We think that the patients with unable to stand cardiovalvulotomy, and with serious mitral stenosis and left atrial thrombi can perform PBMV under active correct prepare of preoperation and selected appropriate chance and mastery skill. 我们认为,对已不能耐受外科手术的重度二尖瓣狭窄合并左房心耳部和侧壁的附壁血栓患者,在积极正确的术前准备、掌握好时机和操作熟练的前提下仍可进行PBMV。