echocardiography: systolic mean flow gradient of prosthetic pulmonary valve at end of inspiration
echocardiography: systolic mean flow gradient of prosthetic pulmonary valve at end of inspiration
echocardiography: systolic mean flow gradient of prosthetic pulmonary valve at end of inspiration (procedure)
echocardiography: systolic mean flow gradient of prosthetic pulmonary valve at end of inspiration (procedure)