What Are the Symptoms of Atrial Fibrillation?
Many people with atrial fibrillation never experience symptoms. Those who do may have one or more of the following, which can start or stop suddenly:
- Heart palpitations (the sensation of feeling your heart beat)
- Irregular pulse that feels too rapid or too slow, or is racing, pounding or fluttering
- Dizziness or light-headedness
- Trouble breathing
- Difficulty breathing when standing or lying down
- Sensation of tightness in the chest