S.L. SMIRNOVA¹, O.V. SUSLONOVA¹, I.M. ROSHCHEVSKAYA²

¹Komi Scientific Centre of the Ural branch of the Russian Academy of Sciences, 24 Kommunisticheskaya Str., Syktyvkar, Russian Federation, 167982

²Pitirim Sorokin Syktyvkar State University, 55 Oktyabrskiy prospekt, Syktyvkar, Russian Federation, 167001

Smirnova S.L. — Cand. Biol. Sc., Senior Researcher, tel. (8212) 24-51-24, e-mail: smirnova.sl@mail.ru

Suslonova O.V. — researcher, tel. (8212) 24-51-24, e-mail: smirnova.sl@mail.ru

Roshchevskaya I.M. — D. Biol. Sc., correspondent member of the Russian Academy of Sciences, Chief Researcher, tel. (8212) 39-03-45, e-mail: compcard@mail.ru

 The study of the cardioelectric field on the body surface during atrial depolarization in SHR rats with spontaneous arterial hypertension has revealed changes in the dynamics of displacement of positive and negative cardioelectric potential areas during the ascending phase of the P-wave in the ECG, which provides evidence for the heterogeneity of the excitation wave propagation from the sinoatrial node along the right atrium. The changes revealed may be used as a non-invasive diagnostic criterion for atrial arrhythmias.

Key words: cardioelectric field, atria, arterial hypertension, SHR rats.

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