Elevated myocardial extracellular volume fraction as a new predictor of conduction defects after transcatheter aortic valve replacement

Abstract

Key points

• Transcatheter aortic valve replacement (TAVR) is now the standard of care for patients with severe symptomatic aortic stenosis (AS).
• New conduction defects remain a challenge following TAVR in patients requiring permanent pacemaker implantation (PPI).
• CMRI identified myocardial fibrosis (MF) with an increased extracellular volume (ECV) is a new predictor for these conduction defects following TAVR.

Keywords: AVD—aortic valve disease; cardiac magnetic resonance imaging; IMRI—imaging; TVI—transcatheter valve implantation.