Endovascular Treatment for Pararenal Abdominal Aortic Aneurysm Using the Chimney Technique for Bilateral Renal Arteries

Yusuke Souma

Takayuki Tatebayashi

Sakashi Noji

（Department of Cardiovascular Surgery, Higashiyamato Hospital, Higashiyamato, Japan）

Endovascular aneurysm repair（EVAR）of pararenal abdominal aortic aneurysm（pararenal AAA）includes fenestrated or branched endografts, and the chimney technique. However, fenestrated and branched endografts are not currently available. An 82-year-old man, who underwent EVAR two years previously, was admitted to our hospital because of pararenal AAA measuring 56mm. He underwent endovascular treatment with the chimney technique for bilateral renal arteries. We used a self-expanding and balloon-expandable uncovered-stent in renal arteries. Postoperatively he had slight renal dysfunction and acute pancreatitis, but was discharged 14 days after surgery. EVAR with the chimney technique for bilateral renal arteries was thought to be useful in high risk patients with pararenal AAA.

Jpn. J. Cardiovasc. Surg. 44:256-260（2015）

Keywords：pararenal abdominal aortic aneurysm;chimney method;endovascular surgery;stent-graft