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There is increasing interest in the use of stentless porcine bioprostheses implanted by the free hand suturing technique. However, preservation of the normal valve geometry and function is a matter of concern. This study has been conducted to investigate the influence of free hand insertion on the hydrodynamic function of the aortic valve. In particular, free sewn valves have been compared to whole root replacements for both fresh valves and zero pressure fixed bioprostheses.

The influence of free hand suturing technique and zero pressure fixation on the hydrodynamic function of aortic root and aortic valve leaflets