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J Thorac Cardiovasc Surg 2002;123:1035-1040
© 2002 The American Association for Thoracic Surgery

Surgery for Acquired Cardiovascular Disease (ACD)

Extensive primary repair of the thoracic aorta in Stanford type A acute aortic dissection by means of a synthetic vascular graft with a self-expandable stent

From the Division of Cardiovascular Surgery, Hiroshima-city Asa General Hospital, Hiroshima, Japan.

Received for publication March 9, 2001. Revisions requested May 14, 2001; revisions received Sept 7, 2001. Accepted for publication Sept 11, 2001. Address for reprints: Hiroshi Ishihara, MD, Division of Cardiovascular Surgery, Hiroshima-city Asa General Hospital, 2-1-1, Kabeminami, Asakita-ku, Hiroshima, Japan, 731-0293 (E-mail: hirostone{at}do.enjoy.ne.jp).

Objectives: To minimize any residual false lumen when operating on patients with an acute type A aortic dissection, we tried to perform extensive primary repair of the thoracic aorta with the modified elephant trunk technique. The early and midterm results of these surgical interventions are reported and evaluated.
Methods: Among the acute type A aortic dissections with extensive false lumen encountered since December 1997, 19 consecutive patients, 15 DeBakey type I with the tear in the ascending, transverse, or both aortas, and 4 DeBakey type III-D with the tear located in the descending aorta, underwent insertion of a synthetic graft with a distally anchored stent in the descending thoracic aorta. The interpolation method was used as an introducer combined with total replacement of the aortic arch by using a synthetic branching graft with only a median sternotomy.
Results: One patient died, and 18 were discharged after full recovery. Postoperative computed tomographic scans showed that no residual false lumina were present proximal to the diaphragmatic level, and no false lumina were found in 10 patients. Two patients with acute ischemia of the right kidney caused by narrowing of the true lumen, as demonstrated by radiographic computed tomography, improved significantly after surgical intervention with restoration of blood flow in the true lumen. Paraplegia was not observed in any patient.
Conclusions: In emergency operations for an acute type A aortic dissection, the operation is often limited to replacing the ascending aorta because priority is given to saving the patient's life. However, it is possible to perform extensive primary repair of the thoracic aorta with relative safety by interpolating a synthetic graft with a self-expandable stent.

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