Analysis of sonographic characteristics and outcomes of supramitral ring by echocardiography / 中华超声影像学杂志

ABSTRACT

Objective: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.