SimpleScience@Heart: New stent safer, more effective at mending brain aneurysms
A new stent — covered with a thin, porous layer of polyurethane — repaired aneurysms in an animal study presented at the American Heart Association’s Scientific Sessions 2012.
A brain aneurysm is a weakness in the wall of a brain vessel that balloons out and is at risk of rupturing and bleeding into the brain. Aneurysms are often treated with surgery, stents or spring-like coils placed in the blood vessel to limit blood flow and support the weakened area.
The new stent can be particularly helpful for large aneurysms in the area where the skull and neck meet, researchers said.
In rabbits, the new stent worked in more than 30 aneurysms, with the treated blood vessel intact a year later. In aneurysms treated with stents that didn’t have the coating, about 30 percent still had signs of blood vessel weakness a year later.
Stories available for linking, quoting, excerpting, reprinting
Stories appearing on blog.heart.org under the "By American Heart Association News" byline are available for linking, quoting, excerpting and reprinting. Copyright is owned or held by the American Heart Association, Inc., and all rights are reserved. Permission is granted, at no cost and without need for further request, to link to, quote, excerpt or reprint from these stories in any medium as long as no text is altered and proper attribution is made to the American Heart Association. Additional conditions may apply to the use of these stories in printed materials.
American Heart Association additional conditions for linking, quoting, excerpting, reprinting stories in print media
- A credit line of American Heart Association News must be prominently placed on the page in which the American Heart Association materials appear.
- The American Heart Association logo and service marks may only be used if they appear on the materials requested.
- Stories reprinted may be edited for length, but no other deletions, alterations or other changes may be made without the prior written consent of the American Heart Association.
- Artwork labeled "American Heart Association" may be reprinted, but other artwork may not. For artwork permission questions, contact firstname.lastname@example.org
- Stories reprinted may not be placed adjacent to any advertisement, photo, graphic or other content that could be considered inappropriate by the American Heart Association. For questions about whether content is inappropriate, contact email@example.com.
- Stories may not be displayed in any way that gives the appearance that the American Heart Association endorses (implied or otherwise) or is affiliated with any product, service or company.