## **Core Concept**
ReSoMal (Rehydration Solution for Malnutrition) is a specially formulated oral rehydration solution designed for children with severe acute malnutrition. The solution aims to provide essential electrolytes and fluids while being gentle on the gut. Sodium (Na+) content is crucial for rehydration and correcting electrolyte imbalances.

## **Why the Correct Answer is Right**
The correct answer, . 75 mmol/L, is specifically designed to meet the needs of malnourished children. Standard oral rehydration solutions (ORS) like the WHO-ORS have 75 mEq/L of sodium. However, the reduced sodium concentration in ReSoMal helps prevent excess sodium load, which is particularly beneficial in malnourished children who may have compromised renal function and altered electrolyte balances. The lower sodium concentration supports safer rehydration.

## **Why Each Wrong Option is Incorrect**
- **Option A:**
This option suggests a sodium concentration that might be too low for effective rehydration in malnourished children, potentially leading to inadequate sodium replenishment.
- **Option B:**
This option implies a much higher sodium concentration, which could be harmful to malnourished children, potentially leading to sodium overload and complications such as hypernatremia.
- **Option D:**
This option presents another potentially too-high sodium concentration, similar to concerns with Option B, risking sodium overload.

## **Clinical Pearl / High-Yield Fact**
A critical point to remember is that the composition of ReSoMal, including its sodium content, is tailored to prevent overloading with sodium and to safely manage rehydration in malnourished children. The standard WHO oral rehydration solution contains 75 mEq/L of sodium; however, specific solutions like ReSoMal are formulated with nuances for particular patient populations.

## **Correct Answer:** . 75 mmol/L.