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Just accepted article

Fracturing mechanics before valve-in-valve therapy of small aortic bioprosthetic heart valves

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1. Department of Engineering Aarhus University Denmark; 2. Department of Engineering Aarhus University Denmark; 3. Department of Cardiothoracic Surgery Aarhus University Hospital Denmark; 4. Department of Engineering Aarhus University Denmark; 5. Department of Engineering Aarhus University Denmark; 6. Aarhus University Hospital, Department of Cardiology, Aarhus N, DENMARK

Abstract

Aims:Patients with degraded bioprosthetic heart valves (BHV) who are not candidates for valve replacement may benefit from transcatheter valve-in-valve (VIV) therapy. However, at smaller sized surgical BHV the resultant orifice may become too narrow. To overcome this, the valve frame can be fractured by a high-pressure balloon prior to VIV. However, knowledge on fracture pressures and mechanics are prerequisites. The aim of this study is to identify the fracture pressures needed in BHV, and to describe the fracture mechanics.

Methods and results:Commonly used BHV of…

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