Home/Equations/SVC collapsibility index (ΔSVC)SVC collapsibility index (ΔSVC)EchoEquationSVC collapsibility index (ΔSVC)ΔSVC=Dmax−DminDmax×100%\Delta SVC = \dfrac{D_{max} - D_{min}}{D_{max}} \times 100\%ΔSVC=DmaxDmax−Dmin×100%ExplainerRespiratory collapse of the superior vena cava on TOE; a marker of fluid responsiveness.