Cardioelectric field on the body surface during atrial depolarization in rats with alcoholic cardiomyopathy

Abstract

Resume. To study the features of an atrium depolarization on the dynamics of the cardioelectric field on the body surface at rats with an alcoholic cardiomyopathy. The cardioelectric field on the body surface of rats with an alcoholic cardiomyopathy was investigated during an atrium depolarization by the method of multiple synchronous cardioelectrotopography. In experimental and control animals, reflecting atrial depolarization, is formed before the appearance of the P„ wave on the ECG, inversion of the body surface potential mapping (BSMP) regions occurs before the beginning of the ascending phase of the P„ wave. In rats of the experimental group, it is shown an increase in the heart rate, the total duration of atrial depolarization, the period of the ascending and descending phases of the P„ wave on the ECG; later (relative to the peak of the RM-wave) inversion of the BSMP regions and the beginning of the PII wave by comparison with the control animals. The duration of inversion in experimental rats significantly increased compared with the control. Alcoholic cardiomyopathy leads to significant changes in the spatial and temporal parameters of the cardioelectric field at the initial stages of atrium depolarization, an increase in the non-uniformity of depolarization and a high risk of atrial arrhythmias.

Keywords

• электрическое поле сердца
• предсердия
• алкогольная кардиомиопатия
• белые беспородные крысы
• heart electrical field
• atrium
• alcoholic cardiomyopathy
• white outbred rats