Which lead is typically monitored for ST segment changes?

The lead that is typically monitored for ST segment changes is often Lead V2. Lead V2 provides a view of the anterior and septal walls of the heart, making it crucial for detecting ST segment elevation or depression, which can indicate ischemia, infarction, or other cardiac conditions. Monitoring the ST segment in this lead allows healthcare professionals to assess the heart's electrical activity in a region where many significant changes, particularly those related to coronary artery disease, can be detected.

While other leads such as V1, V5, and V6 do provide valuable information about the heart's overall function and can indicate other issues, Lead V2's location is particularly effective for identifying changes that are critical in diagnosing acute coronary syndromes.