Pediatric Nutrition Practice Questions

Q: In comparison to cow's milk, human milk has low contents of all except?

Iron. **Explanation:** The core concept behind this question is the comparative nutritional profile of human milk versus cow's milk. Human milk is specifically designed for the human infant's growth and physiological needs, whereas cow's milk is designed for the rapid growth of a calf. **Why Iron is the Correct Answer:** While the absolute quantity of iron in both human milk and cow’s milk is relatively low (approx. 0.5 mg/L), **human milk actually contains slightly more iron than cow's milk.** More importantly, the **bioavailability** of iron in human milk is significantly higher (50-70%) compared to cow's milk (only 10%). Therefore, human milk does not have "low content" relative to cow's milk in this comparison. **Analysis of Incorrect Options:** * **A & B (Sodium and Chloride):** Cow's milk contains significantly higher amounts of electrolytes (Sodium, Potassium, and Chloride). This high solute load can be taxing on an infant's immature kidneys, which is why unmodified cow's milk is avoided in early infancy. * **C (Protein):** Cow's milk has about 3 times the protein content (3.5g/100ml) of human milk (1.1g/100ml). Human milk protein is primarily whey-based (easier to digest), while cow's milk is primarily casein-based. **High-Yield Facts for NEET-PG:** * **Carbohydrates:** Human milk has **higher Lactose** content (7g/dl) compared to cow's milk (4g/dl), which aids in calcium absorption and brain development. * **Vitamins:** Human milk is low in Vitamin K and Vitamin D; hence, supplementation is often required. * **Protective Factors:** Human milk is rich in IgA, lactoferrin, and lysozymes, which are absent or negligible in cow's milk. * **Fat:** Human milk contains more essential fatty acids and DHA/ARA for neurodevelopment.

Q: Which of the following is NOT present in breast milk?

Avidin. **Explanation:** The correct answer is **D. Avidin**. **Why Avidin is the correct answer:** Avidin is a protein found in **raw egg whites**, not in breast milk. It is clinically significant because it binds strongly to **Biotin (Vitamin B7)**, preventing its absorption and potentially leading to biotin deficiency if large quantities of raw eggs are consumed. Breast milk contains essential nutrients and bioactive proteins, but avidin is not among them. **Analysis of Incorrect Options:** * **A. Lactoglobulins:** Specifically, **Secretory IgA** is the most important immunoglobulin in breast milk, providing mucosal immunity to the infant. While bovine milk contains beta-lactoglobulin (a common allergen), human milk contains alpha-lactalbumin. * **B. Lactoalbumin:** Human milk is rich in **alpha-lactalbumin**, which is the primary protein in the whey fraction. It assists in lactose synthesis and is easily digestible for the infant. * **C. Whey proteins:** Breast milk protein is divided into whey and casein. In early lactation, the **Whey:Casein ratio is approximately 80:20**, making it highly soluble and easy for the newborn's immature gut to process. (In contrast, cow’s milk is casein-dominant). **High-Yield Clinical Pearls for NEET-PG:** * **Protein Content:** Human milk has lower total protein (0.9–1.1 g/dL) than cow’s milk, which protects the infant's immature kidneys from a high renal solute load. * **Iron Bioavailability:** Although breast milk is low in absolute iron content, its **bioavailability is very high (50%)** compared to cow’s milk (10%). * **Deficiencies:** Breast milk is notoriously **deficient in Vitamin D and Vitamin K**. * **Inhibitors:** Breast milk contains **Lactoferrin**, which sequesters iron to prevent the growth of iron-dependent bacteria like *E. coli*.

Q: In Protein Energy Malnutrition, which of the following immunoglobulins is most reduced?

IgA. **Explanation:** In Protein-Energy Malnutrition (PEM), such as Kwashiorkor and Marasmus, the immune system is significantly compromised, a state often referred to as "nutritionally acquired immunodeficiency." **Why IgA is the correct answer:** The most characteristic immunological defect in PEM is the reduction of **Secretory IgA (sIgA)**. This occurs due to the atrophy of mucosal surfaces and lymphoid tissues (like Peyer's patches). Since IgA is the primary mediator of mucosal immunity, its deficiency leads to a breakdown of the protective barrier in the respiratory and gastrointestinal tracts. This explains why children with PEM are highly susceptible to recurrent infections like pneumonia and infectious diarrhea. **Analysis of Incorrect Options:** * **IgG and IgM:** Interestingly, serum levels of IgG, IgM, and IgD are usually **normal or even elevated** in PEM. This is because the body maintains its ability to produce these systemic antibodies in response to the frequent underlying infections common in malnourished states. * **IgE:** Serum IgE levels are often **increased** in PEM, particularly in developing regions, primarily due to the high prevalence of co-existing parasitic (helminthic) infestations. **High-Yield Clinical Pearls for NEET-PG:** * **Cell-Mediated Immunity (CMI):** This is the most severely affected component of the immune system in PEM. There is marked **thymic atrophy**, reduced T-cell counts, and a negative Mantoux test (anergy) even in the presence of TB. * **Complement System:** Levels of most complement components (except C4) are significantly reduced. * **Phagocytosis:** While the number of neutrophils is usually normal, their **bactericidal activity** (oxidative burst) is impaired.

Q: Which of the following is NOT a benefit of the higher lactose content of breast milk?

Contributes to a decreased risk of infections. **Explanation:** The lactose content in human breast milk is significantly higher (approx. 7 g/dL) than in bovine milk (approx. 4.8 g/dL). While lactose provides essential energy and metabolic benefits, it is **not directly responsible** for the decreased risk of infections. The anti-infective properties of breast milk are primarily attributed to **Secretory IgA, lactoferrin, lysozymes, and oligosaccharides**, rather than the lactose molecule itself. **Analysis of Options:** * **Option A (Incorrect):** Lactose is a disaccharide composed of glucose and **galactose**. Galactose is a critical structural component of **galactocerebrosides**, which are essential for the myelination of the developing central nervous system. * **Option B (Incorrect):** Lactose creates an acidic environment in the distal small intestine, which enhances the solubility and **passive absorption of calcium** and magnesium. * **Option D (Incorrect):** Lactose is fermented by gut flora into lactic acid. This lowers the intestinal pH, which **promotes the growth of *Lactobacillus bifidus***. This acidic environment inhibits the growth of pathogenic bacteria like *E. coli* and *Shigella*. **NEET-PG High-Yield Pearls:** * **Carbohydrate Composition:** Lactose is the primary carbohydrate in breast milk. * **Energy Value:** Breast milk provides approximately **67 kcal/100 ml** (or 20 kcal/oz). * **Protein Ratio:** Breast milk has a Whey:Casein ratio of **60:40** (easier to digest), whereas cow’s milk is 20:80. * **Iron Absorption:** Although breast milk has low iron content, its **bioavailability is high (50%)** compared to cow’s milk (10%).

Q: Epiphyseal enlargement is seen in which of the following conditions?

Rickets. **Explanation:** **Rickets (Correct Answer):** The hallmark of rickets is a failure of mineralization of the osteoid matrix at the growth plate. In response to vitamin D deficiency, there is a compensatory overgrowth of uncalcified cartilage and osteoid tissue. This leads to the expansion of the growth plate, which clinically and radiologically manifests as **epiphyseal enlargement** (widening). This is most visible at the wrists and ankles and is the underlying cause of "rachitic rosary" at the costochondral junctions. **Incorrect Options:** * **Scurvy:** Characterized by a defect in collagen synthesis. Radiologically, it shows **epiphyseal atrophy** (Wimberger’s ring sign) rather than enlargement. Other features include the White line of Frankel and Trummerfeld zone. * **Spondylo-epiphyseal dysgenesis:** This is a genetic disorder characterized by **malformed or small epiphyses** (epiphyseal dysplasia) and vertebral anomalies, leading to short-trunk dwarfism. * **Juvenile Rheumatoid Arthritis (JRA):** While chronic inflammation can cause accelerated bone age or joint swelling, it does not typically cause the classic "epiphyseal enlargement" seen in metabolic bone diseases like rickets. **NEET-PG High-Yield Pearls:** * **Earliest radiological sign of Rickets:** Fraying and cupping of the distal ends of the radius and ulna. * **Wimberger Sign:** In Scurvy, it refers to a thin sclerotic margin surrounding a lucent center in the epiphysis. In Congenital Syphilis, it refers to erosion of the medial proximal tibia. * **Metaphyseal blanching:** A sign of healing rickets.

Q: Which of the following should be given first in a severely malnourished child?

Dextrose. In the management of a child with Severe Acute Malnutrition (SAM), the immediate priority is to address life-threatening emergencies. **Hypoglycemia** is a silent killer in these children, often presenting without classic symptoms like sweating or tremors due to a blunted autonomic response. ### **Why Dextrose is the Correct Answer** According to the WHO protocol for SAM, the very first step in the "Stabilization Phase" is to **prevent or treat hypoglycemia**. Even if the child is asymptomatic, they should be treated as if they are hypoglycemic. Immediate administration of **10% Dextrose** (either orally/nasogastrically or IV if the child is lethargic) is the priority to prevent brain injury and death. ### **Why Other Options are Incorrect** * **A. ReSoMal:** While dehydration is a priority, it is addressed in Step 2. ReSoMal (Rehydration Solution for Malnutrition) is given only after ensuring the child is not in hypoglycemic shock. * **C. 10% Albumin:** Albumin is generally avoided in SAM. Edema in Kwashiorkor is due to various factors, and giving IV albumin can lead to fluid overload and heart failure. * **D. Vitamin A:** While Vitamin A supplementation is a crucial part of the protocol (Step 4), it is not the immediate "first" action compared to restoring blood glucose levels. ### **Clinical Pearls for NEET-PG** * **The 10 Steps:** Management follows a 2-phase approach: **Stabilization** (Days 1–7) and **Rehabilitation** (Weeks 2–6). * **Hypoglycemia Cut-off:** In SAM, hypoglycemia is defined as blood glucose **<54 mg/dL** (3 mmol/L). * **Feeding:** Start with **F-75** diet (75 kcal/100ml) during stabilization to avoid **Refeeding Syndrome**, which is characterized by hypophosphatemia, hypokalemia, and hypomagnesemia. * **Iron:** Never give iron in the stabilization phase; it can promote bacterial growth and oxidative stress. Introduce it only in the rehabilitation phase.

Q: In severe acute malnutrition, what is the defined blood glucose level for hypoglycemia?

Blood glucose level < 54 mg/dl. **Explanation:** In children with **Severe Acute Malnutrition (SAM)**, the threshold for defining hypoglycemia is higher than in healthy children. According to the **WHO guidelines** and the **IAP (Indian Academy of Pediatrics)**, hypoglycemia in a child with SAM is defined as a blood glucose level **< 54 mg/dl (3.0 mmol/L)**. **Why the correct answer is right:** Children with SAM have significantly depleted glycogen stores, reduced muscle mass (limiting gluconeogenesis precursors), and impaired liver function. Because their physiological reserves are so low, they are highly susceptible to rapid clinical deterioration. A higher threshold (54 mg/dl) is used to ensure early intervention, as these children may not manifest the classic adrenergic signs of hypoglycemia (like sweating or tachycardia) due to a blunted metabolic response. **Why the incorrect options are wrong:** * **Options A & B (< 40 or 45 mg/dl):** These are common thresholds used for defining hypoglycemia in healthy neonates or older children, but they are dangerously low for a child with SAM. * **Option C (< 50 mg/dl):** While closer to the target, it does not align with the specific WHO/IAP standardized protocol for SAM management. **High-Yield Clinical Pearls for NEET-PG:** * **Management:** If the child is conscious, give 50 ml of 10% glucose or sucrose bolus orally/nasogastrically. If unconscious, give 5 ml/kg of **10% Dextrose IV**. * **Feeding:** To prevent recurrence, feed the child every **2 hours** (day and night). * **Associated Sign:** Hypoglycemia in SAM often co-exists with **hypothermia** (axillary temp < 35°C) and **infection/sepsis**; this triad is often fatal.

Q: What is the sodium content of ReSoMal?

45 mmol/L. **Explanation:** **ReSoMal (Rehydration Solution for Malnutrition)** is a modified oral rehydration solution specifically designed for children suffering from **Severe Acute Malnutrition (SAM)** and dehydration. The correct answer is **45 mmol/L**. The underlying medical concept is that children with SAM have a unique electrolyte imbalance: they typically have an **excess of total body sodium** (despite low serum levels due to the "sodium pump" failure) and a severe **deficiency of potassium and magnesium**. Standard WHO-ORS (90 or 75 mmol/L) contains too much sodium for these children, which can lead to fluid overload and heart failure. Therefore, ReSoMal is formulated with **lower sodium** and **higher potassium**. **Analysis of Options:** * **A. 90 mmol/L:** This was the sodium concentration of the "Old" WHO-ORS (High osmolarity). It is contraindicated in SAM due to the risk of hypernatremia and heart failure. * **B. 60 mmol/L:** This is not a standard concentration for WHO rehydration fluids. * **C. 45 mmol/L (Correct):** This is the specific sodium concentration in ReSoMal, providing a safer balance for the fragile hemodynamics of a malnourished child. * **D. 30 mmol/L:** This is too low to effectively correct dehydration even in SAM patients. **High-Yield Clinical Pearls for NEET-PG:** * **Composition of ReSoMal:** Sodium (45 mmol/L), Potassium (40 mmol/L), Magnesium (3 mmol/L), and Glucose (125 mmol/L). * **Standard Reduced Osmolarity ORS:** Contains **75 mmol/L** of sodium (used for non-malnourished children with diarrhea). * **Key Rule:** ReSoMal should **not** be used in children suspected of having Cholera or those with severe watery diarrhea (even if malnourished), as its sodium content is too low to replace the massive losses seen in these conditions.

Q: What is the daily requirement of Vitamin D in children?

1 microgram. The daily requirement of Vitamin D in children is a high-yield topic for NEET-PG, often focusing on the conversion between micrograms (mcg) and International Units (IU). ### **Explanation of the Correct Answer** The correct answer is **10 micrograms (mcg)**, which corresponds to **400 IU** per day. However, in the context of this specific question and standard textbook values (like Ghai Pediatrics), the physiological requirement is often cited as **10 mcg**. *Note: 1 mcg of Vitamin D = 40 IU.* Therefore, 10 mcg = 400 IU. *(Self-Correction/Note: If the option provided is "1 microgram," it is likely a typographical error in the source question, as the standard requirement is 10 mcg (400 IU). In competitive exams, always look for the value that aligns with 400 IU).* ### **Analysis of Incorrect Options** * **B. 2.5 microgram:** This equals 100 IU, which is insufficient to prevent rickets in growing children. * **C. 10 IU:** This is a negligible amount. The requirement is 400 **IU**, not 10 IU. * **D. 50-100 microgram:** This equals 2000–4000 IU. This range is considered the "Upper Tolerable Limit" or used for pharmacological treatment of deficiency, not the routine daily requirement. ### **NEET-PG High-Yield Pearls** 1. **Standard Recommendation:** All infants (breastfed or formula-fed) should receive **400 IU (10 mcg)** of Vitamin D daily starting shortly after birth. 2. **Adolescents:** The requirement remains **400–600 IU** daily. 3. **Rickets Prevention:** Vitamin D supplementation is crucial because human breast milk is notoriously low in Vitamin D (containing only 12–60 IU/L). 4. **Conversion Factor:** Always remember **1 mcg = 40 IU**. This is the most common trap in pediatric nutrition questions. 5. **Treatment Dose:** For nutritional rickets, the dose is much higher (2000–6000 IU/day or a single "Stoss" dose of 3–6 lakh IU).

Question 1

In comparison to cow's milk, human milk has low contents of all except?

Accepted Answer

Iron

Answer

Sodium

Answer

Chloride

Answer

Protein

Question 2

Which of the following is NOT present in breast milk?

Accepted Answer

Avidin

Answer

Lactoglobulins

Answer

Lactoalbumin

Answer

Whey proteins

Question 3

In Protein Energy Malnutrition, which of the following immunoglobulins is most reduced?

Accepted Answer

IgA

Answer

IgG

Answer

IgM

Answer

IgE

Question 4

Which of the following is NOT a benefit of the higher lactose content of breast milk?

Accepted Answer

Contributes to a decreased risk of infections

Answer

Aids in the formation of galactocerebrosides

Answer

Assists in the absorption of calcium

Answer

Promotes the growth of lactobacilli

Question 5

Epiphyseal enlargement is seen in which of the following conditions?

Accepted Answer

Rickets

Answer

Scurvy

Answer

Spondylo-epiphyseal dysgenesis

Answer

Juvenile rheumatoid arthritis

Question 6

Which of the following should be given first in a severely malnourished child?

Accepted Answer

Dextrose

Answer

RESOMAL

Answer

10% albumin

Answer

Vitamin A

Question 7

Breastfeeding is contraindicated if the mother is taking which of the following medications?

Accepted Answer

Phenobarbital

Answer

Propranolol

Answer

Diuretics

Answer

Morphine

Question 8

In severe acute malnutrition, what is the defined blood glucose level for hypoglycemia?

Accepted Answer

Blood glucose level < 54 mg/dl

Answer

Blood glucose level < 40 mg/dl

Answer

Blood glucose level < 45 mg/dl

Answer

Blood glucose level < 50 mg/dl

Question 9

What is the sodium content of ReSoMal?

Accepted Answer

45 mmol/L

Answer

90 mmol/L

Answer

60 mmol/L

Answer

30 mmol/L

Question 10

What is the daily requirement of Vitamin D in children?

Accepted Answer

1 microgram

Answer

2.5 microgram

Answer

10 IU

Answer

50-100 microgram

Pediatric Nutrition — MCQs

Pediatric Nutrition — MCQs

On this page

Practice by Chapter

Want unlimited practice?