Conformational changes during in vitro balloon fracture of internal aortic annuloplasty ring

Transcatheter aortic valve-in-ring implantation after aortic valve repair and annuloplasty

“…In vitro experiments demonstrate internal annuloplasty ring fracture using valvuloplasty balloons 4- to 5-mm larger than the ring size is possible but uncontrollable. E1 However, this report demonstrates the need for ring fracture may not be required for even the smallest internal annuloplasty ring when self-expanding valves are used. A larger sample size and further experiments are needed to understand the overall benefits, risks, limitations, and prognosis of aortic valve-in-ring procedures.…”