How Do Avm Rupture Happen?

An AVM rupture occurs because of pressure and damage to the blood vessel. This allows blood to leak (hemorrhage) into the brain or surrounding tissues and reduces blood flow to the brain. Cerebral AVMs are rare. Although the condition is present at birth, symptoms may occur at any age.

Can stress cause an AVM to rupture?

Even many nonsymptomatic AVMs show evidence of past bleeding. But massive hemorrhages can occur if the physical stresses caused by extremely high blood pressure, rapid blood flow rates, and vessel wall weakness are great enough.

Can you survive an AVM rupture?

Prognosis. The prognosis of an AVM depends on several factors, beginning with whether the AVM is discovered before or after bleeding. More than 90% of those who bleed survive the event.