Comparison of aortic valve repair techniques with single and double ring annuloplasties

For patients with isolated aortic regurgitation, a double sub- and supravalvular annuloplasty has been shown to reduce recurrent aortic regurgitation after aortic valve repair compared with a single subvalvular annuloplasty. The ventricular chamber was connected to an electromechanical piston pump system (Superpump AR series, ViVitro labs, Victoria, Canada). These two findings support the concept of a functional aortic annulus, where the two levels interact and affect the function and competence of the aortic valve.

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