Tei index detected by synchronous sampling technique of dual Doppler imaging combining brain natriuretic peptide for reviewing left ventricular function in patients with acute coronary syndrome
LI Jing
LIANG Yan-ling
LUO Xue-qing
Abstract：Objective To analyze the clinical application value of myocardial performance index (Tei index) detected by synchronous sampling technique of tissue Doppler imaging (TDI-Tei) combining N-terminal pro-brain natriuretic peptide (NT-proBNP) for reviewing left ventricular function in patients with acute coronary syndrome (ACS).Methods ACS patients (n=84, observation group) and health controls (n=40, control group) were chosen from the Affiliated Hospital of Youjiang Medical University for Nationalities from Aug. 2013 to Jun. 2016. Tei index was detected by using transthoracic echocardiography (TTE) and synchronous sampling technique of TDI in 2 groups. TDI-Tei and relevant systolic indexes [ratio of isovolumic contraction time to ejection time (ICT/ET)] and relevant diastolic index [isometric relaxation time (IRT)/ET] were compared and analyzed in 2 groups. The content of NT-proBNP was detected immediately after admission, and correlation between TDI-Tei and ratio of peak A of mitral flow velocity (A) to peak E of mitral flow velocity (E, E/A), and between left ventricular ejection fraction (LVEF) and NT-proBNP were analyzed in observation group.Results TDI-Tei was significantly prolonged, and relevant systolic indexes and relevant diastolic index increased significantly in observation group compared with control group (allP<0.05). TDI-Tei was positively correlated to NT-proBNP (r=0.654,P<0.001), TDI-Tei was negatively correlated to LVEF (r=-0.569,P<0.001), and LVEF was negatively correlated to NT-proBNP (r= -0.468,P=0.001) in observation group. Conclusion TDI-Tei can used for reviewing the whole left ventricular function, and correlation among TDI-Tei, NT-proBNP and LVEF can indirectly reflect left ventricular function in ACS patients.
Keywords：Tissue Doppler imagingTei indexBrain natriuretic peptideAcute coronary syndromeLeft ventricular function
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 605-608 )