An aneurysm is a weak area in the wall of a blood vessel that bulges or balloons out. Once it reaches a certain size, it has a high risk of bursting. It can leak blood and cause a stroke or bleeding along the surface of the brain.
Aneurysm clipping is a surgical procedure to prevent or stop an aneurysm from bleeding. The neurosurgeon places a tiny clip across the base of the aneurysm so that it is cut off from the normal blood flow in the vessel. Clipping is done under general anesthesia through an opening in the skull. The titanium clip works like a tiny clothespin, staying tightly closed unless pressure is applied to the ends of the clip. The clips remain in place permanently.