What is a flow-diverter stent?
A flow diverter is a flexible, tightly woven mesh tube placed inside the parent artery, across the neck of the aneurysm. Unlike coiling, nothing is placed inside the aneurysm itself.
Stroke & Neurointervention
Flow-Diverter Treatment
A fine mesh stent that redirects blood flow away from a selected brain aneurysm. Flow diversion is not suitable for every aneurysm and needs careful planning.
How a flow diverter changes blood flow
The dense mesh slows blood flow into the aneurysm and guides it along the normal artery. Over the following weeks to months, the blood inside the aneurysm gradually clots and the artery wall heals over the stent, so the aneurysm is closed off. The effect is gradual, not immediate.
Clip · 20sAneurysm flow diversion
What flow diversion is, what to expect from the procedure, recovery and possible complications.
Which aneurysms may be considered?
Flow diversion may be considered for selected unruptured aneurysms, such as large or wide-necked aneurysms and some that are difficult to treat with coiling alone. It is not suitable for every aneurysm, and it is generally not the first choice for a recently ruptured aneurysm.
Assessment and treatment planning
Planning uses detailed imaging, usually DSA, to measure the aneurysm and the artery. The team also reviews the patient’s health, bleeding risk and ability to take antiplatelet medicines reliably.
Procedure overview
The procedure is usually done under general anaesthesia. Catheters are guided from an artery at the groin or wrist to the brain, and the stent is opened across the aneurysm neck under X-ray guidance.
Antiplatelet medication
Antiplatelet medicines prevent clots from forming on the stent. They are usually started before the procedure and continued afterwards, often two medicines for several months and then one for longer, as advised by the treating team.
Taking these medicines exactly as prescribed is very important. Do not stop or change them without speaking to the treating team, including before any other surgery or dental work.
Potential risks and limitations
- Stroke from a clot forming on the stent or blocking a small branch artery
- Bleeding, including from the aneurysm or because of the antiplatelet medicines
- Problems at the access site
- The aneurysm may close slowly or not completely, and further treatment may be needed
Follow-up imaging and longer-term care
Follow-up imaging, often DSA or MRA, is done at intervals to confirm the aneurysm is closing and the artery remains open. Medicines are adjusted at follow-up visits.
FAQs
Frequently asked questions
Is a flow diverter better than coiling?
Neither is better for every aneurysm. Each suits different aneurysm types, and the choice is made individually.
How long do I need antiplatelet medicines?
Usually for months, and often one medicine for longer. Your treating team will advise the exact plan; do not stop without asking.
Is the aneurysm closed straight after the procedure?
No. A flow diverter works gradually over weeks to months, which is why follow-up imaging is needed.
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Book an aneurysm consultation
Consultations are at KIMS Hospitals (New Facility), Kondapur, Hyderabad. Bring your CT, MRI or angiography reports and images. A sudden, severe headache is an emergency: call 108 or go to the nearest emergency department.
Request appointment
Choose a day from Monday to Saturday. The clinic calls back to confirm your time.
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