Caughey, A. Measuring perinatal complications: methodologic issues related to gestational age. BMC Pregnancy Childbirth 7: Complications of term pregnancies beyond 37 weeks of gestation. Obstet Gynecol 1 : What is the best measure of maternal complications of term pregnancy: ongoing pregnancies or pregnancies delivered?
Am J Obstet Gynecol 4 : Declercq, E. New York: Childbirth Connection. Divon, M. Male gender predisposes to prolongation of pregnancy. Flenady, V. Major risk factors for stillbirth in high-income countries: a systematic review and meta-analysis. Lancet : Giscombe, C. Explaining disproportionately high rates of adverse birth outcomes among African Americans: the impact of stress, racism, and related factors in pregnancy.
Psychol Bull 5 : Halloran, D. Effect of maternal weight on postterm delivery. J Perinatol 32 2 : Hilder, L. Prolonged pregnancy: evaluating gestation-specific risks of fetal and infant mortality. Br J Obstet Gynaecol 2 : BMJ : ; author reply Huang, D. Determinants of unexplained antepartum fetal deaths. Obstet Gynecol 95 2 : Johnsen, S. Fetal size in the second trimester is associated with the duration of pregnancy, small fetuses having longer pregnancies.
BMC Pregnancy Childbirth 8: Jukic, A. Length of human pregnancy and contributors to its natural variation. Hum Reprod 28 10 : Khambalia, A. Predicting date of birth and examining the best time to date a pregnancy. Int J Gynaecol Obstet 2 : Kramer, M. Analysis of perinatal mortality and its components: time for a change? Am J Epidemiol 6 : Maiti, K. Evidence that fetal death is associated with placental aging.
Am J Obstet Gynecol, , Margerison-Zilko, C. Postterm birth as a response to environmental stress : The case of September 11, Evol Med Public Health 1 : Mogren, I. Recurrence of prolonged pregnancy. Int J Epidemiol 28 2 : Morken, N. Perinatal mortality by gestational week and size at birth in singleton pregnancies at and beyond term: a nationwide populationbased cohort study.
BMC Pregnancy Childbirth Muglu, J. Risks of stillbirth and neonatal death with advancing gestation at term: A systematic review and meta-analysis of cohort studies of 15 million pregnancies. PLoS Med 16 7 , e Oberg, A.
Maternal and fetal genetic contributions to postterm birth:familial clustering in a population-based sample of , Swedish births. Olesen, A. An estimate of the tendency to repeat postterm delivery. Epidemiology 10 4 : Perinatal and maternal complications related to postterm delivery: a national register-based study, Am J Obstet Gynecol 1 : Rosenstein, M.
Risk of stillbirth and infant death stratified by gestational age. Savitz, D. Comparison of pregnancy dating by last menstrual period, ultrasound scanning, and their combination.
Am J Obstet Gynecol 6 : Smith, G. Life-table analysis of the risk of perinatal death at term and post term in singleton pregnancies. Am J Obstet Gynecol 3 : Get expert tips and resources from March of Dimes and CDC to increase your chance of having a healthy, fully-term pregnancy and baby. BabyLiveAdvice lets you tap into a virtual network of nurses, midwives, lactation consultants, nutritionists and health professionals for support when you need it most.
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See all in Video. You might also like You might also like. Natural ways to bring on labour: photos. Does induced labour hurt more? What is a cervical sweep? The role of a birth partner. Get the BabyCentre app. A baby born prior to week 37 is considered premature. The closer to term estimated date of confinement, or EDC the baby is born, the higher its chances of survival - after 34 weeks gestation with good paediatric care almost all babies will survive.
Premature babies are often afflicted by various health problems, caused by immature internal organs. Respiratory difficulties and an increased susceptibility to infection are common. Often there is no known cause for a premature labour; however, some of the maternal risk factors may include:. Around five out of every babies will be overdue, or more than 42 weeks gestation. If you have gone one week past your due date without any signs of impending labour, your doctor will want to closely monitor your condition.
Tests include:. The placenta starts to deteriorate after 38 weeks or so, which means an overdue baby may not get enough oxygen. An overdue baby could also grow too large for vaginal delivery.
Generally, an overdue baby will be induced once it is two weeks past its expected date. Some of the methods of induction include:. This page has been produced in consultation with and approved by:. In Victoria, you can have two types of abortion: surgical and medication. Both types are safe and reliable. You can have a medication abortion up to nine weeks of pregnancy.
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