TCT-33 Bioprosthetic Valve Fracture Performed Pre– Versus Post–Valve-in-Valve Transcatheter Aortic Valve Replacement: Insights From Bench Testing

Bioprosthetic valve fracture (BVF) improves transvalvular gradients and transcatheter heart valve (THV) expansion during valve-in-valve (VIV) transcatheter aortic valve replacement (TAVR). However, the optimal timing (pre- vs. post-VIV TAVR) of BVF is unknown. Three THV designs were assessed: a 23-