Pediatric Nutrition Practice Questions

Q: True about juvenile rickets is:

All of the above.. **Explanation:** Juvenile rickets (nutritional rickets) is a disorder of defective mineralization of the bone matrix and osteoid, primarily due to Vitamin D deficiency. Since teeth and bones share similar mineralization processes involving calcium and phosphate, the dental system is significantly affected during periods of active growth. **Why "All of the above" is correct:** 1. **Developmental anomalies (Option A):** Vitamin D is crucial for the function of ameloblasts (enamel-forming cells) and odontoblasts (dentin-forming cells). Deficiency leads to **enamel hypoplasia** (pitting or thinning of enamel) and defects in dentin mineralization (interglobular dentin). 2. **Delayed eruption (Option B):** This is a hallmark clinical sign. The lack of adequate mineral density in the alveolar bone and the structural weakness of the tooth germ result in a significant delay in the eruption of both deciduous and permanent teeth. 3. **Misalignment (Option C):** Rickets leads to softening of the alveolar bone (the bone supporting the teeth). Under the pressure of chewing or tongue movement, this softened bone deforms, leading to malocclusion and misalignment of the dental arch. **Clinical Pearls for NEET-PG:** * **Earliest sign of Rickets:** Craniotabes (softening of skull bones), usually seen before 6 months of age. * **Most common dental finding:** Enamel hypoplasia. * **Radiological sign:** "Cupping, splaying, and fraying" of the metaphysis (best seen at the lower end of the radius and ulna). * **Biochemical profile:** Low/Normal Calcium, Low Phosphate, and **Elevated Alkaline Phosphatase (ALP)**—ALP is the most sensitive marker for disease activity and treatment response.

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: A 6-year-old girl on a predominantly maize-based diet presents with a history of recurrent diarrhea and dermatitis with rashes involving the neck area. What is the most likely diagnosis?

Pellagra. ### Explanation **Correct Option: A. Pellagra** Pellagra is caused by a deficiency of **Niacin (Vitamin B3)** or its precursor amino acid, **Tryptophan**. This condition is classically associated with a **maize (corn)-based diet**. Maize contains niacin in a bound, unabsorbable form (niacytin) and is deficient in tryptophan. The clinical hallmark of Pellagra is the "3 Ds": 1. **Dermatitis:** Characteristically photosensitive. The rash around the neck is known as **Casal’s necklace**. 2. **Diarrhea:** Due to atrophy of the gastrointestinal mucosal villi. 3. **Dementia:** Progressing from irritability and insomnia to disorientation and encephalopathy. **Why other options are incorrect:** * **B. Tyrosinemia:** A metabolic disorder of tyrosine catabolism. It typically presents with liver failure (jaundice, hepatomegaly), renal tubular dysfunction (Fanconi syndrome), and a "boiled cabbage" odor, not photosensitive dermatitis. * **C. Phenylketonuria (PKU):** Caused by phenylalanine hydroxylase deficiency. It presents with intellectual disability, seizures, and a "mousy" body odor. While skin may be fair/hypopigmented, it does not present with Casal’s necklace. * **D. Albinism:** A genetic defect in melanin synthesis. It causes generalized hypopigmentation of the skin, hair, and eyes (photophobia/nystagmus), but does not cause diarrhea or neck-specific rashes. **High-Yield Clinical Pearls for NEET-PG:** * **Hartnup Disease:** A genetic disorder of neutral amino acid transport that can present with "Pellagra-like" symptoms due to poor tryptophan absorption. * **Carcinoid Syndrome:** Can lead to Pellagra because dietary tryptophan is diverted to overproduce Serotonin. * **Isoniazid (INH) Therapy:** Can precipitate Pellagra as it interferes with the conversion of tryptophan to niacin. * **Dietary Source:** Sorghum (Jowar) consumption can also cause Pellagra due to high **Leucine** levels, which interfere with tryptophan metabolism.

Q: Compared to breast milk, colostrum is richer in which component?

Protein. **Explanation:** Colostrum is the "first milk" produced during the first 2–4 days postpartum. It is specifically designed to meet the immediate needs of a neonate, focusing on immunity and growth rather than caloric density. **1. Why Protein is the Correct Answer:** Colostrum contains significantly higher concentrations of **proteins** compared to mature breast milk. These proteins are primarily **immunoglobulins (especially IgA)**, lactoferrin, and albumin. The high IgA content provides essential passive immunity to protect the neonate’s gut mucosa. Additionally, colostrum is richer in fat-soluble vitamins (A, D, E, K) and minerals like sodium and zinc. **2. Why Other Options are Incorrect:** * **Fat (B):** Mature milk has a higher fat content than colostrum to provide the necessary calories for rapid infant weight gain. * **Lactose (C):** The carbohydrate content (lactose) is lower in colostrum and increases as the milk transitions to mature milk to support the developing brain and energy needs. * **Water (D):** Mature milk has a higher water content to ensure hydration as the infant's intake volume increases. **NEET-PG High-Yield Pearls:** * **Color:** Colostrum is deep yellow due to high **Beta-carotene** content. * **Energy Value:** Colostrum provides approximately **67 kcal/100 ml**, which is slightly less than mature milk (approx. 70-75 kcal/100 ml). * **Volume:** Produced in small quantities (10–100 ml/day), matching the small stomach capacity of a newborn. * **Transition:** Milk produced from day 4 to 2 weeks is "transitional milk," after which it becomes "mature milk."

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: Mid-upper arm circumference (MUAC) color coding is used to assess malnutrition. Yellow color indicates mild to moderate malnutrition. What is the MUAC reading corresponding to the yellow color?

12.5 cm to 13.5 cm. **Explanation:** Mid-upper arm circumference (MUAC) is a rapid, reliable screening tool used to assess the nutritional status of children aged 6 to 59 months. It reflects the muscle mass and subcutaneous fat, which are sensitive indicators of acute protein-energy malnutrition. The Shakir tape (MUAC tape) is color-coded for easy field assessment: * **Red ( 13.5 cm):** Indicates a **Satisfactory** nutritional status. **Analysis of Options:** * **Option C (Correct):** 12.5 cm to 13.5 cm is the standard WHO/UNICEF cut-off for the yellow zone, representing moderate malnutrition. * **Option A & B:** These are incorrect because 11.5 cm is the threshold for the Red zone (SAM). Any reading below 12.5 cm but above 11.5 cm is often categorized as "borderline" or included in older classifications, but the standard yellow zone starts at 12.5 cm. * **Option D:** 12 cm is not a standard cut-off point in the current WHO classification for MUAC color coding. **High-Yield Clinical Pearls for NEET-PG:** * **Age Group:** MUAC is most valid for children between **6 months and 5 years**. * **Advantage:** Unlike Weight-for-Height, MUAC is independent of height and is not affected by edema (though it may be falsely "normal" in kwashiorkor). * **SAM Criteria:** A child is diagnosed with SAM if MUAC is **<11.5 cm**, OR Weight-for-Height Z-score is **<-3 SD**, OR there is **bilateral pitting edema**.

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).

Question 1

True about juvenile rickets is:

Accepted Answer

All of the above.

Answer

Developmental anomalies of dentin and enamel occur.

Answer

Delayed eruption of the dentition.

Answer

Misalignment of the teeth.

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

A 6-year-old girl on a predominantly maize-based diet presents with a history of recurrent diarrhea and dermatitis with rashes involving the neck area. What is the most likely diagnosis?

Accepted Answer

Pellagra

Answer

Tyrosinemia

Answer

Phenylketonuria

Answer

Albinism

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

What are the benefits of breast milk?

Accepted Answer

Less allergy

Answer

Better nutrition

Answer

Less infection

Answer

More diarrhea

Question 6

Compared to breast milk, colostrum is richer in which component?

Accepted Answer

Protein

Answer

Fat

Answer

Lactose

Answer

Water

Question 7

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 8

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 9

Mid-upper arm circumference (MUAC) color coding is used to assess malnutrition. Yellow color indicates mild to moderate malnutrition. What is the MUAC reading corresponding to the yellow color?

Accepted Answer

12.5 cm to 13.5 cm

Answer

11.5 to 12.5 cm

Answer

11.5 to 13.5 cm

Answer

12 to 13.5 cm

Question 10

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

Pediatric Nutrition — MCQs

Pediatric Nutrition — MCQs

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