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Interact CardioVasc Thorac Surg 2006;5:578-580. doi:10.1510/icvts.2006.133967
© 2006 European Association of Cardio-Thoracic Surgery
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Didier Chatel
Francis Baud
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Institutional report - Cardiac general

Short-term hemodynamic advantages of stentless CryoLife-O'Brien valve over stented bioprostheses for aortic valve replacement

Didier Chatel*, Cristina Mica, Didier Blanchard, Francis Baud, Didier Bruere, Arnaud Maudiere and Patrick Peycher

Departments of Cardiovascular Surgery and Cardiovascular Medicine, Clinique Saint Gatien, 8, place de la Cathédrale 37000 Tours, France

*Corresponding author: Tel.: +33 2 47 66 30 13; fax: + 33 2 47 64 35 66.

E-mail address: d.e.chatel{at}wanadoo.fr (D. Chatel).

For the CryoLife-O'Brien valve (CryoLife Inc, Kennesaw, GA, USA), implanted with a single suture line, we aimed to analyze the surgical requests and the hemodynamic results compared to stented bioprostheses. Two groups of patients requiring isolated aortic valve replacement from this population were compared retrospectively: 84 patients receiving the stentless CryoLife-O'Brien valve (Group A) and 94 patients receiving stented bioprostheses (Group B). Preoperative characteristics of patients were statistically equivalent for both groups. Statistically significant differences were observed only for operative durations and post-operative transprosthetic gradients: Aorta cross-clamp and cardio-pulmonary bypass durations were statistically longer for Group A than for Group B (45.9±5.7 min vs. 41.1±6.8 min; P<0.0001; and 64.3±11.6 min vs. 59.3±11.9 min, respectively; P=0.0053); maximal gradients and mean gradients were 19.9±10.9 mmHg vs. 25.6±10.4 mmHg (P=0.0008) and 10.8±5.3 mmHg vs. 14.8±6.4 mmHg (P<0.0001). Few surgical constraints and early post-operative hemodynamic efficiency of the stentless CryoLife-O'Brien valve means that this bioprosthesis can be intented in current practice for the aortic valve replacement in elderly patients.

Key Words: Aortic valve replacement; Stentless bioprostheses

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