Left bundle branch block: Variations on a theme

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.

A Preexcited Left Bundle Branch Block Tachycardia

A 52-year-old woman underwent an electrophysiologic prtKedure because of a 30-year history of recurrent episodes of paroxysmal tachycardia. The baseline sinus cycle length wa.s 600 msec and the QRS complexes had a left bundle branch block configuration, with a QRS duration of 120 msec. The atrial-His (AH) and His-ventricular (HV) intervals were 90 and 20 msec, respectively. Programmed atrial st...

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