Chanthasenanont Athita, Pongrojpaw Densak, Somprasit Charintip
Division of Maternal-Fetal-Medicine, Department of Obstetrics and Gynecology, Thammasat University, Pathumthani, Thailand.
J Med Assoc Thai. 2008 Jun;91(6):794-8.
To present normal range of the pulsatility index and the smallest diameter in the ductus venosus in normal fetuses throughout gestation.
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.
The median diameter of the ductus venosus was linear across gestation.
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.
呈现整个孕期正常胎儿静脉导管搏动指数和最小直径的正常范围。
这是一项前瞻性横断面研究。在胎儿安静状态下，对每个胎儿的静脉导管直径和搏动指数进行三次测量。使用社会科学统计软件包14.0软件绘制静脉导管搏动指数和直径相对于孕周的列线图。对460例孕17至37周的正常胎儿进行了评估。
静脉导管的中位直径在整个孕期呈线性变化。
给出了静脉导管搏动指数和直径的列线图。静脉导管最窄部分的大小在整个孕期呈线性增长关系。
