Author: Suzuki Shunji
Publisher: Informa Healthcare
ISSN: 1476-4954
Source: Journal of Maternal-Fetal and Neonatal Medicine, Vol.19, Iss.3, 2006-03, pp. : 193-194
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Abstract
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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