People's normal valves are very soft, change into 2 rigid artificial mechanical valve, mitral and aortic valves are very close to the relative position of each other, between the mechanics of the extrusion and confrontation, long-term heavy labor heart compensation to a certain time there will be a heart failure, valve failure, etc.
This is the first time that I've seen the heart of a patient with a double valve replacement surgery, but I think it's a good idea for the heart to have the same kind of surgery.