【摘要】：目的探討二維斑點(diǎn)追蹤成像(STE)評(píng)估左心室射血分?jǐn)?shù)(LVEF)正常的完全性左束支傳導(dǎo)阻滯(CLBBB)患者不同QRS時(shí)限下左心室收縮、舒張功能及同步性的價(jià)值。方法收集LVEF正常的CLBBB患者44例,根據(jù)QRS時(shí)限分為寬QRS組(QRS150ms)和窄QRS組(120ms≤QRS≤150ms);另選30名健康體檢者作為對(duì)照組。對(duì)各組均行常規(guī)超聲心動(dòng)圖及STE檢查。測(cè)量并計(jì)算左心室整體、室間隔、左心室側(cè)壁縱向峰值應(yīng)變(LS-G、LS-Sept、LS-Lat)、左心室18節(jié)段心肌縱向應(yīng)變達(dá)峰時(shí)間的標(biāo)準(zhǔn)差(SDt)及左心室舒張功能指標(biāo)(EDT、E/A、E/e')等。結(jié)果寬QRS組和窄QRS組SDt均大于對(duì)照組(P均0.01),寬QRS組SDt大于窄QRS組(P0.05)。寬QRS組LVEF和LS-G均小于對(duì)照組和窄QRS組(P均0.05),窄QRS組與對(duì)照組間差異無(wú)統(tǒng)計(jì)學(xué)意義(P均0.05)。寬QRS組和窄QRS組LS-Sept均小于對(duì)照組(P均0.01),寬QRS組LS-Sept小于窄QRS組(P0.01)。窄QRS組LS-Lat大于對(duì)照組和寬QRS組(P均0.05),寬QRS組與對(duì)照組間差異無(wú)統(tǒng)計(jì)學(xué)意義(P0.05)。寬QRS組和窄QRS組的E/A和EDT均小于對(duì)照組(P均0.05),E/e'大于對(duì)照組(P均0.05);寬QRS組與窄QRS組間,EDT、E/A、E/e'差異均無(wú)統(tǒng)計(jì)學(xué)意義(P均0.05)。結(jié)論寬QRS的LVEF正常的CLBBB患者左心室收縮、舒張功能及收縮同步性減低,而窄QRS患者左心室收縮功能無(wú)明顯減低。
[Abstract]:Objective to investigate the value of two-dimensional speckle tracing imaging (STE) in evaluating left ventricular systolic diastolic function and synchronism in patients with normal left ventricular ejection fraction (LVEF) and complete left bundle branch block (CLBBB). Methods 44 patients with CLBBB with normal LVEF were divided into broad QRS group (QRS 150ms) and narrow QRS group (120ms 鈮，

本文編號(hào)：2133093