Fetal Ductus Venosus Pulsatility Index and Diameter during 20-30 Weeks Gestation
Athita Chanthasenanont MD*, Densak Pongrojpaw MD*, Charintip Somprasit MD*
Affiliation : * Division of Maternal-Fetal-Medicine, Department of Obstetrics and Gynecology, Thammasat University, Pathumthani
Objective : To present normal range of the pulsatility index and the smallest diameter in the ductus venosus in
normal fetuses throughout gestation.
Material and Method: This was a prospectively cross-sectional study. Three measurements were made for the
ductus venosus diameter and the pulsatility index in each fetus during fetal quiescence. Statistical Package
for the Social Sciences 14.0 software was used to create nomograms for the ductus venosus pulsatility index
and diameter against gestational age. Four hundred and sixty normal fetuses aged seventeenth to thirty-
seventh weeks were evaluated.
Results : The median diameter of the ductus venosus was linear across gestation.
Conclusion : The nomograms for the ductus venosus pulsatility index and diameter are presented. The size of
the narrowest portion of the DV grows in a linear relationship through gestation.
Keywords : Diameter, Ductus venosus, Normal range, Pulsatility index
