二尖瓣脱垂的超声心动图诊断标准质疑

IS IT TRUE MITRAL VALVE PROLAPSE?

本研究在接受超声心动图检查的２７例正常人中，发现有１４例（５１．８５％）二尖瓣关闭在心尖四腔心切面超过瓣环水平脱入左心房，而胸骨旁长轴切面无此现象。系统随访两年，这１４例被检者，均无临床症状。鉴于二尖瓣环为一非平面的“马鞍”，心尖四腔心切面上二尖瓣环的位置较低，故超声心动图对二尖瓣脱垂的诊断标准应重新研究制定。

Twenty-seven normal adults underwent echocardiographic study. Superior displacement of the mitral leaflet into the left atrium was detected in 14(51. 85%)cases in the apical four-chamber view, but the same phenomenon was not apparent in the parasternal long-axis view. The mitral annulus is nonplanar and 'saddle'shaped,the position of the annulus is lower in the apical four chamber view than in the parasternal long axis view. No symptoms of mitral valve prolapse were found during serial follow up for two years.The diagnostic criteria for mitral walve prolapse by echocardiography might require redifinition.