echocardiography: peak diastolic velocity from time-velocity integral (TVI) of superior vena cava at end of expiration
echocardiography: peak diastolic velocity from time-velocity integral (tvi) of superior vena cava at end of expiration
SVC diastolic peak velocity (D2) from TVI at end of expiration
svc diastolic peak velocity (d2) from tvi at end of expiration