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Ann Thorac Surg 1998;66:82-87
© 1998 The Society of Thoracic Surgeons

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Original articles: cardiovascular

Elephant trunk procedure for surgical treatment of aortic dissection¹

^a Department of Cardiovascular Surgery, National Cardiovascular Center, Osaka, Japan

Accepted for publication February 11, 1998.

Address reprint requests to Dr Ando, Department of Cardiovascular Surgery, National Cardiovascular Center, 5-7-1 Fujishirodai, Suita, Osaka 565, Japan

Background. In surgical intervention for aortic dissection, a highly radical operation can be performed by distal anastomosis with a true lumen resulting in thrombotic closure of the dissecting lumen. In this anastomosis, the elephant trunk procedure, in which a graft is inserted into the distal true lumen, prevents blood flow leakage into the dissecting lumen at the anastomosis site and also strengthens this area.

Methods. We performed this procedure in 15 patients (8 men and 7 women). Acute aortic dissection was observed in 9 patients and chronic dissection in 6. Stanford type A dissection was diagnosed in 10 patients and type B in 5.

Results. Graft replacement of the ascending aorta and total aortic arch was performed in 10 patients and descending aortic replacement in 5. A graft with a diameter of 16 to 24 mm was inserted into the true lumen of the descending aorta, and the false lumen was closed. Subsequently, distal anastomosis was performed on the true lumen. There were two hospital deaths. Postoperative digital subtraction angiography showed good results in living patients, and computed tomographic scanning showed thrombotic closure in the dissecting lumen of the descending aorta.

Conclusions. The elephant trunk procedure is useful for closing the false lumen of the distal aorta.

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