What is the facilitation of cervical dilatation during labor called?

Appeared in: MP CHO-2020

Explanation

Cervical effacement is the process where the cervix thins out and shortens during the first stage of labor.
This 'taking up' of the cervix into the lower part of the uterus reduces its structural resistance.
Effacement is a necessary precursor to and facilitator of cervical dilatation (opening), allowing the fetus to pass through the birth canal.
In women experiencing their first labor (primigravidae), effacement often precedes significant dilatation.

Option A: Hegar's sign is a probable sign of early pregnancy, characterized by the softening of the lower uterine segment. It is not a process that occurs during labor.
Option C: Braxton Hicks contractions are irregular, non-progressive 'practice' contractions. They do not cause the progressive cervical changes (effacement and dilatation) that define true labor.
Option D: This option is incorrect because a correct term, 'Cervical effacement,' is provided in the options.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Cervical Changes During Labor as background academic context rather than a clinical decision trigger.
Nurses and midwives perform sterile vaginal examinations to assess both effacement (as a percentage) and dilatation (in centimeters) to monitor the progress of labor.
The relationship between effacement and dilatation helps determine the phase of labor (e.g., latent vs. active) and guides clinical decision-making.
Accurate assessment is crucial for deciding on interventions such as labor augmentation or determining if the second stage of labor has begun.

How to Approach the Question

This is a recall-based question testing knowledge of fundamental obstetric terminology.
First, analyze the question to understand the core concept: it asks for the name of the process that helps or makes possible the opening of the cervix during labor.
Mentally define 'cervical dilatation' as the opening of the cervix.
Evaluate each option based on your knowledge:
A) Hegar's sign: Recall that this is a sign of early pregnancy, not labor. Eliminate this option.
B) Cervical effacement: Recall that this is the thinning and shortening of the cervix. A thin cervix can open more easily than a thick one. This is a strong candidate.

Concept Tested & Keywords

QCbj9_KjVcGormuCJ7yYMs

E6 Obstetrics Williams pp. 5-16, 37-57, 24-42

Practise the full MP CHO-2020

Attempt every question from this paper in a timed mock, then review the full solution for each one.