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The sequential Branch and Bound Algorithm is the most established method for solving Mixed Integer and Discrete Programming Problems. It is based on the tree search of the possible subproblems of the original problem. There are two goals in carrying out a tree search, namely, (i) nding a good and ultimately the best integer solution, and (ii) to prove that(More)
The aim of the present study was to evaluate whether assessment of stroke volume index (SVI) can be used to improve risk stratification among patients with low-gradient severe aortic stenosis and preserved ejection fraction (EF). Study population comprised 409 patients with aortic valve area ≤1.00 cm(2), mean gradient <40 mm Hg, and a normal EF (≥50%) who(More)
OBJECTIVE The outcome of aortic valve replacement for patients with low gradient severe aortic stenosis and preserved ejection fraction has been debated. The aim of the present study was to evaluate the effect of aortic valve intervention on survival in that group. METHODS A cohort of 416 consecutive patients with low gradient severe aortic stenosis(More)
UNLABELLED Background: The rate of mitral bioprosthesis implantation in clinical practice is increasing. Transcatheter valve-in- valve implantation has been described for high risk patients requiring redo valve surgery. OBJECTIVES To report our experience with transapical valve-in-valve implantation for failed mitral bioprosthesis. METHODS Since 2010,(More)
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