ECG - Sinus Rhythms

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. Sinus Bradycardia

2.1. Rate = < 60 bpm

3. Sinus Tachycardia

3.1. Rate = 101 - 150