Calculate the volume (L) of fluids

Question

Prior to surgery Dalena is placed on a maintenance dose of IV fluids. (27ml/kilogram/day)

Caccurate the volume (L) of fluids she should receive in 24 hours?

Dalena weighs 54.55 kg

Answer 1

Use dimensional analysis (unit factor method).

54.55 kg x 27 ml / kg / day x 1 day x 1 L / 1000 ml = 1.47 L = 1.5 L (2 sig. figs.)

... note kg units cancel; day units cancel; ml units cancel; this leaves units of liters...

Answer 2

To calculate the volume (L) of fluids she should receive in 24 hours, here is the formula:

Volume (L) = Weight (kg) × Maintenance Dose (ml/kg/day) / 1000

Volume (L) = 54.55 kg × 27 ml/kg/day / 1000 = 1.47085 L

So, Dalena should receive approximately 1.47085 liters of fluids in 24 hours.