Physiology of Conduction System

Question 1

Intrinsic rate of the

1. SA node
2. AV node
3. Purkinje fibers

Answer 1

1. 60-100
2. 45-50
3. 35-40

Question 2

Bipolar limb leads and their charges

Answer 2

I. LA + and RA -
II. LL + and RA -
III. LL + and LA -

Question 3

Do you see ECG current while in the conducting system?

Answer 3

NO

ECG waves represent current moving throughout the atrial and ventricular muscle

Question 4

Components of the conduction system

Answer 4

SA node
Intranodal pathways
Bachman's bundle
AV node
Bundle of His
Right and left bundle branch
Purkinje fibers