New Treatment for Brain Aneurysms Medical News and Health Information
New Treatment for Brain Aneurysms -- Research SummaryBACKGROUND: A brain aneurysm is a bulge or ballooning in a blood vessel in the brain. It often looks like a berry hanging on a stem. It can leak or rupture, causing bleeding into the brain. Brain aneurysms develop as a result of thinning and degenerating artery walls. Aneurysms often form at forks or branches in arteries where the vessel is weaker. Aneurysms can appear anywhere in the brain, but are most common at the base.
A ruptured brain aneurysm most often occurs in the space between the brain and the thin tissues covering the brain. A ruptured aneurysm quickly becomes life-threatening and requires prompt medical treatment. In about 30 percent of cases, ruptured brain aneurysms are fatal. Most, however, don't rupture, create health problems or cause symptoms. Such aneurysms are often detected during tests for other conditions. (http://www.mayoclinic.com/)
SYMPTOMS: A sudden, severe headache is the key symptom of a ruptured aneurysm. Additional signs include: nausea and vomiting, stiff neck, blurred or double vision, sensitivity to light, seizure, drooping eyelid, loss of consciousness and confusion. In some cases, an aneurysm may leak a small amount of blood, causing a sudden, severe headache. A more severe rupture almost always follows leaking.
An unruptured brain aneurysm may produce no symptoms. However, a large unruptured aneurysm may press on brain tissues and nerves, possibly causing pain above and behind an eye, a dilated pupil, vision changes, numbness, weakness or paralysis in one side of the face or a drooping eyelid. (http://www.mayoclinic.com/)
PIPELINE STENT: The Pipeline Embolization Device received FDA premarket approval in April 2011. Stents in general led to good outcomes. They prop up the vessel wall and when the vessel lining grows over the stent, it strengthens. Older stents, because of their mesh construction, have not been successful at redirecting blood flow; blood can flow through the mesh.
The Pipeline stent provides a mesh so tightly woven that it redirects blood flow past the aneurysm so that the aneurysm can clot off and heal. The international success rate with this flow-diverting stent has been high: 90 to 95 percent of the aneurysms treated never came back.
The stent is 75 percent cobalt chromium and 25 percent platinum tungsten; it comprises 48 densely braided strands. It is “customizable” in that multiple devices can be telescoped together, one inside the next, for longer constructs. (http://www.mdnews.com/) MORE
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