When Does an Aortic Aneurysm Move From Monitoring to Repair? Size, Growth and Symptoms

The scan takes four minutes. A man in his late sixties lies on a narrow couch in a screening van parked outside a community center, a sonographer sliding a probe just below his ribs. He came because a letter told him to. He leaves with a slip of paper that reads “4.2 cm” and a booking for the same appointment next year. Nothing hurts. Nothing has changed. And yet something inside him has just acquired a name and a measurement.

That number is where most people’s questions begin. If an aneurysm is dangerous, why not fix it now? If it is not dangerous, why keep measuring it? Understanding when an aortic aneurysm needs surgery means understanding a deliberate trade: the operation carries its own risk, and for a small, quiet aneurysm that risk is usually higher than the risk of leaving it alone.

The threshold shifts with size, with how fast the vessel is widening, with where the aneurysm sits, and with the person carrying it. This article walks through each of those levers, in plain language, so the conversation with your own team starts from solid ground.

What "monitoring" an aortic aneurysm actually means

The aorta is the body’s main artery, a hose roughly the width of a garden hose that carries blood from the heart down through the chest and abdomen. An aneurysm is a section of that hose that has stretched and bulged; clinicians usually apply the word once the vessel is about one and a half times its normal width, which for the abdominal aorta means a diameter of 3 cm or more, according to MedlinePlus.

Monitoring, sometimes called surveillance, is not the same as doing nothing. It is a structured program of repeat imaging, usually ultrasound for the abdomen and CT or MRI for the chest, timed to how large the aneurysm already is. In the NHS screening program, a small aneurysm of 3 to 4.4 cm is rescanned once a year, a medium one of 4.5 to 5.4 cm every three months, and a large one of 5.5 cm or more prompts a referral to a vascular specialist within two weeks.

The logic rests on a simple fact about pressure and vessel walls. The wider a tube becomes, the more tension its wall carries at the same blood pressure, so risk of tearing rises steeply rather than gradually as diameter increases. Below the mid-5 cm range that risk is low enough that large randomized trials, including the UK Small Aneurysm Trial, found no advantage in operating early over watching and waiting.

Surveillance also buys time to do the other things that matter: controlling blood pressure, stopping smoking, and checking the heart, lungs and kidneys so that if repair is ever needed the person going into it is as fit as possible. The measurement on the slip of paper is the start of a plan, not the end of one.

At what size does an aortic aneurysm require surgery?

For an abdominal aortic aneurysm, the most widely quoted figure is 5.5 cm. Both the NHS and the Mayo Clinic describe this as the diameter at which elective repair is usually discussed for a person otherwise well enough for surgery. Below it, monitoring is the default. Above it, the balance tilts toward operating.

Why that number and not, say, 5.0 or 6.0? It comes largely from two randomized trials conducted in the United Kingdom and the United States in which people with aneurysms of roughly 4.0 to 5.5 cm were randomly assigned to early repair or to careful surveillance. Neither trial showed that early surgery helped people live longer. The operation’s own risks, in effect, canceled out the rupture risk it prevented at those sizes. That evidence set the modern threshold.

The aortic aneurysm size for surgery is not a fixed law of physics, though. Several considerations nudge it:

• Body size. A 5.0 cm aorta represents a greater relative stretch in a small-framed person than in a tall one, and some teams weigh aneurysm diameter against height or body surface area.
• Sex. Women tend to have narrower aortas to begin with and, in observational data, appear to rupture at smaller diameters. Guidelines increasingly discuss whether a lower threshold is appropriate for women, and many vascular teams treat 5.0 cm as a point for serious discussion.
• Shape. A saccular aneurysm, a lopsided bulge on one side of the vessel, is often considered earlier than a symmetrical, fusiform widening of the same diameter.

Measurement itself deserves a word. Ultrasound and CT can differ by several millimeters on the same aorta, and the same scanner can vary between visits. A single reading that jumps close to a threshold is usually confirmed before anyone books an operating room.

How fast do aortic aneurysms grow, and why growth rate matters

Most abdominal aneurysms enlarge slowly, by a few millimeters a year, which is exactly why annual scans make sense for the smaller ones. A person with a 3.5 cm aneurysm may go a decade without approaching a surgical size. But the pace is not uniform. Larger aneurysms tend to expand faster than small ones, current smokers’ aneurysms grow faster than non-smokers’, and a minority enlarge in unpredictable spurts.

That is where the second trigger comes in. The NHS notes that surgery may be recommended if an aneurysm grows by more than 1 cm in a year, regardless of the absolute diameter it has reached. The Mayo Clinic describes rapid growth in similar terms. A vessel wall that stretches that quickly is signaling weakness, and the concern is that the usual size-based reassurance no longer applies.

Consider two people with a 4.8 cm aneurysm. One has measured 4.6, 4.7 and 4.8 cm across three yearly scans. The other measured 3.6 cm twelve months ago. Same size today; very different conversations. The first is comfortably in medium-aneurysm surveillance. The second has grown 1.2 cm in a year and will likely be seen by a vascular surgeon soon, even though the diameter is still under 5.5 cm.

Growth rate also shapes how often you are scanned. When a medium aneurysm is rechecked every three months, the point is partly to catch a sudden acceleration between annual visits. If successive measurements are stable, the interval may relax; if they creep upward, it may tighten.

What you can influence is real, if modest. Smoking is the strongest modifiable driver of expansion, and quitting slows it. Well-controlled blood pressure reduces the force on the wall. Neither shrinks an aneurysm, but both can keep a small one small for longer, which is often the whole goal of surveillance.

How symptoms change the plan, whatever the size

Size and growth are the two numbers on the chart. Symptoms are the third trigger, and they override the other two. An aneurysm that is causing pain is treated as urgent even if it measures well under 5.5 cm.

Most aortic aneurysms produce no sensation at all. The vessel sits deep behind the intestines or inside the chest, and widening by itself does not register. That silence is why screening exists: the NHS offers a one-time ultrasound to men in the year they turn 65, and in the United States the CDC and MedlinePlus describe one-time screening for men aged 65 to 75 who have ever smoked. Without a scan, most people never know.

When an aneurysm does announce itself, it tends to do so in one of a few ways. A steady, deep ache in the abdomen, lower back or flank that does not shift with movement can indicate that the wall is stretching quickly or becoming inflamed. A pulsating sensation near the navel is sometimes noticed, particularly in slimmer people. In the chest, a thoracic aneurysm can press on neighboring structures and cause hoarseness, a persistent cough, difficulty swallowing or a sensation of chest or upper back pressure, according to the Mayo Clinic.

These are not the dramatic signs of rupture, which are covered later in this article. They are quieter, and clinicians take them seriously precisely because a symptomatic aneurysm behaves differently from a silent one of the same diameter. Tenderness when a doctor presses on the abdomen over the aorta is another finding that moves the timeline forward.

The practical message: if you are under surveillance and develop new, persistent pain in the back, abdomen or chest, do not wait for the next scheduled scan. Contact the team looking after you and describe what has changed.

Thoracic aneurysms and inherited conditions: different thresholds

Everything above concerns the abdominal aorta, which accounts for most aneurysms. The section that runs through the chest, the thoracic aorta, follows related but distinct rules, because it is under higher pressure closer to the heart and because its problems are more often inherited than acquired.

For thoracic aneurysms in people without a known connective tissue disorder, the Mayo Clinic describes repair being considered at around 5.5 cm in the ascending aorta, the first segment rising from the heart. Descending thoracic aneurysms are often watched to a somewhat larger size before intervention. Growth rate matters here too, and a rapidly widening thoracic aorta is a reason to act earlier.

Genetics shift the goalposts substantially. Several inherited conditions weaken the aortic wall itself:

• Marfan syndrome, a disorder of connective tissue affecting the eyes, skeleton and blood vessels.
• Loeys-Dietz syndrome, a related condition in which the aorta can tear at unusually small diameters.
• Vascular Ehlers-Danlos syndrome, marked by fragile vessel walls.
• Bicuspid aortic valve, in which the heart’s exit valve has two leaflets instead of three and is often accompanied by widening of the ascending aorta.

In these settings, teams commonly discuss repair at 5.0 cm, and sometimes lower, particularly if there is a family history of aortic dissection or if growth has been brisk. Aortic dissection is a tear in the inner layer of the aortic wall that lets blood force its way between the layers; it is the complication genetic aortic disease most often causes, and it can happen at sizes that would be unremarkable in someone without the condition.

Family history therefore deserves a direct question at every clinic visit. A parent or sibling who had an aortic event young changes the risk calculation, and may prompt screening of other relatives.

When does an aortic aneurysm need surgery? Who is offered repair and who is asked to wait

Put the triggers together and a pattern emerges. Repair is usually discussed when at least one of the following is true: the aneurysm has reached about 5.5 cm in the abdomen (or the relevant thoracic or genetic threshold), it has grown by more than 1 cm in a year, or it has started to cause symptoms. Those are the people typically offered an operation.

Being offered is not the same as being told. The other half of the equation is whether surgery is likely to be tolerated. Vascular teams assess the heart, lungs and kidneys carefully before any elective aortic repair, because these organs carry the strain of the operation. Someone with severe heart failure, advanced lung disease or very limited mobility may face an operative risk that exceeds their aneurysm’s rupture risk even at 6 cm. For them, continued surveillance, or a decision not to intervene at all, can be the reasonable choice, made jointly and revisited over time.

Then there is the group asked to wait despite feeling ready. A person with a 4.6 cm aneurysm who is otherwise fit will often ask for early repair to get it over with. The trial evidence, as discussed earlier, does not support that. Operating on a medium aneurysm exposes someone to the full risk of surgery in exchange for preventing a rupture that, at that size, is relatively unlikely in the coming year. The wait is uncomfortable but evidence-based.

Age alone is rarely the deciding factor. Fitness, kidney function and anatomy weigh more heavily than the number of birthdays. A person in their eighties in good health may be a better candidate than someone two decades younger with multiple organ problems.

Every one of these judgments is individual and belongs to the treating team, ideally a multidisciplinary one, with the patient at the center of the discussion.

What actually happens during aortic aneurysm repair

Two very different operations share the same goal: keep blood flowing through the aorta while taking pressure off the weakened wall. Which one a team proposes depends on the aneurysm’s shape and position, the health of the arteries leading to it, and the person’s overall fitness.

Open repair is the older approach. Under general anesthesia, the surgeon makes an incision in the abdomen or chest, temporarily clamps the aorta above and below the aneurysm, opens the bulging section and sews a synthetic fabric tube, called a graft, into place inside it. The aneurysm wall is then wrapped around the graft. Blood flows through the new tube; the old wall no longer bears the load. The operation typically takes several hours, and the clamping and the size of the incision are what make recovery longer.

Endovascular aneurysm repair, usually shortened to EVAR (or TEVAR for the thoracic aorta), reaches the aneurysm from inside the bloodstream. Through small incisions or punctures at the groin, the team threads a compressed stent graft, a fabric tube supported by a metal mesh, up through the leg arteries into the aorta, guided by X-ray imaging. Once positioned across the aneurysm, it is expanded and anchors to healthy vessel above and below, creating a new channel for blood. The aneurysm sac is left in place around it but sealed off from pressure.

EVAR is less invasive and is now the more common approach for abdominal aneurysms with suitable anatomy, according to the Mayo Clinic. Not every aneurysm qualifies. The stent graft needs a stretch of normal aorta to seal against, and leg arteries wide and straight enough to pass through. When those conditions are not met, open repair remains the standard.

Both procedures carry the risks common to major surgery: bleeding, infection, heart or kidney strain and, rarely, injury to the bowel or spinal cord blood supply. Your team will discuss which are most relevant to your case.

Open repair vs endovascular repair at a glance

People often arrive at a consultation having read that one approach is “better.” The honest answer is that each has trade-offs, and the right choice depends on anatomy and health rather than on preference alone. The table below summarizes the main practical differences described by the NHS and the Mayo Clinic.

Feature	Open repair	Endovascular repair (EVAR/TEVAR)
How the aorta is reached	Large incision in abdomen or chest	Small groin incisions; device threaded through arteries
Anesthesia	General	General, regional or local with sedation
Typical hospital stay	Around a week or longer	Usually a few days
Return to usual activity	Often several months	Often a few weeks
Early recovery burden	Higher: larger wound, more pain, slower mobility	Lower
Long-term imaging	Occasional checks	Lifelong scheduled scans to watch the stent graft
Chance of needing a later procedure	Lower	Higher, because of leaks around the graft or device movement
Who is usually suitable	Most anatomies; fitter patients	Anatomy must allow a secure seal; suits many higher-risk patients

The pattern is a familiar one in medicine: the less invasive option is gentler at the start and demands more attention afterward. The key long-term issue with EVAR is the endoleak, blood finding its way into the sealed-off aneurysm sac around or through the stent graft. Many endoleaks are minor and resolve or are simply watched; some require a further procedure to seal. Detecting them is the reason for the lifelong scan schedule, and skipping those appointments removes much of the benefit of having chosen EVAR in the first place.

Randomized comparisons of the two approaches have found that early differences tend to narrow over the following years. That is why the decision is framed as a choice between two acceptable paths rather than a superior and an inferior one.

Aortic aneurysm surgery recovery time: what the following days and weeks look like

The first night after either operation is usually spent in an intensive care or high-dependency setting, where blood pressure, kidney function and the circulation to the legs are checked closely. After EVAR, many people are walking the next day and eating normally soon after. After open repair, the bowel is often slow to restart, and the first few days involve intravenous fluids, careful pain control and gradual steps toward sitting, standing and short walks.

The NHS describes a hospital stay of a few days after endovascular repair and around a week or longer after open surgery, with full recovery measured in weeks for the former and often a few months for the latter. Those are typical ranges, not promises; age, fitness and any complications shift them in both directions.

Common experiences in the first weeks include:

• Fatigue that lasts longer than people expect, especially after open surgery.
• Groin bruising or a small lump after EVAR, which usually settles.
• Reduced appetite and altered bowel habit after open abdominal repair.
• Wound soreness that eases steadily; a wound that becomes red, hot or leaks fluid should be reported.

Driving is generally discouraged until you can perform an emergency stop comfortably and are off strong pain medicines, and insurers may have their own rules. Heavy lifting is typically avoided for several weeks after open surgery to protect the abdominal wall. Gentle walking, on the other hand, is encouraged from very early on because it reduces the risk of blood clots and pneumonia.

Follow-up imaging usually happens within the first month or so after EVAR to confirm the stent graft is sealed, then at intervals set by the team. Open repair patients have a clinic review to check the wound and general recovery. If something feels wrong before those appointments, the surgical team, not the calendar, decides what happens next.

Living under surveillance: the years before any decision

For most people with a newly found aneurysm, surgery is years away or never arrives. The time in between is where a great deal of the real medicine happens, and it is unglamorous: appointments, scans and habits.

Smoking sits at the top of every guideline’s list. Tobacco damages the elastic fibers of the aortic wall, and current smokers’ aneurysms grow faster and rupture more often than those of people who have quit. Stopping is the single most effective thing a person under surveillance can do, and clinicians can offer structured support.

Blood pressure is next. High pressure means more force on a wall that is already thinning. Most people with an aneurysm are prescribed medicines to keep pressure in a healthy range; several classes are used, and in people with Marfan syndrome and related conditions, beta blockers and angiotensin receptor blockers have been studied specifically for their effect on aortic growth. Any decision to start, adjust or stop such a medicine belongs to the prescribing clinician.

Because aneurysm disease shares its roots with atherosclerosis, the fatty hardening of arteries, teams also look at cholesterol and often prescribe a statin, not to shrink the aneurysm but to lower the overall risk of heart attack and stroke, which is high in this group. The American Heart Association emphasizes that people with aortic disease benefit from the same cardiovascular risk management as those with coronary disease.

Exercise is generally encouraged rather than forbidden. Moderate aerobic activity, walking, cycling, swimming, is considered safe and beneficial for most people with small and medium aneurysms. Very heavy lifting or straining, which spikes blood pressure sharply, is usually discouraged, and specific limits should come from your own team.

The final piece is simply turning up. Surveillance works only if the scans happen. Missing a three-monthly check on a 5.2 cm aneurysm is not a small omission.

How long can you have an aortic aneurysm before it ruptures?

This is among the most searched questions on the topic, and the honest answer is that there is no timer. Many people live with a small aneurysm for the rest of their lives and never have a rupture. Others carry one for decades before it slowly reaches a size where repair is discussed. A minority experience rapid growth and reach that point within a few years. The trajectory is individual, which is the entire reason for scheduled imaging.

What the evidence does support is a strong link between diameter and risk. Below 4 cm, rupture in any given year is uncommon. Between 4 and 5.4 cm it is still low, which is why the randomized trials found no benefit from early repair. Above 5.5 cm the annual risk climbs steeply, and above 6 or 7 cm it becomes substantial enough that most guidelines consider repair urgent in anyone fit to undergo it. Growth rate and smoking status push the curve upward at any size.

Rupture itself is a catastrophe rather than a warning. The NHS estimates that around 8 in 10 people with a ruptured abdominal aortic aneurysm die before reaching hospital or do not survive emergency surgery. That statistic is not offered to frighten but to explain why the whole system, screening, surveillance thresholds and elective repair, exists: to intervene before the wall gives way, at a time when the operation can be planned and the person prepared.

A related question, whether an aneurysm can shrink or disappear, has a simpler answer. Once the aortic wall has stretched, it does not return to normal on its own. Good blood pressure control and stopping smoking can slow or stall growth, and after successful endovascular repair the sealed sac often shrinks over time. But an untreated aneurysm does not resolve, which is why it needs watching rather than hoping.

What people often get wrong about aneurysm surgery

Some misunderstandings come up in nearly every clinic. Correcting them tends to make the waiting easier and the decisions clearer.

“Any aneurysm should be fixed as soon as it is found.” The evidence points the other way for small and medium aneurysms. Trials comparing early repair with surveillance found no advantage in operating early, because surgery carries its own risk. Waiting is not neglect; it is the tested strategy.

“If I feel fine, it must be fine.” Aneurysms are silent until they are large or leaking. Feeling well says nothing about diameter. Only the scan does.

“Keyhole repair is always better.” EVAR is easier to recover from, but it requires suitable anatomy, lifelong imaging and carries a higher chance of needing a further procedure. For some people, particularly younger and fitter ones, open repair remains a well-supported choice. Neither is universally superior.

“Once it is repaired, I am done.” After EVAR especially, scheduled scans continue indefinitely. And the underlying tendency toward arterial disease remains, so blood pressure, cholesterol and smoking still need attention.

“There will be warning signs days before a rupture.” Sometimes a contained leak causes pain for hours or a day or two before a full rupture, but many ruptures occur with no prior symptoms at all. Relying on a warning is not a plan.

“Exercise will make it burst.” Moderate activity is safe and encouraged for most people under surveillance. Sudden, very heavy straining is the concern, not a brisk walk.

“A medicine can make it go away.” No drug has been shown to shrink an established aneurysm. Medicines lower the pressure and inflammation acting on the wall and reduce heart attack and stroke risk, which is valuable in itself, but they do not replace surveillance or repair when it is indicated.

Questions to ask your care team

A vascular clinic appointment moves quickly, and it is easy to leave with the measurement but without the meaning. Writing questions down beforehand helps, and so does bringing someone to listen. The following cover the ground most people later wish they had asked.

• Exactly how large is my aneurysm now, and how does that compare with the last scan? Ask for the number and the imaging method, since ultrasound and CT can differ.
• Where is it: abdominal, thoracic, or both? Does its shape or position change the usual thresholds?
• What size, growth rate or symptom would prompt you to recommend repair in my case, and why?
• How often will I be scanned, and who contacts whom if a scan is missed or shows a change?
• What is my personal risk of rupture over the next year, as best you can estimate it, and how does that compare with the risk of surgery for someone with my health?
• Are there heart, lung or kidney issues you would want assessed or treated before any operation?
• Would I be a candidate for endovascular repair, open repair, or both? What in my anatomy drives that?
• If I have endovascular repair, what does the long-term scan schedule look like, and what happens if a leak is found?
• Which of my current medicines matter for the aneurysm, and is there anything about my blood pressure or cholesterol you would want to change?
• What activities should I avoid, and which are safe or beneficial?
• Should my siblings or children be screened, given my diagnosis?
• What symptoms should make me call the clinic, and what should make me call emergency services instead?

None of these questions has a universal answer. That is the point. They turn a general threshold into a plan for one person, which is the only kind of plan that matters.

When to call your doctor: warning signs of aortic aneurysm rupture and other red flags

Two levels of urgency apply, and knowing the difference matters.

Call emergency services immediately if you have a known or suspected aneurysm and experience any of the following, which can indicate rupture or dissection:

• Sudden, severe pain in the abdomen, lower back or chest, often described as tearing, ripping or the worst pain ever felt, sometimes spreading to the groin, legs or between the shoulder blades.
• Feeling faint, dizzy or collapsing, particularly alongside pain.
• Cold, clammy or pale skin, a racing heartbeat, or shortness of breath.
• Sudden weakness, numbness or difficulty speaking, which with chest pain may signal a dissection affecting blood flow to the brain.

Do not drive yourself and do not wait to see whether it passes. The NHS is explicit that a ruptured aneurysm is a medical emergency in which minutes matter.

Contact your care team promptly, the same day where possible, if you notice:

• New, persistent aching in the back, abdomen or flank that does not change with position and has no obvious cause.
• A new pulsating sensation in the abdomen, or tenderness when pressing on it.
• After repair: fever, a wound that becomes red, swollen or leaks fluid, a groin lump that grows, a leg that turns pale, cold or painful, or a marked drop in how much urine you pass.
• New hoarseness, difficulty swallowing or a persistent cough if you have a thoracic aneurysm.

Also let the team know if a scheduled scan has been missed for any reason, if you are due for another operation of any kind, or if a close relative is diagnosed with aortic disease. Surveillance depends on information flowing in both directions.

If in doubt, call. A vascular team would far rather hear about a symptom that turns out to be muscular than miss the one that is not.

Frequently asked questions

At what size does an aortic aneurysm require surgery?

For an abdominal aortic aneurysm, repair is usually discussed once the diameter reaches about 5.5 cm, according to the NHS and the Mayo Clinic. Some teams consider a lower threshold, around 5.0 cm, for women and for people with inherited aortic conditions. Thoracic aneurysms have their own thresholds. Size is one factor among several, and the decision rests with your treating team.

How long can you have an aortic aneurysm before it ruptures?

There is no fixed timeline. Many small aneurysms never rupture, and people live with them for decades under surveillance. Risk rises sharply with diameter, growth rate and smoking, which is why aneurysms above about 5.5 cm are usually repaired electively rather than watched. Scheduled scans exist precisely because the trajectory is different for every person.

What are the odds of surviving aortic aneurysm surgery?

Planned repair carries a real but generally low risk, and that risk depends heavily on age, heart and lung health, kidney function and the type of operation. Emergency surgery for a ruptured aneurysm is far riskier; the NHS estimates around 8 in 10 ruptures are fatal. Your surgical team can give you a personal estimate based on your own health, which is more meaningful than any general figure.

Are there warning signs days before an aortic aneurysm ruptures?

Not reliably. Some people have hours or a day or two of persistent abdominal or back pain from a contained leak before a full rupture, but many ruptures occur with no warning at all. That is why surveillance and timely elective repair are the strategy, rather than waiting for symptoms. Any new, persistent pain in someone with a known aneurysm warrants same-day medical advice.

How fast do aortic aneurysms grow?

Most abdominal aneurysms enlarge slowly, by a few millimeters per year, though larger aneurysms and those in current smokers tend to grow faster. Growth of more than 1 cm in a year is considered rapid and can prompt a recommendation for repair even below the usual size threshold. Repeat scans are timed to catch any acceleration.

What is the typical aortic aneurysm surgery recovery time?

After endovascular repair the NHS describes a hospital stay of a few days and a return to normal activities over a few weeks. After open repair the stay is around a week or longer and full recovery often takes several months. These are typical ranges rather than guarantees; individual fitness and any complications change them.

Can medication stop an aortic aneurysm from growing?

No medicine has been shown to shrink an established aneurysm. Blood pressure medicines reduce the force on the aortic wall and may slow growth, and in inherited conditions such as Marfan syndrome, beta blockers and angiotensin receptor blockers have been studied specifically for this. Statins are often prescribed to lower overall heart attack and stroke risk. Any change to medicines is a decision for the prescribing clinician.

Is it safe to exercise with an aortic aneurysm?

For most people with a small or medium aneurysm, moderate aerobic activity such as walking, swimming or cycling is considered safe and beneficial. Very heavy lifting or intense straining, which causes sharp spikes in blood pressure, is usually discouraged. Because anatomy and aneurysm size vary, ask your own team for specific limits rather than relying on general advice.

Do women need aortic aneurysm surgery at a smaller size?

Possibly. Women have narrower aortas on average, and observational data suggest their aneurysms rupture at smaller diameters than men’s. Guidelines increasingly discuss a lower threshold, and many vascular teams treat around 5.0 cm as a point for serious consideration in women. The final judgment depends on body size, growth rate and overall health.

Why do I need scans for life after endovascular repair?

The stent graft seals the aneurysm from the inside but leaves the weakened sac in place. Blood can occasionally leak around or through the device, a problem called an endoleak, and the graft can shift over time. Scheduled imaging detects these early, when they can be addressed with a further procedure if needed. Skipping follow-up removes much of the protection the repair was meant to provide.

References

• NHS – Abdominal aortic aneurysm
• NHS – Abdominal aortic aneurysm screening
• MedlinePlus – Aortic Aneurysm

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.