Aortic Root Normal Values - Nomogram

Normal values derived from 353 children (Paris)
AJC 2010;105:888-94.



Solid line - Boys
Dotted line - Girls

Indication for Surgery in Marfan Syndrome

Single institution experience. Take it with "a pinch of salt".
(Mt Sinai Medical Center, New York, NY - Dr. Randall Griepp is the senior author)
Diameter = Diameter at Sinus of Valsalva (SoV)
Ratio (Aortic ratio) = Observed diameter/Predicted diameter at SoV

Predicted diameter of SoV is determined from regression formula ("reportedly" derived from Roman MJ et al. AJC 1989:64:507-12). It "appears" that the regression formulas dervice the expected mean value - not clarified in the referenced article (Leget et al. Heart 1996;75:389-95).
Regression formula for "Predicted diameter of SoV" in cm. are as follows:
Child (< 18 yrs): 1.02 + (0.98 x BSA in m2)
Adult (18-40 yrs): 0.97 + (1.12 x BSA in m2)
Adult (> 40 yrs): 1.92 + (0.74 x BSA in m2)

Ann Thoracic Surg 1999;67:1834-9.


Prosthetic Valve - Valve Orifice Area

For St. Judes Valve: (From Manufacturer's website)
Useful to evaluate for Patient-Prosthesis Mismatch
(Click on the image to enlarge)


DORV classification

DORV types & distribution from a study of 70 specimens.
(From Moss and Adams)
Click on the image to enlarge