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Less Invasive Interventional Treatment Can Be Recommended as First-Line Treatment for 'Silent Killer,' Abdominal Aortic Aneurysm
Date:3/10/2009

Durability, Effectiveness of Minimally Invasive Endovascular Repair Studied Over Eight Years With Nearly 500 Patients; Low Re-intervention Rates Comparable to Open Surgery

SAN DIEGO, March 10 /PRNewswire-USNewswire/ -- Endovascular or endograft repair, a minimally invasive interventional radiology treatment that uses stent grafts to treat abdominal aortic aneurysms (AAA), has low re-intervention rates that are comparable to those reported for open surgical repair -- and can be recommended as first-line treatment, according to a study released at the Society of Interventional Radiology's 34th Annual Scientific Meeting.

Currently this less invasive treatment has been reserved for elderly patients or those with co-morbid conditions who were considered too sick for major surgery. Stent grafts (tubes composed of fabric supported by metal mesh) were introduced about a decade ago. Because the devices were new, long-term durability was unknown, and there was initially a higher rate of secondary interventions compared to open surgery, it was recommended that patients with endografts be monitored yearly with imaging, subjecting them to annual radiation. "Our data show that the interventional radiology treatment can be chosen with confidence. This is good news for patients, many of whom do not want major abdominal surgery," said Tarun Sabharwal, M.D., interventional radiologist at Guy's and St. Thomas' Hospitals in London, England. Additionally, the researchers advocated revising current surveillance of patients' stent grafts by CT scans to check for delayed appearance of complications, especially in light of the added radiation risk the scans bring to patients.

AAA, called the "silent killer" because there are usually no obvious symptoms of the disease, is caused by a weakened area in the aorta, the main vessel that supplies blood from the heart to the rest of the body. When blood flows through the aorta, the pressure
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SOURCE Society of Interventional Radiology
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