PATHOGENESIS OF LEFT BUNDLE BRANCH BLOCK

Pathogenesis of Left Bundle Branch Block.

In 1909 Eppinger and Rothberger showed that characteristic changes in the electrocardiogram arose after section of the right and left branches of the bundle of His in dogs, and the following year these experimental results were applied to human pathology, so that bundle branch block became a clinical concept. Since that time the electrocardiogram originally designated right branch block has com...

Left Bundle Branch Block

Coronary angiography, cine left ventriculography, and the cardiovascular hemodynamics of 24 patients with left bundle branch block were studied. Seven patients were found to have significant coronary artery disease, always severe. Five had cardiomyopathy and seven had valvular disease. Only those with coronary artery disease or cardiomyopathy had abnormal left ventricular contraction patterns. ...

Left bundle branch block.

A RECENT STUDY of the prognosis of patients with left bundle branch block (L.B.B.B.) suggested that life expectancy was extremely short (Smith and Hayes 1965). While in general L.B.B.B. has a sinister reputation, we have been struck by a few individuals who have survived many years with L.B.B.B., and we thought an analysis of some of the material available at the Royal Victoria Hospital, Belfas...

Intermittent left bundle branch block

Presenting electrocardiograms of intermittent left bundle branch block in a 60-year-old female.

Tachycardia-dependent left bundle branch block associated with bradycardia-dependent variable left bundle branch block.