In healthy people, atrial fibrillation isn't usually life-threatening or considered serious. However, if you have diabetes, high blood pressure, or other heart diseases, atrial fibrillation can be dangerous. In any case, this condition must be properly diagnosed and managed by a physician.
The most common cause of atrial fibrillation is structural heart problems. Coronary artery disease is one of the possible causes of atrial fibrillation. A heart attack occurred.
Medicines to control heart rate and reduce the risk of stroke are used to treat atrial fibrillation, as are procedures to restore normal heart rhythm. You may be able to be treated by a general practitioner, or you may be referred to a heart specialist (a cardiologist).