RISK STRATIFICATION PREDICTS SURVIVAL IN PATIENTS WITH LOW GRADIENT PRESERVED LEFT VENTRICULAR EJECTION FRACTION AND SEVERE AORTIC STENOSIS AFTER AORTIC VALVE INTERVENTION

Background: Prior studies have showed that the prognosis of patients (pts) with low gradient severe aortic stenosis (LG SAS) and preserved left ventricular function (LVEF) is influenced by comorbidities and surgical risks. Whether aortic valve intervention (AVI) could improve long term outcome in LG