What is the charge of AVR on an ECG?

The charge of AVR on an ECG correctly reflects the configuration of the unipolar leads used to assess heart activity from different angles. In the case of AVR, the right arm is considered the positive electrode, while the left arm and left leg serve as the negative reference points.

When analyzing the lead placement, the ECG records electrical potentials, giving a view of the heart from the right side. This specific arrangement helps identify deviations in heart function or structure, particularly when assessing abnormalities in the electrical conduction pathway or overall heart function. Hence, getting a clear reading from the right arm as positive enhances the accuracy of this view.

The other options depict incorrect configurations of positive and negative charges associated with the AVR lead, which can lead to misunderstanding of the lead’s role in assessing heart health. Understanding the anatomy and orientation of each lead is crucial for accurately interpreting ECG data and recognizing any potential cardiac issues.