title: Identification of patients with aortic stenosis in whom Doppler ultrasound may replace the invasive measurement of pressure gradients.
mesh_terms: D000328:Adult; D000368:Aged; D000787:Angina Pectoris / Q000175:diagnosis; D001024:Aortic Valve Stenosis / Q000175:diagnosis*; D001794:Blood Pressure; D002114:Calcinosis / Q000175:diagnosis; D006328:Cardiac Catheterization; D003327:Coronary Disease / Q000175:diagnosis; D004452:Echocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012212:Rheology; D012306:Risk