What is the primary orientation of V1 and V2 leads?

What is the primary orientation of V1 and V2 leads?

• A. They are oriented over the left side of the heart
• B. They are oriented over the right side of the heart
• C. They are centered in the lower chest
• D. They represent the interventricular septum

Answer: (B)

The primary orientation of leads V1 and V2 is over the right side of the heart. These leads are placed in the fourth intercostal space, with V1 at the right sternal border and V2 at the left sternal border. Their position allows them to provide crucial information about the electrical activity of the right ventricle and the septum separating the ventricles.

This positioning helps in the assessment of conditions such as right ventricular hypertrophy and can indicate abnormalities related to the interventricular septum. By having leads V1 and V2 oriented in this manner, clinicians can better monitor and diagnose potential issues specifically associated with the right side of the heart and the interventricular septum.