Question

Number of electrodes in limb leads for a 12-Lead EKG? Name the electrodes.

A) 2 electrodes; RA and LA
B) 4 electrodes; RA, LA, RL, LL
C) 6 electrodes; RA, LA, RL, LL, LL1, LL2
D) 8 electrodes; RA, LA, RL, LL, RA1, LA1, RL1, LL1

Answer 1

There are four electrodes used in the limb leads for a 12-lead ECG, which are RA (right arm), LA (left arm), RL (right leg), and LL (left leg).

Step-by-step explanation:

The question you've asked is related to the number and names of electrodes used in limb leads for a 12-lead ECG. The correct answer is B) 4 electrodes; RA, LA, RL, LL. In a 12-lead ECG, there are six electrodes placed on the chest and four electrodes placed on the limbs. These four limb electrodes are labeled as RA (right arm), LA (left arm), RL (right leg), and LL (left leg). The ECG leads that directly involve these electrodes are called limb leads, and they are critical for recording the heart's electrical activity.