The process by which the muscular fibers of the cervix are pulled upward and merges with the fibers of the lower uterine segment is?

Appeared in: DHS 2018 shift 1st

Explanation

Effacement is the process where the muscular fibers of the cervix are drawn upward, merging with the lower uterine segment.
This action causes the cervix to shorten and thin out, transforming it from a 3 cm long canal to a paper-thin structure.
It is a fundamental change that prepares the cervix for dilatation, allowing the passage of the fetus.
The expulsion of the mucous plug, known as the 'show', is a direct result of effacement.

Option A: Polarity of the uterus refers to the coordinated action of the upper and lower uterine segments (contraction and relaxation), not the physical change of the cervix itself.
Option C: Efforts refer to the maternal pushing action during the second stage of labor to expel the fetus.
Option D: Engagement describes the descent of the fetal presenting part into the pelvic inlet; it is a measure of fetal position, not a change in the cervix.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Physiology of the first stage of labor, specifically cervical changes as background academic context rather than a clinical decision trigger.
Nurses assess effacement during vaginal examinations in labor, documenting it as a percentage (from 0% to 100%). This assessment is crucial for tracking labor progress.
Understanding the difference between effacement in primigravidae (effacement before dilation) and multiparae (effacement and dilation together) helps the nurse anticipate the labor pattern.
What if? If a patient's cervix is dilating but not effacing, this could signal a dysfunctional labor pattern. The nurse should report this to the obstetrician, as it may indicate a need for labor augmentation with oxytocin, because full dilation is not possible without complete effacement.

How to Approach the Question

First, break down the question stem to identify the key process being described: 'muscular fibers of the cervix', 'pulled upward', and 'merges with the fibers of the lower uterine segment'.
Recognize that this describes a physical transformation of the cervix itself during labor.
Evaluate each option based on this core concept.
Option A, 'Polarity of uterus', relates to the coordinated function of different parts of the uterus, not the structural change of the cervix.
Option C, 'Efforts', refers to the mother's pushing, which is an action, not a cervical change.
Option D, 'Engagement', describes the baby's position relative to the pelvis, not a change in the mother's anatomy.

Concept Tested & Keywords

Concept Tested: Physiology of the first stage of labor, specifically cervical changes.
Stem keywords: muscular fibers, cervix, pulled upward, lower uterine segment
Lead-in keywords: is

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E6 Obstetrics Williams p. 9-26

E6 Midwifery Obstetrics and Gynecology Nursing Sandeep Kaur p. 18-26

Practise the full DHS 2018 shift 1st

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