Brain Aneurysm: An aneurysm occurs when the wall of an artery weakens. When this occurs, blood pushes on the thinned spot of the wall, causing that part of the arterial wall to swell out like a balloon. The more the wall swells, the thinner it becomes. If left untreated, the wall of the artery will become thinner and may burst. Meet an aneurysm patient and hear from highly-regarded specialists about treatment options for aneurysms, a potentially deadly brain condition. A Live webcast from the HealthEast Neurovascular Institute at St. Joseph's Hospital in St. Paul, Minnesota is scheduled for Tuesday, August 1 at 4:00 pm central time zone via the Internet at www.or-live.com.