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In this monograph are presented the data collected during a study of the heart rate by means of the cardiotachometer, an electromagnetic device activated by the action currents of the heart. The studies concern healthy subjects under conditions of average activities, patients during anesthesia and operation, and patients under observation for cardiac disability. To the physician accustomed to place considerable weight on the pulse rate, it must come as something of a shock to learn how widely the healthy pulse rate varies under normal conditions even aside from the well known changes of rate induced by physical and emotional stimuli.
The Heart Rate.. Ann Intern Med. ;6:709. doi: 10.7326/0003-4819-6-5-709_1
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Published: Ann Intern Med. 1932;6(5):709.
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Print ISSN: 0003-4819 | Online ISSN: 1539-3704
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