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Uterine artery doppler ultrasound

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https://www.readbyqxmd.com/read/29319201/comparative-study-of-abdominal-versus-transvaginal-ultrasound-for-uterine-artery-doppler-velocimetry-at-11-to-13-weeks
#1
Marie-Elaine Demers, Samuel Dubé, Mélodie Bourdages, Cedric Gasse, Amélie Boutin, Mario Girard, Emmanuel Bujold, Suzanne Demers
OBJECTIVES: To compare the first-trimester uterine artery pulsatility index (PI) measured by abdominal and transvaginal ultrasound (US). METHODS: We performed a prospective study of singleton pregnant women recruited at 11 to 13 weeks' gestation. The mean uterine artery PI was obtained by abdominal followed by transvaginal US. The mean of the left and right uterine artery PIs was used, and differences between approaches were computed. The intraclass correlation coefficient and a Bland-Altman plot were used to compare the two approaches...
January 10, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29286461/ultrasonography-in-experimental-reproductive-investigations-on-rats
#2
Tianjuang Wang, Lidia Oltra-Rodríguez, Nuria García-Carrillo, Anibal Nieto, Yunxia Cao, María L Sánchez-Ferrer
With the development of assisted reproductive technology and the ethical limitations of research on humans, rat animal models have been widely used in reproductive medicine. In the past, the study of reproductive system development in rodents has been based on one-time histological examination of excised tissues. Recently, with the development of high-resolution transabdominal ultrasound, high-quality sonography can now be performed to evaluate the reproductive organs of rats, allowing a new method for studying the reproductive system...
December 2, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29196990/diagnostic-imaging-ultrasound
#3
Stefan C Kane, Su Lynn Khong, Fabricio da Silva Costa
Diagnostic ultrasound imaging, particularly that which includes pulsed wave Doppler interrogation, is a safe, real-time modality by which the risk of developing preeclampsia can be refined, and the effects of established disease can be assessed. This chapter outlines the rationale and technique for Doppler interrogation of the maternal ophthalmic and uterine arteries and grayscale imaging of the maternal optic nerve sheath diameter.
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29157099/the-association-of-first-trimester-uterine-arteries-doppler-velocimetry-with-different-clinical-phenotypes-of-hypertensive-disorders-of-pregnancy-a-longitudinal-study
#4
Tamara Stampalija, Lorenzo Monasta, Daniela D Di Martino, Mariachiara Quadrifoglio, Leila Lo Bello, Giuseppina D'Ottavio, Sara Zullino, Cristina Mastroianni, Daniela Casati, Valentina Signorelli, Eleonora Rosti, Vera Cecotti, Matteo Ceccarello, Enrico Ferrazzi
INTRODUCTION: Current classification of hypertensive disorders of pregnancy (HDP) is mostly based on temporal classification differentiating HDP according to early and late onset of the disease. However, epidemiological and clinical data suggest that there are two different clinical phenotypes of HDP that coexist at any gestational age: HDP associated to intrauterine growth restriction (HDP-IUGR) and HDP associated to appropriate for gestational age fetal growth (HDP-AGAf). The aim of the study was to evaluate the association of first trimester uterine arteries (UtA) by Doppler velocimetry, and maternal risk factors with HDP according to two different classifications: one based on gestational age at delivery (early- and late-HDP), and one based on longitudinal ultrasound evaluation of fetal growth (HDP-IUGR and HDP-AGAf), independently of the gestational age...
November 20, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29153362/in-vivo-assessment-of-placental-elasticity-in-intrauterine-growth-restriction-by-shear-wave-elastography
#5
Hatice Arioz Habibi, Ebru Alici Davutoglu, Sedat Giray Kandemirli, Mine Aslan, Aysegul Ozel, Ayse Kalyoncu Ucar, Pinar Zeytun, Riza Madazli, Ibrahim Adaletli
PURPOSE: In this study, we evaluated the placental elasticity in vivo by shear-wave elastography in pregnant women under follow-up for intrauterine growth restriction (IUGR) and compared the elasticity values to normal pregnancies. MATERIAL AND METHODS: This prospective study included 42 pregnant women with a possible diagnosis of intrauterine growth restriction based on obstetrical grayscale and Doppler ultrasonography and 42 women with a normal pregnancy during the 2nd and 3rd trimester...
December 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/29136193/early-first-trimester-uteroplacental-flow-and-the-progressive-disintegration-of-spiral-artery-plugs-new-insights-from-contrast-enhanced-ultrasound-and-tissue-histopathology
#6
V H J Roberts, T K Morgan, P Bednarek, M Morita, G J Burton, J O Lo, A E Frias
STUDY QUESTION: Does the use of a vascular contrast agent facilitate earlier detection of maternal flow to the placental intervillous space (IVS) in the first trimester of pregnancy? SUMMARY ANSWER: Microvascular filling of the IVS was demonstrated by contrast-enhanced ultrasound from 6 weeks of gestation onwards, earlier than previously believed. WHAT IS KNOWN ALREADY: During placental establishment and remodeling of maternal spiral arteries, endovascular trophoblast cells invade and accumulate in the lumen of these vessels to form 'trophoblast plugs'...
November 10, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29135072/measuring-human-placental-blood-flow-with-multidelay-3d-grase-pseudocontinuous-arterial-spin-labeling-at-3t
#7
Xingfeng Shao, Dapeng Liu, Thomas Martin, Teresa Chanlaw, Sherin U Devaskar, Carla Janzen, Aisling M Murphy, Daniel Margolis, Kyunghyun Sung, Danny J J Wang
BACKGROUND: Placenta influences the health of both a woman and her fetus during pregnancy. Maternal blood supply to placenta can be measured noninvasively using arterial spin labeling (ASL). PURPOSE: To present a multidelay pseudocontinuous arterial spin labeling (pCASL) combined with a fast 3D inner-volume gradient- and spin-echo (GRASE) imaging technique to simultaneously measure placental blood flow (PBF) and arterial transit time (ATT), and to study PBF and ATT evolution with gestational age during the second trimester...
November 14, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29124818/diagnosis-and-management-of-patients-with-enhanced-myometrial-vascularity-associated-with-retained-products-of-conception
#8
Yvette S Groszmann, Amie Lynn Healy Murphy, Beryl R Benacerraf
OBJECTIVES: We performed this study to assess the complication rate, including the estimated amount of blood loss, in patients who underwent dilation and curettage for treatment of retained products of conception with markedly enhanced myometrial vascularity mimicking arteriovenous malformations. METHODS: This is a retrospective medical records review study of patients with retained products of conception with enhanced myometrial vascularity presenting to our ultrasound unit between August 1, 2015 and August 1, 2017...
November 10, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28960414/intra-and-inter-observer-reproducibility-of-third-trimester-uterine-artery-pulsatility-index
#9
Laura Marchi, Claudia Gaini, Chiara Franchi, Federico Mecacci, Caterina Bilardo, Lucia Pasquini
OBJECTIVES: The primary aim of the study was to investigate intra- and inter-observer reproducibility of Uterine Artery (UtA) Pulsatility Index (PI) in the third trimester of pregnancy. The secondary aim of the study was to examine whether high maternal Body Mass Index (BMI) or gestational age (GA) influence the reliability of this measurement. METHODS: Singleton pregnancies in women with known BMI were recruited between 30(+0) and 40(+0) weeks. UtA PI Doppler measurements were performed prospectively, independently and blindly by two Fetal Medicine Foundation accredited operators...
September 27, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28884300/what-every-radiologist-should-know-about-adnexal-torsion
#10
Guillaume Ssi-Yan-Kai, Anne-Laure Rivain, Caroline Trichot, Marie-Chantal Morcelet, Sophie Prevot, Xavier Deffieux, Jocelyne De Laveaucoupet
Adnexal torsion is the fifth most common gynecologic surgical emergency, requiring clinician and radiologist awareness. It involves the rotation of the ovarian tissue on its vascular pedicle leading to stromal edema, hemorrhagic infarction, and necrosis of the adnexal structures with the subsequent sequelae. Expedient diagnosis poses a difficult challenge because the clinical presentation is variable and often misleading. Adnexal torsion can mimic malignancy as it can take a subacute, intermittent, or chronic course, and thereby can be complicated to diagnose...
September 7, 2017: Emergency Radiology
https://www.readbyqxmd.com/read/28868250/the-relationship-between-uterine-artery-two-dimensional-color-doppler-measurement-and-pregnancy-outcome-a-prospective-observational-study
#11
Sudha Prasad, Ritu Goyal, Yogesh Kumar, Poonam Nayar, Supriya Hajela, Aswathy Kumaran, Rajesh Vairagi, Shalini Chauhan
BACKGROUND: The purpose of the study was to evaluate the role of uterine blood flow parameters measured by uterine artery two-dimensional (2D)-power color doppler (PCD) ultrasound in predicting fertility outcomes in women undergoing IVF-ET cycles. METHODS: In this prospective observational study, a total of 188 infertile women who underwent IVF-ET cycles were investigated. Uterine artery 2D-PD measurements were taken during early follicular phase and on day of trigger...
April 2017: Journal of Reproduction & Infertility
https://www.readbyqxmd.com/read/28738721/the-clinical-value-of-maternal-and-fetal-doppler-parameters-in-low-risk-postdates-pregnancies-a-prospective-study
#12
Oshrit Lebovitz, Eran Barzilay, Shali Mazaki-Tovi, Itai Gat, Reuven Achiron, Yinon Gilboa
OBJECTIVE: The objective of this study is to determine the clinical significance of maternal and fetal ultrasound Doppler flow indices in postdates pregnancies. METHODS: This prospective study comprised 120 low-risk pregnant women beyond 40 weeks of gestation. All participants underwent Doppler assessment including of fetal middle cerebral artery (MCA), umbilical, and uterine arteries. Perinatal outcomes were recorded and evaluated for possible associations with Doppler flow values...
August 9, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28730844/correlation-between-uterine-artery-doppler-indices-and-menstrual-irregularities-among-levonorgestrel-releasing-intrauterine-system-and-depot-medroxyprogesterone-acetate-users-a-prospective-observational-study
#13
Mohamed Rezk, Alaa Al-Halaby, Mohamed Emarh, Mohamed Shawky
OBJECTIVE: To ascertain whether menstrual irregularities among users of levonorgestrel releasing intrauterine system (LNG-IUS) and depot medroxyprogesterone acetate (DMPA), were associated with changes in uterine artery Doppler indices or not. METHODS: This three-year prospective observational study included 102 women using LNG-IUS and 104 women using DMPA for contraception. Participants were followed at regular intervals over three years with performance of transvaginal ultrasound to measure uterine artery pulsatility index (PI) and resistance index (RI) before starting the method and at six months, 12 months, two and three years thereafter...
August 2017: European Journal of Contraception & Reproductive Health Care
https://www.readbyqxmd.com/read/28718893/association-between-maternal-vascular-murmur-and-the-small-for-gestational-age-fetus-with-abnormal-umbilical-artery-doppler-flow
#14
Diana Riknagel, Richard Farlie, Morten Hedegaard, Peter Humaidan, Johannes J Struijk
OBJECTIVE: To investigate the association between maternal vascular murmurs (MVMs) and fetal growth restriction (defined as small-for-gestational-age [SGA] fetus) and abnormal Doppler pulsatility index (PI) of the uterine and/or umbilical arteries. METHODS: A cross-sectional study of women aged 18 years or older with a singleton pregnancy at 28-34 weeks was conducted at Regional Hospital Viborg, Denmark, between May 1 and August 1, 2013. Ultrasound fetal biometry was performed and the Doppler PI of the umbilical and uterine arteries was determined...
November 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28714779/serum-free-placental-growth-factor-isoform-1-at-11-13-week-gestation-effects-of-maternal-factors-mean-arterial-pressure-placental-volume-and-uterine-artery-pulsatility-index
#15
Maolee Bhuwapathanapun, Busadee Pratumvinit, Piyaporn Lahfahroengron, Sithikan Hanyongyuth, Amprapha Phaophan, Julaporn Pooliam, Tuangsit Wataganara
INTRODUCTION: To define the effects of maternal factors, mean arterial pressure (MAP), placental volume (PV), and uterine artery Doppler pulsatility index (UtAPI) to serum level of free form of placental growth factor isoform 1 (free PlGF-1) measured with a novel automated assay. METHODS: We enrolled 200 Thai women singleton pregnancy from 11(+0) to 13(+6) weeks gestation with low prior risk maternal factors (age, parity, tobacco use, assisted reproductive technology, and body mass index)...
July 25, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28714317/prospective-observational-study-to-determine-the-accuracy-of-first-trimester-serum-biomarkers-and-uterine-artery-dopplers-in-combination-with-maternal-characteristics-and-arteriography-for-the-prediction-of-women-at-risk-of-preeclampsia-and-other-adverse-pregnancy
#16
Rebecca Allen, Joseph Aquilina
OBJECTIVES: To assess the efficacy of biomarkers, arteriography and uterine artery Dopplers for predicting hypertensive disease of pregnancy, small for gestational age (SGA) and stillbirth. METHODS: This was a prospective first-trimester study. Ultrasound was used to assess uterine artery Doppler. Maternal arteriography was performed and serum was taken for the measurement of placental growth factor (PlGF), alpha-fetoprotein (AFP), pregnancy-associated plasma protein (PAPP-A) and beta-human chorionic gonadotrophin levels...
August 3, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28679680/chronic-hypoxia-alters-maternal-uterine-and-fetal-hemodynamics-in-the-full-term-pregnant-guinea-pig
#17
Sifa Turan, Graham W Aberdeen, Loren P Thompson
Placental hypoxia is associated with maternal hypertension, placental insufficiency, and fetal growth restriction. In the pregnant guinea pig, prenatal hypoxia during early gestation inhibits cytotrophoblast invasion of spiral arteries, increases maternal blood pressure, and induces fetal growth restriction. In this study the impact of chronic maternal hypoxia on fetal heart structure was evaluated using four-dimensional echocardiography with spatiotemporal image correlation and tomographic ultrasound, and uterine and umbilical artery resistance/pulsatility indexes and fetal heart function were evaluated using pulsed-wave Doppler ultrasound...
October 1, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28632498/can-early-ultrasonography-explain-the-lower-miscarriage-rates-in-twin-as-compared-to-singleton-pregnancies-following-assisted-reproduction
#18
Ana Póvoa, Alexandra Matias, Pedro Xavier, Isaac Blickstein
OBJECTIVE: To compare first trimester 2D conventional and 3D power Doppler angiography measures in twins and singletons following assisted reproduction. METHODS: We prospectively evaluated 50 singleton and 47 twin pregnancies that eventually ended in live births. Patients were recruited from a single assisted reproductive technology (ART) center with standard treatment protocols. Obstetric ultrasound was performed at 8-9 weeks +6 days. Intervillous flow, uteroplacental circulation and uterine artery pulsatility (PI) and resistance index (RI) using two-dimensional (2D) ultrasound examination were evaluated...
June 20, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28596740/ultrasound-imaging-of-mouse-fetal-intracranial-hemorrhage-due-to-ischemia-reperfusion
#19
Kenichi Funamoto, Takuya Ito, Kiyoe Funamoto, Clarissa L Velayo, Yoshitaka Kimura
Despite vast improvement in perinatal care during the 30 years, the incidence rate of neonatal encephalopathy remains unchanged without any further Progress towards preventive strategies for the clinical impasse. Antenatal brain injury including fetal intracranial hemorrhage caused by ischemia/reperfusion is known as one of the primary triggers of neonatal injury. However, the mechanisms of antenatal brain injury are poorly understood unless better predictive models of the disease are developed. Here we show a mouse model for fetal intracranial hemorrhage in vivo developed to investigate the actual timing of hypoxia-ischemic events and their related mechanisms of injury...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28591361/doppler-velocimetry-in-fetal-rats-exposed-to-enoxaparin-and-unfractionated-heparin-ufh-during-pregnancy
#20
Flavio Renato de Almeida Senefonte, Ricardo Dutra Aydos, Vanessa Marcon de Oliveira, Marco Antonio Costa Bósio, Ernesto Antonio Figueiró-Filho
Purpose: To evaluate the effects of enoxaparin and unfractionated heparin (UFH) administered in prophylactic and therapeutic doses on fetal vessels in healthy pregnant Wistar rats, according to Doppler velocimetry measurements. Methods: Fifty animals were assigned to one of five groups: controls (saline), prophylactic and therapeutic enoxaparin (1 and 2 mg/kg/day, respectively), and prophylactic and therapeutic UFH (72 and 400 UI/kg/day, respectively). Uterine horns were examined by ultrasound for identification of live fetuses...
May 2017: Acta Cirúrgica Brasileira
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