Pediatric Nutrition Practice Questions

Q: What is the daily requirement of potassium in a child?

1-2 mEq/kg. **Explanation:** The daily maintenance requirement for electrolytes in children is calculated based on their metabolic needs and body weight. For **Potassium (K⁺)**, the standard maintenance dose is **1–2 mEq/kg/day**. **Why Option A is correct:** Potassium is the primary intracellular cation. In a healthy child, the kidneys efficiently regulate potassium balance. A dose of 1–2 mEq/kg/day is sufficient to replace obligatory losses through urine, sweat, and stool without exceeding the renal excretory capacity. This range ensures the maintenance of normal serum potassium levels (3.5–5.5 mEq/L), which is critical for cardiac conduction and neuromuscular function. **Why other options are incorrect:** * **Option B (4–7 mEq/kg):** This range is excessively high for routine maintenance and could lead to hyperkalemia, especially if renal function is slightly compromised. Such doses are only considered under specific conditions of massive ongoing losses (e.g., certain tubulopathies). * **Options C and D (10–14 mEq/kg):** These values are dangerously high and are not used in pediatric practice. Administering potassium at these levels would likely result in life-threatening cardiac arrhythmias. **High-Yield Clinical Pearls for NEET-PG:** * **Sodium Requirement:** The daily maintenance requirement for Sodium (Na⁺) is **2–3 mEq/kg/day**. * **Holliday-Segar Formula:** Used to calculate maintenance fluid: 100 mL/kg for the first 10 kg, 50 mL/kg for the next 10 kg, and 20 mL/kg for every kg thereafter. * **Rule of Thumb:** Never add potassium to intravenous fluids until the child has **voided (documented urine output)** to avoid accidental hyperkalemia in the setting of renal failure. * **Maximum Concentration:** For peripheral IV lines, the potassium concentration should generally not exceed **40 mEq/L**.

Q: All of the following comprise the classical triad for congenital rubella syndrome, EXCEPT:

Micrognathia. **Explanation:** Congenital Rubella Syndrome (CRS) occurs due to transplacental transmission of the Rubella virus, primarily during the first trimester of pregnancy. The "Classical Triad," also known as **Gregg’s Triad**, consists of specific ocular, auditory, and cardiac malformations. 1. **Why Micrognathia is the correct answer:** Micrognathia (a small jaw) is not a component of the classical triad. While CRS can cause various craniofacial minor anomalies like microcephaly, micrognathia is more characteristically associated with conditions like **Pierre Robin Sequence** or **Trisomy 18 (Edwards Syndrome)**. 2. **Analysis of Incorrect Options (The Classical Triad):** * **Sensory Neural Deafness (Option A):** This is the **most common** manifestation of CRS (occurring in ~80% of cases). It is often bilateral and may be the only finding in late-gestation infections. * **Cataract (Option B):** Ocular defects are a hallmark. While "salt and pepper" retinopathy is the most common eye finding, **pearly white cataracts** (often bilateral) and glaucoma are the classic structural defects described in the triad. * **Patent Ductus Arteriosus (Option C):** PDA is the most common cardiac lesion in CRS, followed by peripheral pulmonary artery stenosis. **Clinical Pearls for NEET-PG:** * **Most common finding overall:** Sensorineural hearing loss. * **Most common cardiac lesion:** PDA (described as a "machinery murmur"). * **Dermatological finding:** "Blueberry muffin" spots (due to extramedullary hematopoiesis). * **Radiological finding:** "Celery stalking" (longitudinal radiolucent striations in the metaphysis of long bones). * **Prevention:** Live attenuated **RA 27/3 vaccine**. Note: Pregnancy should be avoided for 1 month after vaccination.

Q: Kwashiorkor is characterized by all of the following except –

Alertness. **Explanation:** Kwashiorkor is a form of severe acute malnutrition (SAM) primarily caused by a **deficiency of protein** despite adequate or near-adequate calorie intake. **Why "Alertness" is the correct answer:** Children with Kwashiorkor are characteristically **apathetic, lethargic, and irritable**. They show a lack of interest in their surroundings and are often difficult to console. "Alertness" is a feature more commonly associated with mild malnutrition or the early stages of Marasmus; in Kwashiorkor, the mental state is significantly dulled due to metabolic disturbances and protein deficiency. **Analysis of Incorrect Options:** * **Edema (Option B):** This is the **hallmark** of Kwashiorkor (pitting edema starting in the feet). It occurs due to hypoalbuminemia, which leads to decreased oncotic pressure. * **Dermatitis (Option A):** Often described as **"Flaky-paint" or "Crazy-pavement" dermatosis**. The skin becomes hyperpigmented, cracks, and peels off, leaving pale areas underneath. * **Flag Sign (Option C):** This refers to alternating bands of light (hypopigmented) and dark hair, reflecting periods of poor and relatively better protein intake, respectively. **High-Yield Clinical Pearls for NEET-PG:** * **Age group:** Typically seen in children aged 1–5 years (often after weaning when the diet shifts to high-carbohydrate/low-protein). * **Fatty Liver:** Unlike Marasmus, Kwashiorkor features an enlarged, fatty liver (steatosis) due to decreased synthesis of **apolipoproteins** (specifically Apo-B100) required for lipid transport. * **Key distinction:** Marasmus = "Balanced" starvation (Calorie + Protein deficiency); Kwashiorkor = Protein deficiency > Calorie deficiency. * **Pot-belly appearance:** Due to weak abdominal muscles and hepatomegaly.

Q: What is the normal calorie requirement for a 5-year-old child?

1500 calories. **Explanation:** The caloric requirement of a child is determined by their age, sex, and activity level. For NEET-PG, the standard formula used to estimate daily calorie requirements in children (from 1 to 10 years) is: **1000 + (Age in years × 100)**. Applying this formula for a 5-year-old: $1000 + (5 \times 100) = \mathbf{1500 \text{ kcal/day}}$. **Analysis of Options:** * **A (800 calories):** This is insufficient for a 5-year-old. An intake of ~800 kcal is more appropriate for an infant between 6–9 months of age (approx. 80-100 kcal/kg). * **B (1000 calories):** This is the baseline requirement for a 1-year-old child. * **C (1500 calories):** **Correct.** Following the standard growth formula, a 5-year-old requires 1500 kcal to support basal metabolic rate, physical activity, and growth spurts. * **D (2000 calories):** This is the approximate requirement for a 10-year-old child ($1000 + 10 \times 100$) or an adolescent/adult with a sedentary lifestyle. **High-Yield Clinical Pearls for NEET-PG:** 1. **Infant Requirements:** An infant requires roughly **100-120 kcal/kg/day**. This requirement decreases as the child grows. 2. **Rule of Thumb:** Calorie requirements increase by approximately 100 kcal for every year of age until puberty. 3. **Protein Requirement:** For a child, the protein requirement is approximately **1.1 g/kg/day** (ICMR guidelines). 4. **Fluid Requirement (Holliday-Segar Formula):** * First 10 kg: 100 ml/kg * Next 10 kg: 50 ml/kg * Each kg thereafter: 20 ml/kg

Q: What is the daily caloric requirement for a 7-year-old boy who is ill and has a fever?

1900 kcal/day. ### Explanation **1. Understanding the Correct Answer (C: 1900 kcal/day)** The caloric requirement for children is calculated based on age, gender, and physiological state. For a healthy **7-year-old boy**, the average daily requirement is approximately **1600–1700 kcal/day** (based on ICMR/IAP guidelines). However, the question specifies the child is **ill and has a fever**. Fever increases the Basal Metabolic Rate (BMR). A high-yield clinical rule is that the **BMR increases by approximately 12–13% for every 1°C rise in body temperature** (or 7% for every 1°F). To account for the increased metabolic demand during illness, the caloric intake must be adjusted upwards. Thus, 1900 kcal represents the baseline requirement plus the additional energy needed to combat the febrile state. **2. Analysis of Incorrect Options** * **A (1200 kcal/day):** This is insufficient for a 7-year-old; it is closer to the requirement of a 1–3 year old (approx. 1000–1200 kcal). * **B (1500 kcal/day):** This is the baseline requirement for a younger child (approx. 4–5 years) or a sedentary 7-year-old, but it fails to account for the increased metabolic stress of fever. * **D (2200 kcal/day):** This exceeds the requirement for this age group, even with fever. This level of intake is typically seen in adolescent males (12–14 years) or very active older children. **3. High-Yield Clinical Pearls for NEET-PG** * **Holiday-Segar Formula:** Used for maintenance fluids, but also reflects caloric needs: 100 kcal/kg for first 10kg, 50 kcal/kg for next 10kg, and 20 kcal/kg thereafter. * **Catch-up Growth:** Malnourished children may require up to 150–200 kcal/kg/day. * **Protein Requirement:** For a school-aged child, it is approximately **0.9–1.1 g/kg/day**. * **Fever & Fluids:** For every degree Celsius of fever, insensible water loss increases by ~10–12%.

Q: A 7-year-old boy is newly diagnosed with type 1 Diabetes mellitus and started on insulin therapy. When should screening for nephropathy begin in this child?

5 years after the onset of diabetes. ### Explanation The correct answer is **C. 5 years after the onset of diabetes.** **1. Why Option C is Correct:** In Type 1 Diabetes Mellitus (T1DM), diabetic nephropathy rarely develops before puberty or within the first few years of the disease. According to the International Society for Pediatric and Adolescent Diabetes (ISPAD) and ADA guidelines, screening for microalbuminuria (the earliest sign of nephropathy) should begin **5 years after the diagnosis** in children who are **at least 11 years old** or have reached **puberty**. Since this child is 7 years old, the metabolic insult requires time to manifest as structural renal damage. **2. Why Other Options are Incorrect:** * **Option A & B:** Unlike Type 2 Diabetes, where the exact onset is often unknown and complications may already be present at diagnosis, Type 1 has a clear clinical onset. Structural changes in the glomeruli take years of chronic hyperglycemia to develop; thus, screening immediately or at 1 year is not cost-effective and clinically unnecessary. * **Option D:** Waiting 10 years is dangerous, as significant, irreversible renal damage (macroalbuminuria) may occur by then. Early detection at 5 years allows for interventions like strict glycemic control and ACE inhibitors to slow progression. **3. High-Yield Clinical Pearls for NEET-PG:** * **Screening Tool:** The first sign is **Microalbuminuria** (30–300 mg/day or Albumin-to-Creatinine Ratio of 30–300 mg/g). * **Associated Screening:** * **Retinopathy:** Also begins 5 years after diagnosis (T1DM). * **Celiac & Thyroid Disease:** Screen **at the time of diagnosis** (autoimmune association). * **Hypertension:** Should be screened at **every clinical visit**. * **T2DM Exception:** In Type 2 Diabetes, screening for nephropathy begins **at the time of diagnosis**.

Q: A child presents with alopecia, genital and oral hyperpigmentation with psoriatic dermatitis, and hypogonadism. What is the likely deficiency causing these symptoms?

Zinc deficiency. ### Explanation The clinical presentation described is classic for **Zinc deficiency**. Zinc is a vital trace element required for DNA synthesis, cell division, and protein metabolism. **Why Zinc Deficiency is Correct:** The hallmark triad of zinc deficiency includes **acrodermatitis** (periorificial and acral dermatitis), **alopecia**, and **diarrhea**. * **Dermatitis:** Characterized by erythematous, vesiculobullous, or psoriasiform plaques typically found around the mouth, anus, and genitals (periorificial). * **Hypogonadism:** Zinc is essential for the function of the pituitary-gonadal axis; deficiency leads to delayed puberty and stunted growth. * **Acrodermatitis Enteropathica:** An autosomal recessive disorder involving a mutation in the *SLC39A4* gene, which impairs intestinal zinc absorption, leading to these exact symptoms in infancy. **Why Other Options are Incorrect:** * **Copper Deficiency:** Typically presents with microcytic anemia (unresponsive to iron), neutropenia, and skeletal abnormalities (scurvy-like bone changes). It does not cause periorificial dermatitis. * **Iron Deficiency:** Primarily manifests as microcytic hypochromic anemia, pica, and koilonychia (spoon-shaped nails), but not the specific psoriasiform skin lesions or hypogonadism seen here. * **Magnesium Deficiency:** Usually presents with neuromuscular irritability, such as tremors, carpopedal spasm, tetany, and seizures, rather than dermatological or gonadal issues. **High-Yield Clinical Pearls for NEET-PG:** * **Acrodermatitis Enteropathica** typically manifests when a breastfed infant is weaned, as breast milk contains a zinc-binding ligand that aids absorption. * **Zinc and Diarrhea:** Zinc supplementation is a WHO-recommended standard of care for acute diarrhea to reduce duration and severity. * **Other Zinc signs:** Impaired wound healing, depressed immunity, and **dysgeusia** (distorted sense of taste).

Question 1

What is the daily requirement of potassium in a child?

Accepted Answer

1-2 mEq/kg

Answer

4-7 mEq/kg

Answer

10-12 mEq/kg

Answer

13-14 mEq/kg

Question 2

All of the following comprise the classical triad for congenital rubella syndrome, EXCEPT:

Accepted Answer

Micrognathia

Answer

Sensory neural deafness

Answer

Cataract

Answer

Patent ductus arteriosus

Question 3

Kwashiorkor is characterized by all of the following except –

Accepted Answer

Alertness

Answer

Dermatitis

Answer

Edema

Answer

Flag sign

Question 4

What defines exclusive breast feeding?

Accepted Answer

Breast feeding exclusively, without any other foods or liquids

Answer

Breast feeding on demand only, with solid foods given at other times

Answer

Breast feeding supplemented with solid foods and water

Answer

Breast feeding supplemented with water

Question 5

All of the following are true regarding breastfeeding EXCEPT:

Accepted Answer

Breastfeeding should be started after 4 hours of normal delivery.

Answer

It is available at a proper temperature.

Answer

Breastmilk contains antibodies.

Answer

Exclusive breastfeeding should be continued up to 6 months of age.

Question 6

What is the normal calorie requirement for a 5-year-old child?

Accepted Answer

1500 calories

Answer

800 calories

Answer

1000 calories

Answer

2000 calories

Question 7

What is the daily caloric requirement for a 7-year-old boy who is ill and has a fever?

Accepted Answer

1900 kcal/day

Answer

1200 kcal/day

Answer

1500 kcal/day

Answer

2200 kcal/day

Question 8

A 7-year-old boy is newly diagnosed with type 1 Diabetes mellitus and started on insulin therapy. When should screening for nephropathy begin in this child?

Accepted Answer

5 years after the onset of diabetes

Answer

Immediately

Answer

1 year after the onset of diabetes

Answer

10 years after the onset of diabetes

Question 9

Which statement is incorrect regarding human milk?

Accepted Answer

Provides 67 kcal/100 ml of energy.

Answer

Carbohydrates contribute approximately 40% of the total energy.

Answer

Fats contribute more than 50% of the total energy.

Answer

All of the above statements are incorrect.

Question 10

A child presents with alopecia, genital and oral hyperpigmentation with psoriatic dermatitis, and hypogonadism. What is the likely deficiency causing these symptoms?

Accepted Answer

Zinc deficiency

Answer

Copper deficiency

Answer

Iron deficiency

Answer

Magnesium deficiency

Pediatric Nutrition — MCQs

Pediatric Nutrition — MCQs

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