Pediatric Nutrition Practice Questions

Q: Earliest sign of rickets is:

Craniotabes. **Explanation:** **Why Craniotabes is the correct answer:** Craniotabes refers to the softening of the skull bones (specifically the outer table of the occipital and parietal bones), which gives a characteristic "ping-pong ball" sensation upon palpation. In nutritional rickets, it is the **earliest clinical sign**, typically appearing in infants between **3 to 6 months** of age. It occurs because the rapidly growing skull is highly sensitive to the failure of mineralization caused by Vitamin D deficiency. **Analysis of Incorrect Options:** * **B. Harrison’s Groove:** This is a horizontal depression along the lower border of the chest at the insertion of the diaphragm. It is a later sign resulting from the inward pull of the diaphragm on softened ribs. * **C. Rachitic Rosary:** This refers to the palpable/visible enlargement of the costochondral junctions. While a classic sign, it usually develops after craniotabes as the child grows and the thorax undergoes more stress. * **D. Pigeon Breast (Pectus Carinatum):** This is a late structural deformity where the sternum projects anteriorly. It occurs due to chronic softening of the ribs and is not an early manifestation. **NEET-PG High-Yield Pearls:** * **Earliest Biochemical Change:** Increased Serum Alkaline Phosphatase (ALP) is often the first laboratory indicator. * **Earliest Radiological Sign:** Fraying and cupping of the distal ends of long bones (best seen at the **lower end of the radius and ulna**). * **Craniotabes Note:** It can be physiological in newborns; it is only considered pathological for rickets if it persists beyond the neonatal period. * **Widening of Wrists:** This is the most common clinical sign seen in older infants (6-12 months).

Q: What is the most common underlying cause responsible for the disease in which the given X-ray finding is seen?

Vitamin D deficiency. ***Vitamin D deficiency*** - The X-ray shows characteristic features of **rickets** including **metaphyseal widening**, **cupping**, **fraying**, and **widened growth plates**, most commonly caused by **vitamin D deficiency**. - **Vitamin D deficiency** leads to impaired **calcium absorption** and defective **bone mineralization**, resulting in the classic radiological changes of rickets. *Calcium deficiency* - **Calcium deficiency** is typically **secondary** to vitamin D deficiency rather than a primary cause of rickets. - Isolated calcium deficiency without vitamin D deficiency rarely causes the characteristic **metaphyseal changes** seen in this X-ray. *Phosphate deficiency* - **Phosphate deficiency** causes **X-linked hypophosphatemic rickets**, which is much **less common** than vitamin D deficiency rickets. - This form of rickets has similar radiological features but represents a **hereditary disorder** rather than the most common nutritional cause. *Vitamin C deficiency* - **Vitamin C deficiency** causes **scurvy**, which has distinctly different radiological findings including **metaphyseal corner fractures** and **osteoporosis**. - Scurvy does not cause the **widened growth plates** and **cupping deformities** characteristic of rickets seen in this X-ray.

Q: A 5-month-old infant, exclusively fed cow's milk, presented to the pediatrics outpatient department with a history of crying on touch. What is the most likely cause?

Scurvy. **Explanation:** The clinical presentation of an infant crying on touch (pseudoparalysis due to extreme pain) who is fed exclusively on cow's milk is a classic description of **Infantile Scurvy (Barlow’s Disease)**. **Why Scurvy is the Correct Answer:** Vitamin C (ascorbic acid) is heat-labile. While breast milk provides adequate amounts, cow’s milk contains very little Vitamin C, which is further destroyed during boiling. Vitamin C is essential for collagen synthesis; its deficiency leads to capillary fragility and **subperiosteal hemorrhage**. These hemorrhages are exquisitely painful, causing the infant to cry when touched or moved. The child often assumes a "frog-leg" position to minimize pain. **Analysis of Incorrect Options:** * **Rickets:** While common in this age group, it typically presents with skeletal deformities (craniotabes, rachitic rosary, wide wrists) and is generally painless unless associated with fractures. * **Juvenile Rheumatoid Arthritis (JRA):** This is rare in infants under 6 months of age. It presents with joint swelling and stiffness rather than generalized exquisite bone pain. * **Osteogenesis Imperfecta:** This is a genetic collagen disorder characterized by multiple fractures and blue sclera. While fractures are painful, the specific dietary history of boiled cow's milk points directly to a nutritional deficiency. **High-Yield NEET-PG Pearls:** * **Radiological Signs of Scurvy:** Look for the **White line of Fraenkel** (dense provisional calcification), **Trummerfeld zone** (scurvy line/lucent zone), **Pelkan spur**, and **Wimberger’s ring** (sclerotic margin around the epiphysis). * **First Sign:** Irritability and loss of appetite. * **Differential Diagnosis:** Always differentiate pseudoparalysis of scurvy from osteomyelitis or Polio. Scurvy will not have a fever unless a secondary infection is present.

Q: A 2-year-old boy, primarily on a milk-based diet, presents with a history of swollen, bleeding gums, lethargy, and pain while moving his limbs. What is the most likely diagnosis for this patient?

Vitamin C deficiency. **Explanation:** The clinical presentation of swollen, bleeding gums, lethargy, and limb pain in a child on a milk-based diet is classic for **Scurvy (Vitamin C deficiency)**. **Why Vitamin C deficiency is correct:** Vitamin C (ascorbic acid) is a vital cofactor for the enzyme **prolyl hydroxylase**, which is essential for collagen synthesis. Deficiency leads to defective connective tissue and capillary fragility. * **Bleeding gums:** Capillary fragility leads to mucosal hemorrhages. * **Limb pain:** This occurs due to **subperiosteal hemorrhages**, causing the child to assume a "frog-leg" position to minimize pain (pseudoparalysis). * **Dietary link:** Cow’s milk is a poor source of Vitamin C, and boiling milk further destroys the vitamin. **Why other options are incorrect:** * **Vitamin A deficiency:** Primarily presents with ocular signs (Bitot spots, xerophthalmia, night blindness) and follicular hyperkeratosis, not hemorrhagic manifestations. * **Vitamin B deficiency:** B1 (Beriberi) presents with cardiac or neurological symptoms; B2/B3 present with dermatitis or cheilosis. They do not cause subperiosteal bleeds. * **Vitamin D deficiency (Rickets):** Presents with bony deformities (rachitic rosary, bowing of legs, delayed fontanelle closure) but is typically painless and not associated with bleeding gums. **High-Yield NEET-PG Pearls:** * **Radiological signs of Scurvy:** White line of Fraenkel (dense zone of calcification), Trummerfeld zone (scurvy line/lucent zone), and Pelkan spur. * **Wimberger sign:** A thin, sclerotic ring around a radiolucent epiphysis. * **First clinical sign:** Irritability and tachypnea; the most specific sign is follicular hyperkeratosis with "corkscrew hairs."

Q: Contraindications for breast feeding are all EXCEPT:

All of the above. **Explanation:** The core concept in pediatric nutrition is that while breast milk is the gold standard, certain maternal infections and medications can pose risks to the infant, necessitating temporary or permanent cessation. * **Hepatitis B infection (Option A):** While breastfeeding is generally allowed if the infant receives the HBV vaccine and HBIG at birth, it is traditionally listed as a relative contraindication in many standard textbooks if there is a risk of cracked/bleeding nipples, as the virus can be transmitted via blood. * **Tetracycline treatment (Option B):** Tetracyclines are excreted in breast milk and can cause permanent staining of the infant's developing teeth and inhibit bone growth. Therefore, they are contraindicated during lactation. * **Acute bacterial mastitis (Option C):** In the acute phase, breastfeeding from the affected breast is often discouraged if there is significant pain or if an abscess has formed (though frequent emptying is encouraged). If the milk contains pus or high bacterial loads, it is temporarily contraindicated. Since all three conditions represent scenarios where breastfeeding is either restricted or contraindicated, **Option D (All of the above)** is the correct choice. **High-Yield Clinical Pearls for NEET-PG:** * **Absolute Contraindications (Maternal):** HIV (in developed countries), HTLV-1/2, active untreated Tuberculosis (until 2 weeks of therapy), and Galactosemia (Infant factor). * **Drug Contraindications:** Radioactive isotopes, antimetabolites, chemotherapy, and ergotamine. * **Safe in Hep B:** If the infant receives the birth dose of the Hep B vaccine and HBIG, breastfeeding is considered safe. * **Mastitis Management:** If no abscess is present, continuing breastfeeding is actually the treatment of choice to prevent stasis. However, for exam purposes, acute complications are often listed as contraindications.

Q: Wind Swept Deformity is seen in which of the following conditions?

Rickets. **Explanation:** **Windswept deformity** is a classic clinical sign of **Rickets**, characterized by the combination of **genu valgum** (knock-knee) in one leg and **genu varum** (bow-leg) in the other. This occurs because rickets leads to defective mineralization of the osteoid matrix at the growth plates, resulting in soft, "plastic" bones. Under the stress of weight-bearing and gravity, these softened long bones undergo progressive mechanical deformation, appearing as if they have been "swept" by the wind to one side. **Analysis of Options:** * **Scurvy (Vitamin C deficiency):** Characterized by defective collagen synthesis. Clinical features include subperiosteal hemorrhages, "scorbutic rosary" (angular), and pseudoparalysis, but not windswept deformities. * **Achondroplasia:** A genetic disorder of endochondral ossification leading to dwarfism. While it features genu varum (bowing), the classic "windswept" presentation is not a hallmark. * **Osteoporosis:** Involves decreased bone mass with normal mineralization. It typically presents with pathological fractures (vertebral/hip) in adults rather than the plastic bowing deformities seen in the growing skeletons of children. **High-Yield Clinical Pearls for NEET-PG:** * **Rachitic Rosary:** Found in Rickets; characterized by blunt, rounded swellings at the costochondral junctions (unlike the sharp, angular rosary in Scurvy). * **Harrison’s Sulcus:** A horizontal groove along the lower border of the thorax corresponding to the insertion of the diaphragm. * **Craniotabes:** Softening of the skull bones (earliest sign of rickets). * **Radiological Signs:** Cupping, splaying, and fraying of the metaphysis (best seen at the distal radius and ulna).

Q: What is the protein content of F-100 diet?

2.9 g/100 mL. **Explanation:** The **F-100 diet** is a therapeutic milk formula specifically designed for the **Rehabilitation Phase** (Phase 2) of management in children with Severe Acute Malnutrition (SAM). The primary goal of this phase is rapid weight gain (catch-up growth), which requires a high-calorie and high-protein intake. * **Correct Option (D):** F-100 contains **2.9 g of protein** and **100 kcal** per 100 mL. This high protein-to-energy ratio is essential to support the synthesis of new lean body mass once the child’s metabolic processes have stabilized and infections are under control. **Analysis of Incorrect Options:** * **Option A (0.9 g/100 mL):** This is the approximate protein content of **F-75**, the formula used in the **Stabilization Phase** (Phase 1). F-75 is designed to maintain basic physiological processes without overwhelming the fragile metabolism; it contains 0.9 g protein and 75 kcal per 100 mL. * **Options B & C (1.1 – 1.2 g/100 mL):** These values are closer to the protein content of standard **mature human breast milk** (approx. 1.1 g/100 mL) or standard infant formulas, which are insufficient for the rapid catch-up growth required in SAM rehabilitation. **High-Yield Clinical Pearls for NEET-PG:** * **F-75 vs. F-100:** Remember the "75" and "100" refer to the **kcal per 100 mL**. * **Transition:** Move from F-75 to F-100 only when the child regains appetite and edema starts to disappear (usually after 2–7 days). * **Electrolytes:** Both formulas are low in Sodium and high in Potassium and Magnesium, reflecting the intracellular electrolyte depletion seen in SAM. * **Iron:** F-75 contains **no iron** (to avoid promoting bacterial growth during acute infection), whereas iron is added during the F-100/Rehabilitation phase.

Question 1

Earliest sign of rickets is:

Accepted Answer

Craniotabes

Answer

Harrison's groove

Answer

Rachitic rosary

Answer

Pigeon breast

Question 2

What is the most common underlying cause responsible for the disease in which the given X-ray finding is seen?

Accepted Answer

Vitamin D deficiency

Answer

Calcium deficiency

Answer

Phosphate deficiency

Answer

Vitamin C deficiency

Question 3

A 5-month-old infant, exclusively fed cow's milk, presented to the pediatrics outpatient department with a history of crying on touch. What is the most likely cause?

Accepted Answer

Scurvy

Answer

Rickets

Answer

Juvenile Rheumatoid Arthritis (JRA)

Answer

Osteogenesis imperfecta

Question 4

A 2-year-old boy, primarily on a milk-based diet, presents with a history of swollen, bleeding gums, lethargy, and pain while moving his limbs. What is the most likely diagnosis for this patient?

Accepted Answer

Vitamin C deficiency

Answer

Vitamin A deficiency

Answer

Vitamin B deficiency

Answer

Vitamin D deficiency

Question 5

Contraindications for breast feeding are all EXCEPT:

Accepted Answer

All of the above

Answer

Hepatitis B infection of mother

Answer

Tetracycline treatment of mother

Answer

Acute bacterial mastitis

Question 6

Which of the following indicates secondary failure to respond in a child with severe malnutrition?

Accepted Answer

Failure to gain at least 5g/kg/day for 3 consecutive days during the rehabilitation phase

Answer

Failure to regain appetite by day 4

Answer

Presence of edema on day 10

Answer

Failure to gain at least 5 g/kg/day by day 10

Question 7

A 36-month-old male child appears chronically ill. He has had a succession of respiratory infections in the past 6 months. The child is underdeveloped, only 50% of ideal body weight, and exhibits marked muscle wasting. Laboratory findings include normal serum albumin but decreased hemoglobin. What is the most characteristic diagnosis for these findings?

Accepted Answer

Marasmus

Answer

Leukemia

Answer

Folate Deficiency

Answer

Kwashiorkor

Question 8

Wind Swept Deformity is seen in which of the following conditions?

Accepted Answer

Rickets

Answer

Scurvy

Answer

Achondroplasia

Answer

Osteoporosis

Question 9

What is the protein content of F-100 diet?

Accepted Answer

2.9 g/100 mL

Answer

0.9 g/100 mL

Answer

1.1 g/100 mL

Answer

1.2 g/100 mL

Question 10

Which of the following statements is true regarding the storage of expressed breast milk (EBM)?

Accepted Answer

Expressed breast milk (EBM) can be stored at room temperature for about 6 hours and in the refrigerator for 24 hours.

Answer

Expressed breast milk (EBM) can be stored at room temperature for about 24 hours and in the refrigerator for 6 days.

Answer

Expressed breast milk (EBM) can be stored at room temperature for about 18 hours and in the refrigerator for 1 month.

Answer

Expressed breast milk (EBM) can be stored at room temperature for about 6 hours and in the refrigerator for 6 days.

Pediatric Nutrition — MCQs

Pediatric Nutrition — MCQs

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