Figure 3.

Bioprosthetic aortic valve real internal diameter. Most manufacturer’s label size, corresponds to the outer base ring diameter, which matches the annular measurements made by the implanting surgeon using sizing tools. Although there is variability between various manufacturers, the real internal diameter, which is the most relevant measure during TAV-in-SAV valve-in-valve procedures, is always smaller than the labelled size (6,12-14). TAV-in-SAV, transcatheter aortic valve-in-surgical aortic valve.