The Experts below are selected from a list of 267 Experts worldwide ranked by ideXlab platform

A. Karowicz‐bilińska - One of the best experts on this subject based on the ideXlab platform.

  • P77The usefulness of uterine artery Doppler Velocimetry in the prediction of high risk pregnancy. I. Normal ranges
    Ultrasound in Obstetrics and Gynecology, 2000
    Co-Authors: Piotr Sieroszewski, J. Suzin, G. Surkont, A. Karowicz‐bilińska
    Abstract:

    Objective 1. To establish the value of Doppler ultrasound of the uterine artery in identyfying high risk pregnancies. 2. To assess the efficacy of prophylactic aspirin treatment in high risk pregnancies (abnormal uterine artery Doppler Velocimetry). 3. To show the efficacy of arginin treatment of IUGR fetuses in high risk pregnancies (abnormal uterine artery Doppler Velocimetry). I. Normal ranges of uterine artery Doppler Velocimetry Design and methods We studied 428 single normal pregnancies between 19 and 39 weeks. There were assessed S/D, RI & PI in both uterine arteries. We included results of singleton pregnancies where healthy babies were born. Results We assessed decreasing of S/D, RI & PI values with the progression of pregnancy. We did not find statistically significant differences between right & left uterine arteries. Conclusions 1. The uterine artery Velocimetry depends on gestational age – the values of S/D, RI, PI values decrease with the progression of gestation. 2. There are not significant differences between right and left uterine artery Doppler Velocimetry. We continue our studies. (KBN nr 4 P05E 01616 i 4 P05E 01717).

La Marcolino - One of the best experts on this subject based on the ideXlab platform.

  • The assessment of fetal well-being by venous Doppler Velocimetry
    The Ultrasound Review of Obstetrics and Gynecology, 2004
    Co-Authors: F A Prado Vasques, Antonio Fernandes Moron, Cgv Murta, Fhc Carvalho, Maurício Mendes Barbosa, La Marcolino
    Abstract:

    The assessment of fetal well-being by venous Doppler Velocimetry, especially in cases of intrauterine growth restriction, has been growing in importance as a number of researchers have been improving their studies 1  -  5 as well as a consequence of better technologies in ultrasound equipment. Since different authors have studied the fetal blood circulation with color Doppler, initially focusing their attention on the arterial system 6  -  12

Asaf Ferber - One of the best experts on this subject based on the ideXlab platform.

  • Umbilical artery Doppler Velocimetry--an update.
    Seminars in perinatology, 2001
    Co-Authors: Michael Y. Divon, Asaf Ferber
    Abstract:

    Doppler ultrasonography was introduced into clinical obstetric practice over 20 years ago. It is also accepted that a variety of common obstetrical complications such as preeclampsia and intrauterine growth restriction have their origin in abnormal development of the placental vasculature and this could be reflected in abnormal Doppler Velocimetry. Doppler Velocimetry of the umbilical artery has been the subject of multiple clinical studies but results have often been disputed due to differences in study populations and methodologies. In recent years, meta-analysis of randomized clinical trials have shown that incorporation of Doppler Velocimetry into clinical practice will reduce perinantal mortality in high-risk patients. This article reviews the data of the meta-analyses as it pertains to the management of high-risk pregnant patients.

S. Villa - One of the best experts on this subject based on the ideXlab platform.

  • P78Second trimester uterine artery Doppler Velocimetry in the prediction of poor perinatal outcome
    Ultrasound in Obstetrics and Gynecology, 2000
    Co-Authors: Hernán R. Muñoz, D. Veloso, Leible S, J. Jankelevich, R. Vonmullenbrock, M. Puga, S. Villa
    Abstract:

    Background The patients with an increase of resistance of uterine arteries in second trimester has between 5 and 8 times increased the risk of presenting adverse perinatal outcome. The objective is to evaluate the utility of uterine artery Doppler Velocimetry in the prediction of poor perinatal outcome. Method We performed a prospective study, in 512 consecutives pregnant women between 22 and 24 +6 weeks of pregnancy. Uterine artery Doppler Velocimetry was done in all patients using color Doppler duplex technique. The presence of notch or resistance index over 95 centile was defined as abnormal. Adverse perinatal outcome was defined as presence of preeclampsia, intrauterine growth retardation, and preterm delivery before 34 weeks of pregnancy. For statistical analysis non parametrics test and meta analisis model was used. Results Uterine artery Doppler Velocimetry was carried out in 512 patients, 198 was delivered. Resistance index was significantly higher in poor perinatal outcome group than in normal perinatal outcome group (Pulsatility index 1.38 vs. 0.9; P 

Hein W. Bruinse - One of the best experts on this subject based on the ideXlab platform.

  • A randomized controlled trial on the clinical value of umbilical Doppler Velocimetry in antenatal care
    American journal of obstetrics and gynecology, 1994
    Co-Authors: Anne-mieke W.j. Omtzigt, Paul Reuwer, Hein W. Bruinse
    Abstract:

    Abstract OBJECTIVE: Our aim was to assess the clinical value of umbilical Doppler Velocimetry with regard to maternal hospitalization policy, obstetric management, and perinatal outcome. STUDY DESIGN: We conducted a randomized controlled trial in a university hospital population. A total of 1598 women participated, of whom 809 were allocated to the Doppler group and 789 to the control group. In the Doppler group umbilical Doppler studies were performed only when indicated. Abnormal pulsatility index values prompted intensified (clinical) fetal monitoring. In the control group Doppler Velocimetry was not available. RESULTS: The use of umbilical Doppler Velocimetry did not show any clinical or economical benefit with regard to maternal admission rate and duration or neonatal admission policy and requirements of ventilatory support. Neither did the use of Doppler have any beneficial effect on obstetric management during labor and the occurrence of fetal distress during labor. In the control group a higher perinatal mortality rate was observed. In the Doppler group the risk ratio of perinatal mortality of fetuses and infants weighing ≥500 gm was 0.45 (95% confidence interval 0.21 to 0.94), as compared with the control group. Neonatal mortality was equal in both groups; therefore the reduction in perinatal mortality was not the result of a delay in timing of fetal death. CONCLUSION: Selective use of umbilical Doppler Velocimetry in pregnancies "at fetal risk" may be of benefit in antenatal care by a reduction of perinatal mortality and especially late fetal mortality. (AM J OBSTET GYNECOL 1994;170:625-34.)