Question 1

How does a GP, neurologist or neurosurgeon know when to refer a patient to a neurointerventionist?

Dr. Tariq Matin · Accepted Answer

We need awareness at every level, not just among medical professionals but in the community, about the FAST acronym — facial drooping, arm weakness, speech disturbance, all occurring suddenly, and time. Any sudden neurological deficit, sudden severe headache, or sudden seizure requires urgent neuroimaging and immediate transfer to a centre with neuro care capability. A CT or MRI is mandatory, because you cannot distinguish an ischemic stroke from a haemorrhagic one clinically — the imaging is what tells you whether neurointervention is needed.

Question 2

What is the window of opportunity for intervention, particularly for cross-border cases where travel is involved?

Dr. Tariq Matin · Accepted Answer

There are two distinct subsets. In the acute subset, the stroke is actively evolving and intervention has to happen locally — the thrombolytic drug window is 4.5 hours, and mechanical thrombectomy is 6 hours in all cases, extending to 24 hours in selected imaging-positive cases. Acute stroke care has to be developed in and around the patient's own locality; it can't depend on a distant specialist centre. The second subset is secondary prevention, where the stroke has already happened, the cause has been identified, and we're addressing it to prevent a future event. Those are the patients who can make a calculated decision to travel — most of our overseas patients fall into this category.

Question 3

In haemorrhagic stroke, after intervention, to what degree do symptoms reverse?

Dr. Tariq Matin · Accepted Answer

In haemorrhagic stroke, neurons aren't 100% dead — there's cytotoxic oedema, but if we can remove the blood and relieve the pressure on the brain, neurons can recover function. Our primary goal is to save the patient's life first; the first week to ten days after the bleed is life-threatening, so all effort goes into preventing death and disability, and neurological recovery happens over time through rehabilitation. That's different from ischemic stroke, where we're reversing the deficit on the table itself — rescuing neurons at the brink of death and restoring function immediately.

Question 4

When evaluating an intracranial haematoma that needs evacuation, is it done manually or with robotic or stereotactic guidance?

Dr. Tariq Matin · Accepted Answer

Not all intracranial haemorrhages require surgical evacuation — most are managed medically. When the bleed is causing raised intracranial pressure, because the brain is inside a closed skull and any extra volume risks herniation, we have to evacuate it. There are several techniques — minimally invasive surgery, stereotactic drainage, or open decompressive surgery — and that's the neurosurgeon's domain. Our endovascular role is in identifying and occluding the underlying vascular cause, the aneurysm or AVM, that caused the bleed in the first place.

Question 5

How do you gain access to occluded vessels in the deeper structures of the brain?

Dr. Tariq Matin · Accepted Answer

Think of it like a blocked drainage system under a city. A surgeon's approach is to dig down from outside to reach the blockage. Our approach is to enter the drainage system from where it begins and navigate a map through the system to the blockage, clearing it from within — you don't have to dig the ground. Access is through a needle puncture in the groin or wrist, and from there the catheters track through the blood vessels all the way to the brain.

Question 6

How do you manage older patients?

Dr. Tariq Matin · Accepted Answer

Age is not a criterion for us. We have treated patients in their 90s and even at 100 years of age and seen them recover. Age alone is never a reason to withhold intervention.

Question 7

What are the risk factors for developing aneurysms?

Dr. Tariq Matin · Accepted Answer

The key risk factors are hypertension and smoking. Blood hits the vessel wall repeatedly, the wall weakens and bulges into an aneurysm, and the body tries to repair itself — but if blood pressure is chronically elevated, or tobacco smoke is weakening the vessel wall, or there's an underlying genetic factor causing weak collagen, that repair mechanism gets overwhelmed and the aneurysm develops over time. This is different from AVMs, which are congenital and present from birth — aneurysms are acquired lesions that develop over a lifetime.

Question 8

What is severe carotid stenosis?

Dr. Tariq Matin · Accepted Answer

We're usually talking about narrowing at the carotid bifurcation in the neck, where the common carotid artery splits into the external carotid, supplying the face, and the internal carotid, supplying the brain. Stenosis of 50% or more on catheter angiography, or 60% or more on non-invasive imaging like CT or MR angiography, is considered significant and needs treatment. When we say severe stenosis, we mean 70% to 99% narrowing.

Question 9

How do you decide between coiling, stent-assisted coiling, flow diversion, and surgical clipping for an aneurysm?

Dr. Tariq Matin · Accepted Answer

We work as a multidisciplinary team with a very respectful relationship with our neurosurgical colleagues. For aneurysms where both approaches are feasible, endovascular coiling is preferred under current guidelines, but we don't impose that on patients. We hold a multidisciplinary meeting, review the morphology together, discuss which endovascular option — coil, stent-assisted coil, or flow diversion — is most appropriate, and then meet the patient's family and explain the complexity, risk, and cost of each option in full so they can make an informed decision.

Role of Neuro Intervention

Questions Doctors Asked Dr. Tariq Matin