Valve-in-valve prosthesis-late morphological findings

Abstract

Since its implantation in 2002, transcatheter aortic valve implantation (TAVI) has become the preferred intervention for patients with severe aortic stenosis and significant co-morbidities. In 2007, it was adopted as a rescue procedure for failed bioprosthetic valves, now known as the valve-in-valve (VIV) procedure. Unlike other modes of treatment with a multitude of phase 4 post-marketing surveillance (PMS) data, use of these valves have increased rapidly even without long term durability data on this procedure and the near lack of information on the pathology of failed transcatheter aortic valve replacement (TAVR) bioprosthesis and especially after the VIV procedure. We present a case of a late explanted VIV bioprosthesis (ten (10) years post-initial aortic valve replacement and five (5) years post-VIV procedure) in a 65-year-old male with multiple morphologic findings. Further availability of standardized morphologic data from explanted bioprosthetic valves is essential to aid in understanding the pathophysiology of tissue degeneration of the TAVI valve, and ultimately to improve patient outcomes by identifying possible early interventional strategies.

Keywords: bioprosthesis; transcatheter aortic valve implantation; valve-in valve.