echocardiography: systolic time-velocity integral (TVI) of superior vena cava reversal at end of inspiration
echocardiography: systolic time-velocity integral (tvi) of superior vena cava reversal at end of inspiration
echocardiogram superior vena cava flow velocity systolic reversal time velocity integrals end inspiration
echocardiogram superior vena cava flow velocity systolic reversal time velocity integrals end inspiration