Abstract
This report describes the case of a patient with a supraventricular tachycardia with a ventricular rate of 109/min and no visible P waves in the electrocardiogram. The recording of the monophasic action potential of the right atrium disclosed an atrial tachycardia with a rate of 218/min. There was an alternans of the phase 2 of repolarisation in the action potential. This report emphasises the fact that the phenomenon of alternans occurs in man, as in the experimental animal, at a cellular level.
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Selected References
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- BERNREITER M. Unusual electrocardiographic findings in cardiac amyloidosis. J Am Med Assoc. 1956 Jun 2;161(5):441–441. doi: 10.1001/jama.1956.62970050008008c. [DOI] [PubMed] [Google Scholar]
- CHUNG K. Y., WALSH T. J., MASSIE E. ELECTRICAL ALTERNANS: A REPORT OF 12 CASES. Am J Med Sci. 1964 Aug;248:212–PASSIM. [PubMed] [Google Scholar]
- COLVIN J. Electrical alternans: case report and comments on the literature. Am Heart J. 1958 Apr;55(4):513–517. doi: 10.1016/0002-8703(58)90028-0. [DOI] [PubMed] [Google Scholar]
- Gavrilescu S., Cotoi S., Pop T. Monophasic action potential of the right atrium in paroxysmal atrial flutter and fibrillation. Br Heart J. 1973 Jun;35(6):585–589. doi: 10.1136/hrt.35.6.585. [DOI] [PMC free article] [PubMed] [Google Scholar]
- HOFFMAN B. F., CRANEFIELD P. F., LEPESCHKIN E., SURAWICZ B., HERRLICH H. C. Comparison of cardiac monophasic action potentials recorded by intracellular and suction electrodes. Am J Physiol. 1959 Jun;196(6):1297–1301. doi: 10.1152/ajplegacy.1959.196.6.1297. [DOI] [PubMed] [Google Scholar]
- HOFFMAN B. F., SUCKLING E. E. Effect of heart rate on cardiac membrane potentials and the unipolar electrogram. Am J Physiol. 1954 Oct;179(1):123–130. doi: 10.1152/ajplegacy.1954.179.1.123. [DOI] [PubMed] [Google Scholar]
- Hogan P. M., Davis L. D. Evidence for specialized fibers in the canine right atrium. Circ Res. 1968 Sep;23(3):387–396. doi: 10.1161/01.res.23.3.387. [DOI] [PubMed] [Google Scholar]
- KLEINFELD M., MAGIN J., STEIN E. Electrical alternans in single ventricular fibers of the frog heart. Am J Physiol. 1956 Sep;187(1):139–142. doi: 10.1152/ajplegacy.1956.187.1.139. [DOI] [PubMed] [Google Scholar]
- Kohlhardt M. Transmembranäre Einwärtsströme bei der Erregung des Herzens. Klin Wochenschr. 1975 Dec 1;53(23):1089–1099. doi: 10.1007/BF01614276. [DOI] [PubMed] [Google Scholar]
- LING G., GERARD R. W. The normal membrane potential of frog sartorius fibers. J Cell Physiol. 1949 Dec;34(3):383–396. doi: 10.1002/jcp.1030340304. [DOI] [PubMed] [Google Scholar]
- Olsson B., Varnauskas E., Korsgren M. Further improved method for measuring monophasic action potentials of the intact human heart. J Electrocardiol. 1971;4(1):19–23. doi: 10.1016/s0022-0736(71)80045-6. [DOI] [PubMed] [Google Scholar]
- Olsson S. B. Monophasic action potentials from right atrial muscle recorded during heart catheterization. Acta Med Scand. 1971 Nov;190(5):369–379. doi: 10.1111/j.0954-6820.1971.tb07445.x. [DOI] [PubMed] [Google Scholar]
- PISO H. J. Elektrische alternans bij aandoeningen van het pericardium. Ned Tijdschr Geneeskd. 1956 Dec 29;100(52):3874–3880. [PubMed] [Google Scholar]
- SCHAMROTH L., SEGAL F., RABINOWITZ D. Electrical altenans with unusual features. Am Heart J. 1959 Dec;58:900–904. doi: 10.1016/0002-8703(59)90111-5. [DOI] [PubMed] [Google Scholar]

