OBJECTIVES To compare uterine artery pulsatility index (PI) obtained at 11 + 0 to 13 + 6 weeks of gestation in singleton and twin pregnancies and to evaluate changes in PI values of twin pregnancies developing pre-eclampsia (PE) or small-for-gestational age (SGA) of either one or both fetuses. METHODS Uterine artery PI was measured in 421 twin pregnancies (384 dichorionic and 37 monochorionic...

BACKGROUND Angiogenesis has been found to be among the most important factors in the pathogenesis of endometriosis. The formation of new blood vessels is critical for the survival of newly implanted endometriotic foci. The use of 3-D power Doppler allows for the demonstration of the dynamic vascular changes that occur during the process of in vitro fertilization (IVF). We aimed to evaluate the ...

OBJECTIVE the objective of our research was to study uterine artery doppler indices and their evolution over time after metroplasty and subsequent pregnancy in patients whose septate uterus was the only explanation for infertility. MATERIALS AND METHODS a retrospective study. The uterine arteries of 78 patients with septate uteri were evaluated using endovaginal color doppler ultrasound befor...

OBJECTIVE We hypothesized that maternal and fetal circulations may be affected by moderately high altitudes. Therefore, we compared the differences in maternal and fetal Doppler flow parameters in women with term pregnancy living at a moderately high altitude (1890 m in Erzurum) with those of women living at the sea level (31 m in İstanbul). MATERIAL AND METHODS Eighty women (n=40, for each g...

Aim—To determine whether antenatal administration of thyrotrophin releasing hormone (TRH), to promote lungmaturation, alters blood flow through the fetal middle cerebral, umbilical artery, or ductus arteriosus and through the maternal uterine arteries. Methods—The eVect of transplacentally administered TRH on the fetal circulation was prospectively evaluated in 30 patients between 24 and 34 wee...

AIM To determine whether antenatal administration of thyrotrophin releasing hormone (TRH), to promote lung maturation, alters blood flow through the fetal middle cerebral, umbilical artery, or ductus arteriosus and through the maternal uterine arteries. METHODS The effect of transplacentally administered TRH on the fetal circulation was prospectively evaluated in 30 patients between 24 and 34...

OBJECTIVE To determine predictive values of maternal serum PAPP-A (msPAPP-A) levels, uterine artery Doppler velocimetry, and fetal biometric measurements (FBMs) for poor pregnancy and poor neonatal outcomes. MATERIAL AND METHODS This prospective cohort study was conducted on singleton pregnancies followed until delivery. Pregnancy and neonatal outcomes were evaluated with respect to the msPAP...

AIM To elucidate the hemodynamics of the uterine artery myomas by use of Doppler ultrasound and biomagnetic measurements. METHOD Twenty-four women were included in the study. Sixteen of them were characterised with large myomas whereas 8 of them with small ones. Biomagnetic signals of uterine arteries myomas were recorded and analyzed with Fourier analysis. The biomagnetic signals were distri...