People with a small aortic annulus, a part of the heart’s anatomy where the left ventricle meets the aorta, who underwent transcatheter aortic valve replacement (TAVR) with a supra-annular self-expanding valve saw similar clinical outcomes and superior valve performance at one year compared with those who underwent TAVR with a balloon-expandable valve, according to research presented at the American College of Cardiology’s Annual Scientific Session.