Search Results
Results 151 - 200 of 1458
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To William W K - - 2009
Objective. To compare Doppler measurements of umbilical arteries (UAs) and veins (UV) in diabetic and nondiabetic pregnancies near term. Methods. Consecutive patients with gestational diabetes mellitus (GDM) were prospectively recruited from a regional obstetric service over an 18-month period. Doppler assessment of the UA and UV done within 10 days ...
Badami K G - - 2009
Anti-D was detected for the first time at 36 weeks gestation in a group A RhD-negative primigravida without prior sensitizing events or anti-D administration. Simultaneously, foetal ultrasound showed middle cerebral artery maximum velocity (MCA V(max)) at the 95th centile but no hydrops. Labour was induced at 37 weeks. Although neonatal ...
Burbank Fred - - 2009
During mature placenta formation, select fetal trophoblasts invade maternal decidual arterioles and junctional zone arteries and change them into low-resistance uteroplacental arteries. Consequently, physicians performing vascular procedures that occlude the uterine arteries should understand their effects on miscarriage rates, the various toxemias of pregnancy, gross and microscopic placental anatomy, and ...
Kaihura Christina - - 2009
Preeclampsia (PE) is characterized by an aberrant maternal cardiovascular adaptation to pregnancy and increased cardiovascular risk later on in life. The aim of this study was to compare the maternal wave reflections and arterial stiffness in women with established PE and those with normotensive pregnancies, after systematic adjustment for known ...
Melchiorre K - - 2009
OBJECTIVES: To assess the relationship of first-trimester uterine artery Doppler indices with subsequent delivery of small-for-gestational age (SGA) neonates or intrauterine growth restriction (IUGR). METHODS: This was a prospective study in which uterine artery Doppler assessment was performed at 11-14 weeks in 3010 women with singleton pregnancies. Resistance indices (RI) ...
Robb Amy O - - 2009
Arterial stiffness and compliance are major predictors of adverse cardiovascular events and are influenced by female sex hormones, including estrogen and progesterone. The aim of this longitudinal study was to evaluate the effect of the menstrual cycle, normal pregnancy, and preeclampsia on central and systemic arterial stiffness. Ten healthy nulliparous ...
Delotte Jérôme - - 2009
Post-partum hemorrhage is an obstetrical emergency. Pelvic artery embolisation offers an alternative to surgical intervention and increases the rate of conservative treatment. The objective of this review was to study the scientific literature on obstetrical outcomes following uterine-sparing arterial embolisation performed for post-partum hemorrhage in a prior pregnancy. A Medline ...
Tan Shun-Jen - - 2010
Umbilical cord abnormalities are accepted as conditions associated with intrauterine fetal demise (IUFD), and umbilical cord stricture is most frequently encountered. In addition, although cord entanglement with multiple loops rarely increases the perinatal mortality, it is associated with a significant increase in variable kind of morbidity such as growth restriction. ...
Hellevik Leif Rune - - 2009
Pressure and flow pulsations in the fetal heart propagate through the precordial vein and the ductus venosus (DV) but are normally not transmitted into the umbilical vein (UV). Pulsations in the umbilical vein do occur, however, in early pregnancy and in pathological conditions. Such transmission into the umbilical vein is ...
van der Heijden Olivier W H - - 2009
The progressive rise in uterine blood flow (UBF) during pregnancy is accompanied by outward hypertrophic remodeling of the uterine artery (UA). After birth, UBF falls in concert with the sudden decline in uterine metabolic demands. Arterial remodeling associated with the reversal of increased blood flow has been described in large ...
Hoffman Camille - - 2009
PURPOSE OF REVIEW: Doppler ultrasound has become an indispensable tool in evaluating pregnancies at risk for conditions such as preeclampsia, intrauterine growth restriction, fetal anemia, and umbilical cord abnormalities. Use of umbilical artery, middle cerebral artery, and uterine artery Doppler has been the mainstay of assessment. RECENT FINDINGS: Recent findings ...
Ruma Michael S - - 2009
The objective of the study was to compare Doppler ultrasound measurements of the fetal middle cerebral artery peak systolic velocity (MCA-PSV) obtained at a 0 degrees angle of insonation to assessment at 30 degrees and 30 degrees with angle correction. Patients between 14 and 36 weeks' gestation were enrolled (n ...
Liao Adolfo Wenjaw - - 2009
OBJECTIVES: Evaluate the feasibility of transvaginal uterine artery Doppler examination in the first and second trimesters of pregnancy, establish reference ranges in a Brazilian population and examine the correlation between these Doppler findings. METHODS: Longitudinal prospective study at the antenatal clinic of a tertiary teaching hospital. Uterine artery Doppler examinations ...
Fiori Olivia - - 2009
OBJECTIVE: This study was to determine the long-term outcomes of arterial pelvic embolization for intractable postpartum hemorrhage and particularly its effect on menses, fertility, and outcomes of subsequent pregnancies. STUDY DESIGN: Fifty-six consecutive patients who underwent emergency pelvic arterial embolization for severe postpartum hemorrhage between April 1995 and July 2005 ...
Barbosa M M - - 2009
OBJECTIVES: To evaluate the prediction of acidemia at birth using cerebral transverse sinus (CTS) Doppler velocimetry and to determine the best parameter and cut-off values for its prediction in pregnancies complicated with placental insufficiency. METHODS: This was a prospective cross-sectional study involving 69 pregnant women (26-40 weeks' gestation) with placental ...
Ghosh G S - - 2009
OBJECTIVE: To compare umbilical and uterine artery Doppler in predicting outcome of pregnancies suspected of fetal growth restriction (FGR). DESIGN: A prospective study included 353 singleton pregnancies complicated by an FGR fetus. SETTING: University Hospital setting. SAMPLE: Pregnancies suspected of FGR diagnosed by ultrasound fetal biometry during a 5-year period. ...
Groom Katie M - - 2009
OBJECTIVES: To describe changes in mean uterine artery resistance index and bilateral notches between 20 and 24 weeks of gestation in healthy nulliparous women and to relate these changes to pregnancy outcome. METHODS: A total of 2,189 nulliparous participants in the Screening for Pregnancy Endpoints study had pregnancy outcomes compared ...
Walker Christopher - - 2009
BACKGROUND: Surveillance and identification of umbilical cord abnormalities is a challenging problem in obstetrics. Continuous fetal monitoring during active labor helps identify when danger exists for the fetus. CASE: A nullipara underwent emergent cesarean delivery for fetal distress and was found to have a fetus already separated from the completely ...
Gyselaers W W Department of Obstetrics & Gynaecology, Ziekenhuis Oost Limburg, Genk, Belgium. - - 2009
To define normal values of Renal interlobar vein impedance index (RIVI) throughout gestation, as a reference to RIVI in preeclampsia (PE). Longitudinal evaluation of 20 uncomplicated pregnancies (UP) by standard renal duplex scan, every 4 weeks during pregnancy and postpartum. Comparison of RIVI between 40 PE and UP, and plotting ...
Seto Sai Wang - - 2009
We investigated the role(s) of monoamine oxidases (MAOs) on the altered 5-hydroxytryptamine (5-HT, serotonin)-induced tension development of the isolated umbilical artery of preeclamptic pregnancy of Chinese women. An enhanced 5-HT-induced tension development of the umbilical artery of preeclamptic pregnancy was observed when compared with that of normal pregnancy. The enhanced ...
Kim Sun Kwon - - 2009
The fetal inflammatory response syndrome (FIRS) is present in a fraction of fetuses exposed to intra-amniotic infection and is associated with the impending onset of labor and multisystem organ involvement. Neonates born with funisitis, the histologic counterpart of fetal systemic inflammation, are at increased risk for cerebral palsy and bronchopulmonary ...
Ochshorn Yifat - - 2009
OBJECTIVE: To compare selected umbilical cord parameters, especially cord coiling, between breech and vertex presentations. METHODS: We prospectively collected umbilical cords from uncomplicated breech and vertex obtained during elective term cesarean deliveries. We compared various cord parameters between the two groups as well as data regarding obstetric history and pregnancy ...
Clark Erin A S - - 2009
OBJECTIVE: The purpose of this study was to determine the reliability of fetal middle cerebral artery (MCA) peak systolic velocity (PSV) measurements at a tertiary care center and to evaluate the effect of targeted training for sonographers. METHODS: Six sonographers were randomized to training modules for fetal MCA PSV or ...
Babovi? I - - 2009
AIM: The aim of the study was to assess the short-term effects of intramuscular (IM) corticosteroid therapy (CST) on fetoplacental and fetal circulation in high-risk pregnancies of preterm labor. METHOD: We evaluated the effect of IM fetal single-dose dexamethasone (4 mg/kg) on fetoplacental and fetal circulation two hours before and ...
Llurba Elisa - - 2009
Objective. To examine the value of one-step uterine artery Doppler at 20 weeks of gestation in the prediction pre-eclampsia (PE) and/or intrauterine growth restriction (IUGR). Methods. A prospective multicentre study that included all women with singleton pregnancies at 19-22 weeks of gestation (w). The mean pulsatility index (mPI) of both ...
Khoury Janette - - 2009
Abnormal hyperlipidemia characterizes pregnancy in familial hypercholesterolemia (FH), and is associated with vascular dysfunction. Hence, we compared blood flow in the feto- and uteroplacental circulation in FH and healthy reference women using Doppler velocimetry. The umbilical artery pulsatility index (PI) at gestational weeks 24 and 36, and the concomitant physiological ...
Spinillo Arsenio - - 2009
OBJECTIVE: To evaluate the prognostic significance of the interaction between umbilical artery (UA) and middle cerebral artery (MCA) Doppler measurements in pregnancies complicated by fetal growth restriction (FGR). DESIGN: Cohort study. SETTING: Third-level Perinatology Center in Northern Italy. POPULATION: A study of 184 singleton pregnancies at 24-35 weeks' gestational age ...
Goynumer G - - 2009
BACKGROUND: To establish the effect of parity on uteroplacental Doppler findings during midgestation in uncomplicated and low-risk pregnancies. METHODS: Color flow pulse Doppler imaging of uterine arteries was performed on 760 uncomplicated singleton pregnancies fulfilling the study criteria at 19-24 weeks of gestation. Pulsatility indices (PIs) and bilateral notching were ...
Sinkkonen Aki - - 2009
Typically, mammalian umbilical cord forms a tiny, stable, and asymmetrical scar. In contrast, humans have a clearly visible umbilicus that changes with age and nutrients gathered. Based on this, I propose that umbilicus, together with the surrounding skin area, is an honest signal of individual vigour. More precisely, I suggest ...
Gerards F A - - 2009
OBJECTIVE: The purpose of this study was to determine whether the pulsatility index (PI) of the ductus arteriosus could predict the occurrence of pulmonary hypoplasia secondary to congenital disorders or complications during pregnancy. SAMPLE AND METHODS: In this longitudinal study, 78 uncomplicated pregnancies and 43 pregnancies complicated by various disorders ...
Saemundsson Ymir - - 2009
OBJECTIVE: To investigate if placental Doppler velocimetry can predict the recurrence of a small-for-gestational age (SGA) fetus in subsequent pregnancies. DESIGN: Retrospective study. SETTING: City cohort over 15 years attending a university hospital. METHODS: A total of 196 pregnancies suspected of a SGA fetus (<3rd percentile) evaluated by uterine and ...
Karcaaltincaba Deniz - - 2009
OBJECTIVE: To investigate the relation between changes in Doppler parameters of fetal and uterine arteries and development of persistent non-reassuring fetal heart rate (FHR) pattern during induction of labor with dinoprostone (Propess) in pregnancies at >or=41 weeks gestation. DESIGN: Prospective cohort study. SETTING: Etlik Zubeyde Hanim Women's Hospital, Turkey. SAMPLE: ...
Tarzamni Mohammad-Kazem - - 2009
One of the main methods for evaluation of fetal well-being is analysis of Doppler flow velocity waveform of fetal vessels. Evaluation of Doppler wave of the middle cerebral artery can predict most of the at-risk fetuses in high-risk pregnancies. In this study, we tried to determine the normal ranges and ...
Zahumensky J - - 2009
The purpose of this study was to summarize the new published data on the Doppler flowmetry in preeclampsia. We summarize the new published data on the Doppler flowmetry in uteroplacental, fetoplacental and fetal circulation in preeclampsia. The present review summarized the results of clinical research on the Doppler flowmetry in ...
Grivell Rosalie M - - 2009
Policies and protocols for fetal surveillance in the pregnancy where impaired fetal growth is suspected vary widely, with numerous combinations of different surveillance methods. To assess the effects of antenatal fetal surveillance regimens on important perinatal and maternal outcomes. We searched the Cochrane Pregnancy and Childbirth Group's Trials Register (April ...
Nardozza Luciano Marcondes Machado - - 2009
We assessed the vascular indices of the anterior territory of the middle cerebral artery (MCA) in normal pregnancies using 3-D power Doppler (3DPD). A cross-sectional study was carried out on 90 normal pregnancies between 24 and 35 weeks. All examinations were performed by a single operator using a volumetric transducer. ...
Tepper Ronnie - - 2009
We sought to determine the incidence of cord entanglement around any part of fetal body during early gestation using three-dimensional (3D) sonography. A prospective consecutive study was designed and 3D ultrasound was performed. Two hundred thirty-seven singleton pregnancies between 13 and 16 weeks were included. Cord entanglement was defined when ...
van den Akker Chris H P - - 2009
BACKGROUND: Knowledge on human fetal amino acid (AA) metabolism, largely lacking thus far, is pivotal in improving nutritional strategies for prematurely born infants. Phenylalanine kinetics is of special interest as is debate as to whether neonates will adequately hydroxylate phenylalanine to the semiessential AA tyrosine. OBJECTIVE: Our aim was to ...
Blanco Paula G - - 2008
OBJECTIVE: The aim of this article is to review the current knowledge of Doppler ultrasound in canine pregnancy. A brief introduction of Doppler principles and their applications in human obstetrics is also included. METHODS: A review of the peer-reviewed published literature was conducted of the articles pertaining to the use ...
Poon Leona C Y - - 2008
OBJECTIVE: To investigate the pathogenesis of pregnancies delivering small for gestational age (SGA) neonates by examining biochemical and Doppler indices of placental development during the first trimester of pregnancy. METHOD: The concentration of placental growth factor (PlGF) at 11(+0)-13(+6) weeks was measured in 296 cases, which delivered SGA neonates, and ...
Galan Henry L - - 2009
OBJECTIVE: The purpose of this study was to assess the placental transport of the essential amino acids (EAAs) in normal pregnancies. STUDY DESIGN: Nine ((13)C or (2)H) EAAs were infused simultaneously as a bolus into the maternal circulation of 12 patients with uncomplicated pregnancy before cesarean delivery. Maternal samples were ...
Savvidou Makrina D - - 2008
Adiponectin and leptin, two adipose-tissue-derived proteins, have been reported to be elevated in women with established PE (pre-eclampsia). The aim of the present study was to investigate whether alterations in adiponectin and leptin levels predate the development of PE and FGR (fetal growth restriction) in women at increased risk of ...
Haapsamo M - - 2008
OBJECTIVE: To determine whether low-dose aspirin improves uteroplacental hemodynamics in unselected in-vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI) subjects when medication is started concomitantly with controlled ovarian hyperstimulation. METHODS: Thirty-seven pregnant women who had undergone IVF/ICSI and had been randomized to receive 100 mg aspirin (n = 17) or placebo (n = ...
Nardozza Luciano Marcondes Machado - - 2008
OBJECTIVE: To establish normative data for the peak systolic velocity of the middle cerebral artery (MCA-PSV) of fetuses in the second half of pregnancy using multiples of the median and percentile reference range. METHODS: A cross-sectional study was performed in 90 healthy fetuses at between 23 and 35 weeks of ...
Ferianec Vladimír - - 2008
OBJECTIVES: Intrauterine growth retardation (IUGR) is associated with fetal adverse conditions. The most important cause of growth restriction and poor perinatal outcome is chronic fetal hypoxemia (CFH). Adaptation to CFH can be studied by Doppler velocity waveform on umbilical and fetal arteries and cardiotocography (CTG). METHODS: Preterm delivery, as an ...
Abramowicz J S - - 2008
Doppler velocimetry is the ideal clinical tool to assess placental performance in high-risk pregnancies. It also has value in predicting later complications and outcome in pregnancies which appear uncomplicated. All three circulations (fetal, placental and maternal) may be interrogated by Doppler technology. In the following review, we present basic physics ...
Alves Sâmia K A - - 2008
OBJECTIVE: To evaluate the relationship between ductus venosus Doppler findings on the day of delivery and postnatal outcomes in pregnancies with absent or reversed end-diastolic (ARED) flow in the umbilical arteries. STUDY DESIGN: Postnatal outcomes of 103 newborns of pregnancies with a diagnosis of ARED flow on Doppler velocimetry of ...
Giannubilo Stefano R - - 2008
OBJECTIVE: To assess placental nitric oxide (NO) metabolism related to changes in the uteroplacental circulation during fetal growth restriction (FGR). METHODS: The resistance index (RI) from the uterine arteries and pulsatility index (PI) from the umbilical artery were determined by Doppler analysis in 15 patients with FGR and 12 healthy ...
Salomon Ophira - - 2009
OBJECTIVE: To discern whether plasma levels of microparticles (MPs) measured at 24 weeks of gestation predict late complications of pregnancy. DESIGN: Secondary analysis of samples obtained prospectively. SETTING: Large academic medical center. PATIENT(S): Two hundred sixty-two healthy women selected from 642 nulliparous women with singleton pregnancies. INTERVENTION(S): Sampling for blood ...
Gómez O - - 2008
OBJECTIVES: To construct gestational age (GA)-based reference ranges for the uterine artery (UtA) mean pulsatility index (PI) at 11-41 weeks of pregnancy. METHODS: A prospective cross-sectional observational study was carried out of 20 consecutive singleton pregnancies for each completed gestational week at 11-41 weeks. UtAs were examined by color and ...
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