Electrodes are placed much differently for an SAECG than they are for a 12-lead ECG. Here’s one method:

1. Place the positive X electrode at the left fourth intercostal space, midaxillary line
2. Place the negative X electrode at the right fourth intercostal space, midaxillary line
3. Place the positive Y electrode at the left iliac crest
4. Place the negative Y electrode at the superior aspect of the manubrium of the sternum
5. Place the positive Z electrode at the fourth intercostal space left of the sternum
6. Place the ground (G) on the lower right at the eighth rib
7. Reposition the patient on his or her side, or have him or her sit forward. Then place the negative Z electrode on his or her back, directly posterior to the positive Z electrode
8. Attach all the leads to the electrodes, being careful not to dislodge the posterior lead

   Now, you can obtain the tracing.