Question

A pt weighs 80 kg has a 20% burn. Use the fluid calculation (fluid replacement = TBSA % · wt (kg) · 4mL. How much will you give over the first 8 hours?

Answer 1

To calculate fluid replacement for a burn patient, use the formula fluid replacement = TBSA% · weight (kg) · 4mL. For an 80 kg patient with a 20% burn, they would require 25.6 liters of fluid over the first 8 hours.

Step-by-step explanation:

The question pertains to the calculation of fluid replacement for a patient who weighs 80 kg and has sustained a 20% burn. The formula for fluid replacement is fluid replacement = TBSA % · wt (kg) · 4mL. To answer the question, the total volume of fluid required over the first 24 hours should be calculated first, then the amount to be administered over the first 8 hours must be determined.

Using the given formula:

• Total fluid required for 24 hours = 20% · 80kg · 4mL = 0.20 · 80 · 4mL = 640mL/kg
• 640mL/kg · 80 kg = 51200mL or 51.2L total for the first 24 hours
• It is standard to administer half of the total 24-hour fluid requirement in the first 8 hours, which equals 25.6L (25600mL)

Therefore, a patient weighing 80 kg with a 20% burn would require a fluid replacement of 25.6 liters over the first 8 hours post-burn.