Improved identification of coronary artery disease in patients with left bundle branch
block by use of dobutamine stress echocardiography and comparison with myocardial perfusion tomography.
Left bundle branch
block (LBBB) can mask the ECG signature of acute or chronic myocardial ischemia or infarction.
The pathologies simulated were an AV block and a left bundle branch
The variables found to be important predictors of LV dysfunction were male sex, cardiomegaly on chest radiograph, and left bundle branch
block on EKG.
Characterization of left ventricular activation in patients with heart failure and left bundle branch
Their concept was based on the fact that in CHF, left ventricular systolic dysfunction, high-grade intraventricular conduction delays are frequently observed: 25-50% of the patients have (IRS duration>120 ms and 17-25% of patients shows left bundle branch
Caption: Figure 1: On presentation, a 12-lead electrocardiogram showed ventricular tachycardia of a left bundle branch
morphology and superior axis.
In this study, severe arrhythmia includes complete atrioventricular block (CAVB), complete left bundle branch
block (CLBBB), ventricular tachycardia (VT), and complete right bundle branch block (CRBBB), which is accompanied with left anterior bundle branch block (LABBB).
Objective: To determine the role of visual quantification of Tc-99m MIBI myocardial perfusion SPECT in left bundle branch
block as compared to coronary angiography findings.
DIAGNOSIS: Sinus tachycardia, voltage criteria for left ventricular hypertrophy (LVH) with QRS prolongation (incomplete left bundle branch
block) and repolarization change.
The ECG findings revealed supraventricular heart rhythm, with left bundle branch
New analyses from a large study conducted in 2009, called MADIT-CRT, presented at the American College of Cardiology's 2014 Scientific Sessions in March, showed that CRT-D in patients with asymptomatic or mildly symptomatic heart failure (NYHA I/II) significantly reduces the risk of death or complications from heart failure when the patient has left bundle branch
block, a condition that causes the left ventricle to contract later than the right ventricle.