echocardiography: systolic regurgitant time-velocity integral (TVI) for mitral valve at end of expiration
echocardiography: systolic regurgitant time-velocity integral (tvi) for mitral valve at end of expiration
echocardiography: systolic regurgitant time-velocity integral (TVI) for mitral valve at end of expiration (procedure)
echocardiography: systolic regurgitant time-velocity integral (tvi) for mitral valve at end of expiration (procedure)