Bundle Branch Block: Some Usual and Some Unusual Features

Bauer, G. E.

doi:10.1111/imj.1964.13.1.62

Cited by 18 publications

(14 citation statements)

References 28 publications

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“…All the pensioners with left bundle branch block had either a history of cardiac disease, hypertension or abnormal axis deviation. These findings confirm those of a number of other workers [ J ohnson et al, 1951;Bauer, 1964].…”

Section: E Axis Deviationsupporting

confidence: 92%

Electrocardiographic Changes in the Elderly

Michie¹

1970

Geront clin

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Section: E Axis Deviationsupporting

confidence: 92%

Electrocardiographic Changes in the Elderly

Michie¹

1970

Geront clin

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“…We can confirm the findings of Bauer (1964a) and others that left bundlebranch block, and less frequently right bundlebranch block, may revert to normal conduction, particularly when the heart rate falls or when high blood pressure or cardiac failure are adequately treated. The fall in heart rate in response to carotid sinus pressure may eliminate the conduction defect.…”

supporting

confidence: 88%

Aetiology of bundle-branch block.

Mulcahy¹,

Hickey²,

Maurer³

1968

Heart

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This Figure also shows the age distribution of 774 patients with classical coronary heart disease seen by us during the same period. The mean age of these patients was 56-6 years. In contrast with both forms of bundle-branch block, classical ischaemic disease tends to occur, at least in patients reaching hospital, in younger people and in a more restricted age-group, so that the patients tend to aggregate about the sixth decade, while our patients with bundle-branch block tend to aggregate around the seventh decade. RESULTSThe presenting symptoms in our patients were variable. Typical cardiac pain was present in 48 per cent with left and 34 per cent with right bundlebranch block. Respiratory symptoms including dyspneea and cough were present in 9 per cent with left and 26 per cent with right bundle-branch block. Of patients with left bundle-branch block defects, 16 (16%), and of patients with right bundle-branch block, 12 (17%), presented with cardiac failure.Other less common symptoms included atypical chest pain, Adams-Stokes attacks, and cerebrovascular symptoms. In 34 patients (22 left and 12 right branch defects) who were asymptomatic, the lesion was discovered accidentally.

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“…In a recent survey of bundle-branch block, eight patients (including Case 1 and Case 2 of the present series) with transient and intermittent conduction defects were discovered in whom the electrocardiographic diagnosis of myocardial infarction or ischmmia became possible during periods of normal conduction (Bauer, 1964). At that time it was realized that in Case 1 the conduction defect was under voluntary control, subsequently it was recognized that it could be abolished and induced at will also in Case 2.…”

Section: Discussionmentioning

confidence: 68%