Innovative Resources for Fractional Limb Volume, Fetal Echocardiography, and Individualized Growth Assessment
Please e-mail questions to Wesley Lee, M.D. (wlee@obsono.org)
  • On Friday, March 13, 2009, Greg DeVore said:
    This is a great first start. However, while the site introduces the user to the concept, it is not helpful until you have the weight calculator on line. I hope this concept "takes off" since we do need a better tool for 3rd trimester weight estimation.
    Greggory DeVore MD
  • On Saturday, March 14, 2009, antonio fernandes moron said:
    Congratulations Doctor Lee it will help a lot
  • On Saturday, March 14, 2009, Wesley Lee said:
    Thank you for your comments Greg. From my perspective, there are actually two paradigms where fractional limb volume could be used.

    1. as a growth parameter that can be "directly" measured by sonography to estimate fetal soft tissue development. The concept could be clinically relevant using AVol or TVol alone or, perhaps in conjunction with - for example, umbilical cord velocimetry. Future studies will need to examine this hypothesis.

    2. To improve the precision of fetal weight estimation because inclusion of fractional limb volume for CALCULATED EFW adds additional information about the nutritional contribution of soft tissue development toward fetal weight.

    A recent study indicates that AC and EFW are parameters that are not as highly correlated with actual % neonatal body fat - as opposed to 45 to 46 percent of the variance in % body fat that is accounted for by TVol or ACTUAL birth weight.

    Lee W, et al. Fetal growth parameters and birth weight: their relationship to neonatal body composition. Ultrasound Obstet Gynecol 2009;33:441-446.

    After our final EFW models have been accepted for publication, this new information and the on-line calculator/graphing program will be activated on this web site.
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