Before surgerys, 34.9% of patients had a history of percutaneous balloon mitral valvuloplasty, 39.5% of patients had NYHA class III, IV, the cardiothoracic ratio 0.6 ± 0.07, average of EF 58.1 ± 8.5%, and pulmonary pulse pressure 48.2 ± 15.7 mmHg.