Pediatric Nutrition — MCQs

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?

Pediatric Nutrition Indian Medical PG Practice Questions and MCQs

Question 181: All of the following are recommendations of the Baby-Friendly Hospital initiative except?

A. Initiate breastfeeding as soon as possible
B. Encourage 4 hourly breastfeeding (Correct Answer)
C. Room-in
D. Counsel mothers on the use and risk of pacifiers and feeding bottles

Explanation: The **Baby-Friendly Hospital Initiative (BFHI)**, launched by WHO and UNICEF, is based on the **"Ten Steps to Successful Breastfeeding."** The core philosophy is to promote exclusive breastfeeding through demand-based feeding rather than rigid schedules. ### Why Option B is the Correct Answer (The Exception) The BFHI explicitly discourages scheduled feedings (e.g., every 4 hours). Instead, **Step 8** mandates **feeding on demand**. Mothers should be taught to recognize early hunger cues (rooting, sucking hands) rather than waiting for the baby to cry or for a specific time to pass. Scheduled feeding can lead to poor weight gain in the infant and decreased milk production in the mother. ### Explanation of Other Options * **Option A (Initiate breastfeeding as soon as possible):** This aligns with **Step 4**, which emphasizes immediate and sustained skin-to-skin contact, helping mothers initiate breastfeeding within the first hour of birth. * **Option C (Room-in):** This aligns with **Step 7**, which requires "rooming-in"—allowing mothers and infants to remain together 24 hours a day to facilitate bonding and demand feeding. * **Option D (Counsel on pacifiers/bottles):** This aligns with **Step 9**. Mothers must be counseled on the risks of using bottles, teats, and pacifiers, as these can lead to "nipple confusion" and reduced breast milk supply. ### High-Yield Clinical Pearls for NEET-PG * **Exclusive Breastfeeding:** Recommended for the first **6 months** (no water, no formula). * **Colostrum:** The "first vaccine," rich in IgA and lactoferrin; must not be discarded. * **Step 1 of BFHI:** Hospitals must have a written breastfeeding policy that is routinely communicated to all healthcare staff. * **Contraindications to Breastfeeding:** HIV (in developed nations), active untreated TB (until 2 weeks of treatment), and Galactosemia in the infant.

Question 182: A child presents with a frog-like position and resistance to limb movement. What is the most likely diagnosis?

A. Scurvy (Correct Answer)
B. Rickets
C. Trauma
D. Congenital dislocations

Explanation: **Explanation:** The correct answer is **Scurvy**. The "frog-like position" (pseudoparalysis) is a classic clinical sign of Vitamin C deficiency. **1. Why Scurvy is Correct:** Vitamin C is essential for collagen synthesis. Its deficiency leads to capillary fragility and defective osteoid formation. The hallmark of infantile scurvy is **subperiosteal hemorrhage**, which is extremely painful. To minimize pain caused by the stretching of the periosteum, the child assumes a "frog-leg" position—hips and knees semi-flexed and externally rotated. The child resists movement (pseudoparalysis) due to intense tenderness, though the joints themselves are typically normal. **2. Why Other Options are Incorrect:** * **Rickets:** While it causes bone pain and skeletal deformities (like bow legs or rachitic rosary), it does not typically present with the acute, severe subperiosteal pain or the specific frog-like immobilization seen in scurvy. * **Trauma:** While trauma causes pain and resistance to movement, it is usually localized to a specific site and associated with an acute event rather than a generalized nutritional posture. * **Congenital Dislocations:** Specifically Developmental Dysplasia of the Hip (DDH), this presents with limb shortening or asymmetrical skin folds, but not with the acute systemic tenderness and "pseudoparalysis" characteristic of scurvy. **3. NEET-PG High-Yield Pearls for Scurvy:** * **Radiological Signs:** Look for **Wimberger’s ring** (circular lucency around epiphysis), **Frankel’s line** (white line of dense calcification), and **Pelkan spurs**. * **Clinical Signs:** "Scorbutic rosary" (sharp/angular at the costochondral junction, unlike the smooth/rounded rosary in Rickets) and bleeding gums. * **Age Group:** Usually seen in infants aged 6–12 months fed exclusively on boiled milk (Vitamin C is heat-labile).

Question 183: Greyish discoloration and yellow fluorescence in infant teeth is caused by which of the following?

A. Phenytoin
B. Porphyria
C. Tetracycline (Correct Answer)
D. Barbiturate

Explanation: **Explanation:** The correct answer is **Tetracycline**. **Mechanism of Action:** Tetracyclines are known to cross the placental barrier and are also excreted in breast milk. They have a high affinity for calcium and form a stable **calcium-orthophosphate complex** in tissues undergoing calcification. When administered during the period of tooth development (from the second trimester of pregnancy up to 8 years of age), the drug deposits in the dentin and enamel. This results in permanent **greyish-brown or yellowish-brown discoloration** of the teeth. A hallmark diagnostic feature is that these affected teeth exhibit **bright yellow fluorescence** under ultraviolet (Wood’s lamp) light. **Analysis of Incorrect Options:** * **Phenytoin:** Primarily associated with **gingival hyperplasia** (overgrowth of gums) rather than intrinsic tooth discoloration. * **Porphyria (Congenital Erythropoietic Porphyria):** While it causes reddish-brown discoloration (erythrodontia) that fluoresces **red** under UV light, it does not cause yellow fluorescence. * **Barbiturates:** These do not have any significant association with dental discoloration or enamel defects. **High-Yield Clinical Pearls for NEET-PG:** * **Critical Period:** Avoid tetracyclines in pregnant women (after 4th month) and children under **8 years** to prevent permanent staining and enamel hypoplasia. * **Doxycycline Exception:** Recent evidence suggests that short courses of doxycycline are less likely to cause staining compared to older tetracyclines, but caution is still advised. * **Differential Diagnosis:** * **Fluorosis:** Causes chalky white patches or "mottling" of enamel. * **Biliary Atresia:** Can cause greenish discoloration (biliverdin deposition) in primary teeth.

Question 184: 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?

A. Scurvy (Correct Answer)
B. Rickets
C. Juvenile Rheumatoid Arthritis (JRA)
D. Osteogenesis imperfecta

Explanation: **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.

Question 185: 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?

A. Vitamin A deficiency
B. Vitamin B deficiency
C. Vitamin C deficiency (Correct Answer)
D. Vitamin D deficiency

Explanation: **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."

Question 186: A child presents with bleeding gums and a swollen knee. What is the most likely underlying cause?

A. Hemophilia (Correct Answer)
B. Idiopathic Thrombocytopenic Purpura (ITP)
C. Scurvy
D. Trauma

Explanation: **Explanation:** The clinical presentation of **bleeding gums** combined with a **swollen knee** (suggestive of hemarthrosis) is a classic indicator of a coagulation factor deficiency, most commonly **Hemophilia**. **1. Why Hemophilia is Correct:** Hemophilia (A or B) is characterized by a deficiency in clotting factors (VIII or IX). The hallmark of secondary hemostasis defects is bleeding into deep tissues, specifically **hemarthrosis** (bleeding into joints like the knee) and intramuscular hematomas. While mucosal bleeding like bleeding gums is more common in primary hemostasis defects, it can occur in hemophilia following minor trauma or dental procedures. The presence of a swollen joint is the "clue" that points toward a factor deficiency rather than a platelet disorder. **2. Why Other Options are Incorrect:** * **ITP:** This is a disorder of primary hemostasis (platelets). It typically presents with superficial bleeding such as petechiae, purpura, and epistaxis. It rarely, if ever, causes hemarthrosis. * **Scurvy (Vitamin C deficiency):** While Scurvy causes bleeding gums and subperiosteal hemorrhages (which can cause limb pain/pseudoparalysis), it does not typically cause true intra-articular joint swelling (hemarthrosis). * **Trauma:** While trauma can cause a swollen knee, it would not explain spontaneous or recurrent bleeding gums unless there was significant facial injury. **NEET-PG High-Yield Pearls:** * **Hemarthrosis** is the most common clinical manifestation of Hemophilia. The **knee** is the most frequently involved joint. * **Lab Profile:** Prolonged aPTT, normal PT, and normal Bleeding Time (BT). * **Target Joints:** Repeated bleeding into the same joint leads to "Hemophilic Arthropathy," resulting in joint destruction. * **Differential:** If a question mentions bleeding gums + skin petechiae, think **Platelet disorders**. If it mentions deep muscle/joint bleeds, think **Coagulation disorders**.

Question 187: Contraindications for breast feeding are all EXCEPT:

A. Hepatitis B infection of mother
B. Tetracycline treatment of mother
C. Acute bacterial mastitis
D. All of the above (Correct Answer)

Explanation: **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.

Question 188: Which of the following is a key feature in the pathophysiology of Potter sequence?

A. Maternal diabetes
B. Pulmonary hypoplasia
C. Bilateral renal agenesis (Correct Answer)
D. Oligohydramnios

Explanation: **Explanation:** **Potter Sequence** (or Potter Syndrome) is a classic constellation of physical findings resulting from severe **oligohydramnios** (low amniotic fluid) during fetal development. **Why Bilateral Renal Agenesis is the Correct Answer:** While oligohydramnios is the immediate cause of the physical deformities, **bilateral renal agenesis** is the most common and definitive underlying developmental defect that initiates the sequence. In a normal pregnancy, fetal urine is the primary contributor to amniotic fluid volume from the second trimester onwards. The absence of both kidneys leads to a total failure of urine production, resulting in profound oligohydramnios. **Analysis of Incorrect Options:** * **Maternal Diabetes (A):** This is typically associated with *polyhydramnios* (due to fetal osmotic diuresis) and anomalies like caudal regression syndrome or macrosomia, not Potter sequence. * **Pulmonary Hypoplasia (B):** This is a **consequence** of the sequence, not the primary pathophysiology. Without amniotic fluid, the lungs cannot expand, leading to fatal respiratory failure at birth. * **Oligohydramnios (D):** While this is the *mechanism* that causes the physical features, it is a clinical state resulting from the renal agenesis. In the context of "key feature of pathophysiology" for Potter Sequence, the renal defect is the primary trigger. **High-Yield Clinical Pearls for NEET-PG:** * **The "Potter Facies":** Includes flattened nose, recessed chin (micrognathia), prominent epicanthal folds, and low-set, "mushed" ears. * **Mnemonic (POTTER):** **P**ulmonary hypoplasia, **O**ligohydramnios, **T**wisted face, **T**wisted skin, **E**xtremity defects (clubfoot), **R**enal failure/agenesis. * **Most Common Cause of Death:** Pulmonary hypoplasia, not renal failure. * **Other Causes:** Besides agenesis, it can be caused by Obstructive Uropathy (e.g., Posterior Urethral Valves) or Autosomal Recessive Polycystic Kidney Disease (ARPKD).

Question 189: Which of the following indicates secondary failure to respond in a child with severe malnutrition?

A. Failure to regain appetite by day 4
B. Presence of edema on day 10
C. Failure to gain at least 5g/kg/day for 3 consecutive days during the rehabilitation phase (Correct Answer)
D. Failure to gain at least 5 g/kg/day by day 10

Explanation: In the management of Severe Acute Malnutrition (SAM), monitoring the response to treatment is critical. The WHO classifies treatment failure into two categories: **Primary Failure** (failure to stabilize) and **Secondary Failure** (failure during the rehabilitation phase). ### **Explanation of the Correct Answer** **Secondary failure to respond** occurs during the rehabilitation phase (after the child has transitioned to F-100 or catch-up formula). It is defined as the **failure to gain at least 5 g/kg/day for 3 consecutive days**. This usually indicates an underlying problem such as an undetected infection (e.g., UTI, TB, or Giardiasis), inadequate caloric intake, or psychological issues like poor feeding technique. ### **Analysis of Incorrect Options** * **Option A & D:** These are criteria for **Primary Failure to Respond**. Primary failure is suspected if the child does not regain appetite by day 4, fails to lose edema by day 10, or fails to gain at least 5 g/kg/day by day 10 of the stabilization phase. * **Option B:** The persistence of edema on **day 10** is a sign of Primary Failure. In a successful recovery, edema should typically disappear between days 5 and 9. ### **Clinical Pearls for NEET-PG** * **Weight Gain Assessment in SAM:** * **Poor:** < 5 g/kg/day (Indicates failure to respond). * **Moderate:** 5–10 g/kg/day. * **Good:** > 10 g/kg/day. * **Target Weight for Discharge:** A child is usually ready for discharge when they reach a Weight-for-Height Z-score (WHZ) > -2 and have been free of edema for at least 2 weeks. * **Refeeding Syndrome:** Watch for sudden drops in Potassium, Magnesium, and Phosphate during the initial feeding phase.

Question 190: 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?

A. Marasmus (Correct Answer)
B. Leukemia
C. Folate Deficiency
D. Kwashiorkor

Explanation: ### Explanation The clinical presentation of a 36-month-old child with severe growth failure (50% of ideal body weight), marked muscle wasting, and a "chronically ill" appearance is classic for **Marasmus**. **1. Why Marasmus is Correct:** Marasmus is a form of Protein-Energy Malnutrition (PEM) caused by a deficiency of **total calories** (both protein and carbohydrates). * **Key Diagnostic Feature:** The hallmark is **balanced starvation**, where the body utilizes its own fat and muscle stores for energy, leading to "skin and bones" appearance and severe wasting. * **Normal Serum Albumin:** Unlike Kwashiorkor, hepatic protein synthesis is preserved in Marasmus, so serum albumin levels remain normal or near-normal, and there is **no edema**. * **Infections:** Chronic malnutrition leads to secondary immunodeficiency, explaining the recurrent respiratory infections. **2. Why Incorrect Options are Wrong:** * **Kwashiorkor:** Characterized by **protein deficiency** despite adequate calorie intake. The hallmark is **hypoalbuminemia** leading to generalized edema (pitting edema), "flaky paint" dermatitis, and a fatty liver. * **Leukemia:** While it causes weight loss and infections, the primary findings would be lymphadenopathy, hepatosplenomegaly, and specific hematological abnormalities (blasts on smear) rather than isolated 50% weight loss with normal albumin. * **Folate Deficiency:** Primarily presents as macrocytic anemia. While it can cause irritability and glossitis, it does not account for the severe global muscle wasting and 50% weight deficit seen here. **3. NEET-PG High-Yield Pearls:** * **Marasmus:** "Old man's face" (due to loss of buccal fat pads), alert but irritable, severe wasting. * **Kwashiorkor:** "Moon face," "Flag sign" (alternating bands of hair color), and **edema** (the essential diagnostic feature). * **WHO Criteria:** Severe Acute Malnutrition (SAM) is defined as Weight-for-Height < -3 SD, Mid-Upper Arm Circumference (MUAC) < 11.5 cm, or the presence of bilateral pitting edema.

Practice by Chapter

Breastfeeding

Practice Questions

Infant Formula Feeding

Practice Questions

Complementary Feeding

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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

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Eating Disorders

Practice Questions

Parenteral and Enteral Nutrition

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