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https://www.readbyqxmd.com/read/28510070/sonographic-detection-of-open-spina-bifida-in-the-first-trimester-review-of-the-literature
#1
César Meller, Horacio Aiello, Lucas Otaño
In the beginnings, sonographic diagnosis of open spina bifida (OSB) relied on the meticulous scanning of the fetal vertebrae for abnormalities but many defects were missed. After the mid-1980s, however, with the description of the intracranial findings in the second trimester (the "lemon sign" and the "banana sign"), the prenatal diagnosis of OSB was enhanced. In the last 2 decades, there has been widespread uptake of routine ultrasound examination in the first trimester of pregnancy with the purpose of the measurement of fetal crown-rump length to determine gestational age, to screen for trisomy 21 and other aneuploidies, mainly with the nuchal translucency, and for diagnosis of many major abnormalities...
May 16, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28508418/quantitative-analysis-of-the-cervical-texture-by-ultrasound-in-the-mid-pregnancy-is-associated-with-spontaneous-preterm-birth
#2
Núria Baños, Alvaro Perez-Moreno, Carla Julià, Clara Murillo-Bravo, David Coronado, Eduard Gratacos, Jan Deprest, Montse Palacio
OBJECTIVE: New tools are required to identify women at increased risk of spontaneous preterm birth (sPTB). Quantitative texture analysis by ultrasound has been used to extract robust features from the ultrasound image of a given tissue to detect subtle changes in its microstructure. This may also be applied to the cervix. We aimed to determine if there is an association between quantitative analysis of the cervical texture (CTx) by ultrasound in the mid-trimester of pregnancy and sPTB <37(+0) weeks...
May 15, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28505706/the-three-vessels-and-trachea-view-3vtv-in-the-first-trimester-of-pregnancy-an-additional-tool-in-screening-for-congenital-heart-defects-chd-in-an-unselected-population
#3
Valentina De Robertis, Georgios Rembouskos, Tiziana Fanelli, Grazia Volpe, Brunella Muto, Paolo Volpe
OBJECTIVE: The aim of the study was to evaluate the feasibility of obtaining the 3VTV in an unselected population undergoing first trimester screening for aneuploidy, and to investigate its role in the early detection of CHD. METHODS: Cardiac examination was performed by expert sonographers. Abnormal findings of 3VTV were classified in 3 different subgroups: number, size and spatial relationship of the vessels. RESULTS: We enrolled 6350 consecutive singleton pregnancies and included 5343 cases...
May 15, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28481445/optimising-fertility-outcomes-for-women-with-early-stage-cervical-cancer-when-less-is-more
#4
Efterpi Tingi, Emma J Crosbie, Gemma Owens
Radical hysterectomy and pelvic lymphadenectomy is standard management for early-stage cervical cancer. Radical trachelectomy achieves equivalent oncological outcomes to hysterectomy thus providing an alternative for women who wish to preserve their fertility (Xu et al. Acta Obstet Gynecol Scand 2011; 90: 1200-09). Trachelectomy offers the potential for pregnancy but poor obstetric sequelae, including second trimester miscarriage, preterm premature rupture of membranes (PPROM) and preterm delivery are common, likely due to reduced mechanical support from a shortened cervix and ascending infection...
May 8, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28477345/fetoscopic-laser-coagulation-in-1020-pregnancies-with-twin-to-twin-transfusion-syndrome-demonstrates-improvement-of-double-survival-rates
#5
W Diehl, A Diemert, D Grasso, S Sehner, K Wegscheider, K Hecher
OBJECTIVE: To investigate the growing experience and learning curve of fetoscopic laser coagulation of the placental vascular anastomoses in severe mid trimester twin-to-twin transfusion syndrome (TTTS) and its influence on perinatal outcome in a single center setting. METHODS: Between 01/1995 and 03/2013 we performed laser therapy in 1020 consecutive pregnancies with TTTS between 15.1 and 27.4 weeks of gestation. We compared perinatal outcome in blocks of five sequential groups...
May 6, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28443480/adverse-placental-perfusion-and-pregnancy-outcomes-in-a-new-nonhuman-primate-model-of-gestational-protein-restriction
#6
Victoria H J Roberts, Jamie O Lo, Katherine S Lewandowski, Peter Blundell, Kevin L Grove, Christopher D Kroenke, Elinor L Sullivan, Charles T Roberts, Antonio E Frias
Maternal malnutrition during pregnancy impacts fetal growth, with developmental consequences that extend to later life outcomes. In underdeveloped countries, this malnutrition typically takes the form of poor dietary protein content and quality, even if adequate calories are consumed. Here, we report the establishment of a nonhuman primate model of gestational protein restriction (PR) in order to understand how placental function and pregnancy outcomes are affected by protein deficiency. Rhesus macaques were assigned to either a control diet containing 26% protein or switched to a 13% PR diet prior to conception and maintained on this PR diet throughout pregnancy...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28442046/morphometric-developmental-pattern-of-bovine-handmade-cloned-concepti-in-late-pregnancy
#7
R P C Gerger, F C Zago, E S Ribeiro, S Gaudencio Neto, L T Martins, L H Aguiar, V H V Rodrigues, F H Furlan, I Ortigari, R D Sainz, C L Ferrell, M A Miglino, C E Ambrósio, J L Rodrigues, R Rossetto, F Forell, L R Bertolini, M Bertolini
Cloning procedures often interfere with conceptus growth and life ex utero, in a set of symptoms known as abnormal offspring syndrome (AOS). The aim of the present study was to compare the developmental pattern of in vivo-derived (IVD), IVF-derived and handmade cloning-derived (NT-HMC) Day 225 bovine concepti using established procedures. Pregnancy diagnosis was performed on Day 30 following blastocyst transfer on Day 7. Conceptus morphometry was assessed by ultrasonography on Day 51, and on Day 225 pregnant cows were killed for morphological examination of concepti...
April 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/28418597/mid-trimester-residual-cervical-length-and-the-risk-of-preterm-birth-in-pregnancies-after-abdominal-radical-trachelectomy-a-retrospective-analysis
#8
Yoshifumi Kasuga, Kei Miyakoshi, Hiroshi Nishio, Yohei Akiba, Toshimitsu Otani, Marie Fukutake, Satoru Ikenoue, Daigo Ochiai, Tadashi Matsumoto, Kyoko Tanaka, Kazuhiro Minegishi, Naoaki Kuji, Rachel Roberts, Daisuke Aoki, Mamoru Tanaka
OBJECTIVE: To investigate the association between the mid-trimester residual cervical length (CL) and the risk of preterm birth in pregnancies after abdominal radical trachelectomy (RT). DESIGN: Retrospective cohort study. SETTING: University Hospital. POPULATION: A total of 33 deliveries after 22 weeks' gestation in 30 women who underwent abdominal RT including prophylactic cervical cerclage and perinatal care between January 2002 and May 2016...
April 18, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28399138/short-cervical-lengths-initially-detected-in-mid-trimester-and-early-in-the-third-trimester-in-asymptomatic-twin-gestations-association-with-histologic-chorioamnionitis-and-preterm-birth
#9
Jeong Woo Park, Kyo Hoon Park, Eun Young Jung, Soo-Hyun Cho, Ji Ae Jang, Ha-Na Yoo
OBJECTIVE: To determine whether short cervical lengths (≤20 mm) that were initially detected in mid-trimester and early in the third trimester are independently associated with increased risks of subsequent histologic chorioamnionitis and spontaneous preterm birth (SPTB, defined as a delivery before 34 weeks) in asymptomatic women with twin pregnancies. MATERIAL AND METHODS: This is a prospective study including 292 consecutive asymptomatic women with twin gestations...
2017: PloS One
https://www.readbyqxmd.com/read/28385051/the-mid-gestation-triple-test-profile-among-women-diagnosed-with-vasa-previa
#10
Yaakov Melcer, Reuven Sharony, Marina Pekar-Zlotin, Josef Tovbin, Noam Smorgick, Howard Cuckle, Ron Maymon
Purpose To assess the mid-trimester triple test biomarkers among women diagnosed with vasa previa. Methods The study included 43 singleton pregnancies diagnosed with vasa previa between the years 1988 to 2011. The mid-gestation screening test for Down syndrome was calculated from the combination of triple serum markers and maternal age, and expressed as a multiple of the gestation specific normal mean (MoM). Reference MoM values were calculated from the local population. The levels of mid-gestation maternal serum alpha-fetoprotein (AFP), human chorionic gonadotropin (hCG) and unconjugated estriol (uE3) of patients with VP were compared with control reference group...
April 6, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28378426/a-prospective-study-on-fetal-posterior-cranial-fossa-assessment-for-early-detection-of-open-spina-bifida-at-11-13-weeks
#11
Semir Kose, Sabahattin Altunyurt, Pembe Keskinoglu
To test three measurements; brain stem (BS), intracranial translucency (IT) and brain stem to occipital bone distance (BSOB), as well as one landmark; cisterna magna (CM) visibility, for early diagnosis of open spina bifida (OSB) in a low risk population. A prospective observational study was undertaken in a university hospital. A sample of 1479 women consented to participate between 20 September 2013 and 30 June 2015. Measurements were performed from the mid-sagittal view, as is routinely used for nuchal thickness assessment...
April 5, 2017: Congenital Anomalies
https://www.readbyqxmd.com/read/28370687/mid-trimester-sonographic-cervical-consistency-index-to-predict-spontaneous-preterm-birth-in-a-low-risk-population
#12
Núria Baños, Clara Murillo-Bravo, Carla Julià, Federico Migliorelli, Alvaro Perez-Moreno, Jose Ríos, Eduard Gratacos, Lil Valentin, Montse Palacio
OBJECTIVES: To estimate the ability of mid-trimester sonographic Cervical Consistency Index (CCI) to predict spontaneous preterm birth (sPTB) in low-risk pregnancies and to compare its performance with mid-trimester sonographic cervical length (CL). METHODS: This is a prospective cohort study including women with singleton pregnancies examined with ultrasound at 19 + 0 to 24 + 6 gestational weeks. All underwent transvaginal ultrasound examination of the cervix, but CCI and CL were measured off-line only in women without risk factors for sPTB...
March 31, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28366035/the-relationship-between-maternal-body-composition-in-early-pregnancy-and-foetal-mid-thigh-soft-tissue-thickness-in-the-third-trimester-in-a-high-risk-obstetric-population
#13
Breffini Anglim, Nadine Farah, Clare O'Connor, Niamh Daly, Mairead M Kennelly, Michael J Turner
Maternal obesity is an emerging challenge in contemporary obstetrics. To date there has been no study analysing the relationship between specific maternal body composition measurements and foetal soft-tissue measurements. The aim of this study was to determine whether measurement of maternal body composition at booking predicts foetal soft-tissue trajectories in the third trimester. We analysed the relationship between foetal thigh in the third trimester and both maternal BMI and body composition using the Tanita digital scales in the first trimester...
April 1, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28361594/an-unusual-hydrops-fetalis-associated-with-compound-heterozygosity-for-kr%C3%A3-ppel-like-factor-1-mutations
#14
Helena H L Lee, Annisa S L Mak, K O Kou, C F Poon, W S Wong, K H Chiu, Patrick K C Au, Kelvin Y K Chan, Anita S Y Kan, Mary H Y Tang, K Y Leung
Hydrops fetalis is commonly due to Hb Bart's (γ4) disease in South East Asia. Here, we report an unusual case of hydrops fetalis due to congenital dyserythropoietic anemia (CDA) associated with compound heterozygosity for Krüppel-like factor 1 (KLF1) gene mutations. Fetal cardiomegaly was first detected on routine mid-trimester scan in a pregnant woman with normal mean corpuscular volume (MCV) and Rhesus positive status. The fetus subsequently developed hydrops fetalis, and cordocentesis showed severe fetal anemia with a hemoglobin (Hb) level of 3...
November 2016: Hemoglobin
https://www.readbyqxmd.com/read/28343558/simulator-based-obstetric-ultrasound-training-a-prospective-randomized-single-blinded-study
#15
Hadar Rosen, Rory Windrim, Yee Man Lee, Lara Gotha, Vsevolod Perelman, Stefania Ronzoni
OBJECTIVE: To compare the use of simulator-based and patient-based obstetric ultrasound training. METHODS: This was a prospective, randomized, single-blinded trial. Eighteen consenting obstetric trainees with minimal previous ultrasound exposure were recruited. Enrolled patients were also fully consenting. Mid-trimester fetal brain anatomy in the standard planes (i.e., biparietal diameter and head circumference, cavum septum pellucidum, posterior fossa, and lateral ventricle) was chosen as a surrogate for all fetal anatomy ultrasound training...
March 2017: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/28341180/morphological-and-morphometrical-maturation-of-ventral-cochlear-nucleus-in-human-foetus
#16
Sabita Mishra, T S Roy, Shashi Wadhwa
Auditory impulses perceived by the hair cells of the organ of corti are relayed in the cochlear nucleus, the first relay station in the brainstem, by the cochlear nerve. The human foetus is well known to respond to sound during the last trimester of gestation. On the contrary, studies conducted in rat, cat and mouse have shown that these mammals have an immature auditory system at the time of birth. There are very few reports available regarding the morphological and functional maturation of the cochlear nucleus in human...
March 21, 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/28333275/anti-m%C3%A3-llerian-hormone-inhibits-activation-and-growth-of-bovine-ovarian-follicles-in-vitro-and-is-localized-to-growing-follicles
#17
M Y Yang, R A Cushman, J E Fortune
STUDY QUESTION: Does anti-Müllerian hormone (AMH) inhibit activation (initiation of growth) of primordial follicles and attenuate the growth of primary follicles in cattle, an excellent animal model for human ovarian follicular development? SUMMARY ANSWER: AMH inhibited activation of bovine primordial follicles and attenuated the growth of activated follicles in vitro. WHAT IS KNOWN ALREADY: In mice null mutant for AMH, the pool of primordial follicles is depleted prematurely and AMH inhibits follicle activation in vitro...
May 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28323933/research-resource-transcriptional-dynamics-of-cultured-human-villous-cytotrophoblasts
#18
Joshua F Robinson, Mirhan Kapidzic, Matthew Gormley, Katherine Ona, Terrence Dent, Helia Seifikar, Emily G Hamilton, Susan J Fisher
During human pregnancy, cytotrophoblasts (CTBs) play key roles in uterine invasion, vascular remodeling, and anchoring of the feto-placental unit. Due to the challenges associated with studying human placentation in utero, cultured primary villous CTBs are used as a model of the differentiation pathway that leads to invasion of the uterine wall. In vitro, CTBs emulate in vivo cell behaviors, such as migration, aggregation and substrate penetration. While some of the molecular features related to these cell behaviors have been described, the underlying mechanisms, at a global level, remain undefined at mid-gestation...
March 8, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323386/the-association-of-maternal-lymphatic-markers-and-critical-congenital-heart-defects-in-the-fetus-a-population-based-case-control-study
#19
Martina A Steurer, Mary E Norton, Rebecca J Baer, Gary M Shaw, Sheila Keating, Anita J Moon-Grady, Christina D Chambers, Laura L Jelliffe-Pawlowski
The objective ot this study was to investigate whether lymphatic markers measured in women during the second trimester are associated with critical congenital heart defects (CCHDs) in offspring. This is a retrospective cohort study of pregnant women who participated in the California Prenatal Screening Program. CCHD data in the offspring was captured by linking birth certificate data with hospital patient discharge records. Second trimester samples were assayed for vascular endothelial growth factor (VEGF), platelet derived growth factor (PDGF) AA/BB, and PDGF AB...
May 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28320233/does-cervical-cerclage-decrease-preterm-birth-in-twin-pregnancies-with-a-short-cervix
#20
Tracy M Adams, Timothy J Rafael, Nadia B Kunzier, Supriya Mishra, Rose Calixte, Anthony M Vintzileos
PURPOSE: To determine if use of cerclage in twin gestations with mid-trimester short cervix is associated with decreased preterm birth rate. STUDY DESIGN: This is a retrospective cohort of twin gestations identified with cervical length of ≤2.5 cm before 24 weeks of gestation through the perinatal ultrasound database of two institutions from 2008 to 2014. Patients with and without cerclage were compared for a primary outcome of preterm birth at <35 weeks...
April 10, 2017: Journal of Maternal-fetal & Neonatal Medicine
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