Nutrition in Pregnancy and Lactation — MCQs
Compared to a pregnant female, a lactating female would require a higher level of nutrient supplementation for which of the following?
Late metabolic acidosis is seen in-
What is the energy requirement in late pregnancy?
What is the recommended therapeutic supplementation of iron and folic acid for adults with deficiency?
A 7 weeks pregnant lady has 1 accidental exposure to x-ray. Which of the following should be done?
What characterizes a term small for date baby?
What is the RDA of iodine in lactation in micrograms?
As per the Government of India guidelines, the daily dose of elemental iron recommended for prophylaxis during pregnancy is
Lowering of which of the following parameters indicates acute malnutrition?
In Niacin deficiency, all of the following are seen except?
Nutrition in Pregnancy and Lactation Indian Medical PG Practice Questions and MCQs
Question 1: Compared to a pregnant female, a lactating female would require a higher level of nutrient supplementation for which of the following?
- A. Calcium (Correct Answer)
- B. Folic acid
- C. Iron
- D. Vitamin A
Explanation: ***Calcium*** - **Lactating women** require higher calcium intake compared to pregnant women due to significant calcium transfer into **breast milk** for infant bone development. - This increased demand helps maintain maternal bone density and ensures adequate calcium supply for the baby. *Folic acid* - **Folic acid** is critically important during **pregnancy** to prevent neural tube defects, with supplementation typically decreasing postpartum. - While still necessary, the daily recommended intake for lactating women is generally lower than during pregnancy. *Iron* - **Iron requirements** are highest during **pregnancy** to support increased maternal blood volume and fetal development. - In lactating women, iron needs often decrease postpartum, especially if there was minimal blood loss during delivery and menstruation has not yet resumed. *Vitamin A* - While **Vitamin A** is important for both pregnant and lactating women, the recommended intake for pregnant women tends to be slightly higher, especially for **fetal organ development**. - Excessive vitamin A can be teratogenic during pregnancy, so supplementation needs careful monitoring in both states.
Question 2: Late metabolic acidosis is seen in-
- A. Term infant given formula feed
- B. Preterm baby getting cow milk (Correct Answer)
- C. Long term breast feeding
- D. None of the options
Explanation: ***Preterm baby getting cow milk*** - **Preterm infants** have immature kidneys with reduced ability to excrete **acidic metabolites**. - **Cow milk-based formulas** have a higher protein and mineral content, leading to a greater **acid load** which can exacerbate the metabolic acidosis in preterm infants. *Term infant given formula feed* - Term infants generally have more mature renal function capable of handling the **acid load** from formula feeding. - While formula feeding can contribute to a higher renal solute load than breast milk, it rarely results in **late metabolic acidosis** in otherwise healthy term infants. *Long term breast feeding* - **Breast milk** has a lower protein content and a more balanced mineral composition, resulting in a significantly lower **renal solute load** and acid load compared to formula. - It is protective against metabolic acidosis and is the preferred feeding method for infants. *None of the options* - This option is incorrect because **preterm infants fed cow milk-based formula** are indeed at risk for late metabolic acidosis due to their immature kidneys and the higher acid load from the formula.
Question 3: What is the energy requirement in late pregnancy?
- A. 2000 calories
- B. 2500 calories (Correct Answer)
- C. 1400 calories
- D. 3000 calories
Explanation: ***2500 calories*** - The energy requirement for women in late pregnancy (third trimester) is approximately **2300-2500 calories per day**, which includes an additional **300-450 calories** above pre-pregnancy needs. - This increased energy intake supports **fetal growth and development**, increased maternal blood volume, uterine growth, and the metabolic demands of pregnancy. - The **2500 calorie** recommendation represents the upper range suitable for most pregnant women with normal activity levels. *2000 calories* - This amount is closer to the **pre-pregnancy energy requirement** for an average woman, but is **insufficient** for late pregnancy. - During the third trimester, failing to meet increased caloric needs can compromise **fetal growth** and lead to **inadequate gestational weight gain**. *1400 calories* - This amount is **severely insufficient** for the increased metabolic demands of late pregnancy. - An inadequate calorie intake can compromise **fetal growth**, lead to **intrauterine growth restriction (IUGR)**, and cause **maternal nutrient deficiencies**. *3000 calories* - This caloric intake is generally **too high** for the average pregnant woman with normal activity levels. - Excessive intake is only justified in cases of **multiple gestation**, unusually high physical activity, or specific medical conditions. - Consuming 3000 calories per day without proper justification can lead to **excessive gestational weight gain**, gestational diabetes, and macrosomia.
Question 4: What is the recommended therapeutic supplementation of iron and folic acid for adults with deficiency?
- A. 20 mg iron, 500 mcg folic acid
- B. 40 mg iron, 250 mcg folic acid
- C. 100 mg iron, 500 mcg folic acid (Correct Answer)
- D. 100 mg iron, 100 mcg folic acid
Explanation: ***100 mg iron, 500 mcg folic acid*** - For adults with **iron deficiency anemia**, the therapeutic dose of elemental iron is typically **100-200 mg daily**, commonly given as ferrous sulfate 325 mg (containing ~65 mg elemental iron) 2-3 times daily. **100 mg is an appropriate therapeutic dose**. - For **folic acid deficiency**, the standard therapeutic dose is **1-5 mg (1000-5000 mcg) daily** for treating established deficiency. However, **500 mcg (0.5 mg)** represents a minimal therapeutic/high prophylactic dose that may be used in milder deficiencies or as initial supplementation. Among the given options, this is the most appropriate combination. *20 mg iron, 500 mcg folic acid* - **20 mg of iron** is grossly insufficient for therapeutic supplementation in iron deficiency anemia and would fail to correct the anemia adequately. - While 500 mcg folic acid has some therapeutic value, the **iron dose is far too low** for treatment. *40 mg iron, 250 mcg folic acid* - **40 mg of iron** is a prophylactic dose (used in pregnancy or prevention) but is **insufficient for therapeutic correction** of established iron deficiency anemia. - **250 mcg of folic acid** is also a prophylactic dose and inadequate for treating established deficiency. *100 mg iron, 100 mcg folic acid* - **100 mg of iron** is an appropriate therapeutic dose for treating **iron deficiency anemia**. - However, **100 mcg of folic acid** is purely a maintenance/prophylactic dose found in multivitamins and is **grossly insufficient** for treating established folic acid deficiency.
Question 5: A 7 weeks pregnant lady has 1 accidental exposure to x-ray. Which of the following should be done?
- A. Continue the pregnancy with monitoring (Correct Answer)
- B. Perform chromosome analysis if needed
- C. Conduct pre-invasive diagnostic testing if indicated
- D. Consider termination of pregnancy
Explanation: ***Continue the pregnancy with monitoring*** - The risk of **fetal malformation** and **intellectual disability** from a single diagnostic X-ray exposure is generally considered very low, often below the threshold for clinical concern. - Current guidelines typically recommend continuing pregnancy with routine monitoring unless the estimated fetal dose exceeds a certain threshold (e.g., 50-100 mGy), which is unlikely with a single accidental exposure. *Perform chromosome analysis if needed* - **Chromosome analysis** is generally reserved for cases with suspected genetic anomalies or significant fetal exposure to radiation at doses known to induce chromosomal damage. - A single, accidental X-ray exposure is unlikely to cause clinically significant chromosomal aberrations requiring such invasive testing. *Conduct pre-invasive diagnostic testing if indicated* - **Pre-invasive diagnostic testing**, such as nuchal translucency scans or maternal serum screening, assesses risks for common aneuploidies and neural tube defects, not typically direct radiation effects. - While these tests are part of routine prenatal care, a single X-ray exposure does not, by itself, create a specific indication for additional pre-invasive testing beyond standard recommendations. *Consider termination of pregnancy* - **Termination of pregnancy** is usually considered only in cases of significant, confirmed fetal harm or very high radiation doses that unequivocally increase the risk of severe birth defects or intellectual disability. - A single accidental X-ray exposure almost certainly does not meet this threshold, as the associated risks to the fetus are minimal.
Question 6: What characterizes a term small for date baby?
- A. Absence of nipple nodule
- B. Absence of palmar/plantar creases
- C. Presence of hyperbilirubinemia
- D. Weight less than the 10th percentile (Correct Answer)
Explanation: ***Weight less than the 10th percentile*** - A small for date (SFD) baby is primarily defined by a **birth weight below the 10th percentile** for gestational age, reflecting intrauterine growth restriction. - This definition focuses on the infant's size **relative to expected growth norms**, rather than specific developmental features. *Absence of nipple nodule* - The absence of a **nipple nodule** is characteristic of a **premature neonate**, not specifically a small for date baby. - While SFD babies can be premature, this finding indicates immaturity rather than poor growth for their gestational age. *Absence of palmar/plantar creases* - The lack of prominent **palmar and plantar creases** is another sign of **prematurity**, as these creases develop progressively with increasing gestational age. - This feature helps assess neurological maturity but doesn't define low birth weight for gestational age. *Presence of hyperbilirubinemia* - **Hyperbilirubinemia** (jaundice) is a common finding in **neonates** of various gestational ages and weights, due to immature liver function. - It is not a defining characteristic of a small for date baby; rather, it indicates a physiological or pathological process independent of growth restriction.
Question 7: What is the RDA of iodine in lactation in micrograms?
- A. 150
- B. 220
- C. 100
- D. 250 (Correct Answer)
Explanation: ***250*** - The **Recommended Dietary Allowance (RDA)** for **iodine** in lactating women is 250 mcg/day. - This higher requirement during lactation supports adequate **iodine transfer to breast milk** for infant thyroid hormone synthesis and neurological development. *150* - This is the RDA for **iodine in adults** who are not pregnant or lactating. - It would be **insufficient** to meet the increased demands of lactation and ensure adequate infant iodine supply. *220* - This is the RDA for **iodine during pregnancy**, reflecting the increased maternal and fetal thyroid hormone needs. - However, the requirement is even **higher during lactation** due to iodine excretion into breast milk. *100* - This amount is **below the RDA** for any adult population, including those who are not pregnant or lactating. - Consuming only 100 mcg/day during lactation would lead to an **iodine deficiency**, affecting both mother and infant.
Question 8: As per the Government of India guidelines, the daily dose of elemental iron recommended for prophylaxis during pregnancy is
- A. 150 mg/day for 100 days
- B. 200 mg/day for 100 days
- C. 100 mg/day for 100 days (Correct Answer)
- D. 50 mg/day for 100 days
Explanation: ***100 mg/day for 100 days*** - As per the **Government of India guidelines**, the recommended daily dose of **elemental iron** for prophylaxis during pregnancy is 100 mg/day. - This dose is typically continued for at least **100 days** to ensure adequate iron stores and prevent iron deficiency anemia. *150 mg/day for 100 days* - This dose exceeds the **recommended daily prophylactic** amount of elemental iron specified by Indian government guidelines. - While higher doses may be used for **therapeutic treatment** of existing iron deficiency anemia, it is not the standard for prophylaxis. *200 mg/day for 100 days* - This amount is significantly higher than the standard **prophylactic recommendation** for elemental iron during pregnancy in India. - Such a high dose would typically only be prescribed for **treating severe anemia**, not for routine prevention. *50 mg/day for 100 days* - This dose is lower than the **recommended daily amount** for effective iron prophylaxis according to the Government of India guidelines. - Such a dose might be **insufficient** to maintain adequate iron levels and prevent anemia during pregnancy.
Question 9: Lowering of which of the following parameters indicates acute malnutrition?
- A. Weight for age
- B. Weight for height (Correct Answer)
- C. Height for age
- D. Body Mass Index (BMI)
Explanation: **Explanation:** In pediatric nutritional assessment, different anthropometric indices reflect different durations and types of nutritional stress. **1. Why "Weight for Height" is correct:** **Weight for height** is the primary indicator of **acute malnutrition** (also known as **Wasting**). Weight is a sensitive parameter that fluctuates rapidly in response to recent nutritional deficiencies or acute illnesses (like diarrhea or respiratory infections). When a child’s weight is low relative to their height, it signifies a recent and severe process of weight loss, indicating an acute nutritional emergency. **2. Analysis of Incorrect Options:** * **Weight for Age (Underweight):** This is a composite indicator that reflects both acute and chronic malnutrition. It does not distinguish between a child who is short (stunted) and a child who is thin (wasted). * **Height for Age (Stunting):** This indicates **chronic malnutrition**. Linear growth retardation occurs over a long period due to persistent nutritional deprivation or recurrent infections. It represents "past" or long-term nutritional status. * **Body Mass Index (BMI):** While used in adults and older children, in the context of standard WHO pediatric growth monitoring for acute malnutrition, "Weight for Height" is the specific gold-standard parameter used to define wasting. **Clinical Pearls for NEET-PG:** * **Wasting (Acute):** Weight for Height < -2 SD. * **Stunting (Chronic):** Height for Age < -2 SD. * **Underweight (Composite):** Weight for Age < -2 SD. * **Mid-Upper Arm Circumference (MUAC):** A MUAC < 11.5 cm is a quick screening tool for Severe Acute Malnutrition (SAM) in children aged 6–59 months. * **Gomez Classification:** Based on Weight for Age. * **Waterlow’s Classification:** Uses Weight for Height (Wasting) and Height for Age (Stunting).
Question 10: In Niacin deficiency, all of the following are seen except?
- A. Deafness (Correct Answer)
- B. Diarrhea
- C. Dementia
- D. Dermatitis
Explanation: ### Explanation Niacin (Vitamin B3) deficiency leads to a clinical condition known as **Pellagra**. This condition is classically characterized by the **"3 Ds"**: Dermatitis, Diarrhea, and Dementia. If left untreated, it progresses to a 4th D: Death. **Deafness** is not a feature of Niacin deficiency, making it the correct answer for this "except" question. #### Analysis of Options: * **Dermatitis (Option D):** This is typically the most characteristic sign. It presents as a symmetrical, photosensitive rash. A well-known clinical sign is **Casal’s necklace**, where the dermatitis forms a ring-like pattern around the neck. * **Diarrhea (Option B):** Gastrointestinal involvement is common due to inflammation of the mucosal lining, leading to chronic diarrhea, glossitis (magenta tongue), and stomatitis. * **Dementia (Option C):** Neurological manifestations include irritability, poor concentration, and depression, which can progress to full-blown dementia, tremors, and eventually coma. * **Deafness (Option A):** Hearing loss is not associated with Niacin deficiency. It is more commonly linked to congenital infections (TORCH), certain drugs (ototoxicity), or deficiencies like Iodine (endemic cretinism). #### NEET-PG High-Yield Pearls: * **Precursor:** Niacin is synthesized from the amino acid **Tryptophan** (60 mg Tryptophan = 1 mg Niacin). * **Dietary Links:** Pellagra is historically associated with **Maize (Corn)** or **Jowar (Sorghum)** based diets. Maize is deficient in Tryptophan and contains Niacin in a bound, unabsorbable form (Niacytin). Jowar contains high levels of **Leucine**, which interferes with Tryptophan metabolism. * **Hartnup Disease:** A genetic disorder affecting Tryptophan absorption that can present with Pellagra-like symptoms. * **Carcinoid Syndrome:** Can lead to Niacin deficiency because Tryptophan is diverted to produce excessive Serotonin.
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