"In severe cases:congestive heart failure,arrhythmias (atrial fibrillation),pulmonary hypertension" . . "394.1" . "000176" . . . . . "emerg" . . . "Mitral regurgitation#Electrocardiography" . "," . "," . . "746.6" . . "mitral valve regurgitation" . "Mitral regurgitation#Etiology" . . "314" . . . "Mitral Regurgitation" . "Q23.3" . "Mitral regurgitation" . . "I34.0" . "mitral regurgitation" . . . . . . "Regurgitation of blood through the mitral valve" . "I05.1" . . "D008944" . "mitral valve disease" . . "8275" . . "Mitral regurgitation" . "424.0" . . "mitral" . . .