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  • What are the stages of labor? | NICHD - NICHD - Eunice Kennedy Shriver . . .
    The first stage of labor happens in two phases: early labor and active labor Typically, it is the longest stage of the process During early labor: The opening of the uterus, called the cervix, starts to thin and open wider, or dilate Contractions get stronger, last 30 to 60 seconds, and come every 5 to 20 minutes
  • Labor and Delivery - NICHD - Eunice Kennedy Shriver National Institute . . .
    Compared with women who have a typical first-time pregnancy, women who attempt labor after a previous cesarean delivery experience a slower progression of labor, especially during the stages when the cervix dilates from 4 to 7 or 8 centimeters
  • When does labor usually start? | NICHD - NICHD - Eunice Kennedy Shriver . . .
    For most women, labor begins sometime between week 37 and week 42 of pregnancy Labor that occurs before 37 weeks of pregnancy is considered premature, or preterm 1 Just as pregnancy is different for every woman, the start of labor, the signs of labor, and the length of time it takes to go through labor vary from woman to woman and even from pregnancy to pregnancy
  • Video Text Alternative: Stages of Labor - NICHD
    Narrator: Labor has three stages In the first stage of labor, the body prepares to give birth There are two phases: early and active Early labor can last from hours to days First-time moms may spend more time in this phase The cervix, or the opening to the uterus, begins to soften; efface, or thin out; and dilate, or open
  • What are some common complications during labor and delivery?
    Labor that does not progress Sometimes contractions weaken, the cervix does not dilate enough or in a timely manner, or the infant's descent in the birth canal does not proceed smoothly If labor is not progressing, a health care provider may give the woman medications to increase contractions and speed up labor, or the woman may need a
  • Labor and Delivery | NICHD - NICHD - Eunice Kennedy Shriver National . . .
    "Labor" and "delivery" describe the process of childbirth Contractions of the uterus and changes in the cervix (the opening of the uterus) prepare a woman's body to give birth Then the baby is born, and the placenta follows NICHD studies many aspects of labor and delivery: their basic biology, childbirth practices, and management of related problems A separate topic covers preterm labor
  • About Labor and Delivery | NICHD - NICHD - Eunice Kennedy Shriver . . .
    Labor and delivery are the process by which a baby is born, from the body's preparations to when the baby and the placenta leave the womb The earliest stage of labor prepares the body for delivery This is a period of hours or days when the uterus regularly contracts and the cervix gradually thins out (called "effacing") and opens (called "dilation") to allow the baby to pass through
  • Labor and Delivery Resources | NICHD - NICHD - Eunice Kennedy Shriver . . .
    NICHD: Stages of Labor Illustrated videos produced by NICHD explain the three stages of labor; the videos are also available in Spanish Is It Worth It? The NICHD Is It Worth It? videos discuss the benefits of waiting until 39 weeks to deliver unless there is a medical need to deliver earlier Full-length video (5 minutes) 60-second version
  • About Pregnancy | NICHD - NICHD - Eunice Kennedy Shriver National . . .
    Pregnancy is the term used to describe the period in which a fetus develops inside a woman's womb or uterus Pregnancy usually lasts about 40 weeks, or just over 9 months, as measured from the last menstrual period to delivery Health care providers refer to three segments of pregnancy, called trimesters The major events in each trimester are described below 1
  • Pregnancy - NICHD - Eunice Kennedy Shriver National Institute of Child . . .
    Labor and Delivery The Consortium on Safe Labor, within the DIPHR Epidemiology Branch, evaluated the appropriateness of relying on the Friedman curve, which has traditionally been used to plot hours of labor against cervical dilation in centimeters, to guide decision making This study found that labor progresses more slowly than previously





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