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Brain arteriovenous Fistula

What is a dural arteriovenous fistula (DAVF)?

Brain arteriovenous fistula treatment in Guntur is when an abnormal connection of vessels in the tissues around the brain or spinal cord in which one or more arteries are directly connected to one or more veins.

The most serious problem associated with DAVFs is that they transfer high-pressure arterial blood into the low pressure veins that drain blood from the brain or spinal cord.

This results in an increase in the pressure of the venous system around the brain or spinal cord which gives rise to many problems.

What are the symptoms of arteriovenous fistula (DAVF)?

Patients with dural AVFs or brain fistula treatment in Guntur typically present with a rumbling noise in one ear that follows the heartbeat

Here, the patient can actually hear blood flow in a fistula located just behind their ear as a characteristic whooshing to-and-fro sound that is always in rhythm with the heartbeat – is called “tinnitus”.

Sometimes fistulas can form in a large venous structure behind the eye called “cavernous sinus” which is connected to the veins that serve the eye.

When this happens, the eye can get large and red and painful.

Perhaps, the worst type of fistula is one that at first produces no symptoms at all.

Because the fistula is located on the covering of the brain (the dura), the blood going through the fistula usually empties into the same veins that are normally used by the brain.

This interferes with normal venous drainage of the brain, producing various types of brain dysfunction, such as seizures or strokes.

What is the cause of Brain arteriovenous fistulas?

The reason brain dural fistulas needing brain fistula surgery by our best neurosurgeons in Guntur form is usually unclear.

Sometimes, a patient has clear history of significant trauma or infection or surgery in the area which later develops a fistula.

What is the treatment of Brain dural arteriovenous fistula (DAVF) ?

The purpose of the treatment is to close the fistula.

Catheter embolization is a procedure similar to an angiogram. Through these catheters, different agents such as metal coils, plastic particles, glue-like substances, and occasionally stents or other devices are delivered to close the fistula.

Some dural fistulas can be observed conservatively, depending on factors such as size, location, and overall patient condition.

Sometimes, catheter embolization is not possible for various reasons. In these cases, a highly precise form of radiation treatment (usually gamma-knife) can be used to target and close the fistula.

Radiation treatments take time to work (months to years) but can be remarkably effective at safely and effectively closing very complicated fistulas for which no other treatment exists.

Finally, in some select, complex cases, fistulas require an open surgical procedure – either to directly close the fistula or to facilitate access to it through catheters when getting there through arteries or veins in the legs and other places is not anatomically possible.

The details of any treatment are best discussed with the specialist performing the procedure.

What is the prognosis?

  1. The prognosis depends on symptoms and degree of dysfunction.
  2. Pulsatile tinnitus that is caused by the fistula is permanently cured by closing the fistula.
  3. Eye problems are usually completely cured or made much better.
  4. Seizures often stop or markedly improve.
  5. Strokes already caused by the fistula cannot be cured, but new dysfunction can be prevented.
  6. Ultimately, prognosis is established individually based on the kind of fistula the patient has.


This publication is designed to help educate patients about some of the common Neurovascular disease processes and their management. This publication is designed also to complement the knowledge of the disease condition in addition to the discussion and counseling held with the doctor. This is not to be taken as a standalone source of knowledge. There are various other diseases related to Brain’s blood vessels that we specialize in treating and are beyond the scope of this succinct patient education material.

Some of the other conditions that we treat at Life Neurovascular Institute for best interventional neurology in Guntur are

  1. Carotid Cavernous Fistulas
  2. Refractory nose bleeding
  3. Subclavian artery stenting for subclavian steal syndromes
  4. Tumor embolization
  5. Retinoblastoma
  6. Vertebral artery stenting
  7. Venous stenting
  8. Subdural hematoma and others