Peremeshchenie voditelia ritma v pravom predserdii sobaki pri stimuliatsii bluzhdaiushchego nerva.

Translated title of the contribution: Transposition of the pacemaker in the right atrium during stimulation of the vagus nerve in the dog

V. M. Adomonis, I. I. Bredikis, F. F. Bukauskas, K. K. Lukoshiavichius, K. S. Mutskus

Research output: Contribution to journalArticle

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Abstract

The heart rate and intraatrial latencies between epicardial electrograms from three sites of the right atrium have been studied during vagal stimulation in open-chest dogs. It has been shown that alterations of latencies started at a certain cardiac cycle length irrespective of pacing frequency. A transitional process of changes from a steady latency value in the control to another steady value during vagal stimulation has been observed. The transitional process has been simulated in experimental procedure in which two sites of the right atrium were paced at close and constant frequencies. To interpret the results obtained one-dimensional model of the sinus node has been constructed. According to the model, pacemaker shift within the sinus node results from a competition between two foci of automaticity with close intrinsic frequencies.

Original languageRussian
Pages (from-to)387-390
Number of pages4
JournalByulleten Eksperimentalnoi Biologii i Meditsiny
Volume103
Issue number4
Publication statusPublished - Apr 1 1987

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ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

Adomonis, V. M., Bredikis, I. I., Bukauskas, F. F., Lukoshiavichius, K. K., & Mutskus, K. S. (1987). Peremeshchenie voditelia ritma v pravom predserdii sobaki pri stimuliatsii bluzhdaiushchego nerva. Byulleten Eksperimentalnoi Biologii i Meditsiny, 103(4), 387-390.