The ECG Course - Junctional Rhythms part 1

Where do junctional rhythms arise from? 

• The area between the ventricles and the atria (where they meet) 

• the mitral and tricuspid valves 

• The atria

• av node

What can the P waves in the Junctional Escape Rhythm look like? 

• none (hidden in QRS),  antegrade (comes before the QRS and can have positive or negative deflection but short PR interval), or retrograde (comes after the QRS) 

• none (no wave at all), antegrade (normal wave that comes before the QRS), or retrograde (inverted pwave) 

What is the difference between Junctional Escape Rhythm and Accelerated Junctional Rhythm? 

What is the difference between All three Junctional Rhythms so far? 

• the different kinds of P waves 

• the rates

Why is the P wave inverted in a junctional rythmm?