Pediatric Nutrition — MCQs

Pediatric Nutrition Indian Medical PG Practice Questions and MCQs

Question 301: A 2-year-old child without fever develops bone pain, vomiting, and features of increased intracranial pressure following excessive medication. Which drug is most likely responsible for these symptoms?

A. Vitamin A (Correct Answer)
B. Phenothiazine
C. Phenytoin
D. Vitamin D

Explanation: ### Explanation The clinical presentation of bone pain, vomiting, and features of increased intracranial pressure (ICP) in a child following excessive medication is characteristic of **Hypervitaminosis A (Vitamin A Toxicity).** #### Why Vitamin A is Correct Chronic ingestion of excessive Vitamin A (usually >25,000 IU/day for several months) leads to toxicity. The key features include: * **Increased Intracranial Pressure:** Vitamin A interferes with the resorption of cerebrospinal fluid, leading to **Pseudotumor cerebri** (Idiopathic Intracranial Hypertension). This manifests as vomiting, headache, and papilledema. * **Bone Involvement:** It stimulates osteoclast activity and inhibits osteoblasts, causing cortical thickening of long bones (hyperostosis), bone pain, and premature epiphyseal closure. * **Mucocutaneous signs:** Dry, scaly skin, alopecia, and cheilosis are also common. #### Why Other Options are Incorrect * **Phenothiazine:** Toxicity typically presents with extrapyramidal symptoms (dystonia, tremors) rather than bone pain or raised ICP. * **Phenytoin:** Chronic use leads to gingival hyperplasia, hirsutism, and ataxia. While it can cause osteomalacia (due to Vitamin D interference), it does not cause acute raised ICP or the specific bone pain profile seen here. * **Vitamin D:** Toxicity causes hypercalcemia, leading to polyuria, polydipsia, and nephrocalcinosis. While it causes vomiting, it does not typically present with features of Pseudotumor cerebri. #### High-Yield Clinical Pearls for NEET-PG * **Acute Vitamin A Toxicity:** Presents with bulging fontanelle in infants (due to sudden ICP rise) and vomiting. * **Chronic Vitamin A Toxicity:** Look for the triad of **Pruritus/Dry skin, Hepatomegaly, and Bony tenderness.** * **Radiology:** X-rays in chronic toxicity show subperiosteal new bone formation, especially in the mid-shaft of long bones (ulna and metatarsals). * **Differential Diagnosis:** Always differentiate from **Caffey Disease** (Infantile Cortical Hyperostosis), which presents with fever and irritability, unlike Vitamin A toxicity.

Question 302: A low weight-for-height indicates ________

A. Acute malnutrition (Correct Answer)
B. Chronic malnutrition
C. Acute on chronic malnutrition
D. Stunting

Explanation: ### Explanation In pediatric nutrition assessment, anthropometric indices are used to differentiate between different types of growth failure. **1. Why "Acute Malnutrition" is correct:** **Weight-for-height (WFH)** is the most sensitive indicator of current nutritional status. A low WFH (below -2 Standard Deviations) is termed **Wasting**. Because weight is a dynamic parameter that can be lost rapidly during periods of starvation or severe illness, it reflects **Acute Malnutrition**. It indicates that the child has a low body mass relative to their skeletal growth. **2. Why the other options are incorrect:** * **Chronic Malnutrition (B):** This is indicated by a low **Height-for-age**, also known as **Stunting**. Height is a stable parameter; a deficit indicates a long-term, cumulative nutritional deficiency or recurrent infections over months or years. * **Acute on Chronic Malnutrition (C):** This is characterized by a child who is both stunted (low height-for-age) and wasted (low weight-for-height). * **Stunting (D):** As mentioned, this refers specifically to low height-for-age, representing chronic nutritional deprivation, not low weight-for-height. **3. Clinical Pearls for NEET-PG:** * **Wasting (Low WFH):** Indicator of **Acute** malnutrition. * **Stunting (Low HFA):** Indicator of **Chronic** malnutrition. * **Underweight (Low WFA):** A composite indicator of **both** acute and chronic malnutrition (does not distinguish between the two). * **Waterlow’s Classification:** Uses WFH to grade malnutrition (Wasting) and HFA to grade Stunting. * **Gomez Classification:** Uses Weight-for-age (WFA) to grade malnutrition. * **Mid-Upper Arm Circumference (MUAC):** A rapid screening tool for acute malnutrition in children aged 6–59 months (Severe Acute Malnutrition is defined as MUAC <11.5 cm).

Question 303: Which type of milk contains the maximum amount of fat?

A. Buffalo milk (Correct Answer)
B. Goat milk
C. Human milk
D. Cow milk

Explanation: **Explanation:** The nutritional composition of milk varies significantly across species to meet the specific growth requirements of their offspring. Among the options provided, **Buffalo milk** contains the highest concentration of fat, typically ranging from **6.5% to 8%**. This high fat content contributes to its higher caloric density (approx. 100 kcal/100ml) compared to other types of milk. **Analysis of Options:** * **Buffalo milk (Correct):** It has the highest fat, total solids, and protein content. However, due to its high solute load and difficulty in digestion, it is not recommended for infants without significant dilution. * **Goat milk:** Contains approximately **4.5% fat**. While its fat globules are smaller and easier to digest than cow’s milk, it is notoriously deficient in **Folic Acid**, which can lead to megaloblastic anemia in infants fed exclusively on it. * **Human milk:** Contains about **3.5% to 4.5% fat**. While lower in total quantity than buffalo milk, human milk fat is highly bioavailable due to the presence of the enzyme **bile salt-stimulated lipase (BSSL)**. * **Cow milk:** Contains approximately **3.5% to 4% fat**. It has a higher protein content (mostly casein) compared to human milk but lower fat than buffalo milk. **High-Yield Clinical Pearls for NEET-PG:** 1. **Caloric Value:** Human and Cow milk provide ~67 kcal/100ml, while Buffalo milk provides ~100 kcal/100ml. 2. **Iron Content:** All animal milks are poor sources of Iron. 3. **Carbohydrates:** Human milk has the **highest Lactose** content (7g/dL) compared to animal milks, which facilitates calcium absorption and the growth of *Lactobacillus bifidus*. 4. **Whey:Casein Ratio:** Human milk is 60:40 (whey predominant), whereas Cow milk is 20:80 (casein predominant), making cow milk harder to digest for neonates.

Question 304: What is the daily requirement of Vitamin A for an infant?

A. 350 mcg (Correct Answer)
B. 600 mcg
C. 800 mcg
D. 1000 mcg

Explanation: **Explanation:** The daily requirement of Vitamin A for an infant (0–12 months) is **350 mcg** (Retinol). This value aligns with the latest **ICMR-NIN (2020) guidelines** for Recommended Dietary Allowances (RDA) in India. Vitamin A is a fat-soluble vitamin essential for maintaining epithelial integrity, immune function, and the visual cycle (rhodopsin synthesis). * **Why 350 mcg is correct:** For infants, the RDA is set at 350 mcg/day. This amount is typically met through breast milk in exclusively breastfed infants, provided the mother has adequate nutritional status. * **Why 600 mcg is incorrect:** This is the RDA for children aged 1–9 years and adult men/women (though requirements for pregnant women are higher). * **Why 800 mcg & 1000 mcg are incorrect:** These values exceed the daily physiological requirement for infants and are closer to the Upper Tolerable Intake Levels (UL) for older children or specific therapeutic doses. **High-Yield Clinical Pearls for NEET-PG:** 1. **Vitamin A Prophylaxis Program (India):** * **1st Dose:** 1 lakh IU (at 9 months with Measles/MR vaccine). * **2nd to 9th Dose:** 2 lakh IU every 6 months until age 5. * **Total Doses:** 9 doses (Total 17 lakh IU). 2. **Earliest Sign:** Conjunctival xerosis (though Night Blindness/Nyctalopia is the earliest *symptom*). 3. **Bitot’s Spots:** Triangular, foamy patches on the bulbar conjunctiva; a hallmark of Vitamin A deficiency. 4. **WHO Classification:** X1A (Conjunctival xerosis), X1B (Bitot’s spots), X2 (Corneal xerosis), X3A/B (Keratomalacia).

Question 305: Which of the following statements is TRUE with respect to a child with marasmus, EXCEPT?

A. The child is severely wasted and has a skin-and-bone appearance with a 'monkey facies'.
B. The child appears apathetic and inactive.
C. The child is more prone to infection and has a higher mortality compared to kwashiorkor. (Correct Answer)
D. The child's appetite is good.

Explanation: **Explanation:** The question asks for the **incorrect** statement regarding Marasmus (as indicated by the "EXCEPT" qualifier). **1. Why Option C is the Correct Answer (The False Statement):** In Protein-Energy Malnutrition (PEM), **Kwashiorkor** actually carries a **higher mortality rate** and a worse prognosis compared to Marasmus. Kwashiorkor is characterized by a "flaccid" state with severe metabolic disturbances, electrolyte imbalances, and a higher risk of life-threatening infections due to profound immune suppression. While both conditions increase infection risk, the presence of edema and systemic derangement in Kwashiorkor makes it clinically more unstable. **2. Analysis of Incorrect Options (True Statements about Marasmus):** * **Option A:** Marasmus is characterized by severe wasting of muscle and subcutaneous fat. The loss of buccal fat pads leads to the classic **'monkey facies'** or 'old man appearance'. * **Option B:** While children with Kwashiorkor are notoriously irritable and lethargic, marasmic children are often **alert**, though they may appear apathetic due to extreme energy conservation. * **Option D:** Unlike Kwashiorkor (where anorexia is common), children with Marasmus typically have a **preserved or even voracious appetite**, as their body is in a state of starvation. **High-Yield Clinical Pearls for NEET-PG:** * **Marasmus:** Caused by deficiency of total calories; "Balanced starvation." * **Kwashiorkor:** Caused by protein deficiency despite adequate calorie intake; characterized by **edema** (pitting), "Flag sign" (hair changes), and "Flaky paint dermatosis." * **Key Differentiator:** The presence of **edema** is the pathognomonic feature that distinguishes Kwashiorkor from Marasmus. * **WHO Classification:** Severe Acute Malnutrition (SAM) is defined by Weight-for-Height < -3SD, Mid-Upper Arm Circumference (MUAC) < 11.5 cm, or the presence of bilateral pitting edema.

Question 306: In Kwashiorkor, the letter K is post-fixed to denote what?

A. Weight for height
B. Skin changes
C. Edema (Correct Answer)
D. Muscle wasting

Explanation: **Explanation:** The term **Kwashiorkor** is derived from the Ga language of Ghana, meaning "the sickness the baby gets when the next baby comes." In the context of pediatric nutrition classification (specifically the **Wellcome Trust Classification**), the presence of **Edema** is the pathognomonic feature that distinguishes Kwashiorkor from Marasmus. 1. **Why Edema is correct:** The "K" in Kwashiorkor is clinically associated with **pitting edema**, which typically starts in the lower limbs and can progress to anasarca. The underlying pathophysiology involves severe protein deficiency leading to **hypoalbuminemia**, which decreases plasma oncotic pressure, causing fluid to leak into the interstitial space. 2. **Why other options are incorrect:** * **Weight for height (A):** This is a measure of "wasting." While Kwashiorkor patients have low weight for age, their weight for height may sometimes appear "normal" or less severely affected due to the false weight gain caused by fluid retention (edema). * **Skin changes (B):** While "flaky paint dermatosis" is a classic sign of Kwashiorkor, it is not the defining postfix for the classification. * **Muscle wasting (D):** This is present in Kwashiorkor but is often masked by subcutaneous fat and edema. Severe, overt muscle wasting ("baggy pants" appearance) is more characteristic of **Marasmus**. **High-Yield Clinical Pearls for NEET-PG:** * **Wellcome Trust Classification:** * Weight 60–80% + Edema = **Kwashiorkor** * Weight <60% + Edema = **Marasmic-Kwashiorkor** * Weight <60% without Edema = **Marasmus** * **Key Sign:** The "Flag sign" (alternating bands of light and dark hair) is a classic finding in Kwashiorkor due to intermittent protein intake. * **Psychological state:** Children with Kwashiorkor are typically **apathetic and irritable**, whereas Marasmic children are often alert but hungry.

Question 307: What is the hallmark electrolyte derangement of refeeding syndrome after the first week of refeeding?

A. Hyperphosphatemia
B. Hypophosphatemia (Correct Answer)
C. Hypokalemia
D. Hyperkalemia

Explanation: **Explanation:** **Refeeding Syndrome** is a life-threatening metabolic complication that occurs when nutritional support is reintroduced to severely malnourished patients (e.g., Marasmus, Kwashiorkor, or Anorexia Nervosa). **Why Hypophosphatemia is the Hallmark:** During starvation, the body shifts from carbohydrate metabolism to fat and protein catabolism, depleting intracellular phosphate stores. When refeeding begins—especially with carbohydrates—there is a sudden surge in **insulin** secretion. Insulin drives glucose, potassium, and magnesium into the cells. Crucially, it triggers the synthesis of ATP and 2,3-DPG, which consumes large amounts of inorganic phosphate. This rapid **intracellular shift** causes serum phosphate levels to plummet. **Hypophosphatemia** is the most sensitive and pathognomonic marker of this syndrome. **Analysis of Incorrect Options:** * **A. Hyperphosphatemia:** Incorrect. Phosphate levels decrease, not increase, due to rapid intracellular uptake. * **C. Hypokalemia:** While hypokalemia does occur in refeeding syndrome due to insulin-mediated shifts, it is not considered the "hallmark" or the primary diagnostic indicator compared to hypophosphatemia. * **D. Hyperkalemia:** Incorrect. Insulin causes potassium to move into the cells, leading to a decrease in serum levels. **High-Yield Clinical Pearls for NEET-PG:** * **Clinical Features:** Muscle weakness, rhabdomyolysis, respiratory failure (due to diaphragm weakness), and cardiac arrhythmias. * **Thiamine Deficiency:** Refeeding also consumes Vitamin B1 (Thiamine) as a cofactor for carbohydrate metabolism, potentially triggering Wernicke’s Encephalopathy. * **Prevention:** The gold standard management is to **"Start Low and Go Slow"** (initiate calories at 50-70% of requirements) and proactively supplement phosphorus, potassium, and magnesium.

Question 308: Growth retardation, taste alteration, hepatosplenomegaly, hypochromic microcytic anemia, loss of hair, and hypogonadism in a boy indicate deficiency of which element?

A. Selenium
B. Copper
C. Zinc (Correct Answer)
D. Iron

Explanation: ### Explanation The clinical presentation described is a classic manifestation of **Zinc deficiency**. Zinc is an essential trace element required for the function of over 300 enzymes, including those involved in DNA synthesis, cell division, and protein metabolism. **Why Zinc is the Correct Answer:** * **Growth & Development:** Zinc is crucial for the growth hormone-IGF-1 axis; deficiency leads to **growth retardation** and **hypogonadism** (delayed puberty). * **Senses & Integument:** It is vital for taste bud function (**dysgeusia/taste alteration**) and hair follicle integrity (**alopecia**). * **Hematology:** While iron is the primary cause of microcytic anemia, chronic zinc deficiency can interfere with iron metabolism and lead to **hypochromic microcytic anemia** and **hepatosplenomegaly**. * **Classic Triad:** In its severe inherited form (Acrodermatitis Enteropathica), it presents with the triad of alopecia, diarrhea, and vesiculobullous dermatitis (periorificial and acral). **Why Other Options are Incorrect:** * **Selenium:** Deficiency primarily causes **Keshan disease** (cardiomyopathy) or Kashin-Beck disease (osteoarthropathy), not growth failure or hypogonadism. * **Copper:** Deficiency leads to Menkes kinky hair syndrome, neutropenia, and skeletal abnormalities (scurvy-like), but not typically taste alteration or hypogonadism. * **Iron:** While it causes hypochromic microcytic anemia, it does not typically cause taste alteration, alopecia, or significant hypogonadism. **High-Yield Clinical Pearls for NEET-PG:** * **Acrodermatitis Enteropathica:** An autosomal recessive disorder of zinc absorption (SLC39A4 mutation). * **Zinc & Diarrhea:** Zinc supplementation (20mg/day) reduces the duration and severity of acute diarrhea in children. * **Wound Healing:** Zinc is essential for collagen synthesis; deficiency leads to poor wound healing. * **Diagnosis:** Low serum alkaline phosphatase (a zinc-dependent enzyme) can be a surrogate marker for deficiency.

Question 309: What is deficient in an exclusively breastfed baby?

A. Vitamin B12 (Correct Answer)
B. Vitamin A
C. Vitamin C
D. Proteins

Explanation: **Explanation:** Breast milk is the gold standard for infant nutrition, providing almost all essential nutrients. However, it is notoriously low in certain specific elements, most notably **Vitamin B12**, Vitamin D, and Iron. **Why Vitamin B12 is the correct answer:** While breast milk contains some Vitamin B12, the levels are highly dependent on the mother's nutritional status. In the context of competitive exams like NEET-PG, Vitamin B12 is highlighted because **exclusive breastfeeding** (especially if the mother is a strict vegetarian or vegan) puts the infant at a high risk of megaloblastic anemia and neurological developmental delays. Among the options provided, B12 is the most clinically significant deficiency found in breast milk compared to the infant's requirements. **Analysis of Incorrect Options:** * **Vitamin A:** Breast milk (especially colostrum) is a rich source of Vitamin A, which is essential for immune function and ocular health. * **Vitamin C:** Breast milk contains adequate amounts of Vitamin C (ascorbic acid) to prevent scurvy; deficiency is usually only seen if the infant is fed boiled cow's milk. * **Proteins:** Breast milk contains the ideal quantity and quality of proteins (whey-to-casein ratio), perfectly tailored for an infant's growth and renal solute load. **High-Yield Clinical Pearls for NEET-PG:** * **The "Big Three" Deficiencies:** Breast milk is deficient in **Vitamin K** (given at birth to prevent HDN), **Vitamin D** (supplementation of 400 IU/day is recommended), and **Iron** (stores deplete by 4–6 months). * **Fluoride:** Breast milk is also low in Fluoride. * **B12 Deficiency Presentation:** Look for a clinical scenario involving a strictly vegetarian mother whose infant presents with hyperpigmentation of knuckles and developmental regression.

Question 310: A 1-month-old male child presented with multiple episodes of watery diarrhea, irritability, and a body rash. Examination revealed severe muscle wasting, alopecia, and a rash on the extremities, face, and perineum. What is the likely diagnosis?

A. Acrodermatitis enteropathica (Correct Answer)
B. Zinc deficiency
C. Kwashiorkor
D. Atopic dermatitis

Explanation: ### Explanation **Correct Answer: A. Acrodermatitis enteropathica** **Acrodermatitis enteropathica (AE)** is a rare autosomal recessive disorder caused by a mutation in the **SLC39A4 gene**, which encodes a zinc transporter protein. This leads to severe intestinal malabsorption of zinc. The classic clinical triad includes: 1. **Dermatitis:** Symmetrical, vesiculobullous, or eczematous lesions typically located **periorificially** (mouth, anus) and on **acral** areas (hands, feet). 2. **Alopecia:** Loss of scalp hair, eyebrows, and lashes. 3. **Diarrhea:** Often watery and associated with irritability and failure to thrive. Symptoms typically manifest in infancy, often shortly after weaning from breast milk (as breast milk contains a ligand that aids zinc absorption, which cow's milk lacks). **Why other options are incorrect:** * **B. Zinc deficiency:** While AE is a form of zinc deficiency, "Zinc deficiency" is a broad term that includes dietary deficiency. In a 1-month-old with severe systemic symptoms and a genetic presentation, AE is the specific diagnosis. * **C. Kwashiorkor:** This is protein-energy malnutrition usually seen in older infants (1–3 years). While it features edema and "flaky paint" dermatitis, it does not typically present with the specific periorificial/acral distribution or alopecia at 1 month of age. * **D. Atopic dermatitis:** This presents with pruritic, erythematous plaques, typically on cheeks or flexures, but lacks the systemic triad of diarrhea, alopecia, and severe muscle wasting. **High-Yield NEET-PG Pearls:** * **Inheritance:** Autosomal Recessive. * **Gene:** SLC39A4 (Zinc transporter ZIP4). * **Diagnosis:** Low serum zinc levels (though clinical response to zinc is definitive). * **Treatment:** Lifelong high-dose oral zinc supplementation (elemental zinc 1–3 mg/kg/day). * **Key Distinguisher:** Look for the "periorificial and acral" distribution of the rash in exam vignettes.

Practice by Chapter

Breastfeeding

Practice Questions

Infant Formula Feeding

Practice Questions

Complementary Feeding

Practice Questions

Nutritional Requirements by Age

Practice Questions

Malnutrition and Failure to Thrive

Practice Questions

Obesity in Children

Practice Questions

Vitamin Deficiencies

Practice Questions

Mineral Deficiencies

Practice Questions

Food Allergies and Intolerances

Practice Questions

Nutritional Management of Chronic Diseases

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Eating Disorders

Practice Questions

Parenteral and Enteral Nutrition

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