A 18-month-old girl with kwashiorkor (severe PEM with edema) is being initiated on nutritional rehabilitation. Which micronutrient supplementation is the drug of choice to prevent complications during the refeeding phase?

Explanation

## Micronutrient Repletion in Kwashiorkor **Key Point:** **Vitamin A supplementation (200,000 IU on day 1 and day 15)** is the priority micronutrient in severe PEM and is the drug of choice to prevent complications and mortality during the refeeding phase. ### Why Vitamin A is First-Line 1. **Mortality Reduction** - Vitamin A deficiency is near-universal in severe PEM and increases infection-related mortality by 20–30% - WHO and IAP guidelines mandate Vitamin A as the **first** micronutrient administered in severe acute malnutrition (SAM) - The two-dose regimen (day 1 and day 15) ensures adequate repletion of depleted stores 2. **Immune Function** - Vitamin A is essential for epithelial integrity, mucosal immunity, and T-cell function - Deficiency predisposes to respiratory and diarrheal infections — the leading causes of death in PEM 3. **Timing in Refeeding** - Given **before or with** feeding initiation, not after - Prevents xerophthalmia, corneal ulceration, and blindness ### Micronutrient Priority Sequence (WHO/IAP) | Micronutrient | Dose | Timing | Rationale | |---|---|---|---| | **Vitamin A** | 200,000 IU day 1, day 15 | Before/with feeding | Mortality reduction, immune function | | **Zinc** | 2 mg/kg/day × 10 days | Start with feeding | Protein synthesis, diarrhea control | | **Iron** | 3–6 mg/kg/day | **DELAYED** (week 2–4) | Risk of oxidative stress if given early | | **Vitamin D** | 400–800 IU/day | Maintenance phase | Lower priority than Vitamin A and Zinc | ### Why the Other Options Are Incorrect - **Iron (Option A):** Iron must be **delayed 2–4 weeks** in SAM. Early iron supplementation in the setting of depleted antioxidant defenses (low vitamin E, selenium, glutathione) triggers free radical damage and worsens outcomes. It is also contraindicated in the presence of active infection. - **Zinc (Option B):** Zinc is the **second** priority micronutrient and is started with feeding, but it is not the drug of choice for preventing complications — Vitamin A takes precedence per WHO/IAP guidelines. - **Vitamin D (Option D):** Vitamin D supplementation is a maintenance-phase consideration and is not the priority micronutrient in the acute refeeding phase of kwashiorkor. **Clinical Pearl:** Vitamin A is fat-soluble; absorption improves with dietary fat. Ensuring adequate fat intake during refeeding maximizes Vitamin A bioavailability and efficacy. **High-Yield:** The established WHO/IAP micronutrient priority sequence in SAM is: **Vitamin A → Zinc → Iron** (iron delayed). Vitamin A is always given first due to its proven mortality-reduction benefit. [cite: WHO Guidelines for the Management of Severe Acute Malnutrition, 2013; IAP Nutrition Guidelines; Park's Textbook of Preventive and Social Medicine, 26th ed., Ch. 5]