Question

Which lead is the most useful for routine monitoring and monitoring the sinus node?

1) Lead I
2) Lead II
3) Lead III
4) Lead aVR

Answer 1

Lead II is the most useful lead for routine monitoring and monitoring the sinus node in an ECG.

Step-by-step explanation:

The most useful lead for routine monitoring and monitoring the sinus node in an electrocardiogram (ECG) is Lead II. Lead II is obtained by placing electrodes on the right arm and the left leg, and it reflects the electrical activity of the heart in a way that is most representative of the sinus node. Lead I, Lead III, and Lead aVR also provide valuable information about heart function but may not specifically focus on the sinus node.