Values of RT-3DTEE combined with 2D-STI in evaluating left atrial structure and predicting left anterior descending branch stenosis in patients with coronary heart disease
Objective To investigate the values of real-time three-dimensional transesophageal echocardiography(RT-3DTEE)combined with two-dimensional speckle tracking imaging(2D-STI)in evaluating the left atrial structure and predicting the left anterior descending branch stenosis in the patients with coronary heart disease(CHD).Methods A total of 236 cases with suspected CHD underwent coronary angiography,who then were divided into two groups of A(with CHD,118 cases)and B(without CHD,118 cases).The left atrial structural parameters were measured by RT-3DTEE and 2D-STL The CHD patients were divided into two groups of C(with left anterior descending branch stenosis)and D(without left anterior descending branch stenosis).Multivariate logistic regression was used to analyze the influencing factors for the left anterior descending branch stenosis,and ROC curve was used to evaluate the predictive value.Results The minimum left atrial volume index(LAVImin),maximum left atrial volume index(LAVImax),left atrial pre systolic volume index(LAVIpreA),and peak strain rate during the left atrial conduit phase(pLASRcd)were higher,and total ejection fraction of left atrial(LATEF),left atrial passive ejection fraction(LAPEF),left atrial strain during reservoir phase(LASr),left atrial strain during conduit phase(LAScd),and peak strain rate during the left atrial reservoir phase(pLASRr)were lower in group A than those in group B(P＜0.05).The LAVImin,LAVImax,LAVIpreA,pLASRcd were higher,and LATEF,LAPEF,LASr,LAScd,pLASRr were lower in group C than those in group D(P＜0.05).Whether the confounders unadjusted(model 1)or adjusted(model 2),higher LAVImin,LAVImax,LAVIpreA and pLASRcd were the independent risk factors for left anterior descending branch stenosis(P＜0.05),and higher LATEF,LAPEF,LASr,LAScd and pLASRr were the protective factors(P＜0.05).The AUC of model 2 in predicting the left anterior descending branch stenosis was higher than that of model 1(P＜0.01).Conclusion RT-3DTEE combined with 2D-STI can be used to evaluate the structure changes of the left atrium in the patients with CHD,and has a high predictive value for the left anterior descending branch stenosis.
万方数据
维普
