Pediatric Nutrition Practice Questions

Q: What is the approximate amount of protein in 100 ml of cow's milk?

3 g. **Explanation:** The nutritional composition of milk is a high-yield topic in Pediatric Nutrition. The correct answer is **3 g** (specifically around 3.2–3.3 g per 100 ml). **Why Option B is Correct:** Cow’s milk contains significantly more protein than human milk to support the rapid growth of calves. It contains approximately **3.2 g of protein per 100 ml**. Crucially, the protein quality also differs; cow’s milk is **casein-dominant** (80% casein, 20% whey), whereas human milk is **whey-dominant** (60% whey, 40% casein), making human milk easier for infants to digest. **Analysis of Incorrect Options:** * **Option A (1 g):** This is closer to the protein content of **Human Milk**, which contains approximately **1.1–1.2 g/100 ml**. This lower concentration is ideal for human infants as it places less solute load on their immature kidneys. * **Option C & D (4 g - 4.5 g):** These values are too high for standard cow's milk. However, they may represent the protein content of milk from other species, such as buffalo milk (approx. 3.8–4.3 g/100 ml). **High-Yield Clinical Pearls for NEET-PG:** * **Caloric Value:** Both human milk and cow’s milk provide approximately **67 kcal/100 ml**. * **Renal Solute Load:** Cow’s milk has a much higher renal solute load (due to high protein and minerals like Sodium, Potassium, and Phosphorus) compared to breast milk, which can lead to dehydration in young infants. * **Iron Bioavailability:** While both milks are low in iron, the iron in breast milk has much higher bioavailability (50%) compared to cow’s milk (10%). * **Calcium-Phosphate Ratio:** Human milk has a ratio of **2:1**, which is ideal for calcium absorption and prevents hypocalcemic tetany.

Q: Nutritional rickets is treated with a single dose of vitamin D?

15000 mcg. **Explanation:** The treatment of nutritional rickets involves high-dose Vitamin D supplementation to rapidly restore serum levels and initiate bone mineralization. The standard therapeutic approach is **Stoss therapy**, which involves the administration of a single large oral or intramuscular dose of Vitamin D (Cholecalciferol). **Why 15,000 mcg is correct:** In clinical practice, the recommended dose for Stoss therapy is **300,000 to 600,000 IU**. * Since **1 mcg of Vitamin D = 40 IU**, a dose of **15,000 mcg** equals exactly **600,000 IU** (15,000 × 40). This dose is effective in ensuring compliance and provides a sustained release of Vitamin D from fat stores over several weeks. **Analysis of Incorrect Options:** * **A (5,000 mcg / 200,000 IU):** This is below the standard threshold for Stoss therapy in older children, though it may be used in very young infants (under 6 months) to minimize the risk of hypercalcemia. * **B (10,000 mcg / 400,000 IU):** While within the therapeutic range (300k–600k IU), 15,000 mcg is the traditionally cited "upper-limit" single dose in standard pediatric textbooks (like Nelson or Ghai) for definitive treatment. * **D (20,000 mcg / 800,000 IU):** This dose exceeds the recommended safety limit and significantly increases the risk of Vitamin D toxicity and hypercalciuria. **High-Yield Clinical Pearls for NEET-PG:** 1. **Radiological Sign of Healing:** The first sign of healing on X-ray is the appearance of a **line of preparatory calcification** at the zone of provisional calcification (usually within 1–2 weeks). 2. **Biochemical Marker:** Serum **Alkaline Phosphatase (ALP)** is the best marker to monitor the activity of the disease and the response to treatment (it remains elevated until healing is complete). 3. **Calcium Supplementation:** Always co-administer elemental calcium (50–75 mg/kg/day) with Stoss therapy to prevent "hungry bone syndrome" and symptomatic hypocalcemia.

Q: Which of the following is a poor indicator of response during the treatment of malnutrition?

Presence of edema on day 10. In the management of Severe Acute Malnutrition (SAM), monitoring the clinical response is vital to identify "treatment failure." The World Health Organization (WHO) and IAP guidelines define specific criteria for poor response during the rehabilitation phase. ### **Why "Presence of edema on day 10" is the correct answer:** The resolution of edema is one of the earliest signs of recovery in Kwashiorkor. In a child responding well to treatment, edema should typically disappear by **Day 10 to Day 14**. If edema persists beyond Day 10, it indicates a poor response to the nutritional protocol, underlying infection, or complications like heart failure or electrolyte imbalance. ### **Explanation of Other Options:** * **Failure to gain appetite by Day 10:** This is a classic indicator of poor response. A child with SAM should regain their appetite during the transition from the stabilization phase (F-75) to the rehabilitation phase (F-100). Persistent anorexia suggests untreated infection or metabolic issues. * **Failure to gain at least 5 g/kg/day by Day 4:** Weight gain is categorized as: * **Poor:** 10 g/kg/day If a child fails to gain at least 5 g/kg/day by the 4th day of the rehabilitation phase, it is considered a failure to respond. ### **High-Yield Clinical Pearls for NEET-PG:** * **Primary goal of Stabilization Phase (Days 1-7):** Treat/prevent hypoglycemia, hypothermia, dehydration, and infection. * **Feeding:** Use **F-75** (75 kcal/100ml) for stabilization and **F-100** (100 kcal/100ml) for catch-up growth. * **Criteria for Discharge:** Edema has resolved, the child is eating well, and has a Weight-for-Height > -2 SD (Z-score). * **Iron Supplementation:** Never give iron in the stabilization phase; it can promote bacterial growth and oxidative stress. Start only in the rehabilitation phase.

Q: What is the approximate protein content of breast milk?

0.9-1.1 g/dL. **Explanation:** The protein content of mature human breast milk is approximately **0.9 to 1.1 g/dL**. This is a high-yield fact in Community Medicine and Pediatrics. While breast milk has a lower total protein concentration compared to animal milk, its biological value is superior. The proteins consist primarily of **whey (60%)** and **casein (40%)**, making it easily digestible for the infant's immature gastrointestinal tract. **Analysis of Options:** * **Option A (0.9-1.1 g/dL):** This is the correct physiological range for mature breast milk. It provides the ideal nitrogen balance for growth without overloading the infant's developing kidneys (low renal solute load). * **Option B (2.0-3.0 g/dL):** This range is too high for human milk but is closer to the protein content found in certain animal milks (e.g., goat milk is ~3.5 g/dL). * **Option C (3.5-4.0 g/dL):** This represents the protein content of **Cow’s milk (approx. 3.2–3.5 g/dL)**. Cow’s milk has nearly three times the protein of human milk, predominantly casein, which forms hard curds in the infant's stomach. * **Option D (5.0-5.5 g/dL):** This value is significantly higher than any standard mammalian milk used for infant feeding and would cause severe dehydration and uremia in a neonate. **High-Yield NEET-PG Pearls:** 1. **Energy Value:** Breast milk provides approximately **65–70 kcal/100 ml**. 2. **Fat Content:** Roughly **3.5–4.5 g/dL**, providing about 50% of the total calories. 3. **Carbohydrates:** Human milk is rich in **Lactose (7 g/dL)**, which is higher than in cow’s milk (4.5 g/dL). 4. **Colostrum:** The first milk produced (days 1–5) is richer in proteins (especially IgA) and fat-soluble vitamins but lower in fat and lactose compared to mature milk.

Q: Kwashiorkor is characterized by all of the following features except?

Fatty infiltration of pancreas. **Explanation:** Kwashiorkor is a form of severe acute malnutrition (SAM) primarily caused by a deficiency of dietary protein despite adequate or near-adequate caloric intake. **Why Option D is the correct answer:** In Kwashiorkor, the pancreas undergoes **atrophy and fibrosis** of the acinar cells, leading to impaired secretion of digestive enzymes (exocrine insufficiency). While the **liver** characteristically undergoes fatty infiltration (steatosis) due to decreased synthesis of apolipoproteins (required for VLDL export), the **pancreas does not exhibit fatty infiltration**. Therefore, "Fatty infiltration of pancreas" is the incorrect feature. **Analysis of Incorrect Options:** * **A. Edema:** This is the hallmark of Kwashiorkor (distinguishing it from Marasmus). It is primarily caused by hypoalbuminemia leading to decreased oncotic pressure, along with oxidative stress and sodium retention. * **B. Patchy depigmentation of hair:** Known as the **"Flag Sign,"** this occurs due to alternating periods of poor and better nutrition. Hair becomes thin, brittle, and loses its pigment (hypochromotrichia) due to amino acid deficiencies (e.g., tyrosine). * **C. Fatty liver:** As mentioned, the lack of carrier proteins (apolipoproteins) prevents the transport of triglycerides out of the liver, resulting in a soft, enlarged, and fatty liver (hepatomegaly). **High-Yield Clinical Pearls for NEET-PG:** * **Dermatosis:** "Flaky paint" or "Crazy pavement" dermatosis is characteristic of Kwashiorkor. * **Mental Status:** Children with Kwashiorkor are typically **apathetic and irritable**, whereas those with Marasmus are usually alert but hungry. * **Marasmic-Kwashiorkor:** A combined state where there is both profound wasting (Marasmus) and the presence of edema (Kwashiorkor). * **Key Biochemical Marker:** Low serum albumin (<2.8 g/dL).

Q: In a child weighing 15 kg, what is the approximate daily fluid maintenance requirement?

1250 mL. The calculation of daily maintenance fluid in pediatrics is based on the **Holliday-Segar Formula**, which estimates caloric expenditure and corresponding water needs based on body weight. ### **The Holliday-Segar Rule (100/50/20 Rule):** * **First 10 kg:** 100 mL/kg/day * **Next 10 kg (11–20 kg):** 50 mL/kg/day * **Each kg above 20 kg:** 20 mL/kg/day **Calculation for a 15 kg child:** 1. First 10 kg: $10 \times 100 \text{ mL} = 1000 \text{ mL}$ 2. Remaining 5 kg: $5 \times 50 \text{ mL} = 250 \text{ mL}$ 3. **Total:** $1000 + 250 = \mathbf{1250 \text{ mL/day}}$ ### **Analysis of Options:** * **A (100 mL):** This is the rate per kg for only the first 10 kg, not the total volume. * **C (1500 mL):** This would be the requirement for a 20 kg child ($1000 + 500$). * **D (1750 mL):** This would be the requirement for a child weighing approximately 32.5 kg. ### **High-Yield Clinical Pearls for NEET-PG:** * **Hourly Rate (4/2/1 Rule):** For quick calculations, use 4 mL/kg/hr for the first 10 kg, 2 mL/kg/hr for the next 10 kg, and 1 mL/kg/hr thereafter. For this child: $(10 \times 4) + (5 \times 2) = 50 \text{ mL/hr}$. * **Fluid Choice:** Isotonic solutions (e.g., 0.9% Normal Saline) are now preferred over hypotonic solutions (like 0.18% NS) for maintenance in hospitalized children to prevent **iatrogenic hyponatremia**. * **Exceptions:** Maintenance requirements increase with fever (12% for every 1°C rise) and decrease in conditions like SIADH, oliguric renal failure, or congestive heart failure.

Q: What serum albumin level is considered indicative of a mild degree of malnutrition?

3 g/dL. **Explanation:** Serum albumin is a widely used biochemical marker for assessing visceral protein status and the severity of malnutrition. In pediatric clinical practice, albumin levels are categorized to determine the degree of protein-energy malnutrition (PEM). **1. Why Option C is Correct:** A serum albumin level of **2.8 to 3.5 g/dL** is clinically classified as **mild malnutrition**. Since 3 g/dL falls squarely within this range, it is the most appropriate answer. Albumin has a relatively long half-life (approx. 20 days), making it a better indicator of chronic nutritional status rather than acute changes. **2. Analysis of Incorrect Options:** * **Option A (4 g/dL):** This is within the **normal range** (typically 3.5 to 5.0 g/dL). A child with this level is considered to have adequate protein stores. * **Option B (3.5 g/dL):** This is the **lower limit of normal**. While it may represent a borderline state, it is generally not classified as malnutrition until it drops below 3.5 g/dL. * **Option D (2.5 g/dL):** This level indicates **moderate malnutrition** (typically 2.1 to 2.7 g/dL). Levels below 2.1 g/dL are classified as severe malnutrition and are often associated with clinical edema (Kwashiorkor). **3. NEET-PG High-Yield Pearls:** * **Pre-albumin:** Better for monitoring *acute* nutritional changes due to its shorter half-life (2 days). * **Kwashiorkor vs. Marasmus:** Hypoalbuminemia is the hallmark of Kwashiorkor (edematous malnutrition), whereas albumin levels may remain near normal in Marasmus until late stages. * **Transferrin:** Another visceral protein marker; levels <150 mg/dL indicate severe malnutrition. * **Limitation:** Albumin is a "negative acute-phase reactant," meaning levels drop during infection or inflammation regardless of nutritional intake.

Question 1

Which of the following are characteristic features of Vitamin D deficiency rickets?

Accepted Answer

Widened anterior fontanel

Answer

Increased forehead sweating

Answer

Characteristically decreased calcium

Answer

Increased alkaline phosphatase

Question 2

What is the approximate amount of protein in 100 ml of cow's milk?

Accepted Answer

3 g

Answer

1 g

Answer

4 g

Answer

4.5 g

Question 3

Nutritional rickets is treated with a single dose of vitamin D?

Accepted Answer

15000 mcg

Answer

5000 mcg

Answer

10000 mcg

Answer

20000 mcg

Question 4

Which of the following infections can be transmitted through breast milk?

Accepted Answer

Cytomegalovirus (CMV)

Answer

Tuberculosis

Answer

Varicella

Answer

Rubella

Question 5

Which of the following is a poor indicator of response during the treatment of malnutrition?

Accepted Answer

Presence of edema on day 10

Answer

Failure to gain appetite by day 10

Answer

Failure to gain at least 5 g/kg/day by day 4

Answer

All of the above

Question 6

What is the approximate protein content of breast milk?

Accepted Answer

0.9-1.1 g/dL

Answer

2.0-3.0 g/dL

Answer

3.5-4.0 g/dL

Answer

5.0-5.5 g/dL

Question 7

Which of the following is an age-dependent index?

Accepted Answer

All of the above

Answer

Kanawati and Mclaren index

Answer

Jellife ratio

Answer

Rao and Singh index

Question 8

Kwashiorkor is characterized by all of the following features except?

Accepted Answer

Fatty infiltration of pancreas

Answer

Edema

Answer

Patchy depigmentation of hair

Answer

Fatty liver

Question 9

In a child weighing 15 kg, what is the approximate daily fluid maintenance requirement?

Accepted Answer

1250 mL

Answer

100 mL

Answer

1500 mL

Answer

1750 mL

Question 10

What serum albumin level is considered indicative of a mild degree of malnutrition?

Accepted Answer

3 g/dL

Answer

4 g/dL

Answer

3.5 g/dL

Answer

2.5 g/dL

Pediatric Nutrition — MCQs

Pediatric Nutrition — MCQs

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