Q: During resuscitation in "acute hemorrhagic shock" what is the ratio of IVF in expanding intravascular volume?


Answer: 3:1

As crystalloids quickly leak from the vascular space, each liter of IVF (NS or LR) expands the blood volume by 20-30%; therefore, in general, about 3 L of IVF is needed to be administered to raise the intravascular volume by 1 Litre.