Rational Fluid Therapy Supported by the Physiology of Blood Volume

Abstract

  Liberal infusion according to conventional calculations is reported to cause postoperative complications. It has been reported that postoperative blood volume is unrelated to in-out balance. Crystalloid has only transient volume-expanding effects. Goal-directed fluid therapy (GDT) employing SVV (stroke volume variation) and SV (stroke volume) allows us to titrate fluid therapy confirming volume-expanding effects. Recent reports showed that colloid is preferentially used according to GDT, and usage of crystalloid is limited. If the parameters of fluid response are appropriately applied, then postoperative complications could be reduced, preventing liberal infusion of crystalloid.