Rate dependent left bundle branch block with gradual transition between normal intraventricular conduction and complete left bundle branch block. A case report.

Tachycardia-Dependent Left Bundle Branch Block Associated with Bradyeardia-Dependent Variable Left Bundle Branch Block

This report describes tachyeardiaand bradycardia-dependent left bundle branch block in a patient who exhibited normal intraventricular conduction with impulses intermediate in timing. During bradyeardia, longer cycles were associated with increasing degrees of incomplete left bundle branch block. These clinical observations support the existence of slow Phase 4 depolarization of latent pacemake...

Intraventricular conduction defects in acute myocardial infarction.

Of 325 consecutive cases with acute myocardial infarction admitted to a coronary care unit, II3 per cent developed one or more intraventricular conduction defects as an early, and often transient complication. The most common Lintraventricular conduction defect was block of the anterior fascicle, followed by complete right bundle-branch block, and by the association of right bundle-branch block...

Intermittent complete left bundle-branch block: phonocardiographic and mechanocardiographic study of one case.

Since the work of Wolferth and Margolies (1935), the modifications of both the heart sounds and the sequence of ventricular events induced by left bundle-branch block have been well known. Yet there has been some disagreement on details, mainly because left bundle-branch block is seldom aft isolated abnormality. The opportunity was offered to record the heart sounds, the indirect carotid pulse,...

The successful treatment of end stage of heart failure associated with complete right bundle branch block with biventricular pacemaker placement.

Biventricular pacing has been used to treat patients with symptomatic heart failure, systolic left ventricular dysfunction and intraventricular conduction delays. This modality is usually reserved for the treatment of patients with a left bundle branch block pattern on electrocardiogram. We report the successful use of biventricular pacing in a patient with heart failure and a right bundle bran...

Study of intraventricular conduction times in patients with left bundle-branch block and left axis deviation and in patients with left bundle-branch block and normal QRS axis using His bundle electrograms.