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First trimester ultrasound

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https://www.readbyqxmd.com/read/28632498/can-early-ultrasonography-explain-the-lower-miscarriage-rates-in-twin-as-compared-to-singleton-pregnancies-following-assisted-reproduction
#1
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/28631308/association-between-inadequate-antenatal-care-utilisation-and-severe-perinatal-and-maternal-morbidity-an-analysis-in-the-precare-cohort
#2
M Linard, B Blondel, C Estellat, C Deneux-Tharaux, D Luton, J F Oury, T Schmitz, L Mandelbrot, E Azria
OBJECTIVE: Because the effectiveness of antenatal care in reducing pregnancy complications is still discussed despite widespread recommendations of its use, we sought to assess the association between utilisation of recommended antenatal care and severe maternal (SMM) and perinatal morbidity (SPM). DESIGN: Prospective cohort study. SETTING: Four maternity units around Paris in 2010-2012. SAMPLE: 9117 women with singleton pregnancies...
June 20, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28617944/inequity-in-timing-of-prenatal-screening-in-new-zealand-who-are-our-most-vulnerable
#3
Olivia Payne, Avinesh Pillai, Michelle Wise, Peter Stone
BACKGROUND: In New Zealand (NZ), Maori and Pacific women are less likely to complete prenatal screening for Down's syndrome and other aneuploidies than other ethnic groups. Young women <20 have low rates of completed screening compared with women >20 years. Women living in deprived areas have lower completed screen rates than women living in more affluent areas. Combined first trimester screening has a superior sensitivity (85%) compared with second trimester screening (75%) for trisomy 21...
June 15, 2017: Australian & New Zealand Journal of Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/28616924/-reference-intervals-of-thyroid-hormones-in-normal-pregnant-women-and-effects-of-thyroid-autoantibodies-on-thyroid-hormone-levels-in-pregnant-women-in-chengdu-area
#4
Yu-Min Chen, Jing Zeng, Yue-Rong Yan, Dan Luo, Lu Huang, Hui Huang
OBJECTIVES: To establish the reference intervals of thyroid hormones in normal pregnant women in Chengdu area of China, and to investigate the effects of thyroid autoantibodies on thyroid function in pregnant women. METHODS: We included 696 pregnant women who had gestation data from June 2013 to March 2014 in Chengdu Women & Children's Central Hospital. Every subject under went questionnaire survey, physical examination, thyroid ultrasound and measurement of thyroid hormone and thyroid autoantibodies...
May 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28613385/expanded-conventional-first-trimester-screening
#5
Jonathan B Carmichael, Hsiao-Pin Liu, David Janik, Terrence W Hallahan, Kypros H Nicolaides, David A Krantz
OBJECTIVE: To determine the performance of a five (5) serum marker plus ultrasound screening protocol for T21, T18 and T13. METHOD: Specimens from 331 unaffected, 34 T21, 19 T18 and 8 T13 cases were analyzed for free Beta hCG, PAPP-A, AFP, PlGF and dimeric inhibin A (DIA). Gaussian distributions of MoM values were used to estimate modeled false positive and detection rates. RESULTS: For T21, at a 1/300 risk cut-off, detection rate of screening with all five serum markers along with nuchal translucency and nasal bone was 98% at a 1...
June 14, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28612632/comparison-of-first-trimester-transvaginal-anatomy-scan-to-the-second-trimester-structural-survey-in-normal-weight-and-obese-populations-a-pilot-study
#6
Anna McCormick, Heather Anaya, Ramkrishna Mehendale, Louis Fogg, Michael Roche, Jacques Abramowicz
PURPOSE: To compare visualization of first trimester fetal anatomic transvaginal ultrasound (TVUS) to the second trimester transabdominal anatomic ultrasound (TAU) in normal weight and obese patients. MATERIALS AND METHODS: In a prospective cross-sectional study design, 25 women underwent a TVUS between 12-14 weeks and a TAU at 18-22 weeks. For each anatomic structure, the percentage of patients achieving optimal visualization was recorded. Risk ratios for visualizing a structure in the second trimester versus the first were calculated...
June 14, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28602043/efficacy-of-first-trimester-ultrasound-parameters-for-prediction-of-early-spontaneous-abortion
#7
Mamta Rath Datta, Ankush Raut
OBJECTIVE: To assess first-trimester ultrasound measurements for the prediction of early spontaneous abortion. METHODS: In a prospective observational study in Jamshedpur, India, women with a singleton pregnancy of 42-76 days were enrolled between November 2014 and April 2016. Inclusion criteria were spontaneous conception, embryonic cardiac activity, and regular menstrual cycle. Fetal crown-to-rump length (CRL), gestational sac diameter (GSD), yolk sac diameter (YSD), and fetal heart rate (FHR) were measured by transvaginal ultrasonography...
June 11, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28601881/third-trimester-conditional-reference-values-for-longitudinal-fetal-growth-assessment
#8
Tri Rahmat Basuki, Stefania Triunfo, Javier Caradeux, Elisenda Eixarch, Stefan Hansson, Eduard Gratacos, Francesc Figueras
OBJECTIVES: The aim of this study was to derive longitudinal reference values of fetal growth (estimated fetal weight [EFW] and abdominal circumference [AC]) during the third trimester and to develop coefficients for conditional growth assessment. PATIENTS AND METHODS: A prospective cohort study was conducted involving consecutive singleton pregnancies in a low-risk population for a routine third-trimester scan at 30+0-34+6 weeks and follow-up at 37+0-38+6 weeks for an additional ultrasound...
June 10, 2017: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/28601471/surgical-management-algorithm-for-caesarean-scar-pregnancy
#9
Jessica Papillon-Smith, Mara L Sobel, Kirsten M Niles, M Jonathon Solnik, Ally Murji
OBJECTIVES: To report our experience with the management of Caesarean scar pregnancy (CSP) in the first trimester and to develop a unique treatment algorithm allowing physicians to customize their management based on clinical patient characteristics. METHODS: A retrospective review of 12 patients diagnosed with CSP between December 2012 and June 2016 was conducted in a tertiary care hospital in Toronto. All patients were diagnosed with CSP by transvaginal ultrasound using radiologic criteria...
June 7, 2017: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/28600059/molecular-genetic-characterization-of-a-prenatally-detected-de-novo-interstitial-deletion-of-chromosome-2q-2q31-1-q32-1-encompassing-hoxd13-znf385b-and-znf804a-associated-with-syndactyly-and-increased-first-trimester-nuchal-translucency
#10
Chih-Ping Chen, Chen-Ju Lin, Yen-Ni Chen, Schu-Rern Chern, Shin-Wen Chen, Shih-Ting Lai, Peih-Shan Wu, Li-Feng Chen, Wayseen Wang
OBJECTIVE: We present prenatal diagnosis and molecular genetic characterization of a de novo interstitial deletion of 2q (2q31.1-q32.1) and discuss the genotype-phenotype correlation. CASE REPORT: A 34-year-old, primigravid woman was referred to the hospital at 20 weeks of gestation for genetic counseling because of a prenatally detected de novo interstitial deletion of chromosome 2q (2q31.1-q32.1). She underwent amniocentesis at 17 weeks of gestation because of advanced maternal age and an increased first-trimester nuchal translucency (NT) thickness of 3...
June 2017: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28600057/molecular-genetic-characterization-of-a-prenatally-detected-de-novo-interstitial-deletion-of-chromosome-20p-20p12-p13-encompassing-jag1-and-a-literature-review-of-prenatal-diagnosis-of-alagille-syndrome
#11
Chih-Ping Chen, Chang-Sheng Yin, Liang-Kai Wang, Schu-Rern Chern, Shin-Wen Chen, Shih-Ting Lai, Peih-Shan Wu, Wen-Lin Chen, Wayseen Wang
OBJECTIVE: We present prenatal diagnosis and molecular genetic characterization of a de novo interstitial deletion of chromosome 20p (20p12-p13) and a literature review of prenatal diagnosis of Alagille syndrome (ALGS). CASE REPORT: A 33-year-old woman underwent amniocentesis at 17 weeks of gestation because of an abnormal result of combined first-trimester screening. Her husband was 35 years old, and there was no family history of congenital malformations. Amniocentesis revealed a karyotype of 46,XY,del(20)(p12p13), and array comparative genomic hybridization analysis on uncultured amniocytes revealed a 3...
June 2017: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28593553/prenatal-diagnosis-of-spina-bifida-from-intracranial-translucency-to-intrauterine-surgery
#12
Waldo Sepulveda, Amy E Wong, Francisco Sepulveda, Juan L Alcalde, Juan C Devoto, Felipe Otayza
Accurate and timely prenatal diagnosis of spina bifida (SB) is a major goal of modern antenatal care. Prenatal screening for open SB should be first performed at the time of routine first-trimester ultrasound by examining the posterior fossa for obliteration or non-visualization of the fourth ventricle ("intracranial translucency") and cisterna magna. The second step of screening is the second-trimester anatomy scan, at which time the features of the Chiari type II malformation should be looked for, including ventriculomegaly, scalloping of the frontal bones ("lemon" sign), and backward and caudal displacement of the cerebellar vermis with obliteration of the cisterna magna ("banana" sign)...
June 7, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28574580/echographic-features-and-perinatal-outcomes-in-fetuses-with-congenital-absence-of-ductus-venosus
#13
Raquel Garcia-Delgado, Raquel Garcia-Rodriguez, Azahar Romero Requejo, Marta Armas Roca, Luciana Obreros Zegarra, Margarita Medina Castellano, Jose A Garcia Hernandez
The purpose of this study was to describe the echographic features and perinatal outcomes of fetuses with absence of ductus venosus (ADV) MATERIAL AND METHODS: Retrospective review of 10 cases with ADV diagnosed by prenatal ultrasonography between January 2014 and February 2016 at a single referral center. Prenatal findings, umbilical shunting type, perinatal outcomes, and autopsy reports were reviewed RESULTS: A total of 11 491 fetuses underwent a first and second trimester screening during the study period...
June 2, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28568972/fetal-cerebral-magnetic-resonance-neurosonography-the-multiverse-and-the-brave-new-world-of-fetal-medicine
#14
Gustavo Malinger, Dario Paladini, Gianluigi Pilu, Ilan E Timor
Stuart Campbell was the first to use the metaphor of the parallel universes discussing the utilization of ultrasound in pregnancy.(1) The controversy around the use of magnetic resonance imaging (MRI) versus sonography to diagnose cerebral malformations is just another example in this regard. In one spatio-temporal continuum fetal neurosonography allows an accurate diagnosis of central nervous system anatomy(2-5) and malformations (6-9) including complex lesions such as commissural anomalies (10, 11) , posterior fossa malformations (12, 13) , disruptions (14-16) , and cortical anomalies(17) ; it performs similarly to magnetic resonance in the second and third trimester(18, 19) ; eventually, it allows a precise diagnosis of many malformations since the first trimester...
May 31, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28556269/cervical-varices-an-unusual-source-of-first-trimester-hemorrhage
#15
Joseph R Wax, Angelina Cartin, Christian Litton, Kelley Conroy, Michael G Pinette
Endocervical varices are a rare cause of obstetrical hemorrhage. Usually presenting in the second and third trimesters, bleeding varices often require pregnancy termination or indicated preterm birth via cesarean delivery. Our patient experienced variceal hemorrhage at 12 weeks' gestation in a dichorionic twin pregnancy conceived through in vitro fertilization. A low-lying placenta resolved at 19 weeks followed by variceal regression at 22 weeks' gestation. Endocervical varices causing first-trimester hemorrhage may regress with resolution of a coexisting low placental implantation, permitting planned vaginal delivery, despite progressive hemodynamic changes of pregnancy...
May 29, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28553771/the-first-trimester-combined-test-for-aneuploidies-a-single-center-experience
#16
Alina Veduta, Ana Maria Vayna, Simona Duta, Anca Panaitescu, Florin Popescu, Maria Bari, Gheorghe Peltecu, Florina Nedelea
PURPOSE: We present the results of the systematic application of the first trimester combined test for aneuploidies, in a Romanian center. METHODS: Since October 2009, in Filantropia Hospital in Bucharest, we have systematically been using the FMF (Fetal Medicine Foundation) combined first trimester test to screen for common aneuploidies at 11 to 13 + 6 weeks of gestation. We assessed the crown - rump length (CRL), nuchal translucency, fetal heart rate as well as PAPP-A and free β-hCG in maternal serum...
May 28, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28552751/-ultrasound-of-the-fetal-urinary-system-during-the-first-trimester-of-pregnancy
#17
N Hamdaoui, A Dabadie, E Lesieur, E Quarello, M Kheiri, G Hery, B Guidicelli, F Bretelle, G Gorincour
The detection of abnormalities of the fetal urinary system in the first trimester of pregnancy is constantly improving, namely owing to the improved resolution of the image, the use of the endovaginal approach and thanks to sonographers' constant training. The pathological aspects, usually detected in the second trimester of pregnancy, can be suspected early in the first trimester and range from kidneys' cavity dilation to bilateral renal agenesis, polycystic kidney disease, multi-cystic dysplasia and bladder megavessia or bladder exstrophy...
May 25, 2017: Gynecologie, Obstetrique, Fertilite & Senologie
https://www.readbyqxmd.com/read/28549467/the-prediction-diagnosis-and-management-of-complications-in-monochorionic-twin-pregnancies-the-ommit-optimal-management-of-monochorionic-twins-study
#18
Fiona L Mackie, R Katie Morris, Mark D Kilby
BACKGROUND: Monochorionic twin pregnancies are at increased risk of complications due to sharing a single placenta and potentially developing unbalanced vascular anastomoses. Complications include twin-twin transfusion syndrome (TTTS) which affects 10-15% monochorionic twins, and if untreated has a 70-90% perinatal loss rate. We are currently unable to predict which twins will develop complications or to what severity. We have previously shown differences in angiogenic and placental growth factors in maternal blood in pregnancies complicated by TTTS compared to twin pregnancies not complicated by TTTS but matched for gestation...
May 26, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/28542585/highly-efficient-maternal-fetal-zika-virus-transmission-in-pregnant-rhesus-macaques
#19
Sydney M Nguyen, Kathleen M Antony, Dawn M Dudley, Sarah Kohn, Heather A Simmons, Bryce Wolfe, M Shahriar Salamat, Leandro B C Teixeira, Gregory J Wiepz, Troy H Thoong, Matthew T Aliota, Andrea M Weiler, Gabrielle L Barry, Kim L Weisgrau, Logan J Vosler, Mariel S Mohns, Meghan E Breitbach, Laurel M Stewart, Mustafa N Rasheed, Christina M Newman, Michael E Graham, Oliver E Wieben, Patrick A Turski, Kevin M Johnson, Jennifer Post, Jennifer M Hayes, Nancy Schultz-Darken, Michele L Schotzko, Josh A Eudailey, Sallie R Permar, Eva G Rakasz, Emma L Mohr, Saverio Capuano, Alice F Tarantal, Jorge E Osorio, Shelby L O'Connor, Thomas C Friedrich, David H O'Connor, Thaddeus G Golos
Infection with Zika virus (ZIKV) is associated with human congenital fetal anomalies. To model fetal outcomes in nonhuman primates, we administered Asian-lineage ZIKV subcutaneously to four pregnant rhesus macaques. While non-pregnant animals in a previous study contemporary with the current report clear viremia within 10-12 days, maternal viremia was prolonged in 3 of 4 pregnancies. Fetal head growth velocity in the last month of gestation determined by ultrasound assessment of head circumference was decreased in comparison with biparietal diameter and femur length within each fetus, both within normal range...
May 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28537347/adnexal-torsion-in-the-first-trimester-of-pregnancy-diagnosis-laparoscopic-management-and-review-of-the-literature
#20
Rafael Bras, Jorge Braga, António Tomé, Helder Ferreira
We report a case of an adnexal torsion in a 27-year-old woman in her 12th week of gestation. She presented with hypogastric and lumbar pain with biliary vomiting and nausea. Upon physical examination, tenderness in the right lower quadrant with rebound tenderness was apparent, and gynecological examination revealed right adnexal tenderness with absence of abnormal cervical discharge. The transvaginal ultrasonography demonstrated an enlarged cystic right ovary with no flow detected on color and power Doppler mode...
May 24, 2017: Surgical Technology International
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