echocardiography: peak atrial reversal velocity of distal right pulmonary vein at end of expiration
echocardiography: peak atrial reversal velocity of distal right pulmonary vein at end of expiration
echocardiography: peak atrial reversal velocity of distal right pulmonary vein at end of expiration (procedure)
echocardiography: peak atrial reversal velocity of distal right pulmonary vein at end of expiration (procedure)