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SANDBERG AA, SCHERLIS L, GRISHMAN A, WENER J. The Nature of the RS-T Segment Displacement as Studied with Esophageal Leads. Circulation 1950; 2:921-8. [PMID: 14783847 DOI: 10.1161/01.cir.2.6.921] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The electrocardiographic changes, with particular reference to the RS-T segment and T wave, in surface leads and in esophageal leads reflecting left ventricular cavity potentials, are studied in 7 persons with and without heart disease, before and after the administration of digitoxin. After the administration of digitoxin, the RS-T segment depression in precordial leads and in esophageal leads reflecting the potentials of the posterior surface of the left ventricle, are regularly associated with RS-T segment elevation in esophageal leads reflecting left ventricular cavity potentials. The possible roles played by myocardial involvement due to digitalis, modification of the monophasic curves, and the reduction of the human ventricular gradient are discussed.
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Tandowsky R, Anderson N, Vandeventer J. An electrocardiographic and clinical study of various so-called cardiac drugs. Am Heart J 1944. [DOI: 10.1016/s0002-8703(44)90090-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Leach C, Reed WC, White PD. Low voltage of the QRS waves in the electrocardiogram, with especial reference to lead IV. Am Heart J 1941. [DOI: 10.1016/s0002-8703(41)90721-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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