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Eur J Cardiothorac Surg 2002;21:342-344
© 2002 Elsevier Science NL

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Creating a bicuspid valve from the aortic wall: a new surgical approach on aortic valve disease (in vitro study)

Mustafa Ünal, Cüneyt Konuralp^*, Mustafa diz, Murat Akçar

Department of Cardiovascular Surgery, Siyami Ersek Thoracic and Cardiovascular Surgery Center, Istanbul, Turkey

Received 22 June 2001; received in revised form 22 November 2001; accepted 22 November 2001.

* Corresponding author. Aye Çavu Sokak, No: 7/6, Huri Apt., Suadiye, 81070 Istanbul, Turkey. Tel./fax: +90-216-363-3642
e-mail: ckonuralp{at}usa.net

We described a new technique (called ‘bicuspidization’), which is performed by using autogenous material, without replacement of the aortic valves for the surgical treatment of aortic stenosis and/or insufficiency and tested it in in vitro sheep model. Different stress conditions were simulated by applying three different flow patterns (hemodynamic challenge tests) successively by using a centrifugal pump. It was demonstrated that the competency of the new bicuspid valves was excellent (zero insufficiency). There was a 10–11 mmHg-increase on trans-valvular gradient comparing the normal hearts. The autogenous bicuspid valve has not blocked the way of the coronary flow in the closed position.

Key Words: Aortic valve stenosis • Aortic valve insufficiency • Bicuspid valve • Bicuspidization technique