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Bradycardia is a slow heart rate, when the heart beats less than 60 beats per minute. In some patients, who are otherwise healthy, the heartbeat may slow to less than 60 beats per minute while resting or sleeping. This usually causes no symptoms and does not require treatment. In other patients, bradycardia may occur due to age-related wear and tear on the heart or some other heart disease and may cause undue fatigue, lightheadedness, or fainting (syncope).
There are two basic types of bradycardia:
Permanent pacemakers can be implanted to prevent patients from experiencing symptoms due to a slow heart beat.