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. 2019 Nov 21;20(23):5845. doi: 10.3390/ijms20235845

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Electrocardiogram (ECG) tracings of rats with ventricular arrhythmias (VA) induced by BaCl₂. The vertical axis of each ECG indicates voltage (mV), with 0.5 mV for all grids. The horizontal axis of the ECG indicates time (s), with 0.2 s for all four grids: (A) normal rat ECG tracing; (B) supraventricular tachycardia (SVT); (C) ventricular tachycardia (VT); (D) myocardial ischemia; (E) ventricular flutter; (F) ventricular fibrillation (VF); (G) different types of arrhythmias switching between each other; and (H) a terminal ECG.