Abstract
Implantation of a continuous-flow type left ventricular assist device (VAD) can cause a reduced or absent aortic valve opening, resulting in an underlying risk of thrombus formation in the aortic root or valve itself.1 Especially for patients who have undergone mechanical aortic valve replacement, replacement with a bioprosthetic valve or closed mechanical valve must be performed at the time of VAD surgery.1,2 Mechanical aortic valve closure has recently shown a tendency to be chosen in this setting and several closing techniques have been reported3-5; however, an ideal procedure has yet to be established.
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