Evaluar la capacidad de los índices de resistencia, pulsatilidad y notch bilateral para la predicción de preeclampsia en el estudio Doppler de arterias uterinas. Objetivo. Estudiar el papel del Doppler de las arterias uterinas como método de cribado para la predicción de preeclampsia. Tamizaje y prevención de pre-eclampsia guiado por Doppler de arterias uterinas : revisión sistemática de la literatura. Rev. chil. obstet. ginecol. [online].
|Published (Last):||8 August 2016|
|PDF File Size:||4.31 Mb|
|ePub File Size:||12.85 Mb|
|Price:||Free* [*Free Regsitration Required]|
New Doppler technique for assessing uteroplacental blood inflow. All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. In our study, as individual measurements, abnormal RI from umbilical artery, and altered PI from umbilical and middle cerebral arteries, were associated to PE; however, considering all the parameters reviewed in these arteries, the general results for each vessel did not show a prerclampsia between groups, suggesting that these individual parameters, but not the general Doppler US for argerias arteries, could be considered as indicators to evaluate the specific PE vascular alterations.
Doppler ultrasonography of the umbilical cord in normal pregnancy.
Uterine Artery Doppler in Screening for Preeclampsia and Fetal Growth Restriction.
Control of human trophoblast function. The role of color Doppler imaging of the uterine arteries at 20 weeks gestation in stratifying antenatal care.
In the fetal condition, the umbilical artery has been related typically to pregnancy outcome, while the middle cerebral artery has been considered as a fetal circulation marker and a useful non-invasive tool in risk assessment for fetal anemia [ 42 – 45 ].
Most of the patients were not on any treatment at the time of examination, the patients from the cases group with treatment, had been on it for less than 2 days. Uteroplacental and luteal circulation in normal first-trimester pregnancies: Worldwide pre-eclampsia PE is the first cause of maternal mortality, intrauterine growth retardation IUGRand fetal prematurity [ 12 ].
Maternal age, was the only characteristic with statistical difference among groups On the other hand, these results provide new information about the relevant US indicators for the pathology and it could contribute to generate more descriptive and accurate reports during the PE evaluation using Doppler assessment.
A study of placental bed spiral arteries and trophoblast invasion in normal and severe pre-eclamptic pregnancies. Uterine artery indexes and velocities indicators of uterine hypoperfusion in pregnant women with intrauterine growth restriction.
Intrauterine growth retardation—a prospective study of the diagnostic value of real-time sonography combined with umbilical artery flow velocimetry. Multiple pregnancies, pregnancies with structural or chromosomal fetus malformations, no feasibility to undergo the Doppler US test obesity, oligohydramnios, etc. The FMF calculator for estimation of risk of preeclampsia is available here.
In voppler study, maternal age was the only known PE risk factor with differences among groups [ 3637 ]. Br Preeclampsiz Obstet Gynaecol ; Curr Opin Obstet Gynecol. Comparative regional aretrias changes in human uterine artery before and during pregnancy. Principales medidas de resultados: Author information Article notes Copyright and License information Disclaimer. Mean gestational age for the IUGR and control groups were respectively Quinta El Sol Presclampsia and PI values above the 95 th percentile standardized for the gestational age were considered abnormal for the uterine and umbilical arteries, and below the 10 th percentile for the middle cerebral artery [ 2021 ].
Proportions of the most common abnormal US findings and their combinations for each artery. Discussion Most of reports related to PE evaluation by Doppler US have been focused on the study of the uterine artery and its parameters [ 22 – 24 ]; there are descriptive trials about the hemodynamic changes during pregnancy [ 25 ], studies to determine the normality ranges of the Doppler US values in some populations [ 2627 ], and reports in which the aim has been to get a spectral pattern of Doppler US to predict which pregnancies will evolve to PE [ 28 – 31 ].
Doppler blood flow in obstetrics. An evaluation of the efficacy of Doppler flow velocity waveform analysis as a screening test in pregnancy.
There was a problem providing the content you requested
Emnessa mesma linha de pesquisa, Liao et al. Color doppler imaging of the uterine artery in pregnancy: Doppler ultrasonographic and morphologic study. Maternal-fetal medicine, 4th, pp. Quarenta e quarto gestantes foram avaliadas, com idade de 18 a 35 anos.
Competing interests The authors declare that they have no competing interests. Arenas aJ. Br J Obstet Gynaecol, 92pp. Considering the Doppler US findings for motherhood status, from individual parameters evaluated in the uterine artery, N showed to be the preeflampsia meaningful but not the most frequent individual finding, due to the fact that its presence was restricted to the cases group.
A longitudinal study of quantitative uterine blood flow with the use of color power angiography in appropriate for gestational age pregnancies.
Study of the metabolic clearance rate of dehydroisoandrosterone sulfate in pregnancy. Doppler investigation of uteroplacental blood flow resistance in the second trimester: Placental bed spiral arteries in the hypertensive disorders of pregnancy.
Uteroplacental blood flow velocity-time waveforms in normal and complicated pregnancy. A prospective analysis of the role of uterine artery Doppler waveform notching in the assessment of at-risk pregnancies. Early pregnancy changes in hemodynamics and volume homeostasis are consecutive adjustments triggered by a primary fall in systemic vascular tone.
Gestational age weeks, median range. Doppler ultrasound of the uterine arteries: Blood velocity waveforms from uterine, umbilical, and middle cerebral arteries, in pregnancies from 24 to 37 weeks of gestation were recorded by trans-abdominal examination with a Toshiba Ultrasound Power Vision SSAA, with a 3. Between [uly and April Doppler ultrasound of the uterine arteries was performed in pregnant women participating in the study and uterine arteries indexes and velocities were calculated; media were compared and RCIU diagnosis validity tests were performed.
Doppler ultrasound evaluation in preeclampsia
Establishment of uteroplacental circulation. The results were documented on a record sheet designed for the study, as well as in the clinical record of each patient.
Relationship between second trimester maternal serum alpha-fetoprotein and umbilical artery doppler velocimetry and their association with preterm delivery.