This content is PDF only. Please click on the PDF icon to access.
Two Einthoven galvanometers coupled in tandem were used to record the electrocardiogram and the heart sounds simultaneously, and the electrical stethoscope manufactured by the Western Electric Company was used to convert the sounds into electrical variations. The study of a large number of phonocardiograms led to the following tentative conclusions: From the graphic standpoint gallop rhythm may be defined as a condition in which three sounds occur during each cardiac cycle. Several varieties may be distinguished, (a) Protodiastolic gallop rhythm in which the extra sound follows the second heart sound by a constant interval and occupies the same position in
Learn more about subscription options.
Register Now for a free account.
Observations on Heart Sounds with Particular Reference to Gallop Rhythm and Sounds of Auricular Origin.. Ann Intern Med. 1932;6:296. doi: 10.7326/0003-4819-6-2-296_1
Download citation file:
Published: Ann Intern Med. 1932;6(2):296.
Results provided by:
Copyright © 2017 American College of Physicians. All Rights Reserved.
Print ISSN: 0003-4819 | Online ISSN: 1539-3704
Conditions of Use
This PDF is available to Subscribers Only