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The value of the former booklet is established. The well chosen electrocardiograms, with adequate legends, illustrate the normal and abnormal mechanisms of the heart beat. "The Genesis of the Electrocardiogram" is new and helpful. Additions to the "Table of Characteristics of the Normal Electrocardiographic Cycle," plates illustrating the types and progressive changes of infarction and an illustrated discussion of chest leads are timely. The valuable "Procedure in Reading Electrocardiograms" is retained. The booklet provides useful supplementary material for students and practitioners.
The second booklet, of attractive format, is a detailed outline of graphic abnormalities (illustrated by drawings rather than actual electrocardiograms) and as such is of greatest value to the author.
Elements of Electrocardiographic Interpretation with Forty Plates Illustrating the More Important Deviations from the Normal, Selected from the Files of the Michael Reese Hospital. JAMA. 1945;127(11):682. doi:10.1001/jama.1945.02860110062029
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