Aortic Root Z-Scores (Gautier et al., 2010)

Z-scores of the aortic root at the level of the aortic annulus, sinuses of Valsalva, sinotubular junction, and ascending aorta. Measurements are from the parasternal long axis: aortic annulus measured in systole at the hinge points of the leaflets; sinuses, sinotubular junction and ascending aorta are measured in diastole using leading-edge to leading-edge technique. Data is from 353 normal children as reported by investigators at Hôpital Bichat, Paris, France.

Also see: consolidated aortic root z-score calculator

Site Measured (mm) Mean ULN Z-Score


Nomograms for Aortic Root Diameters in Children Using Two-Dimensional Echocardiography. Gautier M, Detaint D, Fermanian C, Aegerter P, Delorme G, Arnoult F, Milleron O, Raoux F, Stheneur C, Boileau C, Vahanian A, Jondeau G. Am J Cardiol. 2010 Mar 15;105(6):888-894.