Relationship between electrocardiographic characteristics of left bundle branch block and echocardiographic findings

Lépori, Augusto J.; Mishima, Ricardo S.; Rodríguez, G. del P. Toledo; Moreyra, Eduardo; Serra, J; Tibaldi, Miguel; Martellotto, Andres

doi:10.5603/cj.a2015.0005

Cited by 5 publications

(7 citation statements)

References 28 publications

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“…Left bundle branch block (LBBB) is a cardiac conduction abnormality that occurs because of an interruption or slow conduction in the His‐Purkinje system, which causes sequential biventricular activation with a delay in the electrical activation between the interventricular septum and the left ventricular (LV) lateral wall . The incidence of LBBB in the general population is 0.1%–0.8% .…”

Section: Introductionmentioning

confidence: 99%

Postsystolic index for distinguishing coronary artery disease in left bundle branch block

et al. 2019

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Background Left bundle branch block (LBBB) is associated with a high risk of death, particularly from ventricular tachyarrhythmia and myocardial infarction. It is difficult to clinically differentiate between ischemic and nonischemic LBBB. In this study, we investigated whether advanced echocardiographic variables, such as strain delay index (SDI) and postsystolic index (PSI), can be used to distinguish coronary artery disease (CAD) in patients with LBBB. Methods Our study included 102 patients with LBBB. All patients underwent echocardiography. The left ventricular ejection fraction (LVEF), left ventricular mass, PSI, SDI, global longitudinal strain (GLS), and time‐to‐peak longitudinal strain were then calculated. Coronary angiography was performed, and the patients were divided into groups with significant CAD and without significant CAD. Results Patients in the group with significant CAD were older than the patients in the group without significant CAD. The group had a higher prevalence of diabetes mellitus, hypertension, hyperlipidemia, and family history of CAD than the group without significant CAD. The group with significant CAD also had lower LVEF and GLS than the group without significant CAD. The group without significant CAD showed a direct correlation between LVEF and SDI and an inverse correlation between LVEF and PSI: P value = 0.040 and r = 0.255, and P value = 0.001 and r = −0.427, respectively. However, the group with significant CAD did not show any significant correlation between LVEF and SDI or PSI. Conclusion Strain delay index and PSI may be useful markers in distinguishing CAD in patients with LBBB and preserved LVEF.

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Section: Introductionmentioning

confidence: 99%

Postsystolic index for distinguishing coronary artery disease in left bundle branch block

et al. 2019

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“…Twelve manuscripts met all inclusion criteria. 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 …”

Section: Resultsmentioning

confidence: 99%

“… 23 All of the included studies in this review had low applicability concerns, which included patient selection, index test, and reference standard. 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 …”

Section: Resultsmentioning

confidence: 99%

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Diagnostic Accuracy of ECG to Detect Left Ventricular Hypertrophy in Patients with Left Bundle Branch Block: A Systematic Review and Meta-analysis

A.F. de Souza,

M.H. Padrao,

R. Marques

et al. 2023

CJC Open

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“…In this condition, the left ventricle activation is delayed, which delays the contraction of left ventricle later than the right ventricle [1] [2]. LBBB is also defined as the duration of the QRS on the electrocardiography (ECG) greater than 120 ms, slurred R wave in leads I, V5, and V6, RS pattern in V5 and V6, and absent Q waves in left lateral leads [3].…”

mentioning

confidence: 99%

Clinical Profile of the Patients with Newly Detected Left Bundle Branch Block in the Outpatient Department

Benjamin¹

2018

WJCD

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Objective: The purpose of this study was to evaluate cardiac features associated with newly detected left bundle branch block (LBBB) in the outpatient department. Methods: A total of 57 patients with LBBB pattern were evaluated using electrocardiography (ECG). Patients were assessed based on their sex, age, detailed history, and cardiovascular symptoms. Cardiac investigations including ECG and echocardiography were performed. Results: The study included 30 (52.6%) males and 27 (47.5%) females, aged between 35 and 80 years. Dyspnoea (35.1%) and chest pain (22.8%) were the most common symptoms. 54.4% were hypertensive and 17.5% were diabetics. 28% had Left ventricular systolic dysfunction, and 24.5% had aortic valve disease. Left ventricular hypertrophy without any other structural heart disease was present in 28% of the patients. Only 24.5% patients presented with LBBB had a structurally normal heart in echocardiography. Myocardial performance index in echocardiography was abnormal in LBBB irrespective of the presence of structural heart disease. Conclusion: The prevalence of LBBB was found to increase with age and had slight male preponderance. Dyspnoea on effort was the most common presenting complaint, followed by chest pain and incidental detection of ECG abnormality. Most of the patients were hypertensive. Only 24.5% patients with LBBB had a structurally normal heart. MPI was abnormally high in the presence of LBBB despite having a normal left ventricular ejection fraction.

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Relationship between electrocardiographic characteristics of left bundle branch block and echocardiographic findings

Cited by 5 publications

References 28 publications

Postsystolic index for distinguishing coronary artery disease in left bundle branch block

Postsystolic index for distinguishing coronary artery disease in left bundle branch block

Diagnostic Accuracy of ECG to Detect Left Ventricular Hypertrophy in Patients with Left Bundle Branch Block: A Systematic Review and Meta-analysis

Clinical Profile of the Patients with Newly Detected Left Bundle Branch Block in the Outpatient Department

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