What is Effacement, Dilation and Station?

October 27th, 2010 | Author: pregnancy diary

In most pregnancies, at about 37 weeks, your doctor or midwife will begin checking your cervix for effacement, dilation and station. She will then report back to you the results. You may feel very confused. Below are explanations of each stage of your body’s preparation for delivering your baby.

Effacement
As labor nears your cervix begins to shorten and thin out. This action is referred to as effacement. As your cervix begins to efface, the plug keeping the entrance to the uterus sealed is released. This is called your mucus plug and it may contain some blood.It is is generally measured in percentages by doctors and midwives from 0% to 100% which means not effaced at all to completely effaced and thin. When it is completely effaced it becomes a part of the uterine wall, allowing the baby to pass through.

Dilation
Dilation is the process of the mouth of the cervix opening and widening, which allows your baby to pass through. As the cervix dilates, some people describe cramping and pressure, similar to what you would feel during menstruation. If you begin dilating in the second trimester or at a rapid rate before the last month of your pregnancy it can be a sign of premature labor. If this is the case your doctor or midwife will advise you on what to do next.

Station
Station is referring to how far down his head has come into your pelvis. If your baby has dropped, but has not yet settled into your pelvis to begin his decent, it is measured in centimeters as a negative station goes from -3 to -1. Once your baby has settled into your pelvis, but before he starts his descent to the birth canal, it is referred to as a zero (0) station. Once your baby starts heading towards the cervix, it is referred to as a positive station from 1 to 3. During this time it is likely that you will feel an increase of pressure and pain in your pelvic bone and vaginal area.

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What is Effacement, Dilation and Station?

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