BACKGROUND We examined the clinical significance of pregnancies complicated by velamentous cord insertion (VCI) associated with other umbilical cord/placental abnormalities. METHODS Data were collected from 168 deliveries complicated by VCI and from 16,797 unaffected controls. All placentae were screened identically by trained staff. In this study, we examined the presence of excessively long...

Abstract To examine the effects of maternal nutrient restriction on net uteroplacental flux during mid-gestation, 14 singleton ewes (48.2 ± 4.0 kg body weight) were fed 100% (control; CON; n = 7) or 60% requirements (restricted; RES; from day 50–90 (mid-gestation). On 90, blood flow was measured via Doppler ultrasonography and samples collected femoral artery, uterine vein, umbilical vein. Bloo...

OBJECTIVES To compare umbilical and uterine artery Doppler waveforms and fetal size at 20 weeks between smokers and nonsmokers. DESIGN Prospective cohort study. SETTING Auckland, New Zealand and Adelaide, Australia. POPULATION Nulliparous participants in the Screening for Pregnancy Endpoints (SCOPE) study. METHODS Self-reported smoking status was determined at 15 +/- 1 weeks' gestation....

OBJECTIVE To evaluate the usefulness of Color Doppler flowmetry in the prediction of intrauterine growth restriction (IUGR) in high-risk pregnancies. MATERIALS AND METHOD A total of 62 high-risk pregnant women underwent Color Doppler flowmetric umbilical artery pulsatility index (PI), resistive index (RI) and systolic/diastolic (S/D) ratio, middle cerebral artery PI, RI and S/D ratio, Ductus ...

BACKGROUND Suboptimal fetal nutrition may influence early growth and cardiovascular development. We examined whether umbilical and uterine artery resistance indices, as measures of feto-placental and utero-placental vascular function, respectively, are associated with fetal and childhood growth and cardiovascular development. METHODS AND RESULTS This study was embedded in a population-based p...

Background: Objectives of current study were to study the significance of Doppler in PIH using middle cerebral artery and umbilical artery blood flow and to analyze the role of Doppler in PIH in predicting perinatal outcome. Methods: Hundred cases of women with pregnancy induced hypertension between 28-40 weeks of gestation were studied for umbilical artery and middle cerebral artery Doppler wa...

Measurements of placental transmission of atropine were performed during Caesarean section. Twenty-five patients received 3H-atropine 0.5 microgram . kg-1 i.v. 1-30 min before delivery. Maternal venous blood was sampled before the induction of anaesthesia and at the moment of delivery, together with umbilical arterial and venous blood. Total hydrogen-3 activity was determined by liquid scintill...

Characteristics of the uterine and umbilical artery blood flow patterns are indirect measures of uteroplacental circulation. We examined whether uterine and umbilical artery resistance indices are influenced by maternal demographic and lifestyle characteristics, track from the second trimester to the third, and are associated with the risk of pregnancy complications. This analysis was embedded ...

OBJECTIVE To relate Doppler velocimetry findings in fetoplacental and uteroplacental circulation to placental histomorphology. MATERIAL AND METHODS In 14 uncomplicated and 31 high-risk pregnancies Doppler velocimetry was performed in umbilical artery and vein, and in maternal uterine veins and arteries during the second half of gestation. Histopathology of the placentas was examined, especial...