echocardiography: peak diastolic velocity (D2) of distal right pulmonary vein at rest
echocardiography: peak diastolic velocity (d2) of distal right pulmonary vein at rest
echocardiography: peak diastolic velocity of distal right pulmonary vein at rest
echocardiography: peak diastolic velocity of distal right pulmonary vein at rest