## **Core Concept**
The Parkland formula is used to calculate the amount of fluid required for resuscitation in burn patients. It is based on the percentage of total body surface area (TBSA) burned and the patient's weight. The formula is: 4 mL × weight (in kg) × %TBSA burned.

## **Why the Correct Answer is Right**
For a 70 kg female with 50% burns, the total fluid required in the first 24 hours according to the Parkland formula is 4 mL × 70 kg × 50% = 14,000 mL. Half of this volume is administered in the first 8 hours, and the other half over the next 16 hours. Therefore, in the first 8 hours, the patient requires 14,000 mL / 2 = 7,000 mL.

## **Why Each Wrong Option is Incorrect**
- **Option A:** 3,500 mL is half of 7,000 mL, which is incorrect because it represents the amount for 25% burns (4 mL × 70 kg × 25% = 7,000 mL, and half of it is 3,500 mL), not 50% burns.
- **Option B:** 10,000 mL seems like an arbitrary increase and does not follow the Parkland formula calculation for 50% burns.
- **Option D:** 14,000 mL is the total amount required for 24 hours, not the amount to be given in the first 8 hours.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that the Parkland formula calculates the total fluid resuscitation needs for the first 24 hours post-burn, with half of the calculated volume administered in the first 8 hours and the other half over the subsequent 16 hours.

## **Correct Answer:** . 7,000 mL.