temperature, wound appearance, limb measurements and — where relevant — neurological signs.

Imaging then defines the problem precisely. Common tests include vascular ultrasound, ankle-brachial index measurement for leg circulation, CT angiography, MR angiography, catheter-based angiography and laboratory studies. Together they establish whether disease is mild, moderate or severe; whether the symptoms are genuinely caused by the vascular finding; and whether endovascular treatment, open surgery, medical therapy or structured monitoring is the safest plan. Many patients seek a second opinion at this stage — particularly when different doctors have suggested different treatments, when they have been told they need a major operation, or when they want to know whether a less invasive option exists. A second opinion is especially valuable for aneurysms, carotid stenosis, peripheral artery disease, complex venous disease and blockages that have recurred after previous procedures.

Conditions Treated With Endovascular Surgery

Endovascular techniques are used across a broad range of vascular conditions. Whether they are suitable in a given case depends on the diagnosis, the anatomy, the severity of symptoms, the patient’s general health and the expected durability of the repair. Some procedures are performed urgently; others are planned electively after careful imaging and discussion. Common indications include:

• Peripheral artery disease: narrowed or blocked leg arteries that limit walking, cause pain at rest or contribute to non-healing wounds.
• Critical limb ischaemia: severe loss of circulation that threatens the foot or leg and requires timely restoration of blood flow, usually alongside wound care and infection control.
• Aortic aneurysm: a weakened, enlarged section of the aorta that may be treated with an endovascular stent graft in anatomically suitable cases.
• Iliac, femoral or popliteal artery aneurysms: enlarged arteries in the pelvis or leg that carry a risk of clotting, embolisation or rupture.
• Carotid artery disease: narrowing of the arteries supplying the brain, which increases stroke risk in selected patients and may warrant intervention after careful assessment.
• Renal or mesenteric artery disease: reduced blood flow to the kidneys or intestines, sometimes causing resistant high blood pressure, declining kidney function or abdominal pain after meals.
• Deep vein thrombosis and venous obstruction: clots or chronic narrowing in major veins causing swelling, pain or long-term venous complications, treatable in selected cases by catheter-based clot removal or venous stenting.
• Dialysis access problems: narrowing or blockage in the fistulas or grafts used for haemodialysis, which can often be reopened without a new operation.
• Vascular trauma or bleeding: selected injuries and bleeding sites that can be sealed by catheter-based repair or embolisation.
• Arteriovenous malformations or fistulas: abnormal connections between vessels that may need targeted closure or flow reduction, sometimes over several staged sessions.

How do you fix vascular problems?

Vascular problems are fixed along a spectrum that runs from lifestyle treatment to open surgery, and most patients start at the less invasive end. For many people with early arterial disease, the most effective treatment is not a procedure at all: stopping smoking, supervised exercise, blood pressure and diabetes control, and cholesterol-lowering therapy prescribed by the treating doctor. When a mechanical fix is needed, the options are catheter-based endovascular repair, open surgical repair or bypass, or a hybrid combination of both. Some conditions — small stable aneurysms, mild narrowings without symptoms — are best managed with surveillance imaging rather than intervention. Endovascular surgery is chosen when the expected benefit clearly outweighs the procedural risk and the anatomy allows a durable repair. That judgement is individual: two patients with the same diagnosis can reasonably receive different recommendations.

EVAR: Endovascular Aneurysm Repair

EVAR — endovascular aneurysm repair — is the treatment of an aortic aneurysm from inside the vessel, using a fabric-covered stent graft delivered through the arteries in the groin. Once positioned inside the aneurysm and expanded, the graft creates a new channel for blood flow and excludes the weakened aneurysm sac from circulation, reducing the pressure on its wall.

An EVAR procedure begins long before the operating room. Planning relies on detailed CT measurements of the aorta: the diameter and length of the healthy vessel above and below the aneurysm, the involvement of branch arteries to the kidneys and intestines, and the size and quality of the access vessels through which the device must travel. The stent graft is selected — and in complex cases customised — to fit that anatomy precisely. Not every aneurysm is anatomically suitable; when the sealing zones are too short or too angulated, open repair or a more complex branched or fenestrated device may be discussed instead.

It is often said that the endovascular era has raised the bar for aneurysm surgery, and the phrase captures something true. The availability of a less invasive repair has changed how patients, anaesthetists and surgeons weigh up risk: patients who once faced only the choice between a major open operation and watchful waiting can now be considered for repair through two groin punctures. At the same time, EVAR carries its own long-term obligation. Because the graft sits inside the aneurysm rather than replacing it, lifelong surveillance imaging is needed to check that the seal holds and that no blood is leaking back into the sac. Open repair, by contrast, tends to need less intensive follow-up once healed. A responsible aneurysm service explains both sides of that trade-off rather than presenting the endovascular route as automatically superior.

How Endovascular Surgery Is Performed

Evaluation and treatment planning

The process begins with a complete vascular evaluation. Existing ultrasound, CT, MRI or angiography images, laboratory results, medication lists and previous operation reports all contribute, because they help establish whether a patient is likely to be a candidate for endovascular treatment and which questions the new work-up needs to answer.

At the hospital, the team confirms the diagnosis and updates any tests that need repeating. Imaging is the centre of planning: it shows the length and severity of a narrowing, the diameter of the vessel, the presence of calcium or clot, the relationship to branch arteries, and which access routes are safe for catheters. For aneurysm repair, measurements are especially detailed, because the device must match the patient’s anatomy exactly. Alongside the vascular imaging, the team assesses heart, lung, kidney and bleeding risk. Blood tests evaluate kidney function, blood count and clotting status. Medications are reviewed carefully — particularly blood thinners, antiplatelet drugs, diabetes medications and supplements that may affect bleeding — and any adjustments are decided by the treating physicians, not left to the patient to work out alone.

Before the procedure

Preparation usually includes fasting for a set period, a medication plan agreed with the treating doctor, and instructions about hydration and kidney protection where contrast dye will be used. Patients with contrast allergy, kidney disease, diabetes or complex medical histories receive additional planning to reduce risk. The anaesthesia plan is matched to the procedure and the patient: some interventions are performed with local anaesthetic and sedation, while longer or more complex repairs need regional or general anaesthesia. Before the day itself, the team explains where the access point will be, how discomfort will be managed, and roughly how long observation is likely to take afterwards.

During the procedure

The patient is positioned in a specialised procedure room or hybrid operating room equipped for real-time vascular imaging. A typical procedure then follows a recognisable sequence:

• Step 1 — Access: the skin is cleaned and draped, the access area is numbed, and a small puncture is made into the vessel. A thin sheath is placed so that wires and catheters can pass safely.
• Step 2 — Navigation: under live X-ray and contrast imaging — sometimes with ultrasound assistance — the physician steers the catheter through the vascular system to the target area.
• Step 3 — Treatment: one or more techniques are applied to the diseased segment, chosen according to the plan and adjusted to what the imaging shows in real time.
• Step 4 — Confirmation: the result is checked with imaging before anything is withdrawn, so that residual narrowing, leaks or flow problems can be addressed immediately.
• Step 5 — Closure: the catheter and sheath are removed, and the puncture is closed with manual pressure or a dedicated closure device, depending on the vessel and the patient.

The treatment itself may involve one technique or several in combination:

• Balloon angioplasty: a small balloon is inflated inside the narrowed vessel to improve blood flow.
• Stent placement: a small mesh tube supports the vessel wall and helps keep it open; stent procedures are among the most frequently performed endovascular treatments.
• Stent graft repair: a covered stent reinforces a weakened wall or excludes an aneurysm from circulation.
• Thrombectomy: specialised catheter tools physically remove clot from an artery or vein.
• Thrombolysis: clot-dissolving medication is delivered directly into the clot in selected cases.
• Embolisation: materials delivered through the catheter deliberately close an abnormal or bleeding vessel.
• Atherectomy and vessel preparation: in selected cases, plaque-modifying techniques prepare a heavily diseased segment before ballooning or stenting.

Technology used in endovascular care

Modern endovascular surgery depends on detailed imaging and precise device delivery. High-resolution angiographic systems let the physician see blood flow and guide instruments through small or tortuous vessels. Ultrasound is used to assess vessels beforehand, to guide the initial puncture and to monitor results afterwards. CT and MR angiography shape the plan itself — the safest route, the right device, the correct sizes. Some procedures take place in hybrid operating rooms, where advanced imaging and full surgical readiness exist in the same space. That combination matters for complex cases: if the anatomy turns out to be more difficult than expected, the team can escalate to a surgical solution without moving the patient. Radiation exposure and contrast volume are actively managed throughout, with particular care in patients with kidney disease or long procedures. The point of all this technology is not novelty; it is better decisions, greater accuracy and fewer surprises.

How long does endovascular surgery take?

Most straightforward endovascular procedures, such as a single-vessel balloon angioplasty, take well under two hours, while complex repairs — aneurysm exclusion, long occlusions, clot removal or multi-vessel work — can take several hours. The honest answer is that duration depends on the anatomy, the number of vessels treated and how the vessels respond during the procedure. Patients should also allow time for preparation, anaesthesia, recovery-room observation and any post-procedure imaging or blood tests, so the day as a whole is longer than the intervention itself. The treating team can give a realistic estimate once they have reviewed the diagnosis and the imaging — a figure quoted before that review is a guess, not a plan.

Immediately after the procedure

After endovascular surgery, patients are monitored in a recovery area, a hospital room or, after complex repairs, an intensive care unit. Nurses and physicians check blood pressure, pulse, oxygen levels, the access site, limb circulation, comfort and — where relevant — neurological status. Many patients need to lie flat for a period to protect the puncture site from bleeding. Discomfort after catheter-based procedures is usually modest and is managed according to a structured plan; you can read how Acibadem approaches this in how we control pain after surgery and invasive procedures. Some patients go home the same day or the next; others stay several days, particularly after aneurysm repair, clot treatment, limb-threatening ischaemia or complex reconstruction. Discharge instructions cover care of the access site, activity limits, the medication plan set by the treating doctor, hydration, which changes should be reported to the team, and the follow-up schedule.

Why Acting Early Matters

Vascular disease often progresses quietly. A narrowing becomes more severe, a clot extends, an aneurysm enlarges, or a wound deteriorates because the tissue is not receiving enough blood. Delaying evaluation narrows the range of options and can turn a planned procedure into an urgent one.

In peripheral artery disease, early diagnosis can help prevent the progression from walking pain to rest pain, ulcers, infection and tissue loss. In aneurysm disease, surveillance and timely repair address the vessel before rupture becomes the presenting event. In carotid disease, appropriate management in selected patients is aimed squarely at reducing the chance of stroke. In deep vein thrombosis and venous obstruction, earlier care can limit clot burden and the long-term swelling and skin changes that follow untreated venous disease in some patients.

Acting early does not always mean having a procedure early. It means getting an accurate diagnosis, understanding how serious the finding is, bringing risk factors under control, and identifying the right moment for intervention if one is needed. For most vascular conditions, timing is not an administrative detail — it is part of the treatment itself.

Benefits of Endovascular Surgery

For suitable patients, the endovascular approach offers several potential advantages over more invasive alternatives. None of these are promises — individual results depend on the condition, the anatomy and overall health — but they explain why catheter-based treatment is often considered first when it is anatomically feasible.

Benefit	What It Means for You
Smaller access points	Treatment is usually performed through a small puncture rather than a large incision, which may reduce wound discomfort and visible scarring.
Less physical stress	Surrounding tissues are disturbed less, which matters most for older adults and people with heart, lung, kidney or diabetes-related risks.
Shorter hospital stay for many procedures	Depending on the diagnosis and complexity, patients may spend less time in hospital than after an equivalent open operation.
Faster early mobility	Walking is often encouraged relatively soon after the procedure, once the access site is stable and the physician approves activity.
Precise image-guided treatment	Real-time imaging lets the physician navigate the vessels and treat the diseased segment with close attention to the individual anatomy.
An option for complex medical patients	Some patients who would face higher risk with open surgery can still be considered for minimally invasive repair, depending on anatomy and overall health.

Recovery After Endovascular Surgery

Recovery varies with the procedure, the vessel treated, the anaesthesia used, the patient’s general health and whether the treatment was planned or urgent. The timeline below describes a typical course; your own team’s instructions take precedence over any general schedule.

Time Period	What Patients Can Expect
Day 1	Monitoring focuses on the access site, circulation, comfort, blood pressure, kidney function where contrast was used, and early mobility once it is safe.
First week	Mild bruising or tenderness at the puncture site is common. Heavy lifting and strenuous activity are avoided while walking and light daily movement are gradually resumed.
First month	Many patients return to normal routines, depending on the procedure. Follow-up may include examination, medication review by the treating doctor, and vascular ultrasound or other imaging.
Longer term	Ongoing surveillance is important for stents, stent grafts, treated aneurysms and any recurrent disease. Durable results also depend on risk-factor control and taking medications as prescribed.

A practical question many patients raise is when it is safe to fly after a vascular procedure. The answer depends on the specific intervention, the access vessel and how recovery is progressing, and it should come from the treating team rather than a general rule. For background on how flight timing is judged after different operations, see flying after surgery: how soon is safe, procedure by procedure.

What Influences a Good Outcome?

A good result after endovascular surgery depends on far more than the technical success of the procedure. It begins with the correct diagnosis and careful patient selection. Not every blockage should be opened, not every aneurysm should be repaired immediately, and not every patient benefits from the same device. The right plan balances symptom relief, risk reduction, durability and safety — and sometimes the right plan is to wait.

Anatomy is one of the most important factors. The length and location of a narrowing, the amount of calcification, the quality of the vessels above and below the diseased segment, the shape of an aneurysm, the involvement of branch vessels and the size of the access arteries all influence which treatment will last. In some patients, open repair offers better long-term durability; in others, the endovascular route offers the safest balance of benefit and recovery. A team that performs both can advise without a built-in preference.

General health matters just as much. Diabetes, smoking, kidney disease, high blood pressure, high cholesterol, heart disease, clotting disorders and infection all affect healing and how long a treated vessel stays open. Patients who stop smoking, attend follow-up visits and manage their chronic conditions place themselves in a measurably stronger position for lasting improvement — no device compensates for an untreated risk profile.

Taking medications as prescribed is part of the treatment, not an afterthought. Many patients need antiplatelet therapy, cholesterol-lowering medication, blood pressure treatment or anticoagulation depending on what was treated. The treating physician explains how long each medication is needed and what should happen if another doctor proposes pausing it before dental work or another procedure — a conversation that belongs between doctors, with the patient informed at every step.

Follow-up imaging is the final pillar. Vascular disease can recur, stents can re-narrow, aneurysm repairs need surveillance, and untreated segments can progress. Regular follow-up lets the team detect change early, often before symptoms return. Where a patient lives far from the treating hospital, surveillance can be coordinated with a local physician, with images and reports shared between the doctors involved.

Experience and team coordination tie all of this together. Endovascular cases can demand rapid decisions, careful imaging interpretation and collaboration across specialties. Complex aneurysms, limb-salvage cases, carotid interventions and venous reconstructions do best in the hands of teams that routinely weigh the full range of vascular treatment options rather than applying a single method to every patient.

How Endovascular Care Is Organised at Acibadem

At Acibadem, endovascular surgery sits within a structured vascular care pathway rather than standing alone as a single procedure. Depending on the case, that pathway brings together imaging specialists, cardiovascular surgeons, interventional radiologists, anaesthesiologists, intensive care teams, wound care specialists and rehabilitation professionals. Complex cases can be reviewed in a multidisciplinary setting — particularly valuable when several treatment options are possible and the safest choice depends on a nuanced reading of the imaging alongside the patient’s overall condition.

The planning philosophy is deliberately individual. A patient with a small, stable aneurysm may need surveillance rather than repair. A patient with claudication may need supervised exercise and medical treatment before any intervention is discussed. A patient with a non-healing foot wound may need urgent blood-flow restoration coordinated with wound care and infection control. A patient with carotid narrowing needs careful stroke-risk assessment before any procedure is recommended. The same diagnosis can lead to different plans in different patients, and that is by design, not inconsistency.

Hospitals in the group use advanced vascular imaging, catheter-based treatment environments and hybrid operating capability where appropriate, allowing teams to plan precisely and adapt during a procedure if the anatomy proves more complex than expected. Endovascular, open surgical, medical and surveillance options are considered within one clinical framework, so the recommendation reflects the condition rather than a one-size-fits-all pathway.

Deciding on Treatment: Questions Worth Asking

If you have been diagnosed with a vascular blockage, aneurysm, clot, carotid narrowing or venous obstruction, the most useful next step is understanding — of the diagnosis, the options and the trade-offs. Whichever team treats you, certain questions sharpen the discussion: Is intervention needed now, or is surveillance reasonable? Why is the endovascular route suitable — or unsuitable — for my anatomy? What would open repair offer instead? What is the expected hospital stay, what medications will I need afterwards and for how long, and what does long-term follow-up involve?

A second opinion, based on your actual imaging rather than a verbal summary, is a legitimate and common part of vascular decision-making — especially before aneurysm repair, carotid intervention or repeat procedures. The best treatment plan is not always the least invasive one; it is the one most likely to serve you safely over time. With an accurate diagnosis, a coordinated vascular team and a plan tailored to your anatomy and health, that decision becomes far clearer than it feels on the day of diagnosis.