三维斑点追踪成像技术评估心房功能性二尖瓣反流患者左心室功能OA北大核心CSTPCD

Objective:To utilize three-dimensional speckle tracking imaging(3D-STI)to assess left ventricular function in patients with atrial functional mitral regurgitation(AFMR)and explore its clinical application value.Methods:According to the presence or absence of mitral regurgitation,82 patients with atrial fibrillation were divided into simple atrial fibrillation group(n=48)and AFMR group(n=34).Additionally,40 healthy volunteers were selected as the control group.Global longitudinal strain(GLS),global circumferential strain(GCS),global radial strain(GRS)and left ventricular peak twist(LVPtw)were obtained by 3D-STI.The differences in the above parameters among the groups were compared.The receiver operating characteristic(ROC)curves were drawn to analyze the diagnostic efficacy of GLS,GCS,GRS and LVPtw in patients with left ventricular dysfunction in AFMR.Results:Compared with the control group,GLS,GCS and GRS in the simple atrial fibrillation group were significantly lower(all P<0.05),and GLS,GCS,GRS and LVPtw in the AFMR group were significantly lower than those in the control group and the simple atrial fibrillation group(all P<0.05).ROC curves showed that the areas under the curves of GLS,GCS,GRS and LVPtw in diagnosing left ventricular dysfunction in patients with AFMR were 0.884,0.788,0.865 and 0.850,respectively.Conclusion:The application of 3D-STI can detect early left ventricular myocardial damage in AFMR pa-tients,and based on their myocardial strain and torsion parameters,it has certain clinical significance for guiding clinical ear-ly intervention.