Symptoms of bradycardia usually occur when the heart is not pumping enough blood to meet the body's needs. This often happens when the heart rate is very slow or remains slow for a long period of time.

Some people with bradycardia do not have symptoms. But if you have symptoms, they may include:

• Dizziness or lightheadedness.
• Fainting (syncope) or near-fainting.
• Tiredness (fatigue).
• Shortness of breath.
• Palpitations.
• Chest pain (angina).
• More difficulty exercising.
• Confusion or difficulty concentrating.