Background: Diagnosis of coronary artery disease (CAD) in patients with left bundle branch block (LBBB) is considered as a challenge in cardiology due to the low accuracy of noninvasive methods such as basal and stress electrocardiography (ECG). This diagnostic challenge can be reduced but not eliminated using dipyridamole as a stress method instead of exercise. The aim of this study was to ass...

Abstract Funding Acknowledgements Type of funding sources: Public hospital(s). Main source(s): Institute for Surgical Research, Oslo University Hospital. Introduction It was recently shown that left bundle branch block (LBBB) is associated with risk developing atrial fibrillation. A potential mechanism abnormal (LA) loading caused by LA dyssynchrony. Purpose To investigate if LBBB as reflected ...

These electrocardiograms were taken on a 36 yearold man, with no known cardiac abnormality. The twelve-lead tracing, which shows sinus rhythm at rates between 53 and 60/min., has abnormal T waves in Vl V4. A s{rip, using lead V6, shows the interesting phenomenon of rate-dependent left bundle branch block (LBBB). Please. note in this strip that the first four sinus beats have normal QRS-T waves....

The occurrence of left bundle branch block (LBBB) is quite common in clinical practice. The changes in cardiac repolarization, caused by this disorder of electric conduction, may mask the presence of an acute myocardial infarction (AMI), delaying the diagnostic-therapeutic iter, with an important impact on prognosis. We describe the case of a woman of 59 years with LBBB, came to our observation...

Transcatheter aortic valve replacement (TAVR) is now an established treatment option for patients with aortic stenosis who are considered to be at high or prohibitive surgical risk. Substantial improvements in technology, patient selection, and refined procedural techniques have provided the basis for TAVRs expansion toward treating a lower surgical risk aortic stenosis population. However, the...

AIMS The aims of this study were: (i) to characterize consecutive cardiac resynchronization therapy (CRT) recipients with right bundle branch block (RBBB) in comparison with left bundle branch block (LBBB) and (ii) to identify independent predictors of long-term outcome among CRT recipients with RBBB. The presence of RBBB has been associated with poorer prognosis after CRT compared with LBBB; h...

Aims Transcatheter aortic valve implantation (TAVI) is frequently associated with cardiac conduction defects (CCD) requiring permanent pacemaker implantation (PPI). Although new-onset left bundle branch block (LBBB) is often seen, the rate of progression to severe CCD is unclear. We aimed to find clinical and electrocardiographic (ECG) parameters associated with severe CCD requiring PPI in pati...

SUMMARY The conduction systems of eight cases diagnosed clinically as having complete left bundle branch block (LBBB) were serially sectioned. Left axis deviation was present in six and normal axis in two. In all cases there was evidence of ischemia of the myocardium and left bundle branch (LBB) in various parts of the coronary circulation. In all cases, the LBB showed pathologic change at its ...

BACKGROUND The literature lacks studies about the prognostic value of exercise stress echocardiography (ESE) in patients with complete left bundle branch block (LBBB) of the bundle of His. OBJECTIVE To assess the prognostic value of ESE in patients with LBBB. METHODS This is a retrospective cohort that evaluated 135 patients with LBBB, from January 2001 to October 2009, of which 37.8% were ...

INTRODUCTION Although strict selection criteria are used to select patients for cardiac resynchronisation therapy, up to 30% of patients do not have a positive clinical response. PATIENTS A total of 102 consecutive patients who had biventricular pacemaker/defibrillator (CRT-P or CRT-D) implanted were enrolled in this prospective observational study. RESULTS During the average follow-up peri...