ECG - Junctional

1. Normal Sinus

1.1. From SA Node

1.2. P wave before QRS

1.3. PR - 0.12 - 0.20

1.4. QRS - same shape and size - < 0.12

1.5. Rhythm = P-P & R-R; Regualr

1.6. Rate = 60 - 100 bpm

2. Junctional Rhythm

2.1. P wave: inverted, buried or retrograde

2.2. Rate: 40 - 60 bpm

3. Accelerated Junctional Rhythm

3.1. P wave: inverted, buried or retrograde

3.2. Rate: 61 - 100 bpm

4. Premature Junctional Contraction

4.1. From AV Junction

4.2. P wave:

4.2.1. Inverted

4.2.2. Buried

4.2.3. Retrograde

5. Junctional Bradycardia

5.1. P wave: inverted, buried or retrograde

5.2. Rate: < 40 bpm

6. Junctional Tachycardia

6.1. P wave: inverted, buried or retrograde

6.2. Rate: 101 - 150 bpm