Figure 1From: The maintenance and monitoring of perioperative blood volumeBody fluid compartments. Amounts in liters. mEq/L is milliequivalents per liter. Reproduced with permission [19]. ECV: extracellular volume (PV + ISF); ICF: intracellular fluid space; ISF: interstitial fluid space; IVS: intravascular space; PV: plasma volume.Back to article page