Bradycardia = too slow
A heart rate of less than 60 beats per minute (BPM) in adults is called bradycardia. What's too slow for you may depend on your age and physical condition.
View an animation of bradycardia.
Causes of bradycardia
Symptoms of bradycardia
A heart rhythm that's too slow can cause insufficient blood flow to the brain with symptoms such as:
Complications of bradycardia
Severe, prolonged untreated bradycardia can cause:
Treatment of the underlying medical cause
This content was last reviewed September 2016.