Neo-LVOT and Transcatheter Mitral Valve Replacement Expert Recommendations

Reid, A.; Zekry, S. ben; Turaga, M.; Tarazi, S.; Bax, J.J.; Wang, D.D.; ... ; Leipsic, J. (2021)

Article / Letter to editor

With the advent of transcatheter mitral valve replacement (TMVR), the concept of the neo-left ventricular outflow tract (LVOT) was introduced and remains an essential component of treatment planning. This paper describes the LVOT anatomy and provides a step-by-step computed tomography methodology to segment and measure the neo-LVOT while discussing the current evidence and outstanding challenges. It also discusses the technical and hemodynamic factors that play a major role in assessing the neo-LVOT. A summary of expert-based recommendations about the overall risk of LVOT obstruction in different scenarios is presented along with the currently available methods to reduce the risk of LVOT obstruction and other post-procedural complications. (C) 2021 by the American College of Cardiology Foundation.

• LVOT
• LVOT obstruction
• neo-LVOT
• transcatheter mitral valve replacement

• All authors: Reid, A.; Zekry, S. ben; Turaga, M.; Tarazi, S.; Bax, J.J.; Wang, D.D.; Piazza, N.; Bapat, V.N.; Ihdayhid, A.R.; Cavalcante, J.L.; Blanke, P.; Leipsic, J.
• Date: 2021-04-01
• Journal: JACC: Cardiovascular Imaging
• Volume: 14
• Issue: 4
• Pages: 843 - 866
• DOI: doi:10.1016/j.jcmg.2020.09.027