然而，与外科瓣膜置换术（目前即使在高危患者中仍然是金标准）相比较，经导管主动脉瓣置换术需要证明它的有效性。

Nevertheless, transcatheter aortic valve replacement needs to prove its effectiveness in comparison to surgical valve replacement, which remains the gold standard, even in high-risk patients.

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目的回顾性总结主动脉瓣和二尖瓣联合瓣膜置换术的体外循环经验。

OBJECTIVE To summarize the clinical experience of cardiopulmonary bypass in double valve replacement.

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方法：采取右侧小切口及横断胸骨小切口，对23例二尖瓣、主动脉瓣病变患者行瓣膜置换术。

Methods: Through right minimally incision and transected sternal incision, 23 patients underwent mitral or aortic valve replacement.

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