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
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