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Amniotic fluid ultrasound

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https://www.readbyqxmd.com/read/29129159/third-trimester-ultrasound-accuracy-and-delivery-outcome-in-obese-and-morbid-obese-pregnant-women
#1
Sawsan Al-Obaidly, Abdullah Al-Ibrahim, Najah Saleh, Mariam Al-Belushi, Zeena Al-Mansouri, Najat Khenyab
OBJECTIVE: Several studies have highlighted the negative impact of maternal obesity on ultrasound accuracy for fetal weight estimation (EFW). However, the evidence is conflicting. We aimed in our study to find if the ultrasound accuracy for fetal weight estimation would differ or decrease in obese and morbid obesity classes. In addition to study the mode of delivery within the same cohort. METHODS: It's a retrospective study of obese patients with recorded BMI ≥ 30 kg/m(2), class I and II (BMI 30-39...
November 12, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29060160/automatic-fetal-body-and-amniotic-fluid-segmentation-from-fetal-ultrasound-images-by-encoder-decoder-network-with-inner-layers
#2
Yan Li, Rong Xu, Jun Ohya, Hiroyasu Iwata
This paper explores the effectiveness of applying a deep learning based method to segment the amniotic fluid and fetal tissues in fetal ultrasound (US) images. The deeply learned model firstly encodes the input image into down scaled feature maps by convolution and pooling structures, then up-scale the feature maps to confidence maps by corresponded un-pooling and convolution layers. Additional convolution layers with 1×1 sized kernels are adopted to enhance the feature representations, which could be used to further improve the discriminative learning of our model...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29046733/mosaic-genome-wide-maternal-isodiploidy-an-extreme-form-of-imprinting-disorder-presenting-as-prenatal-diagnostic-challenge
#3
Susanne Bens, Manuel Luedeke, Tanja Richter, Melanie Graf, Julia Kolarova, Gotthold Barbi, Krisztian Lato, Thomas F Barth, Reiner Siebert
BACKGROUND: Uniparental disomy of certain chromosomes are associated with a group of well-known genetic syndromes referred to as imprinting disorders. However, the extreme form of uniparental disomy affecting the whole genome is usually not compatible with life, with the exception of very rare cases of patients with mosaic genome-wide uniparental disomy reported in the literature. RESULTS: We here report on a fetus with intrauterine growth retardation and malformations observed on prenatal ultrasound leading to invasive prenatal testing...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29045977/-clinical-and-genetic-characteristics-of-williams-beuren-syndrome-2-cases-report
#4
S Q Wang, Z X Yang, H Li
To explore the clinical and genetic characteristics of Williams-Beuren syndrome (WBS) and to raise awareness of the disease. The characteristics of clinical manifestations, personal history, cardiac ultrasound, brain magnetic resonance imaging (MRI), electroencephalogram (EEG) and chromosome detection results of two cases with WBS were analyzed. The two patients were both male and the age was 11 months and 1 day, and 9 months and 9 days, respectively. They both suffered from cardiovascular malformation: case one presented supravalvular aortic stenosis, and case two showed atrial septal defect and patent ductus arteriosus...
October 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/29030170/in-utero-negativization-of-zika-virus-in-a-case-with-serious-central-nervous-system-abnormalities
#5
Carlota Rodó, Anna Suy, Elena Sulleiro, Antoni Soriano-Arandes, Andrés Antón, Itziar García, Silvia Arévalo, Élida Vázquez, Ana Vázquez, Fernando de Ory, M Paz Sánchez-Seco, Carlos Rodrigo, Tomás Pumarola, Elena Carreras
OBJECTIVES: To describe a case of a pregnant woman with Zika virus infection and severe fetal brain malformations. METHODS: Serial ultrasound measurements, fetal magnetic resonance imaging results, laboratory and amniocentesis results, and perinatal outcomes of the pregnant woman and her neonate are reported. RESULTS: Zika virus tested positive in amniotic fluid at 19 weeks while being negative at delivery. The newborn did not meet the case definition of congenital Zika virus syndrome because neither the Zika virus RNA nor immunoglobulin M antibodies were detected; however, prenatal brain lesions were confirmed after birth...
October 10, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28944865/middle-pregnancy-ultrasound-screening-for-fetal-chromosomal-diseases
#6
Li Liu, Ping Zhou, Zemin Cao, Xiaojun Tan
Prenatal examinations, including serological screening and ultrasound screening, are the methods determining a risk of fetal chromosomal disease. The current study is aimed to assess whether ultrasound screening can effectively assist the screening for fetal chromosomal disease among pregnant women with a single abnormal serum marker. Following serologic screening, pregnant women at 18‑32 weeks underwent systematic fetal ultrasound analysis. In this study, 99 pregnant women with an abnormal serum marker and fetal ultrasound abnormalities underwent prenatal diagnosis of amniotic fluid or umbilical cord blood, with confirmation by pathological examination performed following birth or induced labor...
November 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28935062/no-260-ultrasound-in-twin-pregnancies
#7
Lucie Morin, Kenneth Lim
OBJECTIVE: To review the literature with respect to the use of diagnostic ultrasound in the management of twin pregnancies. To make recommendations for the best use of ultrasound in twin pregnancies. OUTCOMES: Reduction in perinatal mortality and morbidity and short- and long-term neonatal morbidity in twin pregnancies. Optimization of ultrasound use in twin pregnancies. EVIDENCE: Published literature was retrieved through searches of PubMed and the Cochrane Library in 2008 and 2009 using appropriate controlled vocabulary (e...
October 2017: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/28872652/rutinunders%C3%A3-kning-med-ultraljud-kan-ge-besked-om-avvikelser-vid-diagnostiserad-missbildning-kr%C3%A3-vs-multidisciplin%C3%A3-rt-omh%C3%A3-ndertagande-av-b%C3%A3-de-foster-och-f%C3%A3-r%C3%A3-ldrar
#8
Jenny Hammarqvist Vejde, Annika Dellgren, Michaela Granfors
Routine pregnancy ultrasound scans can detect malformations. Multidisciplinary care of both the foetus and parent is required following diagnosed malformations In Sweden, all women are invited to at least one ultrasound examination during pregnancy. The »Routine ultrasound screening« is usually performed by a midwife around 18 weeks of gestation. There are several aims of the examination: to check viability, to detect multiple fetuses, to determine the location of the placenta, to check the amount of amniotic fluid, to estimate the date of delivery (if this had not been done earlier) and to detect structural fetal malformations...
August 29, 2017: Läkartidningen
https://www.readbyqxmd.com/read/28869276/amniocentesis-and-chorionic-villus-sampling-for-prenatal-diagnosis
#9
REVIEW
Zarko Alfirevic, Kate Navaratnam, Faris Mujezinovic
BACKGROUND: During pregnancy, fetal cells suitable for genetic testing can be obtained from amniotic fluid by amniocentesis (AC), placental tissue by chorionic villus sampling (CVS), or fetal blood. A major disadvantage of second trimester amniocentesis is that the results are available relatively late in pregnancy (after 16 weeks' gestation). Earlier alternatives are chorionic villus sampling (CVS) and early amniocentesis, which can be performed in the first trimester of pregnancy. OBJECTIVES: The objective of this review was to compare the safety and accuracy of all types of AC (i...
September 4, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28856020/can-ultrasound-be-helpful-in-selecting-optimal-management-methods-for-pregnancies-complicated-by-placental-non-trophpblastic-tumors
#10
REVIEW
Nabil Abdalla, Robert Piórkowski, Paweł Stanirowski, Monika Pazura, Krzysztof Cendrowski, Włodzimierz Sawicki
Placental chorioangioma is the most common subtype of non-trophoblastic placental tumors. Other subtypes are very rare and usually associated with an uneventful course of pregnancy. Most chorioangiomas are small and of no clinical significance. Giant chorioangiomas may be associated with serious fetal and maternal complications. So far, no established ultrasound guidelines are available for the management of placental non-trophoblastic tumors. This may be attributed to the rarity of the disease entity and its different clinical features and complications...
June 2017: Journal of Ultrasonography
https://www.readbyqxmd.com/read/28805615/prenatal-diagnosis-of-holoprosencephaly-associated-with-smith-lemli-opitz-syndrome-slos-in-a-46-xx-fetus
#11
André Travessa, Patrícia Dias, Pedro Rocha, Ana Berta Sousa
OBJECTIVE: To show the importance of measuring cholesterol precursor levels in amniotic fluid in all pregnancies with ultrasound features (such as holoprosencephaly) suggestive of Smith-Lemli-Opitz syndrome (SLOS), after exclusion of chromosomal anomalies. CASE REPORT: A 28-year-old woman, gravida 1 para 0, performed chorionic villus sampling for fetal karyotyping at 13 weeks of gestation due to positive combined first trimester screening in a fetus with increased nuchal translucency and suspected holoprosencephaly...
August 2017: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28791262/clinical-characteristics-of-pregnancies-complicated-by-congenital-myotonic-dystrophy
#12
Cheonga Yee, Suk-Joo Choi, Soo-Young Oh, Chang-Seok Ki, Cheong-Rae Roh, Jong-Hwa Kim
OBJECTIVE: Although the conventional prevalence of myotonic dystrophy is 1:8,000, the prevalence in Korean population was recently reported as 1:1,245. With higher domestic result than expected, we aimed to investigate the clinical characteristics of pregnancies complicated by congenital myotonic dystrophy in our institution. METHODS: We have reviewed 11 paired cases of neonates diagnosed with congenital myotonic dystrophy and their mothers between July 2004 and May 2014, with clinical features including maternal history of infertility, prenatal ultrasonographic findings, and neonatal outcomes...
July 2017: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/28790549/genetic-counseling-and-prenatal-diagnosis-of-triploidy-during-the-second-trimester-of-pregnancy
#13
Milenko Kolarski, Begzudin Ahmetovic, Maja Beres, Radomir Topic, Vedran Nikic, Ivana Kavecan, Semin Sabic
INTRODUCTION: Triploidy is a lethal chromosomal numeric abnormality, characterized on extra haploid set of chromosomes. It occurs in 2 to 3% of conceptuses and accounts for approximately 20% of chromosomally abnormal first-trimester miscarriages. As such, triploidy is estimated to occur in 1 of 3,500 pregnancies at 12 weeks', 1 in 30,000 at 16 weeks', and 1 in 250,000 at 20 weeks' gestation. CASE REPORT: We present a case of second-trimester triploidy diagnosed prenataly at our center...
April 2017: Medical Archives
https://www.readbyqxmd.com/read/28753736/can-quantity-of-amniotic-fluid-reliably-predict-postnatal-renal-function-in-boys-with-posterior-urethral-valves-a-decision-curve-analysis
#14
Luke Harper, Alice Waubant, Julien Vignes, Sara Amat, Eric Dobremez, Yan Lefevre, Cyril Ferdynus
OBJECTIVE: Prenatal management of male fetuses with suspected posterior urethral valves depends on reliable markers for postnatal long-term renal function. Whether ultrasound parameters, including the presence or absence of oligohydramnios, are reliable remains the subject of debate. We decided to evaluate the reliability of quantity of amniotic fluid to predict postnatal renal function using decision curve analysis (DCA), a method for evaluating the clinical utility of a diagnostic test...
September 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28743210/fetal-middle-cerebral-artery-doppler-in-late-term-pregnancy-a-predicting-factor-for-failed-induction-of-labor
#15
Silvia Vannuccini, Michela Torricelli, Caterina Bocchi, Filiberto M Severi, Mariarosaria Di Tommaso, Felice Petraglia
PURPOSE: To study the role of fetal middle cerebral artery (MCA) Doppler evaluated prior to induction of labor in late-term pregnancies, in order to build an ultrasound-based predictive model for failed induction. MATERIALS AND METHODS: A prospective cohort study on 250 nulliparous women carrying singleton late-term pregnancies was conducted. Prior to induction, each patient underwent to an ultrasound evaluation for fetal MCA Doppler. Additional ultrasound parameters such as cervical length (CL), membranes thickness, amniotic fluid index, placental location, and estimated fetal weight (EFW) were collected...
July 25, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28730376/lower-urinary-tract-obstruction-fetal-intervention-based-on-prenatal-staging
#16
Rodrigo Ruano, Timothy Dunn, Michael C Braun, Joseph R Angelo, Adnan Safdar
The authors present an overview of lower urinary tract obstruction (LUTO) in the fetus with a particular focus on the insult to the developing renal system. Diagnostic criteria along with the challenges in estimating long-term prognosis are reviewed. A proposed prenatal LUTO disease severity classification to guide management decisions with fetal intervention to maintain or salvage in utero and neonatal pulmonary and renal function is also discussed. Stage I LUTO (mild form) is characterized by normal amniotic fluid index after 18 weeks, normal kidney echogenicity, no renal cortical cysts, no evidence of renal dysplasia, and favorable urinary biochemistries when sampled between 18 and 30 weeks; prenatal surveillance is recommended...
July 21, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28710882/mid-trimester-preterm-premature-rupture-of-membranes-pprom-etiology-diagnosis-classification-international-recommendations-of-treatment-options-and-outcome
#17
REVIEW
Michael Tchirikov, Natalia Schlabritz-Loutsevitch, James Maher, Jörg Buchmann, Yuri Naberezhnev, Andreas S Winarno, Gregor Seliger
Mid-trimester preterm premature rupture of membranes (PPROM), defined as rupture of fetal membranes prior to 28 weeks of gestation, complicates approximately 0.4%-0.7% of all pregnancies. This condition is associated with a very high neonatal mortality rate as well as an increased risk of long- and short-term severe neonatal morbidity. The causes of the mid-trimester PPROM are multifactorial. Altered membrane morphology including marked swelling and disruption of the collagen network which is seen with PPROM can be triggered by bacterial products or/and pro-inflammatory cytokines...
July 15, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28708574/4d-ultrasound-study-of-fetal-movement-early-in-the-second-trimester-of-pregnancy
#18
Suraphan Sajapala, Mohamed Ahmed Mostafa AboEllail, Kenji Kanenishi, Nobuhiro Mori, Genzo Marumo, Toshiyuki Hata
AIM: To assess the frequency of fetal movement and reproducibility of fetal movement counting in normal singleton pregnancies early in the second trimester using four-dimensional (4D) ultrasound. METHODS: Twenty-nine singleton pregnancies were studied for 15 min employing 4D ultrasound at 14-16 (19 cases) and 17-19 (10 cases) weeks of gestation. The frequencies of eight fetal movements (head anteflexion, head retroflexion, body rotation, hand to face movement, general movement, isolated arm movement, isolated leg movement and mouthing movement) were evaluated...
August 28, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28656648/prenatal-incision-of-ureterocele-causing-bladder-outlet-obstruction-a-multicenter-case-series
#19
Gihad E Chalouhi, Anne-Maude Morency, Roland De Vlieger, José Maria Martinez, Thomas Blanc, Ryan Hodges, Alexandra Gueneuc, Greg Ryan, Jan Deprest, Eduard Gratacos, Yves Ville
We reviewed data from a cohort of fetuses with ureterocele diagnosed and operated prenatally in four fetal therapy centers. Inclusion criteria were (1) ureterocele confirmed on detailed fetal ultrasound examination, (2) absence of additional fetal malformations, and (3) fetal intervention to decompress the ureterocele with local institutional review boards' approval. Data on sonographic follow-up, obstetrical, neonatal outcome, and postnatal evaluation were collected. Ten cases of prenatally treated ureterocele are described...
October 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28635180/renal-vascularization-indexes-and-fetal-hemodynamics-in-fetuses-with-growth-restriction
#20
Giovana Farina Doro, Janaína Campos Senra, Agatha Sacramento Rodrigues, Seizo Miyadahira, Renata Lopes Ribeiro, Rossana Pulcinelli Vieira Francisco, 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 10th percentile for fetal weight. Partial correlation analysis (controlled for renal depth and gestational age) was performed...
June 20, 2017: Prenatal Diagnosis
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