Pediatric Nutritional Support — MCQs
Deficiency of which element is specifically linked to the syndrome of growth failure, anemia, and hypogonadism?
Compared to a pregnant female, a lactating female would require a higher level of nutrient supplementation for which of the following?
A patient presents in coma for 20 days, what will be the best way to give him nutrition?
What is the maintenance fluid requirement in a 6 kg child ?
A 5-year-old child is having acute liver failure. Which one of the following criteria is not included in the King's College criteria?
A 12 kg child with diarrhoea and some dehydration: based on WHO guidelines, how much fluid should be replaced in the first 4 hours?
In pediatrics, differential diagnoses for acute appendicitis include all EXCEPT:
Fracture of the femur in young children (2-5 years) is typically treated by:
At what rate should dopamine be administered for inotropic support in a severely dehydrated child?
At what age does the birth length double: UPSC 07; FMGE 10, 11
Pediatric Nutritional Support Indian Medical PG Practice Questions and MCQs
Question 1: Deficiency of which element is specifically linked to the syndrome of growth failure, anemia, and hypogonadism?
- A. Calcium
- B. Copper
- C. Zinc (Correct Answer)
- D. Magnesium
Explanation: ***Zinc*** - **Zinc deficiency** is classically associated with **growth retardation**, **anemia**, **hypogonadism**, and impaired immune function due to its role in numerous enzymatic processes and DNA synthesis. - It plays a crucial role in **cellular growth**, development, and endocrine function, making its deficiency particularly impactful on these systems. *Calcium* - **Calcium deficiency** primarily leads to **bone demineralization** (osteoporosis or osteomalacia), tetany, and muscle cramps. - While essential for growth, it is not specifically linked to the triad of **anemia** and **hypogonadism** in the same manner as zinc. *Copper* - **Copper deficiency** can cause **anemia** (microcytic, unresponsive to iron), **neurological dysfunction** (myelopathy), and impaired immune function. - However, it is not typically associated with prominent **growth failure** and **hypogonadism** as a primary triad of symptoms. *Magnesium* - **Magnesium deficiency** can lead to **neuromuscular hyperexcitability** (tetany, spasms), cardiac arrhythmias, and fatigue. - It does not commonly present with the distinct combination of **growth failure**, **anemia**, and **hypogonadism**.
Question 2: Compared to a pregnant female, a lactating female would require a higher level of nutrient supplementation for which of the following?
- A. Calcium (Correct Answer)
- B. Folic acid
- C. Iron
- D. Vitamin A
Explanation: ***Calcium*** - **Lactating women** require higher calcium intake compared to pregnant women due to significant calcium transfer into **breast milk** for infant bone development. - This increased demand helps maintain maternal bone density and ensures adequate calcium supply for the baby. *Folic acid* - **Folic acid** is critically important during **pregnancy** to prevent neural tube defects, with supplementation typically decreasing postpartum. - While still necessary, the daily recommended intake for lactating women is generally lower than during pregnancy. *Iron* - **Iron requirements** are highest during **pregnancy** to support increased maternal blood volume and fetal development. - In lactating women, iron needs often decrease postpartum, especially if there was minimal blood loss during delivery and menstruation has not yet resumed. *Vitamin A* - While **Vitamin A** is important for both pregnant and lactating women, the recommended intake for pregnant women tends to be slightly higher, especially for **fetal organ development**. - Excessive vitamin A can be teratogenic during pregnancy, so supplementation needs careful monitoring in both states.
Question 3: A patient presents in coma for 20 days, what will be the best way to give him nutrition?
- A. Ryle's tube feeding (Correct Answer)
- B. Feeding via jejunostomy
- C. Parenteral nutrition
- D. Oral feeding
Explanation: ***Ryle's tube feeding*** - A **Ryle's tube (nasogastric tube)** is the most appropriate method for enteral feeding in a patient who has been in coma for **20 days (~3 weeks)**. - **Current guidelines** recommend NG tube feeding for durations up to **4-6 weeks**, making it suitable for this patient's timeline. - NG tube placement is **non-invasive, quick to establish**, and provides effective enteral nutrition while the patient's neurological status is being assessed and managed. - The gastrointestinal tract is functioning (no contraindication mentioned), making enteral feeding via NG tube the preferred route following the principle: **"If the gut works, use it."** - Proper positioning (head elevation 30-45°) and monitoring can minimize aspiration risk in comatose patients. *Feeding via jejunostomy* - **Jejunostomy** or PEG tube placement is considered for **long-term feeding beyond 4-6 weeks**. - At 20 days, it is **premature** to proceed with a surgical/endoscopic procedure for feeding access unless there are specific indications (recurrent aspiration despite NG feeding, NG tube intolerance, anticipated prolonged need beyond 6 weeks). - Jejunostomy requires a surgical procedure with associated risks and is reserved for patients clearly requiring extended nutritional support. *Parenteral nutrition* - **Parenteral nutrition** (intravenous feeding) is indicated when the gastrointestinal tract is **non-functional** or enteral access is impossible. - Since the question doesn't mention GI dysfunction, enteral feeding is preferred as it maintains gut integrity, is more physiological, safer, and more cost-effective. - Parenteral nutrition carries risks of catheter-related infections, metabolic complications, and gut mucosal atrophy. *Oral feeding* - **Oral feeding** is absolutely contraindicated in a comatose patient due to absent protective airway reflexes and extremely high risk of **aspiration pneumonia**. - A patient in coma cannot safely swallow and protect their airway during oral intake.
Question 4: What is the maintenance fluid requirement in a 6 kg child ?
- A. 240 ml/day
- B. 600 ml/day (Correct Answer)
- C. 300 ml/day
- D. 1200 ml/day
Explanation: **600 ml/day** - The **Holliday-Segar formula** is used to calculate maintenance fluid requirements. For the first 10 kg of body weight, the requirement is 100 ml/kg/day. - For a 6 kg child, the calculation is 6 kg * 100 ml/kg/day = **600 ml/day**. *240 ml/day* - This value is significantly **lower** than the recommended maintenance fluid for a 6 kg child, which would lead to **dehydration**. - It does not align with the standard Holliday-Segar formula for this weight. *300 ml/day* - This amount is **insufficient** for a 6 kg child's daily maintenance fluid needs and would risk **hypovolemia**. - It represents roughly half of the calculated requirement based on standard pediatric guidelines. *1200 ml/day* - This volume is significantly **higher** than the maintenance fluid requirement for a 6 kg child and could lead to **fluid overload** and hyponatremia. - This calculation might be appropriate for a much heavier child or in situations of increased fluid loss.
Question 5: A 5-year-old child is having acute liver failure. Which one of the following criteria is not included in the King's College criteria?
- A. Age < 11 years (Correct Answer)
- B. INR > 6.5
- C. Jaundice < 7 days before development of encephalopathy
- D. Bilirubin > 300 mmol/L
Explanation: ***Age < 11 years*** - Age is **NOT included** in the original King's College criteria for acute liver failure - King's College criteria are based on **biochemical parameters** (INR, bilirubin, pH, creatinine) and **clinical factors** (encephalopathy grade, jaundice-to-encephalopathy interval), not patient age - While **younger age may be a prognostic factor** in pediatric liver failure, it is not part of the formal King's College criteria used to predict poor prognosis or need for transplantation *INR > 6.5* - An **elevated INR > 6.5** (or PT > 100 seconds) is a **key criterion** in King's College criteria for non-paracetamol acute liver failure - Indicates severe **coagulopathy** and hepatic synthetic dysfunction - One of the most important predictors of poor outcome *Jaundice < 7 days before development of encephalopathy* - The **interval from jaundice to encephalopathy** is explicitly included in King's College criteria for non-paracetamol ALF - Jaundice to encephalopathy < 7 days = hyperacute (relatively better prognosis) - Jaundice to encephalopathy > 7 days = subacute (worse prognosis, indicates need for transplant) - This temporal relationship is a **critical prognostic indicator** *Bilirubin > 300 mmol/L* - **Serum bilirubin > 300 μmol/L** (17.5 mg/dL) is explicitly included in King's College criteria for non-paracetamol ALF - Indicates severe **cholestasis** and hepatocellular dysfunction - Part of the multi-parameter assessment for transplant listing
Question 6: A 12 kg child with diarrhoea and some dehydration: based on WHO guidelines, how much fluid should be replaced in the first 4 hours?
- A. 0-400 ml
- B. 400-800 ml
- C. 800-1200 ml (Correct Answer)
- D. 1200-1600 ml
Explanation: ***800-1200 ml*** - For a child weighing **12 kg** with **some dehydration** due to diarrhea, WHO Plan B recommends **75 mL/kg** over 4 hours. - Therefore, 12 kg × 75 mL/kg = **900 mL**, which falls within this range. - This range allows for slight variations in clinical practice while staying close to the WHO standard guideline. *0-400 ml* - This range is significantly **too low** for a 12 kg child with some dehydration, as it would not adequately address the fluid deficit. - Inadequate fluid replacement can lead to worsening dehydration and its associated complications, such as **persistent signs of dehydration or progression to severe dehydration**. *400-800 ml* - While higher than the lowest option, **400-800 mL** is still generally insufficient for a 12 kg child needing rehydration over 4 hours per WHO Plan B. - This amount would only partially correct the fluid deficit, potentially delaying recovery and necessitating further interventions. *1200-1600 ml* - This range is **excessive** for WHO Plan B rehydration in a 12 kg child over 4 hours, potentially leading to **fluid overload**. - While adequate rehydration is crucial, administering significantly more than 75 mL/kg can increase the risk of complications, especially in children with underlying cardiac or renal conditions.
Question 7: In pediatrics, differential diagnoses for acute appendicitis include all EXCEPT:
- A. Gastroenteritis
- B. Volvulus
- C. Trauma (Correct Answer)
- D. Torsion
Explanation: ***Trauma*** - While trauma can cause abdominal pain, it is **not typically a differential diagnosis for acute appendicitis** as the mechanism of injury and clinical presentation are distinct. - Appendicitis involves inflammation of the appendix, whereas trauma involves direct injury to abdominal organs or tissues. *Gastroenteritis* - **Gastroenteritis** can present with diffuse abdominal pain, nausea, vomiting, and fever, mimicking early symptoms of appendicitis. - However, appendicitis pain often localizes to the right lower quadrant, unlike the more generalized pain of gastroenteritis. *Volvulus* - **Volvulus**, especially in infants and young children, presents with severe, colicky abdominal pain, bilious vomiting, and signs of intestinal obstruction, which can overlap with appendicitis symptoms. - Unlike appendicitis, volvulus involves the twisting of a bowel loop, leading to vascular compromise and often requiring urgent surgical intervention. *Torsion* - **Ovarian torsion** or **testicular torsion** can cause acute, severe unilateral lower abdominal or pelvic pain, mimicking appendicitis due to proximity and similar pain presentation in children. - These conditions are distinct from appendicitis as they involve the twisting of adnexal structures or testes, leading to ischemia.
Question 8: Fracture of the femur in young children (2-5 years) is typically treated by:
- A. Gallow's splint
- B. Open reduction (surgical intervention)
- C. Closed reduction & splintage (Correct Answer)
- D. Intramedullary nailing (surgical fixation)
Explanation: ***Closed reduction & splintage*** - In young children (2-5 years), **femur fractures** are often treated non-operatively with **closed reduction** and immediate application of a **hip spica cast** or other splintage. - This approach takes advantage of the excellent **bone remodeling potential** in young children, allowing for good functional outcomes. *Open reduction (surgical intervention)* - **Open reduction** is generally reserved for open fractures, - It is also indicated for fractures with associated neurovascular injury, compartment syndrome, or in older children where non-operative management has failed. *Gallow's splint* - The **Gallow's splint** (also known as Bryant's traction) involves suspending both legs vertically, and is typically used for **femur fractures in infants younger than 1 year** due to the risk of vascular compromise or compartment syndrome in older or heavier children. - It is not the primary treatment for children aged 2-5 years. *Intramedullary nailing (surgical fixation)* - **Intramedullary nailing** is a surgical option, usually considered for **femur fractures in older children** (typically 6 years and above) or adolescents. - It provides stable fixation but is generally avoided in very young children due to potential damage to the **growth plates** or complications related to implant size.
Question 9: At what rate should dopamine be administered for inotropic support in a severely dehydrated child?
- A. 0.1-0.5 microgram/kg/min
- B. 1-5 microgram/kg/min (Correct Answer)
- C. 1-5 mg/kg/min
- D. 10-15 mg/kg/min
Explanation: ***1-5 microgram/kg/min*** - This dosage range of **dopamine** primarily targets **beta-1 adrenergic receptors**, leading to **increased myocardial contractility** (inotropic effect) and improved cardiac output. - It is appropriate for managing **hypotension** and poor perfusion in a severely dehydrated child after initial **fluid resuscitation** has been attempted but was insufficient. *0.1-0.5 microgram/kg/min* - This very low dose range of dopamine primarily stimulates **dopaminergic receptors** in the renal and mesenteric vascular beds. - Its main effect is **vasodilation** in these areas, which increases blood flow to the kidneys and gut, but it provides minimal to no **inotropic support**. *1-5 mg/kg/min* - This dosage is significantly too high, as it is in milligrams rather than micrograms. - Administering dopamine at this rate would lead to severe **toxicity**, including profound **tachycardia**, ventricular arrhythmias, and extreme **vasoconstriction**. *10-15 mg/kg/min* - This dopamine dosage is also excessively high, again due to being in milligrams per minute rather than micrograms per minute. - Such a dose would be **lethal**, causing catastrophic cardiovascular collapse due to overwhelming **alpha-adrenergic stimulation** and severe arrhythmias.
Question 10: At what age does the birth length double: UPSC 07; FMGE 10, 11
- A. 1 year
- B. 4 years (Correct Answer)
- C. 3 years
- D. 2 years
Explanation: ***4 years*** - Birth length typically doubles by the age of **4 years**. - At birth, the average length is about 50 cm, so doubling means reaching approximately **100 cm** by 4 years of age. *1 year* - By 1 year of age, a child's birth length typically increases by about **50%**, reaching approximately 75 cm. - While significant growth occurs, it does not usually double the birth length. *3 years* - By 3 years of age, a child's height is usually around **90-95 cm**. - This is a substantial gain but generally still falls short of exactly doubling the birth length. *2 years* - At 2 years of age, a child's birth length is approximately **85-88 cm**. - This represents a significant increase, but it is not the age at which birth length typically doubles.
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