Ectopic right atrial rhythms: Experimental and clinical data

M. Mirowski, S. H. Lau, Andrew L. Wit, Charles Steiner, Gustavus A. Bobb, Bernard Tabatznik, Anthony N. Damato

Research output: Contribution to journalArticle

Abstract

In 18 out of 25 canine hearts studied with bipolar plunge electrodes, ectopic right atrial (RA) beats were observed occurring (1) spontaneously, (2) during vagal stimulation, (3) after destruction of the sinus node, and (4) during ventricular pacing. In these beats the RA appendage was activated first, followed by Bachmann's bundle, sinus node, left atrial appendage, posterior left atrium, and proximal coronary sinus. This sequence was consistently reproduced by pacing through the RA appendage recording electrode. In addition, 19 electrocardiograms exhibiting normal P waves in the extremity leads and inverted P waves in V1 to V4 were subjected to vectorial analysis which indicated the superoanterior RA as the pacemaker site. Conversion of these rhythms to sinus rhythm or vice versa was demonstrated. It is suggested that this human arrhythmia represents a counterpart of RA ectopic activity observed in the intact canine hearts.

Original languageEnglish (US)
Pages (from-to)666-676
Number of pages11
JournalAmerican Heart Journal
Volume81
Issue number5
DOIs
StatePublished - 1971
Externally publishedYes

Fingerprint

Atrial Appendage
Sinoatrial Node
Canidae
Electrodes
Atrial Premature Complexes
Coronary Sinus
Heart Atria
Cardiac Arrhythmias
Electrocardiography
Extremities

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Cite this

Mirowski, M., Lau, S. H., Wit, A. L., Steiner, C., Bobb, G. A., Tabatznik, B., & Damato, A. N. (1971). Ectopic right atrial rhythms: Experimental and clinical data. American Heart Journal, 81(5), 666-676. https://doi.org/10.1016/0002-8703(71)90010-X

Ectopic right atrial rhythms : Experimental and clinical data. / Mirowski, M.; Lau, S. H.; Wit, Andrew L.; Steiner, Charles; Bobb, Gustavus A.; Tabatznik, Bernard; Damato, Anthony N.

In: American Heart Journal, Vol. 81, No. 5, 1971, p. 666-676.

Research output: Contribution to journalArticle

Mirowski, M, Lau, SH, Wit, AL, Steiner, C, Bobb, GA, Tabatznik, B & Damato, AN 1971, 'Ectopic right atrial rhythms: Experimental and clinical data', American Heart Journal, vol. 81, no. 5, pp. 666-676. https://doi.org/10.1016/0002-8703(71)90010-X
Mirowski M, Lau SH, Wit AL, Steiner C, Bobb GA, Tabatznik B et al. Ectopic right atrial rhythms: Experimental and clinical data. American Heart Journal. 1971;81(5):666-676. https://doi.org/10.1016/0002-8703(71)90010-X
Mirowski, M. ; Lau, S. H. ; Wit, Andrew L. ; Steiner, Charles ; Bobb, Gustavus A. ; Tabatznik, Bernard ; Damato, Anthony N. / Ectopic right atrial rhythms : Experimental and clinical data. In: American Heart Journal. 1971 ; Vol. 81, No. 5. pp. 666-676.
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