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(Circulation. 1962;26:544.)
© 1962 American Heart Association, Inc.

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Electrocardiogram and Spatial Vectorcardiogram of Localized Myocardial Hypertrophy

GEORGE E. BURCH M.D.¹ NICHOLAS P. DEPASQUALE M.D.¹

¹ From the Department of Medicine, Tulane University School of Medicine, and the Charity Hospital of Louisiana, New Orleans, Louisiana.

Diagnostic electrocardiographic and vectorcardiographic manifestations of localized hypertrophy of the posterobasal portion of the left ventricle and of localized hypertrophy of the crista supraventricularis have been described. Recognition of the fact that only a portion of the myocardium may undergo hypertrophy is important in understanding certain types of electrocardiographic and spatial vectorcardiographic patterns.

Several types of localized myocardial hypertrophy for which no characteristic electrocardiographic or spatial vectorcardiographic patterns have been described were also discussed. There is a need for further study of this problem, and, in particular, for detailed correlation of the necropsy data with the electrocardiogram and the vectorcardiogram.