Risks with AVMs

Risks with AVMs

The greatest potential risk to someone with an AVM is bleeding in the brain. Because the blood vessels in an AVM are abnormal, they may leak or rupture.

When high pressure causes an AVM to rupture, a large, rapid accumulation of blood – called a hemorrhage – can occur. About 2 to 4 percent of all AVMs each year result in hemorrhages.

Hemorrhaging from a ruptured AVM can cause stroke-like symptoms or a fatal stroke. Young people between the ages of 15 and 20 who are diagnosed with AVMs are at the highest risk of hemorrhaging.

At the Swedish Neuroscience Institute, patients with an AVM are carefully monitored for any signs that may indicate an increased risk of hemorrhage. If the hemorrhage is large, the AVM needs to be removed immediately.

After receiving treatment for AVMs, a risk of hemorrhage remains until the AVM is completely gone.

Contact Information

Swedish Cerebrovascular Center
550 17th Avenue
Suite 110
Seattle, WA 98122
Phone: 206-320-3470
Fax: 206-320-3471
Map & Directions

Video Library

Patient Education: Brain Aneurysms

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What Is a Cerebral Aneurysm?

What Causes Cerebral Aneurysms?

Warning Signs and Symptoms of Aneurysms

What Are Aneurysm Treatments?

What Is Aneurysm Clipping?

What Is Aneurysm Coiling?

The Advantages of Choosing Swedish to Treat Aneurysms


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