Evaluation of regional diastolic function in ischemic myocardium with tissue doppler imaging and angiography of coronary artery
Abstract：Objective We evaluated the ability of tissue Doppler imaging(TDI), a new echocardiographic techique that can image the regional myocardial velocity, to assess the regional diastolic function in ischemic heart disease. Methods Control subjects (Con,30 cases)and patients with ischemic heart diseases(IS,28 cases)were enrolled.Global and regional isovalumic relaxation time(IRT,mIRT),deceletation time of early filling (DcT, mDcT),early diastolic velocity(E,mE), late diastolic velocity (A, mA),E/A and mE/mA were measured by pulsed Doppler echocardiography and TDI respectively. Results There were not difference in LVEF between Is and Con-groups. Compared with Con, DcT and IRT were prolonged (P＜0.001) in Is-group respectively. The mE in basal and middle level of left ventricle were higher than those in apical level in Con-group. The slower mE, longer mIRT and rmDcT were found in Is segments. Compared to diastolic transmitral flow,TDI showed higher abnormal rate in Is-group(64% vs 93%, P＜0.01). Conclutions TDI can non-invasive evaluate of regional diastolic function in ischemic myocardium,which showed abnormal relaxation pattern and more sensitive than TMF.
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Publication Date：2001-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 73-75 )