Allometric versus ratiometric normalization of left ventricular stroke volume by Doppler-echocardiography for outcome prediction in severe aortic stenosis with preserved ejection fraction

摘要

c Background: Appropriate normalization methods to scale Doppler-derived stroke volume (SV) to body size in patients with aortic stenosis (AS) are poorly defined and reference values are lacking. We aim to establish reference values of normalized SV in adults, and to compare the prognostic value of SV normalized by different methods in AS patients.