Atrial Fibrillation Pictures

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See inside a heart during atrial fibrillation. WebMD shows the causes, tests, and treatments for this common heart rhythm problem through illustrations and photos..Atrial fibrillation AFib is a type of abnormal heart rhythm. In AFib, the heart 's two upper chambers atria beat irregularly. Instead of beating in a normal, consistent pattern, the atria may quiver rapidly. As a result, some blood that should be moving from the atria to the lower chambers ventricles pools in the .Atrial fibrillation AFib is the most common type of abnormal heart rhythm. Atrial fibrillation or AF can lead to serious heart complications like stroke. Learn about diagnosing and treating AFib..