Title: Relation between dissection structure of umbilical cord artery, blood flow indices and fetus′ growth
Abstract: Objective To study the relation between the dissection structure of umbilical cord artery and blood flow indices and fetus′ growth. Methods By color Doppler ultrasound, the diameter of umbilical cord and umbilical artery and umbilical vein was measured to compute surface area. The umbilical cord was divided into three parts: placenta affixing part, floating part and umbilical surrounding part.Their blood flow indices were measured and compared. Results Umbilical cord′s diameter in 21-40 weeks′ gestation was ( 1.25 ± 0.21 ) to ( 1.50 ± 0.18 )cm, surface area was ( 1.26 ± 0.13 ) to ( 1.83 ± 0.47 )cm 2.Umbilical artery′s diameter was ( 0.28 ± 0.06 ) to ( 0.40 ± 0.09 )cm, its surface area was ( 0.06 ± 0.03 ) to ( 0.14 ± 0.06 )cm 2.Umbilical vein′s diameter was ( 0.54 ± 0.11 ) to ( 0.79 ± 0.11 )cm, its surface area was ( 0.25 ± 0.02 ) to ( 0.49 ± 0.15 )cm 2. Before 25 weeks′ gestation, the blood flow indices of umbilical artey of placenta affixing part were lower than those of other two parts(P 0.05 ).After 36 weeks′ gestation, the blood flow indices of umbilical artey of placenta affixing part were higher than those of other two parts (P0.05) .No significant difference was found in 26-35 weeks′ gestation on the blood flow indices among the three parts (P 0.05 ).Conclusions The diameter and surface area of umbilical and umbilical artery and umbilical vein were growing in pace with gestation, biparietal diameter,frontoccipital diameter, and heand circumference of the fetus,the blood flow indices of umbilical artery goes down continuously.The blood flow indices of umbilical artery of placenta affixing part reflect the fetus′ growth.
Publication Year: 2003
Publication Date: 2003-01-01
Language: en
Type: article
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