Final answer:
The electrode located to the right of the patient's sternum at the 4th intercostal space corresponds to lead V1 in a 12-lead electrocardiogram (ECG), providing information about the right side of the heart.
Step-by-step explanation:
The electrode located to the right of the patient's sternum at the 4th intercostal space corresponds to lead V1 in a 12-lead electrocardiogram (ECG).
In a 12-lead ECG, six electrodes are placed on the chest, and four electrodes are placed on the limbs. Each lead represents a different view of the heart's electrical activity. Lead V1 is positioned on the right side of the sternum, and it provides information about the right side of the heart.