Ochiai T, et al. - Renin-angiotensin system (RAS) blockade therapy was tested for impact on left ventricular (LV) hypertrophy and mortality in patients undergoing transcatheter aortic valve implantation (TAVI). Greater LV mass index regression and reduced all-cause mortality were noted in association with postoperative RAS blockade therapy, however, these findings require corroboration in a prospective randomised controlled outcome trial.