echocardiography: peak diastolic velocity (D2) of distal right pulmonary vein with stress
echocardiography: peak diastolic velocity (d2) of distal right pulmonary vein with stress
echocardiography: peak diastolic velocity (D2) of distal right pulmonary vein with stress (procedure)
echocardiography: peak diastolic velocity (d2) of distal right pulmonary vein with stress (procedure)