Cardiovascular magnetic resonance assessment of 1st generation CoreValve and 2nd generation Lotus valves

Objectives We sought to compare using serial CMR, the quantity of AR and associated valve hemodynamics, following the first‐generation CoreValve (Medtronic, Minneapolis, MN) and the second‐generation Lotus valve (Boston Scientific, Natick, MA). Background Aortic regurgitation (AR) following Transcatheter Aortic Valve Replacement (TAVR) confers a worse prognosis and can be accurately quantified using cardiovascular magnetic resonance (CMR). Second generation valves have been specifically designed to reduce paravalvular AR and improve clinical outcomes. Methods Fifty‐one patients (79.0 ± 7.7 years, 57% male) were recruited and imaged at three time points: immediately pre‐ and post‐TAVR, and at 6 months. Results CMR‐derived AR fraction immediately post‐TAVR was greater in the CoreValve compared to Lotus group (11.7 ± 8.4 vs. 4.3 ± 3.4%, P = 0.001), as was the frequency of ≥moderate AR (9/24 (37.5%) versus 0/27, P