Which intercostal space is associated with electrode V4 placement?

Electrode V4 placement involves placing the electrode in the 5th intercostal space at the left mid-clavicular line. This position is significant because it provides an optimal view of the heart's electrical activity during an electrocardiogram (ECG). The placement at the 5th intercostal space allows for better monitoring of the heart’s anterior wall and is essential for detecting specific cardiac anomalies.

The left mid-clavicular line is an important anatomical landmark that helps ensure consistent and accurate placement of the electrode across patients. Placing V4 in this position contributes to the overall standard 12-lead ECG configuration, enabling more precise diagnosis and analysis by the healthcare provider.