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https://www.readbyqxmd.com/read/28324997/assessing-the-development-of-fetal-myocardial-function-by-a-novel-doppler-myocardial-performance-index
#1
Ahsan H Khandoker, F Marzbanrad, Y Kimura, Saeed Al Nuaimi, M Palaniswami
Doppler-derived myocardial performance index are used to assess aspects of systolic and diastolic function in adult as well as fetal heart. The Tei Index (TI) is a useful and non-invasive tool. The aim of this study was to determine normal values of fetal left ventricular (LV) TI in early (16-32 weeks) and late trimester (35-41 weeks) fetuses and to develop a new myocardial performance index (K-index; KI) which focuses on fetal diastolic interval when oxygenated blood from the placenta filled in the LV. Simultaneous recordings of Doppler Ultrasound Signal (DUS) of the LV outflow tracts and fetal electrocardiogram signals were obtained in 55 early- and late-trimester fetuses...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324192/the-presence-of-human-papillomavirus-hpv-in-placenta-and-or-cord-blood-might-result-in-th2-polarization
#2
H-M Koskimaa, A Paaso, M J P Welters, S Grénman, K Syrjänen, S H van der Burg, S Syrjänen
The purpose of this study was to evaluate if an early exposure to human papillomavirus (HPV) during the prenatal period or infancy could result in HPV16-specific T helper (Th) responses resembling those of adults with HPV-induced lesions. We tested HPV16-specific cell-mediated immunity (CMI) in children born with HPV-positive umbilical cord blood and/or placenta or having persistent oral HPV infection and in constantly oral HPV-negative controls. Peripheral blood mononuclear cells from 33 children from the Finnish HPV Family Study cohort (mean age 14...
March 21, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28306541/clinical-characteristics-and-outcome-of-twin-pregnancies-complicated-by-single-intrauterine-death
#3
Qiong Luo, Xiujun Han
AIM: To investigate the clinical characteristics and outcome of twin pregnancies complicated by single intrauterine death and how to improve the outcomes of surviving twins. Three thousand three hundred and eighty-four women who delivered twin pregnancies at Women's Hospital, Zhejiang University, School of Medicine were included. Clinical and demographic data on gestational age, etiology, morbidity and mortality for mothers and fetuses were collected. RESULTS: The median gestational age for detecting a single intrauterine death in twin pregnancy was 29 weeks and the average gestational age of pregnancy termination was 32 weeks...
March 15, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28303777/placental-up-regulation-of-leptin-and-arms2-is-associated-with-growth-discordance-in-monochorionic-diamniotic-twin-pregnancies
#4
Luming Sun, Jia Zhou, Kai Wang, Jian Wang, Ling Shang, Jianguang Zhang, Junqing Wu, David S Cram
Fetal growth discordance is a relatively common complication of monochorionic diamniotic (MCDA) twin pregnancies and is caused by a combination of maternal and placental factors. The aim of the study was to survey placental gene expression patterns and identify genes associated with growth discordance. Clinical samples comprised eight growth-discordant MCDA twin placentas (31+3-34+4 weeks gestational age) and six growth-concordant twin placentas (31+2-37 weeks gestational age). Gene expression libraries were constructed from placental biopsy samples and analyzed by RNA-sequencing...
April 2017: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://www.readbyqxmd.com/read/28288770/experimental-toxoplasma-gondii-infections-in-pigs-humoral-immune-response-estimation-of-specific-igg-avidity-and-the-challenges-of-reproducing-vertical-transmission-in-sows
#5
Walter Basso, Felix Grimm, Maja Ruetten, Vitomir Djokic, Radu Blaga, Xaver Sidler, Peter Deplazes
Ten pregnant sows were experimentally inoculated per os with T. gondii in order to investigate vertical and galactogenic transmission of the parasite and the evolution and maturation of the specific IgG humoral response in the sows and piglets. Five seronegative sows received 10(4)T. gondii (CZ isolate clone H3) sporulated oocysts during late-pregnancy (Exp. 1), three sows received 10(4) oocysts during mid-pregnancy (Exp. 2) and three sows from Exp. 1 (and two seronegative sows) were re-inoculated with 10(5) oocysts during a further pregnancy (late-pregnancy) (Exp...
March 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28286810/epidemiology-and-related-risk-factors-of-preterm-labor-as-an-obstetrics-emergency
#6
Ali Asghar Halimi Asl, Saeed Safari, Mohsen Parvareshi Hamrah
INTRODUCTION: Preterm birth is still a major health problem throughout the world, which results in 75% of neonatal mortality. Preterm labor not only inflicts financial and emotional distress, it may also lead to permanent disability. The present study was conducted to determine the related risk factors and preventive measures of preterm labor. METHODS: This retrospective cross-sectional study assessed all preterm labors, as well as an equal number of term labors, during seven years, at an educational hospital...
2017: Emergency (Tehran, Iran)
https://www.readbyqxmd.com/read/28278303/clinical-significance-of-histologic-chorioamnionitis-with-a-negative-amniotic-fluid-culture-in-patients-with-preterm-labor-and-premature-membrane-rupture
#7
Jeong Woo Park, Kyo Hoon Park, Eun Young Jung
OBJECTIVE: To evaluate the effect of histological chorioamnionitis (HCA) with a negative amniotic fluid (AF) culture on adverse pregnancy and neonatal outcomes and inflammatory status in the AF compartment in women with preterm labor or preterm premature rupture of membranes (PPROM). METHODS: This is a retrospective cohort study of 153 women diagnosed as having a preterm labor or PPROM (20-34 weeks) who delivered singleton gestations within 48 hours of amniocentesis...
2017: PloS One
https://www.readbyqxmd.com/read/28274166/serum-endothelin-1-and-placental-alkaline-phosphatase-levels-in-placenta-percreta-and-normal-pregnancies
#8
Hacer Uyanikoglu, Ahmet Berkiz Turp, Nese Gul Hilali, Adnan Incebiyik
PURPOSE: To evaluate the circulatory levels of endothelin 1 (ET-1) and the placental alkaline phosphatase (ALP) in pregnant women with placenta percreta (PP) and a control group. METHODS: This study was carried out in the Obstetrics and Gynecology and in the Biochemistry Departments of Harran University Medical School. Forty-four women who underwent cesarean section (CS) due to PP and 44 women who underwent CS for other obstetric reasons were included in this study...
March 8, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28264638/to-ignore-or-not-to-ignore-placental-calcifications-on-prenatal-ultrasound-a-systematic-review-and-meta-analysis
#9
Fadi G Mirza, Labib M Ghulmiyyah, Hani Tamim, Maha Makki, Dima Jeha, Anwar Nassar
OBJECTIVE: The human placenta is known to calcify with advancing gestational age, and, in fact, the presence of significant calcifications is one of the components of grade III placenta, typical of late gestation. As such, the presence of significant placental calcifications often prompts obstetric providers to expedite delivery. This practice has been attributed, in part, to the presumed association between grade III placenta and adverse pregnancy outcomes. Such approach, however, can be the source of major anxiety and may lead to unnecessary induction of labor, with its associated predisposition to cesarean delivery as well as a myriad of maternal and neonatal morbidities...
March 6, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28264611/prevalence-and-diagnostic-accuracy-of-doppler-ultrasound-of-placenta-accreta-in-egypt
#10
Ahmed M Maged, Emad Salah, Hany Saad, Hadeer Meshaal, Ashraf Eldaly, Maha A Katta, Wesam S Deeb
OBJECTIVE: To assess the prevalence of placenta accreta among those with placenta implanted over CS scar and to evaluate the accuracy of Doppler ultrasound in diagnosis. METHODS: A cross sectional study included 100 patients with placenta previa anterior with at least one previous CS. Ultrasound and color Doppler was done to all participants and correlated with operative findings. RESULTS: There was a significant difference between accrete and non accrete group regarding maternal age (32...
March 6, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28262232/anticoagulants-to-prevent-recurrent-placenta-mediated-pregnancy-complications-is-it-time-to-put-the-needles-away
#11
Leslie Skeith, Marc Rodger
Placenta-mediated pregnancy complications, such as pre-eclampsia, placental abruption, birth of a small-for-gestational age infant and late pregnancy loss, are common and carry significant morbidity and mortality. The etiology of placenta-mediated pregnancy complications is likely multifactorial and may include abnormal coagulation activation of the maternal-fetal interface. The use of antepartum low-molecular-weight heparin (LMWH) prophylaxis to prevent recurrent placenta-mediated pregnancy complications has become common practice despite limited and conflicting evidence to support its use...
March 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28259093/exposure-to-phytoestrogens-in-utero-and-age-at-menarche-in-a-contemporary-british-cohort
#12
Kristin J Marks, Terryl J Hartman, Ethel V Taylor, Michael E Rybak, Kate Northstone, Michele Marcus
Phytoestrogens are estrogenic compounds that occur naturally in plants. Phytoestrogens can cross the placenta, and animal studies have found associations between in utero exposure to phytoestrogens and markers of early puberty. We investigated the association between in utero exposure to phytoestrogens and early menarche (defined as <11.5 years of age at onset) using data from a nested case-control study within the Avon Longitudinal Study of Parents and Children, a longitudinal study involving families living in the South West of England...
March 1, 2017: Environmental Research
https://www.readbyqxmd.com/read/28258943/anaesthesia-for-abnormally-invasive-placenta-a-single-institution-case-series
#13
N J Taylor, R Russell
BACKGROUND: Abnormally invasive placenta describes a spectrum of disorders resulting in pathological placental implantation. It is associated with the potential for severe maternal haemorrhage and poor fetal outcome. Increasing numbers of women are at risk owing to the rising incidence of uterine surgery and increasing maternal age. We report data over a five-year period describing anaesthetic management of cases of abnormally invasive placenta in a UK tertiary-referral maternity unit and assess how management has developed...
January 23, 2017: International Journal of Obstetric Anesthesia
https://www.readbyqxmd.com/read/28258617/placental-characteristics-of-fetuses-with-congenital-heart-disease
#14
Afaf Albalawi, Flavia Brancusi, Frederic Askin, Robert Ehsanipoor, Jiangxia Wang, Irina Burd, Priya Sekar
OBJECTIVES: To investigate whether there is an association between congenital heart disease (CHD) and placental abnormalities. METHODS: We conducted a case-control study that included cases of infants with CHD who underwent cardiac surgery within 6 months of life at the Johns Hopkins Medical Center from 2000 to 2013, and gestational age-matched normal pregnancy controls (200 neonates per group). RESULTS: Overall, abnormal placental cord insertion (ie, eccentric, marginal, or velamentous) was associated with CHD (odds ratio, 2...
March 4, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28253469/thirty-years-of-the-world-health-organization-s-target-caesarean-section-rate-time-to-move-on
#15
Stephen J Robson, Caroline M de Costa
It has been 30 years since the World Health Organization first recommended a "maximum" caesarean section (CS) rate of 15%. There are demographic differences across the 194 WHO member countries; recent analyses suggest the optimal global CS rate is almost 20%. Attempts to reduce CS rates in developed countries have not worked. The strongest predictor of caesarean delivery for the first birth of "low risk" women appears to be maternal age; a factor that continues to increase. Most women whose first baby is born by caesarean delivery will have all subsequent children by caesarean delivery...
March 6, 2017: Medical Journal of Australia
https://www.readbyqxmd.com/read/28243917/conditions-for-collection-of-placental-tissue-samples-for-culturing-of-multipotent-mesenchymal-stromal-cells
#16
N V Nizyaeva, M N Nagovitsyna, G V Kulikova, U N Tumanova, R A Poltavtseva, I A Fedorova, M N Yushina, S V Pavlovich, A I Shchyogolev
Placentas from women aged 25-32 years with normal course of gestation were studied. It is essential to stick to certain methodological approaches for preparing viable multipotent mesenchymal stromal cell culture and to carry out morphological (macro and micro) evaluation of the chorionic villi, umbilical cords, and placentas. At stage I of the study, patients' histories, labor course, and examinations of the newborns should be analyzed to exclude women with genital and extragenital diseases. At stage II, it is essential to stick to special regulations and methods for collection of specimens of the cord, amnion, and placental tissue proper...
February 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28242967/morbidly-adherent-placenta-its-management-and-maternal-and-perinatal-outcome
#17
H K Chaudhari, P K Shah, Natasha D'Souza
OBJECTIVES: The aim of the study was to identify the risk factors predisposing to morbidly adherent placenta and to study the different modes of management and the obstetric and neonatal outcome of these patients. METHODS: This was a retrospective cum prospective observational study conducted in the Department of Obstetrics and Gynaecology in a tertiary care referral hospital in Mumbai from January 2012 to November 2014. RESULTS: The incidence of morbidly adherent placenta was 1...
February 2017: Journal of Obstetrics and Gynaecology of India
https://www.readbyqxmd.com/read/28240397/oxidative-stress-placental-ageing-related-pathologies-and-adverse-pregnancy-outcomes
#18
REVIEW
Zakia Sultana, Kaushik Maiti, John Aitken, Jonathan Morris, Lee Dedman, Roger Smith
Oxidative stress (OS), an imbalance between free radical generation and antioxidant defence, is recognized as a key factor in the pathogenesis of adverse pregnancy outcomes. Although OS is a common future of normal pregnancy, persistent, overwhelming OS leads to consumption and decline of antioxidants, affecting placental antioxidant capacity and reducing systems. The accumulation of OS causes damage to lipids, proteins and DNA in the placental tissue that induces a form of accelerated ageing. Premature ageing of the placenta is associated with placental insufficiency that prevents the organ meeting the needs of the foetus, and as a consequence, the viability of the foetus is compromised...
February 27, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28237345/expression-of-vascular-endothelial-growth-factor-vegf-and-factor-viii-in-the-gilt-placenta-and-its-relation-to-fetal-development
#19
Gregório C Guimarães, Lorena A Alves, Rafael P Betarelli, Camila S O Guimarães, Fernanda R Helmo, Carlos D Pereira Júnior, Rosana R M Corrêa, Márcio G Zangeronimo
Vascular endothelial growth factor (VEGF) and von Willebrand factor (Factor VIII) are important components involved in the regulation of vascular development and identification of endothelial cells in many tissues. This study aimed to evaluate the presence of these substances in the placenta of pig fetuses located in different uterine regions and at different gestational ages and correlate them with fetal development. One hundred seventy-five pig fetuses from fifteen gilts slaughtered at 50, 80 and 106 days of pregnancy were used...
April 1, 2017: Theriogenology
https://www.readbyqxmd.com/read/28227331/assessing-the-development-of-fetal-myocardial-function-by-a-novel-doppler-myocardial-performance-index
#20
Ahsan H Khandoker, F Marzbanrad, Y Kimura, Saeed Al Nuaimi, M Palaniswami, Ahsan H Khandoker, F Marzbanrad, Y Kimura, Saeed Al Nuaimi, M Palaniswami, Ahsan H Khandoker, Y Kimura, Saeed Al Nuaimi, F Marzbanrad, M Palaniswami
Doppler-derived myocardial performance index are used to assess aspects of systolic and diastolic function in adult as well as fetal heart. The Tei Index (TI) is a useful and non-invasive tool. The aim of this study was to determine normal values of fetal left ventricular (LV) TI in early (16-32 weeks) and late trimester (35-41 weeks) fetuses and to develop a new myocardial performance index (K-index; KI) which focuses on fetal diastolic interval when oxygenated blood from the placenta filled in the LV. Simultaneous recordings of Doppler Ultrasound Signal (DUS) of the LV outflow tracts and fetal electrocardiogram signals were obtained in 55 early- and late-trimester fetuses...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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