A child weighing 22 pounds is trapped in a house fire and sustains a burn injury. The total body surface area (TBSA) affected by burns is found to be 40%. The Parkland formula for fluid resuscitation is used to calculate the amount of fluid the child requires. The nurse determines that the child will receive how many milliliters of fluid in the first 8 hours after the time of injury? Fill in the blank.
The correct answer and Explanation is :
To calculate the fluid requirement for a child with burns using the Parkland formula, we need to follow these steps:
- Parkland formula:
[
\text{Total fluid requirement (mL)} = 4 \times \text{weight (kg)} \times \text{TBSA (%)}
] - Convert weight:
The child’s weight is given in pounds, so we need to convert it to kilograms:
[
1 \text{ lb} = 0.453592 \text{ kg}, \quad \text{so} \quad 22 \text{ lbs} \times 0.453592 = 9.98 \text{ kg}
]
(We can round this to 10 kg for simplicity.) - Calculate total fluid requirement:
Using the formula:
[
4 \times 10 \text{ kg} \times 40 = 1600 \text{ mL}
]
This is the total fluid requirement for the first 24 hours. - Fluid distribution over time:
According to the Parkland formula, half of the total fluid is given in the first 8 hours, and the remaining half over the next 16 hours. Therefore, the fluid to be given in the first 8 hours is:
[
\frac{1600 \text{ mL}}{2} = 800 \text{ mL}
]
Thus, the child will receive 800 mL of fluid in the first 8 hours.
Explanation:
The Parkland formula is a standard method used to estimate the fluid requirements for burn patients in the first 24 hours after a burn injury. It accounts for the patient’s body weight and the total body surface area (TBSA) affected by burns, both critical factors in determining the degree of fluid loss and the need for resuscitation.
Fluid resuscitation is essential to prevent hypovolemic shock, a condition where the body loses a large amount of fluid, leading to insufficient blood circulation and organ failure. In the case of burn patients, the skin barrier is compromised, allowing fluid and electrolytes to escape from the damaged tissue, hence the need for adequate fluid replacement.
By calculating the fluid needs based on the TBSA and weight, and then delivering half of that volume within the first 8 hours, the nurse ensures that the child’s hemodynamic stability is maintained during this critical period.