Plasma N-terminal pro-B-type natriuretic peptide in the detection of aortic valve stenosis.

Background: Systolic murmur suggestive of aortic valve origin is a common accidental finding, particularly in the elderly. Usually, it is due to aortic stenosis (AS) or aortic sclerosis (ASc). Currently, echocardiography is used to differentiate AS from ASc.