how many centimeters dilated before baby comes?
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It begins when your cervix starts to open (dilate) and ends when it is completely open (fully dilated) at 10 centimeters. When the cervix dilates from 0 to 3 or 4 centimeters, contractions get stronger as time progresses. Mild contractions begin at 15 to 20 minutes apart and last 60 to 90 seconds.
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Cervical Dilation in the First Stage of Labor: Active phase: The cervix expands from 4 cm to 7 cm and contractions become more intense and regular. Transition phase: The cervix dilates to 10 cm. Transition ends when the cervix has reached 10 cm and is fully dilated.
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The active phase. After your cervix dilates to around 3 cm (1 inch), you will enter the active phase of labour, where things really start to get rolling. For the next few hours, your contractions will be strong, painful, and regular. Unlike the early phase, you may no longer be able to talk through these contractions.
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Stage two: full dilation and pushing Once the cervix has reached 10 cm, it is time to push the baby out. Contractions continue but also produce a strong urge to push. This urge might feel like an intense need to have a bowel movement. This stage can last anywhere from a few minutes to a few hours.
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Active labor. Now it's time for the real work to begin. During active labor, your cervix will dilate from 6 centimeters (cm) to 10 cm. Your contractions will become stronger, closer together and regular.
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When it is 50 percent effaced, it is about two centimeters long. When it is 100 percent effaced, it is "paper-thin." Effacement can happen over days before labor starts. Or, it can happen over hours as labor progresses. With a first labor, it can take quite a while for the cervix to completely efface.
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During labor, the cervix opens to accommodate the passage of baby's head into the vagina, which is around 10 centimeters (cm) dilated for most term babies.
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Measured in centimeters (cm) from 0 to 10, dilation tells you how far the cervix has opened. Dilation may begin slowly, without apparent contractions, in the days or weeks before birth. Once active labor begins, the cervix dilates to 10 cm. You will not feel dilation, but your doctor will measure it.
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Historically doctors considered it stalled if it lasted longer than 20 hours for a first-time mom, or 14 hours for other mothers. -"Active labor" begins later than once thought, not until the cervix is dilated 6 centimeters.
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One woman may go from having a closed cervix to giving birth in a matter of hours, while another is 1–2 cm dilated for days or weeks. Some women do not experience any dilation until they go into active labor. This means that the cervix is completely closed initially, but it widens to 10 cm as labor progresses.
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Dilation: Your cervix opens. Typically, if you're 4 cm dilated, you're in the active stage of labor; if you're fully dilated, you're ready to start pushing.
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The fact that you're 3 centimeters dilated right now means that your cervix is already starting to open up. That's a great sign!
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Dilating to 1 centimeter does not necessarily mean that labor is only hours or days away. The cervix can be dilated to 1 centimeter for weeks before the beginning of labor. This extent of dilation only signals that the cervix is starting to prepare for labor.
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Once your cervix is 3 or 4 cm dilated, you move into phase 2, called active labor. The contractions are stronger and occur more often. It is important to time your contractions.
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Early labor will last approximately 8-12 hours. Your cervix will efface and dilate to 4 cm. Contractions will last about 30-45 seconds, giving you 5-30 minutes of rest between contractions.
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In general, though, once active labor begins, the average progress is about 1 centimeter dilation per hour for your first baby and 1 1/2 centimeters per hour for a second baby.
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The First Stage of Labor. The first stage is the longest part of labor and can last up to 20 hours. It begins when your cervix starts to open (dilate) and ends when it is completely open (fully dilated) at 10 centimeters. When the cervix dilates from 0 to 3 or 4 centimeters, contractions get stronger as time progresses ...