Which lead positioning involves the midaxillary line?

Lead V6 is placed at the midaxillary line, which is an important anatomical reference point on the torso. Specifically, it is positioned at the horizontal level of the fifth intercostal space, aligned with the midaxillary line. This placement is crucial for accurately representing the electrical activity of the heart from a lateral perspective.

In contrast, the other leads mentioned have different placement sites. Lead I is positioned between the right and left arms, while Lead II generally runs from the right arm to the left leg. Lead V4 is placed on the left side of the chest at the fifth intercostal space, but it is positioned at the left sternal border, not the midaxillary line. Each lead provides valuable information regarding cardiac activity, but V6 specifically captures lateral heart activity and is essential for a comprehensive ECG interpretation.