二尖瓣收缩期前向运动的外科治疗现状

Current status of surgical treatment of systolic anterior motion of mitral valve

二尖瓣收缩期前向运动（SAM）是一种相对少见的并发症，但是发生后可导致严重的左心室流出道（ LVOT）梗阻和或二尖瓣反流（ MR），甚至威胁生命。超声心动图仍是SAM诊断的一线检查手段。由于LVOT梗阻、MR影响SAM患者的远期预后，故而，对于保守治疗无效的SAM患者，必须进行外科手术治疗，首选二尖瓣修复（ MVREP）。治疗和预防SAM的外科手术技术已经有了很大的进展，推进了二尖瓣修复术的普及，并使二尖瓣手术中的二尖瓣修复率大大提高。

Systolic anterior motion of mitral valve （ SAM） is a relatively uncommon complication , but it can result in se-vere left ventricular outflow tract（LVOT） obstruction and/or mitral regurgitation（MR）, even can be life-threating.Echocardio-graphy is still the first-line method of SAM diagnosis.Due to LVOT obstruction and MR reducing the long-term prognosis of pa-tients with SAM, it is necessary to carry out surgical treatment for patients with SAM for whom conservative treatment are not ef-fective.Then mitral valve repair（MVREP） is the first choice.Besides, surgical techniques for treatment and prevention of SAM have made great progress which have promoted the popularization of MVREP , and the rate of MVREP in mitral valve oper-ation has been greatly improved .