Sinus bradycardia is a sinus rhythm with a rate that is lower than normal. In humans, bradycardia is generally defined to be a rate of under 60 beats per minute.
- Rate: Less than 60 beats per minute.
- Rhythm: Regular.
- P waves: Upright, consistent, and normal in morphology and duration.
- P-R Interval: Between 0.12 and 0.20 seconds in duration.
- QRS Complex: Less than 0.12 seconds in width, and consistent in morphology.
ECG strip showing sinus bradycardia
ECG strip showing sinus bradycardia
12-lead ECG showing sinus bradycardia
