If symptoms occur, medical treatment is needed to correct the heart rhythm. This type of AFib is constant and lasts longer than 12 months. Medicines or a procedure are needed to correct the irregular heartbeat. In this type of atrial fibrillation, the irregular heart rhythm can't be reset. Medicines are needed to control the heart rate and to prevent blood clots. If you have symptoms of atrial fibrillation, make an appointment for a health checkup. You may be referred to a doctor trained in heart diseases, called a cardiologist. If you have chest pain, seek immediate medical help. The two lower chambers are called the ventricles.The two upper chambers are called the atria.To understand the causes of atrial fibrillation (AFib), it may be helpful to know how the heart typically beats.Ĭhest pain could mean that you're having a heart attack. Inside the upper right heart chamber is a group of cells called the sinus node. The sinus node makes the signals that starts each heartbeat. The signals move across the upper heart chambers. Next, the signals arrive at a group of cells called the AV node, where they usually slow down.
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