Where is electrode V1 placed in relation to the sternum?

Electrode V1 is specifically placed at the 4th intercostal space, located to the right of the sternum. This placement is crucial for obtaining accurate readings of the heart's electrical activity, particularly from the right ventricle and the septal wall.

The placement at the 4th intercostal space ensures that it is appropriately positioned for monitoring the heart's electrical conduction system and identifying any abnormalities. This location helps create a comprehensive picture of the heart's activity, which is essential in clinical settings for diagnosing conditions such as arrhythmias or other cardiac issues.

Understanding the anatomical landmarks is vital for correct electrode placement, as it directly impacts the accuracy of an ECG tracing. The identification of the intercostal spaces is typically done by palpating the ribs and locating the angle of Louis, which corresponds with the second rib, allowing the clinician to count down to the 4th intercostal space.