IN a recent survey of 167 patients with buIndle-branch l)lock 1 10 in.stances of transient bundle-branch block were discovered. Since the completion of this study four more patients with this condition have been encountered. These 14 patients represent the subjects of this report. Transient bundle-branch block is defined as an intraventricular conduction defect that subsequently returns, if onl...

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...

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...

The electrocardiograms and salient clinical features of seven patients with electrocardiographic evidence of various types of bilateral bundle-branch block (BBBB) have been presented. When the complexes change in form and the P-R interval varies, the mechanisms are usually best interpreted by using the concepts of first degree, second degree, and third degree bundle-branch block with or without...

Intermittent left bundle branch block is uncommon. During anaesthesia,, left bundle branch block may be related to hypertension or tachycardia and its occurrence makes the diagnosis of acute myocardial ischaemia or infarction difficult. Patients with intermittent left bundle branch block often develop established left bundle branch block, which may represent an earlier state of ischaemic heart ...

It has been demonstrated repeatedly that not much importance c attached to the prognostic significance of bundle branch block. Right I branch block has been considered to show a more favorable proj than left bundle branch block. However, the presence of right I branch block, either the typical or atypical form, alerts the physici the basic cardiac disease, particularly disease of the coronary c...

When a patient is suspected of having Stokes-Adams disease the electrocardiogram is of critical importance, particularly in respect of the auriculo-ventricular (A-V) conduction time. Should this not be prolonged, the possibility of paroxysmal heart block remains, although the diagnosis of Stokes-Adams disease is uncertain without some degree of heart block recorded graphically. It is not known ...