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Fetal doppler ultrasound

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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
#1
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/28091544/ultrasound-prediction-of-abnormal-infant-development-in-hypertensive-pregnant-women-in-the-second-and-third-trimester
#2
Guofang Shen, Yajuan Huang, Lixin Jiang, Jinghong Gu, Yaxin Wang, Bing Hu
The objective was to assess the sensitivities and accuracies of Doppler ultrasound parameters in the second and third trimester of hypertensive pregnancies in determining perinatal outcomes. 1,054 pregnancies were retrospectively categorized into three groups (healthy pregnancies (HP, n = 988), pregnancies of hypertensive women (HypP, n = 30) and high-risk hypertension pregnancies (HRHypP, n = 36), depending on gestational hypertension as well as fetal birth weights and pregnancy outcomes. Systolic/diastolic ratio (S/D), resistance index (RI), pulsatility index (PI) of the bilateral uterine artery, umbilical artery and vein as well as venous flow velocity data were monitored by Doppler ultrasound...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28079791/a-possible-new-approach-in-the-prediction-of-late-gestational-hypertension-the-role-of-the-fetal-aortic-intima-media-thickness
#3
Silvia Visentin, Ambrogio P Londero, Martina Camerin, Enrico Grisan, Erich Cosmi
The aim was to determine the predictive role of combined screening for late-onset gestational hypertension by fetal ultrasound measurements, third trimester uterine arteries (UtAs) Doppler imaging, and maternal history. This prospective study on singleton pregnancies was conducted at the tertiary center of Maternal and Fetal Medicine of the University of Padua during the period between January 2012 and December 2014. Ultrasound examination (fetal biometry, fetal wellbeing, maternal Doppler study, fetal abdominal aorta intima-media thickness [aIMT], and fetal kidney volumes), clinical data (mother age, prepregnancy body mass index [BMI], and parity), and pregnancy outcomes were collected...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28077838/low-grade-metabolically-induced-inflammation-mediators-interleukin-6-adiponectin-and-tnf-%C3%AE-serum-levels-in-obese-pregnant-patients-in-the-perinatal-period
#4
Malgorzata Zembala-Szczerba, Andrzej Jaworowski, Hubert Huras, Dorota Babczyk, Robert Jach
BACKGROUND Obesity is a major clinical problem. The number of obese pregnant women is rising rapidly. The consequences of obesity are significant and affect every aspect of perinatal care for both the mother and the developing fetus. Adipose tissue may be responsible for chronic subclinical inflammation in obesity, being a source of inflammatory mediators. The study was designed to evaluate the analysis of the serum concentration of inflammatory mediators, including interleukin-6 (IL-6), tumor necrosis factor alpha (TNF-α), and adiponectin, in obese pregnant women at full-term pregnancies...
January 12, 2017: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/28068394/prediction-of-small-for-gestational-age-infants-in-healthy-nulliparous-women-using-clinical-and-ultrasound-risk-factors-combined-with-early-pregnancy-biomarkers
#5
Lesley M E McCowan, John M D Thompson, Rennae S Taylor, Philip N Baker, Robyn A North, Lucilla Poston, Claire T Roberts, Nigel A B Simpson, James J Walker, Jenny Myers, Louise C Kenny
OBJECTIVE: Most small for gestational age pregnancies are unrecognised before birth, resulting in substantial avoidable perinatal mortality and morbidity. Our objective was to develop multivariable prediction models for small for gestational age combining clinical risk factors and biomarkers at 15±1 weeks' with ultrasound parameters at 20±1 weeks' gestation. METHODS: Data from 5606 participants in the Screening for Pregnancy Endpoints (SCOPE) cohort study were divided into Training (n = 3735) and Validation datasets (n = 1871)...
2017: PloS One
https://www.readbyqxmd.com/read/28052317/prenatal-prediction-of-significant-intertwin-birth-weight-discordance-using-standard-second-and-third-trimester-sonographic-parameters
#6
Mark P Hehir, Fionnuala M Breathnach, Jennifer L Hogan, Fionnuala M McAuliffe, Michael P Geary, Sean Daly, John Higgins, Alyson Hunter, John J Morrison, Gerard Burke, Rhona Mahony, Patrick Dicker, Elizabeth Tully, Fergal D Malone
INTRODUCTION: To evaluate standard ultrasound-derived fetal biometric parameters in the prediction of clinically significant intertwin birthweight discordance defined as ≥18%. MATERIAL AND METHODS: This was a secondary analysis of a prospective cohort study of 1,028 unselected twin pairs recruited over a two year period. Dichorionic twins underwent two-weekly ultrasonographic surveillance from 24 weeks' gestation, with surveillance of monochorionic twins two-weekly from 16 weeks...
January 4, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28040130/correlation-of-kisspeptin-10-level-and-fetal-well-being-in-preeclamptic-patients
#7
Maysoun A Ziyaraa, Farqad B Hamdan, Liqaa R Mousa
OBJECTIVE: This study aims to evaluate the role of kisspeptin-10 in preeclampsia and check for possible relationship between its severity and fetal growth well-being. Kisspeptin-10 may participate in implantation of the embryo, placenta formation, and maintenance of pregnancy. MATERIALS AND METHODS: One hundred women who completed 20 weeks of gestation with singleton pregnancies were divided into 60 peeclamptic and 40 normotensive control women. Kisspeptin-10 level estimation, and ultrasound and Doppler ultrasound studies for umbilical artery were performed during their second and third trimesters of pregnancy...
December 2016: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28029583/acr-appropriateness-criteria-assessment-of-fetal-well-being
#8
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/28027669/the-vertebroplacental-ratio-as-an-alternative-to-the-cerebroplacental-ratio-in-the-evaluation-of-the-fetus-at-the-end-of-pregnancy
#9
José Morales-Roselló, Asma Khalil, Victoria Fornes Ferrer, David Hervas-Marín, Nuria Peralta Llorens, Juan Rubio Moll, Alfredo Perales-Marín
OBJECTIVE: Low cerebroplacental ratio (CPR) near term has emerged as a marker of fetal adverse outcome. The aim of this study was to evaluate the predictive accuracy of an alternative ratio using the vertebral artery (vertebroplacental ratio or VPR) for acid-base status at birth. METHODS: This was a prospective cohort study of 1470 pregnancies undergoing an ultrasound assessment of the umbilical artery, middle cerebral artery and vertebral artery Doppler beyond 34 weeks' gestation within 14 days of delivery...
December 27, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28004439/prediction-of-fetal-growth-restriction-using-estimated-fetal-weight-versus-a-combined-screening-model-at-32-36-weeks-of-gestation
#10
Jezid Miranda, Merida Rodriguez-Lopez, Stefania Triunfo, Mikko Sairanen, Heikki Kouru, Miguel Parra-Saavedra, Francesca Crovetto, Francesc Figueras, Fatima Crispi, Eduard Gratacos
OBJECTIVES: To compare the performance of a third trimester screening based on estimated fetal weight (EFW) versus a combined model composed by maternal baseline characteristics, mean arterial pressure (MAP), ultrasound and biochemical markers for the prediction of smallness for gestational age (SGA) and late-onset fetal growth restriction (FGR). METHODS: Nested case-control study within a prospective cohort of 1,590 singleton gestations referred for third-trimester evaluation (32-36 weeks of gestation)...
December 22, 2016: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27974939/prenatal-ultrasound-diagnosis-and-pregnancy-outcome-of-umbilical-cord-knot-debate-regarding-ethical-aspects-of-a-series-of-cases
#11
Bohîlțea Re, Turcan N, Cîrstoiu M
True umbilical cord knot appears to be a relatively common complication that occurs in 0.3%-1.3% of all pregnancies and it is correlated with an increased incidence of SGA infants, premature birth, need for neonatal intensive care and fetal death. The aim of the article was to evaluate the incidence of the true umbilical cord knot in the University Emergency Hospital, Bucharest, for a period of 5 years and its association with premature birth, low birth weight, low Apgar score at 1 minute and the need for neonatal intensive care...
July 2016: Journal of Medicine and Life
https://www.readbyqxmd.com/read/27894704/antenatal-fetal-surveillance-in-multiple-pregnancies
#12
REVIEW
Dick Oepkes, Marieke Sueters
Multiple pregnancies occur either spontaneously or because of assisted reproduction techniques in 1-3% of pregnancies. The presence of more than one fetus in the womb is associated with a range of possible complications, both for the mother and fetuses. Early detection of these complications followed by timely and appropriate management will reduce the risk of adverse outcomes. The techniques, skills, and experience for timely detection of complications and managing them appropriately require sufficient training and exposure...
January 2017: Best Practice & Research. Clinical Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/27874184/antenatal-ultrasound-features-in-fetuses-with-gastroschisis-and-its-prediction-in-neonatal-outcome
#13
Jessica A Robertson, Roy M Kimble, Kellie Stockton, Renuka Sekar
BACKGROUND: Gastroschisis is the most common major congenital anomaly managed by paediatric surgeons. The significance of certain associated antenatal ultrasound features in determining fetal outcome is under discussion. AIM: The study aims to define if associated antenatal ultrasound features of gastroschisis are useful prognostic markers for fetal outcome. By establishing the significance of features, including extra- and intra-abdominal bowel dilatation, stomach herniation, stomach dilatation, bowel matting, growth restriction, abnormal umbilical artery (UA) Doppler ultrasounds, and abnormal amniotic fluid volume, it is hoped clinicians will have enhanced ability to counsel parents about the likely outcomes for their infant...
November 22, 2016: Australian & New Zealand Journal of Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/27862084/intra-and-inter-observer-reproducibility-and-generalizability-of-first-trimester-uterine-artery-pulsatility-index-by-transabdominal-and-transvaginal-ultrasound
#14
Laura Marchi, Eva Zwertbroek, Judith Snelder, Maaike Kloosterman, Caterina Maddalena Bilardo
OBJECTIVES: The primary aim of the study was to assess intra-observer and inter-observer reproducibility and generalizability (general reliability) of first trimester Doppler measurements of uterine arteries (UtA) performed both transabdominally (TA) and transvaginally (TV). Secondary aims were to investigate whether maternal BMI and acquisition modality (transabdominal or transvaginal) affect feasibility and reliability of UtA Doppler evaluation. METHODS: Singleton pregnancies between 11(+0) and 13(+6) weeks underwent TA and TV Doppler measurements of UtA prospectively, blindly and independently by Fetal Medicine Foundation-accredited operators...
December 2016: Prenatal Diagnosis
https://www.readbyqxmd.com/read/27858228/prenatal-diagnosis-of-abnormal-umbilical-cord-insertion-a-rare-case-of-furcate-insertion
#15
Yasuyuki Fujita, Yasuo Yumoto, Kiyoko Kato
Furcate insertion (FI) is an extremely rare abnormality of umbilical cord insertion. One of the complications associated with FI is hemorrhage from the umbilical vein at the site of FI of the umbilical cord, which can cause sudden intrauterine fetal death. Because of its rarity, no prenatal diagnosis of FI has been reported. A 31-year-old woman at 34 weeks' gestation was referred to us for suspected abnormal cord insertion. Ultrasonography showed normal fetal growth and amniotic fluid volume, with no fetal anomalies...
November 17, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/27845691/non-invasive-evaluation-of-placental-blood-flow-lessons-from-animal-models
#16
REVIEW
E Mourier, A Tarrade, J Duan, C Richard, C Bertholdt, M Beaumont, O Morel, P Chavatte-Palmer
In human obstetrics, placental vascularisation impairment is frequent as well as linked to severe pathological events (preeclampsia and intrauterine growth restriction), and there is a need for reliable methods allowing non-invasive evaluation of placental blood flow. Uteroplacental vascularisation is complex, and animal models are essential for the technical development and safety assessment of these imaging tools for human clinical use; however, these techniques can also be applied in the veterinary context...
March 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/27824565/visualization-of-small-diameter-vessels-by-reduction-of-incoherent-reverberation-with-coherent-flow-power-doppler
#17
You Leo Li, Dongwoon Hyun, Lotfi Abou-Elkacem, Juergen Karl Willmann, Jeremy J Dahl
Power Doppler (PD) imaging is a widely used technique for flow detection. Despite the wide use of Doppler ultrasound, limitations exist in the ability of Doppler ultrasound to assess slow flow in the small-diameter vasculature, such as the maternal spiral arteries and fetal villous arteries of the placenta and focal liver lesions. The sensitivity of PD in small vessel detection is limited by the low signal produced by slow flow and the noise associated with small vessels. The noise sources include electronic noise, stationary or slowly moving tissue clutter, reverberation clutter, and off-axis scattering from tissue, among others...
November 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/27813120/prediction-of-neonatal-outcome-of-ttts-by-fetal-heart-and-doppler-ultrasound-parameters-before-and-after-laser-treatment
#18
A Delabaere, F Leduc, Q Reboul, F Fuchs, S Wavrant, J C Fouron, F Audibert
OBJECTIVES: To determine the prognostic value of fetal Doppler and echocardiographic parameters for neonatal survival up to 30 days after laser coagulation in monochorionic pregnancies complicated by twin-twin transfusion syndrome (TTTS). METHODS: Fetal echocardiography and outcome data of consecutive cases of TTTS treated by laser were retrospectively reviewed. Hemodynamic and cardiac function parameters were collected before and after laser. RESULTS: Between February 2006 and January 2015, 106 fetoscopic laser were performed...
December 2016: Prenatal Diagnosis
https://www.readbyqxmd.com/read/27777190/-correlation-analysis-of-fetal-middle-cerebral-artery-peak-systolic-velocity-cardiothoracic-ratio-and-crown-rump-length-in-early-pregnancy
#19
Xu-Jie Deng, Cui-Hua Chen, Yu-Wen Qiu, Shu-Fang Xiao, Shu-Xin Liao, Mei Zhong, Fang Yang
OBJECTIVE: To explore the pattern of variations in middle cerebral artery peak systolic velocity (MCA PSV) and cardiothoracic ratio (CTR) during early pregnancy, establish their reference ranges and explore their correlation with the crown-rump length (CRL). METHODS: A total of 522 pregnant women with normal findings in antenatal examinations underwent routine color Doppler ultrasound examination to collect the data of MCA PSV, CTR and CRL. The reference ranges of MCA PSV and CTR for different CRL levels were established, and the correlation of MCA PSV and CTR with CRL was analyzed...
October 20, 2016: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/27775930/fetal-motion-estimation-from-noninvasive-cardiac-signal-recordings
#20
Hadis Biglari, Reza Sameni
Fetal motility is a widely accepted indicator of the well-being of a fetus. In previous research, it has be shown that fetal motion (FM) is coherent with fetal heart rate accelerations and an indicator for active/rest cycles of the fetus. The most common approach for FM and fetal heart rate (FHR) assessment is by Doppler ultrasound (DUS). While DUS is the most common approach for studying the mechanical activities of the heart, noninvasive fetal electrocardiogram (ECG) and magnetocardiogram (MCG) recording and processing techniques have been considered as a possible competitor (or complement) for the DUS...
November 2016: Physiological Measurement
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