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. 2024 Aug 30;38(5):2783–2789. doi: 10.1111/jvim.17164

FIGURE 2.

FIGURE 2

Foal 1, Day 1, before rate control: Atrial fibrillation with single tall, slightly wide QRS complex (arrow) (100 ms vs 88 ms) with elevated ST segment. Average ventricular rate of 190 bpm. Lead II is in a base apex configuration. Lead I is a nontraditional lead and Lead III is calculated from Leads I and II. For all ECGs, the electrodes are placed around the girth area with the left leg electrode on the sternum, the left arm electrode on left side of the thorax slightly dorsal to level of the cardiac apex, the right arm electrode over the right thorax approximately 6 cm below the dorsal midline, and the right leg electrode over the left thorax approximately 6 cm below the dorsal midline.