Influence of dilated cardiomyopathy complication complete left bundle branch block (CLBBB) on heart function and analysis of risk factors
HU Yuan-hui
JIA Qiu-lei
WEI Yi
CHU Yu-guang
SONG Qing-qiao
WANG Huan
Abstract：Objective To investigate the influence of complete left bundle branch block (CLBBB) on heart function in patients with dilated cardiomyopathy. Methods The patients (n=52) were chosen and divided into CLBBB group (n=21) and normal sinus rhythm (NSR) group (n=31). All patients were given echocardiogram examination, and the cardiac structure and function were compared between 2 groups. Results Age, LVESD and LVEDD were higher in CLBBB group compared with NSR group (P<0.01). IVSd and LVEF were lower in CLBBB group compared with NSR group (P<0.05, P<0.05). Age, LVESD and LVEDD were positively correlated to CLBBB (r=0.541, P=0.000;r=0.398, P=0.012;r=0.404, P=0.009), and IVSd was negatively correlated to CLBBB (r=-0.354, P=0.019). LVEF was not correlated to CLBBB (r=-0.288, P=0.061). The results of binary Logistic regression analysis showed that age and LVEDD were predictive factors of CLBBB occurrence (P=0.027, OR=1.196, 95%CI:1.020~1.402;P=0.018, OR=1.224, 95%CI:1.035~1.447). Conclusion CLBBB will aggravate the impairment of left ventricular function in patients with dilated cardiomyopathy, and age and LVEDD may be the risk factors of CLBBB occurrence.
Keywords：Dilated cardiomyopathyComplete left bundle branch blockAgeLeft ventricular end-diastolic inner diameter
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 511-514 )