High-pressure balloon fracturing of small dysfunctional Mitroflow bioprostheses facilitates transcatheter aortic valve-in-valve implantation

Jens Erik Nielsen-Kudsk1*, MD, DMSc; Asger Andersen1, MD, PhD; Christian Juhl Therkelsen1, MD, PhD, DMSc; Evald Høj Christensen1, MD, PhD; Kaare Troels Jensen1, MD, PhD; Lars Romer Krusell1, MD, PhD; Mariann Tang2, MD, PhD; Kim Allan Terp2, MD, PhD; Kaj-Erik Klaaborg2, MD; Jacob Raben Greisen3, MD, PhD; Bjarne Linde Nørgaard1, MD, PhD; Henning Rud Andersen1, MD, DMSc