Which limb leads are unipolar leads?
A) aVR, aVL, and aVF
B) I, II, and III
C) IV, V, and VI
D) I, II, and aVF

Question

Quizplus · Accepted Answer

Limb leads aVR, aVL, and aVF are unipolar leads because they each have one positive electrode and use a combination of the other two as a shared negative electrode. The other choices have bipolar leads - I, II, and III are referred to as standard limb leads, while IV, V, and VI are chest (or precordial) leads.

Which Limb Leads Are Unipolar Leads