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Labor preterm

Chen-Yu Wang, Yu-Ju Lai, Kwei-Shuai Hwang, Chi-Huang Chen, Mu-Hsien Yu, Huei-Tsung Chen, Her-Young Su
OBJECTIVE: Neutropenia developed after continuous intravenous infusion of ritodrine hydrochloride (Yutopar) for preterm uterine contractions in a twin pregnancy. We successfully returned the low neutrophil count to the normal range after discontinuation of infusion of ritodrine and treatment with granulocyte colony stimulating factor (G-CSF). CASE REPORT: A 34-year-old woman with twin pregnancy was treated with ritodrine for preterm uterine contractions at 27 weeks and 6 days gestation...
October 2016: Taiwanese Journal of Obstetrics & Gynecology
Miha Lucovnik, Linda R Chambliss, Richard Blumrick, James Balducci, Ksenija Gersak, Robert E Garfield
OBJECTIVE: It has been shown that noninvasive uterine electromyography (EMG) can identify true preterm labor more accurately than methods available to clinicians today. The objective of this study was to evaluate the effect of body mass index (BMI) on the accuracy of uterine EMG in predicting preterm delivery. MATERIALS AND METHODS: Predictive values of uterine EMG for preterm delivery were compared in obese versus overweight/normal BMI patients. Hanley-McNeil test was used to compare receiver operator characteristics curves in these groups...
October 2016: Taiwanese Journal of Obstetrics & Gynecology
Eric Lavigne, Antonio Gasparrini, David M Stieb, Hong Chen, Abdool S Yasseen, Eric Crighton, Teresa To, Scott Weichenthal, Paul J Villeneuve, Sabit Cakmak, Frances Coates, Mark Walker
BACKGROUND: Daily changes in aeroallergens during pregnancy could trigger early labor, but few investigations have evaluated this issue. This study aimed to investigate the association between exposure to aeroallergens during the week preceding birth and the risk of early delivery among preterm and term pregnancies. METHODS: We identified data on 225,234 singleton births that occurred in six large cities in the province of Ontario, Canada, from 2004 to 2011 (April to October) from a birth registry...
September 28, 2016: Epidemiology
Heléne E K Sundelin, Olof Stephansson, Kari Johansson, Jonas F Ludvigsson
INTRODUCTION: An increased risk of preterm birth in women with Joint Hypermobility Syndrome (JHS) or Ehlers-Danlos Syndrome (EDS) is suspected. MATERIAL AND METHODS: In this nationwide cohort study from 1997 through 2011, women with either JHS or EDS or both disorders were identified through the Swedish Patient Register, and linked to the Medical Birth Register. Thereby 314 singleton births to women with JHS/EDS before delivery were identified. These births were compared with 1,247,864 singleton births to women without a diagnosis of JHS/EDS...
October 14, 2016: Acta Obstetricia et Gynecologica Scandinavica
Montse Palacio, Stefania Ronzoni, Luis Sánchez-Ramos, Kellie E Murphy
OBJECTIVE: To evaluate the efficacy of maintenance tocolysis with progestogens compared with placebo or no treatment in women with singleton pregnancies and arrested preterm labor. DATA SOURCES: Studies without language restrictions were identified from MEDLINE, EMBASE, PubMed, Scopus, the Cochrane Pregnancy and Childbirth Group's Trials Register, the Cochrane Central Register of Controlled Trials, and from inception to June 2015. MeSH headings for progestogens were combined with terms regarding labor, tocolysis, or preterm birth...
October 6, 2016: Obstetrics and Gynecology
Val Catanzarite, Larry Cousins, Sean Daneshmand, Wade Schwendemann, Holly Casele, Joanna Adamczak, Tevy Tith, Ami Patel
OBJECTIVE: To describe outcomes for a large cohort of women with prenatally diagnosed vasa previa, determine the percentage in patients without risk factors, and compare delivery timing and indications for singletons and twins. METHODS: This was a retrospective case series of women with prenatally diagnosed vasa previa delivered at a single tertiary center over 12 years. Potential participants were identified using hospital records and perinatal databases. Patients were included if vasa previa was confirmed at delivery and by pathologic examination...
October 6, 2016: Obstetrics and Gynecology
Amy C Hermesch, Amanda A Allshouse, Kent D Heyborne
OBJECTIVE: To investigate the relationship between body mass index (BMI) and the onset of parturition throughout gestation. METHODS: This was a secondary analysis of the Maternal-Fetal Medicine Units Network Preterm Prediction Study. Time-to-spontaneous-birth-event (ie, "survival") methods were used to study the association of BMI with the timing of spontaneous onset of labor throughout gestation with indicated births censored at delivery. A Kaplan-Meier estimate of the probability of spontaneous labor was compared with a log rank test across five categories of BMI (kg/m): underweight (less than 18...
October 6, 2016: Obstetrics and Gynecology
Eduardo Fernández-Martínez, Héctor Ponce-Monter, Luis E Soria-Jasso, Mario I Ortiz, José-Antonio Arias-Montaño, Guillermo Barragán-Ramírez, Cynthia Mayén-García
Uterine relaxation is crucial during preterm labor. Phosphodiesterase-4 (PDE-4) inhibitors have been proposed as tocolytics. Some thalidomide analogs are PDE-4 inhibitors. The aim of this study was to assess the uterus-relaxant properties of two thalidomide analogs, methyl 3-(4-nitrophthalimido)-3-(3,4-dimethoxyphenyl)-propanoate (4NO2PDPMe) and methyl 3-(4-aminophthalimido)-3-(3,4-dimethoxyphenyl)-propanoate (4APDPMe) and were compared to rolipram in functional studies of spontaneous phasic, K⁺-induced tonic, and Ca(2+)-induced contractions in isolated pregnant human myometrial tissues...
October 7, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Cristina Faralla, Gabrielle A Rizzuto, David E Lowe, Byoungkwan Kim, Cara Cooke, Lawrence R Shiow, Anna I Bakardjiev
Intrauterine infection is a major detriment for maternal-child health and occurs despite local mechanisms that protect the maternal-fetal interface from a wide variety of pathogens. The bacterial pathogen Listeria monocytogenes causes spontaneous abortion, stillbirth, and preterm labor in humans, and serves as a model for placental pathogenesis. Given the unique immunological environment of the maternal-fetal interface we hypothesized that virulence determinants with placental tropism are required for infection of this tissue...
October 10, 2016: Infection and Immunity
E B Carter, M G Tuuli, A O Odibo, G A Macones, A G Cahill
OBJECTIVE: To investigate the association between the number of prenatal visits (PNVs) and pregnancy outcomes in women with gestational diabetes (GDM) and Type 2 diabetes mellitus (DM). STUDY DESIGN: A 4-year prospective cohort study of women with GDM and DM and was conducted. Patients ⩾75th percentile for number of PNVs were compared with those ⩽25th percentile. The primary outcomes were large for gestational age (LGA) with birth weight >90% and neonatal intensive care unit (NICU) admission for >24 h...
October 13, 2016: Journal of Perinatology: Official Journal of the California Perinatal Association
Kenna Degner, Ronald R Magness, Dinesh M Shah
The uterine vasculature undergoes marked changes during pregnancy in order to provide the necessary increase in blood flow to support growth and nutrition of the uterus, placenta, and developing fetus. Pregnancy-associated uterine vascular transformations are orchestrated by a complex array of endocrine and cellular mechanisms to bring about structural modifications at the maternal-fetal interface, which collectively lead to development of the uteroplacental circulation. Understanding intrinsic uterine vascular remodeling in pregnancy is essential for understanding the physiologic and pathophysiologic regulation of maternal uterine blood flow...
October 12, 2016: Reproductive Sciences
Eun Hui Bae, Jong Woon Kim, Hong Sang Choi, Seong Kwon Ma, Soo Wan Kim
Background/Aims: Proteinuria is associated with hypertension and preeclampsia in pregnancy. However, the impact of random urine proteinuria on fetal and maternal outcomes has not been established. We investigated the influence of random urine proteinuria on the clinical outcomes of pregnancy. Methods: From January 2008 to December 2010, 2,822 patients were retrospectively studied. A total of 536 pregnant women with proteinuria in random urine and matched controls without proteinuria via propensity score matching were analyzed...
October 13, 2016: Korean Journal of Internal Medicine
Tilde B Østborg, Pål R Romundstad, Torbjørn M Eggebø
INTRODUCTION: The aim of the study was to compare the duration of active phase of labor in women with spontaneous or induced start of labor. MATERIAL AND METHODS: An observational cohort study was performed at Stavanger University Hospital in Norway between January 2010 and December 2013 and 19 524 women delivered during the study period. Data for the study were collected from an electronic birth journal. Women with previous cesarean section, multiple pregnancy, breech or transverse lie, preterm labor or prelabor cesarean section were excluded...
October 12, 2016: Acta Obstetricia et Gynecologica Scandinavica
Jerrie S Refuerzo, Fransisca Leonard, Nataliya Bulayeva, David Gorenstein, Giuseppe Chiossi, Alejandra Ontiveros, Monica Longo, Biana Godin
Preterm labor caused by uterine contractions is a major contributor to neonatal morbidity and mortality. Treatment intended to reduce uterine contractions include tocolytic agents, such as indomethacin. Unfortunately, clinically used tocolytics are frequently inefficient and cross the placenta causing fetal side effects. Here we show for the first time in obstetrics the use of a targeted nanoparticle directed to the pregnant uterus and loaded with a tocolytic for reducing its placental passage and sustaining its efficacy...
October 11, 2016: Scientific Reports
Giovanni Grandi, Lucrezia Pignatti, Francesca Ferrari, Giulia Dante, Isabella Neri, Fabio Facchinetti
INTRODUCTION: Inflammation might be an important underlying cause of preterm birth. Our aim is to explore whether vaginal administration α-lipoic acid reduces cervical inflammation and shortening after primary tocolysis. Matherials and Methods: Singleton pregnancies between 24-30 weeks remaining undelivered after hospitalization for preterm labor were randomly allocated to placebo (20 women, 15 analyzed) or vaginal ALA 400 mg daily (20 women, 17 analyzed) for 30 days. A cervical swab to quantify pro-inflammatory (IL1, IL2, IL6, IL8, TNFα) and anti-inflammatory (IL4, IL10) cytokines as well as transvaginal ultrasound cervical length measurement (CL) were performed before and after treatment...
October 9, 2016: Journal of Maternal-fetal & Neonatal Medicine
Jaroslaw Kalinka, Elwira Agata Jasinska, Piotr Laudanski, Adam Bitner
We present a rare case of a complication after pessary insertion during pregnancy due to short cervix. A woman in the 35th week of gestation was admitted to the Department of Perinatology due to preterm labor. The patient's history revealed cervical pessary insertion during the 29th week of pregnancy due to a cervix of 18 mm in length. Because of threatened preterm labor, the pessary was removed. After pessary removal, a rupture of the cervix was diagnosed. Because of active labor and cervical rupture, a cesarean section was performed and a healthy newborn was delivered...
October 8, 2016: Journal of Obstetrics and Gynaecology Research
N Sung, H J Byeon, M D Salazar Garcia, A Skariah, L Wu, S Dambaeva, K Beaman, A Gilman-Sachs, J Kwak-Kim
Alterations in normal balance of B cell subsets have been reported in various rheumatic diseases. In this study, we report a woman with a history of recurrent pregnancy losses (RPL) and infertility who had low levels of memory B cells. A 35-year-old woman with a history of RPL and infertility was demonstrated to have increased peripheral blood CD19+ B cells with persistently low levels of memory B cell subsets. Prior to the frozen donor egg transfer cycle, prednisone and intravenous immunoglobulin G (IVIg) treatment was initiated and patient achieved dichorionic diamniotic twin pregnancies...
September 28, 2016: Journal of Reproductive Immunology
Gustaf Brander, Mina Rydell, Ralf Kuja-Halkola, Lorena Fernández de la Cruz, Paul Lichtenstein, Eva Serlachius, Christian Rück, Catarina Almqvist, Brian M D'Onofrio, Henrik Larsson, David Mataix-Cols
Importance: Perinatal complications may increase the risk of obsessive-compulsive disorder (OCD). Previous reports were based on small, retrospective, specialist clinic-based studies that were unable to rigorously control for unmeasured environmental and genetic confounding. Objective: To prospectively investigate a wide range of potential perinatal risk factors for OCD, controlling for unmeasured factors shared between siblings in the analyses. Design, Setting, and Participants: This population-based birth cohort study included all 2 421 284 children from singleton births in Sweden from January 1, 1973, to December 31, 1996, who were followed up through December 31, 2013...
October 5, 2016: JAMA Psychiatry
Wangsheng Wang, Chao Liu, Kang Sun
Rupture of fetal membranes (ROM) can initiate parturition at both term and preterm birth. Apoptosis of the amnion epithelium plays a key role in structural remodeling of the membranes preceding ROM. However, the causative factors for apoptosis remain unidentified. Toward the end of gestation, a feed-forward regeneration of cortisol via 11β-hydroxysteroid dehydrogenase 1 (11β-HSD1) exists in the fetal membranes. Here we have examined whether cortisol accumulation is a causative factor for amnion cells apoptosis...
October 3, 2016: Endocrinology
George A Macones
No abstract text is available yet for this article.
October 2016: American Journal of Obstetrics and Gynecology
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