Mechanical Thrombectomy

Key Points

Mechanical thrombectomy is a highly effective treatment for certain ischemic strokes caused by large clots in the brain.
It is a minimally invasive procedure that removes a clot using a catheter and specialized tools.
When done quickly, ideally within 6 to 24 hours of stroke symptoms, it can drastically improve recovery and reduce long-term disability.
The procedure is safe and well-tolerated, with a low risk of complications in experienced hands.
Early recognition of stroke symptoms and fast medical care are critical. Call 911 immediately if stroke is suspected.

Overview

What Is Mechanical Thrombectomy?

Mechanical thrombectomy is a life-saving, minimally invasive procedure used to remove a blood clot from a blocked artery in the brain. It is performed during an ischemic stroke - the most common type of stroke - when a clot cuts off blood flow to part of the brain.

Using specialized tools and advanced imaging, a stroke specialist threads a catheter through an artery (usually in the groin or wrist) to the brain to physically remove the clot and restore blood flow. This procedure can significantly reduce stroke-related disability when done quickly and by a trained team.

Why Is It Done?

Mechanical thrombectomy is done to:

Restore blood flow to the brain as quickly as possible
Reduce brain damage caused by a large vessel occlusion (LVO)
Improve recovery outcomes and reduce the risk of long-term disability

It is typically used for patients who:

Are experiencing an acute ischemic stroke
Have a large vessel blockage in the brain
Arrive at the hospital within up to 24 hours of symptom onset, depending on imaging results

It is often done in combination with intravenous (IV) clot-busting medications (thrombolytics) when appropriate.

What to Expect

Before the Procedure

A stroke team will perform brain imaging (CT or MRI scans) to confirm the location and type of stroke.
You may receive a clot-dissolving medication (thrombolytics) if you qualify and it’s within the treatment window.
The medical team will explain the procedure and answer any questions, and a consent form will be signed.

During the Procedure

You’ll be moved to a specialized suite (neurovascular lab).
A catheter is inserted through a small incision, typically in your groin or wrist.
Using real-time X-ray imaging, the catheter is guided through the blood vessels to the brain.
A stent retriever or aspiration device is used to grab and remove the clot.
Blood flow is restored to the affected area of the brain.

The procedure typically lasts 30 to 90 minutes, and you may be sedated or under general anesthesia depending on your condition.

After the Procedure

You will be monitored closely in an intensive care unit (ICU) or stroke unit for any signs of bleeding, changes in brain function, or complications.
Most patients will undergo rehabilitation therapy to help regain strength, mobility, and speech depending on the area of the brain affected.