摘要目的:总结先天性二尖瓣瓣上隔膜(SMR)的超声心动图影像特征，通过超声心动图随访其手术预后。方法:回顾性分析2016年1月至2020年1月在中国医学科学院阜外医院经外科手术治疗的SMR患者53例，根据有无合并二尖瓣器异常分为单纯组28例及复合组25例，分析两组超声心动图特征、漏误诊原因及近中期超声心动图随访结果。结果:单纯组和复合组年龄差异无统计学意义( P>0.05)。两组术前二尖瓣峰值及平均跨瓣压差差异无统计学意义(均 P>0.05)。但复合组合并二尖瓣反流及左室流出道梗阻数量大于单纯组(均 P<0.05)。所有患者均接受外科手术治疗，随访时间(14.69±11.14)个月。术前超声诊断共漏诊7例，总漏诊率13%，复合组漏诊率较高(20%对7%)，但两组间差异无统计学意义( P>0.05)。两组术后早期和随访期二尖瓣峰值及平均跨瓣压差明显低于术前(均 P<0.05)。复合组术后早期和随访期二尖瓣峰值及平均跨瓣压差高于单纯组(均 P<0.05)。两组二尖瓣再狭窄者各3例，复合组3例接受了再次手术干预。 结论:超声心动图可以诊断不同类型SMR及伴发畸形，评估手术效果并随访SMR是否复发。单纯SMR手术效果较好，但仍存在一定的复发率。

abstractsObjective:To review the patients with supramitral ring (SMR) and summary echocardiographic features and operative prognosis in these patients.Methods:Clinical and echocardiographic data of 53 patients with SMR treated in Fuwai Hospital from Jan 2016 to Jan 2020 were reviewed. Patients were divided into simple group( n=28) and complex group( n=25) based on mitral apparatus normal or not. The echocardiographic characteristics, morphology of the rings, procedure′s results and follow-up data were recorded and assessed. Results:There was no significant difference in age, peak and mean mitral value(MV) gradient before surgery between the two groups (all P>0.05). Patients with mitral regurgitation and left outflow tract obstruction in complex group were more than in simple group (all P<0.05). All patients underwent cardiac operation. The average follow-up were(14.69±11.14)months. The overall missed diagnosis was 13%. The missed diagnosis rate in complex group was higher(20% vs 7%). The peak and mean MV gradient in all patients after surgery were reduced (all P<0.05), but the gradients in complex group were higher than simple group(all P<0.05). Restensis occurred in 3 patients in each group after surgery, in which 3 patients in complex group accepted reoperation. Conclusions:Echocardiography can diagnose different types of SMR and associated malformations, evaluate surgical outcomes, and follow up for recurrence of SMR. Patients with simple SMR have better surgical results, but there is still a certain recurrence rate of stenosis.