Pediatric Nutrition — MCQs

Pediatric Nutrition Indian Medical PG Practice Questions and MCQs

Question 61: Which of the following is NOT a contraindication to DPT vaccination?

A. History of anaphylaxis to a previous dose
B. Progressive neurologic illness
C. Fever (Correct Answer)
D. Encephalopathy within 7 days of a previous dose

Explanation: In pediatric immunization, distinguishing between **true contraindications** and **false contraindications** is a high-yield topic for NEET-PG. ### **Why Fever is the Correct Answer** **Fever** (mild to moderate) or a minor acute illness (e.g., common cold, diarrhea) is a **false contraindication** for DPT vaccination. According to WHO and IAP guidelines, vaccines should not be delayed for minor illnesses, as this leads to missed opportunities for immunization. Only a severe, life-threatening acute illness would warrant deferral until the child recovers. ### **Analysis of Incorrect Options (True Contraindications)** The following are absolute contraindications to the Pertussis component of the DPT vaccine: * **History of Anaphylaxis (Option A):** Any immediate severe allergic reaction to a prior dose or vaccine component is an absolute contraindication to further doses. * **Progressive Neurologic Illness (Option B):** Conditions such as uncontrolled epilepsy, infantile spasms, or progressive encephalopathy require deferring the pertussis vaccine until the neurologic status is stabilized. * **Encephalopathy (Option D):** Any encephalopathy (e.g., coma, prolonged seizures) occurring within 7 days of a previous DPT dose, not attributable to another cause, is a contraindication. ### **High-Yield Clinical Pearls for NEET-PG** * **DT vs. DPT:** If a child has a contraindication to the Pertussis component, the immunization series should be completed using the **DT (Diphtheria and Tetanus)** vaccine. * **Precautions (Not Contraindications):** A history of febrile seizures, a family history of seizures, or stable neurologic conditions (like well-controlled cerebral palsy) are **not** contraindications. * **The "7-Day Rule":** Always remember the 7-day window for encephalopathy specifically linked to the Pertussis fraction.

Question 62: Breast milk can be stored in a refrigerator for how many hours?

A. 12 hours
B. 24 hours (Correct Answer)
C. 36 hours
D. 48 hours

Explanation: **Explanation:** The storage of expressed breast milk (EBM) is a high-yield topic in Pediatric Nutrition, focusing on maintaining the milk’s immunological properties and preventing bacterial overgrowth. **Why 24 hours is correct:** According to standard pediatric guidelines (including IAP and WHO recommendations adapted for various clinical settings), expressed breast milk can be safely stored in a **refrigerator (at 4°C)** for up to **24 hours** in a hospital or resource-limited setting to ensure maximum safety and nutritional integrity. While some international guidelines (like the CDC) suggest longer durations for home use, for the purpose of medical examinations like NEET-PG, 24 hours is the established standard for refrigerated storage. **Analysis of Incorrect Options:** * **A. 12 hours:** This is too short. EBM is remarkably stable due to its high concentration of lysozymes and lactoferrin, which inhibit bacterial growth for longer than 12 hours. * **C & D. 36 and 48 hours:** Storing milk for this duration in a standard refrigerator increases the risk of lipase-driven fat degradation (leading to a soapy taste) and a gradual decline in Vitamin C and protective antioxidant levels. **High-Yield Clinical Pearls for NEET-PG:** * **Room Temperature (25°C):** EBM remains stable for **4 to 6 hours**. In hot tropical climates, 4 hours is the preferred limit. * **Deep Freezer (-20°C):** EBM can be stored for **3 to 6 months**. * **Thawing:** Never microwave EBM as it creates "hot spots" and destroys heat-sensitive antibodies. Thaw it overnight in the fridge or under running warm water. * **Colostrum:** It is the "first vaccine," rich in IgA and lactoferrin, and should never be discarded.

Question 63: What is a disadvantage of elemental diets in children?

A. Hypertonic dehydration
B. Lower caloric input
C. Dumping syndrome (Correct Answer)
D. High nitrogen input

Explanation: **Explanation:** **Elemental diets** consist of pre-digested nutrients, primarily free amino acids, simple sugars (glucose/maltodextrin), and minimal fats. **Why Dumping Syndrome is the Correct Answer:** Elemental diets are inherently **hyperosmolar** because they contain a high concentration of small particles (monosaccharides and free amino acids). When these hyperosmolar solutions enter the small intestine rapidly—especially via bolus enteral feeding—they cause a massive osmotic shift of fluid from the intravascular space into the intestinal lumen. This leads to intestinal distension and rapid transit, manifesting as **Dumping Syndrome** (nausea, cramping, diarrhea, and vasomotor symptoms like tachycardia). **Analysis of Incorrect Options:** * **A. Hypertonic dehydration:** While elemental diets are hyperosmolar, they are usually administered with adequate free water or at controlled rates to prevent systemic dehydration. Dumping syndrome is the more direct and common gastrointestinal complication. * **B. Lower caloric input:** Elemental diets are actually designed to be calorie-dense and highly absorbable, making them effective for children with malabsorption. * **C. High nitrogen input:** These diets provide nitrogen in the form of amino acids to meet growth requirements; however, this is a therapeutic goal, not a clinical "disadvantage" or complication. **NEET-PG High-Yield Pearls:** * **Indications:** Elemental diets are used in Short Bowel Syndrome, severe Eosinophilic Esophagitis (EoE), and intractable malabsorption. * **Palatability:** A major practical disadvantage is **poor palatability** (bitter taste due to amino acids), often requiring nasogastric tube administration. * **Prevention:** To minimize dumping syndrome, elemental diets should be started at a low concentration and administered via **continuous infusion** rather than bolus feeds.

Question 64: All the following are features of marasmus except?

A. Good appetite
B. Less prone for infections
C. Edema (Correct Answer)
D. Recovers early

Explanation: **Explanation:** Protein-Energy Malnutrition (PEM) is primarily classified into two types: **Marasmus** and **Kwashiorkor**. The presence or absence of **edema** is the cardinal clinical feature used to differentiate between them. **Why "Edema" is the Correct Answer:** Edema is the hallmark of **Kwashiorkor**, not Marasmus. In Kwashiorkor, severe protein deficiency leads to hypoalbuminemia, which decreases plasma oncotic pressure, causing fluid to leak into the interstitial spaces (pitting edema). Marasmus, conversely, is a state of balanced starvation (deficiency of both calories and protein), where albumin levels remain relatively preserved until the terminal stages; hence, edema is absent. **Analysis of Other Options:** * **A. Good appetite:** Marasmic children are typically ravenous and have a good appetite because their body is in a state of extreme energy deficit. In contrast, children with Kwashiorkor often suffer from anorexia (poor appetite). * **B. Less prone for infections:** While all malnourished children are immunocompromised, Marasmic children are relatively less prone to life-threatening acute infections compared to those with Kwashiorkor, who have severe immune dysfunction and skin integrity loss. * **C. Recovers early:** Marasmus generally has a better prognosis and a faster recovery rate once nutritional rehabilitation begins, whereas Kwashiorkor has a higher mortality rate due to metabolic complications. **High-Yield Clinical Pearls for NEET-PG:** * **Marasmus:** Characterized by "Skin and Bones" appearance, loss of subcutaneous fat (monkey facies/old man appearance), and prominent ribs. * **Kwashiorkor:** Characterized by "Flaky paint" dermatosis, "Flag sign" (banded hair discoloration), and a "Moon facies" due to edema. * **The "Sugar Baby":** A term sometimes used for Kwashiorkor patients who appear plump due to edema but are severely protein-deficient.

Question 65: What is the earlier manifestation of Rickets?

A. Craniotabes (Correct Answer)
B. Rashitic rosary
C. Harrison groove
D. Pigeon chest

Explanation: **Explanation:** **Craniotabes** is the earliest clinical sign of nutritional rickets, typically appearing in infants between **3 to 6 months** of age. It is characterized by the softening of the skull bones (usually the occipital and parietal bones), which gives a "ping-pong ball" sensation when pressure is applied. This occurs because the skull is the most rapidly growing part of the skeleton during early infancy, making it highly susceptible to the impaired mineralization seen in Vitamin D deficiency. **Analysis of Incorrect Options:** * **B. Rachitic Rosary:** This refers to the palpable/visible enlargement of the costochondral junctions. While a classic sign, it typically appears after craniotabes as the infant grows and the rib cage undergoes more rapid expansion. * **C. Harrison’s Groove:** This is a horizontal depression along the lower border of the chest at the insertion of the diaphragm. It is a secondary deformity caused by the inward pull of the diaphragm on softened ribs, usually seen in more advanced or chronic cases. * **D. Pigeon Chest (Pectus Carinatum):** This is a late structural deformity of the chest wall resulting from chronic softening and subsequent outward protrusion of the sternum. **High-Yield Clinical Pearls for NEET-PG:** * **Sequence of signs:** Craniotabes (earliest) → Rachitic Rosary → Wide epiphyses (wrists/ankles) → Bowing of legs (once the child starts weight-bearing). * **Radiological sign:** The earliest radiological sign of rickets is **fraying and cupping** of the distal ends of the radius and ulna. * **Biochemical hallmark:** Low/Normal Calcium, **Low Phosphate**, and **Elevated Alkaline Phosphatase (ALP)**. ALP is the most sensitive biochemical marker for monitoring treatment response. * **Note:** Craniotabes can be physiological in newborns; it is only pathological for rickets if it persists beyond the neonatal period.

Question 66: Which type of milk has the minimum fat content?

A. Human milk (Correct Answer)
B. Cow milk
C. Goat milk
D. Buffalo milk

Explanation: **Explanation:** The fat content in milk varies significantly across species, primarily to meet the specific metabolic and growth requirements of their offspring. Among the options provided, **Human milk** contains the lowest concentration of fat, typically ranging between **3.5 to 4.5 g/dL**. **Why Human Milk is the Correct Answer:** While human milk is rich in essential fatty acids (like DHA and ARA) and cholesterol necessary for brain development, its total lipid concentration is lower than that of common dairy animals. In human milk, fat provides about 50% of the total calories, but the absolute quantity is less than that found in cow, goat, or buffalo milk. **Analysis of Incorrect Options:** * **Cow Milk:** Contains approximately **3.5 to 4.8 g/dL** of fat. While similar to human milk, it is generally slightly higher and contains more saturated fats and less essential fatty acids. * **Goat Milk:** Contains approximately **4.0 to 5.0 g/dL** of fat. The fat globules in goat milk are smaller, making it easier to digest for some, but the total content is higher than human milk. * **Buffalo Milk:** Contains the highest fat content among the options, approximately **6.5 to 8.0 g/dL**. This high caloric density is why buffalo milk is often used for commercial cream and butter production. **High-Yield NEET-PG Pearls:** 1. **Protein Content:** Human milk has the *lowest* protein (1.1 g/dL) compared to cow milk (3.3 g/dL). This prevents solute overload on immature infant kidneys. 2. **Carbohydrate Content:** Human milk has the *highest* lactose content (7 g/dL) compared to cow milk (4.5 g/dL), which aids in calcium absorption and brain development. 3. **Iron:** Although both human and cow milk are low in iron, the **bioavailability** of iron in human milk is much higher (50-70%) compared to cow milk (5-10%). 4. **Whey:Casein Ratio:** Human milk is 60:40 (easy to digest), while cow milk is 20:80 (harder to digest).

Question 67: A child has been diagnosed with cow milk allergy. Which of the following is the next recommended management strategy?

A. Partial or extensively hydrolysed diet
B. Soy-based diet (Correct Answer)
C. Amino acid-based formula
D. None of the above

Explanation: **Explanation:** Cow’s Milk Protein Allergy (CMPA) is the most common food allergy in infants. The management strategy depends on the child's age, severity of symptoms, and cost-effectiveness. **Why Soy-based diet is the correct answer:** According to standard pediatric guidelines (including IAP and Nelson), for infants **older than 6 months** who do not have severe or life-threatening symptoms (like anaphylaxis), a **Soy-based formula** is often the first-line alternative. It is palatable, significantly cheaper than hydrolyzed formulas, and most children with CMPA tolerate soy protein well. It is a high-yield management step in resource-limited settings or for families where cost is a concern. **Analysis of Incorrect Options:** * **A. Partial or extensively hydrolysed diet:** While **Extensively Hydrolyzed Formulas (eHF)** are the gold standard for infants <6 months, "Partial" hydrolysates have no role in treating established CMPA (they are only for prevention in high-risk infants). Since the option combines both, it is less specific than soy for a general management question. * **C. Amino acid-based formula:** These are reserved for severe cases (anaphylaxis, FPIES, or failure to thrive) or when the child fails to respond to eHF/Soy. They are extremely expensive and not the immediate "next" step for a routine diagnosis. **NEET-PG High-Yield Pearls:** * **Age Factor:** Soy formula is contraindicated in infants **<6 months** due to high phytate and phytoestrogen content; for these infants, eHF is the first choice. * **Cross-reactivity:** Approximately 10-15% of children with CMPA may also be allergic to soy. * **Goat/Sheep Milk:** Never use these as alternatives; they have high cross-reactivity (up to 90%) and can cause solute overload. * **Diagnosis:** The "Gold Standard" for diagnosis is the **Oral Food Challenge**, though clinically, an elimination diet followed by a re-challenge is often used.

Question 68: All are true about marasmus except:

A. Normal albumin levels
B. Severe wasting of muscles
C. Edema (Correct Answer)
D. Depleted subcutaneous fat

Explanation: **Explanation:** Protein-Energy Malnutrition (PEM) is primarily classified into two distinct clinical syndromes: **Marasmus** and **Kwashiorkor**. The key to answering this question lies in understanding that **edema is the hallmark clinical feature of Kwashiorkor, not Marasmus.** 1. **Why Edema is the Correct Answer:** Marasmus is a state of "balanced" starvation caused by a chronic deficiency of both calories and proteins. In Marasmus, the body adapts to the low intake, and hepatic protein synthesis is relatively preserved. Therefore, serum albumin levels remain near normal, maintaining oncotic pressure and preventing edema. In contrast, Kwashiorkor is characterized by hypoalbuminemia, which leads to generalized edema (pitting edema). 2. **Analysis of Other Options:** * **Normal albumin levels (Option A):** True for Marasmus. Unlike Kwashiorkor, the liver continues to produce albumin until the very late stages. * **Severe wasting of muscles (Option B):** True. In Marasmus, the body catabolizes muscle protein for energy, leading to a "skin and bones" appearance. * **Depleted subcutaneous fat (Option D):** True. The lack of caloric intake leads to the total loss of subcutaneous fat, resulting in the characteristic "Old Man/Monkey facies." **High-Yield Clinical Pearls for NEET-PG:** * **Marasmus:** "Dry" PEM, alert but irritable, prominent ribs, baggy pants appearance (due to loss of gluteal fat). * **Kwashiorkor:** "Wet" PEM, presence of edema, "Flaky paint" dermatosis, "Flag sign" in hair, and a fatty liver (hepatomegaly). * **Marasmic-Kwashiorkor:** A transition state where a child with marasmus develops edema due to acute protein deficiency or infection.

Question 69: Proteins provide _______ Kcal energy per gram?

A. 2
B. 4 (Correct Answer)
C. 6
D. 9

Explanation: **Explanation:** The caloric value of macronutrients is a fundamental concept in pediatric nutrition and metabolic health. Energy density is defined as the amount of energy (kilocalories) provided per gram of a specific nutrient. **1. Why Option B is Correct:** Proteins are essential for growth, tissue repair, and enzyme production in children. When oxidized in the body, **1 gram of protein yields approximately 4 Kcal** of energy. This is identical to the physiological fuel value of carbohydrates. In clinical practice, calculating the protein-to-calorie ratio is vital for managing conditions like Protein-Energy Malnutrition (PEM). **2. Why Other Options are Incorrect:** * **Option A (2 Kcal):** This value is too low for any primary macronutrient. However, some sugar alcohols (polyols) or certain types of dietary fiber may provide roughly this amount of energy. * **Option C (6 Kcal):** There is no primary macronutrient that provides 6 Kcal/g. * **Option D (9 Kcal):** This is the energy density of **Fats**. Lipids are the most energy-dense macronutrient, providing 9 Kcal/g, which is why they are the primary storage form of energy in the body. **High-Yield Clinical Pearls for NEET-PG:** * **Atwater Factors:** The standard values used are 4-4-9 (Carbohydrates: 4, Protein: 4, Fat: 9). * **Alcohol:** Provides **7 Kcal/g** (often asked as a "distractor" in nutrition questions). * **Respiratory Quotient (RQ):** Remember that the RQ for Carbohydrates is 1.0, for Proteins is ~0.8, and for Fats is 0.7. * **Protein Requirement:** In infants, the protein requirement is highest during the first few months of life (approx. 1.1 g/kg/day) to support rapid growth.

Question 70: Breastfed babies are protected from some gastrointestinal infections due to the presence of which component in mother's milk?

A. Immunoglobulin A (IgA) (Correct Answer)
B. Vitamin D
C. Long chain omega-3 fatty acids
D. Immunoglobulin E (IgE)

Explanation: **Explanation:** The correct answer is **Immunoglobulin A (IgA)**, specifically **Secretory IgA (sIgA)**. This is the most abundant immunoglobulin in breast milk and colostrum. Unlike other antibodies, sIgA is resistant to proteolytic enzymes in the infant’s digestive tract. It acts by "mucosal coating"—binding to bacteria and viruses (like *E. coli*, *Vibrio cholerae*, and Rotavirus) in the gut lumen, preventing them from adhering to and penetrating the intestinal epithelium. This provides a crucial first line of defense while the infant’s own immune system is maturing. **Analysis of Incorrect Options:** * **Vitamin D:** Breast milk is notoriously **deficient** in Vitamin D. Exclusively breastfed infants require external supplementation (400 IU/day) to prevent rickets. * **Long-chain omega-3 fatty acids (DHA/ARA):** These are vital for retinal development and neurocognitive growth, but they do not provide direct immunological protection against infections. * **Immunoglobulin E (IgE):** IgE is involved in Type I hypersensitivity (allergic) reactions and defense against helminthic parasites. It is not a significant protective component of breast milk. **High-Yield Clinical Pearls for NEET-PG:** * **Bifidus Factor:** A carbohydrate in breast milk that promotes the growth of *Lactobacillus bifidus*, maintaining an acidic gut pH that inhibits pathogenic growth. * **Lactoferrin:** An iron-binding protein that inhibits siderophilic (iron-loving) bacteria like *E. coli* by depriving them of iron. * **Lysozyme:** An enzyme in milk that kills bacteria by disrupting their cell walls. * **Comparison:** Cow’s milk contains more protein (mostly casein) and minerals, but breast milk has more carbohydrates (lactose) and essential fatty acids.

Practice by Chapter

Breastfeeding

Practice Questions

Infant Formula Feeding

Practice Questions

Complementary Feeding

Practice Questions

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

Practice Questions

Eating Disorders

Practice Questions

Parenteral and Enteral Nutrition

Practice Questions

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