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