The signs of atrial fibrillation (AFib) might seem pretty hard to ignore: a racing heart, trouble breathing, chest pain, and dizziness. You’d feel these symptoms and know something was wrong, right?
Maybe not. Nearly a quarter of the estimated 2.7 million people who have AFib have no symptoms at all. The problem is called silent AFib.
With this condition, the chambers on the top of your heart, called the atria, flutter instead of beating normally, which can put stress on the heart muscle. Since...
The quivering upsets the normal rhythm between the atria and the
lower parts of the heart, the ventricles. And the ventricles may beat fast and without a regular rhythm.
This is dangerous
because if the heartbeat isn't strong and steady, blood can
collect, or pool, in the atria. And pooled blood is more likely to form clots. Clots can travel to the brain, block blood flow, and cause a stroke.