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《Acta Universitatis Medicinalis Nanjing(Natural Science)》 2009-12
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Evaluation the changes of left ventricular rotation using speckle tracking imaging after transcatheter closure of ASD

YONG Yong-hong,ZHUANG Yan,YAO Jing,YANG Rong,SHENG Yan-hui,ZHOU Lei,XU Di,CAO Ke-jiang(Department of Cardiology,the First Affiliated Hospital of NJMU,Nanjing 210029,China)  
Objective:To investigate the left ventricular rotation in patients with atrial septal defect(ASD)after transcatheter closure of ASD.Methods:Using speckle tracking imaging(STI),the rotation of 6 segments of basal and apical short-axises were measured repeatedly in 25 patients with ASD before and after closure.25 healthy subjects were included as controls.The global rotation of the 6 segments in basal and apical short-axises versus time profile were drawn,and the peak rotation of basal and apical short-axises were calculated.LV ejection fraction(EF)was measured by biplane Simpson method.Results:Compared with healthy subjects,the peak rotation of antsept wall,laterior wall,posterior wall,inferior wall and postsept wall in basal of ASD group were lower(P 0.05).There was no significant difference between two groups on the peak rotation.LV rotation of apical short-axise increased after close,but was still lower than that of control group(P 0.05).Conclusion:Transcatheter closure of ASD could increase rotation of basal short-axises,and also improve LV twist.
【CateGory Index】: R541.1
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