The multi-electrode mapping method was used to analyze electrical activity of isolated rat heart under conditions of standard perfusion, pharmacological stimulation of fibrillation, and mechanical stretching of the right atrium both under normal conditions and before cardiac fibrillation. It was shown that stretching of the right atrium prevented the increase of repolarization dispersion and latency of the electrical signal in the myocardium that were observed before cardiac fibrillation.

中文翻译：

---

离体大鼠心脏右心房机械拉伸对纤颤前复极离散度的影响

采用多电极标测方法分析了标准灌注、颤动药理刺激和右心房机械拉伸条件下离体大鼠心脏的电活动，包括正常条件下和心脏颤动前。结果表明，右心房的拉伸阻止了在心脏颤动之前观察到的心肌中复极分散和电信号潜伏期的增加。