Stroke volume variation obtained with Vigileo/FloTrac™ system during bleeding and fluid overload in dogs

Purpose Stroke volume variation (SVV) is a parameter for estimating fluid responsiveness. Recently, the Vigileo™ and the Flo-Trac™ sensor (Edwards Lifesciences, Irvine, CA, USA) were made available for clinical use to estimate SVV. The aim of this study was to investigate the relationship between the circulating blood volume and SVV, measured by the Vigileo-FloTrac™ system (SVV-FloTrac) or by central venous pressure (CVP), during a dynamic change in circulating blood transfusion volume, using a continuous constant bleeding and fluid-overload model in dogs.