Stationary fluctuations of organized activity of ventricular fibrillation of the canine heart

Authors

  • Marat Gurianov St. Petersburg State University, 7–9, Universitetskaya nab., St. Petersburg, 199034, Russian Federation
  • Piotr Yablonsky St Petersburg State University, 7–9, Universitetskaya nab., St Petersburg, 199034, Russian Federation;St Petersburg Research Institute of Phthisiopulmonology, Health Ministry of Russia, 2–4, Ligovskiy pr., St Petersburg, 191036, Russian Federation

DOI:

https://doi.org/10.21638/spbu11.2022.203

Abstract

The aim of the paper was to study fluctuations of organized activity of ventricular fibrillation of the canine heart. To solve the aim we performed frequency-amplitude analysis of the ventricular electrogram during fibrillation using the Fast Fourier Transform at 30 frequencies in the range of 0.5–15 Hz: 0.5, 1, 1.5, …, 15 Hz. Ventricular fibrillation was characterized by fluctuations of organized activity as evidenced by fluctuations of frequency and amplitude of dominating oscillations when analysing 1-second intervals of fibrillation. Fluctuations of organized activity was maintained in stationary mode as evidenced by disappearance of fluctuations of frequency and amplitude when averaging 1-second values of frequency and amplitude of oscillations in the 3-minute intervals of fibrillation. Stationary fluctuations maintain stability of organized structure of fibrillation during the 30-minute perfusion of the heart.

Keywords:

ventricular fibrillation, organized activity of ventricular fibrillation, stationary fluctuations of organized activity of ventricular fibrillation, Fast Fourier Transform

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References


References

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Published

2022-10-31

How to Cite

Gurianov, M. ., & Yablonsky, P. . (2022). Stationary fluctuations of organized activity of ventricular fibrillation of the canine heart. Vestnik of Saint Petersburg University. Medicine, 17(2), 101–108. https://doi.org/10.21638/spbu11.2022.203

Issue

Vol. 17 No. 2 (2022)

Section

Surgery

License

Articles of "Vestnik of Saint Petersburg University. Medicine" are open access distributed under the terms of the License Agreement with Saint Petersburg State University, which permits to the authors unrestricted distribution and self-archiving free of charge.