Left bundle branch block: etiologic, hemodynamic, and ventriculographic considerations

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 wi...

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Bibliographic Details
Published in:Circulation (New York, N.Y.) N.Y.), 1971-02, Vol.43 (2), p.279-287
Main Authors: Haft, J I, Herman, M V, Gorlin, R
Format: Article
Language:English
Subjects:
Adult
Aged
Angiography
Blood Pressure Determination
Brachial Artery
Bundle-Branch Block - etiology
Bundle-Branch Block - physiopathology
Cardiac Catheterization
Cardiac Volume
Cardiomyopathies - complications
Coronary Angiography
Coronary Disease - complications
Electrocardiography
Female
Heart Valve Diseases - complications
Heart Ventricles - physiopathology
Humans
Male
Middle Aged
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Summary: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. The onset of left ventricular contraction was delayed in the patients with left bundle branch block, but the period of isovolumic contraction was normal in those without severe underlying disease. Left axis deviation in addition to left bundle branch block did not imply more frequent coronary atherosclerosis.
ISSN:0009-7322
1524-4539
DOI:10.1161/01.CIR.43.2.279