二尖瓣关闭 meaning in English

mitral valve closure

We therefore analyzed long - term prognostic factors of significant mr after pm
因此分析经皮二尖瓣成形术后严重二尖瓣关闭不全的长期预后因素。
Conclusions ? clinical outcome of patients with significant mr after pm aried according to mr mechanism and the adequacy of hemodynamic improement , which is easily assessed by echocardiography immediately after pm
结论：经皮二尖瓣成形术后严重二尖瓣关闭不全患者的临床结果因mr机制和血流动力学改善的程度的不同而异，这种血流动力学改善的程度的不同可以在经皮二尖瓣成形术后立刻通过超声心动图检测。
Background ? mild commissural mitral regurgitation ( mr ) is associated with significantly higher restenosis - free surial after percutaneous mitral aluloplasty ( pm ) , which suggests that different mechanisms of significant mr after pm may hae different clinical courses
背景：经皮二尖瓣成形术后严重高度非再狭窄存活率与轻度交界处损伤的二尖瓣关闭不全相关，表明经皮二尖瓣成形术后严重二尖瓣关闭不全的不同机制可能有不同的临床过程。