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