What defines effacement in a pregnant woman?

Effacement in a pregnant woman refers to the process of the cervix thinning and shortening in preparation for labor and delivery. As a woman approaches labor, the cervix undergoes significant changes to facilitate the passage of the baby through the birth canal. Effacement is measured in percentages, with 0% indicating no effacement and 100% indicating that the cervix is completely thinned out.

This process is essential because a fully effaced cervix allows for easier dilation once labor begins. While other terms such as dilation refer to the widening of the cervical canal, effacement specifically pertains to the cervix's change in thickness and length. Understanding effacement is vital in assessing a woman’s progress during labor and helps healthcare providers determine appropriate management strategies as she moves closer to delivery.