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Arteriovenous Malformation Surgery

An arteriovenous malformation (AVM) is an abnormal tangle of blood vessels connecting arteries and veins in the brain or other parts of the body. Normally, arteries carry oxygenated blood away from the heart to various tissues, and veins carry deoxygenated blood back to the heart. In an AVM, the typical network of capillaries between arteries and veins is missing, and the direct connection between arteries and veins can result in abnormal blood flow and pressure.


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What Causes AVMs?

The exact cause of AVMs is often unknown. They are considered to be congenital, meaning they are present at birth. Genetic factors may play a role in their development.

What are the Symptoms of AVMs?

Symptoms can vary widely but may include headaches, seizures, difficulty speaking or understanding speech, weakness or numbness, and, in severe cases, loss of consciousness.

How are AVMs Diagnosed?

AVMs are often diagnosed through imaging studies such as angiography, MRI (Magnetic Resonance Imaging), or CT (Computed Tomography) scans. These tests help visualize the abnormal blood vessels and assess the size and location of the AVM.

What is Embolization in AVM Treatment?

Embolization is a procedure in which a catheter is used to deliver substances, such as glue or coils, to block or reduce blood flow within the abnormal blood vessels of the AVM. It may be used as a standalone treatment or in combination with other approaches.

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