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Guide Wire Assisted Catheterization and Colored Dye Injection for Vascular Mapping of Monochorionic Twin Placentas
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Published on: September 5, 2011

Influence of parity on second-trimester uterine artery Doppler waveforms in twin pregnancy

Shunji Suzuki1

  • 1Department of Obstetrics and Gynecology, Tokyo Rinkai Hospital, Japan. czg83542@mopera.ne.jp

The Journal of Maternal-Fetal & Neonatal Medicine : the Official Journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians
|May 13, 2006
PubMed

We performed uterine artery Doppler velocimetry in 16 nulliparous and 16 parous women with non-preeclamptic singleton gestations and 16 nulliparous and 16 parous women with dichorionic twin gestations at 17-18 and 26-27 weeks of gestation. In both singleton and twin pregnancies, the average pulsatility index (PI) in nulliparous women was significantly higher than that in parous women at 17-18 weeks of gestation. At 26-27 weeks of gestation, however, there were no significant differences in PI between nulliparous and parous women with either singleton or twin pregnancies. During the early second-trimester of non-preeclamptic singleton and twin pregnancies, parity has a significant effect on uterine artery blood flow.

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