![]() V6 Horizontally even with V4 and V5 in the midaxillary line. (The anterior axillary line is the imaginary line that runs down from the point midway between the middle of the clavicle and the lateral end of the clavicle the lateral end of the collarbone is the end closer to the arm.) V5 Horizontally even with V4, but in the anterior axillary line. V4 In the fifth intercostal space (between ribs 5 & 6) in the mid-clavicular line (the imaginary line that extends down from the midpoint of the clavicle (collarbone). V2 In the fourth intercostal space (between ribs 4 & 5) just to the left of the sternum. V1 In the fourth intercostal space (between ribs 4 & 5) just to the right of the sternum (breastbone). LL In the same location that RL was placed, but on the left leg this time. RL On the right leg, avoiding bony prominences. LA In the same location that RA was placed, but on the left arm this time. RA On the right arm, avoiding bony prominences. To measure ST elevation, measure from 1 little box to the right of the J point.Ĭonverting seconds to milliseconds… move decimal to the right 3 placesĮlectrode label (in the USA) Electrode placement. ![]()
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