This cohort included 517 cases of mitrai valve replacements (MVR), 88 cases of aortic valve replacements (AVR), and 195 double valve replacements (DVR).

• 本组二尖瓣置换术(MVR)517例,主动脉瓣置换术(AVR)88例,双瓣膜置换术(DVR)195例。