Question

Which electrodes are used for Lead II?

A) LA and LL
B) RA and LL
C) LA and RA
D) RL and LL
E) RA and RL

Answer 1

The electrodes used for Lead II in ECG are LA and LL. Lead II measures the potential difference between the left arm and the left leg to assess the heart's electrical activity.

Step-by-step explanation:

The electrodes used for Lead II in electrocardiography (ECG) are LA and LL. In ECG, the RA, LA, and LL electrodes are placed on the patient to measure components of the heart's depolarization vector. Lead II specifically measures the potential difference between the left arm (LA) and the left leg (LL). This lead is commonly used to assess the electrical activity of the heart.