Correlation of Brain Natriuretic Peptide Levels in Patients With Severe Aortic Stenosis Undergoing Operative Valve Replacement or Percutaneous Transcatheter Intervention With Clinical, Echocardiographic, and Hemodynamic Factors and Prognosis

Study Questions:

Is there a relationship between B-type natriuretic peptide (BNP), aortic stenosis (AS) severity, and prognosis?