Different methods are used for aortic root dilatation in different publications (eg.diastolic versus systolic measurement, inner to inner or leading edge to leading edge diameters). One should take into account these differences when choosing a formula to calculate Z-scores. Aortic root refers to the measurement at the sinuses of Valsalva.
Aortic Root Z-Scores for Children
For patients up to 25 years of age: utilizing systole, inner to inner edge measurement of the sinuses of valsalva according to personal communication from Steve Colan.
For further reading: Colan SD: Appendix: Normal Echocardiographic Values for Cardiovascular Structures, in Echocardiography in Pediatric and Congenital Heart Disease From Fetus to Adult, Second Edition, Lai WM, Mertens LL, Cohen MS, Geva T (editors). John Wiley & Sons, Ltd 2016.
Height (cm) :
Weight (kg) :
BSA : 0.00
Ao Root at sinuses of Valsalva (in cm) :
Aortic Root Z-Scores for Adults
For patients > 15 years of age through adulthood: utilizing diastole and leading edge-to-leading edge measurement of the sinuses of valsalva according to Devereux RB et al. Am J Cardiol 2012;110:1189 –1194).
Male Female
Height (cm) :
Weight (kg) :
Age (years) :
BSA : 0.00
Ao Root at sinuses of Valsalva (in cm) :