Usefulness of the B-Type Natriuretic Peptides in Low Ejection Fraction, Low-Flow, Low-gradient Aortic Stenosis Results from the TOPAS Multicenter Prospective Cohort Study

Background: Patients with low left ventricular ejection fraction (LVEF), low-flow, low-gradient (i.e. classical low flow [CLF]) aortic stenosis (AS) have a dismal short-term outcome without aortic ...