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Fetal doppler ultrasound

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https://www.readbyqxmd.com/read/28738721/the-clinical-value-of-maternal-and-fetal-doppler-parameters-in-low-risk-postdates-pregnancies-%C3%A2-a-prospective-study
#1
Oshrit Lebovitz, Eran Barzilay, Shali Mazaki-Tovi, Itai Gat, Reuven Achiron, Yinon Gilboa
OBJECTIVE: 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. Adverse perinatal outcomes were defined as umbilical cord arterial pH < 7...
July 24, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28718893/association-between-maternal-vascular-murmur-and-the-small-for-gestational-age-fetus-with-abnormal-umbilical-artery-doppler-flow
#2
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...
July 18, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28708246/three-dimensional-power-doppler-evaluation-of-cerebral-vascular-blood-flow-a-novel-tool-in-the-assessment-of-fetal-growth-restriction
#3
Katherine R Goetzinger, Alison G Cahill, Linda Odibo, George A Macones, Anthony O Odibo
OBJECTIVES: To determine whether fetuses with fetal growth restriction (FGR) are more likely to have abnormal cerebral vascular flow patterns compared to fetuses who are appropriate for gestational age (AGA) when quantified by using 3-dimensional (3D) power Doppler ultrasound. METHODS: We conducted a prospective cohort study of singleton gestations presenting for growth ultrasound examination between 24 and 36 weeks' gestation. Patients with FGR (estimated fetal weight < 10th percentile) were enrolled and matched 1:1 for gestational age (±7 days) with AGA fetuses...
July 14, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28700818/fetal-mca-doppler-to-time-intrauterine-transfusions-in-red-cell-alloimmunisation-a-randomised-trial
#4
Jodie M Dodd, Chad Andersen, Jan E Dickinson, Jennie Louise, Andrea Deussen, Rosalie M Grivell, Liliana Voto, Mark D Kilby, Rory Windrim, Greg Ryan
OBJECTIVES: Red cell alloimmunisation affects up to 0.6% of all live births, and can be successfully treated with intrauterine fetal blood transfusion. Fetal middle cerebral artery (MCA) Doppler peak systolic velocity (PSV) is a non-invasive test, to identify fetal anaemia and requiring intrauterine transfusion (IUT). Traditionally, timing of subsequent IUTs has involved estimating a fall in fetal haematocrit of 1% per day, or a fall in fetal haemoglobin of 0.3 g/dL per day. The aim of this pragmatic multi-centre randomised trial was to evaluate whether Doppler MCA-PSV in the fetus that has undergone one IUT for anaemia secondary to red cell alloimmunisation was non-inferior to timing IUT by timing based on predicting the fall in fetal haematocrit or fetal haemoglobin, without compromising infant haemoglobin at birth...
July 12, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28679680/chronic-hypoxia-alters-maternal-uterine-and-fetal-hemodynamics-in-the-term-pregnant-guinea-pig
#5
Shifa 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. This study evaluated the impact of chronic maternal hypoxia on fetal heart structure with 4D echocardiography with spatio-temporal image correlation and tomographic ultrasound (STIC-TUI) and uterine and umbilical artery resistance/pulsatility indices and fetal heart function using pulsed wave Doppler ultrasound...
July 5, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28660654/teleultrasound-how-accurate-are-we
#6
Nader Z Rabie, Adam T Sandlin, Kevin A Barber, Songthip Ounpraseuth, Wendy Nembhard, Everett F Magann, Curtis Lowery
OBJECTIVES: Ultrasound serves an important role in the prenatal diagnosis of fetal structural anomalies. Recently, there has been increased use of teleultrasound protocols. We aimed to evaluate the sensitivity and accuracy of teleultrasound. METHODS: We conducted an Institutional Review Board-approved retrospective cohort study determining the sensitivity and accuracy of teleultrasound. In addition, we evaluated the number of ultrasound examinations required to complete an anatomic survey...
June 29, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28651459/-examination-of-placental-three-dimensional-power-doppler-indices-and-perinatal-outcome-in-pregnancies-complicated-by-intrauterine-growth-restriction
#7
András Molnár, Andrea Surányi, Mária Jakó, Tibor Nyári, Gábor Németh
INTRODUCTION: Development of intrauterine growth restriction (IUGR) can be traced back to maternal or fetal factors, but in many cases we find placental factors (reduced placental circulation) in the background. AIM: Our aim was to examine whether the reduced placental bloodperfusion and vascularity show any correlation with cesarean section frequency and the clinical outcome in IUGR pregnancies. The aim of the present study was also to use a properly calibrated and reproducible method for evaluating placental blood flow, that can later be incorporated into the routine examination...
July 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28643667/can-we-perform-a-prenatal-diagnosis-of-vasa-previa-to-improve-its-obstetrical-and-neonatal-outcomes
#8
E Nohuz, E Boulay, D Gallot, D Lemery, F Vendittelli
INTRODUCTION: Vasa previa (VP) is defined as a condition in which the fetal blood vessels, unsupported by the placenta or the umbilical cord, run through the membranes of the lower uterine segment. It is associated with a high risk of stillbirth by exsanguination. This study aimed to assess the clinical context of diagnosis of VP in order to elaborate a strategy for its prenatal diagnosis and to improve its obstetrical and neonatal outcomes. MATERIAL AND METHODS: This historical cohort study covered the period from January 1, 2011 to December 31, 2015...
April 2017: Journal of gynecology obstetrics and human reproduction
https://www.readbyqxmd.com/read/28637734/pregnancy-specific-stress-fetoplacental-haemodynamics-and-neonatal-outcomes-in-women-with-small-for-gestational-age-pregnancies-a-secondary-analysis-of-the-multicentre-prospective-observational-trial-to-optimise-paediatric-health-in-intrauterine-growth-restriction
#9
Terri A Levine, Ruth E Grunau, Ricardo Segurado, Sean Daly, Michael P Geary, Mairead M Kennelly, Keelin O'Donoghue, Alyson Hunter, John J Morrison, Gerard Burke, Patrick Dicker, Elizabeth C Tully, Fergal D Malone, Fiona A Alderdice, Fionnuala M McAuliffe
OBJECTIVES: To examine associations between maternal pregnancy-specific stress and umbilical (UA PI) and middle cerebral artery pulsatility indices (MCA PI), cerebroplacental ratio, absent end diastolic flow (AEDF), birthweight, prematurity, neonatal intensive care unit admission and adverse obstetric outcomes in women with small for gestational age pregnancies. It was hypothesised that maternal pregnancy-specific stress would be associated with fetoplacental haemodynamics and neonatal outcomes...
June 21, 2017: BMJ Open
https://www.readbyqxmd.com/read/28635180/renal-vascularization-indexes-and-fetal-hemodynamics-in-fetuses-with-growth-restriction
#10
Giovana Farina Doro, Janaína Campos Senra, Agatha Sacramento Rodrigues, Seizo Miyadahira, Renata Lopes Ribeiro, Rossana Pulcinelli Vieira, Lisandra Stein Bernardes
OBJECTIVE: To identify the correlation between the renal vascularization index (VI), the flow index (FI) and the vascularization and flow index (VFI) and placental and fetal hemodynamics in fetuses with growth restriction. METHOD: Bidimensional ultrasound and three-dimensional power Doppler with the VOCAL technique were used to determine the renal vascular indexes and fetal and placental hemodynamics in fetuses below the 10(th) percentile for fetal weight. Partial correlation analysis (controlled for renal depth and gestational age) was performed...
June 20, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28619771/revealed-versus-concealed-criteria-for-placental-insufficiency-in-an-unselected-obstetric-population-in-late-pregnancy-ratio37-randomised-controlled-trial-study-protocol
#11
Francesc Figueras, Eduard Gratacos, Marta Rial, Ilan Gull, Ladislav Krofta, Marek Lubusky, Rogelio Cruz-Martinez, Mónica Cruz-Lemini, Miguel Martinez-Rodriguez, Pamela Socias, Cristina Aleuanlli, Mauro C Parra Cordero
INTRODUCTION: Fetal growth restriction (FGR) affects 5%-10% of all pregnancies, contributing to 30%-50% of stillbirths. Unfortunately, growth restriction often is not detected antenatally. The last weeks of pregnancy are critical for preventing stillbirth among babies with FGR because there is a pronounced increase in stillbirths among growth-restricted fetuses after 37 weeks of pregnancy. Here we present a protocol (V.1, 23 May 2016) for the RATIO37 trial, which evaluates an integrated strategy for accurately selecting at-risk fetuses for delivery at term...
June 15, 2017: BMJ Open
https://www.readbyqxmd.com/read/28619691/a-mouse-model-of-antepartum-stillbirth
#12
Anum Rahman, Lindsay S Cahill, Yu-Qing Zhou, Johnathan Hoggarth, Monique Y Rennie, Mike Seed, Christopher K Macgowan, John C Kingdom, S Lee Adamson, John G Sled
BACKGROUND: Many stillbirths of normally formed fetuses in the third trimester could be prevented via delivery if reliable means to anticipate this outcome existed. However, because the etiology of these stillbirths is often unexplained and although the underlying mechanism is presumed to be hypoxia from placental insufficiency, the placentas often appear normal on histopathological examination. Gestational age is a risk factor for antepartum stillbirth, with a rapid rise in stillbirth rates after 40 weeks' gestation...
June 12, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28618098/pre-labor-fetal-cardiac-function-and-its-relationship-with-intrapartum-fetal-compromise-and-neonatal-status-at-term
#13
Amal A Alsolai, Larissa N Bligh, Ristan M Greer, Sailesh Kumar
OBJECTIVES: To prospectively investigate the relationship between fetal cardiac function and Doppler parameters with intrapartum fetal compromise (IFC) in term appropriately grown fetuses prior to labour. Secondary outcomes were to correlate prenatal cardiac function with neonatal acid base status, intrapartum fetal heart rate abnormalities adverse neonatal outcomes. METHODS: This was a blinded, prospective, observational, cohort study, at the Mater Mother's Hospital, Brisbane, Australia...
June 15, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28613398/fetal-and-umbilical-doppler-ultrasound-in-high-risk-pregnancies
#14
REVIEW
Zarko Alfirevic, Tamara Stampalija, Therese Dowswell
BACKGROUND: Abnormal blood flow patterns in fetal circulation detected by Doppler ultrasound may indicate poor fetal prognosis. It is also possible that false positive Doppler ultrasound findings could lead to adverse outcomes from unnecessary interventions, including preterm delivery. OBJECTIVES: The objective of this review was to assess the effects of Doppler ultrasound used to assess fetal well-being in high-risk pregnancies on obstetric care and fetal outcomes...
June 13, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28596740/ultrasound-imaging-of-mouse-fetal-intracranial-hemorrhage-due-to-ischemia-reperfusion
#15
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
#16
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
https://www.readbyqxmd.com/read/28580445/association-of-maternal-and-umbilical-cord-blood-leptin-concentrations-and-abnormal-color-doppler-indices-of-umbilical-artery-with-fetal-growth-restriction
#17
Elahe Zareaan, Mitra Heidarpour, Elham Kargarzadeh, Maryam Moshfeghi
BACKGROUND: Fetal growth restriction (FGR) is a condition with heterogeneous pathophysiology which characterized by fetal weight less than the tenth percentile for gestational age. Several factors have impact on maternal, placental and fetal due to growth restriction. OBJECTIVE: The aim of this study was to investigate the relationship between levels of leptin in the cord, and serum leptin of mothers also abnormal color Doppler indices of umbilical artery with fetal growth restriction...
March 2017: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/28570613/clinical-ultrasound-and-molecular-biomarkers-for-early-prediction-of-large-for-gestational-age-infants-in-nulliparous-women-an-international-prospective-cohort-study
#18
Matias C Vieira, Lesley M E McCowan, Alexandra Gillett, Lucilla Poston, Elaine Fyfe, Gustaaf A Dekker, Philip N Baker, James J Walker, Louise C Kenny, Dharmintra Pasupathy
OBJECTIVE: To develop a prediction model for term infants born large for gestational age (LGA) by customised birthweight centiles. METHODS: International prospective cohort of nulliparous women with singleton pregnancy recruited to the Screening for Pregnancy Endpoints (SCOPE) study. LGA was defined as birthweight above the 90th customised centile, including adjustment for parity, ethnicity, maternal height and weight, fetal gender and gestational age. Clinical risk factors, ultrasound parameters and biomarkers at 14-16 or 19-21 weeks were combined into a prediction model for LGA infants at term using stepwise logistic regression in a training dataset...
2017: PloS One
https://www.readbyqxmd.com/read/28567021/assessment-of-fetal-development-using-cardiac-valve-intervals
#19
Faezeh Marzbanrad, Ahsan H Khandoker, Yoshitaka Kimura, Marimuthu Palaniswami, Gari D Clifford
An automated method to assess the fetal physiological development is introduced which uses the component intervals between fetal cardiac valve timings and the Q-wave of fetal electrocardiogram (fECG). These intervals were estimated automatically from one-dimensional Doppler Ultrasound and noninvasive fECG. We hypothesize that the fetal growth can be estimated by the cardiac valve intervals. This hypothesis was evaluated by modeling the fetal development using the cardiac intervals and validating against the gold standard gestational age identified by Crown-Rump Length (CRL)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28559852/is-abdominal-fetal-electrocardiography-an-alternative-to-doppler-ultrasound-for-fhr-variability-evaluation
#20
Janusz Jezewski, Janusz Wrobel, Adam Matonia, Krzysztof Horoba, Radek Martinek, Tomasz Kupka, Michal Jezewski
Great expectations are connected with application of indirect fetal electrocardiography (FECG), especially for home telemonitoring of pregnancy. Evaluation of fetal heart rate (FHR) variability, when determined from FECG, uses the same criteria as for FHR signal acquired classically-through ultrasound Doppler method (US). Therefore, the equivalence of those two methods has to be confirmed, both in terms of recognizing classical FHR patterns: baseline, accelerations/decelerations (A/D), long-term variability (LTV), as well as evaluating the FHR variability with beat-to-beat accuracy-short-term variability (STV)...
2017: Frontiers in Physiology
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