What is the total iron requirement during an average pregnancy?

Appeared in: UPPSC-2021

Explanation

The total iron requirement for an average singleton pregnancy is approximately 1000 mg.
This amount is needed to support the physiological changes of pregnancy and fetal development.
The requirement is broken down into three main parts: about 300 mg for the fetus and placenta, 500 mg for the expansion of the mother's red blood cell volume, and 200 mg to cover blood loss at delivery.

Option A: This value (300 mg) only represents the amount of iron transferred to the fetus and placenta.
Option B: This value (800 mg) accounts for the fetus/placenta and the expansion of maternal red blood cell mass, but it omits the significant iron loss that occurs during and after delivery.
Option D: This value (1200 mg) is higher than the standard estimated iron requirement for a typical singleton pregnancy.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Nutritional requirements during pregnancy as background academic context rather than a clinical decision trigger.
Nurses must educate pregnant women on the importance of iron supplementation, as diet alone is often insufficient. The standard recommendation is a daily supplement of at least 27 mg of elemental iron.
Patient teaching should include how to take iron supplements (e.g., with vitamin C to enhance absorption, and avoiding tea/coffee around the time of intake) and how to manage common side effects like constipation and nausea.
Screening for anemia via hemoglobin/hematocrit levels is a standard part of antenatal care, typically done at the first visit and again around 24-28 weeks.

How to Approach the Question

Identify the core of the question: it asks for the 'total iron requirement' during an 'average pregnancy'.
Recognize this as a factual recall question based on standard physiological data in obstetrics.
Recall the approximate total value, which is 1000 mg.
Mentally break down the total into its components to confirm the value: ~300 mg (fetus/placenta) + ~500 mg (maternal RBCs) + ~200 mg (delivery loss).
Evaluate the options: 300 mg and 800 mg are components of the total but are incomplete. 1200 mg is an overestimation. 1000 mg correctly represents the sum of all components.

Concept Tested & Keywords

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E6 Obstetrics Williams p. 80-94

Practise the full UPPSC-2021

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