What is the expected weight and length of a baby born at 28 weeks?

Appeared in: PGICH Noida NO-2025

Explanation

At 28 weeks of gestation, the fetus is in a period of rapid growth and development.
The average weight of a fetus at this stage is approximately 1.2 kg (1200 grams).
The average total length (crown-heel) is around 38 cm.
These values represent the 50th percentile for fetal growth at this specific gestational age.

Option A: A weight of 2.24 kg and a length of 45 cm are significantly higher than the average for a 28-week fetus.
Option C: A weight of 2.5 kg and a length of 48 cm are characteristic of a late preterm or early term infant, not a 28-week fetus.
Option D: Similar to the previous option, a weight of 2.5 kg and a length of 47 cm are too high for a 28-week fetus.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Fetal Growth Milestones as background academic context rather than a clinical decision trigger.
Assessing fetal growth is crucial for monitoring the health of the pregnancy and preparing for potential complications.
A baby born at 28 weeks is very premature and will require specialized care in a Neonatal Intensive Care Unit (NICU) due to underdeveloped organs, particularly the lungs.
Deviations from expected growth (e.g., fetal growth restriction or macrosomia) can indicate underlying maternal or fetal issues and require further investigation and management.

How to Approach the Question

Identify the core of the question: It asks for a specific factual data point related to fetal development.
Recognize that this is a recall question based on standard fetal growth milestones.
Recall or look up the average weight and length for the specified gestational age (28 weeks).
Compare the known values (approx. 1.2 kg and 38 cm) with the given options.
Eliminate options that represent significantly different gestational ages (e.g., values for 34 weeks or term babies).
Select the option that most closely matches the expected measurements for a 28-week fetus.

Concept Tested & Keywords

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E6 Anatomy Grays 43e Vol 1 Part 3 p. 10-12

Practise the full PGICH Noida NO-2025

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