<International Circulation>: With respect to annular anatomy in comparing Caucasian and Asian populations， does this imply that more Asian patients will be candidates for TAVI due to appropriate valve availability?

   《国际循环》：白人和亚洲人瓣环解剖结构的差异，是否提示亚洲人因为更容易找到合适的瓣环而更合适做TAVI手术？
    Prof Kuck: I have no doubt that the annular site will be significantly different in Caucasian patients and Asian patients. We know this from other percutaneous procedures such as pulmonary vein isolation where the pulmonary veins are significantly smaller in the Asian population than the Caucasian population. In general， we should expect that larger annuli (29mm or 31mm) will be extremely rare in Asian populations. They will probably need a smaller valve than the 23mm， probably a 19mm or 20mm valve for the future.

    Kuck教授: 白人和亚洲人瓣环型号的差异毋庸置疑，在做肺静脉隔离消融术时我们经常看到亚洲人肺静脉通常较白种人小。总之在亚洲人中用到29-31mm型号的较少，一般在23mm以下，大概19-20mm左右。

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