Bradyarrhythmia indicates a heart rate that is below 60 beats per minute. The term often used is bradycardia and refers to a sinus rhythm below 60 beats per minute. It is important to be aware that a heart rate < 60 beats/min may be asymptomatic and even normal in some individuals or in certain contexts. Generally, symptoms tend to occur with heart rates well below 60, and here, we primarily discuss bradyarrhythmias with a heart rate < 50 beats per minute during normal activity.

Sinus Bradycardia ECG