First stage of the labour last for hours in primigravida?

ESIC Nursing Officer 2016 (shift-1)

Obstetrics & Gynaecology

Easy

Appeared in: ESIC Nursing Officer 2016 (shift-1)

Explanation

The first stage of labor begins with the onset of regular contractions and ends with complete cervical dilatation (10 cm).
For a primigravida (a woman in her first pregnancy), the average duration of this stage is approximately 12 hours.
This duration encompasses both the early (latent) phase, where cervical change is slow, and the active phase, where dilatation accelerates.
This is significantly longer than in a multigravida (a woman who has previously given birth), where the first stage averages about 6-8 hours.

Option A: A duration of 4 hours is significantly shorter than the expected average for a primigravida's first stage of labor.
Option C: While 9 hours is a possible duration for the first stage in a primigravida and falls within the normal range, it is not the standard average taught and expected in examinations.
Option D: A duration of 6 hours is the typical average for the first stage of labor in a multigravida, not a primigravida.

Visual 1: Chart - A comparative chart showing the average duration of the three stages of labor for both primigravida and multigravida women. This helps visualize the differences clearly.
Visual 2: Diagram - A diagram of Friedman's labor curve, illustrating the latent and active phases of the first stage of labor and showing how cervical dilatation progresses over time.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain The average duration of the first stage of labor in a woman experiencing her first pregnancy (primigravida) as background academic context rather than a clinical decision trigger.
Understanding the normal duration of labor is crucial for nurses to identify deviations such as prolonged or arrested labor, which can increase risks for both mother and baby.
Nurses use a partograph to monitor and chart the progress of labor, comparing the patient's cervical dilatation against the expected curve. This helps in the early detection of abnormalities.
Prolonged labor can lead to maternal exhaustion, dehydration, infection, and postpartum hemorrhage, as well as fetal distress and hypoxia. Timely intervention is key.

How to Approach the Question

First, identify the key terms in the question: 'First stage of labour' and 'primigravida'.
Recall the definition of the first stage of labor (from onset of true contractions to 10 cm cervical dilatation).
Remember the distinction between a primigravida (first pregnancy) and a multigravida (subsequent pregnancy), as labor duration differs significantly.
Access your knowledge of standard obstetric values. The average duration for a primigravida's first stage is a common factual recall point.
Compare the given options to the known average. 12 hours is the standard value.
Eliminate other options by identifying why they are incorrect (e.g., 6 hours is for a multigravida, 4 hours is too short).

Concept Tested & Keywords

Concept Tested: The average duration of the first stage of labor in a woman experiencing her first pregnancy (primigravida).
Stem keywords: First stage, labour, primigravida, hours
Lead-in keywords: last for

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