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Article
May 1941

LIFE EXPECTANCY IN CONDUCTIVE DISTURBANCES AFFECTING THE VENTRICULAR COMPLEX OF THE ELECTROCARDIOGRAM: III. SPECIAL CONSIDERATION OF THE WIDE S WAVE PATTERN, WITH REPORT OF THREE CASES

Author Affiliations

Fellow in Medicine, the Mayo Foundation ROCHESTER, MINN.

From the Section on Cardiology, the Mayo Clinic (Drs. Dry and Willius).

Arch Intern Med (Chic). 1941;67(5):1034-1049. doi:10.1001/archinte.1941.00200050142010
Abstract

In a previous publication1 we have indicated that the wide S wave pattern differs from electrocardiograms produced by other forms of bundle branch defects not only in its electrocardiographic configuration but also (and this is of greater moment) in its life history. What adds to the importance of this form is not only its relative benignity but also its relative frequency. It occurred in our material as the second commonest form of conductive disturbance affecting the ventricular complex. The authenticity of its frequent occurrence can be corroborated simply by examining the electrocardiograms which have been reproduced from time to time in reports on bundle branch block already in the literature in which it will be seen repeatedly grouped along with the conventional forms of bundle branch lesions (usually the conventional type of right bundle branch block).

CHARACTERISTICS OF THE WIDE S WAVE PATTERN  The appearance of the electrocardiogram is

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