Fig. 5From: Short-term study of atrial shunt and improvement of functional mitral regurgitationThe NYHA classification and FMR classification of patients at different times. A NYHA classification for HFrEF group; B NYHA classification for HFpEF group; C FMR classification for HFrEF group; D FMR classification for HFpEF+HFmrEF groupBack to article page