<International Circulation>: We know the new technology has encouraging prospects in the eyes of clinicians and of course it is paramount to pay attention to safety. What is your view on the safety of percutaneous aortic valve implantation?

    Dr Ussia: Where the procedure is successful the outcomes are impressive. From European national registries data we see the procedural success is around 97% to 98%， and the 30 day all cause mortality is around 8% which is lower than the expected mortality rate for cardiac surgery as predicted by surgical risk scores .
So the safety and efficacy of the transcatheter aortic valve implantation are good and very encouraging for the future.
 

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