scholarly journals Evaluation of the Relationship Between Placental Thickness and Obstetric Doppler Parameters During the Second Trimester

2019 ◽  
pp. 1
Author(s):  
Emine Aydin ◽  
Ayca Nazli Bulut
Keyword(s):  
Uterine Artery ◽  
Umbilical Artery ◽  
Resistance Index ◽  
Second Trimester ◽  
Uterine Artery Doppler ◽  
Diastolic Velocity ◽  
Single Operator ◽  
Umbilical Artery Doppler ◽  
Doppler Evaluation ◽  
Placental Thickness

<p><strong>OBJECTIVE:</strong> To determine whether there is a relationship between placental thickness and the umbilical artery and uterine artery Doppler evaluation in the second trimester. <br />STUDY DESIGN: The placental thickness and the umbilical artery and uterine artery Doppler evaluations were recorded by a single operator for patients who were admitted for an obstetric follow-up or fetal anatomy screening at 18-28 gestational weeks. The relation between these variables was investigated by evaluating the patients only once.</p><p><strong>RESULTS:</strong> In our study, the mean placental thickness was 31.7 (SD±8.01) mm. The umbilical artery Doppler parameters did not correlate with the placental thickness. The uterine artery Doppler systolic/diastolic velocity, Pulsatility index and Resistance index values positively correlated with the placental thickness. However, these correlations were not statistically significant. </p><p><strong>CONCLUSIONS:</strong> Although there was no relationship between the placental thickness and obstetric Doppler parameters in this study, we suggest that they are likely important factors and their significance should be evaluated in future studies </p>

Uterine and umbilical artery Doppler at 28 weeks for predicting adverse pregnancy outcomes in women with abnormal uterine artery Doppler findings in the early second trimester

2015 ◽  
Vol 35 (3) ◽  
pp. 294-298 ◽  
Author(s):  
Walter Ventura ◽  
Catalina De Paco Matallana ◽  
Maria Teresa Prieto-Sanchez ◽  
María Isabel Macizo ◽  
Miriam Pertegal ◽  
...  
Keyword(s):  
Pregnancy Outcomes ◽  
Uterine Artery ◽  
Umbilical Artery ◽  
Adverse Pregnancy Outcomes ◽  
Second Trimester ◽  
Uterine Artery Doppler ◽  
Umbilical Artery Doppler ◽  
Adverse Pregnancy

scholarly journals P08.21: Screening for pre-eclampsia by second trimester uterine artery Doppler evaluation

2012 ◽  
Vol 40 (S1) ◽  
pp. 203-204
Author(s):  
V. Stoykova ◽  
D. Markov ◽  
E. Pavlova ◽  
V. Djavolov ◽  
S. Ivanov
Keyword(s):  
Uterine Artery ◽  
Second Trimester ◽  
Uterine Artery Doppler ◽  
Doppler Evaluation

scholarly journals Doppler Velocimetry evaluation in high-risk pregnancy for prediction of Preeclampsia

2021 ◽  
Vol 12 (10) ◽  
pp. 135-141
Author(s):  
Rohini Singh ◽  
Sudipa Mondal ◽  
Manisha Bajaj ◽  
Debasmita Mandal
Keyword(s):  
High Risk ◽  
Uterine Artery ◽  
Umbilical Artery ◽  
Doppler Velocimetry ◽  
Third Trimester ◽  
Uterine Artery Doppler ◽  
Risk Pregnancy ◽  
Patients At Risk ◽  
Umbilical Artery Doppler ◽  
Doppler Indices

Background: The uterine and umbilical artery Doppler scan is a valuable tool for evaluation of utero-placental blood flow in pregnancy. They help in detecting uteroplacental insufficiency thus predicting preeclampsia and other effects of faulty placentation which increase the risk of adverse effects on both mother and fetus. Aims and Objective: This study aimed to evaluate and compare the uterine artery and umbilical artery Doppler indices in second and third trimester for prediction of preeclampsia in high-risk pregnancies. Materials and Methods: In this prospective observational study done over a years’ time, 50 high-risk pregnant mothers were recruited and the Doppler scans were done at 21-25 weeks and 31-35 weeks. The necessary clinical observations were recorded throughout the antenatal period and the data analysis was done. Results: Majority (56%) were in 20-29 years range with mean age of 24±6.1 years. Out of the 50 women, 21 had abnormal uterine artery Doppler and 12 had umbilical artery abnormality along with uterine derangement. Preeclampsia developed in 3 of them. The hypertensive disorders of pregnancy were diagnosed in 13 women, preeclampsia in 3, eclampsia in 1and other HDPs in 9. The persistence of notch in uterine artery was observed in 7 women, of these 2 developed PIH. Only one patient had uterine artery PI>1.45 at 24 weeks who subsequently developed preeclampsia. Among 4 patients of preeclampsia and eclampsia, 3 had 2nd trimester uterine and 3rd trimester umbilical Doppler abnormalities and only 1 had normal doppler indices. In 2nd trimester the sensitivity, specificity and PPV are higher for uterine artery PI as compared to umbilical artery PI. Hence, uterine artery doppler seems to be a better screening tool for early prediction of PIH. The third trimester umbilical artery PI with higher specificity (96%) and PPV (50%) can diagnose preeclampsia better. One patient had absent diastolic flow and she developed preeclampsia and IUGR. The combined uterine and umbilical artery doppler is a better screening modality as it has a higher sensitivity (75%) and NPV (99.26%). Conclusion: The uterine and umbilical artery Doppler velocimetry are potential tools for uteroplacental surveillance of high-risk pregnancies which can identify patients at risk and help in taking timely action to prevent complications.

Uterine artery Doppler wave form indices in the second trimester: Resistance index, notch measurement and placental position

1994 ◽  
Vol 14 (4) ◽  
pp. 237-243
Author(s):  
Claudia Ferrier ◽  
Robyn A. North ◽  
G. Becker ◽  
Diane Long ◽  
Juliene Hallo ◽  
...  
Keyword(s):  
Uterine Artery ◽  
Resistance Index ◽  
Wave Form ◽  
Second Trimester ◽  
Uterine Artery Doppler

scholarly journals Role of uterine and umbilical artery doppler assessment of the uteroplacental circulation in predicting pre-eclampsia: comparison between different doppler parameters

2017 ◽  
Vol 6 (10) ◽  
pp. 4314
Author(s):  
Vimla Dhakar ◽  
Sabiha Naz
Keyword(s):  
High Risk ◽  
Uterine Artery ◽  
Umbilical Artery ◽  
High Sensitivity ◽  
High Risk Pregnancy ◽  
Trophoblast Invasion ◽  
Uterine Artery Doppler ◽  
Risk Pregnancy ◽  
Doppler Study ◽  
Umbilical Artery Doppler

Background: Hypertensive disorders are the common cause of maternal death which affecting nearly 5-10% of pregnancies all over the world. Pre-eclampsia develop from inadequate trophoblast invasion of the maternal spiral arteries and Doppler values permits non-invasive evaluation of uteroplacental circulation and is of great importance in the management of high risk pregnancies. The aim of the study was to assess the findings of Doppler data in predicting pre-eclampsia and comparison of the efficacy of uterine artery Doppler and umbilical artery Doppler.Methods: The study comprises of 100 women with high risk pregnancy attending antenatal clinic at Geetanjali Medical College and Hospital, Udaipur were subjected to uterine and umbilical artery Doppler Study. Women with high risk pregnancy between 26-32 weeks of gestation were studied with colour Doppler. This was a prospective study over a period of 1 year from 2015-2016.Results: The results of the study revealed that 5 out of 100 participants developed pre-eclampsia. Out of different parameters, notch is the best predictor of pre-eclampsia with high sensitivity and highest PPV for uterine artery Doppler and S/D ratio is considered to be best indicator for umbilical artery Doppler. Regarding efficacy, umbilical artery Doppler is more predictive than uterine Doppler.Conclusions: Doppler study can be used for the prediction of pre-eclampsia to reduce maternal morbidity and mortality.

Developmental changes in hemodynamics of uterine artery, utero- and umbilicoplacental, and vitelline circulations in mouse throughout gestation

2006 ◽  
Vol 291 (3) ◽  
pp. H1421-H1428 ◽  
Author(s):  
Junwu Mu ◽  
S. Lee Adamson
Keyword(s):  
Uterine Artery ◽  
Umbilical Artery ◽  
Resistance Index ◽  
Peak Systolic Velocity ◽  
Normal Pregnancy ◽  
Ultrasound Biomicroscopy ◽  
Placental Development ◽  
Diastolic Velocity ◽  
Early Onset Preeclampsia ◽  
Arterial Canal

In human pregnancy, abnormal placental hemodynamics likely contribute to the etiology of early-onset preeclampsia and fetal intrauterine growth restriction. The mouse is increasingly being deployed to study normal and abnormal mammalian placental development, yet the placental hemodynamics in normal pregnancy in mice is currently unknown. We used ultrasound biomicroscopy to noninvasively image and record Doppler blood velocity waveforms from the maternal and embryonic placental circulations in mice throughout gestation. In the uterine artery, peak systolic velocity (PSV) increased significantly from 23 ± 2 (SE) to 59 ± 3 cm/s, and end-diastolic velocity (EDV) increased from 7 ± 1 to 28 ± 2 cm/s in nonpregnant versus full-term females so that the uterine arterial resistance index (RI) decreased from 0.70 ± 0.02 to 0.53 ± 0.02. Velocities in the maternal arterial canal in the placenta were low and nearly steady and increased from 0.9 ± 0.03 cm/s at embryonic day 10.5 (E10.5) to 2.4 ± 0.07 cm/s at E18.5. PSV in the umbilical artery increased steadily from 0.8 ± 0.1 cm/s at E8.5 to 15 ± 0.6 cm/s at E18.5, whereas PSV in the vitelline artery increased from 0.6 ± 0.1 cm/s at E8.5 to 4 ± 0.2 cm/s at E13.5 and then remained stable to term. In the umbilical artery, the EDV detection rate was 0% at ≤E14.5 and 94% at E18.5, and the RI decreased from 1 to 0.82 ± 0.01 during this interval. We conclude that ultrasound biomicroscopy can be used to monitor placental hemodynamics during pregnancy in mice. These results provide novel information concerning the development of the vitelline and placental circulations in mice and reveal strong similarities in placental hemodynamics between mice and humans.

Value of Third Trimester Uterine Artery Doppler in High-risk Pregnancies for Prediction of Adverse Perinatal Outcome

2010 ◽  
Vol 2 (1) ◽  
pp. 31-35 ◽  
Author(s):  
Lavanya Rai ◽  
S Lekshmi
Keyword(s):  
High Risk ◽  
Gestational Age ◽  
Perinatal Outcome ◽  
Uterine Artery ◽  
Umbilical Artery ◽  
Perinatal Morbidity ◽  
Third Trimester ◽  
Uterine Artery Doppler ◽  
Adverse Perinatal Outcome ◽  
Umbilical Artery Doppler

ABSTRACT Objective To determine the usefulness of uterine artery Doppler in evaluation of third trimester high-risk pregnancies in prediction of adverse perinatal outcome. Methods In this prospective study uterine artery Doppler parameters such as PI and early diastolic notch were recorded in a group of 60 high-risk pregnancies mainly consisting of pre-eclampsia and small for gestational age. Uterine artery score (UAS) was calculated from the Doppler parameters and a score ≥ 2 was considered abnormal. Perinatal outcome was then correlated to this score and compared with umbilical artery Doppler. Results Abnormal UAS was noted in 72% of the study group while umbilical artery Doppler was abnormal in only 35%. All the five perinatal deaths and high-rate of perinatal morbidity was observed when both uterine and umbilical artery Dopplers were abnormal. Perinatal morbidity parameters such as birth weight < 2 kg, gestational age < 34 weeks and NICU admission was significantly high in 23 women who had abnormal UAS with normal umbilical artery Doppler. In pregnancies beyond 34 weeks abnormal uterine artery Doppler was a better predictor of adverse outcome than umbilical artery Doppler. Conclusion Abnormal uterine artery Doppler is a reliable predictor of adverse perinatal outcome in high-risk pregnancies with preeclampsia and fetal growth restriction. Normal uterine artery Doppler in third trimester is reassuring. Thus inclusion of uterine artery Doppler along with umbilical artery Doppler in high-risk pregnancy in third trimester will improve fetal surveillance.

scholarly journals 633 Association of second-trimester uterine artery doppler abnormalities with maternal hypertension 2-7 years after delivery

2021 ◽  
Vol 224 (2) ◽  
pp. S397-S398
Author(s):  
Eliza C. Miller ◽  
Benjamin Carper ◽  
Natalie Bello ◽  
Noel Bairey Merz ◽  
Philip Greenland ◽  
...  
Keyword(s):  
Uterine Artery ◽  
Second Trimester ◽  
Uterine Artery Doppler ◽  
Maternal Hypertension
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