Can Brain Stroke Be Treated Without Open Surgery?

Yes. Mechanical thrombectomy removes brain clots through a catheter threaded from the groin — no open brain surgery needed. It is the most effective treatment for large-vessel stroke and can reverse paralysis even hours after onset.

What Happens During a Stroke?

A stroke occurs when an artery supplying blood to the brain gets blocked by a clot. The part of the brain fed by that artery is starved of oxygen and glucose. Brain cells begin dying within minutes. The longer the blockage persists, the more brain tissue is permanently lost — leading to paralysis, speech loss, vision problems, or death. Nearly 2 million brain cells die every minute during a stroke.

The Golden Hour — Time Is Brain

In stroke treatment, every minute matters. The phrase "time is brain" captures a critical reality: the sooner blood flow is restored, the more brain tissue can be saved. Clot-dissolving medication (IV thrombolysis) can be given within 4.5 hours of symptom onset, but it only dissolves the clot in about 30–40% of large-vessel strokes. For large clots blocking major brain arteries, mechanical thrombectomy is far more effective — and the treatment window can extend up to 24 hours in selected patients with salvageable brain tissue on imaging.

How Mechanical Thrombectomy Works

Dr. Rohit Agarwal performs thrombectomy through a small puncture in the groin artery. A catheter is navigated through the blood vessels up into the blocked brain artery under live X-ray guidance. A stent-retriever device or aspiration catheter is deployed at the site of the clot. The clot is physically captured and pulled out of the artery, or suctioned out — instantly restoring blood flow to the starving brain tissue. The procedure typically takes 30–60 minutes, and in many cases the patient begins recovering neurological function on the procedure table itself.

Results — Dr. Rohit Agarwal's Experience

At Medanta Lucknow — home to the first comprehensive stroke unit in Uttar Pradesh — Dr. Rohit Agarwal has performed over 150 mechanical thrombectomies with a 90% recanalization (clot removal) rate. His patients have ranged from a 17-year-old teenager to a 98-year-old, demonstrating that the procedure can be performed safely across all age groups. Medanta Lucknow was also the first centre in UP to use the Penumbra Flash 16 aspiration system — the latest generation clot-removal technology that allows faster and more complete clot extraction.