Neurovascular & Stroke Institute offers world-class surgeons and facilities to treat complex vascular disorders of the brain and spine.


Evaluating the risk for stroke is based on heredity, natural processes, and lifestyle.


Face ... Facial droop, uneven smile?
Arms ... Arm numbness, weakness?
Speech ... Slurred speech, difficulty talking?
Time ... Call 911

Endovascular embolization using Onyx

During Surgery

Once you are comfortably settled in the endovascular suite and pre-operative procedures are complete, your surgeon will make an incision in your groin after using a local anesthetic to numb the area. Patients will receive general anesthesia for embolizatlon. Therefore, a tube will be placed in your lungs to assist with breathing.

A small flexible tube (micro catheter) will be inserted through the incision in your groin into an artery. Your doctor will carefully guide the catheter up to the point where the AVM occurs. Live x-rays (fluoroscopy) will be used throughout the procedure to assist the doctor in guiding the catheter.

When the catheter is in place your doctor will send a putty-like substance (Onyx) through the catheter and fill the aneurysm, sealing off the abnormal blood vessel. The procedure may take several hours to allow for the precise placement of the materials.

Post Surgery

After surgery, your doctor will require you to stay in the hospital at least one night so you can be monitored for any signs of bleeding, stroke, or poor blood flow to your brain. However, you should be able to eat within three to six hours after surgery.

In general, following endovascular surgery you can expect to have a one-half inch nick in the groin, which may be tender to the touch. Clean the area with hydrogen peroxide or antibacterial soap daily and leave the wound open to air. No soaking in salt water, pool or tub for 14 days, however showering is allowed after 24 hours. Your doctor will discuss when you can reintroduce physical activity into your daily regime. Most patients will have a one to two week recovery period at home as well.

Follow up care

You will be given specific instructions for medication and follow up based on whether or not you were treated for a ruptured or unruptured AVM. You will schedule a follow up visit with your doctor after discharge.