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Fetal doppler velocimetry

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https://www.readbyqxmd.com/read/28153658/first-trimester-alcohol-exposure-alters-placental-perfusion-and-fetal-oxygen-availability-affecting-fetal-growth-and-development-in-a-non-human-primate-model
#1
Jamie O Lo, Matthias C Schabel, Victoria H J Roberts, Xiaojie Wang, Katherine S Lewandowski, Kathleen A Grant, Antonio E Frias, Christopher D Kroenke
BACKGROUND: Prenatal alcohol exposure leads to impaired fetal growth, brain development, and stillbirth. Placental impairment likely contributes to these adverse outcomes, but the mechanisms and specific vasoactive effects of alcohol that links altered placental function to impaired fetal development remain areas of active research. OBJECTIVE: Recently, we developed magnetic resonance imaging techniques in nonhuman primates to characterize placental blood oxygenation through measurements of T2* and perfusion using dynamic contrast-enhanced magnetic resonance imaging...
January 30, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28152557/perinatal-outcome-of-placental-massive-perivillous-fibrin-deposition-a-case-control-study
#2
Louise Devisme, Claire Chauvière, Hélène Franquet-Ansart, Anastasia Chudzinski, Morgane Stichelbout, Véronique Houfflin-Debarge, Damien Subtil
OBJECTIVE: To describe the obstetric outcomes associated with massive perivillous fibrin deposition (MFD) compared with a control series and to determine if outcome differs according to the extent of fibrin deposition. METHOD: Retrospective case-control study based on placentas analyzed over a consecutive 12-years period. MFD was considered severe if it extended over more than 50% of the placenta and moderate between 25 and 50%. RESULTS: During the study period, MFD was observed on 71 placentas, 39 severe and 32 moderate...
February 2, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28114884/everrest-prospective-study-a-6-year-prospective-study-to-define-the-clinical-and-biological-characteristics-of-pregnancies-affected-by-severe-early-onset-fetal-growth-restriction
#3
Rebecca Spencer, Gareth Ambler, Jana Brodszki, Anke Diemert, Francesc Figueras, Eduard Gratacós, Stefan R Hansson, Kurt Hecher, Angela Huertas-Ceballos, Neil Marlow, Karel Marsál, Eva Morsing, Donald Peebles, Carlo Rossi, Neil J Sebire, John F Timms, Anna L David
BACKGROUND: Fetal growth restriction (FGR) is a serious obstetric condition for which there is currently no treatment. The EVERREST Prospective Study has been designed to characterise the natural history of pregnancies affected by severe early onset FGR and establish a well phenotyped bio-bank. The findings will provide up-to-date information for clinicians and patients and inform the design and conduct of the EVERREST Clinical Trial: a phase I/IIa trial to assess the safety and efficacy of maternal vascular endothelial growth factor (VEGF) gene therapy in severe early onset FGR...
January 23, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/28103875/effects-of-plasmodium-falciparum-infection-on-umbilical-artery-resistance-and-intrafetal-blood-flow-distribution-a-doppler-ultrasound-study-from-papua-new-guinea
#4
Maria Ome-Kaius, Stephan Karl, Regina Alice Wangnapi, John Walpe Bolnga, Glen Mola, Jane Walker, Ivo Mueller, Holger Werner Unger, Stephen John Rogerson
BACKGROUND: Doppler velocimetry studies of umbilical artery (UA) and middle cerebral artery (MCA) flow help to determine the presence and severity of fetal growth restriction. Increased UA resistance and reduced MCA pulsatility may indicate increased placental resistance and intrafetal blood flow redistribution. Malaria causes low birth weight and fetal growth restriction, but few studies have assessed its effects on uteroplacental and fetoplacental blood flow. METHODS: Colour-pulsed Doppler ultrasound was used to assess UA and MCA flow in 396 Papua New Guinean singleton fetuses...
January 19, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28029583/acr-appropriateness-criteria-assessment-of-fetal-well-being
#5
Lynn Simpson, Nadia J Khati, Sandeep P Deshmukh, Kika M Dudiak, Mukesh G Harisinghani, Tara L Henrichsen, Benjamin J Meyer, David A Nyberg, Liina Poder, Thomas D Shipp, Carolyn M Zelop, Phyllis Glanc
Although there is limited evidence that antepartum testing decreases the risk for fetal death in low-risk pregnancies, women with high-risk factors for stillbirth should undergo antenatal fetal surveillance. The strongest evidence supporting antepartum testing pertains to pregnancies complicated by intrauterine fetal growth restriction secondary to uteroplacental insufficiency. The main ultrasound-based modalities to determine fetal health are the biophysical profile, modified biophysical profile, and duplex Doppler velocimetry...
October 28, 2016: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/27957524/fetal-hemodynamic-parameters-in-low-risk-pregnancies-doppler-velocimetry-of-uterine-umbilical-and-middle-cerebral-artery
#6
C O Figueira, F G Surita, M S Dertkigil, S L Pereira, J R Bennini, S S Morais, J Mayrink, J G Cecatti
Objective. To elaborate curves of longitudinal reference intervals of pulsatility index (PI) and systolic velocity (SV) for uterine (UtA), umbilical (UA), and middle cerebral arteries (MCA), in low risk pregnancies. Methods. Doppler velocimetric measurements of PI and SV from 63 low risk pregnant women between 16 and 41 weeks of gestational age. Means (±SD) for intervals of gestational age and percentiles 5, 50, and 95 were calculated for each parameter. The Intraclass Correlation Coefficients (ICC) were also estimated for assessing intra- and intervariability of measurements...
2016: TheScientificWorldJournal
https://www.readbyqxmd.com/read/27925050/fetal-thrombotic-vasculopathy-a-case-report-and-literature-review
#7
Ana Berquo Peleja, Silvio Martinelli, Renata Lopes Ribeiro, Roberto Eduardo Bittar, Regina Schultz, Rossana Pulcineli Vieira Francisco
Introduction: Fetal thrombotic vasculopathy is a recently described placental alteration with varying degrees of involvement and often associated with adverse perinatal outcomes. The diagnosis is made histologically and therefore is postnatal, which makes it a challenge in clinical practice. Method: Case report and review of literature on the subject. Results: The present case refers to a pregnant woman presenting fetal growth restriction, with poor obstetrical past, and sent late to our service...
October 2016: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/27651722/predictive-values-of-maternal-serum-papp-a-level-uterine-artery-doppler-velocimetry-and-fetal-biometric-measurements-for-poor-pregnancy-and-poor-neonatal-outcomes-in-pregnant-women
#8
Serdar Balcı
OBJECTIVE: To determine predictive values of maternal serum PAPP-A (msPAPP-A) levels, uterine artery Doppler velocimetry, and fetal biometric measurements (FBMs) for poor pregnancy and poor neonatal outcomes. MATERIAL AND METHODS: This prospective cohort study was conducted on singleton pregnancies followed until delivery. Pregnancy and neonatal outcomes were evaluated with respect to the msPAPP-A level at the 11(th)-14(th) weeks, uterine artery Doppler velocimetry at the 15(th)-18(th) weeks, and FBMs at the 20(th)-24(th) and 28(th)-32(nd) weeks of pregnancy...
2016: Journal of the Turkish German Gynecological Association
https://www.readbyqxmd.com/read/27651594/which-is-superior-doppler-velocimetry-or-non-stress-test-or-both-in-predicting-the-perinatal-outcome-of-high-risk-pregnancies
#9
Vijaya Subramanian, Janani Venkat, Mohana Dhanapal
AIM AND OBJECTIVES: To analyze which is superior, Doppler velocimetry or non-stress test or both by means of categorization into four groups and comparing the prediction of perinatal outcome in high-risk pregnancies like anemia, hypertensive disorders of pregnancies. MATERIALS AND METHODS: This was a prospective study conducted at the Department of Obstetrics and Gynaecology, ISO KGH, Madras Medical College, Chennai, in the year 2014. Two hundred high-risk pregnancies like anemia, hypertensive disorders of pregnancy were included in the study...
October 2016: Journal of Obstetrics and Gynaecology of India
https://www.readbyqxmd.com/read/27538552/maternal-and-fetal-doppler-velocimetry-in-women-diagnosed-with-fear-of-childbirth
#10
A N Aksoy, F Aydin, S K Kucur, I Gözükara
AIM: This study aimed to investigate maternal and fetal Doppler flow parameters in term pregnant women diagnosed with fear of childbirth (FOC). MATERIALS AND METHODS: Women between 20 and 40 years with full-term singleton pregnancies (≥37 gestational weeks) were included in the study. All patients were questioned with Turkish form of Wijma Delivery Expectancy/Experience Questionnaire (W-DEQ) version A. Women with W-DEQ scores ≥85 were defined as FOC. Forty women diagnosed with FOC (FOC group) and 45 women with W-DEQ scores <85 (control group) underwent Doppler waveform analysis and the pulsatility index (PI) and resistance index (RI) values for uterine, umbilical, and mid cerebral arteries were recorded...
September 2016: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/27533101/brain-volume-and-doppler-velocimetry-in-growth-restricted-small-for-gestational-age-and-appropriate-for-gestational-age-fetuses
#11
Hala A E Wahab Abdel Latif, Hassan Mostafa Gaafar, Ghada Abdel Fattah Abdel Moety, Doaa Salah Eldin Mahmoud, Nihal Mohamed El Rifai
Objectives This study aims to detect possible differences in fetal brain volumes between growth-restricted fetuses (FGR), small-for-gestational-age (SGA) fetuses with normal Doppler indices, and appropriate-for-gestational-age fetuses (AGA). Study Design Three-dimensional measurements of fetal brain volume and umbilical artery and middle cerebral artery (MCA) pulsatility index (PI) and resistance index (RI) were made in 80 AGA fetuses, 68 SGA fetuses with normal Doppler indices, and 68 FGR with brain-sparing effect between 32 and 36 weeks of gestation...
August 17, 2016: American Journal of Perinatology
https://www.readbyqxmd.com/read/27524445/perinatal-asphyxia-from-the-obstetric-standpoint-diagnosis-and-interventions
#12
REVIEW
Christina A Herrera, Robert M Silver
Perinatal asphyxia is a general term referring to neonatal encephalopathy related to events during birth. Asphyxia refers to a deprivation of oxygen for a duration sufficient to cause neurologic injury. Most cases of perinatal asphyxia are not necessarily caused by intrapartum events but rather associated with underlying chronic maternal or fetal conditions. Of intrapartum causes, obstetric emergencies are the most common and are not always preventable. Screening high-risk pregnancies with ultrasound, Doppler velocimetry, and antenatal testing can aid in identifying fetuses at risk...
September 2016: Clinics in Perinatology
https://www.readbyqxmd.com/read/27512094/numerical-investigation-of-the-hemodynamics-in-the-fetal-umbilical-vein-ductus-venosus-based-on-%C3%A2-experimental-data
#13
Taraneh Rezaee, Kamran Hassani
Abortion of the fetus due to a disease has been dramatically increased in the last decades. There is a still lack of knowledge on the various types of diseases which lead fetus to a vulnerable circumstance. The transport of oxygenated blood from the placenta to the human fetus has been an important clinical feature in Doppler velocimetry studies, especially the Ductus Venosus (DV). The DV connects intra-abdominal portion of the umbilical vein and the Inferior Vena Cava (IVC) at the inlet of the right atrium and is, therefore, important when examining the fetus state of health...
August 10, 2016: Bioscience Reports
https://www.readbyqxmd.com/read/27509872/can-maternal-fetal-hemodynamics-influence-prenatal-development-in-dogs
#14
Luana Azevedo de Freitas, Gustavo Lobato Mota, Herlon Victor Rodrigues Silva, Cibele Figueira Carvalho, Lúcia Daniel Machado da Silva
The goals of this study were to report embryonic and fetal ultrasound changes and compare blood flow of uteroplacental and umbilical arteries of normal and abnormal conceptus. Accordingly, from the day of mating or artificial insemination, all fetuses in 60 pregnancies were evaluated weekly. According to the ultrasound findings, the gestational age was determined and the conceptuses were divided into normal or abnormal (embryonic and fetal abnormalities). The two-dimensional ultrasound assessment consists of measuring and evaluating the echogenicity of conceptus and extra-fetal structures...
September 2016: Animal Reproduction Science
https://www.readbyqxmd.com/read/27442416/doppler-velocimetry-of-the-uterine-arteries-an-early-screening-test-for-miscarriage
#15
Ilian Trayanov, Elena Dimitrakova
INTRODUCTION: According to the WHO, miscarriage is defined as "the loss of a pregnancy before the age of 20 weeks of gestation or fetal weight below 500 g". Only 50-60% of all conceptions fail to survive 20 weeks of gestation. It is estimated that about 75% of all unsuccessful conceptions are due to failed implantation and are not reported as spontaneous abortions. MATERIAL AND METHODS: We performed a prospective observational study at the Department of Obstetrics and Gynecology of the Medical University Plovdiv between October 2014 and September 2015...
2016: Prilozi (Makedonska Akademija Na Naukite i Umetnostite. Oddelenie za Medicinski Nauki)
https://www.readbyqxmd.com/read/27438567/reduced-placental-volume-and-flow-in-severe-growth-restricted-fetuses
#16
Renata Montes Dourado Abulé, Lisandra Stein Bernardes, Giovana Farina Doro, Seizo Miyadahira, Rossana Pulcinelli Vieira Francisco
OBJECTIVES: To evaluate placental volume and vascular indices in pregnancies with severe fetal growth restriction and determine their correlations to normal reference ranges and Doppler velocimetry results of uterine and umbilical arteries. METHODS: Twenty-seven fetuses with estimated weights below the 3rd percentile for gestational age were evaluated. Placental volume and vascular indices, including vascularization, flow, and vascularization flow indices, were measured by three-dimensional ultrasound using a rotational technique and compared to a previously described nomogram...
July 2016: Clinics
https://www.readbyqxmd.com/read/27276861/doppler-changes-as-the-earliest-parameter-in-fetal-surveillance-to-detect-fetal-compromise-in-intrauterine-growth-restricted-fetuses
#17
Saloni Bansal, Deepika Deka, Vatsla Dhadwal, Rajiv Mahendru
INTRODUCTION: It is estimated that 3-10% of infants are growth restricted. Growth disturbances may have long-term issues. Doppler allows insight into the fetal response to intrauterine stress. OBJECTIVE: The aim of this study was to detect fetal compromise in intrauterine growth-restricted (IUGR) fetuses by means of biophysical profile (BPP) vis-à-vis Doppler velocimetry studies of the fetal umbilical artery, and to find out which of the two is a better and earlier predictor of fetal compromise...
January 2016: Srpski Arhiv za Celokupno Lekarstvo
https://www.readbyqxmd.com/read/27197939/use-of-doppler-velocimetry-in-diagnosis-and-prognosis-of-intrauterine-growth-restriction-iugr-a-review
#18
I Aditya, V Tat, A Sawana, A Mohamed, R Tuffner, T Mondal
Intrauterine growth restriction (IUGR) is a condition which has been difficult to assess at an early stage, resulting in the delivery of children who have poor genetic growth potential. Currently, IUGR classification is based upon the system of ultrasound biometry. Doppler velocimetry allows the measurement of hemodynamic flow of major fetal vessels, comparing the flow indices and patterns of normal and IUGR cases. In this review, the effectiveness of Doppler velocimetry in assessing blood flow in major vessels including the umbilical artery, ductus venosus, and middle cerebral artery was studied for both diagnostic and prognostic screening of IUGR...
May 18, 2016: Journal of Neonatal-perinatal Medicine
https://www.readbyqxmd.com/read/27103540/associations-of-maternal-personal-exposure-to-air-pollution-on-fetal-weight-and-fetoplacental-doppler-a-prospective-cohort-study
#19
Mariana A Carvalho, Lisandra S Bernardes, Karen Hettfleisch, Luciana D M Pastro, Sandra E Vieira, Silvia R D M Saldiva, Paulo H N Saldiva, Rossana P V Francisco
We determined the influence of maternal air pollution exposure during each trimester of pregnancy on fetal and birth weight and fetoplacental hemodynamics. In total, 366 women with singleton pregnancies were prospectively followed in the city of São Paulo, Brazil. Nitrogen dioxide (NO2) and ozone (O3) were measured during each trimester using passive personal samplers. We evaluated fetal weight and Doppler velocimetry data from the umbilical, middle cerebral, and uterine arteries in the 3rd trimester, and birth weight...
July 2016: Reproductive Toxicology
https://www.readbyqxmd.com/read/26961588/fetal-vascular-adaptation-before-and-after-treatment-of-severe-maternal-anemia-in-pregnancy
#20
Eram Ali, Manisha Kumar, Sayyed E H Naqvi, Shubha S Trivedi, Anuradha Singh
OBJECTIVES: To use color Doppler ultrasonography indices to study the effects on fetal circulation of treating severe maternal anemia. METHODS: A prospective cohort study enrolled patients who were at 30-34weeks of pregnancy and had hemoglobin levels below 70g/L between November 1, 2011 and March 31, 2013 at a hospital in New Delhi, India. A control group consisting of patients with the same duration of pregnancy and with hemoglobin levels above 110g/L was included...
June 2016: International Journal of Gynaecology and Obstetrics
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