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Survival rates lower for heart transplant patients whose arteries reclose after stenting
Date:6/18/2012

Heart transplant patients are notorious for developing an aggressive form of coronary artery disease that can often result in heart failure, death or the need for repeat transplantation. The condition can also have a negative impact on future cardiac procedures, such as stenting.

Transplant patients are among those at highest risk of adverse outcomes when receiving a stent to address a blockage in an artery. Compared with the general public, these patients have a much higher rate of restenosis, a side effect of stenting in which the artery becomes re-blocked because of an exaggerated scarring process at the stenting site.

New research by UCLA researchers and colleagues has found that heart transplant patients who develop restenosis after receiving a stent have poor long-term survival. Their study, one of the largest and longest follow-up studies of this patient population, appeared in the June 15 edition of the American Journal of Cardiology.

"The findings point to the need for improvements in prevention and treatment of transplant coronary artery disease that may help reduce restenosis for patients who require later cardiac procedures like stenting," said Dr. Michael Lee, an assistant professor of cardiology at the David Geffen School of Medicine at UCLA.

A stenting procedure begins with an angioplasty, in which a catheter is placed in an artery of the groin and a tiny wire is snaked up through the artery to the blocked area of the heart. The clogged artery is cleaned out, and then a stent a tiny wire-mesh tube is passed up through the artery and deployed to keep the artery open, allowing blood to flow freely through the heart again.

Currently, there are no guidelines or treatment recommendations for in-stent restenosis for transplant coronary artery disease, Lee said. He suggests that a scoring system to help pinpoint risks might help identify good candidates for stenting and other catheter-based
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Contact: Rachel Champeau
rchampeau@mednet.ucla.edu
310-794-2270
University of California - Los Angeles Health Sciences
Source:Eurekalert

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