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Eur J Cardiothorac Surg 2002;22:218-222
© 2002 Elsevier Science NL

Acute dissection of the ascending aorta: first results of emergency valve sparing aortic root reconstruction

Department of Thoracic and Cardiovascular Surgery, Hannover Medical School, Carl-Neuberg-Straße 1, D-30625 Hannover, Germany

Received 13 December 2001; received in revised form 22 April 2002; accepted 29 April 2002.

* Corresponding author. Tel.: +49-511-532-6581; fax: +49-511-532-5404
e-mail: kallenbach{at}thg.mh-hannover.de

Objective: Acute dissection of the ascending aorta requires immediate surgical intervention. In this study, we report our first results with valve sparing aortic root reconstruction removing all the diseased tissues. Methods: From August 1995 to December 2000, 22 patients with acute aortic dissection of the ascending aorta (Stanford type A) underwent valve sparing aortic root reconstruction. Their ages ranged from 20 to 76 years (52±15, 68% males). Dissection was found in the ascending aorta (3 patients) or both in the ascending aorta and aortic arch (19 patients; 86%). Course and length of hospitalization, echocardiographic and clinical follow-up, complications and mortality were analysed. Results: Mean cardiopulmonary bypass time was 212±56 min (134–352 min), mean aortic cross clamp time was 157±24 min (114–205 min). In patients undergoing additional arch replacement (n=19), circulatory arrest was 35±18 min (11–75 min). After reconstruction, intraoperative echocardiography showed aortic insufficiency (AI) grade 0 in 16 patients (84%) and grade 1 in three patients (16%). Stay in intensive care unit was 2.1±0.7 days, and postoperative hospitalization was 21±14.4 days. There were three perioperative deaths (14%). Mean post-operative follow-up was 18.4±18 months (0.4–65.4 month). One patient died 10 months postoperatively. At follow-up, no patient suffered AI grade 2 or higher, and no reoperation for aortic valve failure was necessary. All patients presented with a favorable exercise tolerance being in New York Heart Association functional class I or II. Conclusion: Valve sparing aortic root reconstruction in patients with type A dissection can be performed with acceptable intraoperative mortality and morbidity and excellent results during follow-up. The complete resection of the diseased aorta is particularly appealing.

Key Words: Aortic aneurysm • Aortic dissection • Valves • Aorta • Reconstruction

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