Book Reviews
December 1941

Essentials of Electrocardiography.

Author Affiliations

By Richard Ashman, Ph.D., and Edgar Hull, M.D. Second edition. Price, $5. Pp. 373, with 122 illustrations. New York: The Macmillan Company, 1941.

Am J Dis Child. 1941;62(6):1331. doi:10.1001/archpedi.1941.02000180205017

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The recent edition follows the same general outline that was used in the 1937 edition, but there is considerable amplification of the text. Many of the chapters have been entirely rewritten and contain much new material. A number of excellent illustrations have been added. In the earlier edition a single chapter dealt with the physical and physiologic basis of the electrocardiogram, while in the new edition two chapters are given over to this discussion. The text of these chapters has been altered in many particulars, and some of the newer concepts and theories are now included. Chest leads were given meager attention in the earlier edition, but this edition gives almost a chapter to this subject. One wishes, however, that more of the illustrated curves included chest leads. The description of the changes produced by myocardial infarction has been amplified, and illustrations with chest leads have been added. The electrocardiographic

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