Pediatric Nutrition Practice Questions

Q: Which of the following classifications or indices does not include height?

Gomez classification. The **Gomez classification** is the correct answer because it is based solely on **Weight-for-Age**. It was the first classification used to assess protein-energy malnutrition (PEM) and calculates the percentage of expected weight for a child’s chronological age. It does not account for the child's height, which is its primary limitation as it cannot distinguish between acute wasting and chronic stunting. **Analysis of Options:** * **Gomez Classification:** Uses the formula: (Observed Weight / Weight for age of 50th percentile) × 100. Grades are: Normal (>90%), Grade I (75-90%), Grade II (60-74%), and Grade III (<60%). * **Waterlow Classification:** This system uses two indices: **Weight-for-Height** (to identify wasting/acute malnutrition) and **Height-for-Age** (to identify stunting/chronic malnutrition). * **Body Mass Index (BMI):** Calculated as **Weight (kg) / Height (m²)**. It is a standard measure for assessing thinness or obesity in older children and adults. * **Ponderal Index (Rohrer's Index):** Calculated as **Weight (kg) / Height (m³)**. It is specifically used in neonates to assess fetal growth restriction (SGA vs. IUGR) and identifies "asymmetrical" growth retardation. **High-Yield Clinical Pearls for NEET-PG:** * **IAP Classification:** Like Gomez, the Indian Academy of Pediatrics classification also uses only **Weight-for-Age**. * **Wellcome Trust Classification:** Uses Weight-for-Age AND the presence or absence of **edema** to differentiate Marasmus from Kwashiorkor. * **Stunting** (Low Height-for-Age) reflects **chronic** malnutrition; **Wasting** (Low Weight-for-Height) reflects **acute** malnutrition.

Q: A 6-year-old boy weighs 13 kg. What is the grading of his Protein-Energy Malnutrition (PEM)?

Grade II. To solve this question, we must first determine the **Expected Weight** for a 6-year-old child and then apply the **IAP (Indian Academy of Pediatrics) Classification** for PEM. ### 1. Calculation of Expected Weight For children aged 2–12 years, **Weech’s Formula** is used to calculate the expected weight: * **Formula:** (Age in years × 7 - 5) / 2 OR (Age × 2) + 8. * **Calculation:** (6 × 2) + 8 = **20 kg**. ### 2. Determining the Percentage of Expected Weight The child’s actual weight is 13 kg. * **Percentage:** (Actual Weight / Expected Weight) × 100 * (13 / 20) × 100 = **65%**. ### 3. IAP Classification Grading The IAP classifies malnutrition based on the weight-for-age percentage: * **Normal:** >80% * **Grade I:** 71–80% * **Grade II:** 61–70% (Correct Answer) * **Grade III:** 51–60% * **Grade IV:** <50% Since 65% falls within the 61–70% range, the child has **Grade II PEM**. ### Why Other Options are Incorrect: * **Grade I:** Requires a weight between 14.2–16 kg (71–80%). * **Grade III:** Requires a weight between 10.2–12 kg (51–60%). * **Grade IV:** Requires a weight <10 kg (<50%). ### High-Yield Clinical Pearls for NEET-PG: * **Gomez Classification:** Uses weight-for-age but different cut-offs (Grade I: 75-90%, II: 60-75%, III: <60%). * **Waterlow’s Classification:** Used for "Stunting" (Height-for-age) and "Wasting" (Weight-for-height). * **WHO Classification:** Uses Z-scores (Standard Deviations). Severe Malnutrition is defined as **< -3 SD**. * **Quick Formula for Weight:** At 5 months (2x Birth Weight), 1 year (3x), 2 years (4x).

Q: A child presents with a frog-like position and resistance to limb movement. What is the most probable diagnosis?

Scurvy. **Explanation:** The correct answer is **Scurvy (Vitamin C deficiency)**. The hallmark clinical presentation described is due to **subperiosteal hemorrhage**, which is exquisitely painful. To minimize pain caused by the stretching of the sensitive periosteum, the child assumes a **"frog-leg position"** (pseudoparalysis)—characterized by semi-flexion and external rotation of the hips and knees. Any attempt to move the limbs results in intense crying due to extreme tenderness. **Why other options are incorrect:** * **Rickets:** While it presents with bony deformities (bow legs, rachitic rosary) and delayed milestones, it is typically painless and does not cause pseudoparalysis or a frog-like posture. * **Trauma:** While trauma causes pain and resistance to movement, it is usually localized to a specific site and associated with an acute history of injury, rather than a generalized postural preference. * **Congenital Dislocation (DDH):** This presents with limb length discrepancy, asymmetrical skin folds, and limited abduction, but it is not typically associated with the acute, generalized pain or the specific "frog-leg" inflammatory posture seen in Scurvy. **High-Yield Clinical Pearls for NEET-PG:** * **Radiological Signs of Scurvy:** * **Frankel’s Line:** Dense zone of provisional calcification. * **Wimberger’s Ring Sign:** Circular calcification around the epiphyseal center. * **Pelkan Spur:** Marginal spurring. * **Trummerfeld Zone:** Lucent scorbutic zone (proximal to Frankel’s line). * **Clinical Triad:** Irritability, pseudoparalysis (frog-leg position), and gingival bleeding (if teeth have erupted). * **Pathophysiology:** Defective collagen synthesis leads to capillary fragility and subperiosteal bleeding.

Q: Hind milk is richer in which nutrient?

Fat. **Explanation:** Breast milk composition changes during a single feed, transitioning from **Foremilk** to **Hind milk**. **1. Why Fat is the Correct Answer:** Hind milk is the milk secreted towards the end of a breastfeeding session. It is significantly richer in **fats (lipids)** compared to foremilk. This high fat content provides increased caloric density, which is essential for satiety (feeling full) and steady weight gain in the infant. The fat content can be up to 2–3 times higher in hind milk than in foremilk. **2. Why Other Options are Incorrect:** * **Carbohydrate (Lactose):** Foremilk (the milk at the beginning of the feed) is higher in water and **lactose**. It serves primarily to quench the infant's thirst and provides quick energy. * **Protein:** The protein concentration in breast milk remains relatively stable throughout the feed and does not show the dramatic increase seen with fats in hind milk. * **Minerals:** Similar to proteins, the concentration of minerals and water-soluble vitamins is generally higher or more consistent in the foremilk to ensure hydration. **3. High-Yield Clinical Pearls for NEET-PG:** * **Foremilk vs. Hind milk:** Foremilk = Thirst-quenching (High Water/Lactose); Hind milk = Growth-promoting (High Fat/Calories). * **Colostrum:** Secreted in the first 2–3 days; rich in **IgA**, protein, and fat-soluble vitamins (A, D, E, K). It has less fat and lactose than mature milk. * **Preterm Milk:** Contains more protein, sodium, and iron compared to term milk to meet the higher demands of a premature infant. * **Exclusive Breastfeeding:** Recommended for the first 6 months of life. * **Specific Protein:** The primary protein in breast milk is **Whey** (lactalbumin), which is more easily digested than the Casein found in cow's milk.

Q: What is a disadvantage of elemental diets in children?

Dumping syndrome. **Explanation:** **Elemental diets** consist of pre-digested nutrients, primarily free amino acids, simple sugars (glucose/maltodextrin), and minimal fats. **Why Dumping Syndrome is the Correct Answer:** Elemental diets are inherently **hyperosmolar** because they contain a high concentration of small particles (monosaccharides and free amino acids). When these hyperosmolar solutions enter the small intestine rapidly—especially via bolus enteral feeding—they cause a massive osmotic shift of fluid from the intravascular space into the intestinal lumen. This leads to intestinal distension and rapid transit, manifesting as **Dumping Syndrome** (nausea, cramping, diarrhea, and vasomotor symptoms like tachycardia). **Analysis of Incorrect Options:** * **A. Hypertonic dehydration:** While elemental diets are hyperosmolar, they are usually administered with adequate free water or at controlled rates to prevent systemic dehydration. Dumping syndrome is the more direct and common gastrointestinal complication. * **B. Lower caloric input:** Elemental diets are actually designed to be calorie-dense and highly absorbable, making them effective for children with malabsorption. * **C. High nitrogen input:** These diets provide nitrogen in the form of amino acids to meet growth requirements; however, this is a therapeutic goal, not a clinical "disadvantage" or complication. **NEET-PG High-Yield Pearls:** * **Indications:** Elemental diets are used in Short Bowel Syndrome, severe Eosinophilic Esophagitis (EoE), and intractable malabsorption. * **Palatability:** A major practical disadvantage is **poor palatability** (bitter taste due to amino acids), often requiring nasogastric tube administration. * **Prevention:** To minimize dumping syndrome, elemental diets should be started at a low concentration and administered via **continuous infusion** rather than bolus feeds.

Q: Which type of milk has the minimum fat content?

Human milk. **Explanation:** The fat content in milk varies significantly across species, primarily to meet the specific metabolic and growth requirements of their offspring. Among the options provided, **Human milk** contains the lowest concentration of fat, typically ranging between **3.5 to 4.5 g/dL**. **Why Human Milk is the Correct Answer:** While human milk is rich in essential fatty acids (like DHA and ARA) and cholesterol necessary for brain development, its total lipid concentration is lower than that of common dairy animals. In human milk, fat provides about 50% of the total calories, but the absolute quantity is less than that found in cow, goat, or buffalo milk. **Analysis of Incorrect Options:** * **Cow Milk:** Contains approximately **3.5 to 4.8 g/dL** of fat. While similar to human milk, it is generally slightly higher and contains more saturated fats and less essential fatty acids. * **Goat Milk:** Contains approximately **4.0 to 5.0 g/dL** of fat. The fat globules in goat milk are smaller, making it easier to digest for some, but the total content is higher than human milk. * **Buffalo Milk:** Contains the highest fat content among the options, approximately **6.5 to 8.0 g/dL**. This high caloric density is why buffalo milk is often used for commercial cream and butter production. **High-Yield NEET-PG Pearls:** 1. **Protein Content:** Human milk has the *lowest* protein (1.1 g/dL) compared to cow milk (3.3 g/dL). This prevents solute overload on immature infant kidneys. 2. **Carbohydrate Content:** Human milk has the *highest* lactose content (7 g/dL) compared to cow milk (4.5 g/dL), which aids in calcium absorption and brain development. 3. **Iron:** Although both human and cow milk are low in iron, the **bioavailability** of iron in human milk is much higher (50-70%) compared to cow milk (5-10%). 4. **Whey:Casein Ratio:** Human milk is 60:40 (easy to digest), while cow milk is 20:80 (harder to digest).

Q: All are true about marasmus except:

Edema. **Explanation:** Protein-Energy Malnutrition (PEM) is primarily classified into two distinct clinical syndromes: **Marasmus** and **Kwashiorkor**. The key to answering this question lies in understanding that **edema is the hallmark clinical feature of Kwashiorkor, not Marasmus.** 1. **Why Edema is the Correct Answer:** Marasmus is a state of "balanced" starvation caused by a chronic deficiency of both calories and proteins. In Marasmus, the body adapts to the low intake, and hepatic protein synthesis is relatively preserved. Therefore, serum albumin levels remain near normal, maintaining oncotic pressure and preventing edema. In contrast, Kwashiorkor is characterized by hypoalbuminemia, which leads to generalized edema (pitting edema). 2. **Analysis of Other Options:** * **Normal albumin levels (Option A):** True for Marasmus. Unlike Kwashiorkor, the liver continues to produce albumin until the very late stages. * **Severe wasting of muscles (Option B):** True. In Marasmus, the body catabolizes muscle protein for energy, leading to a "skin and bones" appearance. * **Depleted subcutaneous fat (Option D):** True. The lack of caloric intake leads to the total loss of subcutaneous fat, resulting in the characteristic "Old Man/Monkey facies." **High-Yield Clinical Pearls for NEET-PG:** * **Marasmus:** "Dry" PEM, alert but irritable, prominent ribs, baggy pants appearance (due to loss of gluteal fat). * **Kwashiorkor:** "Wet" PEM, presence of edema, "Flaky paint" dermatosis, "Flag sign" in hair, and a fatty liver (hepatomegaly). * **Marasmic-Kwashiorkor:** A transition state where a child with marasmus develops edema due to acute protein deficiency or infection.

Q: Breastfed babies are protected from some gastrointestinal infections due to the presence of which component in mother's milk?

Immunoglobulin A (IgA). **Explanation:** The correct answer is **Immunoglobulin A (IgA)**, specifically **Secretory IgA (sIgA)**. This is the most abundant immunoglobulin in breast milk and colostrum. Unlike other antibodies, sIgA is resistant to proteolytic enzymes in the infant’s digestive tract. It acts by "mucosal coating"—binding to bacteria and viruses (like *E. coli*, *Vibrio cholerae*, and Rotavirus) in the gut lumen, preventing them from adhering to and penetrating the intestinal epithelium. This provides a crucial first line of defense while the infant’s own immune system is maturing. **Analysis of Incorrect Options:** * **Vitamin D:** Breast milk is notoriously **deficient** in Vitamin D. Exclusively breastfed infants require external supplementation (400 IU/day) to prevent rickets. * **Long-chain omega-3 fatty acids (DHA/ARA):** These are vital for retinal development and neurocognitive growth, but they do not provide direct immunological protection against infections. * **Immunoglobulin E (IgE):** IgE is involved in Type I hypersensitivity (allergic) reactions and defense against helminthic parasites. It is not a significant protective component of breast milk. **High-Yield Clinical Pearls for NEET-PG:** * **Bifidus Factor:** A carbohydrate in breast milk that promotes the growth of *Lactobacillus bifidus*, maintaining an acidic gut pH that inhibits pathogenic growth. * **Lactoferrin:** An iron-binding protein that inhibits siderophilic (iron-loving) bacteria like *E. coli* by depriving them of iron. * **Lysozyme:** An enzyme in milk that kills bacteria by disrupting their cell walls. * **Comparison:** Cow’s milk contains more protein (mostly casein) and minerals, but breast milk has more carbohydrates (lactose) and essential fatty acids.

Question 1

Which of the following classifications or indices does not include height?

Accepted Answer

Gomez classification

Answer

Waterlow classification

Answer

Body Mass Index

Answer

Ponderal index

Question 2

A 6-year-old boy weighs 13 kg. What is the grading of his Protein-Energy Malnutrition (PEM)?

Accepted Answer

Grade II

Answer

Grade I

Answer

Grade III

Answer

Grade IV

Question 3

A child presents with a frog-like position and resistance to limb movement. What is the most probable diagnosis?

Accepted Answer

Scurvy

Answer

Rickets

Answer

Trauma

Answer

Congenital Dislocation

Question 4

Hind milk is richer in which nutrient?

Accepted Answer

Fat

Answer

Carbohydrate

Answer

Protein

Answer

Minerals

Question 5

Lactoferrin present in human breast milk protects the child against which type of infection?

Accepted Answer

All of the above

Answer

Enterobacteriaceae infection

Answer

Amoebic infection

Answer

Viral infection

Question 6

What is a disadvantage of elemental diets in children?

Accepted Answer

Dumping syndrome

Answer

Hypertonic dehydration

Answer

Lower caloric input

Answer

High nitrogen input

Question 7

Which type of milk has the minimum fat content?

Accepted Answer

Human milk

Answer

Cow milk

Answer

Goat milk

Answer

Buffalo milk

Question 8

All are true about marasmus except:

Accepted Answer

Edema

Answer

Normal albumin levels

Answer

Severe wasting of muscles

Answer

Depleted subcutaneous fat

Question 9

What is the recommended Vitamin A supplementation for a 10-month-old child diagnosed with xerophthalmia?

Accepted Answer

Three doses of 1 lakh units

Answer

One dose of 1 lakh units

Answer

Two doses of 1 lakh units

Answer

Two doses of 2 lakh units

Question 10

Breastfed babies are protected from some gastrointestinal infections due to the presence of which component in mother's milk?

Accepted Answer

Immunoglobulin A (IgA)

Answer

Vitamin D

Answer

Long chain omega-3 fatty acids

Answer

Immunoglobulin E (IgE)

Pediatric Nutrition — MCQs

Pediatric Nutrition — MCQs

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