Aneurysm Coiling Complex
Complex Aneurysm Coiling is an advanced endovascular neurosurgical procedure that fills or diverts blood flow from a complex, wide-necked, or large cerebral aneurysm using platinum coils, stent-assisted coiling, or flow diverter devices — permanently excluding the aneurysm from the circulation without open-brain surgery.
Overview
Complex Aneurysm Coiling is indicated for cerebral aneurysms with challenging anatomy — including wide necks, large or giant size, fusiform morphology, or unfavourable location for surgical clipping — that require advanced endovascular techniques beyond standard coiling. Under general anaesthesia, a microcatheter is navigated from the femoral artery through the aorta and into the cerebral circulation under continuous fluoroscopic guidance, and platinum coils are packed densely within the aneurysm sac, or a flow diverter stent is deployed in the parent artery to redirect blood flow away from the aneurysm and promote thrombosis. These advanced techniques have dramatically expanded the range of aneurysms treatable without open-brain surgery.
Types of Complex Aneurysm Treatment
Complex aneurysm treatment encompasses several advanced endovascular approaches, each selected based on specific aneurysm characteristics identified on pre-operative DSA and 3D angiographic imaging.
- Stent-Assisted Coiling (stent across the neck supports coils in wide-necked aneurysms)
- Balloon-Assisted Coiling (balloon temporarily inflated at neck during coil deployment)
- Flow Diverter Implantation (pipeline embolisation device redirects flow from giant aneurysms)
- Intrasaccular Flow Disruptor (Woven EndoBridge device for wide-necked bifurcation aneurysms)
- Combined Surgical and Endovascular Treatment (hybrid approach for complex cases)
Risk Factors for Cerebral Aneurysm
Identifying and managing the risk factors for cerebral aneurysm formation, growth, and rupture is essential for long-term neurovascular health alongside procedural treatment.
- Hypertension — the single most important and modifiable risk factor for aneurysm rupture
- Smoking significantly increasing the risk of aneurysm formation, growth, and rupture
- Family history of intracranial aneurysm or subarachnoid haemorrhage in first-degree relatives
- Polycystic kidney disease associated with significantly higher intracranial aneurysm prevalence
- Female sex — women have a higher risk of aneurysm rupture, particularly after menopause
- Previous aneurysm rupture significantly increasing the risk of rupture from other aneurysms
Cerebral Aneurysm Symptoms
Complex aneurysms may present with mass effect symptoms or incidentally on imaging, or dramatically with subarachnoid haemorrhage. Both presentations require urgent specialist evaluation.
- Thunderclap headache — the sudden, excruciating worst headache of the patient's life
- Neck stiffness and photophobia following subarachnoid haemorrhage
- Diplopia or ptosis from mass effect on cranial nerves from large or giant unruptured aneurysms
- Sudden loss of consciousness at onset of haemorrhage in up to 40% of cases
- Visual field defect from large ophthalmic or carotid aneurysm compressing the optic structures
- Pulsatile tinnitus or facial pain from large posterior circulation aneurysms
- Seizures in patients with perianeurysmal haematoma after rupture
- Incidental discovery on MRA or CT angiogram performed for another indication
Key Benefits
Discover the advantages of choosing our aneurysm coiling complex services.
Permanently excludes a complex aneurysm from the circulation without open-brain surgery
Avoids craniotomy and its associated brain manipulation and surgical recovery
Immediate DSA confirmation of occlusion provides reassurance before ICU transfer
Single definitive procedure eliminating the rupture or re-bleed risk from the aneurysm
Performed by a specialist neurointerventional team with advanced complex device expertise
Clinical Features
The technology, techniques and clinical approach behind our aneurysm coiling complex.
Advanced 3D rotational DSA guides precise endovascular device selection and deployment
Stent, balloon, flow diverter, or intrasaccular device available for wide-necked complex anatomy
Dual antiplatelet pre-treatment protects against in-stent thrombosis for stent-assisted cases
Immediate post-procedure DSA confirms complete aneurysm occlusion before theatre departure
Neurovascular ICU monitoring for 24 to 48 hours after complex device deployment
Preparation Instructions
After Complex Aneurysm Coiling, take all prescribed dual antiplatelet medications without missing a single dose — stopping these early after stenting dramatically increases the risk of in-stent thrombosis and stroke. Attend follow-up DSA or MR angiography at 6 months and 1 year to confirm complete aneurysm occlusion and exclude recanalization. Control blood pressure rigorously and stop smoking permanently as these are the two most important steps in preventing aneurysm recurrence. Contact your neurovascular team immediately for sudden severe headache, new neurological symptoms, or fever.
The Procedure
Step-by-step guide to what you can expect during your aneurysm coiling complex procedure.
Neurovascular Team Planning
Your neurointerventional specialist reviews the DSA and 3D rotational angiographic images to characterise the aneurysm's wide neck, large size, or complex morphology and selects the most appropriate advanced endovascular technique for permanent safe exclusion from the circulation.
General Anaesthesia and Arterial Access
General anaesthesia is administered and the right femoral artery is accessed under ultrasound guidance. A long sheath is advanced to the aortic arch and guide catheters are positioned in the target cerebral artery under fluoroscopic roadmap guidance.
Microcatheter Navigation to the Aneurysm
A microcatheter is steered through the tortuous cerebral vasculature directly into the aneurysm under continuous roadmap fluoroscopic guidance. A second microcatheter may be placed for the balloon or stent adjunct required for wide-necked aneurysm treatment.
Advanced Device Deployment
The chosen device — stent-assisted coil pack, flow diverter, or intrasaccular disruptor — is precisely deployed under continuous fluoroscopic and roadmap imaging. Each component is confirmed in optimal position before permanent release.
DSA Confirmation of Occlusion
Immediate post-procedure digital subtraction angiography confirms complete aneurysm occlusion, unobstructed parent artery flow, and patency of all branch vessels arising near the treatment site — the definitive confirmation of procedural success.
Neurovascular ICU Recovery
You recover in the neurovascular ICU for 24 to 48 hours with neurological monitoring. Most patients are discharged within 3 to 5 days feeling well with access site managed with firm pressure dressing.
What to Expect
Complex Aneurysm Coiling is performed under general anaesthesia and takes 2 to 4 hours depending on aneurysm anatomy and the technique required. A catheter is guided from the femoral artery to the cerebral circulation and the chosen device — coils, stent, or flow diverter — is deployed under continuous fluoroscopic and roadmap guidance with immediate DSA confirmation of the treatment result. You recover in the neurovascular ICU for 24 to 48 hours and most patients are discharged home within 3 to 5 days feeling well with a significant improvement in any pre-operative symptoms.
Frequently Asked Questions
Common questions about aneurysm coiling complex.
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Spinal Cord Fixation Two Level
Decompressive Craniotomy/SDH/EDH/ICH
Lumbar Laminectomy/ Discectomy Two Level
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