What is the total weight gain during pregnancy?

Appeared in: RUHS, Jaipur, M.Sc Nursing Entrance Exam-2023

Explanation

For a woman with a normal pre-pregnancy Body Mass Index (BMI of 18.5-24.9), the recommended total weight gain is between 11.5 kg and 16 kg.
Among the given options, 12.5 kg is the most appropriate value, as it falls within this healthy range and represents a typical average.
This weight gain is essential to support the growth of the fetus, placenta, amniotic fluid, and the necessary physiological changes in the mother's body, such as increased blood volume and fat stores.

Option A: A weight gain of 5 kg is significantly below the recommended range for a normal pregnancy. This level of gain is insufficient for proper fetal growth and maternal health, indicating potential undernutrition.
Option B: A weight gain of 8 kg is also below the minimum recommended amount of 11.5 kg for a woman with a normal BMI.
Option C: While closer to the healthy range, 10 kg is still below the recommended minimum of 11.5 kg for a woman with a normal pre-pregnancy BMI.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Recommended weight gain during pregnancy as background academic context rather than a clinical decision trigger.
Monitoring weight gain is a crucial nursing role in antenatal care. Inadequate gain can signal intrauterine growth restriction (IUGR), while excessive or rapid gain (e.g., more than 0.5 kg/week in later months) can be a sign of pre-eclampsia.
Nurses must provide individualized counseling based on the mother's pre-pregnancy BMI, educating her on appropriate nutritional intake and weight gain goals to ensure a healthy outcome for both mother and baby.
What if? If the patient were carrying twins, the recommended weight gain for a woman with a normal BMI would increase significantly to 17-25 kg (37-54 lb).

How to Approach the Question

First, identify the core question, which asks for the standard total weight gain during pregnancy.
Recall the recommended weight gain range for a woman with a normal pre-pregnancy BMI, as this is the standard reference unless specified otherwise. The typical range is 11.5-16 kg (25-35 lbs).
Evaluate the given options against this standard range.
Note that 5 kg, 8 kg, and 10 kg are all below the lower limit of the healthy range for a normal-weight individual.
Select the option that falls comfortably within this range. 12.5 kg is the only option that fits well within the 11.5-16 kg range and is often cited as an average.

Concept Tested & Keywords

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E6 Nutrition Kumud Khanna 2e p. 80-82

E6 Physiology Guyton 4SAE Part 3 p. 61-63

E6 Obstetrics Williams p. 78-92

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