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(Circulation. 1963;28:362.)
© 1963 American Heart Association, Inc.

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Analysis of the RSR' Complex in Lead V₁

N. P. DEPASQUALE M.D.¹ G. E. BURCH M.D.¹

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

An RSR' complex was present in lead V₁ in the electrocardiograms of 44 of 870 normal people from birth to 30 years of age; an overall incidence of 5 per cent. Analysis of the RSR' from these 44 patients demonstrated the importance of considering age when interpreting the RSR' complex. Criteria for distinguishing normal and abnormal RSR' complexes for various age groups was suggested. These criteria were 85 per cent successful in distinguishing the RSR' complex in patients with congenital heart disease from the RSR' complex in normal subjects.