THE IMPACT OF TRANSAORTIC GRADIENT AND TRANSAORTIC FLOW ON THE DISCREPANCY BETWEEN ECHOCARDIOGRAPHIC AND CARDIAC CATHETERIZATION EVALUATION OF SEVERE AORTIC STENOSIS WITH PRESERVED EJECTION FRACTION

Background: Current guidelines discourage aortic stenosis (AS) evaluation by direct pressure measurement if echocardiography (echo) is adequate. However several studies show sizable discrepancies between echo and catheterization (cath) lab measurements. We wanted to investigate the impact of both