نتایج جستجو برای: preterm birth

تعداد نتایج: 141906  

Journal: :BJOG : an international journal of obstetrics and gynaecology 2014
B M Kazemier P E Buijs L Mignini J Limpens C J M de Groot B W J Mol

BACKGROUND Information about the recurrence of spontaneous preterm birth in subsequent twin/singleton pregnancies is scattered. OBJECTIVES To quantify the risk of recurrence of spontaneous preterm birth in different subtypes of subsequent pregnancies. SEARCH STRATEGY An electronic literature search in OVID MEDLINE and EMBASE, complemented by PubMed, to find recent studies. SELECTION CRITE...

Journal: :The American journal of clinical nutrition 2010
Lisa M Bodnar Katherine P Himes Raman Venkataramanan Jia-Yuh Chen Rhobert W Evans Jennifer L Meyer Hyagriv N Simhan

BACKGROUND Poor maternal folate status has been associated with an increased risk of preterm birth. However, major gaps remain in our understanding of how individual folate species relate to preterm birth. OBJECTIVE Our objective was to assess the association between maternal folate status as measured by 5-methyltetrahydrofolate (5MeTHF), 5-formyltetrahydrofolate (5FoTHF), and folic acid conc...

Journal: :Pediatrics 2007
Karolina Lindström Birger Winbladh Bengt Haglund Anders Hjern

OBJECTIVE Increasing numbers of infants born preterm survive into adulthood. In this study, we analyzed the effect of having been born preterm on disability and vocational success in young adults. METHODS A Swedish national cohort of 522,310 infants born in 1973-1979 were followed up for disabilities and income in national registers in 2002 at the age of 23 to 29. Hypotheses were tested in mu...

Journal: :Obstetrics and gynecology 2010
Shayna N Conner Heather A Frey Alison G Cahill George A Macones Graham A Colditz Methodius G Tuuli

OBJECTIVE To assess whether loop electrosurgical excision procedure (LEEP) increases the risk for preterm birth before 37 weeks of gestation and clarify whether the increased risk for preterm birth is attributable to the procedure itself or to risk factors associated with cervical dysplasia. DATA SOURCES Two authors performed a search of the relevant data through February 2013 using PubMed, E...

Sekhavat L, Zare Tezerjani F

Background: Preterm labor is a major problem in obstetric practice. Rates of preterm birth vary between different populations and ethnic groups. In maternal fetal medicine, gender differences in outcome are often observed. Epidemiologic studies have suggested that the incidence of preterm birth is also higher in pregnancies carrying a male fetus. The purpose of this article is to review the evi...

Journal: :Swiss medical weekly 2005
Arnaud Chiolero Pascal Bovet Fred Paccaud

PURPOSE To study the association between maternal smoking during pregnancy and low birth weight (LBW), small-for-gestational-age birth weight (SGA) and preterm birth, and to quantify the population-attributable fractions for these outcomes in Switzerland. METHODS Data were gathered for all births in the Canton of Vaud (Switzerland) over a twelvemonth period in 1993-1994. LBW was defined as bi...

2012
Jane E Norman Andrew Shennan Phillip Bennett Steven Thornton Stephen Robson Neil Marlow John Norrie Stavros Petrou Neil Sebire Tina Lavender Sonia Whyte

BACKGROUND Preterm birth is a global problem, with a prevalence of 8 to 12% depending on location. Several large trials and systematic reviews have shown progestogens to be effective in preventing or delaying preterm birth in selected high risk women with a singleton pregnancy (including those with a short cervix or previous preterm birth). Although an improvement in short term neonatal outcome...

2013

Women who did not intend their pregnancy had an elevated likelihood of preterm birth (Table 2, page 69). Compared with those whose pregnancy was intended, women who were unsure about their pregnancy were at higher risk of preterm birth (odds ratio, 1.4), as were those reporting their pregnancy as unwanted (1.4) or mistimed (1.2). The risk of preterm birth was associated with unintendedness amon...

2016
David M Ferrero Jim Larson Bo Jacobsson Gian Carlo Di Renzo Jane E Norman James N Martin Mary D'Alton Ernesto Castelazo Chris P Howson Verena Sengpiel Matteo Bottai Jonathan A Mayo Gary M Shaw Ivan Verdenik Nataša Tul Petr Velebil Sarah Cairns-Smith Hamid Rushwan Sabaratnam Arulkumaran Jennifer L Howse Joe Leigh Simpson

BACKGROUND Preterm birth is the most common single cause of perinatal and infant mortality, affecting 15 million infants worldwide each year with global rates increasing. Understanding of risk factors remains poor, and preventive interventions have only limited benefit. Large differences exist in preterm birth rates across high income countries. We hypothesized that understanding the basis for ...

Journal: :BMJ 2009
Helena M Gardiner Jean-Claude Fouron

Background: Low plasma folate concentrations in pregnancy are associated with preterm birth. Here we show an association between preconceptional folate supplementation and the risk of spontaneous preterm birth. Methods and Findings: In a cohort of 34,480 low-risk singleton pregnancies enrolled in a study of aneuploidy risk, preconceptional folate supplementation was prospectively recorded in th...

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