Pediatric Nutrition — MCQs

Pediatric Nutrition Indian Medical PG Practice Questions and MCQs

Question 81: All of the following conditions are observed in Marasmus, except?

A. Hepatomegaly (Correct Answer)
B. Muscle wasting
C. Low insulin levels
D. Extreme weakness

Explanation: **Explanation:** The core distinction between the two types of Protein-Energy Malnutrition (PEM) lies in the presence or absence of edema and fatty liver. **Hepatomegaly** is a hallmark feature of **Kwashiorkor**, not Marasmus. In Kwashiorkor, protein deficiency leads to a lack of apolipoproteins, which are essential for transporting lipids out of the liver. This results in fatty infiltration (steatosis) and subsequent liver enlargement. In Marasmus, there is a global deficiency of both calories and protein, but the liver typically remains normal in size because there is no significant accumulation of fat. **Analysis of Options:** * **Muscle wasting (Option B):** This is a cardinal feature of Marasmus. Due to severe calorie deprivation, the body catabolizes muscle protein for energy, leading to the classic "skin and bones" appearance. * **Low insulin levels (Option C):** In Marasmus, the body enters a state of adaptation to starvation. Blood glucose levels are low, which suppresses insulin secretion and increases growth hormone and cortisol levels to facilitate mobilization of energy stores. * **Extreme weakness (Option D):** Due to the loss of muscle mass and subcutaneous fat, along with electrolyte imbalances and chronic energy deficiency, these children exhibit profound lethargy and weakness. **High-Yield Clinical Pearls for NEET-PG:** * **Marasmus:** "Balanced starvation," occurs in infants <1 year, characterized by an "Old Man/Monkey facies" and loss of buccal pad of fat. * **Kwashiorkor:** "Protein deficiency," occurs in children 1–5 years, characterized by "Moon facies," "Flaky paint dermatosis," and "Flag sign" (banded hair discoloration). * **Key differentiator:** Edema is the mandatory clinical finding for a diagnosis of Kwashiorkor; its absence defines Marasmus.

Question 82: All of the following reduce lactation except:

A. Maternal anxiety
B. Retracted nipple
C. Antibiotics (Correct Answer)
D. Diabetes

Explanation: ### Explanation The success of lactation depends on the **milk ejection reflex (let-down reflex)** and the physical ability of the infant to latch. **1. Why Antibiotics is the Correct Answer:** Most standard antibiotics (e.g., Penicillins, Cephalosporins, Erythromycin) do **not** reduce milk production. While some drugs may be contraindicated due to secretion into breast milk (e.g., Chloramphenicol, Tetracyclines), they do not interfere with the physiological process of lactation itself. In fact, antibiotics are often necessary to treat mastitis to *ensure* continued breastfeeding. **2. Why the Other Options are Incorrect:** * **Maternal Anxiety (A):** The milk ejection reflex is mediated by **Oxytocin**. Stress, pain, and anxiety lead to increased adrenaline, which causes vasoconstriction and inhibits oxytocin release, thereby reducing milk flow. * **Retracted Nipple (B):** This is a mechanical barrier. A retracted or flat nipple makes it difficult for the infant to achieve a good "latch." Poor attachment leads to inadequate nipple stimulation and incomplete emptying of the breast, which triggers a feedback inhibition of lactation (FIL) and decreases prolactin production. * **Diabetes (D):** Poorly controlled maternal diabetes (especially Type 1) is associated with **delayed lactogenesis II** (the onset of copious milk secretion). Insulin plays a synergistic role with prolactin in stimulating mammary epithelial cell differentiation. ### NEET-PG High-Yield Pearls: * **Prolactin:** Responsible for milk **production** (secreted by anterior pituitary). * **Oxytocin:** Responsible for milk **ejection** (secreted by posterior pituitary). * **Galactogogues:** Drugs that *increase* lactation (e.g., Metoclopramide, Domperidone) by inhibiting dopamine. * **Drugs that reduce lactation:** Combined Oral Contraceptive Pills (Estrogen), Bromocriptine, Ergotamine, and Levodopa.

Question 83: What is an absolute contraindication for Bag & Mask ventilation?

A. Tracheoesophageal fistula
B. Congenital diaphragmatic hernia (Correct Answer)
C. Choanal atresia
D. Cleft palate

Explanation: **Explanation:** The correct answer is **Congenital Diaphragmatic Hernia (CDH)**. **Why CDH is the Correct Answer:** In CDH, abdominal viscera (stomach, intestines) herniate into the thoracic cavity through a defect in the diaphragm (most commonly the left-sided Bochdalek hernia). **Bag and Mask Ventilation (BMV)** is strictly contraindicated because it forces air into the stomach and intestines. This causes bowel distension within the chest, which further compresses the already hypoplastic lungs and shifts the mediastinum, leading to severe respiratory compromise and potential pneumothorax. The management of choice for a neonate with CDH and respiratory distress is **immediate endotracheal intubation** and gastric decompression with an orogastric tube. **Analysis of Incorrect Options:** * **Tracheoesophageal fistula (TEF):** While BMV can distend the stomach via the fistula, it is not an absolute contraindication in the immediate resuscitation phase, though it should be used cautiously. * **Choanal atresia:** This is an upper airway obstruction. While BMV may be difficult, it is not contraindicated; in fact, an oral airway or a "McGovern nipple" is often used to facilitate breathing. * **Cleft palate:** This does not contraindicate BMV, though achieving an adequate seal with the mask may be technically challenging. **High-Yield Clinical Pearls for NEET-PG:** * **Classic Triad of CDH:** Cyanosis, Dyspnea, and Scaphoid abdomen. * **Radiology:** "Soap bubble" appearance in the hemithorax with a mediastinal shift. * **Management Priority:** Intubate → Ventilate (gentle ventilation/permissive hypercapnia) → Decompress (NG/OG tube) → Stabilize → Surgical repair (delayed). * **Avoid:** High-pressure ventilation to prevent barotrauma to the contralateral lung.

Question 84: Which of the following is NOT present in breast milk?

A. Lactoglobulins
B. Lactoalbumin
C. Whey proteins
D. Avidin (Correct Answer)

Explanation: **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*.

Question 85: What is the recommended daily energy requirement in a 15 kg child?

A. 1500 KCal
B. 1000 KCal
C. 1250 KCal (Correct Answer)
D. 1400 KCal

Explanation: ### Explanation The daily energy requirement in children is most commonly calculated using the **Holliday-Segar Formula**. This method estimates the Basal Metabolic Rate (BMR) plus average physical activity based on body weight. **The Calculation Breakdown:** * **First 10 kg:** 100 kcal/kg/day (10 × 100 = 1000 kcal) * **Next 10 kg (11–20 kg):** 50 kcal/kg/day * **Each kg above 20 kg:** 20 kcal/kg/day For a **15 kg child**: 1. First 10 kg = 1000 kcal 2. Remaining 5 kg = 5 × 50 kcal = 250 kcal 3. **Total = 1000 + 250 = 1250 kcal/day.** --- ### Analysis of Options: * **Option A (1500 kcal):** This would be the requirement for a 20 kg child (1000 + 500). * **Option B (1000 kcal):** This is the requirement for a 10 kg child. It ignores the additional 5 kg of weight. * **Option D (1400 kcal):** This value does not align with the standard Holliday-Segar increments for a 15 kg child. --- ### High-Yield Clinical Pearls for NEET-PG: * **Fluid Requirements:** The Holliday-Segar formula is also used to calculate **maintenance fluid requirements** (100 ml/kg for the first 10 kg, 50 ml/kg for the next 10 kg, and 20 ml/kg thereafter). For a 15 kg child, the maintenance fluid is **1250 ml/day**. * **Infant Energy Needs:** Energy requirements are highest in infancy (approx. 100–120 kcal/kg/day) and gradually decrease with age. * **Catch-up Growth:** In children with Severe Acute Malnutrition (SAM), energy requirements during the rehabilitation phase can go as high as **150–220 kcal/kg/day**.

Question 86: The vitamin A supplement administered in the Prevention of Nutritional Blindness in Children Programme contains which of the following?

A. 25,000 IU/ml
B. 1 Lakh IU/ml (Correct Answer)
C. 3 Lakh IU/ml
D. 5 Lakh IU/ml

Explanation: The **National Vitamin A Prophylaxis Programme** (part of the Prevention of Nutritional Blindness in Children) utilizes a specific concentration of Vitamin A syrup to facilitate mass administration and accurate dosing. ### **Explanation of the Correct Answer** The standard Vitamin A solution used in the government program is **1 Lakh (100,000) IU per ml**. This concentration is chosen for its ease of measurement using a standardized 2 ml spoon: * **At 9 months (with Measles/MR vaccine):** A half-spoon dose (1 ml) provides **1 Lakh IU**. * **From 18 months to 5 years:** A full-spoon dose (2 ml) provides **2 Lakh IU**. This standardized concentration ensures that health workers can deliver the correct dosage (1 Lakh vs. 2 Lakh IU) simply by adjusting the volume administered. ### **Why Other Options are Incorrect** * **Option A (25,000 IU/ml):** This concentration is too low for the national program; it would require administering 4–8 ml of syrup, increasing the risk of aspiration and wastage. * **Options C & D (3 Lakh & 5 Lakh IU/ml):** These concentrations are dangerously high. Vitamin A is fat-soluble and stored in the liver; excessive doses can lead to acute toxicity (hypervitaminosis A), characterized by bulging fontanelles, vomiting, and increased intracranial pressure. ### **High-Yield Clinical Pearls for NEET-PG** * **Total Doses:** A child receives a total of **9 doses** starting from 9 months until 5 years of age. * **Total Cumulative Dose:** 17 Lakh IU (1 Lakh at 9 months + 8 doses of 2 Lakh every 6 months). * **Interval:** The minimum interval between two doses is **6 months**. * **Therapeutic Dose for Xerophthalmia:** If a child is diagnosed with active Vitamin A deficiency, the schedule is: **Day 0, Day 1, and Day 14** (Age <6m: 50k IU; 6-12m: 1 Lakh IU; >12m: 2 Lakh IU).

Question 87: Which of the following is NOT a benefit of the higher lactose content of breast milk?

A. Aids in the formation of galactocerebrosides
B. Assists in the absorption of calcium
C. Contributes to a decreased risk of infections (Correct Answer)
D. Promotes the growth of lactobacilli

Explanation: **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%).

Question 88: WHO defines moderate malnutrition as:

A. Weight-for-age between -3 and -2 z-scores below the median of the WHO child growth standards. (Correct Answer)
B. Weight-for-age between -1 and -2 z-scores below the median of the WHO child growth standards.
C. Weight-for-age between -3 and -4 z-scores below the median of the WHO child growth standards.
D. Weight-for-age < -3 z-scores below the median of the WHO child growth standards.

Explanation: **Explanation:** The WHO classification of nutritional status is based on **Z-scores (Standard Deviations)**, which compare a child's measurements to the median of a reference population. 1. **Why Option A is Correct:** According to WHO criteria, **Moderate Underweight** is defined as a Weight-for-Age (WFA) between **-2 and -3 Z-scores** below the median. This indicates a moderate deficit in body mass relative to age. Similarly, Moderate Acute Malnutrition (MAM) is defined as Weight-for-Height (WFH) between -2 and -3 Z-scores. 2. **Analysis of Incorrect Options:** * **Option B (-1 to -2 Z-scores):** This is classified as **Mild Malnutrition**. Children in this range are considered "at risk" but do not meet the threshold for moderate malnutrition. * **Option C (-3 to -4 Z-scores):** This falls under the category of **Severe Malnutrition**. Any score below -3 is considered severe. * **Option D (< -3 Z-scores):** This is the definition of **Severe Malnutrition** (Severe Underweight). In the context of Weight-for-Height, it defines Severe Acute Malnutrition (SAM). **High-Yield Clinical Pearls for NEET-PG:** * **SAM Definition:** To diagnose Severe Acute Malnutrition (6–59 months), any one of the following is required: 1. Weight-for-Height/Length **< -3 Z-score**. 2. Mid-Upper Arm Circumference (MUAC) **< 11.5 cm**. 3. Presence of **Bilateral Pitting Edema** (Nutritional Edema). * **Stunting:** Height-for-age < -2 Z-score (indicates chronic malnutrition). * **Wasting:** Weight-for-height < -2 Z-score (indicates acute malnutrition). * **Underweight:** Weight-for-age < -2 Z-score (composite indicator of both acute and chronic malnutrition).

Question 89: Which of the following should be given first in a severely malnourished child?

A. RESOMAL
B. Dextrose (Correct Answer)
C. 10% albumin
D. Vitamin A

Explanation: 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.

Question 90: In marasmus, wasting is due to?

A. Prolonged dietary deficiency of calories
B. Prolonged dietary deficiency of protein
C. Excess catabolism of fat and muscle mass to provide energy
D. All of the above (Correct Answer)

Explanation: **Explanation:** The correct answer is **D. All of the above**. Marasmus is a form of severe acute malnutrition (SAM) characterized by a global deficiency of all nutrients, primarily energy (calories). 1. **Underlying Concept:** In Marasmus, there is a **prolonged dietary deficiency of calories (Option A)** and **protein (Option B)**. Unlike Kwashiorkor, where the primary deficit is protein with adequate calories, Marasmus involves a total lack of food intake. 2. **Pathophysiology of Wasting:** To survive the energy deficit, the body enters a state of adaptation. It initiates **excess catabolism of subcutaneous fat and skeletal muscle mass (Option C)** to provide amino acids for gluconeogenesis and energy. This results in the classic "skin and bones" appearance. **Why other options are included:** While Option A is the primary driver, Marasmus rarely occurs without a concurrent protein deficiency (Option B). Option C describes the physiological process (autophagy/catabolism) that directly leads to the clinical sign of "wasting." Therefore, all three factors are inextricably linked in the pathogenesis of Marasmus. **High-Yield Clinical Pearls for NEET-PG:** * **Clinical Features:** "Old man" or "Monkey" facies (due to loss of buccal pad of fat), prominent ribs, and "baggy pants" appearance (loose skin folds over buttocks). * **Key Difference:** Edema is **absent** in Marasmus (it is the hallmark of Kwashiorkor). * **Psychological State:** The child is usually alert and irritable (in Kwashiorkor, the child is lethargic and apathetic). * **Growth:** Severe growth retardation and weight-for-height < -3 SD are characteristic.

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

Practice Questions

Eating Disorders

Practice Questions

Parenteral and Enteral Nutrition

Practice Questions

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