What causes persistent atrial fibrillation?
The cause of persistent atrial fibrillation is an abnormal signal that interferes with the heart’s electrical system.
The heart is a muscular organ that pumps blood through your body at a steady rhythm. Two upper chambers (atria) pump blood into two lower chambers (ventricles), which send blood to the lungs and throughout the body.
Your heartbeat is part of a complex electrical system. Cells in a part of the atria called the sinus node (SA node) produce electrical signals to squeeze your heart (make it contract). Abnormal signals interfere with this electrical process. It then becomes more difficult for the heart to pump at a steady pace, affecting blood flow to the rest of the body.
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When this occurs, blood can collect in the heart and lead to blood clots which can cause a stroke. You’ll need treatment to restore normal blood flow. If normal heart rhythm and blood flow cannot be restored, you might need treatment with blood thinners.
What are the symptoms of persistent atrial fibrillation?Some people have no symptoms, while others feel fluttering or pounding in the chest. Other common symptoms include:
Dizziness or lightheadedness.
Fatigue.
Shortness of breath.
If you have any of these symptoms, see your healthcare provider. Early detection and treatment can help avoid complications. People with atrial fibrillation are five times more likely to have a stroke than those without the condition.
And if you have chest pain or pressure, call 911 immediately. You may be having a heart attack.
