Which of the following parameters is included in a biophysical profile, EXCEPT?

NORCERT 8 Mains-2025

Obstetrics & Gynaecology

Easy

Appeared in: NORCERT 8 Mains-2025

Explanation

Cervical dilation is not a component of the Biophysical Profile (BPP), which is a test for fetal well-being.
The BPP assesses five variables: non-stress test (NST), fetal breathing movements, gross body movements, fetal tone, and amniotic fluid volume.
Cervical dilation is a measure of labor progression, assessed by a manual vaginal exam.
It is a key component of the Bishop Score, a system used to evaluate the readiness of the cervix for the induction of labor.

Option B: This is incorrect because fetal tone is a standard component of the BPP.
Option C: This is incorrect because fetal breathing movements are a standard component of the BPP.
Option D: This is incorrect because amniotic fluid volume is a standard component of the BPP.

Visual 1: Table: Components and Scoring of the Biophysical Profile (BPP). This table will list the five parameters (NST, Fetal Breathing, Fetal Movement, Fetal Tone, Amniotic Fluid Volume), the criteria for a normal score (2 points), and the criteria for an abnormal score (0 points), helping students memorize the components.
Visual 2: Table: Bishop Score Components. This table will show the components of the Bishop Score (Dilation, Effacement, Station, Consistency, Position) to contrast it with the BPP and clarify its purpose in assessing cervical favorability for labor induction.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Components of the Biophysical Profile (BPP) as background academic context rather than a clinical decision trigger.
The BPP is a critical tool for managing high-risk pregnancies, such as those complicated by preeclampsia, fetal growth restriction, or post-term gestation, to identify fetuses at risk for hypoxia.
A low BPP score (e.g., 4 or less) is strongly associated with fetal acidemia and an increased risk of perinatal death, often prompting consideration for immediate delivery.
A normal BPP score of 8 or 10 is highly reassuring, indicating a low risk of fetal death within the following week.

How to Approach the Question

First, identify the keyword 'EXCEPT' in the question stem. This indicates you must find the option that is NOT a parameter of the biophysical profile.
Second, recall the five components of a standard Biophysical Profile (BPP): Non-stress test (NST), fetal breathing movements, gross body movements, fetal tone, and amniotic fluid volume.
Third, evaluate each option against the known components of the BPP.
Options B, C, and D ('Fetal tone,' 'Fetal breathing movements,' and 'Amniotic fluid volume') are all standard components of the BPP.
Option A, 'Cervical dilation,' is not on the list. It is part of the Bishop score, which assesses cervical readiness for labor, a different clinical purpose.
Therefore, 'Cervical dilation' is the correct answer because it is the exception.

Concept Tested & Keywords

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