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UCSF vascular surgeons develop new technique to repair aortic arch aneurysm

Tim Chuter, MD, associate professor of surgery and Schneider, MD, assistant professor of surgery and radiology -- created a stentgraft that included a main tube and a branch that extended into the innominate artery, one of three main arteries that branch off the aortic arch. The innominate artery directs blood flow to the right side of the brain and the right arm. Once the stentgraft was placed, surgeons completed a bypass to restore blood flow to areas supplied by the two additional arteries that branch off the aortic arch the left carotid artery and the left subclavian artery. The left carotid supplies blood to the left side of the brain. The left subclavian supplies blood to the right arm.

Related experimental branched stentgraft devices previously have been used at UCSF Medical Center to repair aneurysms in the aorta (those lower in the chest and abdomen). Chuter completed the first catheter-delivered branched stentgraft for abdominal aneurysms in 2000. Since then, Chuter and his colleagues have completed eight such aneurysm repairs.

Chuter has long been at the cutting edge of design and placement of these aortic stentgrafts. He designed, built and used the first Y-shaped, or bifurcated stentgraft, which spans part of the main aorta and extends into the main arteries supplying each leg.

Today, many stentgrafts are modeled on this Y-shaped graft and are used to treat abdominal aortic aneurysms.

Other investigational stentgrafts contain fenestrations (or holes) to accommodate arteries that lead from the aorta to the kidneys a development pioneered by vascular surgeons in Australia. Chuter and Schneider have also used fenestrated stengrafts at UCSF to treat aortic aneurysms that involve the portion of the aorta next to the kidney arteries.

Chuter has an investigational device exception from the FDA that enables him to used non-approved devices to treat increasingly complex aortic aneurysms that cannot be treated with c
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Contact: Maureen McInaney or Janet Basu
jbasu@pubaff.ucsf.edu
415-476-8429
University of California - San Francisco
16-Oct-2003


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